Methods of improving the wear resistance of prosthetic medical devices
US7186362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2005 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | May 5, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L27/26
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prosthetic medical device exhibiting improved wear resistance is fabricated by sealing at least one polyolefinic material in an airtight container and providing an inert atmosphere within the airtight container. The polyolefinic material is exposed to an irradiation source to yield a cross-linked irradiated polyolefinic material. At least one non-irradiated polyolefinic material is blended with the irradiated polyolefinic material, and the prosthetic medical device is formed from the blended material. Selectively cross-linked polymeric compositions may be created by blending a specific amount of cross-linked resins with a specific amount of uncross-linked resins then cured into a polymeric matrix whereby the desired degree or percentage of overall cross-linking is obtained. The polymeric material may then be formed directly into a finished article by injection molding the polymeric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.