Peritoneal dialysis system using reverse osmosis purification device

Method for treating a patient comprising:

• a. purifying water from a source with a reverse osmosis device having:
• 1. input means for coupling to the source of water;
• 2. first reverse osmosis means being in spiral flow fluid communication with said input means for purification of at least a first portion of the water from the source, said first reverse osmosis means constructed and arranged to provide at least a first reverse osmosis multilayer assembly spirally rolled about a first axis so as to provide a generally spiral flow path for the water from the source;
• and
• 3. second reverse osmosis means being in spiral flow fluid communication with said first reverse osmosis means to receive the purified first portion of water for further purification of at least a second portion of the water, said second reverse osmosis means constructed and arranged to provide at least a second reverse osmosis multilayer assembly spirally rolled about a second axis so as to provide a generally spiral flow path for at least some of the purified portion of water from the first reverse osmosis means;
• b. means for supplying a predetermined amount of drug;
• c. means for mixing the purified second portion of the water with the drug to provide a dialysate solution;
• and
• d. means for delivering the dialysate solution to the peritoneal cavity of the patient.

Peritoneal dialysis system for treating a patient comprising:

• a. reverse osmosis device for purifying water from a source and comprising:
• 1. housing having an inlet for passage of water from the source, a first outlet for passage of purified water from the housing and a second outlet for passage of waste water remaining after purification;
• 2. first reverse osmosis means disposed within said housing and being in spiral flow fluid communication with said inlet for purification of at least a first portion of the water from the source, said first reverse osmosis means constructed and arranged to provide at least a first reverse osmosis multilayer assembly spirally rolled about a first axis so as to provide a generally spiral flow path for the water from the source, said first reverse osmosis means also being in fluid communication with said second outlet for passage of waste water through said second outlet;
• and
• 3. second reverse osmosis means being in spiral flow fluid communication with said first reverse osmosis means to receive said first portion of purified water for purification of at least a second portion of the purified water, said second reverse osmosis means constructed and arranged to provide at least a second reverse osmosis multilayer assembly spirally rolled about a second axis so as to provide a generally spiral flow path for at least some of the purified portion of water from the first reverse osmosis means, said second reverse osmosis means also being in fluid communication with said first outlet so as to permit passage of said second portion of purified water through the first outlet;
• said reverse osmosis device being formed of radiation sterilizable components;
• b. means for supplying a predetermined amount of drug;
• c. means for mixing the purified second portion of the water with the drug to provide a dialysate solution;
• and
• d. means for delivering the dialysate solution to the peritoneal cavity of the patient.