Patent US3836851A successfully refreshed from Google Patents.
US6488688B2
Expired / Lapsed
US
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Stent deploying catheter system and balloon catheter
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1999-04-21
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Granted: 2002-12-03
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Expires: 2019-04-21
Abstract
Abstract An intravascular catheter system for properly implanting a stent in a body lumen generally comprising a catheter having an elongated shaft with an inflatable balloon formed of compliant material and a stent mounted on the working length of the balloon. The balloon material is compliant within the working range of the balloon to provide substantial radial expansion. The wingless radially expansive balloon expands in a uniform manner, thereby producing uniform expansion and implantation of the stent. Another embodiment is directed to a balloon catheter having a semi-compliant balloon formed at least in part of a block copolymer.
Inventors
- 👤 Florencia Lim
- 👤 Debashis Dutta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/04; A61L29/049; A61F; A61F2/00; A61F2/95; A61F2/958; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1029; A61M29/00; A61M29/02; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/09; B29C48/16; B29C48/18; B29C48/21; B29C55/00; B29C55/22; B29C55/24; A61M25/104; B29C48/13; B29K; B29K2075/00; B29L; B29L2022/00; B29L2022/02; B29L2022/022; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
52 words
A balloon catheter, comprising an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a radially semi-compliant balloon on the shaft, formed at least in part of a polyurethane block copolymer, and having a radial compliance of about 0.025 mm/atm to about 0.045 mm/atm.
Claim 2
Dependent Claim
52 words
A balloon catheter, comprising an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a radially semi-compliant balloon on the shaft, formed at least in part of a polyurethane block copolymer, and having a radial compliance of about 0.025 mm/atm to about 0.045 mm/atm.
Claim 3
Dependent Claim
33 words
The balloon catheter of claim 1 wherein the balloon radial compliance of about 0.025 mm/atm to about 0.045 mm/atm is within an inflation pressure range of about 6 atm to about 19 atm.
Claim 4
Dependent Claim
35 words
The balloon catheter of claim 1 , wherein the balloon has a radial compliance of about 0.025 mm/atm to about 0.04 mm/atm within an inflation pressure range of about 6 atm to about 19 atm.
Claim 5
Dependent Claim
34 words
The balloon catheter of claim 1 wherein the balloon has a radial compliance of about 0.025 mm/atm to about 0.03 mm/atm within an inflation pressure range of about 10 atm to about 19 atm.
Claim 6
Dependent Claim
27 words
The balloon catheter of claim 1 wherein the balloon has a percent radial expansion of less than about 4% at an inflation pressure of about 150 psi.
Claim 7
Dependent Claim
28 words
The balloon catheter of claim 1 wherein the balloon has a percent radial expansion of about 1.5% to about 4% at an inflation pressure of about 150 psi.
Claim 8
Dependent Claim
12 words
The balloon catheter of claim 1 wherein the balloon is axially noncompliant.
Claim 9
Dependent Claim
23 words
The balloon catheter of claim 1 wherein the polyurethane block copolymer has a flexural modulus of about 150,000 psi to about 300,000 psi.
Claim 10
Dependent Claim
24 words
The balloon catheter of claim 1 wherein the polyurethane block copolymer has a hardness of about 55 Shore D to about 75 Shore D.
Claim 11
Dependent Claim
22 words
The balloon catheter of claim 1 wherein the polyurethane block copolymer has a Shore durometer hardness of 55 D to 65 D.
Claim 12
Dependent Claim
62 words
The balloon catheter of claim 7 wherein the radially semi-compliant and axially noncompliant balloon has a radial compliance of less than about 0.045 mm/atm within an inflation pressure range of about 6 atm to about 19 atm, and an axial compliance of about 0.1 mm/atm to about 0.25 mm/atm within an inflation pressure range of about 6 atm to about 14 atm.
Claim 13
Dependent Claim
17 words
The balloon catheter of claim 1 wherein the balloon is formed of a single polyurethane block copolymer.
Claim 14
Dependent Claim
18 words
The balloon catheter of claim 1 wherein the balloon has a rupture pressure of at least 300 psi.
Claim 15
Dependent Claim
33 words
The balloon catheter of claim 1 wherein the balloon has a compliance over a working pressure of the balloon which is within a lower half of the 0.025 mm/atm to 0.045 mm/atm range.
Claim 16
Dependent Claim
39 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) an axially noncompliant balloon on the shaft, formed at least in part of a block copolymer.
Claim 17
Dependent Claim
39 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) an axially noncompliant balloon on the shaft, formed at least in part of a block copolymer.
Claim 18
Dependent Claim
34 words
The balloon catheter of claim 15 wherein the balloon has an axial compliance of about 0.1 mm/atm to about 0.25 mm/atm within an inflation pressure range of about 6 atm to about 14 atm.
Claim 19
Dependent Claim
35 words
The balloon catheter of claim 15 wherein the balloon has a length which increases by less than about 5% to about 15% within an inflation pressure range of about 6 atm to about 14 atm.
Claim 20
Dependent Claim
15 words
The balloon catheter of claim 15 wherein the block copolymer comprises a polyurethane block copolymer.
Claim 21
Dependent Claim
42 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a radially and axially noncompliant balloon on the shaft, formed at least in part of a polyurethane block copolymer.
Claim 22
Dependent Claim
42 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a radially and axially noncompliant balloon on the shaft, formed at least in part of a polyurethane block copolymer.
Claim 23
Dependent Claim
50 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a radially semi-compliant balloon on the shaft, formed of at least in part of a polyurethane block copolymer which is not blended with a different polyurethane polymer.
Claim 24
Dependent Claim
50 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a radially semi-compliant balloon on the shaft, formed of at least in part of a polyurethane block copolymer which is not blended with a different polyurethane polymer.
Claim 25
Dependent Claim
52 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a balloon on the shaft, formed of an extruded tube comprising a polyurethane block copolymer, the extruded tube being processed after extrusion so that the balloon is radially semi-compliant.
Claim 26
Dependent Claim
52 words
A balloon catheter, comprising a) an elongated shaft having a proximal end, a distal end, and at least one lumen therein; and b) a balloon on the shaft, formed of an extruded tube comprising a polyurethane block copolymer, the extruded tube being processed after extrusion so that the balloon is radially semi-compliant.
Claim 27
Independent Claim
86 words
A method of making a semi-compliant balloon for a catheter, comprising a) extruding a tubular product having a first outer diameter and a first inner diameter, formed at least in part of a block copolymer; b) heating the tubular product at a first elevated temperature, and radially expanding the tubular product to a second outer diameter; c) heating the expanded tubular product at a second elevated temperature not less than the first elevated temperature; and d) cooling the expanded tubular product to form the semi-compliant balloon.
Claim 28
Independent Claim
86 words
A method of making a semi-compliant balloon for a catheter, comprising a) extruding a tubular product having a first outer diameter and a first inner diameter, formed at least in part of a block copolymer; b) heating the tubular product at a first elevated temperature, and radially expanding the tubular product to a second outer diameter; c) heating the expanded tubular product at a second elevated temperature not less than the first elevated temperature; and d) cooling the expanded tubular product to form the semi-compliant balloon.
Claim 29
Independent Claim
63 words
The method of claims 22 wherein the semi-compliant balloon has a percent radial expansion of less than about 4% at an inflation pressure of about 1 50 psi, and heating the tubular product comprises displacing a heating member along a length of the tubular product at a first rate to apply heat to portions of the tubular product adjacent to the heating member.
Claim 30
Dependent Claim
41 words
The method of claim 22 wherein heating the expanded tubular product comprises displacing a heating member along a length of the tubular product at a second rate to apply heat to portions of the tubular product adjacent to the heating member.
Claim 31
Dependent Claim
15 words
The method of claim 24 wherein the first rate is greater than the second rate.
Claim 32
Dependent Claim
27 words
The method of claim 22 wherein the balloon has a percent radial expansion of about 1.5% to about 4% at an inflation pressure of about 150 psi.
Claim 33
Dependent Claim
30 words
The method of claim 22 wherein the balloon has a compliance of less than about 0.045 mm/atm within an inflation pressure range of about 6 atm to about 19 atm.
Claim 34
Dependent Claim
31 words
The method of claim 22 wherein the balloon has a compliance of about 0.025 mm/atm to about 0.03 within an inflation pressure range of about 10 atm to about 19 atm.
Claim 35
Dependent Claim
17 words
The method of claim 22 wherein the first elevated temperature is about 90 to about 105° C.
Claim 36
Dependent Claim
17 words
The method of claim 22 wherein the second elevated temperature is about 110 to about 140° C.
Claim 37
Dependent Claim
33 words
The method of claim 22 wherein the tubular product is radially expanded to the second outer diameter which is about 7 to about 8 times the first inner diameter of the tubular product.
Claim 38
Dependent Claim
11 words
The method of claim 22 including axially elongating the tubular product.
Claim 39
Dependent Claim
36 words
The method of claim 22 wherein the tubular product is expanded by subjecting the tubular product to an expansion pressure, and the expanded tubular product is heated at the second elevated temperature at the expansion pressure.
Claim 40
Dependent Claim
16 words
The method of claim 33 wherein the expanded tubular product is cooled at the expansion pressure.
Claim 41
Dependent Claim
14 words
The method of claim 22 wherein the block copolymer comprises a polyurethane block copolymer.
Claim 42
Dependent Claim
12 words
The method of claim 22 wherein the semi-compliant balloon is axially noncompliant.
Claim 43
Dependent Claim
15 words
The method of claim 22 including after (a) and before (b) heating the tubular product.
Claim 44
Dependent Claim
20 words
The method of claim 37 wherein after (a) and before (b) the tubular product is heated at about 40° C.
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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) | 2005-12-02 | 2006-06-03 | 2006-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-12-02 | 2010-06-03 | 2010-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-12-02 | 2014-06-03 | 2014-12-03 | $7700.00 | Window Closed / Lapsed |