Medical drainage pump with irrigation
First Claim
Patent Images
1. A medical drainage and irrigation system comprising:
- a peristaltic pump having a flexible tube passing therethrough;
a variable-speed and reversible-direction motor driving said peristaltic pump;
a check valve assembly on said flexible tube;
a patient tube at an end of said flexible tube;
said check valve assembly including means for permitting irrigating fluid to flow from an irrigation fluid reservoir through said peristaltic pump when said motor drives said peristaltic pump in a first direction and for permitting body fluid to flow from said peristaltic pump therethrough toward a drainage receptacle when said motor drives said peristaltic pump in a reverse direction;
said check valve assembly including means for preventing said irrigation fluid from flowing therethrough toward said drainage fluid receptacle and for preventing said body fluids form flowing therethrough toward said irrigating fluid reservoir; and
means for controlling a speed, a duration and direction of said motor whereby a duty ratio and a pumping rate of said peristaltic pump is controlled.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical drainage and irrigation system employs a reversible peristaltic pump to perform both drainage and irrigation. A motor control system independently controls the duty cycle and flow rate during drainage and irrigation using an electronic control to transfer the pumping direction between drainage and irrigation. A loop comprising a flow control valve assembly and external tubes connected thereto may be removed as an assembly for cleaning or discard.
-
Citations
4 Claims
-
1. A medical drainage and irrigation system comprising:
-
a peristaltic pump having a flexible tube passing therethrough; a variable-speed and reversible-direction motor driving said peristaltic pump; a check valve assembly on said flexible tube; a patient tube at an end of said flexible tube; said check valve assembly including means for permitting irrigating fluid to flow from an irrigation fluid reservoir through said peristaltic pump when said motor drives said peristaltic pump in a first direction and for permitting body fluid to flow from said peristaltic pump therethrough toward a drainage receptacle when said motor drives said peristaltic pump in a reverse direction; said check valve assembly including means for preventing said irrigation fluid from flowing therethrough toward said drainage fluid receptacle and for preventing said body fluids form flowing therethrough toward said irrigating fluid reservoir; and means for controlling a speed, a duration and direction of said motor whereby a duty ratio and a pumping rate of said peristaltic pump is controlled. - View Dependent Claims (2, 3, 4)
-
Specification