Injection shut-off valve
US4819684A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1987 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Mar 24, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86815
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injection shut-off valve for insertion into an infusion line comprises a housing with connections for inlet and outlet lines. The housing includes an orifice for introducing an injection syringe. A valve is installed in the housing and includes a deformable diaphragm. In a non-injection state, the valve device seals off fluid flow between the inlet and outlet lines on the one hand and the orifice on the other. During injection, the diaphragm is deformed to create an opening such that fluid flow from the inlet to the housing is shut off. During deformation of the diaphragm the orifice is brought into fluid carrying communication with the outlet line from the housing, thus making it possible for the injection fluid to pass through the housing into the outlet line, and to a patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.