EP0149693A1
Expired / Lapsed
EP
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Method of forming an antithrombogenic layer on medical devices
Assignee: Draeger Nederland Bv Te Best
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Filing: 1984-01-20
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Granted: —
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Expires: 2004-01-20
Abstract
Abstract An antithrombogenic layer is formed on medical devices by preparing an aqueous solution of a photosensitive polymer, a cross-linking salt and heparin; coating the medical device with said solution; exposing the coated device to ultraviolet radiation.
Inventors
- 👤 Martinus Henricus Kuypers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
A; A61; A61L; A61L33/00; A61L33/0005; A61L33/0011; A61L33/0029
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
Method of forming on medical devices an antithrombogenic layer comprising polyvinyl alcohol and heparin, characterized by the steps of: a) preparing an aqueous solution of a photosensitive polymer, a cross-linking salt and heparin; b) coating the medical device with said solution; c) exposing the coated device to ultraviolet radiation.
Claim 2
Dependent Claim
49 words
Method of forming on medical devices an antithrombogenic layer comprising polyvinyl alcohol and heparin, characterized by the steps of: a) preparing an aqueous solution of a photosensitive polymer, a cross-linking salt and heparin; b) coating the medical device with said solution; c) exposing the coated device to ultraviolet radiation.
Claim 3
Dependent Claim
28 words
Method according to claim 1, characterized in that the antithrombogenic layer is crosslinked to such an extent that large biological molecules cannot penetrate the interior of the sensor.
Claim 4
Dependent Claim
37 words
Method according to claim 1 or 2 of forming an antithrombogenic layer on a polymeric surface, characterized in that before coating the surface with said solution, this surface is chemically hydrophylised by chemical etching in chromic-sulphuric acid.
Claim 5
Dependent Claim
28 words
Applying the method of claims 1, 2 or 3 for coating a chemical or physical sensor such as a pressure, pH or oxygen sensor with an antithrombogenic layer.
Claim 6
Dependent Claim
17 words
Applying the method of claims 1, 2 or 3 for coating a catheter with an antithrombogenic layer.
Claim 7
Dependent Claim
18 words
Applying the method of claims 1, 2 or 3 for coating a medical instrument with an antithrombogenic layer.
Claim 8
Dependent Claim
21 words
A medical device at least partially coated with an antithrombogenic layer by performing the method of claims 1, 2 or 3.
References Cited (Backward Citations)
US3677800A
Cited
FR2142277A5
Cited
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