Patent US20020143387A1 successfully refreshed from Google Patents.
US20020143387A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent repositioning and removal
Assignee: Leland Stanford Junior University
•
Filing: 2001-07-06
•
Granted: —
•
Expires: 2021-07-06
Abstract
Abstract A stent removal system. Surgical devices and methods are provided for a system that allows the repositioning or removal of luminal stents. A conventional stent is modified by the addition of a tightening drawstring with a loop or region for grasping. When the stent is inserted within the body, the drawstring is slack and does not constrict the stent. When the drawstring is tightened, for example by pulling on the region for grasping, the circumference of the stent at the terminus is decreased, allowing the stent to be repositioned or removed without trauma to the organ.
Inventors
- 👤 Roy Soetikno
- 👤 Shai Friedland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2002/9505; A61F2002/9511; A61F2002/9528
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
124 words
1 . A method for the repositioning or removal of a luminal stent, the method comprising: modifying a luminal stent prior to insertion in a tissue, by adding a tightening drawstring through one or both termini of the stent, wherein said drawstring is slack during normal use of the stent; repositioning or removing said stent by the method of: grasping said drawstring with a grasping element of a stent removal device; withdrawing said grasping element into a protective sheath or over tube, thereby tightening said drawstring and decreasing the circumference of said stent; withdrawing said stent at least partially into said protective sheath or over tube in order to reposition within said tissue or to remove from said tissue; withdrawing said stent removal device.
Claim 2
Dependent Claim
124 words
1 . A method for the repositioning or removal of a luminal stent, the method comprising: modifying a luminal stent prior to insertion in a tissue, by adding a tightening drawstring through one or both termini of the stent, wherein said drawstring is slack during normal use of the stent; repositioning or removing said stent by the method of: grasping said drawstring with a grasping element of a stent removal device; withdrawing said grasping element into a protective sheath or over tube, thereby tightening said drawstring and decreasing the circumference of said stent; withdrawing said stent at least partially into said protective sheath or over tube in order to reposition within said tissue or to remove from said tissue; withdrawing said stent removal device.
Claim 3
Dependent Claim
19 words
2 . The method according to claim 1 , wherein said luminal stent is inserted in the gastrointestinal tract.
Claim 4
Dependent Claim
19 words
3 . The method according to claim 1 , wherein said stent removal device is housed with an endoscope.
Claim 5
Dependent Claim
29 words
4 . The method according to claim 3 , wherein an over tube is provided to cover said endoscope, and wherein said stent is withdrawn into said over tube.
Claim 6
Dependent Claim
17 words
5 . The method according to claim 1 , wherein said stent is a metallic, self-expanding stent.
Claim 7
Dependent Claim
17 words
6 . The method according to claim 1 , wherein said tightening drawstring is a nylon filament.
Claim 8
Dependent Claim
24 words
7 . The method according to claim 1 , wherein said tightening drawstring is threaded through the wires of said stent at one terminus.
Claim 9
Dependent Claim
27 words
8 . The method according to claim 1 , wherein said tightening drawstring is threaded through the wires through at part of the length of the stent.
Claim 10
Dependent Claim
24 words
9 . The method according to claim 1 , wherein said tightening drawstring is threaded through eyelets provided on the terminus of the stent.
Claim 11
Dependent Claim
72 words
10 . A stent removal system, the system comprising: a luminal stent comprising a tightening drawstring through one or both termini of the stent, wherein said drawstring is slack during normal use of the stent; a stent removal device, comprising a flexible elongate member with proximal and distal ends, a grasping member at the distal end, and a manual means for actuating the grasping member at the proximal end of the device.
Claim 12
Dependent Claim
72 words
10 . A stent removal system, the system comprising: a luminal stent comprising a tightening drawstring through one or both termini of the stent, wherein said drawstring is slack during normal use of the stent; a stent removal device, comprising a flexible elongate member with proximal and distal ends, a grasping member at the distal end, and a manual means for actuating the grasping member at the proximal end of the device.
Claim 13
Dependent Claim
22 words
11 . The system according to claim 10 , wherein said stent removal device comprises a protective sheath over said elongate member.
Claim 14
Dependent Claim
23 words
12 . The system according to claim 10 , wherein said stent removal device further comprises an endoscope, and a protective over tube.
Claim 15
Dependent Claim
17 words
13 . The system according to claim 10 , wherein said stent is a metallic, self-expanding stent.
Claim 16
Dependent Claim
17 words
14 . The system according to claim 13 , wherein said stent is suitable for gastrointestinal use.
Claim 17
Dependent Claim
17 words
15 . The system according to claim 10 , wherein said tightening drawstring is a nylon filament.
Claim 18
Dependent Claim
24 words
16 . The system according to claim 10 , wherein said tightening drawstring is threaded through the wires of said stent at one terminus.
Claim 19
Dependent Claim
27 words
17 . The system according to claim 10 , wherein said tightening drawstring is threaded through the wires through at part of the length of the stent.
Claim 20
Dependent Claim
24 words
18 . The system according to claim 10 , wherein said tightening drawstring is threaded through eyelets provided on the terminus of the stent.
References Cited (Backward Citations)
US5035706A
Cited
US5290294A
Cited
US5776186A
Cited
US6241757B1
Cited
US6302917B1
Cited
US6821291B2
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.