Medical valve assembly
US5006114A · kind A · utility
Inventors
Key dates
| Filing date | Apr 20, 1990 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Apr 20, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical valve assembly is described in which the valve assembly has a female luer lock portion on an inlet end of the device and a male luer lock portion on the outlet portion of the valve. A movable piston seals the inlet portion of the valve from the outlet portion when the piston is in the closed position. When a syringe is attached to the inlet portion of the valve assembly, the piston is displaced in a manner that unseals a fluid channel inlet. This connects the end of the syringe to the fluid channel which is connected, at its outlet end, to a catheter or other device, connected to a patient. Thus, medication can be introduced to, or fluids aspirated from, a patient's bloodstream, without the use of a syringe having a needle. When the syringe is removed from the inlet to the valve assembly, the piston is urged by a biasing means into its original closed position creating a seal between the inlet portion of the valve and the outlet portion of the valve. This feature maintains catheter patency. The top surface of the piston along with the area of the female luer lock connector does not have any fluid reservoir and can be easily cleaned to prevent the possibility of bacterial …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.