Biopsy seal
US4649904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1986 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Jan 2, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0686
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A disposable seal is provided for a luer lock end fitting, e.g. for a biopsy channel of an endoscope. The fitting has a tubular luer lock device and a retaining ring surrounding the tubular device. The seal is unitarily molded of a soft elastomer and has a double seal arrangement formed of an apertured end wall and a one-way-opening slitted plate or web behind the end wall. A distal end of the seal fits over the tubular luer lock device. This distal end has a radial cuff that seals against a flat transverse surface of the retaining ring and a frustoconic tapered protruding member which fits against a similar inner surface of the retaining ring to ensure that the cuff sealably engages the retaining ring under overpressure conditions. W
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.