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US 5,439,022 AGranted
Lavage valve
OwnerDaniel A. Summers, Howard Levyinventors
Life of this patent
Estimating the term…
Abstract
Disclosed is a lavage valve apparatus and a 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 or mechanical (or magnetic) bias. Application of hydraulic pressure via a syringe pumps irrigation fluid through the valve into the patient. Termination of hydraulic pressure allows mechanical re-seating of the movable valve member and vacuum withdrawal of the fluid.
Claims13
Valve apparatus comprising:
- a valve body comprising first, second and third orifices and a bypass passageway;
- a valve member comprising first and second end portions and movable within said valve body;
- means for biasing said valve member;
- and
- means for applying pressure to said first end portion, thereby opening said first orifice and said bypass passageway while occluding said third orifice;
- wherein said means for biasing said valve member comprises means for biasing said valve member into occluding said first orifice and said bypass passageway while opening said second and third orifices.
3 more elements
A method for using a valve comprising the steps of:
- providing a valve body comprising first, second and third orifices and bypass passageway;
- providing a valve member comprising first and second end portions, and movable in the valve body;
- biasing the valve member;
- and
- applying pressure to the first end portion thereby opening the first orifice and bypass passageway and occluding the second and third orifices;
- wherein the step of biasing the valve member comprises the steps of occluding the first orifice and bypass passageway while opening the second and third orifices.
3 more elements
Dependencies are inferred from the claim text.