Patent ID: 7922911
Filing Date: 2011-04-12
Classification: A61M

Abstract:
1. A system for providing peritoneal dialysis to a patient, the system comprising: a catheter having an inflow lumen and an outflow lumen in communication with the patient's peritoneal cavity; a fluid circuit in fluid communication with the catheter thereby defining a closed fluid path capable of circulating a therapy fluid into, through and out of the peritoneal cavity; a first supply of the therapy fluid including a dialysate coupled to the fluid circuit; a cycler that pumps the dialysate into the fluid circuit and circulates the dialysate along the closed fluid path at a first flowrate during a treatment period to remove a therapeutically effective amount of solutes and ultrafiltrate from the patient; a second supply of the therapy fluid including an osmotic agent solution coupled to the fluid circuit wherein the cycler can pump the second supply of fluid into the fluid circuit during the treatment period; a cleaning device coupled to the fluid circuit wherein the cleaning device is capable of removing solutes including at least a portion of urea from the therapy fluid as it circulates along the closed fluid path, and a reservoir coupled fluidly to the fluid circuit via the cycler and one or more pumps and branching off the closed loop for moving fluid at a controlled second flowrate from the fluid circuit to the reservoir and from the reservoir to the fluid circuit, the second flowrate less than half of the first flowrate, and wherein the reservoir is adapted to provide a variable increase in volume capacity to the fluid circuit allowing the system to compensate for an increase in fluid volume in the fluid circuit during treatment.