CA2649381C - Balloon expandable stent with a self-expanding portion - Google Patents

Balloon expandable stent with a self-expanding portion Download PDF

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Publication number
CA2649381C
CA2649381C CA2649381A CA2649381A CA2649381C CA 2649381 C CA2649381 C CA 2649381C CA 2649381 A CA2649381 A CA 2649381A CA 2649381 A CA2649381 A CA 2649381A CA 2649381 C CA2649381 C CA 2649381C
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Canada
Prior art keywords
stent
self
expanding
balloon
delivery assembly
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Expired - Fee Related
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CA2649381A
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French (fr)
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CA2649381A1 (en
Inventor
Anthony C. Vrba
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Boston Scientific Ltd Barbados
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Boston Scientific Ltd Barbados
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Expired - Fee Related legal-status Critical Current

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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
    • A61F2/86—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
    • A61F2/915—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 with bands having a meander structure, adjacent bands being connected to each other
    • 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
    • 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
    • A61F2/02—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
    • A61F2/82—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
    • A61F2/82—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
    • A61F2/915—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 with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/91525—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 with bands having a meander structure, adjacent bands being connected to each other within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
    • 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
    • A61F2/915—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 with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/91533—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 with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
    • 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
    • A61F2/915—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 with bands having a meander structure, adjacent bands being connected to each other
    • A61F2002/9155—Adjacent bands being connected to each other
    • A61F2002/91558—Adjacent bands being connected to each other connected peak to peak
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0048—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability

Abstract

A stent consisting of at least two parts in juxtaposition, one part being of self-expandable characteristics while the other part is balloon expandable.

Description

BALLOON EXPANDABLE STENT WITH A SELF-EXPANDING PORTION
This is a divisional of Canadian Patent Application No. 2,326,882 filed May 26, 1999.
Field of the Invention The present invention relates to a new type of stent for transluminal implantation and in particular new vascular stents.

Background of the Invention Stents for transluminal implantation are well known. They are generally comprised of metallic supports which are inserted into a part of the human body such as bile ducts, the urinary system, the digestive tube and notably by percutaneous route inside the blood vessels, usually the arteries in which case they are typically termed vascular stents. Stents are usually generally cylindrical and are constructed and arranged to expand radially once in position within the body. They are usually inserted while they have a first relatively small diameter and implanted in a desired area, for example inside a vessel, then the stent is expanded in situ until it reaches a second diameter larger than the first diameter. A balloon associated with the catheter is usually used to provide the necessary interior radial force to the stent to cause it to expand radially.
Self-expanding stents are also known which can expand from a first diameter to a larger second diameter without the use of a means for applying an interior radial force, such as a balloon, to them. One such type of self-expanding stent is a stent made of a shape memory metal which expands to its second larger diameter upon exposure to body temperature. Such stents are also known.
US 5,366,504 discloses a tubular prosthesis including a tubular wall portion of loosely interlocked pattern (e.g. of knitted loops) to function within a body lumen. The prosthesis may be made with self-expanding anchoring ends and a balloon expandable wall portion.
US 5,741,325 discloses a self-expanding intraluminal composite prosthesis. The prosthesis may optionally be bifurcated.
Summary of the Invention The present invention proposes a novel type of stent which combines a self-expanding part or portion with a part or portion which requires an interior radial force for expansion. More specifically, a stent for transluminal implantation according to the present invention will comprise cylindrical parts preferably in juxtaposition, with at least one part being self-expanding whereas another part requires an interior radial force for its expansion, such as a balloon catheter or the like. Basically, the stent will consist of at least two of the aforementioned parts but may consist of more than two parts. Such an arrangement enables improved placement of the stent by providing immediate expansion in part upon release of the stent from its delivery catheter.
The one part which is capable of radially self-expanding and the other part comprise a plurality of serpentine bands. The parts are connected one to the other via connections extending between the bands.

Brief Description of the Figures Figure 1 is a showing of one embodiment of a stent according to this invention;
Figure 2 is a schematic showing of a stent similar to that of Figure 1 on a delivery catheter;
Figure 3 is a schematic showing of the delivery system of Figure 2 with the stent released for implantation;
Figures 4 and 5 are schematic showings of a stent of the invention used in a vessel branching situation; and Figure 6 is a showing of another embodiment of a stent according to the invention, and Figures 7-10 are schematic showings of bifurcated stents making use of the invention.

Detailed Description of the Preferred Embodiments Figure 1 shows a stent 10 which combines self-expanding characteristics and balloon expandable characteristics, i.e., requires expansion by use of a radial interior force. Preferably, the stent will have the self-expanding part 12 joined at one end in juxtaposition to the proximal end of a balloon expandable stent 14. The parts of the stent may be formed in accordance with any of the known stents extant in the prior art including stents formed of a plurality of undulating bands interconnected by members extending between adjacent bands. Self-expanding part 12 of stent 10 consists of an undulating band 13 and balloon expandable stent 14 is formed of a plurality of undulating bands 15 interconnected by connecting members 17. Self-expanding part 12 is joined to balloon expandable part 14 by interconnecting members 19.
Preferably however, the self-expanding part 12 will be of a shape memory metal such as nitinol so as to enable self-expansion at body temperature upon release of the stent from its delivery catheter (not shown). The immediate expansion of part 12 aids in placement of the stent during release, following which a balloon or the like may be used to expand part 14.
Part 12 may be of a larger diameter, or it may be flared to provide the earliest possible contact with the body portion into which it is inserted, such as a vessel.
This is best seen for example in Figures 2 and 3 which show a stent 10 similar to that of Figure 1 on a delivery catheter. Figure 2 shows the stent having the two parts 12 and 14, respectively. Part 12 is the self-expanding part while part 14 requires a separate force for expansion such as a balloon 16 of a delivery catheter generally indicated at 18 inside the stent. In Figure 2, the stent is shown prior to release or deployment, the self-expanding part is enclosed by a retractable sheath 20. In Figure 3, the sheath has been retracted, allowing self-expanding part 12 to flare-outwardly. Subsequently, balloon 16 may be used in the known manner to expand part 14.
Since most stent delivery catheters include a retractable sheath which exposes the stent for implantation and removal from the catheter, if the self-expanding part 12 is placed on the proximal end of the stent as shown, it will most likely be able to lock the stent in place until the remainder of the stent is expanded as by balloon expansion. This placement is preferable although placement in other parts of the stent proper may also be used.
When the self-expanding portion is placed at the proximal end of the stent, such a stent is particularly useful in vessel stenting in which the vessel is of the bifurcating or branching type. Such a stent is shown schematically in figures 4 and 5 at 10. Figure 4 shows the stent having a proximal end part 12 which is self-expanding while the remainder of the stent body 14 is balloon expandable by balloon 16 on catheter 18. In Figure 4, the retractable sheath has been removed allowing the self-expanding part to expand at the ostium 22 in a vessel 24 branching off of a main vessel such as aorta 26, helping to more accurately place the stent. Figure 5 shows the stent after expansion of part 14 by the balloon catheter and catheter retraction. A
stent according to the present invention allows positive placement of the stent near the ostium of the bifurcation.
Stents according to the invention may also be comprised of more than one self-expanding and one balloon expandable part. Any combination of these parts is deemed to be within the scope of this invention. For example, referring to Figure 6, a stent 110 is shown having a self-expanding part 112 at each end of a balloon expandable part 114. Self-expanding part 112 of stent 110 consists of an undulating band 113 and balloon expandable stent 114 is formed of a plurality of undulating bands 115 interconnected by connecting members 117. Self-expanding part 112 is joined to balloon expandable part 114 by interconnecting members 119.
Referring now to Figures 7-10, bifurcated stents making use of the invention are described. Generally, bifurcated stents consist of three segments or components, a main trunk and two branches. In making use of this invention, any of the three components may be made to be balloon expandable or self-expandable, as desired.
For example, Figure 7 shows an unexpanded bifurcated stent 10 of one configuration in schematic form having a trunk 30, a first branch 32 and a second branch 34. As shown, trunk 30 is self-expanding, such as part 12 in the earlier Figures, and branches 32 and 34 are balloon expandable, such as part 14 in the earlier Figures.
Figure 8 shows the stent of Figure 7 in an implanted position in a branching vessel 36.
Figure 9 shows another example of an unexpanded bifurcated stent 10 of another configuration in schematic form consisting of trunk 30 and branches 32 and 34.
In this case, trunk 30 and branch 23 are both self-expanding and branch 34 is balloon expandable.
Figure 10 shows the stent of Figure 9 expanded in an implanted position in a branching vessel 36.
Trunk 30 in another embodiment may be balloon expandable while the branches 32 and 34 may be self-expandable.
The above Examples and disclosure are intended to be illustrative and not exhaustive. These examples and 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 attached claims. 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 attached hereto.

Claims (15)

What is claimed is as follows:
1. A stent delivery assembly comprising a catheter, a balloon located at the distal end of the catheter, a stent disposed about the balloon, wherein at least one end of the stent extends beyond the length of the balloon, the stent having at least one end portion that is self-expanding.
2. The stent delivery assembly of claim 1, wherein the stent has a middle portion that is balloon expandable.
3. The stent delivery assembly of claim 1, wherein the self-expanding portion of the stent is covered by a sheath.
4. The stent delivery assembly of claim 1, comprising a self-expanding end portion made of nitinol.
5. The stent delivery assembly comprising:
a catheter with a balloon located at the distal end thereof;
a stent disposed about the balloon;
wherein one of the ends of the stent is covered by a sheath and a middle portion of the stent is not covered by a sheath, the stent having end portions that are self-expanding..
6. The stent delivery assembly of claim 5, wherein the middle portion of the stent is balloon expandable.
7. The stent delivery assembly of claim 5, wherein nitinol is used to form a self-expanding end portion.
8. The stent delivery assembly of claim 5, wherein the stent is longer than the balloon.
9. A stent delivery assembly comprising:
a catheter with a balloon located at a distal end thereof;
a stent disposed about the balloon, the stent having at least one end portion that is self-expanding;
a sheath extending only over the self-expanding portion of the stent.
10. The stent delivery system of claim 9, wherein at least one portion of the stent is balloon expandable.
11. The stent delivery assembly of claim 10, wherein the balloone expandable portion of the stent is a middle portion of the stent.
12. The stent delivery assembly of claim 10, wherein the at least one self-expanding portion has a larger diameter that the rest of the stent.
13. The stent delivery assembly of claim 9, wherein the stent has a plurality of end portions which are self-expanding.
14. The stent delivery assembly of claim 9, wherein nitinol is used to form the self-expanding portion.
15. The stent delivery assembly of claim 9, wherein the stent is longer than the balloon.
CA2649381A 1998-05-29 1999-05-26 Balloon expandable stent with a self-expanding portion Expired - Fee Related CA2649381C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/087,526 1998-05-29
US09/087,526 US6168621B1 (en) 1998-05-29 1998-05-29 Balloon expandable stent with a self-expanding portion
CA002326882A CA2326882C (en) 1998-05-29 1999-05-26 Balloon expandable stent with a self-expanding portion

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002326882A Division CA2326882C (en) 1998-05-29 1999-05-26 Balloon expandable stent with a self-expanding portion

Publications (2)

Publication Number Publication Date
CA2649381A1 CA2649381A1 (en) 1999-12-02
CA2649381C true CA2649381C (en) 2011-05-10

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CA2649381A Expired - Fee Related CA2649381C (en) 1998-05-29 1999-05-26 Balloon expandable stent with a self-expanding portion
CA002326882A Expired - Fee Related CA2326882C (en) 1998-05-29 1999-05-26 Balloon expandable stent with a self-expanding portion

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CA002326882A Expired - Fee Related CA2326882C (en) 1998-05-29 1999-05-26 Balloon expandable stent with a self-expanding portion

Country Status (7)

Country Link
US (1) US6168621B1 (en)
EP (1) EP1079768B1 (en)
JP (1) JP4307725B2 (en)
AT (1) ATE278365T1 (en)
CA (2) CA2649381C (en)
DE (1) DE69920905T2 (en)
WO (1) WO1999060953A1 (en)

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US6325826B1 (en) * 1998-01-14 2001-12-04 Advanced Stent Technologies, Inc. Extendible stent apparatus
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US7341598B2 (en) 1999-01-13 2008-03-11 Boston Scientific Scimed, Inc. Stent with protruding branch portion for bifurcated vessels
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US6740113B2 (en) * 1998-05-29 2004-05-25 Scimed Life Systems, Inc. Balloon expandable stent with a self-expanding portion
US6368345B1 (en) * 1998-09-30 2002-04-09 Edwards Lifesciences Corporation Methods and apparatus for intraluminal placement of a bifurcated intraluminal garafat
US8257425B2 (en) * 1999-01-13 2012-09-04 Boston Scientific Scimed, Inc. Stent with protruding branch portion for bifurcated vessels
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