US6468299B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent delivery catheter with bumpers for improved retention of balloon expandable stents
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 2001-06-07
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Granted: 2002-10-22
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Expires: 2021-06-07
Abstract
Abstract An improved balloon catheter which includes bumpers located adjacent to the proximal and distal ends of the catheter balloon. The bumpers form a recessed pocket into which a stent crimped onto the catheter balloon is mounted. The recessed pocket formed by the bumpers securely retains the stent on the balloon and minimizes undesired contact between the stent and arterial walls and lesions during advancement of the stent within a patient's vasculature.
Inventors
- 👤 Richard S. Stack
- 👤 Denise Ching
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:34
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
106 words
A catheter for the delivery of a stent comprising: an elongated catheter shaft having a proximal end and a distal end, with an inflation lumen extending therebetween; an expandable member located proximal to the distal end of the catheter shaft, which is in fluid communication with the inflation lumen and has a proximal end and a distal end; and a first bumper and a second bumper positioned adjacent to the proximal end and distal end of the expandable member respectively, the bumpers being integrally formed on the catheter shaft, wherein the area between the first and second bumpers form a pocket for receipt of a stent.
Claim 2
Dependent Claim
106 words
A catheter for the delivery of a stent comprising: an elongated catheter shaft having a proximal end and a distal end, with an inflation lumen extending therebetween; an expandable member located proximal to the distal end of the catheter shaft, which is in fluid communication with the inflation lumen and has a proximal end and a distal end; and a first bumper and a second bumper positioned adjacent to the proximal end and distal end of the expandable member respectively, the bumpers being integrally formed on the catheter shaft, wherein the area between the first and second bumpers form a pocket for receipt of a stent.
Claim 3
Dependent Claim
17 words
The delivery catheter of claim 1 , wherein the bumpers are made from a soft, pliable material.
Claim 4
Dependent Claim
17 words
The delivery catheter of claim 2 , wherein the material used to form the bumpers is polyamide.
Claim 5
Dependent Claim
17 words
The delivery catheter of claim 2 , wherein the material used to form the bumpers is polyurethane.
Claim 6
Dependent Claim
33 words
The delivery catheter of claim 1 , wherein the respective first and second bumpers have an outside diameter which is greater than the outside diameter of a stent crimped over the expandable member.
Claim 7
Dependent Claim
12 words
The delivery catheter of claim 1 , wherein the bumpers are cylindrical.
Claim 8
Dependent Claim
15 words
The delivery catheter of claim 1 , wherein the expandable member is a dilatation balloon.
Claim 9
Dependent Claim
20 words
The delivery catheter of claim 1 , wherein the respective first and second bumpers are made from an elastomeric material.
Claim 10
Dependent Claim
13 words
The delivery catheter of claim 8 , wherein the elastomeric material is polyurethane.
Claim 11
Dependent Claim
13 words
The delivery catheter of claim 8 , wherein the elastomeric material is polyamide.
Claim 12
Dependent Claim
50 words
The delivery catheter of claim 1 , wherein the expandable member has a sleeve-like shape with a first end and a second end, the first end of the expandable member being attached to the first bumper and the second end of the expandable member being attached to the second bumper.
Claim 13
Dependent Claim
28 words
The delivery catheter of claim 11 , wherein each of the first and second bumpers includes an opening for receiving the end of the expandable member for attachment.
Claim 14
Dependent Claim
21 words
The delivery catheter of claim 12 , wherein the openings in each of the first and second bumpers are radial slits.
References Cited (Backward Citations)
US5409495A
Cited
US6068634A
Cited
US6106530A
Cited
US5810871A
Cited
US6174316B1
Cited
US6168617B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-10-21 | 2006-04-22 | 2006-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-21 | 2010-04-22 | 2010-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-21 | 2014-04-22 | 2014-10-22 | $7700.00 | Window Closed / Lapsed |