US6146356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Block copolymer elastomer catheter balloons
Assignee: Boston Scientific Scimed Inc
•
Filing: 1999-05-27
•
Granted: 2000-11-14
•
Expires: 2019-05-27
Abstract
Abstract Balloons for medical devices, particularly balloon angioplasty catheters, which have hybrid compliance curves in which growth rate slows at higher pressures are made from block copolymer thermoplastic elastomers.
Inventors
- 👤 Lixiao Wang
- 👤 Jianhua Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:29
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61L; A61L29/00; A61L29/04; A61L29/06; A61L29/14; A61M25/1029; B; B29; B29C; B29C2949/00; B29C2949/07; B29C2949/079; B29C2949/08; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/6418; B29C49/64195; B29C49/6604; B29C49/6605; B29K; B29K2105/00; B29K2105/25; B29K2105/253; B29K2105/258; B29L; B29L2022/00; B29L2022/02; B29L2022/022; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A balloon for a medical device formed from a length of tubing of a polymer material by radial expansion of the tubing under pressure, the polymer material comprising a polyamide-polyether-polyester, the balloon having a compliance curve characterized by a hybrid compliance curve in which a segment of the curve between 6 atm and 10 atm has a slope corresponding to a growth rate of from about 1.5% to about 5% per atm from a reference diameter at 6 atm and a second segment of the curve between 12 and 16 atm has a growth rate of from about 0.3% to about 1.5% per atm from a reference diameter at 12 atm.
Claim 2
Dependent Claim
111 words
A balloon for a medical device formed from a length of tubing of a polymer material by radial expansion of the tubing under pressure, the polymer material comprising a polyamide-polyether-polyester, the balloon having a compliance curve characterized by a hybrid compliance curve in which a segment of the curve between 6 atm and 10 atm has a slope corresponding to a growth rate of from about 1.5% to about 5% per atm from a reference diameter at 6 atm and a second segment of the curve between 12 and 16 atm has a growth rate of from about 0.3% to about 1.5% per atm from a reference diameter at 12 atm.
Claim 3
Dependent Claim
29 words
A balloon as in claim 1 wherein the polyamide-polyether-polyester has a Shore D hardness in the range of 65-75 and a flexural modulus in the range of 50,000-120,000 psi.
Claim 4
Dependent Claim
26 words
A balloon as in claim 1 wherein said polyamide-polyether-polyester comprises a polyether segment, selected from the group consisting of poly(tetramethylene ether), poly(pentamethylene ether) and poly(hexamethylene ether).
Claim 5
Dependent Claim
14 words
A balloon as in claim 1 having a wall strength greater than 20,000 psi.
Claim 6
Dependent Claim
28 words
A balloon as in claim 1 having a molded diameter of between 1.5 mm and 4.0 mm, the balloon having a burst pressure of at least 12 atm.
Claim 7
Dependent Claim
33 words
A dilation catheter having an elongated tubular body, a balloon mounted on a distal end thereof and means for inflation of the balloon, wherein the balloon is a balloon as in claim 1.
Claim 8
Dependent Claim
50 words
A balloon for a medical device characterized by a wall strength of at least 18,000 psi, a distension over the range of 88-235 psi of at least 12% and a non-linear compliance curve comprising initial and final segments, the initial segment having a growth rate greater than the final segment.
Claim 9
Dependent Claim
50 words
A balloon for a medical device characterized by a wall strength of at least 18,000 psi, a distension over the range of 88-235 psi of at least 12% and a non-linear compliance curve comprising initial and final segments, the initial segment having a growth rate greater than the final segment.
Claim 10
Dependent Claim
15 words
A balloon as in claim 7 wherein said wall strength is at least 20,000 psi.
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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) | 2003-11-14 | 2004-05-15 | 2004-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-14 | 2008-05-15 | 2008-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-14 | 2012-05-15 | 2012-11-14 | $7700.00 | Window Closed / Lapsed |