US6733521B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delivery system and method for endovascular graft
Assignee: TriVascular Inc
•
Filing: 2001-04-11
•
Granted: 2004-05-11
•
Expires: 2021-04-11
Abstract
Abstract A flexible low profile delivery system for delivery of an expandable intracorporeal device, specifically, an endovascular graft, which has at least one belt circumferentially disposed about the device in a constraining configuration. The belt is released by a release member, such as a release wire, by retracting the wire from looped ends of the belt. Multiple belts can be used and can be released sequentially so as to control the order of release and placement of the endovascular graft. An outer protective sheath may be disposed about the endovascular graft while in a constrained state which must first be retracted or otherwise removed prior to release of the graft from a constrained state. The delivery system can be configured for delivery over a guiding device such as a guidewire.
Inventors
- 👤 Michael V. Chobotov
- 👤 Brian A. Glynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:25
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2/95; A61F2/9517; A61F2/954; A61F2/82; A61F2/86; A61F2/89; A61F2002/065; A61F2002/075; A61F2002/9505; A61F2002/9511; A61F2220/00; A61F2220/0025; A61F2220/0075; A61F2250/00; A61F2250/0003
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
102 words
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 within a substantially tubular portion of the expandable intracorporeal device; a belt secured to the belt support member and disposed about a circumference of the substantially tubular portion of 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.
Claim 2
Dependent Claim
102 words
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 within a substantially tubular portion of the expandable intracorporeal device; a belt secured to the belt support member and disposed about a circumference of the substantially tubular portion of 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.
Claim 3
Dependent Claim
18 words
The delivery system of claim 1 wherein the belt constrains a self-expanding portion of the expandable intracorporeal device.
Claim 4
Dependent Claim
14 words
The delivery system of claim 2 wherein the self-expanding portion is a tubular stent.
Claim 5
Dependent Claim
23 words
The delivery system of claim 3 wherein the stent comprises a circumferential groove configured to accept at least a portion of the belt.
Claim 6
Dependent Claim
29 words
The delivery system of claim 1 wherein the belt support member is an elongate tubular member and the expandable intracorporeal member is an endovascular graft in a constrained state.
Claim 7
Dependent Claim
24 words
The delivery system of claim 1 wherein the belt comprises at least one length of wire having a first end and a second end.
Claim 8
Dependent Claim
36 words
The delivery system of claim 6 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.
Claim 9
Dependent Claim
14 words
The delivery system of claim 6 wherein the wire comprises a shape memory alloy.
Claim 10
Dependent Claim
14 words
The delivery system of claim 8 wherein the shape memory alloy comprises nickel titanium.
Claim 11
Dependent Claim
24 words
The delivery system of claim 1 wherein the release member comprises a release wire releasably secured to at least one end of the belt.
Claim 12
Dependent Claim
20 words
The delivery system of claim 10 wherein the release wire is moveably disposed within opposed looped ends of the belt.
Claim 13
Dependent Claim
28 words
The delivery system of claim 1 wherein the belt in the constraining configuration forms a plane which is substantially orthogonal to a longitudinal axis of the elongate shaft.
Claim 14
Dependent Claim
55 words
The delivery system of claim 1 wherein a plurality of additional 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, wherein at least one release member releasably secures the belts in the constraining configuration.
Claim 15
Dependent Claim
14 words
The delivery system of claim 13 wherein the total number of belts is three.
Claim 16
Dependent Claim
21 words
The delivery system of claim 13 wherein at least two belts are configured to be releasable by the same release member.
Claim 17
Dependent Claim
20 words
The delivery system of claim 13 wherein all the belts are configured to be releasable by the same release member.
Claim 18
Dependent Claim
42 words
The delivery system of claim 15 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.
Claim 19
Dependent Claim
91 words
The delivery system of claim 17 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.
Claim 20
Dependent Claim
113 words
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 guidewire tube 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.
Claim 21
Dependent Claim
113 words
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 guidewire tube 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.
Claim 22
Dependent Claim
12 words
The delivery system of claim 19 wherein the belt comprises nickel titanium.
Claim 23
Dependent Claim
54 words
The delivery system of claim 19 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.
Claim 24
Dependent Claim
84 words
The delivery system of claim 21 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.
Claim 25
Dependent Claim
25 words
The delivery system of claim 21 wherein the distal section of the delivery system comprises at least two release wires configured to release different belts.
Claim 26
Dependent Claim
50 words
The delivery system of claim 15 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.
Claim 27
Dependent Claim
168 words
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 a 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 a proximal end of the endovascular graft in the constraining configuration.
Claim 28
Dependent Claim
168 words
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 a 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 a proximal end of the endovascular graft in the constraining configuration.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-05-11 | 2007-11-10 | 2008-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-05-11 | 2011-11-10 | 2012-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-05-11 | 2015-11-10 | 2016-05-11 | $7700.00 | Window Closed / Lapsed |