초록 ▼

A medical infusion pump is disclosed which provides for greatly improved accuracy in the delivery of medicaments to a patient. Among the various features included in the instant invention is a pumping body which serves to deform and reform a tube so as to maintain the initial cross-section thereof a

A medical infusion pump is disclosed which provides for greatly improved accuracy in the delivery of medicaments to a patient. Among the various features included in the instant invention is a pumping body which serves to deform and reform a tube so as to maintain the initial cross-section thereof and thereby preserve the output accuracy of the pump. Also disclosed with regard to the pumping body is a wholly mechanical synchronization of the pumping body and valves associated therewith and coactive with the aforementioned synchronization a mechanical linearization of output of the pumping body per each pumping cycle. Additionally, several features which serve to enhance the utility of the instant invention are also included therein among which is an associated assembly operative to automatically load or disload a tube or IV set into or out of the pumping body. Associated with the assembly operative to automatically load or disload a tube and disclosed herein is an assembly operative to selectively open or close a slide clamp associated with the tube in such a way as to ensure that the tube is occluded such that in combination with the valves associated with the pumping body, a condition of free-flow of medicament is never realized. Additionally disclosed are sensor housings adapted to measure various quantities associated with fluid flowing through the tube wherein the housings are with associated components adapted to achieve a substantially normal orientation with respect to the sidewall of the tube and in the achieving of such normal orientation, expressing an essentially zero elastic stress gradient across the tube.

대표청구항 ▼

[ In accordance with our invention we claim:] [3.]3. An infusion pump operative to pump fluid and having associated therewith a tube, said tube being operative to carry said fluid and saidpump having a moving shuttle and a jaw wherein, in operation, with said tube resident between said shuttle and j

[ In accordance with our invention we claim:] [3.]3. An infusion pump operative to pump fluid and having associated therewith a tube, said tube being operative to carry said fluid and saidpump having a moving shuttle and a jaw wherein, in operation, with said tube resident between said shuttle and jaw, and said moving shuttle in cooperation with said jaw serving to cyclically deform and reform said tube and said tube having an output of said fluid which is a nonlinear function of the displacement of the shuttle; a shuttle actuating cam comprising a plurality of simple radii operative to vary the rate of change of said displacement of said shuttle to linearize said nonlinear dependence of said output upon said cyclical deformation of said tube.