US5879369A
Expired / Lapsed
US
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Catheter balloon and balloon catheter
Assignee: Terumo Corp
•
Filing: 1996-10-10
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Granted: 1999-03-09
•
Expires: 2016-10-10
Abstract
Abstract A catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers having a elongation at break close to that of said high-strength polymer and being more flexible than said high-strength polymer, and has a wall thickness of 25 μm or thinner. A balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers more flexible than said high-strength polymer, and has a wall thickness of 25 μm or thinner, said covering layer or covering layers together bearing 10% or more part of the bursting stress of the balloon. A balloon catheter, especially blood vessel dilating catheter, equipped with any of the above balloons.
Inventors
- 👤 Toshinobu Ishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:10
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61M25/1029; A61M25/104; B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/4823; B29C55/00; B29C55/22; B29C55/26; B32; B32B; B32B27/00; A61M2025/1031; A61M2025/1043; A61M2025/1075; A61M2025/1084; B29C2049/4825; B29C2049/4838; B29C2949/00; B29C2949/07; B29C2949/079; B29C2949/08; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C49/08; B29C49/10; B29C49/14; B29K; B29K2105/00; B29K2105/25; B29K2105/253; B29K2105/258; B29L; B29L2031/00; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
97 words
A catheter balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than said high-strength polymer, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 2
Dependent Claim
97 words
A catheter balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than said high-strength polymer, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 3
Dependent Claim
19 words
The catheter balloon of claim 1 wherein said covering layer is formed over both surfaces of said base layer.
Claim 4
Dependent Claim
17 words
The catheter balloon of claim 1 which is biaxially stretched in the axial direction and circumferential direction.
Claim 5
Dependent Claim
23 words
The catheter balloon of claim 1 wherein said one or more flexible polymers are of the same polymer group as said high-strength polymer.
Claim 6
Dependent Claim
21 words
The catheter balloon of claim 4 wherein said high-strength polymer is polyethylene terephthalate and said flexible polymer is a polyester elastomer.
Claim 7
Dependent Claim
21 words
The catheter balloon of claim 4 wherein said high-strength polymer is a polyamide and said flexible polymer is a polyamide elastomer.
Claim 8
Dependent Claim
25 words
The catheter balloon of claim 1 wherein the difference of tensile fracturing strength between said high-strength polymer and said flexible polymer is 30% or smaller.
Claim 9
Dependent Claim
18 words
The catheter balloon of claim 1 wherein said base layer is inside and said covering layer is outside.
Claim 10
Dependent Claim
89 words
A catheter balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers more flexible than said high-strength polymer, and said covering layer or covering layers together bearing 10% or more part of the bursting stress of the balloon, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 11
Dependent Claim
89 words
A catheter balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers more flexible than said high-strength polymer, and said covering layer or covering layers together bearing 10% or more part of the bursting stress of the balloon, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 12
Dependent Claim
26 words
The catheter balloon of claim 9 wherein said covering layer or covering layers together bear 20% or more part of the bursting stress of the balloon.
Claim 13
Dependent Claim
19 words
The catheter balloon of claim 9 wherein said covering layer is formed over both surfaces of said base layer.
Claim 14
Dependent Claim
17 words
The catheter balloon of claim 9 which is biaxially stretched in the axial direction and circumferential direction.
Claim 15
Dependent Claim
23 words
The catheter balloon of claim 9 wherein said one or more flexible polymers are of the same polymer group as said high-strength polymer.
Claim 16
Dependent Claim
21 words
The catheter balloon of claim 9 wherein said high-strength polymer is polyethylene terephthalate and said flexible polymer is a polyester elastomer.
Claim 17
Dependent Claim
21 words
The catheter balloon of claim 9 wherein said high-strength polymer is a polyamide and said flexible polymer is a polyamide elastomer.
Claim 18
Dependent Claim
26 words
The catheter balloon of claim 9 wherein the difference of a tensile fracturing strength between said high-strength polymer and said flexible polymer is 30% or smaller.
Claim 19
Dependent Claim
26 words
The catheter balloon of claim 9 wherein the difference of a elongation at break between said high-strength polymer and said flexible polymer is 30% or smaller.
Claim 20
Dependent Claim
18 words
The catheter balloon of claim 9 wherein said base layer is inside and said covering layer is outside.
Claim 21
Dependent Claim
106 words
A catheter balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer, a first covering layer formed over the outside surface of said base layer of an flexible polymer having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than the high-strength polymer, and a second covering layer formed over the outside surface of said first covering layer of another flexible polymer more flexible than said flexible polymer for said first covering layer.
Claim 22
Dependent Claim
106 words
A catheter balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer, a first covering layer formed over the outside surface of said base layer of an flexible polymer having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than the high-strength polymer, and a second covering layer formed over the outside surface of said first covering layer of another flexible polymer more flexible than said flexible polymer for said first covering layer.
Claim 23
Dependent Claim
19 words
The catheter balloon of claim 19 wherein said cylindrical portion has a wall thickness of 25 μm or thinner.
Claim 24
Dependent Claim
23 words
The catheter balloon of claim 19 wherein said first covering layer bears 10% or more part of the bursting stress of the balloon.
Claim 25
Dependent Claim
23 words
The catheter balloon of claim 19 wherein said first covering layer bears 20% or more part of the bursting stress of the balloon.
Claim 26
Dependent Claim
17 words
The catheter balloon of claim 19 which is biaxially stretched in the axial direction and circumferential direction.
Claim 27
Dependent Claim
23 words
The catheter balloon of claim 19 wherein said one or more flexible polymers are of the same polymer group as said high-strength polymer.
Claim 28
Dependent Claim
21 words
The catheter balloon of claim 19 wherein said high-strength polymer is polyethylene terephthalate and said flexible polymer is a polyester elastomer.
Claim 29
Dependent Claim
21 words
The catheter balloon of claim 19 wherein said high-strength polymer is a polyamide and said flexible polymer is a polyamide elastomer.
Claim 30
Dependent Claim
26 words
The catheter balloon of claim 19 wherein the difference of a tensile fracturing strength between said high-strength polymer and said flexible polymer is 30% or smaller.
Claim 31
Dependent Claim
120 words
A balloon catheter comprises of a tubular catheter body and a balloon attached to a distal end portion of said tubular catheter body, and said balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than said high-strength polymer, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 32
Dependent Claim
120 words
A balloon catheter comprises of a tubular catheter body and a balloon attached to a distal end portion of said tubular catheter body, and said balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than said high-strength polymer, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 33
Dependent Claim
25 words
The balloon catheter of claim 28 wherein the difference of tensile fracturing strength between said high-strength polymer and said flexible polymer is 30% or smaller.
Claim 34
Dependent Claim
96 words
The balloon catheter of claim 28 wherein said tubular catheter body comprising an inner tube with a first lumen open at a distal end and an outer tube which forms a second lumen between its inside surface and an outside surface of said inner tube and have a distal end retreated from the distal end of said inner tube by a predetermined distance, and said balloon whose front and rear end portions are attached to a distal end portions of said inner and outer tubes, respectively, and whose an inside space connects with said second lumen.
Claim 35
Dependent Claim
112 words
A balloon catheter comprises of a tubular catheter body and a balloon attached to a distal end portion of said tubular catheter body, and said balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers more flexible than said high-strength polymer, and said covering layer or covering layers together bearing 10% or more part of the bursting stress of the balloon, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 36
Dependent Claim
112 words
A balloon catheter comprises of a tubular catheter body and a balloon attached to a distal end portion of said tubular catheter body, and said balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer and one or more covering layers formed over at least one surface of said base layer of the same flexible polymer or different flexible polymers more flexible than said high-strength polymer, and said covering layer or covering layers together bearing 10% or more part of the bursting stress of the balloon, and said cylindrical portion having a wall thickness of 25 μm or thinner.
Claim 37
Dependent Claim
26 words
The balloon catheter of claim 31 wherein said covering layer or covering layers together bear 20% or more part of the bursting stress of the balloon.
Claim 38
Dependent Claim
96 words
The balloon catheter of claim 31 wherein said tubular catheter body comprising an inner tube with a first lumen open at a distal end and an outer tube which forms a second lumen between its inside surface and an outside surface of said inner tube and have a distal end retreated from the distal end of said inner tube by a predetermined distance, and said balloon whose front and rear end portions are attached to a distal end portions of said inner and outer tubes, respectively, and whose an inside space connects with said second lumen.
Claim 39
Dependent Claim
129 words
A balloon catheter comprises of a tubular catheter body and a balloon attached to a distal end portion of said tubular catheter body, and said balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer, a first covering layer formed over the outside surface of said base layer of an flexible polymer having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than the high-strength polymer, and a second covering layer formed over the outside surface of said first covering layer of another flexible polymer more flexible than said flexible polymer for said first covering layer.
Claim 40
Dependent Claim
129 words
A balloon catheter comprises of a tubular catheter body and a balloon attached to a distal end portion of said tubular catheter body, and said balloon comprising a cylindrical portion and attaching portions for a catheter, said catheter balloon having a base layer formed of a high-strength polymer, a first covering layer formed over the outside surface of said base layer of an flexible polymer having a ratio of the elongation at break of the high-strength polymer to that of the flexible polymer within a range from about 1:0.7 to 1:1.3 and being more flexible than the high-strength polymer, and a second covering layer formed over the outside surface of said first covering layer of another flexible polymer more flexible than said flexible polymer for said first covering layer.
Claim 41
Dependent Claim
19 words
The balloon catheter of claim 34 wherein said cylindrical portion has a wall thickness of 25 μm or thinner.
Claim 42
Dependent Claim
25 words
The balloon catheter of claim 34 wherein the difference of tensile fracturing strength between said high-strength polymer and said flexible polymer is 30% or smaller.
Claim 43
Dependent Claim
96 words
The balloon catheter of claim 34 wherein said tubular catheter body comprising an inner tube with a first lumen open at a distal end and an outer tube which forms a second lumen between its inside surface and an outside surface of said inner tube and have a distal end retreated from the distal end of said inner tube by a predetermined distance, and said balloon whose front and rear end portions are attached to a distal end portions of said inner and outer tubes, respectively, and whose an inside space connects with said second lumen.
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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) | 2002-03-08 | 2002-09-07 | 2003-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-08 | 2006-09-07 | 2007-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-08 | 2010-09-07 | 2011-03-09 | $7700.00 | Window Closed / Lapsed |