US5128170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing medical device having a highly biocompatible surface
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1990-05-09
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Granted: 1992-07-07
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Expires: 2010-05-09
Abstract
Abstract A medical device having a highly biocompatible surface wherein hydrophilic polymer is bonded onto a surface of the medical device covalently through a nitrogen atom, and a method for manufacturing a medical device having a highly biocompatible surface comprising the steps of applying a hydrophilic polymer having azido group and/or a composition comprising a compound having at least two azido group and a hydrophilic polymer onto the surface of the medical device, and irradiating the biocompatible material with light so that the hydrophilic polymer is bonded to the medical device surface. The device has sufficient biocompatibility, medical functional capability and economical efficiency. The method easily provides a medical device with sufficient biocompatibility without impairing the device's medical functional capability and economical efficiency.
Inventors
- 👤 Takehisa Matsuda
- 👤 Kazuhiko Inoue
- 👤 Nobutaka Tani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/28; A61L27/34; A61L29/00; A61L29/08; A61L29/085; A61L31/00; A61L31/08; A61L31/10; A61L33/00; A61L33/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
72 words
A method for manufacturing a medical device having a highly biocompatible surface which comprises the steps of applying a composition comprising a compound having at least two azido groups and a hydrophilic polymer onto the surface of the medical device, and irradiating the applied composition with light to convert the azido groups to nitrene groups thereby bonding the hydrophilic polymer to the surface of the medical device and crosslinking the hydrophilic polymer.
Claim 2
Independent Claim
72 words
A method for manufacturing a medical device having a highly biocompatible surface which comprises the steps of applying a composition comprising a compound having at least two azido groups and a hydrophilic polymer onto the surface of the medical device, and irradiating the applied composition with light to convert the azido groups to nitrene groups thereby bonding the hydrophilic polymer to the surface of the medical device and crosslinking the hydrophilic polymer.
Claim 3
Independent Claim
98 words
A method for manufacturing a medical device having a biocompatible surface which comprises applying a least one biocompatible material onto the surface of the medical device, said at least one biocompatible material being selected from the group consisting of a hydrophilic polymer having at least two azido groups and a composition comprising a compound having at least two azido groups and a hydrophilic polymer; and irradiating the applied biocompatible material with light to convert the azido groups into nitrene groups, thereby bonding the hydrophilic polymer covalently to the surface of the medical device and crosslinking the hydrophilic polymer.
Claim 4
Independent Claim
98 words
A method for manufacturing a medical device having a biocompatible surface which comprises applying a least one biocompatible material onto the surface of the medical device, said at least one biocompatible material being selected from the group consisting of a hydrophilic polymer having at least two azido groups and a composition comprising a compound having at least two azido groups and a hydrophilic polymer; and irradiating the applied biocompatible material with light to convert the azido groups into nitrene groups, thereby bonding the hydrophilic polymer covalently to the surface of the medical device and crosslinking the hydrophilic polymer.
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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) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |