Portable Peritoneal Dialysis System
First Claim
1. A portable peritoneal dialysis system for a patient with renal dysfunction or failure comprising:
- an inlet port for providing inflow to the patient'"'"'s peritoneal cavity;
an outlet port for providing outflow from the patient'"'"'s peritoneal cavity;
a volume of dialysate for flow into and out of the patient'"'"'s peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate;
a closed liquid flow loop, including a pump, for flowing the dialysate into and out of the patient'"'"'s peritoneal cavity;
an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient'"'"'s peritoneal cavity; and
a urea- and ammonia-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing urea and ammonia from dialysate removed from the patient'"'"'s peritoneal cavity, the material being packed around semi-permeable hollow fibers with interior fiber walls that reject cations, thereby retaining cations in the dialysate.
1 Assignment
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Accused Products
Abstract
A portable peritoneal dialysis system for a patient includes an inlet port for providing inflow to the patient'"'"'s peritoneal cavity, an outlet port for providing outflow from the patient'"'"'s peritoneal cavity, and a volume of dialysate for flow into and out of the patient'"'"'s peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate. The portable peritoneal dialysis system also includes a closed liquid flow loop, including a pump, for flowing the dialysate into and out of the patient'"'"'s peritoneal cavity, and an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient'"'"'s peritoneal cavity. The portable peritoneal dialysis system further includes a urea- and ammonia-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing urea and ammonia from dialysate removed from the patient'"'"'s peritoneal cavity, the material being packed around semi-permeable hollow fibers with interior fiber walls that reject cations, thereby retaining cations in the dialysate.
187 Citations
29 Claims
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1. A portable peritoneal dialysis system for a patient with renal dysfunction or failure comprising:
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an inlet port for providing inflow to the patient'"'"'s peritoneal cavity; an outlet port for providing outflow from the patient'"'"'s peritoneal cavity; a volume of dialysate for flow into and out of the patient'"'"'s peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate; a closed liquid flow loop, including a pump, for flowing the dialysate into and out of the patient'"'"'s peritoneal cavity; an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient'"'"'s peritoneal cavity; and a urea- and ammonia-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing urea and ammonia from dialysate removed from the patient'"'"'s peritoneal cavity, the material being packed around semi-permeable hollow fibers with interior fiber walls that reject cations, thereby retaining cations in the dialysate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A portable peritoneal dialysis system for a patient comprising:
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an inlet port for providing inflow to the patient'"'"'s peritoneal cavity; an outlet port for providing outflow from the patient'"'"'s peritoneal cavity; a volume of dialysate that is infused into and moved out of the patient'"'"'s peritoneal cavity, thereby removing from the dialysate uremic waste metabolites that have diffused into the dialysate; a closed liquid flow loop for circulating the dialysate from the patient, throughout the system and back into the patient; a pump attached to the closed liquid flow loop for flowing the dialysate into the patient'"'"'s peritoneal cavity and flowing the dialysate containing uremic waste metabolites out of the patient'"'"'s peritoneal cavity; an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient'"'"'s peritoneal cavity; a urea- and ammonia-removing stage, including at least one replaceable urea- and ammonia-removing cartridge in the closed liquid flow loop, the cartridge containing material for removing urea and ammonia from dialysate removed from the patient'"'"'s peritoneal cavity, the material being packed around semi-permeable hollow fibers with interior fiber walls that reject cations, thereby retaining calcium, magnesium, potassium, and sodium cations in the dialysate; an ammonia-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge comprising material for removing ammonia, the material being packed around semi-permeable hollow fibers with interior fiber walls that reject cations, thereby retaining calcium, potassium, and sodium cations in the dialysate; and an organic- and phosphate-removing and pH-control stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and material for controlling the pH of the dialysate at or near physiological pH.
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16. A method for providing peritoneal dialysis to a patient using a portable peritoneal dialysis system including a closed liquid flow loop for flowing a volume of dialysate into and out of the patient'"'"'s peritoneal cavity and through dialysate regenerating stages, comprising:
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a) flowing a volume of dialysate from the patient'"'"'s peritoneal cavity through an organic- and phosphate-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing organic compounds and phosphate from dialysate removed from the patient'"'"'s peritoneal cavity;
thereafterb) flowing the volume of dialysate through semi-permeable hollow fibers contained in a urea- and ammonia-removing stage, including at least one replaceable cartridge in the closed liquid flow loop, the cartridge containing material for removing urea and ammonia from dialysate removed from the patient'"'"'s peritoneal cavity, the material being packed around the semi-permeable hollow fibers, the semi-permeable hollow fibers having interior fiber walls that reject cations, thereby retaining cations in the dialysate while removing from the dialysate uremic waste metabolites that have diffused into the dialysate, to produce regenerated dialysate; and c) introducing the regenerated dialysate into the patient'"'"'s peritoneal cavity. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification