Noise-reducing dialysis systems and methods of reducing noise in dialysis systems
AssigneesBaxter International Inc., Baxter Healthcare S.A.
InventorsPaul R. Chapman, Robert W. Childers, Gideon Hecht, Anders Wellings
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Abstract
A method of pneumatically operating a dialysis system includes (i) pumping air in a first valve state from a pneumatic pump to operate a component of the dialysis system, and (ii) recirculating air in a second valve state by pumping air from an outlet of the pneumatic pump to an inlet of the pneumatic pump to minimize at least one of a noise pitch or noise amplitude when switching from the second valve state to the first valve state.
Claims11
A method of pneumatically operating a dialysis system comprising:
- (i) pumping air in a first valve state from a pneumatic pump to operate a component of the dialysis system;
- and
- (ii) recirculating air in a second valve state by pumping air from an outlet of the pneumatic pump to an inlet of the pneumatic pump to minimize at least one of a noise pitch or noise amplitude when switching from the second valve state to the first valve state.
A method of pneumatically operating a dialysis system comprising:
- (i) enabling air to be pulled in from a fluid flow portion of the dialysis system and to be selectively switched to instead be recirculated to reduce noise;
- and
- (ii) enabling air to be pushed out to the fluid flow portion of the dialysis system and to be selectively switched to instead be recirculated to reduce noise.
Dependencies are inferred from the claim text.