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US 5,395,350 AGranted
Paracentesis valve
OwnerDaniel A. Summersinventor
Life of this patent
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Abstract
Disclosed is a paracentesis valve apparatus and method of using the valve. The valve comprises a valve body having three apertures and a bypass passageway. A movable valve member with truncated end portions moves linearly within the valve body by means of hydraulic pressure alone. Application of negative hydraulic pressure via a syringe withdraws fluid from a body cavity through the valve into the syringe. Application of positive hydraulic pressure to the syringe pumps the fluid through the valve into a receptacle.
Claims12
Valve apparatus comprising:
- a valve body comprising first, second and third orifices and a bypass passageway;
- and a valve member comprising first and second truncated cone end portions;
- and said valve member movable within said valve body solely by hydraulic pressure.
A method for using a valve comprising the steps of:
- providing a valve body comprising first, second and third orifices and a bypass passageway;
- providing a valve member comprising first and second truncated cone end portions, and movable in the valve body;
- and
- moving the valve member solely by hydraulic pressure.
1 more element
Dependencies are inferred from the claim text.