Methods of sterilizing elastomeric sealing articles
US7758806B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | May 20, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/001
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides a method sterilizing butyl rubber/styrene butadiene rubber (SBR) articles used in syringes or medical containers, comprising irradiating the butyl rubber/SBR elastomeric copolymer rubber article with gamma irradiation, wherein the SBR elastomeric copolymer comprises about 5% to about 50% of the rubber composition on a basis of total weight of the composition; and then exposing the irradiated rubber composition to a sterilizing gas for a time period sufficient to sterilize the rubber composition. The irradiated, sterilized rubber composition of the present invention is capable of maintaining superior performance standards with respect to sealability, recoverability from stress and elasticity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.