EP1237504A1 - Dispositif de catheter d'acheminement de stents - Google Patents

Dispositif de catheter d'acheminement de stents

Info

Publication number
EP1237504A1
EP1237504A1 EP00982541A EP00982541A EP1237504A1 EP 1237504 A1 EP1237504 A1 EP 1237504A1 EP 00982541 A EP00982541 A EP 00982541A EP 00982541 A EP00982541 A EP 00982541A EP 1237504 A1 EP1237504 A1 EP 1237504A1
Authority
EP
European Patent Office
Prior art keywords
expandable member
guide wire
catheter
vessel
expandable
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.)
Withdrawn
Application number
EP00982541A
Other languages
German (de)
English (en)
Inventor
W. Stan Wilson
Kevin M. Mauch
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.)
Abbott Cardiovascular Systems Inc
Original Assignee
Advanced Cardiovascular Systems 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 Advanced Cardiovascular Systems Inc filed Critical Advanced Cardiovascular Systems Inc
Publication of EP1237504A1 publication Critical patent/EP1237504A1/fr
Withdrawn legal-status Critical Current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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/954—Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
    • 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
    • A61F2/02—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
    • A61F2002/067—Y-shaped blood vessels modular

Definitions

  • the invention relates to a catheter assembly for use at a bifurcation and, more particularly, a catheter assembly for implanting a bifurcated stent in a bifurcated blood vessel that is diseased, and a method and apparatus for delivery and implantation.
  • Stents conventionally repair blood vessels that are diseased. Stents are generally hollow and cylindrical in shape and have terminal ends that are generally perpendicular to their longitudinal axes. In use, the conventional stent is positioned at the diseased area of a vessel and, after placement, the stent provides an unobstructed pathway for blood flow. Repair of vessels that are diseased at a bifurcation is particularly challenging since the stent must overlay the entire diseased area at the bifurcation, yet not itself compromise blood flow.
  • the stent must, without compromising blood flow, overlay the entire circumference of the ostium to a diseased portion and extend to a point within and beyond the diseased portion. Where the stent does not overlay the entire circumference of the ostium to the diseased portion, the stent fails to completely repair the bifurcated vessel. Where the stent overlays the entire circumference of the ostium to the diseased portion, yet extends into the junction comprising the bifurcation, the diseased area is repaired, but blood flow may be compromised in other portions of the bifurcation. Unopposed stent elements may promote lumen compromise during neointimalization and healing, producing restenosis and requiring further procedures.
  • the stent may block access to portions of the bifurcated vessel that require performance of further interventional procedures. Similar problems are encountered when vessels are diseased at their angled origin from the aorta as in the ostium of a right coronary or a vein graft. In this circumstance, a stent overlaying the entire circumference of the ostium extends back into the aorta, creating problems, including those for repeat catheter access to the vessel involved in further interventional procedures.
  • Conventional stents are designed to repair areas of blood vessels that are removed from bifurcations and, since a conventional stent generally terminates at right angles to its longitudinal axis, the use of conventional stents in the region of a vessel bifurcation may result in blocking blood flow of a side branch or fail to repair the bifurcation to the fullest extent necessary.
  • the conventional stent might be placed so that a portion of the stent extends into the pathway of blood flow to a side branch of the bifurcation or extends so far as to completely cover the path of blood flow in a side branch.
  • the conventional stent might alternatively be placed proximal to, but not entirely overlaying, the circumference of the ostium to the diseased portion.
  • a stent that consistently overlays the entire circumference of the ostium to a diseased portion, yet does not extend into the junction comprising the bifurcation, may be employed.
  • Such a stent would have the advantage of completely repairing the vessel at the bifurcation without obstructing blood flow in other portions of the bifurcation.
  • such a stent would allow access to all portions of the bifurcated vessel should further interventional treatment be necessary.
  • a stent would have the advantage of completely repairing the vessel origin without protruding into the aorta or complicating repeat access.
  • a conventional stent is implanted in the main vessel such that a portion of the stent is across the side branch, so that stenting of the side branch must occur through the main-vessel stent struts.
  • the main-vessel stent struts must be spread apart to form an opening to the side branch vessel and then a catheter with a stent is delivered through the opening. The cell to be spread apart must be randomly and blindly selected by recrossing the deployed stent with a wire.
  • the side branch vessel is first stented so that the stent protrudes into the main vessel.
  • a dilatation is then performed in the main vessel to open and stretch the stent struts extending across the lumen from the side branch vessel.
  • the main-vessel stent is implanted so that its proximal end overlaps with the side branch vessel.
  • the orientation of the stent elements protruding from the side branch vessel into the main vessel is completely random.
  • the deployed stent must be recrossed with a wire blindly and arbitrarily selecting a particular stent cell.
  • a "T" stent procedure includes implanting a stent in the side branch ostium of the bifurcation followed by stenting the main vessel across the side branch ostium.
  • a stent is implanted in the main vessel with a side branch stent partially extending into the main vessel creating a double-barreled lumen of the two stents in the main vessel proximal to the bifurcation.
  • Another prior art approach includes a so-called "trouser legs and seat” approach, which includes implanting three stents, one stent in the side branch vessel, a second stent in a distal portion of the main vessel, and a third stent, or a proximal stent, in the main vessel just proximal to the bifurcation.
  • proximal when used with respect to the invention are intended to mean moving away from or out of the patient
  • distal when used with respect to the invention are intended to mean moving toward or into the patient.
  • proximal When used with reference to body lumens, such as blood vessels and the like, the terms “proximal,” “proximally,” and “proximal direction” are intended to mean toward the heart; and the terms “distal,” “distally,” and “distal direction” are intended to mean away from the heart, and particularly with respect to a bifurcated blood vessel, are intended to mean in the direction in which the branching occurs.
  • the invention provides for a catheter assembly for delivering and implanting stents.
  • the system is designed for repairing a main vessel and a side branch vessel forming a bifurcation, without compromising blood flow in other portions of the bifurcation, thereby allowing access to all portions of the bifurcated vessel should further interventional treatment be necessary.
  • the invention also solves problems associated with wire wrapping and tracking over two guide wires.
  • a stent delivery assembly for implanting a Y-shaped stent in a bifurcated vessel having a first vessel branch and a second vessel branch.
  • a dual balloon Y-shaped catheter is provided including a first expandable member having a proximal end and a distal end, a second expandable member having a proximal end and a distal end, a main catheter body, a first catheter branch connecting the first expandable member to the main catheter body, and a second catheter branch connecting the second expandable member to the main catheter body.
  • a first guide wire lumen is included for receiving a first guide wire. The first guide wire lumen extends through at least a portion of the catheter including the first expandable member.
  • a second guide wire lumen is provided for receiving a second guide wire.
  • the second guide wire lumen extends through at least a portion of the catheter including the second expandable member.
  • the first expandable member and the second expandable member are normally biased apart, but are restrained and held together to provide a low profile during delivery of a Y-shaped stent.
  • a method of stenting a bifurcated vessel having a bifurcation with a carina, a first vessel branch, and a second vessel branch including a first expandable member having a proximal end and a distal end, a second expandable member having a proximal end and a distal end, a main catheter body, a first catheter branch connecting the first expandable member to the main catheter body, and a second catheter branch connecting the second expandable member to the main catheter body.
  • the first expandable member is longer than the second expandable member.
  • the first expandable member and the second expandable member are normally biased apart, but are restrained and held together to provide a low profile during delivery of a Y-shaped stent.
  • a first guide wire lumen is provided for receiving a first guide wire.
  • the first guide wire lumen extends through at least a portion of the catheter including the first expandable member.
  • a second guide wire lumen is provided for receiving a second guide wire.
  • the second guide wire lumen extends through at least a portion of the catheter including the second expandable member.
  • a Y-shaped stent is mounted on the first and second expandable members.
  • a second guide wire is positioned such that it extends within the first vessel branch proximally of the bifurcation and within the second vessel branch distally of the bifurcation.
  • the catheter can then be advanced distally over the second guide wire via the second guide wire lumen so that the distal end of the first expandable member is advanced distally of the bifurcation in the second vessel branch, wherein the second expandable member is positioned into apposition with the bifurcation.
  • the catheter is then positioned such that the distal end of the first expandable member is just distal of the carina in the second vessel branch.
  • a first guide wire is advanced distally out of the first guide wire lumen and into the second vessel branch.
  • the second guide wire is withdrawn proximally such that the first and second expandable members are released and spring apart.
  • the second guide wire is then advanced distally in the first vessel branch.
  • the first guide wire can then be further advanced distally in the second vessel branch.
  • the catheter is then advanced distally over the first and second guide wires until the Y-shaped stent is positioned at the bifurcation.
  • the Y-shaped stent can be implanted by inflating the first and second expandable members.
  • the first and second expandable members are then deflated.
  • FIGURE 1 is an elevational view of a bifurcation in which a prior art "T" stent is in a side branch ostium followed by the stenting of the main vessel across the branch ostium.
  • FIG. 2 is an elevational view of a bifurcation in which "touching" prior art stents are depicted in which one stent is implanted in the side branch, a second stent implanted in a distal portion of the main vessel next to the branch stent, with interrupted placement of a third stent implanted more proximally in the main vessel.
  • FIG. 3 is an elevational view of a bifurcation depicting "kissing" stents where a portion of one stent is implanted in both the side branch and the main vessel and adjacent to a second stent implanted in the main vessel creating a double-barreled lumen in the main vessel proximal to the bifurcation.
  • FIG. 3 is an elevational view of a bifurcation depicting "kissing" stents where a portion of one stent is implanted in both the side branch and the main vessel and adjacent to a second stent implanted in the main vessel creating a double-barreled lumen in the main vessel proximal to the bifurcation.
  • FIG. 4 is an elevational view of a prior art "trouser legs and seat” stenting approach depicting one stent implanted in the side branch vessel, a second stent implanted in a proximal portion of the main vessel, and a close deployment of a third stent distal to the bifurcation leaving a small gap between the three stents of an uncovered lumenal area.
  • FIG. 5 A is an elevational view of a bifurcation in which a prior art stent is implanted in the side branch vessel.
  • FIG. 5B is an elevational view of a bifurcation in which a prior art stent is implanted in the side branch vessel, with the proximal end of the stent extending into the main vessel.
  • FIG. 6 is an elevational view, partially in section, depicting an embodiment of a Y-shaped catheter assembly for deploying a Y-shaped stent in a bifurcation.
  • FIG. 7 is an elevational view, partially in section, depicting the Y-shaped catheter assembly of FIG. 6 in which expandable members are restrained and held together.
  • FIG. 8 is an elevational view, partially in section, depicting a guide wire at a bifurcation.
  • FIG. 9 is an elevational view, partially in section, of a bifurcation in which the catheter of FIG. 6 is delivering the stent in the bifurcated area, tracking over the wire that joins the two expandable members together.
  • FIG. 10 is an elevational view, partially in section, of a bifurcation in which the distal end of an expandable member of the catheter of FIG. 6 is just distal to the carina.
  • FIG. 11 is an elevational view, partially in section, of a bifurcation in which the expandable members of the catheter of FIG. 6 have been released.
  • FIG. 12 is an elevational view, partially in section, in which the Y-shaped stent is in apposition with the carina.
  • FIG. 13 is an elevational view, partially in section, in which the expandable members of the catheter of FIG. 6 are in an expanded condition.
  • FIG. 14 is an elevational view, partially in section, in which the Y-shaped stent has been implanted at the bifurcation and the catheter and guide wires of FIG. 6 have been removed.
  • the present invention includes a stent delivery system for treating bifurcated vessels in, for example, the coronary arteries, veins, arteries, and other vessels in the body.
  • FIGS. 1-4 depict prior art devices which include multiple stents being implanted in both the main vessel and a side branch vessel.
  • a prior art "T" stent is implanted such that a first stent is implanted in the side branch near the ostium of the bifurcation, and a second stent is implanted in the main vessel, across the side branch ostium.
  • portions of the side branch vessel are left uncovered, and blood flow to the side branch vessel must necessarily pass through the main vessel stent, causing possible obstructions or thrombosis.
  • the prior art method includes implanting two stents side by side, such that one stent extends into the side branch vessel and the main vessel, and the second stent is implanted in the main vessel. This results in a double-barreled lumen which can present problems such as thrombosis, and turbulence in blood flow.
  • a first stent is implanted in the side branch vessel, a second stent is implanted in a proximal portion of the main vessel, and a third stent is implanted distal to the bifurcation, thereby leaving a small gap between the stents and an uncovered lumenal area.
  • a prior art stent is configured for deployment in side branch vessel 5.
  • a condition as depicted will occur. That is, a stent deployed in side branch vessel 5 will leave a portion of the side branch vessel exposed, or as depicted in 5B, a portion of the stent will extend into main vessel 6.
  • stent delivery assembly 10 is provided for treating bifurcated vessels.
  • a Y-shaped stent is implanted to cover the bifurcation.
  • Catheter 12 can be configured as a dual balloon Y-shaped catheter.
  • the catheter includes first expandable member 14 and second expandable member 16 that are configured to reside side-by-side (Y- shaped) for low profile delivery and to spring apart for implanting Y-shaped stent 18.
  • Each of the expandable members has a proximal end and a distal end.
  • the stent can be removably mounted on the first and second expandable members.
  • the catheter 12 further includes main catheter body 20.
  • a first catheter branch 22 connects first expandable member 14 to the main catheter body.
  • a second catheter branch 24 connects second expandable member 16 to the main catheter body.
  • a first guide wire lumen 26 is provided for receiving first guide wire 28.
  • the first guide wire lumen is of the over-the-wire (OTW) type, which is known in the art; however, it is contemplated that the first guide wire lumen can be of the rapid-exchange (RX) type or unzippable-rapid-exchange type, which are also known in the art.
  • the first guide wire lumen extends through at least a portion of catheter 12 including first expandable member 14.
  • a second guide wire lumen 30 A, 3 OB is provided for receiving second guide wire 32.
  • the second guide wire lumen is of the rapid-exchange type; however, it is contemplated the second guide wire lumen can be of the unzippable-rapid-exchange type or over-the-wire type.
  • the second guide wire lumen extends through at least a portion of the catheter including second expandable member 16.
  • the expandable members can be inflatable non-distensible balloons.
  • the guide wires 28,32 preferably are stiff wires each having a diameter of 0.014 inch, but can have different diameters and degrees of stiffness as required for a particular application.
  • a particularly suitable guide wire can include those manufactured and sold under the tradenames Sport® and Ironman®, manufactured by Advanced Cardiovascular Systems, Incorporated, Santa Clara, California.
  • the first expandable member 14 and second expandable member 16 are normally biased apart, but can be restrained and held together to provide a low profile during delivery of Y-shaped stent 18.
  • the expandable members can be held together by positioning second guide wire 32 through second guide wire lumen 30A that runs through the second expandable member and second guide wire lumen 30B that runs through tubular restraint 34.
  • the tubular restraint is attached to distal end 36 of the first expandable member.
  • lumen 30B can run through distal end 36.
  • the distal end of the first expandable member protrudes distally of the distal end of the second expandable member to facilitate tracking over second guide wire 32.
  • the distal end of the first expandable member can include a radiopaque marker for facilitating delivery in the body.
  • the catheter 12 further includes an inflation lumen (not shown) for inflating first and second expandable members 14, 16 simultaneously.
  • the expandable members can be inflated by delivering a suitable inflation media, such as saline, to the expandable members via the inflation lumen.
  • a suitable inflation media such as saline
  • the first expandable member is approximately twice as long as the second expandable member; however, it is contemplated that the first and second expandable members may have varying lengths.
  • Y- shaped stent 18 is mounted on first and second expandable members 14,16.
  • the second guide wire 32 (or tracking guide wire) is positioned such that it extends within first vessel branch 6 (such as a main vessel) proximally of the bifurcation and within second vessel branch 5 (such as a side-branch vessel) distally of the bifurcation.
  • the catheter 12 is then advanced distally over the second guide wire via second guide wire lumen 30A,30B so that the distal end of first expandable member 14 is advanced distally of the bifurcation in the second vessel branch.
  • the first expandable member will encounter the vessel wall proximate the carina. It is intended that this scenario will produce a tendency for the assembly to rotate as the second guide wire continues to appose the vessel wall proximate the carina. Therefore, the second expandable member 16 is positioned into apposition with the bifurcation at the carina. If necessary, the known technique of visual assignment of the guide wires can be implemented. In this case, the wires can include visible portions for identification on highly magnified fluoroscopy.
  • catheter 12 is positioned such that distal end 36 of first expandable member 14 is just distal of carina 7 in second vessel branch 5.
  • first guide wire 28 (or the integrated guide wire) can reside within first guide wire lumen 26.
  • the first guide wire can now be inserted into the proximal end of the first guide wire lumen.
  • the first guide wire is advanced distally out of the first guide wire lumen and into the second vessel branch.
  • the second guide wire 32 can then be withdrawn proximally and out of lumen 3 OB.
  • This action causes the first and second expandable members to be released and spring apart into a relaxed condition.
  • the distance that the first and second expandable members spring apart may be very small and can vary depending on the application. It is also contemplated that the catheter can be designed such that when the first and second expandable members are released they do not spring apart at all.
  • second guide wire 32 is advanced distally in first vessel branch 6.
  • the first guide wire 28 can then be further advanced distally in second vessel branch 5.
  • the catheter 12 is now advanced distally over the first and second guide wires until Y- shaped stent 18 is positioned at the bifurcation (i.e., anchored at carina 7).
  • the stent can now be anchored by inflating the first and second expandable members 14,16.
  • the first and second expandable members can now be deflated and the catheter and guide wires can be withdrawn from the patient's vasculature.
  • guide wires 28,32 and their respective lumens permit single unit transport of a Y- shaped stent to the distal target site without wire wrapping problems and it allows for minimal requirements of rotation of the device (less than 90 degrees) for optimal deployment (allowing minimal twist deformity). It is contemplated that the guide wires can be left in their respective vessels should sequential or simultaneous high pressure balloon inflation be required in each of the vessels in order to complete the stenting procedure. This additional step is a matter of physician choice.
  • Y-shaped stent 18 is delivered to a bifurcation in a manner that reduces the chances of wire wrapping and crossing.
  • the methods of the present invention can be accomplished with suitable variations of catheter 12.

Abstract

L'invention concerne un procédé et un dispositif amélioré de cathéter destinés à traiter des vaisseaux à deux branches. Ledit dispositif de cathéter de la présente invention comprend une retenue tubulaire permettant de retenir de manière amovible deux ballonnets pendant l'acheminement et l'avancement d'un stent bifurqué à travers un vaisseau. Le système est conçu pour réparer un vaisseau principal et un vaisseau dérivé latéralement qui forme une bifurcation, sans compromettre le flux sanguin dans d'autres parties de la bifurcation, ce qui permet ainsi d'accéder à toutes les parties du vaisseau à deux branches, au cas où un autre traitement d'intervention serait nécessaire.
EP00982541A 1999-12-13 2000-12-08 Dispositif de catheter d'acheminement de stents Withdrawn EP1237504A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US46012399A 1999-12-13 1999-12-13
US460123 1999-12-13
PCT/US2000/033369 WO2001041677A1 (fr) 1999-12-13 2000-12-08 Dispositif de catheter d'acheminement de stents

Publications (1)

Publication Number Publication Date
EP1237504A1 true EP1237504A1 (fr) 2002-09-11

Family

ID=23827470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00982541A Withdrawn EP1237504A1 (fr) 1999-12-13 2000-12-08 Dispositif de catheter d'acheminement de stents

Country Status (5)

Country Link
EP (1) EP1237504A1 (fr)
JP (1) JP2003516181A (fr)
AU (1) AU1956201A (fr)
CA (1) CA2392749A1 (fr)
WO (1) WO2001041677A1 (fr)

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EP1547546B1 (fr) * 1999-01-27 2010-11-03 Boston Scientific Limited Systeme de pose d'extenseur pour bifurcation
US9427340B2 (en) 2004-12-14 2016-08-30 Boston Scientific Scimed, Inc. Stent with protruding branch portion for bifurcated vessels
US8216267B2 (en) 2006-09-12 2012-07-10 Boston Scientific Scimed, Inc. Multilayer balloon for bifurcated stent delivery and methods of making and using the same
US8343181B2 (en) 2007-03-01 2013-01-01 Medtronic Vascular, Inc. Method and apparatus for treating stenoses at bifurcated regions
US20090054836A1 (en) * 2007-08-20 2009-02-26 Medtronic Vascular, Inc. Method and Apparatus for Treating Stenoses at Bifurcated Regions
WO2009140719A1 (fr) * 2008-05-23 2009-11-26 Neustent Pty Ltd Fabrication d'un stent
US8932340B2 (en) 2008-05-29 2015-01-13 Boston Scientific Scimed, Inc. Bifurcated stent and delivery system
US8292941B2 (en) 2009-04-23 2012-10-23 Medtronic Vascular, Inc. Delivery system for deployment of a one-piece iliac-branch device
DE102009033757B4 (de) * 2009-07-17 2017-04-13 Reza Golestani Bifurkationsstentsystem
CA2786862A1 (fr) 2010-01-22 2011-07-28 Concept Medical Research Private Limited Methode et ensemble catheter a ballonnet pour traiter des lesions de bifurcation
US8574283B1 (en) * 2011-08-30 2013-11-05 Suraj Govind Kamat Deployment of stents within bifurcated vessels
DE102020115614A1 (de) * 2020-06-12 2021-12-16 Phenox Gmbh Einführsystem für Implantate zur Behandlung von Bifurkationsaneurysmen
CN217960428U (zh) * 2022-03-03 2022-12-06 上海启功医疗科技有限公司 用于主动脉全长的支架、支架套件及支架递送系统

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IT1294216B1 (it) * 1997-07-28 1999-03-24 Marco Zimarino Protesi endovascolare in particolare per interventi di angioplastica
US6165195A (en) * 1997-08-13 2000-12-26 Advanced Cardiovascylar Systems, Inc. Stent and catheter assembly and method for treating bifurcations

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Also Published As

Publication number Publication date
CA2392749A1 (fr) 2001-06-14
JP2003516181A (ja) 2003-05-13
AU1956201A (en) 2001-06-18
WO2001041677A1 (fr) 2001-06-14

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