Device and method for perfusing peritoneal dialyzing fluid
First Claim
1. An instrument for continuous recirculation of peritoneal dialysate to infuse and drain out the dialysate automatically through catheters implanted in a peritoneal cavity of a human body, said instrument comprising:
- a prefilter;
a primary filter located downstream of said prefilter, said primary filter being operable to filter out a portion of the dialysate, and said primary filter comprising a semipermeable membrane having a maximum permeable molecule of up to 30,000 dalton;
a suction pump operable to lower an outside pressure of said primary filter relative to an inside pressure of said primary filter;
a feeding pump operable to supply a fresh dialysate; and
a secondary filter located downstream of said feeding pump, said secondary filter being operable to filter out a portion of the fresh dialysate, and said secondary filter comprising a semipermeable membrane having a maximum permeable molecule of up to 5,000 dalton.
0 Assignments
0 Petitions
Accused Products
Abstract
An instrument for continuous recirculation of peritoneal dialysate to infuse and drain out the dialysate automatically through catheters implanted in a peritoneal cavity of a human body. The instrument includes a prefilter, a primary filter comprising a semipermeable membrane having a maximum permeable molecule of up to 30,000 dalton, a pump for lowering the outside pressure of the primary filter relative to the inside pressure, a secondary filter having a semipermeable membrane having a maximum permeable molecule of 5,000 dalton, a pump for raising the pressure of a supplemental liquor line relative to the inside of a secondary filter line, and a method of recirculating dialysate using the above-mentioned instrument. The recirculation instrument permits the reuse of protein which is permeated out from a patient'"'"'s body, as an osmotic agent in peritoneal dialysate, in order to maintain a disinfected recirculating line, and to improve an ultrafiltration rate and clearance of uremic toxin.
-
Citations
7 Claims
-
1. An instrument for continuous recirculation of peritoneal dialysate to infuse and drain out the dialysate automatically through catheters implanted in a peritoneal cavity of a human body, said instrument comprising:
-
a prefilter;
a primary filter located downstream of said prefilter, said primary filter being operable to filter out a portion of the dialysate, and said primary filter comprising a semipermeable membrane having a maximum permeable molecule of up to 30,000 dalton;
a suction pump operable to lower an outside pressure of said primary filter relative to an inside pressure of said primary filter;
a feeding pump operable to supply a fresh dialysate; and
a secondary filter located downstream of said feeding pump, said secondary filter being operable to filter out a portion of the fresh dialysate, and said secondary filter comprising a semipermeable membrane having a maximum permeable molecule of up to 5,000 dalton. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification