Patent US3649123A successfully refreshed from Google Patents.
Patent US20070185559A1 successfully refreshed from Google Patents.
US20070185559A1
Active / In Force
US
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Expansion-assisting delivery system for self-expanding stent
Assignee: Boston Scientific Scimed Inc
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Filing: 2007-04-05
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Granted: —
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Expires: 2027-04-05
Abstract
Abstract A delivery system for a self-expanding stent includes a catheter having a distal end and being configured to retain a self-expanding stent proximate the distal end. The delivery system also includes an inflatable device provided on the catheter and positioned proximate the distal end. The inflatable device, typically a balloon, is configured to selectively assist the self-expanding stent with radially expansion. The catheter includes a tubular member and an outer member coaxially positioned about the tubular member. The outer member can slide relative to the tubular member in an axial direction. The outer member is configured to retain a self-expanding stent in a radially-compressed position and to release the self-expanding stent to a radially-expanded position. The delivery system may also include a holding sleeve provided on the tubular member, spaced from the distal end of the catheter, and configured to hold the self-expanding stent. The delivery system preferably includes a loading funnel configured to be removably attachable to the distal end of the tubular member and configured to assist with radial compression of the self-expanding stent and advancement of the self-expanding stent within the outer member.
Inventors
- 👤 Susan Shelso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/962; A61F2/966
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
5 words
1 - 28 . (canceled)
Claim 2
Dependent Claim
5 words
1 - 28 . (canceled)
Claim 3
Dependent Claim
142 words
29 . A delivery system for a self-expanding stent, the delivery system comprising: an inner member having a distal end, the inner member being configured to retain a self-expanding stent proximate the distal end, the inner member including a marker band disposed between a distalmost leading end of the self-expanding stent and a trailing end of the self-expanding stent, wherein the marker band indicates a re-constrain limit of a partially-expanded, self-expanding stent; an outer member positioned about the inner member, the outer member being slidable relative to the inner member in an axial direction; a holding sleeve positioned within an interior of the stent so as to retain the positioning of the stent; and a single inflatable device positioned about the inner member, wherein the inflatable device is disposed solely between the holding sleeve and the distal end of the inner member.
Claim 4
Dependent Claim
142 words
29 . A delivery system for a self-expanding stent, the delivery system comprising: an inner member having a distal end, the inner member being configured to retain a self-expanding stent proximate the distal end, the inner member including a marker band disposed between a distalmost leading end of the self-expanding stent and a trailing end of the self-expanding stent, wherein the marker band indicates a re-constrain limit of a partially-expanded, self-expanding stent; an outer member positioned about the inner member, the outer member being slidable relative to the inner member in an axial direction; a holding sleeve positioned within an interior of the stent so as to retain the positioning of the stent; and a single inflatable device positioned about the inner member, wherein the inflatable device is disposed solely between the holding sleeve and the distal end of the inner member.
Claim 5
Dependent Claim
41 words
30 . The delivery system of claim 29 , wherein the inner member includes a second marker band corresponding to a proximal end of a self-expanding stent, and a third marker band corresponding to a distal end of the self-expanding stent.
Claim 6
Dependent Claim
26 words
31 . The delivery system of claim 29 , wherein the inflatable device is a balloon configured to selectively assist the self-expanding stent with radial expansion.
Claim 7
Dependent Claim
32 words
32 . The delivery system of claim 29 , wherein at least a portion of the self-expanding stent overlaps a portion of the inflatable device prior to deployment of the self-expanding stent.
Claim 8
Dependent Claim
34 words
33 . The delivery system of claim 29 , wherein the outer member is configured to retain the self-expanding stent in a radially-compressed position and to release the self-expanding stent to a radially-expanded position.
Claim 9
Dependent Claim
45 words
34 . The delivery system of claim 29 , further comprising a loading funnel, the loading funnel configured to be removably attachable to the distal end of the outer member, and to receive the stent therein as the stent is loaded onto the delivery system.
Claim 10
Dependent Claim
34 words
35 . The delivery system of claim 34 , wherein the loading funnel is configured to assist with radial compression of the self-expanding stent and advancement of the self-expanding stent within the outer member.
Claim 11
Dependent Claim
25 words
36 . The delivery system of claim 29 , further comprising a spacing jacket coaxially positioned about the inner member and inside the outer member.
Claim 12
Dependent Claim
37 words
37 . The delivery system of claim 29 , further comprising a fluid port, the fluid port configured to receive a fluid and direct the fluid to a region between the inner member and the outer member.
Claim 13
Dependent Claim
54 words
38 . The delivery system of claim 29 , wherein the inner member defines a first lumen and a second lumen, one of the first lumen and the second lumen configured to receive a guidewire, and the other of the first lumen and the second lumen providing a fluid passage to the inflatable device.
Claim 14
Dependent Claim
26 words
39 . The delivery system of claim 30 , wherein at least one of the first, second, and third marker bands is a radiopaque marker band.
Claim 15
Dependent Claim
33 words
40 . In combination, a self-expanding stent and a delivery system for the self-expanding stent, the combination comprising: the delivery system of claim 29; and a self-expanding stent mounted on the delivery system.
Claim 16
Dependent Claim
188 words
41 . A method for implantation of a self-expanding stent, the method comprising: providing a delivery system comprising: a self-expanding stent; an inner member having a distal end, the inner member being configured to retain a self-expanding stent proximate the distal end, the inner member including a marker band disposed between a distalmost leading end of the self-expanding stent and a trailing end of the self-expanding stent, wherein the marker band indicates a re-constrain limit of a partially-expanded, self-expanding stent; an outer member positioned about the inner member, the outer member being slidable relative to the inner member in an axial direction; a holding sleeve positioned within an interior of the stent so as to retain the positioning of the stent; and a single inflatable device positioned about the inner member, wherein the inflatable device is disposed solely between the holding sleeve and the distal end of the inner member; delivering the delivery system to a region of a vessel to be repaired; implanting the self-expanding stent into a wall of the vessel to be repaired; and inflating the inflatable device to assist expansion of the self-expanding stent.
Claim 17
Dependent Claim
188 words
41 . A method for implantation of a self-expanding stent, the method comprising: providing a delivery system comprising: a self-expanding stent; an inner member having a distal end, the inner member being configured to retain a self-expanding stent proximate the distal end, the inner member including a marker band disposed between a distalmost leading end of the self-expanding stent and a trailing end of the self-expanding stent, wherein the marker band indicates a re-constrain limit of a partially-expanded, self-expanding stent; an outer member positioned about the inner member, the outer member being slidable relative to the inner member in an axial direction; a holding sleeve positioned within an interior of the stent so as to retain the positioning of the stent; and a single inflatable device positioned about the inner member, wherein the inflatable device is disposed solely between the holding sleeve and the distal end of the inner member; delivering the delivery system to a region of a vessel to be repaired; implanting the self-expanding stent into a wall of the vessel to be repaired; and inflating the inflatable device to assist expansion of the self-expanding stent.
Claim 18
Dependent Claim
35 words
42 . The method of claim 41 , wherein delivering the delivery system includes: positioning a medical guidewire; and guiding the delivery system with the guidewire to the area of the vessel to be repaired.
Claim 19
Dependent Claim
31 words
43 . The method of claim 41 , wherein inflating the inflatable device includes re-positioning the already-delivered delivery system such that the inflatable device is properly aligned with the self-expanding stent.
Claim 20
Dependent Claim
29 words
44 . The method of claim 43 , wherein re-positioning the already-delivered delivery system includes slightly retracting the delivery system from the point of the implantation of the stent.
Claim 21
Dependent Claim
19 words
45 . The method of claim 41 , wherein inflating the device includes supplying fluid to the inflatable device.
Claim 22
Dependent Claim
14 words
46 . The method of claim 45 , wherein supplying fluid includes supplying air.
Claim 23
Dependent Claim
24 words
47 . The method of claim 45 , wherein supplying fluid includes supplying fluid by way of a lumen extending through the inner member.
Claim 24
Dependent Claim
23 words
48 . The method of claim 41 , further comprising: deflating the inflatable device; and withdrawing the delivery system from a patient's anatomy.
Claim 25
Dependent Claim
34 words
49 . The method of claim 41 , further comprising: releasing a portion of the self-expanding stent to a position corresponding with the marker band on the inner member; and re-constraining the self-expanding stent.
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