Check Valve System

摘要

A pressure-maintaining valve assembly can be coupled to the tubing of an infusion pump system. The valve assembly includes an element that regulates fluid flow through the tubing. This element may also act as a one way or check valve.

主权项

1. A valve system for coupling with a pump device, the valve system comprising:
a pliable fluid pumping segment adapted for passage and propulsion of an infusion fluid toward a patient; and a valve assembly coupled to the pumping segment for controlling fluid flow through and pressure within the pumping segment, wherein the valve assembly has the following states: (a) a flow state wherein the valve assembly permits restricted flow through the pumping segment; (b) a constant-pressure state wherein the valve assembly permits flow through the pumping segment at a predetermined sustaining pressure independent of flow rate; and (c) a no-flow state wherein the valve assembly completely blocks flow through the pumping segment.