WO2002067815A1 - Bifurcated stent - Google Patents
Bifurcated stent Download PDFInfo
- Publication number
- WO2002067815A1 WO2002067815A1 PCT/US2002/006155 US0206155W WO02067815A1 WO 2002067815 A1 WO2002067815 A1 WO 2002067815A1 US 0206155 W US0206155 W US 0206155W WO 02067815 A1 WO02067815 A1 WO 02067815A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stent
- section
- bifurcated
- substantially tubular
- wire
- Prior art date
Links
- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000012781 shape memory material Substances 0.000 claims 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 12
- 230000001419 dependent effect Effects 0.000 description 11
- 210000001367 artery Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 210000003090 iliac artery Anatomy 0.000 description 6
- 208000037804 stenosis Diseases 0.000 description 6
- 230000036262 stenosis Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910001000 nickel titanium Inorganic materials 0.000 description 5
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 5
- 210000004004 carotid artery internal Anatomy 0.000 description 4
- 206010002329 Aneurysm Diseases 0.000 description 3
- 210000001168 carotid artery common Anatomy 0.000 description 3
- 230000003902 lesion Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 230000002792 vascular Effects 0.000 description 3
- 210000005166 vasculature Anatomy 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 229910000701 elgiloys (Co-Cr-Ni Alloy) Inorganic materials 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 208000005189 Embolism Diseases 0.000 description 1
- 208000002223 abdominal aortic aneurysm Diseases 0.000 description 1
- 238000002399 angioplasty Methods 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 208000007474 aortic aneurysm Diseases 0.000 description 1
- 210000000013 bile duct Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 210000001715 carotid artery Anatomy 0.000 description 1
- 210000000269 carotid artery external Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 208000037803 restenosis Diseases 0.000 description 1
- 229920000431 shape-memory polymer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002966 stenotic effect Effects 0.000 description 1
- 210000001635 urinary tract Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/97—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve the outer sleeve being splittable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/064—Blood vessels with special features to facilitate anastomotic coupling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/856—Single tubular stent with a side portal passage
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/954—Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/061—Blood vessels provided with means for allowing access to secondary lumens
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/065—Y-shaped blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2002/065—Y-shaped blood vessels
- A61F2002/067—Y-shaped blood vessels modular
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2002/821—Ostial stents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
- A61F2002/9583—Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
Definitions
- Stents, grafts, stent-grafts, vena cava filters and similar implantable medical devices, collectively referred to hereinafter as stents, are radially expandable endoprostheses which are typically intravascular implants capable of being implanted transluminally and enlarged radially after being introduced percutaneously.
- Stents may be implanted in a variety of body lumens or vessels such as within the vascular system, urinary tracts, bile ducts, etc. Stents may be used to reinforce body vessels and to prevent restenosis following angioplasty in the vascular system. They may be self-expanding or expanded by an internal radial force, such as when mounted on a balloon.
- Stents are generally tubular devices for insertion into body lumens.
- Balloon expandable stents require mounting over a balloon, positioning, and inflation of the balloon to expand the stent radially outward.
- Self-expanding stents expand into place when unconstrained, without requiring assistance from a balloon.
- a self-expanding stent is biased so as to expand upon release from the delivery catheter.
- Some stents may be characterized as hybrid stents which have some characteristics of both self-expandable and balloon expandable stents.
- a vessel having a stenosis may be viewed as an inwardly protruding arcuate addition of hardened material to a cylindrical vessel wall, where the stenosed region presents a somewhat rigid body attached along, and to, the elastic wall.
- the stenosis presents resistance to any expansion of the vessel in the region bridged by the stenosis.
- Stenoses vary in composition, for example, in the degree of calcification, and therefore vary in properties as well.
- a stent may be used to provide a prosthetic inlralun inal wall e.g. in the case of a stenosis to provide an unobstructed conduit for blood in the area of the stenosis.
- An endoluminal prosthesis comprises a stent which carries a prosthetic graft layer of fabric and is used e.g. to treat an aneurysm by removing the pressure on a weakened part of an artery so as to reduce the risk of embolism, or of the natural artery wall bursting.
- a stent or endoluminal prosthesis is implanted in a blood vessel at the site of a stenosis or aneurysm by so-called “minimally invasive techniques” in which the stent is compressed radially inwards and is delivered by a catheter to the site where it is required through the patient's skin or by a “cut down” technique in which the blood vessel concerned is exposed by minor surgical means.
- minimally invasive techniques in which the stent is compressed radially inwards and is delivered by a catheter to the site where it is required through the patient's skin or by a “cut down” technique in which the blood vessel concerned is exposed by minor surgical means.
- U.S. Pat. No. 4,886,062 discloses a vascular stent which comprises a length of sinuous or "zig-zag" wire formed into a helix; the helix defines a generally cylindrical wall which, in use, constitutes a prosthetic intraluminal wall.
- the sinuous configuration of the wire permits radial expansion and compression of the stent;
- U.S. Pat. No. 4,886,062 discloses that the stent can be delivered percutaneously and expanded in situ using a balloon catheter.
- U.S. Pat. No. 4,733,665 discloses an expandable intraluminal graft which is constituted by a tubular member formed from a plurality of intersecting elongate members which permit radial expansion and compression of the stent.
- EP-A-0556850 discloses an inlxaluminal stent which is constituted by a sinuous wire formed into a helix; juxtaposed apices of the wire are secured to one another so that each hoop of the helix is supported by its neighboring hoops to increase the overall strength of the stent and to minimize the risk of plaque herniation; in some embodiments the stent of EP-A-0556850 further comprises a tubular graft member to form an endoluminal prosthesis.
- the devices cited above are generally satisfactory for the treatment of aneurysms, stenoses and other angeological diseases at sites in continuous unbifurcated portions of arteries or veins.
- a bifurcation is an area of the vasculature or other portion of the body where a first (or parent) vessel is bifurcated into two or more branch vessels.
- the lesion(s) can affect only one of the vessels (i.e., either of the branch vessels or the parent vessel) two of the vessels, or all three vessels.
- a vessel bifurcation is the left and right common carotid arteries. These arteries are the principal arteries of the head and neck. Both of the common carotid arteries are quite similar and divide at a carotid bifurcation or bulb into an external carotid artery and an internal carotid artery.
- stenoses present a particular problem for carotid stenting due to the large tapering of the vessel interior from the common carotid artery (both the left and the right) to the internal carotid artery.
- the region of the carotid bifurcation or bulb happens to be where stenoses most often occur, particularly in the region of the ostium to the internal carotid artery in both of the carotid arteries.
- embodiments of the present invention relate to endoluminal prosthesis (stents) that may be utilized in the region of a bifurcation of vessels.
- the present invention also embraces stent connecting means for connecting a stent (e.g. a stent which forms part of an endoluminal prosthesis or bifurcated stent) to another stent or portion thereof.
- a stent e.g. a stent which forms part of an endoluminal prosthesis or bifurcated stent
- Some embodiments of the invention are directed to designs of bifurcated stents and their method of manufacture, as well as apparatuses and methods for introducing prostheses to the vasculature and methods of treating angeological diseases.
- the present invention includes many different embodiments. At least one embodiment of the invention is directed to bifurcated stents and the methods of treating stenoses at a bifurcation site.
- the bifurcated stent includes at least one coiled member that defines at least one branch of the stent.
- the stent is characterized as having an expanding coil geometry.
- the expanding coil geometry provides at least one branch coil of the bifurcated stent with a larger diameter and/or a tighter coil pitch.
- the portion of the stent that is deployed into the main branch includes a coil pitch that is greater than the pitch of adjacent stent coils.
- the at least one coiled member may be characterized as wire, ribbon or a combination thereof.
- the wire coil will have an elliptical or round cross-section, whereas a ribbon may be characterized as a flattened wire coil.
- the wire ribbon or coil may be constructed from an etched panel of stent material or be manufactured from laser cut tubing.
- the ribbon may define a loose pitch coil or a tight pitch coil, h embodiments where the ribbon defines a tight pitch coil, the ribbon is preferably constructed of Nitinol and/or
- the coil may have a substantially helical configuration.
- a stent may be a generally tubular body having one more openings with at least one coiled member engaged thereto.
- the coiled member may define at least one branch of the bifurcated stent.
- the coiled portion and the generally tubular body may have similar or different physical and/or performance characteristics.
- the generally tubular body may define a balloon expandable primary portion of the bifurcated stent, whereas the coiled portion may define a self- expandable branch of the bifurcated stent that extends from the primary portion subsequent to expansion of the primary portion.
- a bifurcated stent comprises a primary portion having at least one branch portion.
- the branch portion is a woven mesh defined by at least one wire.
- the primary portion defines at least one opening through which the branch portion may be passed and engaged thereto.
- the branch portion is delivered through the primary portion in a collapsed inverted state and is expanded to a delivered state extending from the primary portion and in fluid communication therewith.
- the woven mesh of the branch portion is constructed from Nitinol wire, h at least one embodiment, an end of the branch portion is welded to the area of the primary portion that defines the opening. Alternatively the wire of the branch portion is threaded through one or more flanges of the primary portion.
- the bifurcated stent includes one or more wire members which define a loop or loops within the interior of the primary section immediately adjacent to the opening through which a branch portion extends from.
- the loops preferably have a radius which is larger than the opening.
- the end of the branch portion immediately adj acent to the primary portion is engaged to one or more of the loops.
- a bifurcated stent comprises a generally tubular primary portion which defines at least one side opening and two longitudinal openings.
- the bifurcated stent further comprises at least one coiled member which defines one or more side branches.
- the at least one coiled member extends through the primary portion to provide a first coiled branch portion extending from the at least one side opening and a second coiled branch portion extending from at least one of the longitudinal openings.
- the at least one coiled member is a wire and/or ribbon of Nitinol.
- FIG. 1 is a side perspective view of an embodiment of the invention in the deployed state.
- FIG. 2 is a side perspective view of an embodiment of the invention.
- FIG. 3 is a side perspective view of an embodiment of the invention in the deployed state.
- FIG. 4 is a side view of an embodiment of the invention wherein the secondary branch is shown in the non-deployed state.
- FIG. 5 is a side perspective view of the embodiment of the invention shown in FIG. 4 wherein the secondary branch is shown in the deployed state.
- FIG. 6 is a side perspective view of an embodiment of the invention wherein a secondary branch of the bifurcated stent is shown in the collapsed inverted state prior to delivery.
- FIG. 7 is a perspective view of the embodiment shown in FIG. 6 wherein the secondary branch is shown in the delivered state.
- FIG. 8 is a close up view of a first optional interface between a primary branch and secondary branch such as may be used in the embodiments of FIGs. 6 and 7.
- FIG. 9 is a close up view of a second optional interface between a primary branch and secondary branch such as may be used in the embodiments of FIGs. 6 and 7.
- FIG. 10 is a side perspective view of an embodiment of the invention.
- FIG. 11 is a close up view of the wire loop retaining members and secondary branch of the embodiment shown in FIG. 10.
- FIG. 12 is a side perspective view of an embodiment of the invention wherein a coiled portion of a bifurcated stent extends outward from two openings of a primary stent section.
- FIG. 13 is a side perspective view of an embodiment of the invention.
- FIG. 14 is a side perspective view of an embodiment of the invention.
- FIG. 15 is a cut-away perspective view of the embodiment shown in FIG. 14 shown deployed at a bifurcation site.
- FIG. 1 an example of a bifurcated stent is shown wherein the bifurcated stent, shown generally at 10, is comprised of at least two stent portions 12 and 14. Portions 12 and 14 are preferably self-expanding coils or coil members 16 and 18 of wire.
- wire refers to a pliable strand of elongated material which provides structural support.
- a wire may be characterized as having an elliptical or cylindrical cross-section, or having a more ribbon-like, flattened cross-section. Where the wire has a substantially round or circular cross-section, in some embodiments the wire has a diameter of about .002 to about .008 mm. Where a particular characteristic of the wire used to form coil 18 is noteworthy the relevant characteristics is noted and/or discussed in greater detail.
- the coils may be constructed from a shape memory metal such as nitinol or elgiloy or a shape memory polymer.
- the stent 10 is delivered to a bifurcation 20 by a catheter or other delivery device (not shown). Once the stent is in position either portion 12 or 14 may be initially deployed. For example, when in the stent 10 is in position at the bifurcation 20, in one embodiment, the second stent portion 14 may be deployed into the daughter branch 22 of the bifurcation 20. Following deployment of the second stent portion 14, the first stent portion may be delivered into the primary branch 24 of the bifurcation and the delivery system withdrawn.
- Second coil 18 has a first end 30 and a second end 32.
- the first end 30 is welded to a receiving region 34 of the first coil 16. It must be noted however, that welding the coils 16 and 18 together is merely one option for securing the stent portions 12 and 14 together.
- the present invention is also directed to embodiments where the coils 16 and 18 are integrally formed with a connection point therebetween, or where the coils 16 and 18 are joined in any other manner suitable for connecting stent portions 12 and 14 together.
- the first coil 16 defines a primary flow path 48 and the second coil defines a secondary flow path 52.
- the flow paths 48 and 52 are in fluid communication with each other.
- the location of the receiving region 34 on the first coil 12 maybe anywhere along the length of the first coil 12.
- end 30 of the second coil 14 maybe engaged anywhere on the first coil 12.
- Such variable engagement position allows the bifurcated stent 10 to be produced for use in a wide range of bifurcation areas.
- first portion 12 may have a length 36 different from or the same as the length 38 of the second portion 14.
- the range of values appropriate to lengths 36 and 38 are limited by the particular application and anatomical constrains.
- the stent portions 12 and 14 may be provided with tighter or looser coil pitch as well as other different characteristics, such as diameter.
- the first coil 16 has a diameter of approximately 4.0 mm
- the second coil 18 predominately has a diameter of approximately 3.0 mm.
- at least a portion 40 of the second coil 18 is provided with a larger diameter, relative to the rest of the coil 18.
- the portion 40 has a diameter greater than about 3.0 mm.
- the larger diameter portion 40 of the coil 18 will extend toward the carina to provide for improved support and/or coverage of the region.
- first stent portion 12 has a non-coiled configuration whereas the second stent portion 14 comprises a coil 18 such as described above.
- the non-coiled first portion 12 may be characterized as a tubular stent body 42 having a cellular design such as may be seen for example in the stents described in U.S. 6,348,065 and U.S. 6,013,091 the entire contents of each being incorporated herein by reference.
- the first portion 12 may be characterized as a substantially solid or porous tubular member.
- the body 42 of the first portion 12 defines a distal opening 44, a proximal opening 46 and a primary flow path 48 therebetween.
- the body 42 defines at least one secondary opening 50 which allows a secondary flow path 52 defined by the second portion 14 to be in fluid communication with the primary flow path 48.
- the end 30 of the coil 18 may be engaged to any portion of the first portion adjacent to the secondary opening 50 by any manner desired, h at least one embodiment, end 30 of the second portion 14 is welded to a receiving region 34 of the first portion 12.
- the receiving region 34 maybe located anywhere on the body 42 of the first portion 12.
- the first portion 12 and the second portion 14 may function as, and may in fact be, distinct stent structures that are simply engaged together at the -receiving region 34 to form the bifurcated stent 10.
- Either or both portions 12 and 14 may be balloon expandable, self-expandable or may have hybrid stent features.
- a self-expandable coil 18 may tightly packaged into a pre- deployment collapsed configuration, such that prior to deployment the coil 18 is contained substantially within deployed first portion 12 and/or contained in the collapsed state adjacent thereto, such as is shown in FIG. 4.
- the tightness of the coil packaging and the characteristics of the delivery catheter 90 will determine the extent to which the coil 18 is contained internally or externally relative to the first portion 12.
- the second portion 14 will not extend beyond the outer diameter 92 of the first portion 12.
- the second portion 14 is allowed to self-expand into the secondary branch (shown in FIG. 4) as directed by the guide wire 66.
- the second portion 14 is a woven body 60 comprised of one or more fibers 62 rather than a single coil 18 as previously described.
- the individual fiber(s) 62 of the woven body 60 may be a wire or ribbon of appropriate stent material, such as nitinol.
- the woven body has a first end 30 and a second end 32. At first end 30 one or more fibers 62 are secured to the first portion 12 at one or more receiving regions 34 distributed about the secondary opening 50.
- the fibers 62 may be welded to the receiving regions 34.
- the fibers 62 may have one or more loops or flanges 64 which are looped through or otherwise engaged to the receiving regions 34.
- the woven body 60 of the second portion 14 has a unique configuration which allows it to be deployed from a collapsed state within the previously deployed first portion 12 shown in FIG. 6 to a fully deployed state shown in FIG. 7 where the second portion 14 is external and adjacent to the first portion 12. As is shown in FIG. 6, prior to deployment, the collapsed body 60 is within the primary flow path 48 of the first portion 12. In some embodiments, the woven body 60 may extend out one of the proximal or distal openings 44 or 46 as shown. When the woven body 60 is deployed, the body 60 will self-expand inverting its shape as it passes through the secondary opening 50 and into the secondary branch 22.
- the second portion 14 of the stent 10 When the body 60 has fully inverted its configuration relative to the secondary opening 50 and fully expanded into the secondary opening 22, the second portion 14 of the stent 10 is fully deployed as shown in FIG. 7. h some embodiments it may be useful to retain a guide wire 66 at the bifurcation 20 in order to guide the inversion and expansion of the second portion 14 through the opening 50 and into the secondary branch 22.
- the bifurcated stent 10 may be provided with a unique engagement mechanism between the first portion 12 and second portion 14 to provide for a wide range of articulation between the respective portions, h the embodiment shown in FIG.
- the first portion 12 and second portion 14 may be have similar or different stent characteristics independent of each other, hi at least one embodiment, the first portion 12 acts as a balloon expandable stent and the second portion 14 acts as a self-expandable stent.
- the second portion 14 has a spiral or helical configuration similar to that of stents described in U.S. 6,042,597, the entire content of which is incorporated herein by reference.
- the second portion 14 is engaged to the first portion 12 through a unique wire assembly 70 which acts to moveably engage the end 30 of the second portion 14 to the secondary opening 50 of the first portion 12.
- Wire assembly 70 is comprised of one or more wire or ribbon members 72 which are disposed within or about the first portion 12 adjacent to the secondary opening 50.
- a plurality of members 72 converge and are engaged to the first portion at one or more primary engagement points 74.
- the ends 76 of each member 72 extend toward the secondary opening 50 where they are each engaged to a secondary engagement surface 78 located at or around end 30 of the second portion 14.
- the ends 76 may also be engaged to portions of the first portion 12 adjacent to the secondary opening 50 at secondary engagement surfaces 78.
- the members 72 are constructed and arranged to provide a wire assembly 70 that has a diameter larger than that of the secondary opening 50. Wire assembly 70 is engaged to the end 30 of the second portion 14 as described above.
- a bifurcated stent 10 may include a first portion 12 and a second portion 14 such as has been previously described. However, in the embodiment shown in FIG. 12 it is shown that the invention is also directed to a bifurcated stent 10 having a third portion 15 as well.
- the first portion 12 is preferably a non- coiled stent such as previously described in relation to FIG. 3.
- the first portion 12 may be any type of stent design, however in at least one embodiment the first portion 12 acts as a balloon-expandable stent.
- the second and third portions 14 and 15 are characterized as a single self-expanding coil 18 that defines each portion 14 and 15.
- Coil 18 is preferably constructed of nitinol wire.
- a portion 80 of the coil 18 connects the second portion 14 to the third portion 15 by extending from the end 30 of the second portion 14 to the end 82 of the third portion 15.
- the portion 80 of the coil that connects the two portions 14-and 15 together passes from the secondary opening 50 to one of the proximal or distal openings 44 or 46 through the primary flow passage 48 of the first portion 12. h the deployed state shown in FIG. 12, the second portion 14 extends radially away from the first portion 12 to provide a secondary flow path 52 that is in fluid communication with the primary flow path 48 via opening 50. In the deployed state the third portion 15, extends longitudinally from opening 44, or optionally opening 46, thereby extending the primary flow path 48 and stent support further into vessel 24.
- Portion 80 frictionally engages the interior 84 of the first portion 12 thereby coupling the second and third portions 14 and 15 to the first portion 12 without welds or other relatively rigid engagement mechanisms.
- the various bifurcated stent designs discussed thus far may include second portions 14 and/or first portions 12 that are constructed from a coil 18 of nitinol or other shape-memory wire or ribbon.
- the bifurcated stent 10 is clearly shown having a coil 18 constructed from a ribbon 19.
- the first portion 12 is preferably a substantially tubular stent body having a non-coiled configuration such as described above in the description of FIG. 3.
- the diameter and pitch of the coil 18 may be varied.
- the engagement between the first portion 12 and the second portion 14 may likewise be provided for by any of the methods or mechanisms described above or that are otherwise known.
- first portion 12 and second portion 14 may be integrally formed with ribbon 19 may be an extension of the first portion 12.
- the invention is also directed to embodiments having other combinations of the dependent features claimed below and other combinations of the features described above.
- the above disclosure is intended to be illustrative and not exhaustive. This description will suggest many variations and alternatives to one of ordinary skill in this art. All these alternatives and variations are intended to be included within the scope of the claims where the term “comprising” means "including, but not limited to”. Those familiar with the art may recognize other equivalents to the specific embodiments described herein which equivalents are also intended to be encompassed by the claims.
- any dependent claim which follows should be taken as alternatively written in a multiple dependent form from all prior claims which possess all antecedents referenced in such dependent claim if such multiple dependent format is an accepted format within the jurisdiction (e.g.
- each claim depending directly from claim 1 should be alternatively taken as depending from all previous claims), hi jurisdictions where multiple dependent claim formats are restricted, the following dependent claims should each be also taken as alternatively written in each singly dependent claim format which creates a dependency from a prior antecedent-possessing claim other than the specific claim listed in such dependent claim below.
Abstract
A bifurcated stent comprises a first stent section and a second stent section. Each stent section is expandable from a predeployed state to a deployed state independently from one another. The second stent section having an end engaged to a receiving region of the first stent section. In the deployed state the first stent section defines a primary flow path and the second stent section defines a secondary flow path in fluid communication with the first flow path. At least a portion of one or both the first stent section and second stent section is constructed from a wire member.
Description
TITLE
Bifurcated Stent
CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority from U. S . provisional applications 60/271,506 filed February 26, 2001; U.S. provisional application 60/271,602 filed February 26, 2001; and U.S. provisional application 60/271,595 filed February 26, 2001; the entire content of each being incorporated herein by reference.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH Not Applicable
BACKGROUND OF THE 1NNENTION
Stents, grafts, stent-grafts, vena cava filters and similar implantable medical devices, collectively referred to hereinafter as stents, are radially expandable endoprostheses which are typically intravascular implants capable of being implanted transluminally and enlarged radially after being introduced percutaneously. Stents may be implanted in a variety of body lumens or vessels such as within the vascular system, urinary tracts, bile ducts, etc. Stents may be used to reinforce body vessels and to prevent restenosis following angioplasty in the vascular system. They may be self-expanding or expanded by an internal radial force, such as when mounted on a balloon.
Stents are generally tubular devices for insertion into body lumens. Balloon expandable stents require mounting over a balloon, positioning, and inflation of the balloon to expand the stent radially outward. Self-expanding stents expand into place when unconstrained, without requiring assistance from a balloon. A self-expanding stent is biased so as to expand upon release from the delivery catheter. Some stents may be characterized as hybrid stents which have some characteristics of both self-expandable and balloon expandable stents.
A vessel having a stenosis may be viewed as an inwardly protruding arcuate addition of hardened material to a cylindrical vessel wall, where the stenosed region presents a somewhat rigid body attached along, and to, the elastic wall. The stenosis presents resistance to any expansion of the vessel in the region bridged by the stenosis. Stenoses vary in composition, for example, in the degree of calcification, and therefore vary in properties as well.
A stent may be used to provide a prosthetic inlralun inal wall e.g. in the case of a stenosis to provide an unobstructed conduit for blood in the area of the stenosis. An endoluminal prosthesis comprises a stent which carries a prosthetic graft layer of fabric and is used e.g. to treat an aneurysm by removing the pressure on a weakened part of an artery so as to reduce the risk of embolism, or of the natural artery wall bursting. Typically, a stent or endoluminal prosthesis is implanted in a blood vessel at the site of a stenosis or aneurysm by so-called "minimally invasive techniques" in which the stent is compressed radially inwards and is delivered by a catheter to the site where it is required through the patient's skin or by a "cut down" technique in which the blood vessel concerned is exposed by minor surgical means. When the stent is positioned at the correct location, the catheter is withdrawn and the stent is caused or allowed to re-expand to a predetermined diameter in the vessel.
U.S. Pat. No. 4,886,062 discloses a vascular stent which comprises a length of sinuous or "zig-zag" wire formed into a helix; the helix defines a generally cylindrical wall which, in use, constitutes a prosthetic intraluminal wall. The sinuous configuration of the wire permits radial expansion and compression of the stent; U.S. Pat. No. 4,886,062 discloses that the stent can be delivered percutaneously and expanded in situ using a balloon catheter.
U.S. Pat. No. 4,733,665 discloses an expandable intraluminal graft which is constituted by a tubular member formed from a plurality of intersecting elongate members which permit radial expansion and compression of the stent.
EP-A-0556850 discloses an inlxaluminal stent which is constituted by a sinuous wire formed into a helix; juxtaposed apices of the wire are secured to one another so that each hoop of the helix is supported by its neighboring hoops to increase the overall
strength of the stent and to minimize the risk of plaque herniation; in some embodiments the stent of EP-A-0556850 further comprises a tubular graft member to form an endoluminal prosthesis.
The devices cited above are generally satisfactory for the treatment of aneurysms, stenoses and other angeological diseases at sites in continuous unbifurcated portions of arteries or veins.
Within the vasculature however it is not uncommon for stenoses to form at a vessel bifurcation. A bifurcation is an area of the vasculature or other portion of the body where a first (or parent) vessel is bifurcated into two or more branch vessels. Where a stenotic lesion or lesions form at such a bifurcation, the lesion(s) can affect only one of the vessels (i.e., either of the branch vessels or the parent vessel) two of the vessels, or all three vessels. Many prior art stents however are not wholly satisfactory for use where the site of desired application of the stent is juxtaposed or extends across a bifurcation in an artery or vein such, for example, as the bifurcation in the mammalian aortic artery into the common iliac arteries.
For example, in the case of an abdominal aortic aneurysm ("AAA") in the infrarenal portion of the aorta which extends into one of the common iliac arteries, the use of one of the prior art prosthesis referred to above across the bifurcation into the one iliac artery will result in obstruction of the proximal end of the other common iliac artery; by-pass surgery is therefore required to connect the one iliac artery in juxtaposition with the distal end of the prosthesis to the other blocked iliac artery. It will be appreciated by a person skilled in the art that it is desirable to avoid surgery wherever possible; the requirement for by-pass surgery associated with the use of the prior art prosthesis in juxtaposition with a bifurcation in an artery therefore constitutes a significant disadvantage. Another example of a vessel bifurcation is the left and right common carotid arteries. These arteries are the principal arteries of the head and neck. Both of the common carotid arteries are quite similar and divide at a carotid bifurcation or bulb into an external carotid artery and an internal carotid artery. In the region of the carotid bulb and the ostium of the internal carotid artery, stenoses present a particular problem for carotid stenting due to
the large tapering of the vessel interior from the common carotid artery (both the left and the right) to the internal carotid artery. The region of the carotid bifurcation or bulb happens to be where stenoses most often occur, particularly in the region of the ostium to the internal carotid artery in both of the carotid arteries. Embodiments of the present invention relate to endoluminal prosthesis (stents) that may be utilized in the region of a bifurcation of vessels. The present invention also embraces stent connecting means for connecting a stent (e.g. a stent which forms part of an endoluminal prosthesis or bifurcated stent) to another stent or portion thereof. Some embodiments of the invention are directed to designs of bifurcated stents and their method of manufacture, as well as apparatuses and methods for introducing prostheses to the vasculature and methods of treating angeological diseases.
All US patents and applications and all other published documents mentioned anywhere in this application are incorporated herein by reference in their entirety.
Without limiting the scope of the invention a brief summary of some of the claimed embodiments of the invention is set forth below. Additional details of the summarized embodiments of the invention and/or additional embodiments of the invention may be found in the Detailed Description of the Invention below.
A brief abstract of the technical disclosure in the specification is provided as well only for the purposes of complying with 37 C.F.R. 1.72. The abstract is not intended to be used for interpreting the scope of the claims.
BRIEF SUMMARY OF THE INVENTION
The present invention includes many different embodiments. At least one embodiment of the invention is directed to bifurcated stents and the methods of treating stenoses at a bifurcation site. hi some embodiments of the invention, the bifurcated stent includes at least one coiled member that defines at least one branch of the stent. h some embodiments the stent is characterized as having an expanding coil geometry. The expanding coil geometry provides at least one branch coil of the bifurcated stent with a larger diameter and/or a
tighter coil pitch. In some embodiments of the invention, the portion of the stent that is deployed into the main branch includes a coil pitch that is greater than the pitch of adjacent stent coils. The at least one coiled member may be characterized as wire, ribbon or a combination thereof. Preferably, the wire coil will have an elliptical or round cross-section, whereas a ribbon may be characterized as a flattened wire coil. The wire ribbon or coil may be constructed from an etched panel of stent material or be manufactured from laser cut tubing. hi some embodiments where the coil is constructed from at least one ribbon, the ribbon may define a loose pitch coil or a tight pitch coil, h embodiments where the ribbon defines a tight pitch coil, the ribbon is preferably constructed of Nitinol and/or
Elgiloy. In embodiments where the ribbon defines a coil, the coil may have a substantially helical configuration.
In some embodiments of the invention a stent may be a generally tubular body having one more openings with at least one coiled member engaged thereto. The coiled member may define at least one branch of the bifurcated stent. The coiled portion and the generally tubular body may have similar or different physical and/or performance characteristics. For example, the generally tubular body may define a balloon expandable primary portion of the bifurcated stent, whereas the coiled portion may define a self- expandable branch of the bifurcated stent that extends from the primary portion subsequent to expansion of the primary portion. hi at least one embodiment, the coiled portion has a collapsed state and a delivered state, h the collapsed state the coiled portion is collapsed in upon itself within the plane of the tubular wall the primary portion. In the delivered state, the coiled portion extends outwardly from the primary portion to a predetermined length. In at least one embodiment of the invention a bifurcated stent comprises a primary portion having at least one branch portion. The branch portion is a woven mesh defined by at least one wire. The primary portion defines at least one opening through which the branch portion may be passed and engaged thereto. The branch portion is delivered through the primary portion in a collapsed inverted state and is expanded to a delivered state
extending from the primary portion and in fluid communication therewith. Preferably, the woven mesh of the branch portion is constructed from Nitinol wire, h at least one embodiment, an end of the branch portion is welded to the area of the primary portion that defines the opening. Alternatively the wire of the branch portion is threaded through one or more flanges of the primary portion.
In at least one embodiment of the invention, the bifurcated stent includes one or more wire members which define a loop or loops within the interior of the primary section immediately adjacent to the opening through which a branch portion extends from. The loops preferably have a radius which is larger than the opening. The end of the branch portion immediately adj acent to the primary portion is engaged to one or more of the loops. h at least one embodiment of the invention a bifurcated stent comprises a generally tubular primary portion which defines at least one side opening and two longitudinal openings. The bifurcated stent further comprises at least one coiled member which defines one or more side branches. Preferably, the at least one coiled member extends through the primary portion to provide a first coiled branch portion extending from the at least one side opening and a second coiled branch portion extending from at least one of the longitudinal openings. Preferably, the at least one coiled member is a wire and/or ribbon of Nitinol.
Additional details and/or embodiments of the invention are discussed below.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
A detailed description of the invention is hereafter described with specific reference being made to the drawings.
FIG. 1 is a side perspective view of an embodiment of the invention in the deployed state.
FIG. 2 is a side perspective view of an embodiment of the invention.
FIG. 3 is a side perspective view of an embodiment of the invention in the deployed state.
FIG. 4 is a side view of an embodiment of the invention wherein the secondary branch is shown in the non-deployed state.
FIG. 5 is a side perspective view of the embodiment of the invention shown in FIG. 4 wherein the secondary branch is shown in the deployed state. FIG. 6 is a side perspective view of an embodiment of the invention wherein a secondary branch of the bifurcated stent is shown in the collapsed inverted state prior to delivery.
FIG. 7 is a perspective view of the embodiment shown in FIG. 6 wherein the secondary branch is shown in the delivered state. FIG. 8 is a close up view of a first optional interface between a primary branch and secondary branch such as may be used in the embodiments of FIGs. 6 and 7.
FIG. 9 is a close up view of a second optional interface between a primary branch and secondary branch such as may be used in the embodiments of FIGs. 6 and 7.
FIG. 10 is a side perspective view of an embodiment of the invention. FIG. 11 is a close up view of the wire loop retaining members and secondary branch of the embodiment shown in FIG. 10.
FIG. 12 is a side perspective view of an embodiment of the invention wherein a coiled portion of a bifurcated stent extends outward from two openings of a primary stent section. FIG. 13 is a side perspective view of an embodiment of the invention.
FIG. 14 is a side perspective view of an embodiment of the invention.
FIG. 15 is a cut-away perspective view of the embodiment shown in FIG. 14 shown deployed at a bifurcation site.
DETAILED DESCRIPTION OF THE INVENTION
As indicated above the present invention includes many different embodiments, h some embodiments the invention is directed to various designs of bifurcated stents. h FIG. 1 an example of a bifurcated stent is shown wherein the bifurcated stent, shown generally at 10, is comprised of at least two stent portions 12 and 14. Portions
12 and 14 are preferably self-expanding coils or coil members 16 and 18 of wire.
In the present application the term "wire" refers to a pliable strand of elongated material which provides structural support. A wire may be characterized as having an elliptical or cylindrical cross-section, or having a more ribbon-like, flattened cross-section. Where the wire has a substantially round or circular cross-section, in some embodiments the wire has a diameter of about .002 to about .008 mm. Where a particular characteristic of the wire used to form coil 18 is noteworthy the relevant characteristics is noted and/or discussed in greater detail.
Where the stent portions 12 and 14 are self-expanding coils 16 and 18, the coils may be constructed from a shape memory metal such as nitinol or elgiloy or a shape memory polymer.
In the embodiment shown the stent 10 is delivered to a bifurcation 20 by a catheter or other delivery device (not shown). Once the stent is in position either portion 12 or 14 may be initially deployed. For example, when in the stent 10 is in position at the bifurcation 20, in one embodiment, the second stent portion 14 may be deployed into the daughter branch 22 of the bifurcation 20. Following deployment of the second stent portion 14, the first stent portion may be delivered into the primary branch 24 of the bifurcation and the delivery system withdrawn.
Second coil 18 has a first end 30 and a second end 32. In the embodiment shown in FIG. 1, the first end 30 is welded to a receiving region 34 of the first coil 16. It must be noted however, that welding the coils 16 and 18 together is merely one option for securing the stent portions 12 and 14 together. The present invention is also directed to embodiments where the coils 16 and 18 are integrally formed with a connection point therebetween, or where the coils 16 and 18 are joined in any other manner suitable for connecting stent portions 12 and 14 together.
When both coils 16 and 18 are deployed, such as is shown in FIG. 1, the first coil 16 defines a primary flow path 48 and the second coil defines a secondary flow path 52. The flow paths 48 and 52 are in fluid communication with each other.
hi addition to the above, it should also be noted that the location of the receiving region 34 on the first coil 12 maybe anywhere along the length of the first coil 12. As a result, end 30 of the second coil 14 maybe engaged anywhere on the first coil 12. Such variable engagement position allows the bifurcated stent 10 to be produced for use in a wide range of bifurcation areas.
Not only may the relative position of the engagement between the first stent portion 12 and second stent portion 14 be made variable, so to may the relative lengths of the portions be varied. For example, the first portion 12 may have a length 36 different from or the same as the length 38 of the second portion 14. The range of values appropriate to lengths 36 and 38 are limited by the particular application and anatomical constrains.
In order to provide stent support to the carina 26 the stent portions 12 and 14 may be provided with tighter or looser coil pitch as well as other different characteristics, such as diameter. For example, in one embodiment shown in FIG. 2, the first coil 16 has a diameter of approximately 4.0 mm, whereas the second coil 18 predominately has a diameter of approximately 3.0 mm. h addition, at least a portion 40 of the second coil 18 is provided with a larger diameter, relative to the rest of the coil 18. hi the example shown in FIG. 2 the portion 40 has a diameter greater than about 3.0 mm. The larger diameter portion 40 of the coil 18 will extend toward the carina to provide for improved support and/or coverage of the region. As indicated above, the portions 12 and 14 of the bifurcated stent 10 may have different physical properties, performance characteristics and be constructed from different materials from one another. In the embodiment shown in FIG. 3 for example, first stent portion 12 has a non-coiled configuration whereas the second stent portion 14 comprises a coil 18 such as described above. The non-coiled first portion 12, may be characterized as a tubular stent body 42 having a cellular design such as may be seen for example in the stents described in U.S. 6,348,065 and U.S. 6,013,091 the entire contents of each being incorporated herein by reference. Stent configurations other than those described in terms of a cellular configuration, such as for example the stents described in U.S. 6,033,433, the entire content of which is incorporated herein by reference, may also be used
as the non-coiled portion of the bifurcated stent 10. hi an alternative embodiment of the invention, the first portion 12 may be characterized as a substantially solid or porous tubular member. hi the embodiment shown in FIG. 3 the body 42 of the first portion 12 defines a distal opening 44, a proximal opening 46 and a primary flow path 48 therebetween. The body 42 defines at least one secondary opening 50 which allows a secondary flow path 52 defined by the second portion 14 to be in fluid communication with the primary flow path 48.
The end 30 of the coil 18 may be engaged to any portion of the first portion adjacent to the secondary opening 50 by any manner desired, h at least one embodiment, end 30 of the second portion 14 is welded to a receiving region 34 of the first portion 12. The receiving region 34 maybe located anywhere on the body 42 of the first portion 12.
The first portion 12 and the second portion 14 may function as, and may in fact be, distinct stent structures that are simply engaged together at the -receiving region 34 to form the bifurcated stent 10. Either or both portions 12 and 14 may be balloon expandable, self-expandable or may have hybrid stent features.
In some embodiments, where the second stent portion 14 defines a coil 18, such as shown in FIG. 3 above, a self-expandable coil 18 may tightly packaged into a pre- deployment collapsed configuration, such that prior to deployment the coil 18 is contained substantially within deployed first portion 12 and/or contained in the collapsed state adjacent thereto, such as is shown in FIG. 4. The tightness of the coil packaging and the characteristics of the delivery catheter 90 will determine the extent to which the coil 18 is contained internally or externally relative to the first portion 12. Preferably, prior to delivery of the second portion 14, the second portion 14 will not extend beyond the outer diameter 92 of the first portion 12.
As is shown in FIG, 5, following delivery of the first portion 12, the second portion 14 is allowed to self-expand into the secondary branch (shown in FIG. 4) as directed by the guide wire 66.
h an alternative embodiment of the invention shown in FIGs. 6 and 7, the second portion 14 is a woven body 60 comprised of one or more fibers 62 rather than a single coil 18 as previously described. The individual fiber(s) 62 of the woven body 60 may be a wire or ribbon of appropriate stent material, such as nitinol. The woven body has a first end 30 and a second end 32. At first end 30 one or more fibers 62 are secured to the first portion 12 at one or more receiving regions 34 distributed about the secondary opening 50. As is shown in the close-up partial view of the secondary opening 50 shown in FIG. 7, the fibers 62 may be welded to the receiving regions 34. Alternatively, in the embodiment shown in FIG. 8, the fibers 62 may have one or more loops or flanges 64 which are looped through or otherwise engaged to the receiving regions 34.
The woven body 60 of the second portion 14 has a unique configuration which allows it to be deployed from a collapsed state within the previously deployed first portion 12 shown in FIG. 6 to a fully deployed state shown in FIG. 7 where the second portion 14 is external and adjacent to the first portion 12. As is shown in FIG. 6, prior to deployment, the collapsed body 60 is within the primary flow path 48 of the first portion 12. In some embodiments, the woven body 60 may extend out one of the proximal or distal openings 44 or 46 as shown. When the woven body 60 is deployed, the body 60 will self-expand inverting its shape as it passes through the secondary opening 50 and into the secondary branch 22. When the body 60 has fully inverted its configuration relative to the secondary opening 50 and fully expanded into the secondary opening 22, the second portion 14 of the stent 10 is fully deployed as shown in FIG. 7. h some embodiments it may be useful to retain a guide wire 66 at the bifurcation 20 in order to guide the inversion and expansion of the second portion 14 through the opening 50 and into the secondary branch 22. In yet another embodiment of the invention shown in FIG. 10, the bifurcated stent 10 may be provided with a unique engagement mechanism between the first portion 12 and second portion 14 to provide for a wide range of articulation between the respective portions, h the embodiment shown in FIG. 10, the first portion 12 and second portion 14 may be have similar or different stent characteristics independent of each other, hi at least
one embodiment, the first portion 12 acts as a balloon expandable stent and the second portion 14 acts as a self-expandable stent. Preferably, the second portion 14 has a spiral or helical configuration similar to that of stents described in U.S. 6,042,597, the entire content of which is incorporated herein by reference. The second portion 14 is engaged to the first portion 12 through a unique wire assembly 70 which acts to moveably engage the end 30 of the second portion 14 to the secondary opening 50 of the first portion 12.
Wire assembly 70 is comprised of one or more wire or ribbon members 72 which are disposed within or about the first portion 12 adjacent to the secondary opening 50. In some embodiments a plurality of members 72 converge and are engaged to the first portion at one or more primary engagement points 74. The ends 76 of each member 72 extend toward the secondary opening 50 where they are each engaged to a secondary engagement surface 78 located at or around end 30 of the second portion 14. In some embodiments the ends 76 may also be engaged to portions of the first portion 12 adjacent to the secondary opening 50 at secondary engagement surfaces 78. h the embodiment shown in FIG. 11, the members 72 are constructed and arranged to provide a wire assembly 70 that has a diameter larger than that of the secondary opening 50. Wire assembly 70 is engaged to the end 30 of the second portion 14 as described above. However, the wire assembly is only frictionally engaged to the first portion 12 where the members 72 contact the area of the first portion 12 that defines the secondary opening 50. This type of engagement provides the secondary portion 14 with a rotatable ball-joint type connection to the first portion 12 thereby providing the second portion with a relatively large degree of articulation relative to the first portion 12. hi the various embodiments of the invention discussed thus far, a bifurcated stent 10 may include a first portion 12 and a second portion 14 such as has been previously described. However, in the embodiment shown in FIG. 12 it is shown that the invention is also directed to a bifurcated stent 10 having a third portion 15 as well.
In the embodiment shown in FIG. 12, the first portion 12 is preferably a non- coiled stent such as previously described in relation to FIG. 3. The first portion 12 may be
any type of stent design, however in at least one embodiment the first portion 12 acts as a balloon-expandable stent. hi contrast to the first portion 12, the second and third portions 14 and 15 are characterized as a single self-expanding coil 18 that defines each portion 14 and 15. Coil 18 is preferably constructed of nitinol wire. A portion 80 of the coil 18 connects the second portion 14 to the third portion 15 by extending from the end 30 of the second portion 14 to the end 82 of the third portion 15. The portion 80 of the coil that connects the two portions 14-and 15 together passes from the secondary opening 50 to one of the proximal or distal openings 44 or 46 through the primary flow passage 48 of the first portion 12. h the deployed state shown in FIG. 12, the second portion 14 extends radially away from the first portion 12 to provide a secondary flow path 52 that is in fluid communication with the primary flow path 48 via opening 50. In the deployed state the third portion 15, extends longitudinally from opening 44, or optionally opening 46, thereby extending the primary flow path 48 and stent support further into vessel 24.
Portion 80 frictionally engages the interior 84 of the first portion 12 thereby coupling the second and third portions 14 and 15 to the first portion 12 without welds or other relatively rigid engagement mechanisms.
As indicated above the various bifurcated stent designs discussed thus far may include second portions 14 and/or first portions 12 that are constructed from a coil 18 of nitinol or other shape-memory wire or ribbon. In the embodiments shown in FIGs. 13-15 the bifurcated stent 10 is clearly shown having a coil 18 constructed from a ribbon 19. the embodiments shown in FIGs. 13-15 the first portion 12 is preferably a substantially tubular stent body having a non-coiled configuration such as described above in the description of FIG. 3. In the various embodiments shown in FIGs. 13-15 the diameter and pitch of the coil 18 may be varied. Similarly, the engagement between the first portion 12 and the second portion 14 may likewise be provided for by any of the methods or mechanisms described above or that are otherwise known. In some embodiments, the first portion 12 and second portion 14 may be integrally formed with ribbon 19 may be an extension of the first portion 12.
In addition to being directed to the specific combinations of features claimed below, the invention is also directed to embodiments having other combinations of the dependent features claimed below and other combinations of the features described above. The above disclosure is intended to be illustrative and not exhaustive. This description will suggest many variations and alternatives to one of ordinary skill in this art. All these alternatives and variations are intended to be included within the scope of the claims where the term "comprising" means "including, but not limited to". Those familiar with the art may recognize other equivalents to the specific embodiments described herein which equivalents are also intended to be encompassed by the claims. Further, the particular features presented in the dependent claims can be combined with each other in other manners within the scope of the invention such that the invention should be recognized as also specifically directed to other embodiments having any other possible combination of the features of the dependent claims. For instance, for purposes of claim publication, any dependent claim which follows should be taken as alternatively written in a multiple dependent form from all prior claims which possess all antecedents referenced in such dependent claim if such multiple dependent format is an accepted format within the jurisdiction (e.g. each claim depending directly from claim 1 should be alternatively taken as depending from all previous claims), hi jurisdictions where multiple dependent claim formats are restricted, the following dependent claims should each be also taken as alternatively written in each singly dependent claim format which creates a dependency from a prior antecedent-possessing claim other than the specific claim listed in such dependent claim below.
Claims
1. A bifurcated stent comprising: a first stent section, the first stent section being expandable from a predeployed state to a deployed state, in the deployed state the first stent section defining a primary flow path; and a second stent section, the second stent section being expandable from a predeployed state to a deployed state, the second stent section having an end engaged to a receiving region of the first stent section, in the deployed state the second stent section defining a secondary flow path, the secondary flow path in fluid communication with the primary flow path, the first stent section the second stent section being expandable independently from one another, at least a portion of at least one of the first stent section and the second stent section being constructed from a wire member.
2. The bifurcated stent of claim 1 wherein the second stent section is constructed from at least one member of the group consisting of a coil of wire having a substantially circular cross-section, a flattened ribbon, an etched panel, laser cut tubing and any combination thereof.
3. The bifurcated stent of claim 2 wherein the first stent section is constructed from at least one member of the group consisting of a coil of wire having a substantially circular cross-section, a flattened ribbon, an etched panel, laser cut tubing and any combination thereof.
4. The bifurcated stent of claim 3 wherein the second stent section is constructed from the coil of wire, the coil of wire defining a first diameter and a second diameter.
5. The bifurcated stent of claim 2 wherein the first stent section comprises a substantially tubular body defining openings at both ends, the substantially tubular body further defining a secondary opening, the receiving region being adjacent to the secondary opening.
6. The bifurcated stent of claim 5 wherein in the deployed state the first portion defines an outer diameter, when the first portion is in the deployed state and the second portion is in the predeployed state, the second portion has a length that does not extend substantially beyond the outer diameter of the first portion.
7. The bifurcated stent of claim 5 wherein in the deployed state the first portion defines an outer diameter, when the first portion is in the deployed state and the second portion is in the predeployed state, the second portion is substantially contained within the primary flow path defined by the first portion.
8. The bifurcated stent of claim 1 wherein the first stent section is balloon expandable and the second stent section is self-expandable.
9. The bifurcated stent of claim 1 wherein at least one of the first stent section and the second stent section are self-expandable.
10. The bifurcated stent of claim 1 wherein at least one of the first stent section and the second stent section are balloon-expandable.
11. The bifurcated stent of claim 1 wherein the wire is characterized as a flattened ribbon.
12. The bifurcated stent of claim 1 wherein the second stent section comprises a wire mesh.
13. The bifurcated stent of claim 12 wherein the first stent section comprises a substantially tubular body defining openings at both ends, the substantially tubular body further defining a secondary opening, the receiving region being adjacent to the secondary opening.
14. The bifurcated stent of claim 13 wherein in the predeployed state the second stent section extends from the receiving region into the primary flow path defined by the first stent section.
15. The bifurcated stent of claim 14 wherein in the deployed state the second stent section extends from the receiving region and radially outward from the first stent section, the second stent section constructed and arranged being constructed and arranged such that when the second stent section is expanded from the predeployed state to the deployed state the position of the second stent section is inverted relative to the secondary opening.
16. The bifurcated stent of claim 12 wherein the wire mesh comprises a plurality of woven wires.
17. The bifurcated stent of claim 16 wherein receiving region comprises a plurality of the engagement points, the woven wires having ends, at least some of the ends being engaged to the engagement points.
18. The bifurcated stent of claim 17 wherein the at least some of the ends are welded to the engagement points.
19. The bifurcated stent of claim 17 wherein the at least some of the ends comprise a looped flange, each looped flange being moveably engaged to one of the engagement points.
20. A bifurcated stent comprising: a substantially tubular stent body being expandable from a predeployed state to a deployed state, the substantially tubular stent body having openings at both ends and in the deployed state defining a primary flow path therethrough, the substantially tubular body further defining a secondary opening, the secondary opening having an opening diameter; a secondary stent body, the secondary stent body being expandable from a predeployed state to a deployed state independently of the substantially tubular stent body, the secondary stent body having openings at both ends and in the deployed state defining a
» secondary flow path therethrough, one end of the secondary stent body being immediately adjacent to the secondary opening of the substantially tubular stent body; and a wire engagement apparatus, the wire engagement apparatus comprising at least one wire member, at least a first portion of the at least one wire member being engaged to the substantially tubular member, at least a second portion of the at least one wire member being engaged to the end of the secondary stent body being immediately adjacent to the secondary opening of the substantially tubular stent body, the secondary stent body being moveable relative to the substantially tubular stent body.
21. The bifurcated stent of claim 20 wherein the secondary stent body is constructed at least partially from wire.
22. The bifurcated stent of claim 21 wherein the secondary stent body is constructed at least partially from a shape memory material.
23. The bifurcated stent of claim 21 wherein the secondary stent body is self-expandable.
24. The bifurcated stent of claim 20 wherein the wire engagement apparatus is substantially contained within the primary flow path of the substantially tubular body adjacent to the secondary opening.
25. The bifurcated stent of claim 24 wherein the at least one wire member is shaped to define an apparatus diameter, the apparatus diameter being larger than the opening diameter.
26. The bifurcated stent of claim 20 wherein the wire engagement apparatus is disposed about a portion of the substantially tubular body.
20. A bifurcated stent comprising: a substantially tubular stent body being expandable from a predeployed state to a deployed state, the substantially tubular stent body having a proximal end and a distal end, the substantially tubular stent body defining a flow path opening at each end and in the deployed state defining a primary flow path therethrough, the substantially tubular body further defining a secondary opening; and a secondary stent body, the secondary stent body comprising a wire member, the wire member defining a first coiled portion, a second coiled portion and connection portion therebetween, the secondary stent body being expandable from a predeployed state to a deployed state independently of the substantially tubular stent body, in the deployed state the first coiled portion being positioned immediately adjacent to the secondary opening of the substantially tubular stent body and extending radially therefrom, in the deployed state the second coiled portion being positioned immediately adjacent to one of the flow path openings of the substantially tubular stent body and extending longitudinally therefrom, the connection portion being frictionally engaged to the substantially tubular stent body.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2002/006155 WO2002067815A1 (en) | 2001-02-26 | 2002-02-26 | Bifurcated stent |
US10/084,766 US6695877B2 (en) | 2001-02-26 | 2002-02-26 | Bifurcated stent |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27150601P | 2001-02-26 | 2001-02-26 | |
US27159501P | 2001-02-26 | 2001-02-26 | |
US27160201P | 2001-02-26 | 2001-02-26 | |
US60/271,595 | 2001-02-26 | ||
US60/271,602 | 2001-02-26 | ||
US60/271,506 | 2001-02-26 | ||
PCT/US2002/006155 WO2002067815A1 (en) | 2001-02-26 | 2002-02-26 | Bifurcated stent |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002067815A1 true WO2002067815A1 (en) | 2002-09-06 |
Family
ID=41427218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/006155 WO2002067815A1 (en) | 2001-02-26 | 2002-02-26 | Bifurcated stent |
Country Status (2)
Country | Link |
---|---|
US (1) | US6695877B2 (en) |
WO (1) | WO2002067815A1 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005046526A1 (en) * | 2003-11-08 | 2005-05-26 | Cook Incorporated | Aorta and branch vessel stent grafts, system and methods |
US7105020B2 (en) | 2003-01-14 | 2006-09-12 | The Cleveland Clinic Foundation | Branched vessel endoluminal device |
DE102007060497A1 (en) * | 2007-12-06 | 2009-06-10 | Joline Gmbh & Co. Kg | Implantable vascular support |
US7674284B2 (en) | 2004-03-31 | 2010-03-09 | Cook Incorporated | Endoluminal graft |
WO2010120548A1 (en) * | 2009-04-17 | 2010-10-21 | Medtronic Vascular, Inc. | Mobile external coupling for branch vessel connection |
US8002816B2 (en) | 2007-12-21 | 2011-08-23 | Cleveland Clinic Foundation | Prosthesis for implantation in aorta and method of using same |
US8048140B2 (en) | 2004-03-31 | 2011-11-01 | Cook Medical Technologies Llc | Fenestrated intraluminal stent system |
US8070729B2 (en) | 2006-05-11 | 2011-12-06 | YMED, Inc. | Systems and methods for treating a vessel using focused force |
US8257430B2 (en) | 2003-12-17 | 2012-09-04 | Cook Medical Technologies Llc | Interconnected leg extensions for an endoluminal prosthesis |
US8486025B2 (en) | 2006-05-11 | 2013-07-16 | Ronald J. Solar | Systems and methods for treating a vessel using focused force |
US8540764B2 (en) | 2009-04-17 | 2013-09-24 | Medtronic Vascular, Inc. | Mobile external coupling for branch vessel connection |
US9050437B2 (en) | 2004-03-04 | 2015-06-09 | YMED, Inc. | Positioning device for ostial lesions |
US9125733B2 (en) | 2003-01-14 | 2015-09-08 | The Cleveland Clinic Foundation | Branched vessel endoluminal device |
US9358141B2 (en) | 2004-03-31 | 2016-06-07 | Cook Medical Technologies Llc | Stent deployment device |
US9504473B2 (en) | 2004-03-04 | 2016-11-29 | Y Med Inc. | Vessel treatment devices |
US9707113B2 (en) | 2006-04-19 | 2017-07-18 | Cook Medical Technologies Llc | Twin bifurcated stent graft |
EP3400913A1 (en) * | 2017-05-08 | 2018-11-14 | Bernshtein, Vadim | Intravascular bifurcation zone implants |
US11744723B2 (en) | 2004-03-04 | 2023-09-05 | Y Med, Inc. | Vessel treatment devices |
Families Citing this family (115)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6835203B1 (en) | 1996-11-04 | 2004-12-28 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
US7341598B2 (en) | 1999-01-13 | 2008-03-11 | Boston Scientific Scimed, Inc. | Stent with protruding branch portion for bifurcated vessels |
ES2273363T3 (en) * | 1996-11-04 | 2007-05-01 | Advanced Stent Technologies, Inc. | DOUBLE EXTENSIBLE STENT. |
US6692483B2 (en) | 1996-11-04 | 2004-02-17 | Advanced Stent Technologies, Inc. | Catheter with attached flexible side sheath |
US6599316B2 (en) | 1996-11-04 | 2003-07-29 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
US8211167B2 (en) | 1999-12-06 | 2012-07-03 | Boston Scientific Scimed, Inc. | Method of using a catheter with attached flexible side sheath |
US7220275B2 (en) * | 1996-11-04 | 2007-05-22 | Advanced Stent Technologies, Inc. | Stent with protruding branch portion for bifurcated vessels |
US7591846B2 (en) * | 1996-11-04 | 2009-09-22 | Boston Scientific Scimed, Inc. | Methods for deploying stents in bifurcations |
US6325826B1 (en) | 1998-01-14 | 2001-12-04 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
US8257425B2 (en) | 1999-01-13 | 2012-09-04 | Boston Scientific Scimed, Inc. | Stent with protruding branch portion for bifurcated vessels |
US7655030B2 (en) | 2003-07-18 | 2010-02-02 | Boston Scientific Scimed, Inc. | Catheter balloon systems and methods |
DE60045193D1 (en) * | 1999-01-27 | 2010-12-16 | Boston Scient Ltd | Bifurkationsstenteinführsystem |
US6290673B1 (en) | 1999-05-20 | 2001-09-18 | Conor Medsystems, Inc. | Expandable medical device delivery system and method |
US7387639B2 (en) * | 1999-06-04 | 2008-06-17 | Advanced Stent Technologies, Inc. | Short sleeve stent delivery catheter and methods |
AU7714500A (en) * | 1999-09-23 | 2001-04-24 | Advanced Stent Technologies, Inc. | Bifurcation stent system and method |
AU2002250189A1 (en) * | 2001-02-26 | 2002-09-12 | Scimed Life Systems, Inc. | Bifurcated stent and delivery system |
US8617231B2 (en) | 2001-05-18 | 2013-12-31 | Boston Scientific Scimed, Inc. | Dual guidewire exchange catheter system |
US20050121411A1 (en) * | 2002-10-29 | 2005-06-09 | Microfabrica Inc. | Medical devices and EFAB methods and apparatus for producing them |
US7147661B2 (en) | 2001-12-20 | 2006-12-12 | Boston Scientific Santa Rosa Corp. | Radially expandable stent |
US20030195609A1 (en) * | 2002-04-10 | 2003-10-16 | Scimed Life Systems, Inc. | Hybrid stent |
US7407509B2 (en) | 2003-01-14 | 2008-08-05 | The Cleveland Clinic Foundation | Branched vessel endoluminal device with fenestration |
US7758630B2 (en) * | 2003-04-14 | 2010-07-20 | Tryton Medical, Inc. | Helical ostium support for treating vascular bifurcations |
US8083791B2 (en) | 2003-04-14 | 2011-12-27 | Tryton Medical, Inc. | Method of treating a lumenal bifurcation |
US7731747B2 (en) | 2003-04-14 | 2010-06-08 | Tryton Medical, Inc. | Vascular bifurcation prosthesis with multiple thin fronds |
US7717953B2 (en) | 2004-10-13 | 2010-05-18 | Tryton Medical, Inc. | Delivery system for placement of prosthesis at luminal OS |
US7972372B2 (en) | 2003-04-14 | 2011-07-05 | Tryton Medical, Inc. | Kit for treating vascular bifurcations |
US8109987B2 (en) | 2003-04-14 | 2012-02-07 | Tryton Medical, Inc. | Method of treating a lumenal bifurcation |
US7481834B2 (en) * | 2003-04-14 | 2009-01-27 | Tryton Medical, Inc. | Stent for placement at luminal os |
US8298280B2 (en) | 2003-08-21 | 2012-10-30 | Boston Scientific Scimed, Inc. | Stent with protruding branch portion for bifurcated vessels |
US7344557B2 (en) | 2003-11-12 | 2008-03-18 | Advanced Stent Technologies, Inc. | Catheter balloon systems and methods |
US8007528B2 (en) | 2004-03-17 | 2011-08-30 | Boston Scientific Scimed, Inc. | Bifurcated stent |
JP5054524B2 (en) | 2004-06-08 | 2012-10-24 | アドバンスド ステント テクノロジーズ, インコーポレイテッド | Stent with protruding branch for branch pipe |
US20050278017A1 (en) * | 2004-06-09 | 2005-12-15 | Scimed Life Systems, Inc. | Overlapped stents for scaffolding, flexibility and MRI compatibility |
US20050277839A1 (en) * | 2004-06-10 | 2005-12-15 | Honeywell International, Inc. | Wireless flow measurement in arterial stent |
US9427340B2 (en) | 2004-12-14 | 2016-08-30 | Boston Scientific Scimed, Inc. | Stent with protruding branch portion for bifurcated vessels |
KR100614654B1 (en) * | 2005-01-04 | 2006-08-22 | 삼성전자주식회사 | RF transmitter for efficiently compensating output power variation due to temperature and process |
US8287583B2 (en) * | 2005-01-10 | 2012-10-16 | Taheri Laduca Llc | Apparatus and method for deploying an implantable device within the body |
US20060155366A1 (en) * | 2005-01-10 | 2006-07-13 | Laduca Robert | Apparatus and method for deploying an implantable device within the body |
JP4933450B2 (en) * | 2005-01-10 | 2012-05-16 | タヘリ ラドュカ エルエルシー | Apparatus and method for deploying an implantable device in a body |
US8128680B2 (en) * | 2005-01-10 | 2012-03-06 | Taheri Laduca Llc | Apparatus and method for deploying an implantable device within the body |
US20070150051A1 (en) * | 2005-01-10 | 2007-06-28 | Duke Fiduciary, Llc | Vascular implants and methods of fabricating the same |
US7396366B2 (en) * | 2005-05-11 | 2008-07-08 | Boston Scientific Scimed, Inc. | Ureteral stent with conforming retention structure |
US8317855B2 (en) | 2005-05-26 | 2012-11-27 | Boston Scientific Scimed, Inc. | Crimpable and expandable side branch cell |
US8480728B2 (en) | 2005-05-26 | 2013-07-09 | Boston Scientific Scimed, Inc. | Stent side branch deployment initiation geometry |
US20060271161A1 (en) * | 2005-05-26 | 2006-11-30 | Boston Scientific Scimed, Inc. | Selective treatment of stent side branch petals |
US7485140B2 (en) * | 2005-06-17 | 2009-02-03 | Boston Scientific Scimed, Inc. | Bifurcation stent assembly |
EP1933764A2 (en) * | 2005-09-02 | 2008-06-25 | Medtronic Vascular, Inc. | Methods and apparatus for treatment of aneurysms adjacent to branch arteries |
US8911491B2 (en) * | 2005-09-02 | 2014-12-16 | Medtronic Vascular, Inc. | Methods and apparatus for treatment of aneurysms adjacent branch arteries including branch artery flow lumen alignment |
US8043366B2 (en) | 2005-09-08 | 2011-10-25 | Boston Scientific Scimed, Inc. | Overlapping stent |
US8038706B2 (en) | 2005-09-08 | 2011-10-18 | Boston Scientific Scimed, Inc. | Crown stent assembly |
US7731741B2 (en) | 2005-09-08 | 2010-06-08 | Boston Scientific Scimed, Inc. | Inflatable bifurcation stent |
US20070067023A1 (en) * | 2005-09-22 | 2007-03-22 | Boston Scientific Scimed, Inc. | Tether guided stent side branch |
US8231669B2 (en) * | 2005-09-22 | 2012-07-31 | Boston Scientific Scimed, Inc. | Tether guided stent side branch |
US20070078511A1 (en) * | 2005-09-30 | 2007-04-05 | Boston Scientific Scimed, Inc. | Hybrid bifurcated stent |
US20070112418A1 (en) * | 2005-11-14 | 2007-05-17 | Boston Scientific Scimed, Inc. | Stent with spiral side-branch support designs |
US7766893B2 (en) * | 2005-12-07 | 2010-08-03 | Boston Scientific Scimed, Inc. | Tapered multi-chamber balloon |
US8435284B2 (en) | 2005-12-14 | 2013-05-07 | Boston Scientific Scimed, Inc. | Telescoping bifurcated stent |
US8343211B2 (en) | 2005-12-14 | 2013-01-01 | Boston Scientific Scimed, Inc. | Connectors for bifurcated stent |
US8551153B2 (en) * | 2005-12-20 | 2013-10-08 | Cordis Corporation | Prosthesis comprising a coiled stent and method of use thereof |
US7540881B2 (en) | 2005-12-22 | 2009-06-02 | Boston Scientific Scimed, Inc. | Bifurcation stent pattern |
US8821561B2 (en) * | 2006-02-22 | 2014-09-02 | Boston Scientific Scimed, Inc. | Marker arrangement for bifurcation catheter |
US20070208415A1 (en) * | 2006-03-06 | 2007-09-06 | Kevin Grotheim | Bifurcated stent with controlled drug delivery |
US20070208411A1 (en) * | 2006-03-06 | 2007-09-06 | Boston Scientific Scimed, Inc. | Bifurcated stent with surface area gradient |
US20070208419A1 (en) * | 2006-03-06 | 2007-09-06 | Boston Scientific Scimed, Inc. | Bifurcation stent with uniform side branch projection |
US20070208414A1 (en) * | 2006-03-06 | 2007-09-06 | Shawn Sorenson | Tapered strength rings on a bifurcated stent petal |
US7833264B2 (en) | 2006-03-06 | 2010-11-16 | Boston Scientific Scimed, Inc. | Bifurcated stent |
US8298278B2 (en) | 2006-03-07 | 2012-10-30 | Boston Scientific Scimed, Inc. | Bifurcated stent with improvement securement |
US20070225754A1 (en) * | 2006-03-21 | 2007-09-27 | Ethicon Endo-Surgery, Inc. | Medical instrument having an engagement mechanism |
US9757260B2 (en) * | 2006-03-30 | 2017-09-12 | Medtronic Vascular, Inc. | Prosthesis with guide lumen |
US20070233233A1 (en) * | 2006-03-31 | 2007-10-04 | Boston Scientific Scimed, Inc | Tethered expansion columns for controlled stent expansion |
US20070260304A1 (en) * | 2006-05-02 | 2007-11-08 | Daniel Gregorich | Bifurcated stent with minimally circumferentially projected side branch |
US7744643B2 (en) * | 2006-05-04 | 2010-06-29 | Boston Scientific Scimed, Inc. | Displaceable stent side branch structure |
EP2051673A2 (en) | 2006-06-23 | 2009-04-29 | Boston Scientific Limited | Bifurcated stent with twisted hinges |
EP2059291B1 (en) * | 2006-08-23 | 2017-04-05 | Abbott Laboratories | Catheter system for delivering medical devices |
US8216267B2 (en) | 2006-09-12 | 2012-07-10 | Boston Scientific Scimed, Inc. | Multilayer balloon for bifurcated stent delivery and methods of making and using the same |
US7951191B2 (en) | 2006-10-10 | 2011-05-31 | Boston Scientific Scimed, Inc. | Bifurcated stent with entire circumferential petal |
US8206429B2 (en) | 2006-11-02 | 2012-06-26 | Boston Scientific Scimed, Inc. | Adjustable bifurcation catheter incorporating electroactive polymer and methods of making and using the same |
US8414611B2 (en) * | 2006-11-03 | 2013-04-09 | Boston Scientific Scimed, Inc. | Main vessel constraining side-branch access balloon |
US8398695B2 (en) * | 2006-11-03 | 2013-03-19 | Boston Scientific Scimed, Inc. | Side branch stenting system using a main vessel constraining side branch access balloon and side branching stent |
US20110257723A1 (en) * | 2006-11-07 | 2011-10-20 | Dc Devices, Inc. | Devices and methods for coronary sinus pressure relief |
CA2664557C (en) | 2006-11-07 | 2015-05-26 | David Stephen Celermajer | Devices and methods for the treatment of heart failure |
US7842082B2 (en) | 2006-11-16 | 2010-11-30 | Boston Scientific Scimed, Inc. | Bifurcated stent |
US7959668B2 (en) | 2007-01-16 | 2011-06-14 | Boston Scientific Scimed, Inc. | Bifurcated stent |
WO2008098252A2 (en) | 2007-02-09 | 2008-08-14 | Taheri Laduca Llc | Vascular implants and methods of fabricating the same |
EP2114506A4 (en) | 2007-02-09 | 2014-11-05 | Taheri Laduca Llc | Apparatus and method for deploying an implantable device within the body |
US8118861B2 (en) | 2007-03-28 | 2012-02-21 | Boston Scientific Scimed, Inc. | Bifurcation stent and balloon assemblies |
US8647376B2 (en) | 2007-03-30 | 2014-02-11 | Boston Scientific Scimed, Inc. | Balloon fold design for deployment of bifurcated stent petal architecture |
GB2450085B (en) * | 2007-06-08 | 2009-10-28 | Univ Hospitals Of Leicester Nh | Collapsible stent |
US8486134B2 (en) | 2007-08-01 | 2013-07-16 | Boston Scientific Scimed, Inc. | Bifurcation treatment system and methods |
US7959669B2 (en) | 2007-09-12 | 2011-06-14 | Boston Scientific Scimed, Inc. | Bifurcated stent with open ended side branch support |
US8226701B2 (en) | 2007-09-26 | 2012-07-24 | Trivascular, Inc. | Stent and delivery system for deployment thereof |
US8066755B2 (en) | 2007-09-26 | 2011-11-29 | Trivascular, Inc. | System and method of pivoted stent deployment |
US8663309B2 (en) | 2007-09-26 | 2014-03-04 | Trivascular, Inc. | Asymmetric stent apparatus and method |
BRPI0817488A2 (en) | 2007-10-04 | 2017-05-16 | Trivascular Inc | low percutaneous profile modular vascular graft |
US8936567B2 (en) | 2007-11-14 | 2015-01-20 | Boston Scientific Scimed, Inc. | Balloon bifurcated lumen treatment |
US8083789B2 (en) | 2007-11-16 | 2011-12-27 | Trivascular, Inc. | Securement assembly and method for expandable endovascular device |
US8328861B2 (en) | 2007-11-16 | 2012-12-11 | Trivascular, Inc. | Delivery system and method for bifurcated graft |
US7833266B2 (en) | 2007-11-28 | 2010-11-16 | Boston Scientific Scimed, Inc. | Bifurcated stent with drug wells for specific ostial, carina, and side branch treatment |
US8277501B2 (en) | 2007-12-21 | 2012-10-02 | Boston Scientific Scimed, Inc. | Bi-stable bifurcated stent petal geometry |
EP2242456A2 (en) | 2007-12-31 | 2010-10-27 | Boston Scientific Scimed, Inc. | Bifurcation stent delivery system and methods |
US8932340B2 (en) | 2008-05-29 | 2015-01-13 | Boston Scientific Scimed, Inc. | Bifurcated stent and delivery system |
US8377108B2 (en) | 2008-06-02 | 2013-02-19 | Boston Scientific Scimed, Inc. | Staggered two balloon bifurcation catheter assembly and methods |
US8827954B2 (en) | 2008-06-05 | 2014-09-09 | Boston Scientific Scimed, Inc. | Deflatable bifurcated device |
US20100318170A1 (en) * | 2009-06-15 | 2010-12-16 | Richard Newhauser | Proximal catheter flap for managing wire twist |
US8366763B2 (en) | 2009-07-02 | 2013-02-05 | Tryton Medical, Inc. | Ostium support for treating vascular bifurcations |
BR112013011807A2 (en) * | 2010-11-15 | 2016-11-01 | Endovascular Dev Ab | '' set with guidewire and fixative for attachment to a blood vessel and tubular element '' |
US9707108B2 (en) | 2010-11-24 | 2017-07-18 | Tryton Medical, Inc. | Support for treating vascular bifurcations |
EP2673038B1 (en) | 2011-02-10 | 2017-07-19 | Corvia Medical, Inc. | Apparatus to create and maintain an intra-atrial pressure relief opening |
CA2845243C (en) | 2011-08-19 | 2020-07-14 | Khalid Al-Saadon | Stent system and deployment apparatus for bifurcated lesion |
US8992595B2 (en) | 2012-04-04 | 2015-03-31 | Trivascular, Inc. | Durable stent graft with tapered struts and stable delivery methods and devices |
US9498363B2 (en) | 2012-04-06 | 2016-11-22 | Trivascular, Inc. | Delivery catheter for endovascular device |
WO2013162724A1 (en) | 2012-04-26 | 2013-10-31 | Tryton Medical, Inc. | Support for treating vascular bifurcations |
US10709587B2 (en) * | 2013-11-05 | 2020-07-14 | Hameem Unnabi Changezi | Bifurcated stent and delivery system |
WO2016098113A1 (en) | 2014-12-18 | 2016-06-23 | Endospan Ltd. | Endovascular stent-graft with fatigue-resistant lateral tube |
JP6644824B2 (en) * | 2018-04-04 | 2020-02-12 | 矢崎総業株式会社 | Branch circuit body and branching method of electric wire |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4733665A (en) | 1985-11-07 | 1988-03-29 | Expandable Grafts Partnership | Expandable intraluminal graft, and method and apparatus for implanting an expandable intraluminal graft |
FR2678508A1 (en) * | 1991-07-04 | 1993-01-08 | Celsa Lg | Device for reinforcing the vessels of the human body |
EP0556850A1 (en) | 1992-02-21 | 1993-08-25 | Mintec Inc | Intraluminal stent |
WO1999015103A1 (en) * | 1997-09-23 | 1999-04-01 | Carlos Vonderwalde Freidberg | Bifurcated stent with flexible side portion |
WO1999036002A1 (en) * | 1996-11-04 | 1999-07-22 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
US5961548A (en) * | 1997-11-18 | 1999-10-05 | Shmulewitz; Ascher | Bifurcated two-part graft and methods of implantation |
EP0947180A2 (en) * | 1998-03-31 | 1999-10-06 | Cordis Corporation | Stent aneursym treatment system and method |
Family Cites Families (135)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1861769A (en) | 1930-06-27 | 1932-06-07 | Reinhold H Wappler | Catheterizing instrument |
US2845959A (en) | 1956-03-26 | 1958-08-05 | John B Sidebotham | Bifurcated textile tubes and method of weaving the same |
US4413989A (en) | 1980-09-08 | 1983-11-08 | Angiomedics Corporation | Expandable occlusion apparatus |
DE3115192C2 (en) | 1981-04-15 | 1983-05-19 | Christian Prof. Dr.med. 2400 Lübeck Krüger | Medical instrument |
US4774949A (en) | 1983-06-14 | 1988-10-04 | Fogarty Thomas J | Deflector guiding catheter |
US4730616A (en) | 1983-08-12 | 1988-03-15 | Advanced Cardiovascular Systems, Inc. | Multiple probe angioplasty apparatus and method |
JPH0763489B2 (en) | 1986-10-31 | 1995-07-12 | 宇部興産株式会社 | Medical tube |
DE3715699A1 (en) | 1987-05-12 | 1988-12-01 | Foerster Ernst | CATHETER AND ENDOSCOPE FOR THE TRANSPAPILLARY DISPLAY OF THE GALLEN BLADDER |
US4769005A (en) | 1987-08-06 | 1988-09-06 | Robert Ginsburg | Selective catheter guide |
JPH01171571A (en) | 1987-12-28 | 1989-07-06 | Yoshiharu Yamawaki | Balloon catheter |
US4896670A (en) | 1988-04-19 | 1990-01-30 | C. R. Bard, Inc. | Kissing balloon catheter |
US4994071A (en) | 1989-05-22 | 1991-02-19 | Cordis Corporation | Bifurcating stent apparatus and method |
AR246020A1 (en) | 1990-10-03 | 1994-03-30 | Hector Daniel Barone Juan Carl | A ball device for implanting an intraluminous aortic prosthesis, for repairing aneurysms. |
ATE121303T1 (en) | 1990-10-04 | 1995-05-15 | Schneider Europ Ag | BALLOON DILATION CATHETER. |
US5156620A (en) | 1991-02-04 | 1992-10-20 | Pigott John P | Intraluminal graft/stent and balloon catheter for insertion thereof |
US5628783A (en) | 1991-04-11 | 1997-05-13 | Endovascular Technologies, Inc. | Bifurcated multicapsule intraluminal grafting system and method |
CA2065634C (en) | 1991-04-11 | 1997-06-03 | Alec A. Piplani | Endovascular graft having bifurcation and apparatus and method for deploying the same |
US5693084A (en) | 1991-10-25 | 1997-12-02 | Cook Incorporated | Expandable transluminal graft prosthesis for repair of aneurysm |
US5599300A (en) | 1992-05-11 | 1997-02-04 | Arrow Precision Products, Inc. | Method for electrosurgically obtaining access to the biliary tree with an adjustably positionable needle-knife |
US5342387A (en) | 1992-06-18 | 1994-08-30 | American Biomed, Inc. | Artificial support for a blood vessel |
US5672153A (en) | 1992-08-12 | 1997-09-30 | Vidamed, Inc. | Medical probe device and method |
US5320605A (en) | 1993-01-22 | 1994-06-14 | Harvinder Sahota | Multi-wire multi-balloon catheter |
US5632772A (en) | 1993-10-21 | 1997-05-27 | Corvita Corporation | Expandable supportive branched endoluminal grafts |
US5639278A (en) | 1993-10-21 | 1997-06-17 | Corvita Corporation | Expandable supportive bifurcated endoluminal grafts |
US5443497A (en) | 1993-11-22 | 1995-08-22 | The Johns Hopkins University | Percutaneous prosthetic by-pass graft and method of use |
US5607444A (en) | 1993-12-02 | 1997-03-04 | Advanced Cardiovascular Systems, Inc. | Ostial stent for bifurcations |
US5609627A (en) | 1994-02-09 | 1997-03-11 | Boston Scientific Technology, Inc. | Method for delivering a bifurcated endoluminal prosthesis |
US6165213A (en) | 1994-02-09 | 2000-12-26 | Boston Scientific Technology, Inc. | System and method for assembling an endoluminal prosthesis |
US6051020A (en) | 1994-02-09 | 2000-04-18 | Boston Scientific Technology, Inc. | Bifurcated endoluminal prosthesis |
US5824044A (en) | 1994-05-12 | 1998-10-20 | Endovascular Technologies, Inc. | Bifurcated multicapsule intraluminal grafting system |
EP0792627B2 (en) | 1994-06-08 | 2003-10-29 | Cardiovascular Concepts, Inc. | System for forming a bifurcated graft |
US5609605A (en) | 1994-08-25 | 1997-03-11 | Ethicon, Inc. | Combination arterial stent |
CA2134997C (en) | 1994-11-03 | 2009-06-02 | Ian M. Penn | Stent |
CA2175720C (en) | 1996-05-03 | 2011-11-29 | Ian M. Penn | Bifurcated stent and method for the manufacture and delivery of same |
US5613980A (en) | 1994-12-22 | 1997-03-25 | Chauhan; Tusharsindhu C. | Bifurcated catheter system and method |
NL9500094A (en) | 1995-01-19 | 1996-09-02 | Industrial Res Bv | Y-shaped stent and method of deployment. |
US5755770A (en) | 1995-01-31 | 1998-05-26 | Boston Scientific Corporatiion | Endovascular aortic graft |
US5683449A (en) | 1995-02-24 | 1997-11-04 | Marcade; Jean Paul | Modular bifurcated intraluminal grafts and methods for delivering and assembling same |
EP0813397A4 (en) | 1995-03-10 | 1999-10-06 | Cardiovascular Concepts Inc | Tubular endoluminar prosthesis having oblique ends |
US5709713A (en) | 1995-03-31 | 1998-01-20 | Cardiovascular Concepts, Inc. | Radially expansible vascular prosthesis having reversible and other locking structures |
US5575771A (en) | 1995-04-24 | 1996-11-19 | Walinsky; Paul | Balloon catheter with external guidewire |
FR2733682B1 (en) | 1995-05-04 | 1997-10-31 | Dibie Alain | ENDOPROSTHESIS FOR THE TREATMENT OF STENOSIS ON BIFURCATIONS OF BLOOD VESSELS AND LAYING EQUIPMENT THEREFOR |
EP0830109B1 (en) | 1995-06-08 | 2003-10-15 | Ave Galway Limited | Bifurcated endovascular stent |
FR2737969B1 (en) | 1995-08-24 | 1998-01-30 | Rieu Regis | INTRALUMINAL ENDOPROSTHESIS IN PARTICULAR FOR ANGIOPLASTY |
US5556382A (en) | 1995-08-29 | 1996-09-17 | Scimed Life Systems, Inc. | Balloon perfusion catheter |
US5669924A (en) | 1995-10-26 | 1997-09-23 | Shaknovich; Alexander | Y-shuttle stent assembly for bifurcating vessels and method of using the same |
FR2740346A1 (en) | 1995-10-30 | 1997-04-30 | Debiotech Sa | ANGIOPLASTY DEVICE FOR ARTERIAL BIFURCATION |
US5632762A (en) | 1995-11-09 | 1997-05-27 | Hemodynamics, Inc. | Ostial stent balloon |
US6045557A (en) | 1995-11-10 | 2000-04-04 | Baxter International Inc. | Delivery catheter and method for positioning an intraluminal graft |
US5824040A (en) * | 1995-12-01 | 1998-10-20 | Medtronic, Inc. | Endoluminal prostheses and therapies for highly variable body lumens |
AUPN775296A0 (en) | 1996-01-25 | 1996-02-22 | Endogad Research Pty Limited | Directional catheter |
US6436104B2 (en) | 1996-01-26 | 2002-08-20 | Cordis Corporation | Bifurcated axially flexible stent |
US6258116B1 (en) | 1996-01-26 | 2001-07-10 | Cordis Corporation | Bifurcated axially flexible stent |
US6017363A (en) | 1997-09-22 | 2000-01-25 | Cordis Corporation | Bifurcated axially flexible stent |
BE1010183A3 (en) | 1996-04-25 | 1998-02-03 | Dereume Jean Pierre Georges Em | Luminal endoprosthesis FOR BRANCHING CHANNELS OF A HUMAN OR ANIMAL BODY AND MANUFACTURING METHOD THEREOF. |
FR2748199B1 (en) * | 1996-05-02 | 1998-10-09 | Braun Celsa Sa | TRANSCUTANEOUS SURGICAL ANASTOMOSABLE VASCULAR PROSTHESIS |
US6251133B1 (en) | 1996-05-03 | 2001-06-26 | Medinol Ltd. | Bifurcated stent with improved side branch aperture and method of making same |
UA58485C2 (en) | 1996-05-03 | 2003-08-15 | Медінол Лтд. | Method for manufacture of bifurcated stent (variants) and bifurcated stent (variants) |
US5617878A (en) | 1996-05-31 | 1997-04-08 | Taheri; Syde A. | Stent and method for treatment of aortic occlusive disease |
IL122904A0 (en) | 1996-05-31 | 1998-08-16 | Bard Galway Ltd | Bifurcated endovascular stents and method and apparatus for their placement |
US5755773A (en) | 1996-06-04 | 1998-05-26 | Medtronic, Inc. | Endoluminal prosthetic bifurcation shunt |
FR2749500B1 (en) | 1996-06-06 | 1998-11-20 | Jacques Seguin | DEVICE ALLOWING THE TREATMENT OF BODY DUCTS AT THE LEVEL OF A BIFURCATION |
US5697971A (en) | 1996-06-11 | 1997-12-16 | Fischell; Robert E. | Multi-cell stent with cells having differing characteristics |
US6325819B1 (en) | 1996-08-19 | 2001-12-04 | Cook Incorporated | Endovascular prosthetic device, an endovascular graft prothesis with such a device, and a method for repairing an abdominal aortic aneurysm |
CZ289275B6 (en) | 1996-08-21 | 2001-12-12 | Milan Mudr. Csc. Krajíček | Anastomosis insert in vascular system |
US5749825A (en) | 1996-09-18 | 1998-05-12 | Isostent, Inc. | Means method for treatment of stenosed arterial bifurcations |
US5755778A (en) | 1996-10-16 | 1998-05-26 | Nitinol Medical Technologies, Inc. | Anastomosis device |
US6325826B1 (en) | 1998-01-14 | 2001-12-04 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
US6599316B2 (en) | 1996-11-04 | 2003-07-29 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
US6596020B2 (en) | 1996-11-04 | 2003-07-22 | Advanced Stent Technologies, Inc. | Method of delivering a stent with a side opening |
US5972017A (en) | 1997-04-23 | 1999-10-26 | Vascular Science Inc. | Method of installing tubular medical graft connectors |
FR2756173B1 (en) | 1996-11-22 | 1999-02-12 | Marcade Jean Paul | MODULAR AND EXPANDABLE ENDOPROSTHESIS FOR THE ARTERIAL NETWORK |
US5749890A (en) | 1996-12-03 | 1998-05-12 | Shaknovich; Alexander | Method and system for stent placement in ostial lesions |
DE29701758U1 (en) | 1997-02-01 | 1997-03-27 | Jomed Implantate Gmbh | Radially expandable stent for implantation in a body vessel, particularly in the area of a vascular branch |
US5720735A (en) | 1997-02-12 | 1998-02-24 | Dorros; Gerald | Bifurcated endovascular catheter |
US6096073A (en) | 1997-02-25 | 2000-08-01 | Scimed Life Systems, Inc. | Method of deploying a stent at a lesion site located at a bifurcation in a parent vessel |
FR2760351B1 (en) | 1997-03-04 | 1999-05-28 | Bernard Glatt | HELICAL STENT FORMING DEVICE AND MANUFACTURING METHOD THEREOF |
US6048360A (en) | 1997-03-18 | 2000-04-11 | Endotex Interventional Systems, Inc. | Methods of making and using coiled sheet graft for single and bifurcated lumens |
US6302908B1 (en) | 1997-03-24 | 2001-10-16 | Juan Carlos Parodi | Arterial graft device and method of positioning the same |
US5995608A (en) | 1997-03-28 | 1999-11-30 | Confertech Systems Inc. | Method and apparatus for on-demand teleconferencing |
US6258115B1 (en) | 1997-04-23 | 2001-07-10 | Artemis Medical, Inc. | Bifurcated stent and distal protection system |
US6013054A (en) | 1997-04-28 | 2000-01-11 | Advanced Cardiovascular Systems, Inc. | Multifurcated balloon catheter |
DE29708803U1 (en) | 1997-05-17 | 1997-07-31 | Jomed Implantate Gmbh | Radially expandable stent for implantation in a body vessel in the area of a vascular branch |
US5906641A (en) | 1997-05-27 | 1999-05-25 | Schneider (Usa) Inc | Bifurcated stent graft |
US6102938A (en) | 1997-06-17 | 2000-08-15 | Medtronic Inc. | Endoluminal prosthetic bifurcation shunt |
US5855600A (en) | 1997-08-01 | 1999-01-05 | Inflow Dynamics Inc. | Flexible implantable stent with composite design |
US6221090B1 (en) | 1997-08-13 | 2001-04-24 | Advanced Cardiovascular Systems, Inc. | Stent delivery assembly |
US6361544B1 (en) | 1997-08-13 | 2002-03-26 | Advanced Cardiovascular Systems, Inc. | Stent and catheter assembly and method for treating bifurcations |
US6165195A (en) | 1997-08-13 | 2000-12-26 | Advanced Cardiovascylar Systems, Inc. | Stent and catheter assembly and method for treating bifurcations |
US6306164B1 (en) | 1997-09-05 | 2001-10-23 | C. R. Bard, Inc. | Short body endoprosthesis |
US5984955A (en) | 1997-09-11 | 1999-11-16 | Wisselink; Willem | System and method for endoluminal grafting of bifurcated or branched vessels |
US6056722A (en) | 1997-09-18 | 2000-05-02 | Iowa-India Investments Company Limited Of Douglas | Delivery mechanism for balloons, drugs, stents and other physical/mechanical agents and methods of use |
US6231598B1 (en) | 1997-09-24 | 2001-05-15 | Med Institute, Inc. | Radially expandable stent |
US6520988B1 (en) | 1997-09-24 | 2003-02-18 | Medtronic Ave, Inc. | Endolumenal prosthesis and method of use in bifurcation regions of body lumens |
US6086611A (en) | 1997-09-25 | 2000-07-11 | Ave Connaught | Bifurcated stent |
US5893887A (en) | 1997-10-14 | 1999-04-13 | Iowa-India Investments Company Limited | Stent for positioning at junction of bifurcated blood vessel and method of making |
US6033435A (en) | 1997-11-03 | 2000-03-07 | Divysio Solutions Ulc | Bifurcated stent and method for the manufacture and delivery of same |
AU1170199A (en) | 1997-11-07 | 1999-05-31 | Ave Connaught | Balloon catheter for repairing bifurcated vessels |
US6030414A (en) | 1997-11-13 | 2000-02-29 | Taheri; Syde A. | Variable stent and method for treatment of arterial disease |
US6129754A (en) | 1997-12-11 | 2000-10-10 | Uni-Cath Inc. | Stent for vessel with branch |
US6217527B1 (en) | 1998-09-30 | 2001-04-17 | Lumend, Inc. | Methods and apparatus for crossing vascular occlusions |
CA2220864A1 (en) | 1998-01-20 | 1999-07-20 | Nisar Huq | A bifurcation stent |
EP1054647B1 (en) | 1998-02-12 | 2005-12-21 | Thomas R. Marotta | Endovascular prosthesis |
US5938697A (en) | 1998-03-04 | 1999-08-17 | Scimed Life Systems, Inc. | Stent having variable properties |
US6261273B1 (en) | 1998-05-07 | 2001-07-17 | Carlos E. Ruiz | Access system for branched vessels amd methods of use |
US6093203A (en) | 1998-05-13 | 2000-07-25 | Uflacker; Renan | Stent or graft support structure for treating bifurcated vessels having different diameter portions and methods of use and implantation |
US6168621B1 (en) | 1998-05-29 | 2001-01-02 | Scimed Life Systems, Inc. | Balloon expandable stent with a self-expanding portion |
US6129738A (en) | 1998-06-20 | 2000-10-10 | Medtronic Ave, Inc. | Method and apparatus for treating stenoses at bifurcated regions |
US6264662B1 (en) | 1998-07-21 | 2001-07-24 | Sulzer Vascutek Ltd. | Insertion aid for a bifurcated prosthesis |
US6143002A (en) | 1998-08-04 | 2000-11-07 | Scimed Life Systems, Inc. | System for delivering stents to bifurcation lesions |
US6312461B1 (en) | 1998-08-21 | 2001-11-06 | John D. Unsworth | Shape memory tubular stent |
US6117117A (en) | 1998-08-24 | 2000-09-12 | Advanced Cardiovascular Systems, Inc. | Bifurcated catheter assembly |
US6238432B1 (en) | 1998-08-25 | 2001-05-29 | Juan Carlos Parodi | Stent graft device for treating abdominal aortic aneurysms |
US6368345B1 (en) | 1998-09-30 | 2002-04-09 | Edwards Lifesciences Corporation | Methods and apparatus for intraluminal placement of a bifurcated intraluminal garafat |
US6273909B1 (en) | 1998-10-05 | 2001-08-14 | Teramed Inc. | Endovascular graft system |
US6017324A (en) | 1998-10-20 | 2000-01-25 | Tu; Lily Chen | Dilatation catheter having a bifurcated balloon |
US6197049B1 (en) | 1999-02-17 | 2001-03-06 | Endologix, Inc. | Articulating bifurcation graft |
DE69927055T2 (en) | 1998-12-11 | 2006-06-29 | Endologix, Inc., Irvine | ENDOLUMINAL VASCULAR PROSTHESIS |
US6059824A (en) | 1998-12-23 | 2000-05-09 | Taheri; Syde A. | Mated main and collateral stent and method for treatment of arterial disease |
AU758027B2 (en) | 1999-02-26 | 2003-03-13 | Lemaitre Vascular, Inc. | Catheter assembly with endoluminal prosthesis and method for placing |
US6248122B1 (en) | 1999-02-26 | 2001-06-19 | Vascular Architects, Inc. | Catheter with controlled release endoluminal prosthesis |
US6261316B1 (en) | 1999-03-11 | 2001-07-17 | Endologix, Inc. | Single puncture bifurcation graft deployment system |
US6290673B1 (en) | 1999-05-20 | 2001-09-18 | Conor Medsystems, Inc. | Expandable medical device delivery system and method |
US6383213B2 (en) | 1999-10-05 | 2002-05-07 | Advanced Cardiovascular Systems, Inc. | Stent and catheter assembly and method for treating bifurcations |
US6325823B1 (en) * | 1999-10-29 | 2001-12-04 | Revasc Corporation | Endovascular prosthesis accommodating torsional and longitudinal displacements and methods of use |
JP2001159722A (en) | 1999-12-02 | 2001-06-12 | Sumitomo Electric Ind Ltd | Multicore optical fiber and method for manufacturing multicore optical fiber |
US6387120B2 (en) | 1999-12-09 | 2002-05-14 | Advanced Cardiovascular Systems, Inc. | Stent and catheter assembly and method for treating bifurcations |
US6221080B1 (en) | 1999-12-10 | 2001-04-24 | John A. Power | Bifurcation lesion stenting catheter |
US6254593B1 (en) | 1999-12-10 | 2001-07-03 | Advanced Cardiovascular Systems, Inc. | Bifurcated stent delivery system having retractable sheath |
US6210431B1 (en) | 1999-12-10 | 2001-04-03 | John A. Power | Ostial bifurcation lesion stenting catheter |
ATE339563T1 (en) | 1999-12-24 | 2006-10-15 | T2 Systems Ltd | STRUCTURAL ELEMENTS AND ASSOCIATED PARTS |
US6325822B1 (en) | 2000-01-31 | 2001-12-04 | Scimed Life Systems, Inc. | Braided stent having tapered filaments |
US6319278B1 (en) | 2000-03-03 | 2001-11-20 | Stephen F. Quinn | Low profile device for the treatment of vascular abnormalities |
US6210433B1 (en) | 2000-03-17 | 2001-04-03 | LARRé JORGE CASADO | Stent for treatment of lesions of bifurcated vessels |
US6334864B1 (en) | 2000-05-17 | 2002-01-01 | Aga Medical Corp. | Alignment member for delivering a non-symmetric device with a predefined orientation |
-
2002
- 2002-02-26 WO PCT/US2002/006155 patent/WO2002067815A1/en not_active Application Discontinuation
- 2002-02-26 US US10/084,766 patent/US6695877B2/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4733665A (en) | 1985-11-07 | 1988-03-29 | Expandable Grafts Partnership | Expandable intraluminal graft, and method and apparatus for implanting an expandable intraluminal graft |
US4733665B1 (en) | 1985-11-07 | 1994-01-11 | Expandable Grafts Partnership | Expandable intraluminal graft,and method and apparatus for implanting an expandable intraluminal graft |
US4733665C2 (en) | 1985-11-07 | 2002-01-29 | Expandable Grafts Partnership | Expandable intraluminal graft and method and apparatus for implanting an expandable intraluminal graft |
FR2678508A1 (en) * | 1991-07-04 | 1993-01-08 | Celsa Lg | Device for reinforcing the vessels of the human body |
EP0556850A1 (en) | 1992-02-21 | 1993-08-25 | Mintec Inc | Intraluminal stent |
WO1999036002A1 (en) * | 1996-11-04 | 1999-07-22 | Advanced Stent Technologies, Inc. | Extendible stent apparatus |
WO1999015103A1 (en) * | 1997-09-23 | 1999-04-01 | Carlos Vonderwalde Freidberg | Bifurcated stent with flexible side portion |
US5961548A (en) * | 1997-11-18 | 1999-10-05 | Shmulewitz; Ascher | Bifurcated two-part graft and methods of implantation |
EP0947180A2 (en) * | 1998-03-31 | 1999-10-06 | Cordis Corporation | Stent aneursym treatment system and method |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9125733B2 (en) | 2003-01-14 | 2015-09-08 | The Cleveland Clinic Foundation | Branched vessel endoluminal device |
US7105020B2 (en) | 2003-01-14 | 2006-09-12 | The Cleveland Clinic Foundation | Branched vessel endoluminal device |
US10631972B2 (en) | 2003-01-14 | 2020-04-28 | The Cleveland Clinic Foundation | Branched vessel endoluminal device |
US9943400B2 (en) | 2003-01-14 | 2018-04-17 | The Cleveland Clinic Foundation | Branched vessel endoluminal device |
WO2005046526A1 (en) * | 2003-11-08 | 2005-05-26 | Cook Incorporated | Aorta and branch vessel stent grafts, system and methods |
US9974674B2 (en) | 2003-11-08 | 2018-05-22 | Cook Medical Technologies Llc | Branch vessel prothesis with positional indicator system and method |
US9078780B2 (en) | 2003-11-08 | 2015-07-14 | Cook Medical Technologies Llc | Balloon flareable branch vessel prosthesis and method |
US9095461B2 (en) | 2003-11-08 | 2015-08-04 | Cook Medical Technologies Llc | Aorta and branch vessel stent grafts and method |
US8257430B2 (en) | 2003-12-17 | 2012-09-04 | Cook Medical Technologies Llc | Interconnected leg extensions for an endoluminal prosthesis |
US11744723B2 (en) | 2004-03-04 | 2023-09-05 | Y Med, Inc. | Vessel treatment devices |
US9504473B2 (en) | 2004-03-04 | 2016-11-29 | Y Med Inc. | Vessel treatment devices |
US9050437B2 (en) | 2004-03-04 | 2015-06-09 | YMED, Inc. | Positioning device for ostial lesions |
US8048140B2 (en) | 2004-03-31 | 2011-11-01 | Cook Medical Technologies Llc | Fenestrated intraluminal stent system |
US7674284B2 (en) | 2004-03-31 | 2010-03-09 | Cook Incorporated | Endoluminal graft |
US9358141B2 (en) | 2004-03-31 | 2016-06-07 | Cook Medical Technologies Llc | Stent deployment device |
US8523934B2 (en) | 2004-03-31 | 2013-09-03 | Cook Medical Technologies Llc | Fenestrated intraluminal stent system |
US9707113B2 (en) | 2006-04-19 | 2017-07-18 | Cook Medical Technologies Llc | Twin bifurcated stent graft |
US10143576B2 (en) | 2006-04-19 | 2018-12-04 | Cook Medical Technologies Llc | Twin bifurcated stent graft |
US8486025B2 (en) | 2006-05-11 | 2013-07-16 | Ronald J. Solar | Systems and methods for treating a vessel using focused force |
US8262621B2 (en) | 2006-05-11 | 2012-09-11 | YMED, Inc. | Systems and methods for treating a vessel using focused force |
US8070729B2 (en) | 2006-05-11 | 2011-12-06 | YMED, Inc. | Systems and methods for treating a vessel using focused force |
EP2364677A1 (en) * | 2007-12-06 | 2011-09-14 | Translumina GmbH | Implantable vessel support |
DE102007060497A1 (en) * | 2007-12-06 | 2009-06-10 | Joline Gmbh & Co. Kg | Implantable vascular support |
US8002816B2 (en) | 2007-12-21 | 2011-08-23 | Cleveland Clinic Foundation | Prosthesis for implantation in aorta and method of using same |
US8540764B2 (en) | 2009-04-17 | 2013-09-24 | Medtronic Vascular, Inc. | Mobile external coupling for branch vessel connection |
US8506622B2 (en) | 2009-04-17 | 2013-08-13 | Medtronic Vascular, Inc. | Mobile external coupling for branch vessel connection |
WO2010120548A1 (en) * | 2009-04-17 | 2010-10-21 | Medtronic Vascular, Inc. | Mobile external coupling for branch vessel connection |
EP3400913A1 (en) * | 2017-05-08 | 2018-11-14 | Bernshtein, Vadim | Intravascular bifurcation zone implants |
Also Published As
Publication number | Publication date |
---|---|
US20020173840A1 (en) | 2002-11-21 |
US6695877B2 (en) | 2004-02-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6695877B2 (en) | Bifurcated stent | |
US8632579B2 (en) | Bifurcated stent and delivery system | |
CA2497746C (en) | Bifurcated stent | |
US7799064B2 (en) | Bifurcated stent and delivery system | |
US5824052A (en) | Coiled sheet stent having helical articulation and methods of use | |
EP0975277B1 (en) | Endolumenal stent-graft with leak-resistant seal | |
EP0880948B1 (en) | Stent and stent-graft for treating branched vessels | |
US5556414A (en) | Composite intraluminal graft | |
US6451051B2 (en) | Intravascular folded tubular endoprosthesis | |
US20060271164A1 (en) | Implantable vascular graft | |
US7628806B2 (en) | Stent with improved resistance to migration | |
US20040230295A1 (en) | Implantable vascular graft | |
AU1669501A (en) | A self-expanding stent-graft | |
EP1477134A2 (en) | Stent and stent-graft for treating branched vessels |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |