Patent US2400091A successfully refreshed from Google Patents.
US5229211A
Expired / Lapsed
US
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Medical device for insertion into a body
Assignee: Terumo Corp
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Filing: 1991-10-03
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Granted: 1993-07-20
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Expires: 2011-10-03
Abstract
Abstract A medical device for insertion into a body, wherein a part of a substrate thereof destined to be inserted into the body is furnished with a coating of a polymer manifesting lubricity in a wetted state and a part of said substrate destined substantially not be inserted into the body is furnished with said polymer coating treated for divestiture of lubricity.
Inventors
- 👤 Hiraku Murayama
- 👤 Naofumi Okajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:06
CPC Classifications
A; A61; A61L; A61L29/00; A61L29/08; A61L29/085; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31725; Y10T428/31736; Y10T428/31786; Y10T428/31794; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A medical device for insertion into a body, said medical device including a basal part for manipulating the medical device, said medical device comprising a substrate that is entirely coated with a hydrophilic polymer coating, the hydrophilic polymer coating on said basal part being treated with an isocyanate prepolymer to reduce hydrophilicity and to increase the frictional resistance and the manipulability of the basal part of the medical device without generating lubricity even when wetted with a liquid.
Claim 2
Dependent Claim
78 words
A medical device for insertion into a body, said medical device including a basal part for manipulating the medical device, said medical device comprising a substrate that is entirely coated with a hydrophilic polymer coating, the hydrophilic polymer coating on said basal part being treated with an isocyanate prepolymer to reduce hydrophilicity and to increase the frictional resistance and the manipulability of the basal part of the medical device without generating lubricity even when wetted with a liquid.
Claim 3
Dependent Claim
18 words
A medical device according to claim 1, wherein said hydrophilic polymer coating is a maleic anhydride type polymer.
Claim 4
Dependent Claim
24 words
A medical device according to claim 2, wherein said maleic anhydride type polymer is a partial alkyl ester of a methylvinyl ether-maleic anhydride copolymer.
Claim 5
Dependent Claim
30 words
A medical device according to claim 1, wherein said polymer coating is deposited by virtue of covalent bond with a reactive functional group present on the surface of said substrate.
Claim 6
Dependent Claim
16 words
A medical device according to claim 1, wherein said substrate is fabricated of an organic polymer.
Claim 7
Dependent Claim
29 words
A medical device according to claim 5, wherein said organic polymer is one member selected from the group consisting of polyvinyl chloride resin, polyurethane resin, polyamide latex, and polyesters.
Claim 8
Dependent Claim
85 words
A medical device for insertion into a body that includes a basal part for manipulating the medical device, said medical device comprising a substrate that is entirely coated with a partial alkyl ester of a methyl vinyl ether-maleic anhydride copolymer, the coating on said basal part being treated with an isocyanate prepolymer to reduce the hydrophilicity of the basal part and to increase the manipulability and frictional resistance of the basal part of the medical device without generating lubricity even when wetted with a liquid.
Claim 9
Dependent Claim
85 words
A medical device for insertion into a body that includes a basal part for manipulating the medical device, said medical device comprising a substrate that is entirely coated with a partial alkyl ester of a methyl vinyl ether-maleic anhydride copolymer, the coating on said basal part being treated with an isocyanate prepolymer to reduce the hydrophilicity of the basal part and to increase the manipulability and frictional resistance of the basal part of the medical device without generating lubricity even when wetted with a liquid.
Claim 10
Dependent Claim
14 words
A medical device according to claim 7, wherein said medical device is a catheter.
References Cited (Backward Citations)
EP0106004A1
Cited
JPS5981341A
Cited
GB2112646A
Cited
EP0166998B1
Cited
GB2206118A
Cited
JPS6433181A
Cited
JPH01195863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |