Systems and methods for performing peritoneal dialysis
First Claim
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; and
a fluid circuit in fluid communication with the catheter, the fluid circuit comprising;
a fluid loop, the fluid loop configured to circulate dialysate into, through and out of a peritoneal cavity of the patient at an outflow rate from the peritoneal cavity greater than an inflow rate to the peritoneal cavity,a supply of a dialysate coupled to the fluid circuit, andat least one of a (i) a chamber coupled to the fluid loop through which the dialysate can be fed at a feed rate into the fluid loop, and (ii) a cleaning device coupled to the fluid loop via a cleaning fluid path wherein the dialysate can be fed into the cleaning fluid path and cleaned at a cleaning rate prior to reintroduction into the fluid loop;
a discharge fluid path coupled to the fluid loop; and
a cycler that pumps the dialysate into the fluid circuit at a feed rate and circulates the dialysate at a circulation rate along the fluid loop to remove a therapeutic effective amount of solutes and excess water from the patient, the cycler further configured to drain the dialysate from the fluid circuit at a discharge rate that is less than the circulation rate and at least substantially equal to a difference between the outflow rate and the inflow rate, allowing the dialysate to be circulated a plurality of times along the fluid loop prior to discharge.
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Accused Products
Abstract
Systems and methods for providing multiple pass continuous flow dialysis therapy are provided. The present invention includes a fluid circuit connected to a patient via a catheter thereby defining a fluid loop along which a therapy fluid including a dialysate can be continuously circulated into, through and out of a peritoneal cavity of a patient to remove a therapeutically effective amount of excess water and solutes including uremic toxins. The feed rate and discharge rate of therapy fluid into the fluid loop can be controllably regulated in proportion to the circulation rate of fluid in the fluid loop such that the therapy fluid can pass a multiple number of times along the fluid loop prior to discharge.
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Citations
19 Claims
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1. A system for providing peritoneal dialysis to a patient, the system comprising:
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a catheter having an inflow lumen and an outflow lumen in communication with the patient'"'"'s peritoneal cavity; and a fluid circuit in fluid communication with the catheter, the fluid circuit comprising; a fluid loop, the fluid loop configured to circulate dialysate into, through and out of a peritoneal cavity of the patient at an outflow rate from the peritoneal cavity greater than an inflow rate to the peritoneal cavity, a supply of a dialysate coupled to the fluid circuit, and at least one of a (i) a chamber coupled to the fluid loop through which the dialysate can be fed at a feed rate into the fluid loop, and (ii) a cleaning device coupled to the fluid loop via a cleaning fluid path wherein the dialysate can be fed into the cleaning fluid path and cleaned at a cleaning rate prior to reintroduction into the fluid loop; a discharge fluid path coupled to the fluid loop; and a cycler that pumps the dialysate into the fluid circuit at a feed rate and circulates the dialysate at a circulation rate along the fluid loop to remove a therapeutic effective amount of solutes and excess water from the patient, the cycler further configured to drain the dialysate from the fluid circuit at a discharge rate that is less than the circulation rate and at least substantially equal to a difference between the outflow rate and the inflow rate, allowing the dialysate to be circulated a plurality of times along the fluid loop prior to discharge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for providing peritoneal dialysis to a patient, the system comprising:
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a catheter having an inflow lumen and outflow lumen in communication with the patient'"'"'s peritoneal cavity; and a fluid circuit in fluid communication with the catheter thereby defining only a single fluid loop capable of circulating dialysate into, through and out of the peritoneal cavity at an outflow rate from the peritoneal cavity greater than an inflow rate to the peritoneal cavity, the fluid circuit comprising; a supply of a dialysate coupled to the fluid loop, a cleaning device coupled to the fluid loop via a cleaning fluid path wherein the dialysate can be fed into the cleaning fluid path and cleaned at a cleaning rate prior to reintroduction into the fluid loop, and a discharge fluid path coupled to the fluid loop; and a cycler that pumps the dialysate into the fluid loop at a feed rate and circulates the dialysate along the fluid loop at a circulation rate to remove a therapeutic effective amount of solutes and excess water from the patient, the cycler further configured to drain dialysate at a discharge rate approximately equal to a difference between the outflow rate and the inflow rate, the discharge rate effective to circulate the dialysate a plurality of times along the fluid loop prior to discharge. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification