Medical tool having lubricious surface in a wetted state and method for production thereof
US5441488A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Feb 7, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/1088
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention provides a medical tool the surface of which is enabled to acquire lasting lubricity (low friction) by assuming a state wetted with bodily fluid or aqueous solution. This surface is formed without requiring the coating work to be repeated. The medical tool is produced by coating a water-swellable polymer having in the molecular unit thereof a reactive functional group capable of being reacted with a proton-donating group, on the surface of a matric material possessing the proton-donating group, and also by coating a water-swellable polymer having in the molecular unit thereof a reactive group capable of being reacted with an acid anhydride group on the surface of a matric material possessing the acid anhydride group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.