Systems for Medical Fluid Pumps and Related Methods

A system for administering and draining fluid from a peritoneal cavity of a patient comprising:

• a microfluidic pump;
• a drain bag fluidly coupled to the microfluidic pump,
• a rigid container fluidly coupled to the microfluidic pump;
• and
• a dialysate bag positioned inside the rigid container.

A method of performing peritoneal dialysis, the method comprising:

• actuating a microfluidic pump to apply a positive pressure to an interior of a drain bag fluidly coupled to the microfluidic pump;
• actuating the microfluidic pump to apply a negative pressure to the interior of the drain bag to generate a vacuum inside the drain bag;
• opening a first valve along a first fluid line fluidly coupling the drain bag and a peritoneal cavity of a patient, wherein the vacuum generated inside the drain bag causes effluent to flow from the patient's peritoneal cavity to the drain bag;
• actuating the microfluidic pump to apply the positive pressure to a dialysate bag positioned inside an interior of a rigid container fluidly coupled to the microfluidic pump;
• and
• opening a second valve along a second fluid line fluidly coupling the dialysate bag and the peritoneal cavity of the patient, wherein the positive pressure applied to the dialysate bag causes fresh dialysate to flow from the dialysate bag to the patient's peritoneal cavity along the second fluid line.

A system for performing peritoneal dialysis, the system comprising:

• a microfluidic pump;
• a dual chamber bag fluidly coupled to the microfluidic pump, the dual chamber bag comprising:
• an effluent chamber configured to be fluidly coupled to a peritoneal cavity of a patient and receive effluent from the peritoneal cavity of the patient;
• a dialysate chamber configured to be fluidly coupled to the peritoneal cavity of a patient and to contain dialysate;
• and
• a flexible membrane separating the effluent chamber from the dialysate chamber.

A method of performing peritoneal dialysis treatment, the method comprising:

• actuating a microfluidic pump to apply a positive pressure to an interior of an effluent chamber of a dual chamber bag fluidly coupled to the microfluidic pump;
• actuating the microfluidic pump to apply a negative pressure to the interior of the effluent chamber of the dual chamber bag, wherein the negative pressure in the interior of the effluent chamber creates a vacuum inside the effluent chamber;
• flowing effluent from a peritoneal cavity of a patient into the effluent chamber;
• applying pressure to a dialysate chamber of the dual chamber bag, the dialysate chamber comprising dialysate;
• and
• flowing the dialysate from the dialysate chamber into the patient's peritoneal cavity.