US5328468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon for blood vessel-dilating catheter
Assignee: Terumo Corp
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Filing: 1992-10-06
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Granted: 1994-07-12
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Expires: 2012-10-06
Abstract
Abstract A balloon for a blood vessel-dilating catheter is fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof. The balloon has a calculated modulus of elasticity of from 70 to 190 kg/mm 2 . When the balloon is fabricated from an alloy of an aromatic polyamide, the alloy may contain up to 50% by weight of an aliphatic polyamide. The balloon of the invention is soft and flexible as well as dimensionally stable. Therefore, the balloon catheter has a high trackability, and may be inserted into the blood vessel without inducing any injury in the inner surface of the blood vessel. The balloon of the invention also has a good blood compatibility.
Inventors
- 👤 Takashi Kaneko
- 👤 Akira Mochizuki
- 👤 Toshinobu Ishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:22
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/04; A61L29/049; A61L29/06; B; B29; B29C; B29C49/00; B29C49/42; B29C49/64; B29C49/6409; B29C49/6418; B29C49/64195
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
A balloon for use with a blood vessel-dilating catheter having an inflation lumen and a second lumen, said catheter having a balloon with a proximal end fixed liquid-tightly to an outer surface of said catheter and a distal end fixed liquid-tightly to the distal end of said catheter, wherein the improvement comprises the balloon being fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof, said aromatic polyamide having a polymerization degree of approximately 50 to 5,000 and an average molecular weight of approximately 3,000 to 100,000, said balloon having a calculated modulus of elasticity of from 70 to 190 kg/mm.
Claim 2
Dependent Claim
105 words
A balloon for use with a blood vessel-dilating catheter having an inflation lumen and a second lumen, said catheter having a balloon with a proximal end fixed liquid-tightly to an outer surface of said catheter and a distal end fixed liquid-tightly to the distal end of said catheter, wherein the improvement comprises the balloon being fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof, said aromatic polyamide having a polymerization degree of approximately 50 to 5,000 and an average molecular weight of approximately 3,000 to 100,000, said balloon having a calculated modulus of elasticity of from 70 to 190 kg/mm.
Claim 3
Dependent Claim
21 words
The balloon according to claim 1 wherein said aromatic polyamide is a polycondensation product of xylylenediamine with an aliphatic dicarboxylic acid.
Claim 4
Dependent Claim
14 words
The balloon according to claim 2 wherein said aliphatic dicarboxylic acid is adipic acid.
Claim 5
Dependent Claim
21 words
The balloon according to claim 1 wherein said aromatic polyamide is a polycondensation product of isophthalic acid and an aliphatic diamine.
Claim 6
Dependent Claim
12 words
The balloon according to claim 4 wherein said aliphatic diamine is hexamethylenediamine.
Claim 7
Dependent Claim
23 words
The balloon according to claim 1 wherein said alloy of the aromatic polyamide contains up to 50% by weight of an aliphatic polyamide.
Claim 8
Dependent Claim
42 words
The balloon according to claim 6 wherein said aliphatic polyamide is at least a member selected from the group consisting of Nylon 6, Nylon 64, Nylon 66, Nylon 610, Nylon 612, Nylon 46, Nylon 9, Nylon 11, Nylon 12, and polyether amide.
Claim 9
Dependent Claim
20 words
The balloon according to claim 1 wherein said balloon has a burst pressure of at least 10 kg/cm 2 .
Claim 10
Dependent Claim
96 words
A blood vessel-dilating catheter comprising an inflation lumen and a second lumen, said catheter having a balloon with a proximal end fixed liquid-tightly to an outer surface of said catheter and a distal end fixed liquid-tightly to the distal end of said catheter, said balloon being fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof, said aromatic polyamide having a polymerization degree of approximately 50 to 5,000 and an average molecular weight of approximately 3,000 to 100,000, said balloon having a calculated modulus of elasticity of from 70 to 190 kg/mm.
Claim 11
Dependent Claim
96 words
A blood vessel-dilating catheter comprising an inflation lumen and a second lumen, said catheter having a balloon with a proximal end fixed liquid-tightly to an outer surface of said catheter and a distal end fixed liquid-tightly to the distal end of said catheter, said balloon being fabricated from a biaxially oriented film of an aromatic polyamide or an alloy thereof, said aromatic polyamide having a polymerization degree of approximately 50 to 5,000 and an average molecular weight of approximately 3,000 to 100,000, said balloon having a calculated modulus of elasticity of from 70 to 190 kg/mm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-07-11 | 1998-01-10 | 1998-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-11 | 2002-01-10 | 2002-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-11 | 2006-01-10 | 2006-07-12 | $7700.00 | Window Closed / Lapsed |