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Peritoneal dialysis apparatus

  • US 4,560,472 A
  • Filed: 12/10/1982
  • Issued: 12/24/1985
  • Est. Priority Date: 12/10/1982
  • Status: Expired due to Term
First Claim
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1. In a peritoneal dialysis apparatus having a dialyzate supply station, a heater and measuring station, solution delivery means, a drain and measuring station, a first fluid flow path communicating with said dialyzate supply station and said heater and measuring station, a second fluid flow path communicating with said heater and measuring station and said solution delivery means, a third fluid flow path communicating with said solution delivery means and said drain and measuring station, the improvement comprising:

  • means for pumping dialyzate through said first flow path;

    first valve means comprising independently operable first and second tubing occluding means for controlling fluid flow in said first fluid flow path;

    second valve means comprising said second tubing occluding means and a third independently operable tubing occluding means for controlling fluid flow in said second fluid flow path;

    third valve means comprising said third tubing occluding means and an independently operable fourth tubing occluding means for controlling fluid flow in said third fluid flow path; and

    ,control means including said valve means for dictating the time intervals during which;

    said first and second tubing occluding means are opened to open said first valve means and said pump means is pumping to allow fluid flow in said first fluid flow path while said third and fourth tubing occluding means are closed to close said second valve means and said third valve means to prevent fluid flow in said second fluid flow path and in said third fluid flow path;

    said second and third tubing occluding means are opened to open said second valve means to allow fluid flow by gravity in said second fluid flow path while said first and fourth tubing occluding means are closed to close said first valve means and said third valve means and said pump means is not pumping, to prevent fluid flow in said first fluid flow path and in said third fluid flow path; and

    said third and fourth tubing occluding means are opened to open said third valve means to allow fluid flow by gravity in said third fluid low path while said first and second tubing occluding means are closed to close said first valve means and said second valve means and said pump means is not pumping, to prevent fluid flow in said first fluid flow path and in said second fluid flow path.

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