CA2431652A1 - Open channel stent - Google Patents

Open channel stent Download PDF

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Publication number
CA2431652A1
CA2431652A1 CA002431652A CA2431652A CA2431652A1 CA 2431652 A1 CA2431652 A1 CA 2431652A1 CA 002431652 A CA002431652 A CA 002431652A CA 2431652 A CA2431652 A CA 2431652A CA 2431652 A1 CA2431652 A1 CA 2431652A1
Authority
CA
Canada
Prior art keywords
elongate
cages
flexible
ureteral
flexible members
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002431652A
Other languages
French (fr)
Other versions
CA2431652C (en
Inventor
Michael Edward Mitchell
Gloria Ro Kolb
Aoy Tomita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FOSSA INDUSTRIES Inc
Original Assignee
Fossa Industries, Inc.
Michael Edward Mitchell
Gloria Ro Kolb
Aoy Tomita
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 Fossa Industries, Inc., Michael Edward Mitchell, Gloria Ro Kolb, Aoy Tomita filed Critical Fossa Industries, Inc.
Publication of CA2431652A1 publication Critical patent/CA2431652A1/en
Application granted granted Critical
Publication of CA2431652C publication Critical patent/CA2431652C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/94—Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
    • 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
    • A61F2/07—Stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
    • A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
    • A61M27/008—Implant devices for drainage of body fluids from one part of the body to another pre-shaped, for use in the urethral or ureteral tract
    • 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
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
    • 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
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0039—H-shaped
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/005—Rosette-shaped, e.g. star-shaped
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0058—X-shaped
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0071—Three-dimensional shapes spherical
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0073—Quadric-shaped
    • A61F2230/0076—Quadric-shaped ellipsoidal or ovoid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/10—Trunk
    • A61M2210/1078—Urinary tract
    • A61M2210/1089—Urethra
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies
    • A61M29/02—Dilators made of swellable material

Abstract

A ureteral device is provided for facilitating stone passage through a ureter or duct. An exemplary ureteral device includes a flexible, elongate body that defines a plurality of cages along the body. In a contracted state the cages have a reduced diameter. When an activation force is applied, the cages transform to an expanded state, thereby defining a plurality of void spaces.
The void spaces are configured to receive an obstruction, such as a stone. The ureteral device can then be induced to the contracted state to compress the obstruction within the elongate, flexible body and then be removed from the obstructed passage. The ureteral device can be configured to have different numbers of elongate flexible members that define the cages.

Claims (18)

1. A ureteral device comprising:
a flexible elongate body having a first end and a second end, the flexible elongate body defining a plurality of cages between the first end and the second end.
2. The ureteral device of claim 1, wherein the cages are reversibly, radially expandable.
3. The ureteral device of claim 1, wherein the cages are defined by a plurality of elongate flexible members.
4. The ureteral device of claim 3, wherein the cages are transitionable from a contracted to an expanded state, and wherein the contracted state provides a first cage diameter and the expanded state provides a second cage diameter.
5. The ureteral device of claim 3, wherein the flexible elongate body includes a flexible tube having a body wall with an outer surface and an inner surface that defines a lumen, and wherein the plurality of elongate flexible members are defined by portions of the body wall.
6. The ureteral device of claim 5, wherein the elongate flexible members touch adjacent elongate flexible members when the plurality of cages are in a contracted state.
7. The ureteral device of claim 6, wherein the elongate flexible members are separated from each other when the plurality of cages are in an expanded state.
8. The ureteral device of claim 5, wherein the elongate flexible members are disposed in a spaced-apart relationship when the plurality of cages are in a contracted state.
9. The ureteral device of claim 3, wherein the elongate flexible members are longitudinally aligned with a longitudinal axis of the flexible elongate body.
10. The ureteral device of claim 3, wherein the elongate flexible members are not longitudinally aligned with a longitudinal axis of the flexible elongate body.
11. The ureteral device of claim 1, wherein the elongate flexible body provides an undulating surface and alternating larger and smaller localized circumferential regions.
12. A ureteral device comprising:
a flexible elongate body having a first end and a second end, the flexible elongate body defining a plurality of cages between the first end and the second end, wherein the cages are defined by a plurality of elongate flexible members, and wherein the cages are reversibly, radially expandable.
13. A method of removing a ureteral obstruction, comprising the steps of:
(a) providing a device having a flexible elongate body having a first end and a second end, the flexible elongate body defining a plurality of cages between the first end and the second end;
(b) guiding the device in a retrograde manner through a ureter;
(c) expanding the device to allow an obstruction to lodge therein; and (d) removing the device from the ureter.
14. A method of dilating a duct, comprising the steps of:
(a) providing a device having a flexible elongate body having a first end and a second end, the flexible elongate body defining a plurality of cages between the first end and the second end;
(b) guiding the device in a retrograde manner through a ureter; and (c) expanding the device.
15. A method of making a ureteral device, comprising the steps of:
(a) providing an elongate flexible body with a body wall which defines a central lumen; and (b) creating a plurality of apertures in the body wall such that the apertures completely penetrate a cross-section of the body wall; and (c) creating the apertures such that elongate flexible members are defined by the apertures in the body wall.
16. The method of claim 15, further comprising removing portions of the body wall adjacent to the apertures.
17. The method of claim 15, wherein the apertures are radially spaced on the body wall.
18. The method of claim 15, further comprising the steps of:
(d) expanding the elongate flexible members to an expanded state; and (e) heating the ureteral device to a temperature sufficient to induce a shape memory of the expanded state.
CA2431652A 2001-01-05 2001-08-02 Open channel stent Expired - Fee Related CA2431652C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/755,487 2001-01-05
US09/755,487 US6709465B2 (en) 1999-03-18 2001-01-05 Radially expanding ureteral device
PCT/US2001/024409 WO2002053065A1 (en) 2001-01-05 2001-08-02 Radially expanding ureteral device

Publications (2)

Publication Number Publication Date
CA2431652A1 true CA2431652A1 (en) 2002-07-11
CA2431652C CA2431652C (en) 2010-03-23

Family

ID=25039359

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2431652A Expired - Fee Related CA2431652C (en) 2001-01-05 2001-08-02 Open channel stent

Country Status (6)

Country Link
US (3) US6709465B2 (en)
EP (1) EP1347716B1 (en)
AT (1) ATE393605T1 (en)
CA (1) CA2431652C (en)
DE (1) DE60133834T2 (en)
WO (1) WO2002053065A1 (en)

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