US20080243225A1
Expired / Lapsed
US
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Stent Removal And Repositioning Device And Associated Method
Assignee: Merit Medical Systems Inc
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Filing: 2005-10-24
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Granted: —
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Expires: 2025-10-24
Abstract
Abstract A stent removal device for removing or repositioning a stent from within a lumen is provided. The stent typically comprises at least one element arranged circumferentially about the stent. The stent removal device includes a tube positioned within the lumen proximate to the stent, wherein the tube is capable of receiving at least a portion of the stent. The stent removal device also includes a pusher positioned within the tube capable of engaging the stent and/or the element. The stent removal device further includes a hook positioned within the tube and including a hook member capable of engaging the element such that force applied to the hook causes the stent to purse string.
Inventors
- 👤 Pankaj Satasiya
- 👤 Tony Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:42
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/02; A61F2/04; A61F2/06; A61F2/07; A61F2002/075; A61F2002/91533; A61F2002/9155; A61F2002/91575; A61F2002/9505; A61F2002/9511; A61F2002/9528; A61F2220/00; A61F2220/0025; A61F2220/0075; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0054
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
105 words
1 . A stent removal device for removing or repositioning a stent within a lumen, the stent comprising at least one element arranged circumferentially thereabout, the stent removal device comprising: a tube positioned within the lumen proximate to the stent, wherein the tube is capable of receiving at least a portion of the stent therein; a pusher positioned within the tube and capable of engaging at least one of the stent and the element; and a hook positioned within the tube and comprising a hook member capable of engaging the element such that a force applied to the hook causes the stent to purse string.
Claim 2
Dependent Claim
105 words
1 . A stent removal device for removing or repositioning a stent within a lumen, the stent comprising at least one element arranged circumferentially thereabout, the stent removal device comprising: a tube positioned within the lumen proximate to the stent, wherein the tube is capable of receiving at least a portion of the stent therein; a pusher positioned within the tube and capable of engaging at least one of the stent and the element; and a hook positioned within the tube and comprising a hook member capable of engaging the element such that a force applied to the hook causes the stent to purse string.
Claim 3
Dependent Claim
35 words
2 . The stent removal device according to claim 1 , wherein the tube comprises a funnel-shaped end that is capable of receiving at least at portion of the stent and retaining the stent therein.
Claim 4
Dependent Claim
25 words
3 . The stent removal device according to claim 1 , wherein the pusher comprises a wire including a longitudinal portion and the gripping member.
Claim 5
Dependent Claim
47 words
4 . The stent removal device according to claim 3 , wherein the longitudinal portion is capable of extending through the tube, and wherein the gripping member is capable of engaging the element or an edge of an opening defined in the stent at a proximal end.
Claim 6
Dependent Claim
45 words
5 . The stent removal device according to claim 3 , wherein the longitudinal portion is capable of extending through the tube and within the stent, and wherein the gripping member is capable of engaging the element proximate to a distal end of the stent.
Claim 7
Dependent Claim
25 words
6 . The stent removal device according to claim 1 , wherein the hook comprises a wire including a longitudinal portion and the hook member.
Claim 8
Dependent Claim
34 words
7 . The stent removal device according to claim 6 , wherein the longitudinal member is capable of extending through the tube, and wherein the hook member is capable of partially encircling the element.
Claim 9
Dependent Claim
92 words
8 . A method for removing or repositioning a stent within a lumen, the stent comprising at least one element arranged circumferentially thereabout, the method comprising: positioning a tube within the lumen proximate to the stent; positioning a pusher and a hook within the tube; engaging at least one of the stent and the element with the pusher and the hook; applying a force to the element with the hook such that the hook causes the stent to purse string; and positioning at least a portion of the stent within the tube.
Claim 10
Dependent Claim
92 words
8 . A method for removing or repositioning a stent within a lumen, the stent comprising at least one element arranged circumferentially thereabout, the method comprising: positioning a tube within the lumen proximate to the stent; positioning a pusher and a hook within the tube; engaging at least one of the stent and the element with the pusher and the hook; applying a force to the element with the hook such that the hook causes the stent to purse string; and positioning at least a portion of the stent within the tube.
Claim 11
Dependent Claim
25 words
9 . The method according to claim 8 , further comprising moving the stent within the lumen while the stent is positioned within the tube.
Claim 12
Dependent Claim
26 words
10 . The method according to claim 8 , wherein engaging comprises engaging the element or at least a portion of the stent with the pusher.
Claim 13
Dependent Claim
26 words
11 . The method according to claim 10 , wherein engaging comprises engaging an edge of an opening defined in the stent at a proximal end.
Claim 14
Dependent Claim
18 words
12 . The method according to claim 8 , wherein positioning comprises positioning the pusher within the stent.
Claim 15
Dependent Claim
26 words
13 . The method according to claim 12 , wherein engaging comprises engaging the element proximate to a distal end of the stent with the pusher.
Claim 16
Dependent Claim
31 words
14 . The method according to claim 8 , wherein engaging comprises partially encircling the element with the hook proximate to a distal end or a proximal end of the stent.
Claim 17
Dependent Claim
24 words
15 . The method according to claim 8 , further comprising restraining the stent or the element with the pusher during the applying step.
Claim 18
Dependent Claim
22 words
16 . The method according to claim 15 , wherein restraining comprises applying a distal force to the stent or the element.
Claim 19
Dependent Claim
22 words
17 . The method according to claim 8 , wherein applying comprises applying a proximal force to the element with the hook.
Claim 20
Dependent Claim
108 words
18 . A flexible stent for positioning within a lumen comprising: a scaffolding of struts, the scaffolding configured to define a generally cylindrical member having openings at a distal end and a proximal end and extending longitudinally therebetween; a cover coupled with the scaffolding such that at least a portion of the struts and an area between the struts are covered; and at least one element intertwined about a plurality of struts, through a plurality of openings defined in the cover, and at least partially about the circumference of the scaffolding, wherein the element is capable of being engaged to remove or reposition the stent within the lumen.
Claim 21
Dependent Claim
108 words
18 . A flexible stent for positioning within a lumen comprising: a scaffolding of struts, the scaffolding configured to define a generally cylindrical member having openings at a distal end and a proximal end and extending longitudinally therebetween; a cover coupled with the scaffolding such that at least a portion of the struts and an area between the struts are covered; and at least one element intertwined about a plurality of struts, through a plurality of openings defined in the cover, and at least partially about the circumference of the scaffolding, wherein the element is capable of being engaged to remove or reposition the stent within the lumen.
Claim 22
Dependent Claim
40 words
19 . The stent according to claim 18 , wherein the struts comprise a plurality of interconnected legs arranged circumferentially about the stent and a plurality of connectors interconnecting the legs and extending along a longitudinal axis of the stent.
Claim 23
Dependent Claim
28 words
20 . The stent according to claim 18 , wherein the at least one element extends through each opening in the cover between a pair of adjacent legs.
Claim 24
Dependent Claim
20 words
21 . The stent according to claim 18 , wherein at least one leg protrudes outwardly to define a scale.
Claim 25
Dependent Claim
31 words
22 . The stent according to claim 21 , wherein each scale extends at an acute angle defined between the at least one leg and an outer surface of the stent.
Claim 26
Dependent Claim
14 words
23 . The stent according to claim 21 , wherein each scale extends distally.
Claim 27
Dependent Claim
28 words
24 . The stent according to claim 18 , wherein the at least one element is located proximate to at least one of the proximal and distal ends.
Claim 28
Dependent Claim
20 words
25 . The stent according to claim 18 , wherein each element extends about the entire circumference of the stent.
Claim 29
Dependent Claim
22 words
26 . The stent according to claim 25 , wherein each element comprises a pair of free ends that are joined together.
Claim 30
Dependent Claim
18 words
27 . The stent according to claim 18 , wherein each element lies generally flush with the struts.
Claim 31
Dependent Claim
16 words
28 . The stent according to claim 18 , wherein the cover comprises a polyurethane material.
Claim 32
Dependent Claim
19 words
29 . The stent according to claim 18 , wherein the at least one element comprises a suture material.
Claim 33
Dependent Claim
83 words
30 . A stent removal device for removing or repositioning a stent within a lumen, the stent comprising at least one element arranged circumferentially thereabout, the stent removal device comprising: a pusher positioned within the tube and comprising a gripping member for engaging at least one of the stent and the element; and a hook positioned within the tube and comprising a hook member capable of engaging the element such that a force applied to the hook causes the stent to purse string.
Claim 34
Dependent Claim
83 words
30 . A stent removal device for removing or repositioning a stent within a lumen, the stent comprising at least one element arranged circumferentially thereabout, the stent removal device comprising: a pusher positioned within the tube and comprising a gripping member for engaging at least one of the stent and the element; and a hook positioned within the tube and comprising a hook member capable of engaging the element such that a force applied to the hook causes the stent to purse string.
Claim 35
Dependent Claim
35 words
31 . The stent removal device according to claim 30 , wherein the gripping member is capable of engaging the element or an edge of an opening defined in the stent at a proximal end.
Claim 36
Dependent Claim
29 words
32 . The stent removal device according to claim 30 , wherein the gripping member is capable of engaging the element proximate to a distal end of the stent.
Claim 37
Dependent Claim
25 words
33 . The stent removal device according to claim 30 , wherein the hook comprises a wire including a longitudinal portion and the hook member.
Claim 38
Dependent Claim
34 words
34 . The stent removal device according to claim 33 , wherein the longitudinal member is capable of extending through the tube, and wherein the hook member is capable of partially encircling the element.
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