Claims
- 1. A medical article for insertion in the body which is provided with a hydrophilic coating by applying to the article a solution containing between 0.05 to 40% (weight to volume) of a compound which comprises at least two unreacted isocyanate groups per molecule, evaporating the solvent, applying a second solution containing between 0.5 to 50 % (weight to volume) of polyethylene oxide having a mean molecular weight of between 10.sup.4 to 10.sup.-7 to the thus treated article and then evaporating the solvent of the second solution, and curing the coating at elevated temperature.
- 2. A medical article according to claim 1 wherein the solution of polyethylene oxide or the solution of isocyanate contains a catalyst that accelerates the curing of the isocyanate.
- 3. A medical article according to claim 2 wherein the catalyst comprises an amine.
- 4. A medical article according to claim 2 wherein the catalyst comprises a diamine or triethylene diamine.
- 5. A medical article according to claims 1, 2 or 3 wherein the isocyanate solution contains a polymer.
- 6. A medical article according to claim 5 wherein the polymer in the isocyanate solution is selected from the group consisting of polyesters, polyvinyl compounds, polyurethanes, polyisocyanates, or copolymers thereof.
- 7. A medical article according to claim 1 wherein the curing is performed in the presence of a water-containing gas.
- 8. A medical article according to claim 1 wherein the polymer surface to be coated comprises a polymer selected from the group consisting of latex, polyvinylchloride, and polyurethane.
- 9. A medical article according to claim 1 wherein the hydrophilic coating is treated with iodine.
- 10. A medical article according to claim 1 which comprises a catheter.
Parent Case Info
This application is a division of application Ser. No. 487,102, filed on Apr. 21, 1983 now U.S. Pat. No. 4,459,317.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4232608 |
Lambert |
Nov 1980 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
1600963 |
Mar 1983 |
GBX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
487102 |
Apr 1983 |
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