US6024722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polyimide balloon catheter construction
Assignee: Boston Scientific Scimed Inc
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Filing: 1994-12-27
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Granted: 2000-02-15
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Expires: 2014-12-27
Abstract
Abstract The present invention discloses the incorporation of thermoplastic polyimide into various parts of balloon catheters such as catheter shafts and balloons. Such catheter constructions may be integral or unitary in which the shaft of a portion thereof and balloon are manufactured as a single unit or the construction may be comprised of a separate shaft to which a balloon is attached as by adhesive or other bonding.
Inventors
- 👤 Bruce H. Rau
- 👤 Susan M. Shoemaker
- 👤 Paul J. Buscemi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:49
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1029; A61M25/0043; A61M25/0045; A61M25/1036; A61M2025/1043; A61M2025/1075; A61M25/0009; A61M25/005; A61M25/104
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
57 words
An improved balloon catheter comprising a shaft portion having a proximal end and a distal end, and a balloon portion located at the distal end of said shaft portion, wherein the improvement comprises said shaft portion of the balloon catheter being comprised of thermoplastic polyimide having a melting point in the range of about 340° C.-410° C.
Claim 2
Dependent Claim
57 words
An improved balloon catheter comprising a shaft portion having a proximal end and a distal end, and a balloon portion located at the distal end of said shaft portion, wherein the improvement comprises said shaft portion of the balloon catheter being comprised of thermoplastic polyimide having a melting point in the range of about 340° C.-410° C.
Claim 3
Dependent Claim
19 words
The balloon catheter of claim 1 in which the balloon is comprised at least in part of thermoplastic polyimide.
Claim 4
Dependent Claim
64 words
An improved balloon catheter comprising a shaft portion having a proximal end and a distal end, and a balloon portion located at the distal end of said shaft portion, wherein the improvement comprises at least a portion of the shaft being comprised of thermoplastic polyimide having a melting point in the range of about 340° C. to about 410° C. coextruded with another material.
Claim 5
Dependent Claim
64 words
An improved balloon catheter comprising a shaft portion having a proximal end and a distal end, and a balloon portion located at the distal end of said shaft portion, wherein the improvement comprises at least a portion of the shaft being comprised of thermoplastic polyimide having a melting point in the range of about 340° C. to about 410° C. coextruded with another material.
Claim 6
Dependent Claim
72 words
An improved balloon catheter comprising a shaft portion having a proximal end and a distal end, and a balloon portion located at the distal end of said shaft portion, wherein the improvement comprises the balloon portion being comprised of an innermost balloon layer and at least one additional layer, and wherein at least two of said layers are comprised of polyimide, and one of said polyimide layers is comprised of thermoplastic polyimide.
Claim 7
Dependent Claim
72 words
An improved balloon catheter comprising a shaft portion having a proximal end and a distal end, and a balloon portion located at the distal end of said shaft portion, wherein the improvement comprises the balloon portion being comprised of an innermost balloon layer and at least one additional layer, and wherein at least two of said layers are comprised of polyimide, and one of said polyimide layers is comprised of thermoplastic polyimide.
Claim 8
Dependent Claim
16 words
The balloon catheter of claim 4 in which the inner most balloon layer is thermoplastic polyimide.
Claim 9
Dependent Claim
52 words
A balloon catheter, said balloon catheter having a shaft comprised at least in part of thermoplastic polyimide having a melting point between about 340° C.-410° C., the balloon portion being comprised of multiple layers, one of said layers being an innermost layer, wherein at least one of said layers is thermoplastic polyimide.
Claim 10
Dependent Claim
52 words
A balloon catheter, said balloon catheter having a shaft comprised at least in part of thermoplastic polyimide having a melting point between about 340° C.-410° C., the balloon portion being comprised of multiple layers, one of said layers being an innermost layer, wherein at least one of said layers is thermoplastic polyimide.
Claim 11
Dependent Claim
58 words
A balloon catheter, said balloon catheter having a shaft comprised at least in part of thermoplastic polyimide having a melting point between about 340° C.-410° C., the balloon portion being comprised of multiple layers, one of said layers being an innermost layer, wherein one of said layers is thermoplastic polyimide, and the other said layer is thermoset polyimide.
Claim 12
Dependent Claim
58 words
A balloon catheter, said balloon catheter having a shaft comprised at least in part of thermoplastic polyimide having a melting point between about 340° C.-410° C., the balloon portion being comprised of multiple layers, one of said layers being an innermost layer, wherein one of said layers is thermoplastic polyimide, and the other said layer is thermoset polyimide.
Claim 13
Dependent Claim
13 words
The balloon portion of claim 7 wherein the innermost layer is thermoplastic polyimide.
Claim 14
Dependent Claim
29 words
A catheter shaft comprised at least in part of thermoplastic polyimide having a melting point in the range of 340° C.-410° C., said shaft further comprising a reinforcement material.
Claim 15
Dependent Claim
29 words
A catheter shaft comprised at least in part of thermoplastic polyimide having a melting point in the range of 340° C.-410° C., said shaft further comprising a reinforcement material.
Claim 16
Dependent Claim
26 words
A catheter shaft comprised at least in part of thermoplastic polyimide, said shaft further comprising a reinforcement material, and wherein said reinforcement material is a fiber.
Claim 17
Dependent Claim
26 words
A catheter shaft comprised at least in part of thermoplastic polyimide, said shaft further comprising a reinforcement material, and wherein said reinforcement material is a fiber.
Claim 18
Dependent Claim
32 words
A catheter shaft comprised at least in part of thermoplastic polyimide, said shaft having an inner diameter covered with a fluoropolymer, said shaft further comprising a reinforcement material in the polyimide material.
Claim 19
Dependent Claim
32 words
A catheter shaft comprised at least in part of thermoplastic polyimide, said shaft having an inner diameter covered with a fluoropolymer, said shaft further comprising a reinforcement material in the polyimide material.
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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) | 2003-02-14 | 2003-08-16 | 2004-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-14 | 2007-08-16 | 2008-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-14 | 2011-08-16 | 2012-02-15 | $7700.00 | Window Closed / Lapsed |