Method for parting rubber and products formed thereby, and a method of making a blood vessel
US4670313A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Mar 27, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1386
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed are several methods of parting rubber from an underlying surface. Polyvinyl alcohol, methylcellulose, starch derivatives and dextran are all PA1 suitable parting agents for rubber. Polyvinyl pyrrolidine is a particularly effective parting agent for use in the formation of balloon-type medical catheters; it is also useful as a parting agent in the formation of synthetic membranes, blood vessels and PA1 conduits. The invention includes the method of use of these parting agents as well as the products formed by the disclosed process(es). Also disclosed is a method of forming a synthetic blood vessel of a polymer material, e.g., polyurethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.