Paracentesis valve
First Claim
Patent Images
1. 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.
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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.
44 Citations
12 Claims
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1. 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.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for using a valve comprising the steps of:
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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. - View Dependent Claims (11, 12)
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Specification