Patent US4154244A successfully refreshed from Google Patents.
US4154244A
Expired / Lapsed
US
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Balloon-type catheter
Assignee: Allegiance Corp
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Filing: 1977-11-21
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Granted: 1979-05-15
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Expires: 1997-11-21
Abstract
Abstract A balloon-type catheter is disclosed having a catheter shank made of a block copolymer having thermoplastic rubber characteristics with a central block of ethylene-butylene copolymer and terminal blocks of polystyrene. The inflatable balloon member, and preferably the distal Y-member, of the catheter are made of an elastic composition which includes the same or a similar block copolymer, in the presence of polystyrene or equivalent material as a tackifying agent, polypropylene, and an oil-type plasticizer.
Inventors
- 👤 Lawrence F. Becker
- 👤 John J. Donohue
- 👤 Dean G. Laurin
- 👤 Henry M. Gajewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1027; A61L; A61L29/00; A61L29/04; A61L29/041; A61L29/049; A61L29/14; A61L29/141
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
112 words
A balloon-type catheter which comprises a tubular shaft and an inflatable balloon member, carried by said catheter, said shaft and balloon member being made of an elastic composition which comprises: at least 40 percent by weight of a block copolymer having thermoplastic rubber characteristics with a central block of ethylene-butylene copolymer and terminal blocks of polystyrene: from 0 to 45 percent by weight of polypropylene, at least one of said shaft and balloon member containing from 5 to 30 percent by weight of a tackifying agent comprising a low molecular weight polystyrene; said formulation being united with sufficient hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition.
Claim 2
Dependent Claim
112 words
A balloon-type catheter which comprises a tubular shaft and an inflatable balloon member, carried by said catheter, said shaft and balloon member being made of an elastic composition which comprises: at least 40 percent by weight of a block copolymer having thermoplastic rubber characteristics with a central block of ethylene-butylene copolymer and terminal blocks of polystyrene: from 0 to 45 percent by weight of polypropylene, at least one of said shaft and balloon member containing from 5 to 30 percent by weight of a tackifying agent comprising a low molecular weight polystyrene; said formulation being united with sufficient hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition.
Claim 3
Dependent Claim
30 words
The balloon-type catheter of claim 1 which carries a molded branched connector at its distal end attached to said tubular shank, said branched connector being made of said elastic composition.
Claim 4
Dependent Claim
37 words
The balloon-type catheter of claim 2 in which the formulation for said shaft contains from one to five percent by weight of polypropylene having a melt flow of essentially 50 to 100, as tested under ASTM D1238-70.
Claim 5
Dependent Claim
119 words
A balloon-type catheter which comprises a tubular shaft and an inflatable balloon member, carried by said catheter, said shaft and balloon member being made of an elastic composition which comprises: a block copolymer having thermoplastic rubber characteristics with a central rubbery polyolefin block and terminal blocks of polystyrene, said block copolymer exhibiting a Brookfield viscosity at 25 degrees C. of 10 to 2000 cps. when measured using a 10 percent by weight solids solution in toluene, said composition optionally including from 0 to 45 percent by weight of polypropylene, said formulation being mixed with sufficient hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition, said balloon member being sealed in position on said shaft.
Claim 6
Dependent Claim
119 words
A balloon-type catheter which comprises a tubular shaft and an inflatable balloon member, carried by said catheter, said shaft and balloon member being made of an elastic composition which comprises: a block copolymer having thermoplastic rubber characteristics with a central rubbery polyolefin block and terminal blocks of polystyrene, said block copolymer exhibiting a Brookfield viscosity at 25 degrees C. of 10 to 2000 cps. when measured using a 10 percent by weight solids solution in toluene, said composition optionally including from 0 to 45 percent by weight of polypropylene, said formulation being mixed with sufficient hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition, said balloon member being sealed in position on said shaft.
Claim 7
Dependent Claim
30 words
The balloon-type catheter of claim 4 which carries a molded, branched connector at its distal end attached to said tubular shank, said branched connector being made of said elastic composition.
Claim 8
Dependent Claim
37 words
The balloon-type catheter of claim 5 in which the formulation for said shaft contains from one to five percent by weight of polypropylene having a melt flow of essentially 50 to 100, as tested under ASTM D1238-70.
Claim 9
Dependent Claim
11 words
The catheter of claim 6 which contains a titanium oxide pigment.
References Cited (Backward Citations)
CA904138A
Cited
US3503399A
Cited
US3528869A
Cited
GB1234037A
Cited
GB1313347A
Cited
DE2433959A1
Cited
US3889685A
Cited
DE2454358A1
Cited
US4026296A
Cited
US3926705A
Cited
US3982544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |