CA2471520A1 - Flexible stent and method of making the same - Google Patents

Flexible stent and method of making the same Download PDF

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Publication number
CA2471520A1
CA2471520A1 CA002471520A CA2471520A CA2471520A1 CA 2471520 A1 CA2471520 A1 CA 2471520A1 CA 002471520 A CA002471520 A CA 002471520A CA 2471520 A CA2471520 A CA 2471520A CA 2471520 A1 CA2471520 A1 CA 2471520A1
Authority
CA
Canada
Prior art keywords
ring
stent
connector
implantable prosthesis
section
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
CA002471520A
Other languages
French (fr)
Other versions
CA2471520C (en
Inventor
Ken A. Holloway
Christofer T. Christoforou
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.)
Thoratec LLC
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2471520A1 publication Critical patent/CA2471520A1/en
Application granted granted Critical
Publication of CA2471520C publication Critical patent/CA2471520C/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
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • 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
    • 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
    • A61F2002/828—Means for connecting a plurality of stents allowing flexibility of the whole structure
    • 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
    • A61F2210/0076—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/005—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
    • 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
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0058—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
    • 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
    • A61F2230/0054—V-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
    • A61F2230/0073—Quadric-shaped
    • A61F2230/0078—Quadric-shaped hyperboloidal
    • 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
    • A61F2230/008—Quadric-shaped paraboloidal
    • 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 (10) that can be made of self-expandable members (14) and balloon expandable members (16) is described. The members can be held together by a polymer layer, polymer rings or discreet polymer connectors (13, 48, 58, 68).
Methods of making and using the stent are also described.

Claims (26)

1. A stent, comprising a first member having a proximal section, a second member having a distal section, and a connector joining the proximal section of the first member to the distal section of the second member, the connector being made from a material comprising a polymer, wherein the connector flexibly joins the first member to the second member, and wherein the first member is self-expandable and the second member is capable of expanding with the application of an external force.
2. The stent of Claim 1, wherein the first member and the second member comprise a diamond shape and are positioned next to each other along a longitudinal axis of the stent.
3. The stent of Claim 1, wherein the first member and the second member comprise zig-zag-shaped annular bands.
4. The stent of Claim 1, wherein the connector comprises a ring-shaped structure, the ring-shaped structure connected to the proximal section of the first member at a first end of the ring-shaped structure and to the distal section of the second member at a second end of the ring-shaped structure.
5. The stent of Claim 1, wherein the first member comprises a set of diamond-shaped struts connected to form a generally cylindrical structure, the proximal section of the first member defined by at least one corner of at least one of the diamond-shaped struts;
and the second member comprises a set of diamond shaped struts connected to form a generally cylindrical structure, the distal section of the second member being defined by at least one corner of at least one of the diamond-shaped struts.
6. The stent of Claim 5, wherein the connector is defined by a ring-shaped structure, the ring-shaped structure connected to the at least one corner of the first member at a first end of the ring-shaped structure and to the at least one corner of the second member at a second end of the ring-shaped structure.
7. The stent of Claim 5, wherein the connector is defined by a plurality of joint elements such that a corner of the first member is connected to an adjacent corner of the second member by one of the joint elements.
8. The stent of Claim 7, wherein the joint elements have a generally box-shaped structure.
9. An implantable prosthesis, comprising a polymeric layer containing a first ring member and a second ring member, the first ring member positioned at a distance away from the second ring member, wherein the first ring member is self expandable and the second ring member expands with the application of an external force.
10. The implantable prosthesis of Claim 9, wherein the first ring member is positioned at a first end of the implantable prosthesis and the second ring member is positioned between the first end and a second end of the implantable prosthesis.
11. The implantable prosthesis of Claim 10, additionally comprising a self expandable third ring member, wherein the third ring member is positioned at the second end of the implantable prosthesis.
12. The implantable prosthesis of Claim 9, wherein the polymeric layer has a void-to-volume ratio of less than about 5%.
13. The implantable prosthesis of Claim 9, additionally comprising a luminal layer disposed on the inner surface of the polymeric layer, the luminal layer having a void-to-volume ratio of about 40% to about 90%.
14. The implantable prosthesis of Claim 9, additionally comprising an outer layer disposed on the outer surface of the polymeric layer, the outer layer having a void-to-volume ratio of about 40% to about 90%.
15. The implantable prosthesis of Claim 9, wherein the polymeric layer comprises a first sub-layer and a second sub-layer attached to the first sub-layer, wherein the first and second ring members are between the first and second sub-layers.
16. The implantable prosthesis of Claim 9, wherein the second ring member is positioned at an end of the implantable prosthesis and the first ring member is positioned about a middle of the implantable prosthesis.
17. The implantable prosthesis of Claim 9, wherein the first and second ring members comprise zig-zag-shaped annular bands.
18. The implantable prosthesis of Claim 9, wherein the first and second ring members comprise diamond-shaped struts.
19. A stent comprising:
a first wire strut having a shape defined by a first bend section and a second bend section;
a first connector connected to the first bend section of the first wire strut;
and a second connector connected to the second bend section of the first wire strut wherein a section of the first wire strut between the first bend section and second bend section is naked of the first connector and the second connector.
20. The stent of Claim 19, wherein the first connector has a ring structure such that a first side of the ring structure is connected to the first bend section of the first wire strut.
21. The stent of Claim 19, further comprising a second wire strut having a first bend section connected to the first connector.
22. The stent of Claim 21, wherein the first connector has a ring structure such that a first side of the ring structure is connected to the first bend section of the first wire strut and an opposite side of the ring structure is connected to the first bend section of the second wire strut.
23. The stent of Claim 21, wherein the first wire strut is self expandable and the second strut is capable of expanding with the application of an external force.
24. A method of manufacturing a stent, comprising:
forming a band made from a material comprising a polymer on a mandrel;
positioning an end of a first member on a first end of the band;
positioning an end of a second member on a second end of the band;
increasing the thickness of the band to encapsulate the end of the first member and the end of the second member to flexibly connect the first member to the second member.
25. The method of Claim 24, wherein the first member has a expandable tubular body and the second member has a tubular body that is capable of expanding with the application of an external force.
26
CA2471520A 2002-03-26 2003-03-18 Flexible stent and method of making the same Expired - Fee Related CA2471520C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/108,778 US7288111B1 (en) 2002-03-26 2002-03-26 Flexible stent and method of making the same
US10/108,778 2002-03-26
PCT/US2003/008431 WO2003082152A1 (en) 2002-03-26 2003-03-18 Flexible stent and method of making the same

Publications (2)

Publication Number Publication Date
CA2471520A1 true CA2471520A1 (en) 2003-10-09
CA2471520C CA2471520C (en) 2010-11-30

Family

ID=28673606

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2471520A Expired - Fee Related CA2471520C (en) 2002-03-26 2003-03-18 Flexible stent and method of making the same

Country Status (9)

Country Link
US (2) US7288111B1 (en)
EP (2) EP1955673B1 (en)
JP (1) JP4575669B2 (en)
AT (2) ATE488196T1 (en)
AU (1) AU2003225870B2 (en)
CA (1) CA2471520C (en)
DE (2) DE60334977D1 (en)
ES (2) ES2353146T3 (en)
WO (1) WO2003082152A1 (en)

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ATE488196T1 (en) 2010-12-15
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AU2003225870B2 (en) 2008-06-26
US7288111B1 (en) 2007-10-30
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