Peritoneal dialysis apparatus
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
An automatic cycler for performing Continuous Cycling Peritoneal Dialysis (CCPD) and Intermittent Peritoneal Dialysis (IPD) is provided. The apparatus of the present invention is a safe and convenient cycler apparatus for performing peritoneal dialysis in either home or clinical environment. The apparatus provides a stable base by storing dialysate at a relatively low position. Tubing administration set length is reduced to a minimum by the use of individual, separated valves and by the elimination of redundant, duplicate tube sections. Administration set complexity is reduced by the use of a conventional design dialysate container for heating and weighing of an infusing dialysate dosage. The apparatus allows for gravity feed to a patient with an optional capability of adjusting the pressure head for the gravity feed.
144 Citations
12 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. 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:
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means for pumping dialyzate; first valve means comprising at least two separately positioned tubing occluding means for controlling fluid flow in said first fluid flow path; second valve means comprising at least two separately positioned tubing occluding means, one of which is common to said first valve means, for controlling fluid flow in said second fluid flow path; and
,third valve means comprising at least two separately positioned tubing occluding means, one of which is common to said second valve means, for controlling fluid flow in said third fluid flow path.
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7. In a peritoneal dialysis apparatus having a dialyzate supply station, a dialyzate heater station, solution delivery means, and a drain and measuring station, an improved flow communication system comprising:
- a multiple conduit junction connection, a first conduit communicating between said junction connection and the heater station, a second conduit communicating between the junction connection and said dialyzate supply station a third conduit communicating between said junction connection and the drain and measuring station, a fourth conduit communicating between said junction connection and solution delivery means for communication with a patient, pump means for propelling dialyzate at least from said dialyzate supply station to the heater station through the second and first conduits, and valve means for controlling flow through each of said conduits.
- View Dependent Claims (8, 9, 10, 11, 12)
Specification