WO2004096013A2 - Methods and devices for temporarily sealing a blood vessel during an anastomosis - Google Patents

Methods and devices for temporarily sealing a blood vessel during an anastomosis Download PDF

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Publication number
WO2004096013A2
WO2004096013A2 PCT/US2004/012843 US2004012843W WO2004096013A2 WO 2004096013 A2 WO2004096013 A2 WO 2004096013A2 US 2004012843 W US2004012843 W US 2004012843W WO 2004096013 A2 WO2004096013 A2 WO 2004096013A2
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WO
WIPO (PCT)
Prior art keywords
blood vessel
intravascular
extravascular
opening
anastomosis
Prior art date
Application number
PCT/US2004/012843
Other languages
French (fr)
Other versions
WO2004096013A3 (en
Inventor
Dean F. Carson
Michael Reo
David H. Cole
Darin C. Gittings
Mark Foley
Original Assignee
Ventrica, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ventrica, Inc. filed Critical Ventrica, Inc.
Publication of WO2004096013A2 publication Critical patent/WO2004096013A2/en
Publication of WO2004096013A3 publication Critical patent/WO2004096013A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12027—Type of occlusion
    • A61B17/12036—Type of occlusion partial occlusion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12027—Type of occlusion
    • A61B17/1204—Type of occlusion temporary occlusion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
    • A61B17/12172—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure having a pre-set deployed three-dimensional shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
    • A61B2017/00646—Type of implements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00876—Material properties magnetic

Definitions

  • the present invention is directed to methods and devices for temporarily sealing an opening in a body cavity or lumen such as a blood vessel.
  • the present invention is suited for sealing the opening in the aorta when forming an anastomosis for coronary bypass surgery.
  • Clamp-type devices are disclosed in U.S. Patent No. 5,447,515 and 6,620,177.
  • a drawback with these clamp-type devices is that a separate incision is required for one arm of the clamp.
  • the present invention is directed to additional methods and devices for sealing an opening in a blood vessel.
  • the present invention is directed to methods and device for temporarily sealing a body cavity or body lumen such as the aorta.
  • a sealing device which has intravascular and extravascular elements magnetically attracted to one another.
  • One or both of the elements may have magnetic components or elements to create the magnetic attraction.
  • the intravascular element has a flexible body which conforms to the shape of the inner wall of the blood vessel.
  • An opening is formed in the blood vessel which is sealed by the intravascular element.
  • the intravascular element may be delivered endovascularly with a catheter, or through a cannula or trocar near the aorta and adjacent to the anastomosis.
  • the device may also be delivered through the same opening that is created to form the anastomosis which provides the benefits described below.
  • the intravascular element has a flexible body which can deform to the shape of the inner wall of the aorta and, in particular, is flexible to be deformed by magnetic forces exerted by the extravascular element in conformance with the shape of the aorta. In this manner, the extravascular element may be used to deploy and anchor the intravascular element.
  • the intravascular and extravascular elements may be coupled together with a connector extending through the opening used to create the anastomosis.
  • the connector may acts like a spring which clamps the device to the blood vessel.
  • the spring may be created with a wire which acts like a coil spring or with any other suitable structure which provides a spring force.
  • the connector may also simply be a tension element, such as a wire or filament, which is tensioned to create a clamping force between the intravascular and extravascular elements.
  • Fig. 1 shows an intravascular part of a device for temporarily sealing an opening in a blood vessel when creating an anastomosis.
  • Fig. 2 shows the intravascular component collapsed within a delivery element
  • Fig. 3 shows the intravascular component with elements advanced into a channel in the device.
  • Fig. 4 shows a cross-sectional view of the intravascular component.
  • Fig. 5 shows an extravascular component of the device of Fig. 1.
  • Fig. 6 shows the device' of Fig. 1 mounted to a blood vessel.
  • Fig. 7 is an isometric view of another device for temporarily sealing an opening in a blood vessel.
  • Fig. 8 shows a plan view of the device of Fig. 7.
  • Fig. 9 shows a side view of the device of Fig. 7.
  • Fig. 10 shows another device for temporarily sealing an opening in a blood vessel.
  • the present invention is directed to devices and methods for temporarily sealing an opening in a body cavity or lumen such as a blood vessel.
  • the present invention may be useful for temporarily sealing an opening in the aorta when creating an anastomosis during bypass surgery.
  • the descriptions below related to the aorta are equally applicable to use in any body lumen or cavity.
  • the term graft vessel may mean any type of vessel including any biological or synthetic graft including, but not limited to, the internal mammary artery, saphenous vein, foreign tissue grafts and synthetic grafts such as PTFE grafts.
  • a device 2 for temporarily sealing an opening in a blood vessel in accordance with the present invention is shown.
  • the device 2 includes an extravascular component 4 and an intravascular component 6.
  • the components 4, 6 are magnetically attracted to one another to provide a clamping force to temporarily secure the device 2 to the vessel or organ. Either one or both of the components 4, 6 may be magnetic.
  • the extravascular component 6 may be split to facilitate placement and removal.
  • the component 6 may have a number of poles as shown in Fig. 5 or may have fewer poles without departing from the invention.
  • the intravascular component 6 may be delivered through a trocar or cannula 8 near the desired anastomosis site, through a catheter from a peripheral vessel such as the femoral artery, or through the same opening used to form the anastomosis.
  • the intravascular component 6 has a flexible body 14 which is collapsed in a delivery element 15 such as a catheter, cannula or trocar.
  • the component 6 may have one or more elements 10 which are magnetically attracted to the extravascular component 4.
  • the elements 10 may be spherical although any other shape may be used.
  • the elements 10 may be fixed to the flexible body 14 or may be movable within a channel or lumen 12 in a flexible body 14 so that the device 2 may be more easily collapsed into a relatively small shape.
  • the flexible body 14 may be delivered first followed by advancement of the element 10 into the flexible body when it is desired to expand the intravascular component 6. Removal of the element 10 from the flexible body 14 may facilitate advancement, positioning and removal of the device. This feature may be particularly advantageous when the delivery element 15 is a catheter for endovascular delivery or when the delivery element 15 is delivered through the same opening used to form the anastomosis.
  • the element 10 is advanced into a channel or pocket 22 in the body. Advancement of the element 10 provides a more defined shape to the intravascular component 6. Even with the element 10 in place, however, the intravascular component 6 is still flexible enough to be deformed by magnetic forces exerted by the extravascular component 4 so that the intravascular component 6 conforms to the shape of the aorta.
  • the element 10 may be advanced into the flexible body 14 using fluid pressure, a string 17 coupled to the elements 10 or by simply manipulating the element 10 itself.
  • the channel or lumen 12 may extend essentially radially from an outer edge of the device or may extend longitudinally from near the middle of the device when the device is introduced through the opening used to create the anastomosis as shown in Fig. 6.
  • the flexible body 14 is made of a soft, conformable material, such as silicone, polyurethane or other suitable biocompatible material, to conform to the shape of the vessel.
  • the flexible body 14 may include a thin membrane 20 which seals the opening in the vessel and is surrounded by the channel, lumen or pocket 22.
  • the intravascular component 6 is advanced to a position adjacent the inner wall of the aorta using the delivery element 15.
  • the component 6 may be delivered with a catheter through a peripheral vessel such as the femoral artery, through a cannula or trocar in the aorta; or directly through the opening used to form the anastomosis as shown in Fig. 6.
  • the component 6 is initially delivered out of the delivery element 15 in a collapsed position.
  • the element(s) 10 are then moved into the channel or lumen 22 in the body 14 to provide a generally circular shape to the component 6.
  • the extravascular component 4 is then moved against the outer wall of the aorta so that the magnetic forces exerted on the intravascular component 6 cause the component 6 to conform to the shape of the aorta and to clamp the aorta between the components 4, 6.
  • the sealing device 30 has a membrane 32 which seals against the inner wall of the blood vessel.
  • the device 30 also includes an intravascular part 32 and an extravascular part 34 which contact the inner and outer walls of the blood vessel, respectively.
  • a connector 36 extends between the intravascular and extravascular parts 32, 34.
  • the connector 36 extends through the opening in the blood vessel and provides a spring force which clamps the device 30 to the blood vessel.
  • the device 30 may include a wire 38, such as a superelastic wire, which forms a loop 37 at the intravascular part, a loop 39 at the extravascular part and length of wire which at the connector 36 which acts like a spring coil.
  • the intravascular part 32 having the membrane 32 is deflected in direction of arrow 38 so that the connector 36 creates a spring force to clamp the device to the vessel.
  • Two advantages of the device 30 are that no part of the device 30 extends through the lumen of the blood vessel or graft vessel and that the blood vessel and graft vessel are not penetrated or pierced to deliver or mount the device 30.
  • a tear-away member 33 such as a suture, may be used to partially or completely detach the membrane 22 or to simply segment or cut the membrane to facilitate removal.
  • the device 40 also includes an intravascular part 42 and an extravascular part 44 which contact the inner and outer walls of the blood vessel, respectively.
  • a tensioning element 46 extends through the opening in the vessel which is used to form the anastomosis.
  • the tensioning element 46 is held by the extravascular part 44 and may have a number of discrete positions provided by beads 48. Of course, any other suitable mechanism may be used to apply and maintain tension on the element 46 with or without discrete positions.
  • the intravascular part 42 as has an expandable frame 50 which opens and closes a cover 52.
  • the frame 50 is collapsed during introduction and removal in any suitable manner as is known in the art.
  • the frame may be collapsed with a ring (not shown) which is simply moved over the frame 50 to collapse the frame 50.
  • the frame 50 is expanded to seal around the opening.
  • Tension is then applied to the tensioning element 46 to form a seal around the opening.
  • the device 40 also shares the same advantages as some of the other devices described herein such as minimal disturbance and trauma to the blood vessel and graft.
  • a suture 54 may be used to tear away part or all of the cover when removing the device.
  • the device 40 is preferably removed directly through the same opening used to create the anastomosis.
  • the extravascular part 34 may be advantageously rotated relative to the intravascular part 32 to so that the device 30 or parts thereof may be moved to reduce interference with creation of the anastomosis.

Abstract

A sealing device is used to temporarily seal an opening in a body cavity or lumen such as the aorta when performing an anastomosis. The sealing device may include an intravascular component and an extravascular component which are magnetically attracted to one another. Another sealing device has a connector extending through the opening which is used to create the anastomosis. The connector may simply use tension to provide a clamping force between the intravascular and extravascular components or the connector may simply be a spring.

Description

METHODS AND DEVICES FOR TEMPORARILY SEALING A BLOOD VESSEL DURING
AN ANASTOMOSIS
This application is a continuation-in-part of U.S. Provisional Application No. 60/465, 643, filed on April 26, 2003 and is also a continuation-in-part of U.S. Provisional Application No. 60/472,556, filed on May 22, 2003 which are all hereby incorporated by reference.
BACKGROUND OF THE INVENTION
The present invention is directed to methods and devices for temporarily sealing an opening in a body cavity or lumen such as a blood vessel. In particular, the present invention is suited for sealing the opening in the aorta when forming an anastomosis for coronary bypass surgery.
Clamp-type devices are disclosed in U.S. Patent No. 5,447,515 and 6,620,177. A drawback with these clamp-type devices is that a separate incision is required for one arm of the clamp.
Other devices for temporarily sealing an opening in a blood vessel require part of the device to be advanced through the graft lumen. These devices can be problematic when using tissue grafts since the endothelium is relatively delicate and can be easily damaged which may result in an adverse tissue response.
The present invention is directed to additional methods and devices for sealing an opening in a blood vessel. SUMMARY OF THE INVENTION
The present invention is directed to methods and device for temporarily sealing a body cavity or body lumen such as the aorta. In one aspect of the present invention, a sealing device is provided which has intravascular and extravascular elements magnetically attracted to one another. One or both of the elements may have magnetic components or elements to create the magnetic attraction. The intravascular element has a flexible body which conforms to the shape of the inner wall of the blood vessel. An opening is formed in the blood vessel which is sealed by the intravascular element. The intravascular element may be delivered endovascularly with a catheter, or through a cannula or trocar near the aorta and adjacent to the anastomosis. The device may also be delivered through the same opening that is created to form the anastomosis which provides the benefits described below.
The intravascular element has a flexible body which can deform to the shape of the inner wall of the aorta and, in particular, is flexible to be deformed by magnetic forces exerted by the extravascular element in conformance with the shape of the aorta. In this manner, the extravascular element may be used to deploy and anchor the intravascular element.
In another aspect of the present invention, the intravascular and extravascular elements may be coupled together with a connector extending through the opening used to create the anastomosis. The connector may acts like a spring which clamps the device to the blood vessel. The spring may be created with a wire which acts like a coil spring or with any other suitable structure which provides a spring force. The connector may also simply be a tension element, such as a wire or filament, which is tensioned to create a clamping force between the intravascular and extravascular elements.
These and other features of the invention will become apparent from the following description of the preferred embodiments, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows an intravascular part of a device for temporarily sealing an opening in a blood vessel when creating an anastomosis.
Fig. 2 shows the intravascular component collapsed within a delivery element
Fig. 3 shows the intravascular component with elements advanced into a channel in the device.
Fig. 4 shows a cross-sectional view of the intravascular component.
Fig. 5 shows an extravascular component of the device of Fig. 1.
Fig. 6 shows the device' of Fig. 1 mounted to a blood vessel.
Fig. 7 is an isometric view of another device for temporarily sealing an opening in a blood vessel.
Fig. 8 shows a plan view of the device of Fig. 7.
Fig. 9 shows a side view of the device of Fig. 7.
Fig. 10 shows another device for temporarily sealing an opening in a blood vessel.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention is directed to devices and methods for temporarily sealing an opening in a body cavity or lumen such as a blood vessel. In particular, the present invention may be useful for temporarily sealing an opening in the aorta when creating an anastomosis during bypass surgery. It is understood that the descriptions below related to the aorta are equally applicable to use in any body lumen or cavity. Furthermore, the term graft vessel may mean any type of vessel including any biological or synthetic graft including, but not limited to, the internal mammary artery, saphenous vein, foreign tissue grafts and synthetic grafts such as PTFE grafts.
Referring to Figs. 1-5, a device 2 for temporarily sealing an opening in a blood vessel in accordance with the present invention is shown. The device 2 includes an extravascular component 4 and an intravascular component 6. The components 4, 6 are magnetically attracted to one another to provide a clamping force to temporarily secure the device 2 to the vessel or organ. Either one or both of the components 4, 6 may be magnetic. The extravascular component 6 may be split to facilitate placement and removal. The component 6 may have a number of poles as shown in Fig. 5 or may have fewer poles without departing from the invention. The intravascular component 6 may be delivered through a trocar or cannula 8 near the desired anastomosis site, through a catheter from a peripheral vessel such as the femoral artery, or through the same opening used to form the anastomosis.
Referring to Fig. 2, the intravascular component 6 has a flexible body 14 which is collapsed in a delivery element 15 such as a catheter, cannula or trocar. The component 6 may have one or more elements 10 which are magnetically attracted to the extravascular component 4. The elements 10 may be spherical although any other shape may be used.
The elements 10 may be fixed to the flexible body 14 or may be movable within a channel or lumen 12 in a flexible body 14 so that the device 2 may be more easily collapsed into a relatively small shape. For example, the flexible body 14 may be delivered first followed by advancement of the element 10 into the flexible body when it is desired to expand the intravascular component 6. Removal of the element 10 from the flexible body 14 may facilitate advancement, positioning and removal of the device. This feature may be particularly advantageous when the delivery element 15 is a catheter for endovascular delivery or when the delivery element 15 is delivered through the same opening used to form the anastomosis.
The element 10 is advanced into a channel or pocket 22 in the body. Advancement of the element 10 provides a more defined shape to the intravascular component 6. Even with the element 10 in place, however, the intravascular component 6 is still flexible enough to be deformed by magnetic forces exerted by the extravascular component 4 so that the intravascular component 6 conforms to the shape of the aorta. The element 10 may be advanced into the flexible body 14 using fluid pressure, a string 17 coupled to the elements 10 or by simply manipulating the element 10 itself. Referring to Fig. 4, the channel or lumen 12 may extend essentially radially from an outer edge of the device or may extend longitudinally from near the middle of the device when the device is introduced through the opening used to create the anastomosis as shown in Fig. 6. Thus, it can be appreciated that a number of different configurations are possible, including many not mentioned here, without departing from the scope of the invention. The flexible body 14 is made of a soft, conformable material, such as silicone, polyurethane or other suitable biocompatible material, to conform to the shape of the vessel. The flexible body 14 may include a thin membrane 20 which seals the opening in the vessel and is surrounded by the channel, lumen or pocket 22.
Use of the device is now described. The intravascular component 6 is advanced to a position adjacent the inner wall of the aorta using the delivery element 15. The component 6 may be delivered with a catheter through a peripheral vessel such as the femoral artery, through a cannula or trocar in the aorta; or directly through the opening used to form the anastomosis as shown in Fig. 6. The component 6 is initially delivered out of the delivery element 15 in a collapsed position. The element(s) 10 are then moved into the channel or lumen 22 in the body 14 to provide a generally circular shape to the component 6. The extravascular component 4 is then moved against the outer wall of the aorta so that the magnetic forces exerted on the intravascular component 6 cause the component 6 to conform to the shape of the aorta and to clamp the aorta between the components 4, 6.
Referring to Figs. 7-9, another sealing device 30 is shown. The sealing device 30 has a membrane 32 which seals against the inner wall of the blood vessel. The device 30 also includes an intravascular part 32 and an extravascular part 34 which contact the inner and outer walls of the blood vessel, respectively. A connector 36 extends between the intravascular and extravascular parts 32, 34. The connector 36 extends through the opening in the blood vessel and provides a spring force which clamps the device 30 to the blood vessel. The device 30 may include a wire 38, such as a superelastic wire, which forms a loop 37 at the intravascular part, a loop 39 at the extravascular part and length of wire which at the connector 36 which acts like a spring coil.
When the device 30 is mounted to a blood vessel, the intravascular part 32 having the membrane 32 is deflected in direction of arrow 38 so that the connector 36 creates a spring force to clamp the device to the vessel. Two advantages of the device 30 are that no part of the device 30 extends through the lumen of the blood vessel or graft vessel and that the blood vessel and graft vessel are not penetrated or pierced to deliver or mount the device 30. A tear-away member 33, such as a suture, may be used to partially or completely detach the membrane 22 or to simply segment or cut the membrane to facilitate removal.
Referring to Fig. 10, still another sealing device 40 is shown. The device 40 also includes an intravascular part 42 and an extravascular part 44 which contact the inner and outer walls of the blood vessel, respectively. A tensioning element 46 extends through the opening in the vessel which is used to form the anastomosis. The tensioning element 46 is held by the extravascular part 44 and may have a number of discrete positions provided by beads 48. Of course, any other suitable mechanism may be used to apply and maintain tension on the element 46 with or without discrete positions.
The intravascular part 42 as has an expandable frame 50 which opens and closes a cover 52. The frame 50 is collapsed during introduction and removal in any suitable manner as is known in the art. For example, the frame may be collapsed with a ring (not shown) which is simply moved over the frame 50 to collapse the frame 50. Once the intravascular part 42 has been introduced into the blood vessel, the frame 50 is expanded to seal around the opening. Tension is then applied to the tensioning element 46 to form a seal around the opening. The device 40 also shares the same advantages as some of the other devices described herein such as minimal disturbance and trauma to the blood vessel and graft. A suture 54 may be used to tear away part or all of the cover when removing the device. The device 40 is preferably removed directly through the same opening used to create the anastomosis. The extravascular part 34 may be advantageously rotated relative to the intravascular part 32 to so that the device 30 or parts thereof may be moved to reduce interference with creation of the anastomosis.
The present invention has been described in connection with the preferred embodiments but it is understood that the present invention may be practiced using other devices, structures and methods without departing from the scope of the invention.

Claims

LN THE CLAIMS:
1. A method of temporarily sealing an opening in a blood vessel while creating an anastomosis, comprising the steps of: providing a sealing device including an intravascular element and an extravascular element which are magnetically attracted to one another; positioning the intravascular element at an inner wall of a blood vessel; placing the extravascular element at an outer wall of the blood vessel, the intravascular and extravascular elements being magnetically attracted to one another to forming a seal against the inner wall of the blood vessel around the opening; forming an opening in the wall of the blood vessel; creating an anastomosis between a graft and the blood vessel at the opening in the blood vessel; and removing the sealing device.
2. The method of claim 1, wherein: the intravascular magnet is delivered through a penetration in the blood vessel adjacent to the opening.
3. The method of claim 1, wherein: the intravascular magnet is delivered and removed through the opening in the blood vessel; wherein the positioning, placing and creating steps are carried out without penetrating the blood vessel and without the sealing device extending through a lumen of the graft vessel.
4. The method of claim 1 , wherein: the providing step is carried out with the intravascular element having a flexible body, the flexible body being deformable by magnetic forces exerted by the extravascular element; and the positioning step being carried out with the intravascular element forming a shape which seals against the inner wall of the blood vessel by magnetic forces applied by the extravascular element.
5. • The method of claim 4, wherein: the providing step is carried out with the intravascular element having a plurality of elements coupled to the flexible body which are magnetically attracted to the extravascular element.
6. The method of claim 5, wherein: the providing step is carried out with the intravascular element having a flexible body and a part which is movable relative to the flexible body.
7. The method of claim 6, wherein: the providing step is carried out with the part which is movable relative to the flexible body being magnetically attracted to the extravascular element.
8. The method of claim 1, wherein: the providing step is carried out with the intravascular element having a closed loop; the placing step being carried out by compressing the closed loop and delivering the closed loop to the blood vessel.
9. A device for temporarily sealing an opening in a blood vessel while creating an anastomosis, comprising: an intravascular element which is adapted to from a seal at an interior wall of a blood vessel; an extravascular element which is magnetically attracted to the intravascular part; wherein the intravascular part has a flexible body adapted to conform to the inner wall of the blood vessel, the intravascular part being deformable by magnetic forces exerted by the extravascular element to shape the intravascular part.
10. The device of claim 9, wherein: the intravascular element has a movable part which is movable relative to the flexible body, the movable part being advanced between a first position and a second position, the first position being a delivery position and the second position being a working position which increases the stiffness of the flexible body.
11. The device of claim 10, wherein: the movable part is magnetically attracted to the extravascular element.
12. The device of claim 9, wherein: the intravascular element and extravascular magnet are delivered without piercing the blood vessel.
13. A method of temporarily sealing an opening in a blood vessel while creating an anastomosis, comprising the steps of: providing a sealing device having an intravascular part, an extravascular part and a connector extending between the intravascular part and the extravascular part; forming an opening in a blood vessel; positioning the intravascular part against the inner wall of the blood vessel so that the intravascular part seals against the inner wall of the blood vessel, the connector extending through the opening in the blood vessel and the extravascular part contacting the outer surface of the blood vessel, the intravascular and extravascular parts compressing the blood vessel thereby anchoring the sealing device; creating an anastomosis between a graft and the blood vessel at the opening in the blood vessel; and removing the sealing device.
14. The method of claim 13, wherein: the positioning step is carried out without penetrating the blood vessel at any other location other than the opening and without extending any device through a lumen of the graft vessel.
15. The method of claim 13, wherein: the providing step is carried out with the sealing device including a wire which forms a first loop along the intravascular part and a second loop along the extravascular part.
16. The method of claim 13, wherein: the positioning step is carried out with the connector being tensioned to provide a clamping force between the intravascular and extravascular parts.
17. A device for temporarily sealing an opening in a blood vessel while creating an anastomosis, comprising: an intravascular part adapted to seal against an inner wall of a blood vessel; an extravascular part adapted to contact an exterior surface of the blood vessel; and a connector extending between the intravascular part and the extravascular part, the connector positioned and adapted to extend through the opening in the blood vessel which is formed to create the anastomosis, wherein the intravascular part, the extravascular part and the connector create a clamping force which clamps the blood vessel between the intravascular part and the extravascular parts.
18. The device of claim 17, wherein: the intravascular part, the extravascular part and the connector are adapted to seal the opening in the blood vessel without piercing the blood vessel.
19. The device of claim 17, wherein: the sealing device includes a wire which forms a first loop at the intravascular part, a second loop at the extravascular part and a portion of the wire extending between the intravascular and extravascular parts.
20. The device of claim 17, wherein: the connector is tensioned to create a clamping force with the intravascular part and the extravascular part.
21. The device of claim 17, wherein: the extravascular part is rotatable relative to the intravascular part when the device is mounted to the blood vessel.
PCT/US2004/012843 2003-04-26 2004-04-26 Methods and devices for temporarily sealing a blood vessel during an anastomosis WO2004096013A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US46564303P 2003-04-26 2003-04-26
US60/465,643 2003-04-26
US47255603P 2003-05-22 2003-05-22
US60/472,556 2003-05-22

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WO2004096013A2 true WO2004096013A2 (en) 2004-11-11
WO2004096013A3 WO2004096013A3 (en) 2007-03-29

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US10758223B2 (en) 2005-06-20 2020-09-01 Scarab Technology Services, Llc Method and apparatus for applying a knot to a suture
US11197661B2 (en) 2007-03-29 2021-12-14 Scarab Technology Services, Llc Device for applying a knot to a suture
US10182802B2 (en) 2007-03-29 2019-01-22 Nobles Medical Technologies, Inc. Suturing devices and methods for closing a patent foramen ovale
US10285687B2 (en) 2008-05-09 2019-05-14 Nobles Medical Technologies Inc. Suturing devices and methods for suturing an anatomic valve
US11166712B2 (en) 2008-05-09 2021-11-09 Scarab Technology Services, Llc Suturing devices and methods for suturing an anatomic valve
US10624629B2 (en) 2011-04-15 2020-04-21 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic valve
US10610216B2 (en) 2011-04-15 2020-04-07 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic valve
US11344308B2 (en) 2011-07-12 2022-05-31 Ircad Modular magnetic devices for use in creating tissue anastomosis
CN107468300A (en) * 2011-07-12 2017-12-15 消化道肿瘤治疗研究中心 Modularization magnetic stapling apparatus
US11051802B2 (en) 2012-05-11 2021-07-06 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic structure
US10420545B2 (en) 2012-05-11 2019-09-24 Heartstitch, Inc. Suturing devices and methods for suturing an anatomic structure
US10512458B2 (en) 2013-12-06 2019-12-24 Med-Venture Investments, Llc Suturing methods and apparatuses
US11779324B2 (en) 2013-12-06 2023-10-10 Med-Venture Investments, Llc Suturing methods and apparatuses
US10178993B2 (en) 2014-07-11 2019-01-15 Cardio Medical Solutions, Inc. Device and method for assisting end-to-side anastomosis
WO2016007917A3 (en) * 2014-07-11 2016-03-10 Cardio Medical Solutions, Inc. Device and method for assisting end-to-side anastomosis
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US10687801B2 (en) 2016-04-11 2020-06-23 Nobles Medical Technologies Ii, Inc. Suture spools for tissue suturing device
US11839370B2 (en) 2017-06-19 2023-12-12 Heartstitch, Inc. Suturing devices and methods for suturing an opening in the apex of the heart
US11202624B2 (en) 2017-08-18 2021-12-21 Nobles Medical Technologies Ii, Inc. Apparatus for applying a knot to a suture

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