Pivot pin bearing for biomedical systems
US4675106A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Apr 12, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2315/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a disposable biomedical system for processing fluids in a closed environment such as a plasmapheresis system, comprising a plastic rotor mounted for rotation on a pivot pin bearing and a seal, particularly a silicone lubricated O-ring seal, between the rotor and pin, the improvement wherein said pivot pin is a molded pivot pin of a hard plastic material having a low coefficient of friction and lubriciousness, and which is capable of being irradiated by gamma radiation for sterilization and modification of the plastic material without degradation or loss of lubricious properties. The pivot pin bearing preferably comprises an injection molded polyamide based resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.