US6136011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stent delivery system and method of use
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1998-07-14
•
Granted: 2000-10-24
•
Expires: 2018-07-14
Abstract
Abstract A stent deployment system and method wherein a two balloon catheter is used to expand the stent within a body lumen. The balloons are concentrically arranged about a dual lumen catheter wherein the inner balloon is smaller than the outer balloon. By first inflating the smaller balloon to expand only the center section of the stent, the stent undergoes substantially all of its longitudinal contraction before the ends make contact with the lumen tissue upon inflation of the larger outer balloon.
Inventors
- 👤 James W. Stambaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:39
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958; A61M; A61M25/00; A61M25/10; A61M25/1011; A61M2025/1013; A61M25/104
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
A stent delivery catheter assembly for an expandable stent, comprising: a multi-lumen catheter dimensioned to be advanceable through vasculature to a deployment site; an inner inflation balloon, having a first preselected inflated length and diameter disposed about said catheter and in fluid communication with a first lumen formed in said catheter; an outer inflation balloon, having a second preselected inflated length and diameter disposed about said catheter, wherein the inflated length of said outer balloon is greater than the inflated length of said inner balloon, wherein the inflated diameter of said outer balloon is no greater than said inflated diameter of said inner balloon and wherein said outer balloon is positioned to centrally contain said inner balloon; and an expandable stent mounted on the outer inflation balloon.
Claim 2
Dependent Claim
127 words
A stent delivery catheter assembly for an expandable stent, comprising: a multi-lumen catheter dimensioned to be advanceable through vasculature to a deployment site; an inner inflation balloon, having a first preselected inflated length and diameter disposed about said catheter and in fluid communication with a first lumen formed in said catheter; an outer inflation balloon, having a second preselected inflated length and diameter disposed about said catheter, wherein the inflated length of said outer balloon is greater than the inflated length of said inner balloon, wherein the inflated diameter of said outer balloon is no greater than said inflated diameter of said inner balloon and wherein said outer balloon is positioned to centrally contain said inner balloon; and an expandable stent mounted on the outer inflation balloon.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1, wherein said inner balloon is about 70% as long as said outer balloon.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1, wherein said inner balloon is in the range of 50% to 90% as long as said outer balloon.
Claim 5
Dependent Claim
23 words
The apparatus of claim 1, wherein the inflated diameter of said outer balloon is less than the inflated diameter of said inner balloon.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1, wherein said inflated length of said outer balloon is substantially equal to that of a stent to be deployed.
Claim 7
Dependent Claim
13 words
The apparatus of claim 1, wherein said balloons are bonded to said catheter.
Claim 8
Independent Claim
68 words
A method of deploying an expandable stent within a body lumen, comprising the steps of: crimping a stent on to an outer inflation balloon containing a smaller centrally located, inner inflation balloon which are disposed about a catheter; advancing said stent and balloon carrying catheter to a deployment site; inflating said inner balloon to partially expand said stent; and inflating said outer balloon to fully expand said stent.
Claim 9
Independent Claim
68 words
A method of deploying an expandable stent within a body lumen, comprising the steps of: crimping a stent on to an outer inflation balloon containing a smaller centrally located, inner inflation balloon which are disposed about a catheter; advancing said stent and balloon carrying catheter to a deployment site; inflating said inner balloon to partially expand said stent; and inflating said outer balloon to fully expand said stent.
Claim 10
Dependent Claim
20 words
The method of claim 7, further comprising the step of deflating said inner balloon prior to inflating said outer balloon.
Claim 11
Dependent Claim
17 words
The method of claim 7, wherein said inner balloon remains inflated as said outer balloon is inflated.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-24 | 2004-04-24 | 2004-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-24 | 2008-04-24 | 2008-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-24 | 2012-04-24 | 2012-10-24 | $7700.00 | Window Closed / Lapsed |