Hemostasis valve
US4946133A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1988 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Nov 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/788
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The hemostasis valve gasket for use in an introducer which is integrally formed from an elastomeric material so as to exhibit resiliency and which is designed to close about small diameter objects such as a guide wire and about larger diameter objects such as a working catheter or guide catheter to prevent air or blood leakage. The gasket includes a cylindrical base with a central bore therethrough and a hollow convex domed shaped member projecting therefrom. The hollow dome shaped member terminates in a concave section. The concave section of the dome shaped member has at least one arcuate slit formed in the external surface which extends inwardly toward the hollow chamber to form a central, self-sealing passage aligned with the central bore of the cylindrical base member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.