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US 4,381,591 AGranted
Method of assembling medical flushing valve
AssigneeAmerican Hospital Supply Corporation
InventorsLarry N. Barger, Kenneth R. McCord
Life of this patent
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Abstract
A valve for an arterial monitoring set which continuously supplies a small flow of parenteral liquid, such as normal saline, into a patient's artery while arterial pressure is being continuously monitored. The valve has a flow restrictor providing a normally slow continuous flow rate and an elastically distortable tube which is manually squeezable to provide a fast flush rate. The valve is convenient for one hand operation. A method for assembling the valve by twisting the tube is also disclosed.
Claims3
A method of assembling a medical flushing valve comprising the steps of:
- (a) sealing a restrictor inside an elastically distortable tube so the restrictor and tube combine to form a flow passage with a predetermined flow rate leaving a portion of the distortable tube extending beyond the ends of the restrictor;
- (b) securing one end of the distortable tube to a first hollow connector fixed within a housing, and securing the other end of the distortable tube to a second hollow connector which is movable with respect to the housing by twisting the elastically distortable tube with a torquing force and inserting the movable second hollow connector into the twisted end of the tube;
- and
- (c) compressingly urging the first and second hollow connectors into sealing engagement with the restrictor.
1 more element
Dependencies are inferred from the claim text.