Fast test for medical pump
AssigneeEitan Medical Ltd.
InventorBoaz Eitan
Life of this patent
Estimating the term…
Abstract
A method and apparatus are provided for use with a pump. The method includes, (a) placing liquid in a tube coupled to the pump, (b) injecting an air bubble into the tube in a manner that does not increase pressure within the tube, and such that there is a predetermined volume of liquid between the air bubble and the pump, (c) using the pump to advance the air bubble along the tube to the bubble detector of the pump, (d) using the pump, assessing accuracy of the pump by automatically measuring the volume of liquid pumped to advance the air bubble to the bubble detector, and (e) using the pump to continue advancing the air bubble along the tube, past the bubble detector, and using the pump to measure a volume of the air bubble. Other applications are also described.
Claims18
A method for use with a pump, the method comprising:
- (A) placing liquid in a tube that is coupled to the pump;
- (B) creating an air bubble in the tube by injecting air into the tube (a) in a manner that does not increase pressure within the tube, and (b) such that there is a predetermined volume of liquid between the air bubble and the pump;
- (C) using the pump to advance the air bubble along the tube to the bubble detector of the pump;
- (D) using the pump, assessing accuracy of the pump by automatically measuring the volume of liquid pumped to advance the air bubble to the bubble detector;
- (E) using the pump to continue advancing the air bubble along the tube, past the bubble detector, and using the pump to measure a volume of the air bubble;
- (F) subsequently, occluding the tube downstream of the air bubble;
- (G) using the pump to increase pressure within the tube by pumping a volume of liquid;
- (H) using the pump to measure the volume of liquid pumped to increase pressure within the tube;
- (I) assessing the increase in pressure within the tube based on (a) the measured volume of liquid pumped to increase the pressure within the tube and (b) the measured volume of the air bubble;
- (J) using a sensor of the pump, measuring a sensed increase in pressure in the tube in response to the pumping of the volume of liquid;
- and
- (K) assessing accuracy of the sensor based on the assessed increase in pressure and the sensed increase in pressure.
Dependencies are inferred from the claim text.