CA2398774A1 - Stent holding member and stent delivery system - Google Patents

Stent holding member and stent delivery system Download PDF

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Publication number
CA2398774A1
CA2398774A1 CA002398774A CA2398774A CA2398774A1 CA 2398774 A1 CA2398774 A1 CA 2398774A1 CA 002398774 A CA002398774 A CA 002398774A CA 2398774 A CA2398774 A CA 2398774A CA 2398774 A1 CA2398774 A1 CA 2398774A1
Authority
CA
Canada
Prior art keywords
stent
holder
holding member
delivery system
groove
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
CA002398774A
Other languages
French (fr)
Other versions
CA2398774C (en
Inventor
Keiji Igaki
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.)
Kyoto Iryo Sekkei KK
Original Assignee
Kabushikikaisha Igaki Iryo Sekkei
Keiji Igaki
Kabushiki Kaisha Kyoto Iryo Sekkei
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 Kabushikikaisha Igaki Iryo Sekkei, Keiji Igaki, Kabushiki Kaisha Kyoto Iryo Sekkei filed Critical Kabushikikaisha Igaki Iryo Sekkei
Publication of CA2398774A1 publication Critical patent/CA2398774A1/en
Application granted granted Critical
Publication of CA2398774C publication Critical patent/CA2398774C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/958—Inflatable balloons for placing stents or stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/958—Inflatable balloons for placing stents or stent-grafts
    • A61F2002/9583—Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1086—Balloon catheters with special features or adapted for special applications having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves

Abstract

A stent holding member which is used in a stent feeding system for transferring a stent to be embedded in a living body to a desired holding position in a vas, the stent holding member having a cylindrical holder form ed of elastic material. The holder is provided with a groove for holding a wire or wires of which the stent of cylindrical construction is constituted, the wire being inserted in the groove to hold the stent. The groove for holding the wire of the stent of cylindrical construction will have its open-end sid e expanded by radial expansion of the holder. The expansion of the open-end si de of the groove causes the stent held in the groove to be diametrically expand ed and released from the holder.

Claims (25)

1. A stent holding member used in a stent delivery system adapted to introduce a scent of a cylindrical configuration, designed to be implanted in a living body, to a desired site of implantation in a vessel thereof, comprising:
a tubular holding member formed of an elastic material;
said holder having a groove in its outer peripheral portion for holding one or more supporting struts making up said stent, each of said struts being embedded at least partially in said groove to hold the stent.
2. The stent holding member according to claim 1 wherein said groove has its opening end side expanded by expansion of said holder along the radial direction.
3. The stent holding member according to claim 1 wherein said stent is held on an outer peripheral portion of said holder by embedding said struts in said groove.
4. The stent holding member according to claim 1 wherein said holder is formed of one or more selected from the group consisting of elastic synthetic resins, natural resins and silicone resins.
5. The stent holding member according to claim 1 wherein said holder is formed of silicone resins exhibiting tackiness.
6. The stent holding member according to claim 1 wherein said holder is formed by layering two or more tubular members having different values of modulus of elasticity.
7. The stent holding member according to claim 6 wherein the outer tubular member of said holder is formed of a silicone resin.
8. The stent holding member according to claim 1 wherein said stent is a self expandable stent contracted under an external pressure and dilated on releasing said external pressure.
9. The stent holding member according to claim 1 wherein said stent is of a balloon expandable type.
10. The stent holding member according to claim 1 wherein the strut constituting said stent is a fiber of a biodegradable polymer and wherein said fiber is formed as a tubular member.
11. The stent holding member according to claim 1 wherein an anti-thrombotic agent is deposited on the surface of said holder.
12. The stent holding member according to claim 1 wherein said stent is retained by said holder and can be mounted on an optional balloon catheter.
13. A stent delivery system adapted to introduce a stent of a cylindrical configuration designed to be implanted in a living body, to a desired site of implantation in a vessel thereof, comprising:
a catheter inserted into a vessel of a living body;
a balloon provided to the distal end of saids catheter and expamded by a fluid supplied into the inside of said catheter; and a stent holding member provided to said catheter for covering said balloon;
said holder having a groove in its outer peripheral portion for holding one or more supporting struts making up said stent, each of said struts being embedded at least partially in said groove to hold the stent.
14. The stent delivery system according to claim 13 wherein said stent retained by said stent holding member is released from said stent holding member and dilated by expansion of said holder along the radial direction brought about by expansion of said balloon.
15. The stent delivery system according to claim 14 wherein said groove provided in said holder has its open end expanded by expansion of said holder along the radial direction.
16. The stent delivery system according to claim 13 wherein said stent is a self expandable stent contracted under an external pressure and dilated on releasing the external pressure.
17. The stent delivery system according to claim 13 wherein said stent is of a balloon expandable type.
18. The stent delivery system according to claim 13 wherein said stent is held by the outer periphery of said holder by embedding said struts in said groove.
19. The stent delivery system according to claim 13 wherein said holder is formed of one or more selected from the group consisting of elastic synthetic resins, natural resins and silicone resins.
20. The stent delivery system according to claim 13 wherein said holder is formed of a silicone resin exhibiting tackiness.
21. The scent delivery system according to claim 14 wherein said holder is formed by layering two or more tubular members having different values of modulus of elasticity.
22. The stent delivery system according to claim 21 wherein the outer tubular member of said holder is formed of a silicone resin.
23. The stent delivery system according to claim 13 wherein the strut constituting said stent is a fiber of a biodegradable polymer and wherein said fiber is formed as a tubular member.
24. The stent delivery system according to claim 13 wherein said stent holding member is mounted to said catheter, covering said baloon by having both ends bonded to said catheter.
25. The stent delivery system according to claim 13 wherein an anti-thrombotic agent is deposited on the surface of said holder.
CA002398774A 2001-02-27 2001-04-27 Stent holding member and stent delivery system Expired - Fee Related CA2398774C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001-52716 2001-02-27
JP2001052716 2001-02-27
PCT/JP2001/003742 WO2002068037A1 (en) 2001-02-27 2001-04-27 Stent holding member and stent feeding system

Publications (2)

Publication Number Publication Date
CA2398774A1 true CA2398774A1 (en) 2002-09-06
CA2398774C CA2398774C (en) 2009-11-10

Family

ID=18913307

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002398774A Expired - Fee Related CA2398774C (en) 2001-02-27 2001-04-27 Stent holding member and stent delivery system

Country Status (10)

Country Link
US (1) US8262687B2 (en)
EP (1) EP1382367B1 (en)
JP (1) JP4863424B2 (en)
KR (1) KR20020092933A (en)
AT (1) ATE376818T1 (en)
AU (1) AU2001252659B2 (en)
CA (1) CA2398774C (en)
DE (1) DE60131196T2 (en)
ES (1) ES2295153T3 (en)
WO (1) WO2002068037A1 (en)

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ATE376818T1 (en) 2007-11-15
WO2002068037A1 (en) 2002-09-06
US8262687B2 (en) 2012-09-11
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EP1382367A1 (en) 2004-01-21

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