Medical fluid pump
First Claim
1. A method of operating a diaphragm pump for use in a medical treatment, the method comprising the steps of:
- filling and emptying the diaphragm pump with a fluid used during the medical treatment;
monitoring the fluid to detect air in the fluid;
removing at least a portion of the fluid from the diaphragm pump upon detection of air in the fluid;
terminating removal of the fluid upon detection of air in the fluid during removal from the diaphragm pump;
venting a first part of the diaphragm pump while maintaining a vacuum on a second part of the diaphragm pump;
removing the fluid and the air from the diaphragm pump; and
continuing filling and emptying the diaphragm pump with fluid used during dialysis treatment.
2 Assignments
0 Petitions
Accused Products
Abstract
A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a pump for a dialysis system is provided. The pump includes a first chamber wall including a first aperture, a second chamber wall including a second aperture, a piston, at least a portion of which can move through the second aperture, the piston including a third aperture, and first and second membranes disposed between the first and second chambers walls. A vacuum can be applied through the first aperture to pull the first membrane towards the first chamber wall and can be applied through the third aperture to pull the second membrane towards the piston. The piston can thereafter move the second membrane.
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Citations
23 Claims
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1. A method of operating a diaphragm pump for use in a medical treatment, the method comprising the steps of:
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filling and emptying the diaphragm pump with a fluid used during the medical treatment;
monitoring the fluid to detect air in the fluid;
removing at least a portion of the fluid from the diaphragm pump upon detection of air in the fluid;
terminating removal of the fluid upon detection of air in the fluid during removal from the diaphragm pump;
venting a first part of the diaphragm pump while maintaining a vacuum on a second part of the diaphragm pump;
removing the fluid and the air from the diaphragm pump; and
continuing filling and emptying the diaphragm pump with fluid used during dialysis treatment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15)
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13. A method of operating a diaphragm pump including a pump chamber for use in dialysis treatment, the method comprising the steps of:
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moving a piston to fill and empty the pump chamber with a fluid used during dialysis treatment wherein the fluid is monitored to detect air;
removing the fluid from the pump chamber upon detection of air in the fluid;
terminating removal of the fluid upon detection of air in the fluid as the fluid exits the pump chamber;
venting a top portion of the pump chamber while maintaining a vacuum on a lower portion of the pump chamber;
retracting the piston;
sealing off the top portion to atmosphere;
extending the piston to drain fluid and air from the pump chamber; and
continuing pump operations to fill and empty the pump chamber during dialysis treatment. - View Dependent Claims (16, 17, 18)
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19. A method of operating a pump for use in medical treatment, the method comprising the steps of:
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pneumatically pulling an outer surface of each of two fluid receiving membranes wherein the membranes are located within a pump chamber of the pump;
mechanically moving a first one of the membranes to empty an fill the pump chamber with a fluid during regular pump operations;
monitoring the fluid to detect air therein;
removing at least a portion of the fluid from the pump chamber upon detection of air in the fluid;
terminating removal of the fluid upon detection of air in the fluid as the fluid is removed from the pump;
draining the fluid and the air from the pump; and
continuing regular pump operations. - View Dependent Claims (20, 21, 22, 23)
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Specification