CA2443104A1 - Delivery system and method for bifurcated graft - Google Patents

Delivery system and method for bifurcated graft Download PDF

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Publication number
CA2443104A1
CA2443104A1 CA002443104A CA2443104A CA2443104A1 CA 2443104 A1 CA2443104 A1 CA 2443104A1 CA 002443104 A CA002443104 A CA 002443104A CA 2443104 A CA2443104 A CA 2443104A CA 2443104 A1 CA2443104 A1 CA 2443104A1
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Canada
Prior art keywords
delivery system
belt
release
primary
graft
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Granted
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CA002443104A
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French (fr)
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CA2443104C (en
Inventor
Michael V. Chobotov
Brian A. Glynn
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TriVascular Inc
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Individual
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Priority claimed from US09/834,278 external-priority patent/US6733521B2/en
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Priority to CA2732662A priority Critical patent/CA2732662A1/en
Publication of CA2443104A1 publication Critical patent/CA2443104A1/en
Application granted granted Critical
Publication of CA2443104C publication Critical patent/CA2443104C/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/954Instruments specially adapted for placement or removal of stents or stent-grafts for placing stents or stent-grafts in a bifurcation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/04Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06Blood vessels
    • A61F2/07Stent-grafts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/9517Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/962Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/04Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06Blood vessels
    • A61F2002/065Y-shaped blood vessels
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2002/9505Instruments 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
    • A61F2002/9511Instruments 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 the retaining means being filaments or wires
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/95Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/962Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
    • A61F2/966Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
    • A61F2002/9665Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod with additional retaining means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0003Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having an inflatable pocket filled with fluid, e.g. liquid or gas
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers

Abstract

A flexible low profile delivery system (10) for delivery of an expandable intracorporeal device (11), specifically, an endovascular graft, which has at least one belt (21) circumferentially disposed about the device in a constraining configuration. The belt (21) is released by a release member (24), such as a release wire, by retracting the wire from looped ends (81) of the belt (21). Multiple belts (24, 21, 22) can be used and can be released sequentially so as to control the order of release and placement of the endovascular graft (11). An outer protective sheath (53) may be disposed about the endovascular (11) graft while in a constrained state which must first be retracted or otherwise removed prior to release of the graft (11) from a constrained state. The delivery system (10) can be configured for delivery over a guiding device (18) such as a guidewire. The delivery system can also be configured for delivery of bifurcated intracorporeal devices.

Claims (84)

1. A delivery system for a bifurcated intracorporeal device comprising:
an elongate shaft having a proximal section and a distal section with the distal section comprising:

an elongate primary belt support member;
at least one primary belt secured to the primary belt support member configured to be circumferentially disposed about a bifurcated intracorporeal device so to at least partially constrain the device;

a primary release member configured to engage and releasably secure the primary belt in a constraining configuration;

at least one elongate secondary belt support member disposed adjacent the elongate primary. belt support member;

at least one secondary belt secured to the secondary belt support member configured to be circumferentially disposed about a bifurcated intracorporeal device so to at least partially constrain the device; and a secondary release member configured to engage and releasably secure the secondary belt in a constraining configuration.
2. The delivery system of claim 1 wherein the primary belt support member is an elongate tubular member and the bifurcated intracorporeal device is a bifurcated endovascular graft in a constrained state.
3. The delivery system of claim 1 wherein the primary belt and secondary belt each comprise a length of wire having a first end and a second end with each of said first and second wire ends secured to the primary belt support member, and secondary belt support member respectively.
4. The delivery system of claim 1 wherein one or both of the primary belt and the secondary belt comprise first and second opposed ends and wherein the first opposed end has a different cross-sectional area than the second opposed end.
5. The delivery system of claim 4 wherein each of the first and second opposed ends form an end loop.
6. The delivery system of claim 3 wherein the wire comprises nickel titanium.
7. The delivery system of claim 1 wherein the release members comprise release wires moveably disposed within opposed looped ends of the respective belts.
8. The delivery system of claim 1 wherein the belts in the constraining configuration form a plane that is substantially orthogonal to a longitudinal axis of the elongate shaft.
9. The delivery system of claim 1 wherein at least two belts are configured to be releasable by a single release member.
10. The delivery system of claim 1 comprising a plurality of primary release members wherein the proximal ends of at least two of the primary release members are color-coded.
11. The delivery system of claim 1 comprising a plurality of primary release members wherein proximal ends of the primary release members are in a linear spatial configuration at a proximal end of the delivery system that corresponds to a desired deployment sequence for a plurality of belts.
12. The delivery system of claim 11 wherein the plurality of primary release members comprise a distal primary release wire handle and a proximal primary release wire handle disposed in a nested configuration.
13. The delivery system of claim 1 wherein the primary release member comprises a branched release wire.
14. The delivery system of claim 1 further comprising a secondary belt support member housing secured to the primary belt support member wherein the secondary belt support member is configured to move axially within the housing and the housing and secondary belt support member are configured to prevent relative rotational movement therebetween.
15. A delivery system for a bifurcated graft comprising:
an elongate shaft having a proximal section and a distal section with the distal section comprising:

a portion having disposed thereon the bifurcated graft, the graft having a main body portion, an ipsilateral leg and a contralateral leg;
an elongate primary belt support member disposed adjacent the main body portion and ipsilateral leg;
at least one primary belt secured to the primary belt support member and circumferentially disposed about the bifurcated graft and which constrains at least a portion of the graft;

a primary release member which releasably secures the primary belt in the constraining configuration;
at least one secondary belt support member disposed adjacent the contralateral leg;
at least one secondary belt secured to the secondary belt support member and circumferentially disposed about the bifurcated graft and which constrains at least a portion of the graft; and a secondary release member which releasably secures the secondary belt in the constraining configuration.
16. The delivery system of claim 15 additionally comprising a first proximal self expending member secured to a proximal end of the contralateral leg and a second proximal self expanding member secured to a proximal end of the ipsilateral leg, and wherein the legs have a different length and the first and second proximal self expanding members are axially offset from each other when the graft is in a constrained state within the delivery system.
17. The delivery system of claim 15 additionally comprising a first proximal self expanding member secured to a proximal end of the contralateral leg and a second proximal self expanding member secured to a proximal end of the ipsilateral leg and wherein the legs have substantially the same length and one of the legs is axially compressed or folded such that the first and second proximal self expanding members are axially offset from each other when the graft is in a restrained state within the delivery system.
18. The delivery system of claim 15 wherein the primary belt constrains a distal self expanding member disposed at a distal end of the bifurcated graft main body portion.
19. The delivery system of claim 16 wherein the distal self expanding member is a tubular stent.
20. The delivery system of claim 17 wherein the stent comprises a circumferential groove configured to accept at least a portion of the primary belt.
21. The delivery system of claim 15 wherein the primary belt and the secondary belt comprise at least one length of wire having a first end and a second end and configured in a loop with each of said first and second wire ends secured to the primary belt support member and secondary belt support member, respectively.
22. The delivery system of claim 15 wherein the primary belt and secondary belt comprise at least one length of wire having opposed end loops having differing diameters.
23. The delivery system of claim 21 wherein the wire comprises nickel titanium.
24. The delivery system of claim 15 wherein the release members comprise release wires moveably disposed within opposed looped ends of the respective belts.
25. The delivery system of claim 15 wherein the belts in the constraining configuration form a plane that is substantially orthogonal to a longitudinal axis of the elongate shaft.
26. The delivery system of claim 15 wherein at least two primary belts are configured to be releasable by the same release member.
27. The delivery system of claim 15 wherein the primary belt support member comprises a guidewire tube.
28. The delivery system of claim 26 wherein the distal section further comprises an outer protective sheath disposed about the endovascular graft while the graft is in a constrained state.
29. A delivery system for a bifurcated graft having a main body portion, an ipsilateral leg, contralateral leg and a plurality of self expanding members secured to the graft, comprising:

an elongate shaft having a proximal section and a distal section with the distal section of the elongate shaft comprising:

a portion having disposed thereon the bifurcated graft;

an elongate primary belt support member disposed within the main body portion and ipsilateral leg of the bifurcated graft;

a plurality of primary belts secured to a primary belt support member comprising a guidewire tube adjacent self expanding members of the graft, the belts being circumferentially disposed about adjacent self expanding members in a configuration that at least partially constrains the respective self expanding members;
a primary release wire that engages and releasably secures at least one of the primary belts in a constraining configuration;
a secondary belt support member disposed within the contralateral leg of the bifurcated graft;
a secondary belt secured to the belt support member adjacent self expanding members of the graft, the belt being circumferentially disposed about an adjacent self expanding member in a configuration that at least partially constrains the adjacent self expanding member; and a secondary release wire that engages and releasably secures the secondary belt in a constraining configuration.
30. A delivery system for a bifurcated intracorporeal device comprising:
an elongate shaft means having a proximal section and a distal section with the distal section comprising:
an elongate primary constraint support means;
at least one primary constraint means secured to the primary constraint support means configured to be circumferentially disposed about a bifurcated intracorporeal device so to at least partially constrain the device;
a primary release means configured to engage and releasably secure the primary constraint means in a constraining configuration;
at least one elongate secondary constraint support member disposed adjacent the elongate primary constraint support means;
at least one secondary constraint means secured to the secondary constraint support means configured to be circumferentially disposed about a bifurcated intracorporeal device so to at least partially constrain the device; and a secondary release means configured to engage and releasably secure the secondary constraint means in a constraining configuration.
31. The delivery system of claim 30 wherein the primary constraint support means is an elongate tubular means and the bifurcated intracorporeal device is a bifurcated endovascular graft in a constrained state.
32. The delivery system of claim 30 wherein one or both of the primary constraint means and the secondary constraint means comprise first and second opposed ends and wherein the first opposed end has a different cross-sectional area than the second opposed end.
33. The delivery system of claim 30 wherein the constraint means in the constraining configuration form a plane that is substantially orthogonal to a longitudinal axis of the elongate shaft means.
34. The delivery system of claim 30 wherein at least two of the constraint means are configured to be releasable by a single release means.
35. The delivery system of claim 30 comprising a plurality of primary release means wherein the proximal ends of at least two of the primary release means are color-coded.
36. The delivery system of claim 30 comprising a plurality of primary release means wherein proximal ends of the primary release means are in a linear spatial configuration that corresponds to a desired deployment sequence for a plurality of constraint means.
37. A delivery system for a bifurcated graft comprising:
an elongate shaft means having a proximal section and a distal section with the distal section comprising:
a portion having disposed thereon the bifurcated graft, the graft having a main body portion, an ipsilateral leg and a contralateral leg;

an elongate primary constraint support means disposed adjacent the main body portion and ipsilateral leg;
at least one primary constraint means secured to the primary constraint support means and circumferentially disposed about the bifurcated graft and which constrains at least a portion of the graft;
a primary release means which releasably secures the primary constraint means in the constraining configuration;
at least one secondary constraint support means disposed adjacent the contralateral leg;
at least one secondary constraint means secured to the secondary constraint support means and circumferentially disposed about the bifurcated graft and which constrains at least a portion of the graft; and a secondary release means which releasably secures the secondary constraint means in the constraining configuration.
38. The delivery system of claim 37 wherein the primary constraint means constrains a distal self expanding member disposed at a distal end of the bifurcated graft main body portion.
39. The delivery system of claim 37 wherein the constraint means in the constraining configuration form a plane that is substantially orthogonal to a longitudinal axis of the elongate shaft means.
40. A delivery system for a bifurcated graft having a main body portion, an ipsilateral leg, contralateral leg and a plurality of self expanding members secured to the graft, comprising:
an elongate shaft means having a proximal section and a distal section with the distal section of the elongate shaft comprising:
a portion having disposed thereon the bifurcated graft;

an elongate primary constraint support means comprising a guidewire tube means disposed within the main body portion and ipsilateral leg of the bifurcated graft;
a plurality of primary constraint means secured to the primary constraint support means adjacent respective self expanding members of the graft, the primary constraint means being circumferentially disposed about the adjacent self expanding members in a configuration that at least partially constrains the respective self expanding members;
a primary release means that engages and releasably secures at least one of the primary constraint means in a constraining configuration;
a secondary constraint support means disposed within the contralateral leg of the bifurcated graft;
a secondary constraint means secured to the secondary constraint support means adjacent respective self expanding members of the graft, the secondary constraint means being circumferentially disposed about the adjacent self expanding members in a configuration that at least partially constrains the adjacent self expanding members; and a secondary release means that engages and releasably secures the secondary constraint means in a constraining configuration.
41. A delivery system for an expandable intracorporeal device comprising:
an elongate shaft having a proximal section and a distal section with the distal section of the elongate shaft comprising:
a portion having disposed thereon the expandable intracorporeal device;
an elongate belt support member disposed adjacent a portion of the expandable intracorporeal device;
a belt secured to the belt support member and circumferentially disposed about the expandable intracorporeal device and which constrains at least a portion of the expandable intracorporeal device; and a release member which releasably secures the belt in the constraining configuration.
42. The delivery system of claim 41 wherein the belt constrains a self expanding portion of the expandable intracorporeal device.
43. The delivery system of claim 42 wherein the self expanding portion is a tubular stent.
44. The delivery system of claim 43 wherein the stent comprises a cicumferential groove configured to accept at least a portion of the belt.
45. The delivery system of claim 41 wherein the belt support member is an elongate tubular member and the expandable intracorporeal member is an endovascular graft in a constrained state.
46. The delivery system of claim 41 wherein the belt comprises at least one length of wire having a first end and a second end.
47. The delivery system of claim 46 wherein the at least one length of wire is configured in at least one loop with each of said first and second wire ends secured to the belt support member.
48. The delivery system of claim 46 wherein the wire comprises a shape memory alloy.
49. The delivery system of claim 48 wherein the wire comprises nickel titanium.
50. The delivery system of claim 41 wherein the release member comprises a release wire releasably secured to at least one end of the belt.
51. The delivery system of claim 50 wherein the release wire is moveably disposed within opposed looped ends of the belt.
52. The delivery system of claim 41 wherein the belt in the constraining configuration forms a plane which is substantially orthogonal to a longitudinal axis of the elongate shaft.
53. The delivery system of claim 41 wherein a plurality of belts are secured to various axial positions on the belt support member and circumferentially disposed about the expandable intracorporeal device and have a configuration that constrains the expandable intracorporeal device, and at least one release member that releasably secures the belts in the constraining configuration.
54. The delivery system of claim 53 wherein the number of belts is three.
55. The delivery system of claim 53 wherein at least two belts are configured to be releasable by the same release member.
56. The delivery system of claim 53 wherein all the belts are configured to be releasable by the same release member.
57. The delivery system of claim 55 wherein the order in which the at least two belts are released is determined by the axial position of the at least two belts and the direction of movement of the at least one release member.
58. The delivery system of claim 57 wherein the at least one release member comprises a release wire moveably disposed within opposed looped ends of each belt and wherein the delivery system is configured such that a distal-most belt will be released first when a distal end of the release wire is retracted in a proximal direction so as to move past the looped ends of the distal-most belt, and belts located more proximally are released sequentially thereafter as the distal end of the release wire passes the respective looped ends thereof.
59. A delivery system for an endovascular graft with a flexible tubular body portion and at least one self expanding member secured to the flexible tubular body portion, comprising:
an elongate shaft having a proximal section and a distal section with the distal section of the elongate shaft comprising:
a portion having disposed thereon the self expanding endovascular graft;
an elongate belt support member disposed adjacent the self expanding member of the endovascular graft;
a belt secured to the belt support member adjacent the self expanding member and circumferentially disposed about the self expanding member and which has a configuration which constrains the self expanding member; and a release wire releasably securing ends of the belt in the constraining configuration.
60. The delivery system of claim 59 wherein the belt support member comprises a guidewire tube.
61. The delivery system of claim 59 wherein the belt comprises nickel titanium.
62. The delivery system of claim 59 wherein the endovascular graft comprises a plurality of self expanding members and wherein a plurality of belts are secured to various axial positions on the belt support member adjacent the plurality of self expanding members, and circumferentially disposed about the self expanding members and having a configuration which constrains the self expanding members.
63. The delivery system of claim 62 wherein the release wire is moveably disposed within opposed looped ends of the belts and configured such that a distal-most belt will be released first when a distal end of the release wire is retracted in a proximal direction so as to move past the looped ends of the distal most belt, and belts located more proximally in an axial direction are released sequentially thereafter as the distal end of the release wire passes the respective looped ends thereof.
64. The delivery system of claim 62 wherein the distal section of the delivery system comprises at least two release wires configured to release different belts.
65. The delivery system of claim 59 wherein the distal section further comprises an outer protective sheath disposed about the endovascular graft while the graft is in a constrained state, the belts being in their constraining configuration and at least a portion of the release wire being disposed at the belts.
66. A delivery system for an endovascular graft with a flexible tubular body portion and a plurality of self expanding members secured to the tubular body portion, comprising:
an elongate shaft having a proximal section and a distal section with the distal section of the elongate shaft comprising:
a portion having disposed thereon a self expanding endovascular graft;
an elongate guidewire tube disposed within the endovascular graft with the endovascular graft being in a constrained state;
a plurality of shape memory wire belts secured to the guidewire tube adjacent the respective self expanding members, the belts being circumferentially disposed about the respective self expanding members and which have a configuration that constrains the respective self expanding members;
a first release wire that releasably secures ends of the belts disposed about the self expanding members at the distal end of the endovascular graft in the constraining configuration; and a second release wire that releasably secures ends of the belts disposed about the self expanding members at the proximal end of the endovascular graft in the constraining configuration.
67. A delivery system for an expandable intracorporeal device comprising:
an elongate shaft having a proximal section and a distal section with the distal section comprising:
an elongate belt support member disposed adjacent a portion of the distal portion configured to receive an expandable intracorporeal device;
at least one belt secured to the belt support member and which is configured to be circumferentially disposed about the expandable intracorporeal device to constrain the expandable intracorporeal device; and a release member which releasably secures the belt in the constraining configuration.
68. The delivery system of claim 67 wherein the belt support member is an elongate tubular member and the expandable intracorporeal member is an endovascular graft in a constrained state.
69. The delivery system of claim 67 wherein the belt comprises at least one length of wire having a first end and a second end.
70. The delivery system of claim 69 wherein the at least one length of wire is configured in at least one loop with each of said first and second wire ends secured to the belt support member.
71. The delivery system of claim 69 wherein the wire comprises a shape memory alloy.
72. The delivery system of claim 71 wherein the wire comprises nickel titanium.
73. The delivery system of claim 67 wherein the release member comprises a release wire releasably secured to loop ends of the belt.
74. The delivery system of claim 73 wherein the release wire is moveably disposed within opposed looped ends of the belt.
75. The delivery system of claim 67 wherein the belt in the constraining configuration forms a plane which is substantially orthogonal to a longitudinal axis of the elongate shaft.
76. The delivery system of claim 67 wherein the delivery system comprises a plurality of belts.
77. The delivery system of claim 76 wherein at least two belts are configured to be releasable by the same release member.
78. The delivery system of claim 76 wherein all the belts are configured to be releasable by the same release member.
79. The delivery system of claim 77 wherein the order in which the at least two belts are released is determined by the axial position of the at least two belts and the direction of movement of the at least one release member.
80. The delivery system of claim 79 wherein the at least one release member comprises a release wire moveably disposed within at least one end of each belt and wherein the delivery system is configured such that a distal-most belt will be released first when a distal end of the release wire is retracted in a proximal direction so as to move past the at least one end of the distal-most belt, and belts located more proximally are released sequentially thereafter as the distal end of the release wire passes the respective ends thereof.
81. The delivery system of claim 76 further comprising a plurality of release members wherein at least a portion of the proximal end of at least two of the release members are different colors.
82. The delivery system of claim 81 wherein the release members comprise release wire handles secured to proximal ends of release wires and at least a portion of at least two of the release wire handles are of different colors.
83. The delivery system of claim 76 further comprising a plurality of release members wherein proximal ends of the release members are in a linear spatial configuration at a proximal end of the delivery system that corresponds to a desired deployment order for the plurality of belts.
84. The delivery system of claim 76 wherein the release member comprises a branched release wire.
CA2443104A 2001-04-11 2002-04-11 Delivery system and method for bifurcated graft Expired - Lifetime CA2443104C (en)

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US09/834,278 US6733521B2 (en) 2001-04-11 2001-04-11 Delivery system and method for endovascular graft
US09/917,371 US6761733B2 (en) 2001-04-11 2001-07-27 Delivery system and method for bifurcated endovascular graft
US09/917,371 2001-07-27
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US20030004560A1 (en) 2003-01-02
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AU2002256191B2 (en) 2006-11-23

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