초록 ▼

A change in the internal pressure of the fluid-infusion tube of a peristaltic fluid-infusion pump due to occlusion in the fluid-infusion tube is detected through a change in the diameter of the fluid-infusion tube. The occlusion is detected by detection of the change in the distance between the oppo

A change in the internal pressure of the fluid-infusion tube of a peristaltic fluid-infusion pump due to occlusion in the fluid-infusion tube is detected through a change in the diameter of the fluid-infusion tube. The occlusion is detected by detection of the change in the distance between the opposite wall portions of the tube.

대표청구항 ▼

An apparatus for detecting occlusion in a fluid-infusion tube of a peristaltic fluid-infusion pump comprising: a pair of stationary pieces respectively mounted adjacent said fluid-infusion tube at a fluid inlet portion and a fluid outlet portion of said fluid-infusion pump; a common movable member h

An apparatus for detecting occlusion in a fluid-infusion tube of a peristaltic fluid-infusion pump comprising: a pair of stationary pieces respectively mounted adjacent said fluid-infusion tube at a fluid inlet portion and a fluid outlet portion of said fluid-infusion pump; a common movable member having a pair of pressing parts disposed respectively in opposition to said stationary pieces, said pressing parts being adapted to press the parts of said fluid-infusion tube which correspond to said fluid inlet and outlet portion of said pump, with a predetermined substantially equal pressure between said pressing parts and said respective associated stationary pieces during normal fluid infusing, said common movable member being adapted to be displaced corresponding to a change in a first distance between opposite wall portions of said fluid-infusion tube at said inlet portion thereof, and a change in a second distance at said outlet portion thereof, the sum of said first and second distances always being constant, said first and second distances being changed by a change in the internal pressure of said fluid-infusion tube caused by occlusion in said fluid-infusion tube; and means coupled to said common movable member for detecting said occlusion by detecting said displacement of said common movable member.