초록 ▼

A disposable pumping cassette having an integral auxiliary flow control and pressure monitoring member is used for delivering a medicinal fluid to a patient. The pumping cassette includes an elastomeric member mounted in a rigid body having an inlet and an outlet. An inlet valve and an outlet valve

A disposable pumping cassette having an integral auxiliary flow control and pressure monitoring member is used for delivering a medicinal fluid to a patient. The pumping cassette includes an elastomeric member mounted in a rigid body having an inlet and an outlet. An inlet valve and an outlet valve on the cassette are opened, and the flow control is positioned to allow the medicinal fluid to flow freely through the cassette, priming it before the outlet is connected to the patient. The cassette is then coupled to an associated pump driver, closing the flow control to disable free fluid flow through the cassette, and the outlet to the cassette is coupled in fluid communication with the patient's body.

대표청구항 ▼

[ We claim:] [1.] A pump cassette, adapted to be driven by a pump driver having a plunger, comprising:a cassette inlet port, a cassette outlet port and a fluid path therebetween;a rigid face member;a rigid base member having an enlarged recess forming a pumping chamber along said fluid path;an elast

[ We claim:] [1.] A pump cassette, adapted to be driven by a pump driver having a plunger, comprising:a cassette inlet port, a cassette outlet port and a fluid path therebetween;a rigid face member;a rigid base member having an enlarged recess forming a pumping chamber along said fluid path;an elastomeric member positioned between said face and base members;said face member including a plunger opening therethrough opposite said pumping chamber to permit the passage of the plunger to control the flow of fluid through said pumping chamber;at least one inlet and at least one outlet flow control member provided on the cassette for engagement with the base member to control fluid flow through the cassette; andan auxiliary flow control member disposed adjacent to the outlet flow control member and selectively operable in one of a first mode and a second mode as a function of a position of the auxiliary flow control member, operation of said auxiliary flow control member in said first mode enabling fluid to flow freely through the cassette, and in said second mode, actuating said outlet flow control member to prevent free fluid flow along the fluid path within the cassette.