×

Withdrawal of priming fluid from extracorporeal circuit of hemodialysis machines or the like

  • US 5,932,103 A
  • Filed: 09/26/1997
  • Issued: 08/03/1999
  • Est. Priority Date: 02/13/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of removing a priming fluid from an extracorporeal circuit of a dialysis machine, said extracorporeal circuit comprising arterial and venous lines filled with said priming fluid and a dialyzer connected to said arterial and venous lines, said dialyzer having a membrane separating said extracorporeal circuit from a dialysate circuit and a blood side in said extracorporeal circuit and a dialysate side in said dialysate circuit, the method comprising the steps of:

  • transporting at least a portion of said priming fluid from said extracorporeal circuit across said dialyzer membrane into said dialysate circuit; and

    simultaneously introducing blood from a patient connected to said arterial and venous lines into at least one of said arterial and venous lines as said priming fluid is being transported across said dialyzer membrane,whereby the introduction of said blood into said arterial and venous lines and withdrawal of said priming fluid from said extracorporeal circuit prevents said portion of priming fluid from being substantially returned to said patient or disposed of in a receptacle externally of the extracorporeal circuit.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×