Patent US5833707A successfully refreshed from Google Patents.
US5833707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable stent and method of deployment
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1995-07-05
•
Granted: 1998-11-10
•
Expires: 2015-07-05
Abstract
Abstract An apparatus and method for temporarily implanting an intraluminal stent in a body lumen and its subsequent removal. A stent is formed from a thin sheet that has been wound around itself into a generally cylindrical roll. The stent has a deployed configuration with a deployed diameter generally the size of the lumen diameter. The stent has a delivery configuration, formed by winding the stent more tightly than the deployed configuration, with the delivery diameter smaller than the deployed diameter in order to allow low profile delivery into the body lumen. The stent will transform from the delivery configuration to the deployed configuration when exposed to body heat. The stent can be deployed by an intraluminal delivery catheter that secures the stent in its delivery configuration during intraluminal delivery of the stent. The stent can be removed from the body lumen via a removal catheter that coils the stent into a sheath at the end of the removal catheter.
Inventors
- 👤 John McIntyre
- 👤 Geoffrey A. Orth
- 👤 Peter S. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/962; A61F2/82; A61F2/92; A61F2002/9505; A61F2002/9511; A61F2210/00; A61F2210/0014; A61F2210/0019; A61F2220/00; A61F2220/0025; A61F2220/0075
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
80 words
A removable intraluminal stent for implantation within a body lumen, the stent having a delivery configuration and a deployed configuration, comprising: a generally rectangular sheet, said sheet having end edges and side edges, said sheet being wound into a generally cylindrical shape having a distal end and a proximal end, with the side edges overlapping each other in the delivery configuration, said sheet being continuous and endothelialization-resistant wherein at least one of said side edges of said sheet is tapered.
Claim 2
Dependent Claim
80 words
A removable intraluminal stent for implantation within a body lumen, the stent having a delivery configuration and a deployed configuration, comprising: a generally rectangular sheet, said sheet having end edges and side edges, said sheet being wound into a generally cylindrical shape having a distal end and a proximal end, with the side edges overlapping each other in the delivery configuration, said sheet being continuous and endothelialization-resistant wherein at least one of said side edges of said sheet is tapered.
Claim 3
Dependent Claim
18 words
The stent of claim 1, wherein at least one of said side edges of said sheet is tapered.
Claim 4
Dependent Claim
18 words
The stent of claim 2, wherein said sheet has a uniform thickness of approximately 0.002 inches or less.
Claim 5
Dependent Claim
15 words
The stent of claim 1, wherein at least one of said side edges is feathered.
Claim 6
Dependent Claim
15 words
The stent of claim 1, wherein said sheet further comprises one or more support ribs.
Claim 7
Dependent Claim
20 words
The stent of claim 1, wherein said sheet has an endothelialization-resistant coating on at least a portion of said sheet.
Claim 8
Dependent Claim
14 words
The stent of claim 1, wherein the stent is formed from a shape-memory alloy.
Claim 9
Dependent Claim
11 words
The stent of claim 7, wherein said shape-memory alloy includes NiTi.
Claim 10
Dependent Claim
120 words
A removable intraluminal stent for implantation within a body lumen, the stent having a deployed configuration and a removal configuration, comprising; a generally cylindrical core, said core comprising a generally rectangular sheet, said sheet having end edges and side edges, said sheet being wound into a generally cylindrical shape having a distal end and a proximal end, with the side edges overlapping each other in the delivery configuration; and wherein said core has an attachment point at which an application of force will bias the stent toward its removal configuration; and a filament secured to the stent at said attachment point whereby pulling on said filament applies force to said attachment point, thereby biasing the stent toward its removal configuration.
Claim 11
Dependent Claim
120 words
A removable intraluminal stent for implantation within a body lumen, the stent having a deployed configuration and a removal configuration, comprising; a generally cylindrical core, said core comprising a generally rectangular sheet, said sheet having end edges and side edges, said sheet being wound into a generally cylindrical shape having a distal end and a proximal end, with the side edges overlapping each other in the delivery configuration; and wherein said core has an attachment point at which an application of force will bias the stent toward its removal configuration; and a filament secured to the stent at said attachment point whereby pulling on said filament applies force to said attachment point, thereby biasing the stent toward its removal configuration.
Claim 12
Dependent Claim
28 words
The removable intraluminal stent of claim 9, wherein said sheet has an unrolled configuration and said sheet is formed from a shape-memory alloy that remembers the unrolled configuration.
Claim 13
Dependent Claim
13 words
The removable intraluminal stent of claim 10, wherein said shape-memory alloy includes NiTi.
Claim 14
Dependent Claim
20 words
The removable intraluminal stent of claim 9, wherein in the removal configuration said core has a generally telescoping cylindrical shape.
References Cited (Backward Citations)
US4740207A
Cited
US4762128A
Cited
US5037427A
Cited
US5306286A
Cited
US5059211A
Cited
US4969890A
Cited
US5242451A
Cited
US5192307A
Cited
US4877030A
Cited
US5078726A
Cited
US5100429A
Cited
US5147385A
Cited
US5089006A
Cited
US5065751A
Cited
US5312339A
Cited
US5354309A
Cited
US5192297A
Cited
US5306294A
Cited
US5383926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-09 | 2002-05-11 | 2002-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-09 | 2006-05-11 | 2006-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-09 | 2010-05-11 | 2010-11-10 | $7700.00 | Window Closed / Lapsed |