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Medical fluid pump

  • US 6,953,323 B2
  • Filed: 01/31/2003
  • Issued: 10/11/2005
  • Est. Priority Date: 05/24/2002
  • Status: Expired due to Term
First Claim
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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.

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