Continuous flow peritoneal dialysis system and method
First Claim
1. A continuous flow peritoneal dialysis process comprising:
- providing a source of sterilized dialysis fluid;
providing an inflow line for connection to a catheter adapted for implantation into the peritoneal cavity of a patient;
providing an outflow line for connection to said catheter;
delivering a flow of sterilized dialysis fluid from said course to said inflow line;
monitoring a function of the volume of said sterile dialysis fluid in said peritoneal cavity and controlling the inflow and outflow of said sterilized dialysis fluid so that a desired volume exists in said cavity in a manner that proper amount of fluid is maintained during dialysis; and
delivering said outflow of sterilized dialysis fluid to a disposal means so that a single flow of dialysis fluid is provided through the peritoneal cavity of said patient.
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Accused Products
Abstract
A continuous flow peritoneal dialysis system and process is disclosed which includes a source of sterilized peritoneal dialysis system in the form of a gravity feed head vessel (32). A by-pass valve (34) connects the head vessel to an inflow/outflow directional valve 40 which controls the inflow and outflow of the sterilized dialysis fluid to a peritoneal catheter (12). The peritoneal catheter is implanted into the peritoneal membrane (14) of the peritoneal cavity (15). A connectable/disconnectable inflow line (42) and outflow line (48) are connected to an inflow catheter (44) and outflow catheter (46), respectively, of the double peritoneal catheter (12). A pressure monitor (50) in the outflow line (48) monitors the pressure within the cavity (15) and adjusts the inflow and outflow accordingly to maintain a predetermined volume and pressure of dialysis fluid in the cavity to maintain the membrane (14) properly distended at all times for maximum dialysis efficiency and patient comfort. Secondarily, an outflow monitor (54) monitors the outflow and if need be, increases or decreases the inflow to the directional valve (40) by controlling a by-pass valve 34. Control of the level of dialysis fluid in the head vessel (32) is maintained by a level monitor (38) which also can operate the by-pass valve (34) to by-pass fluid to a drain tank (36). Sterile dialysis fluid flows through the cavity (15) in an open single-pass circuit and flows into the disposal and drain tank (36) upon passing through the cavity.
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Citations
25 Claims
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1. A continuous flow peritoneal dialysis process comprising:
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providing a source of sterilized dialysis fluid; providing an inflow line for connection to a catheter adapted for implantation into the peritoneal cavity of a patient; providing an outflow line for connection to said catheter; delivering a flow of sterilized dialysis fluid from said course to said inflow line; monitoring a function of the volume of said sterile dialysis fluid in said peritoneal cavity and controlling the inflow and outflow of said sterilized dialysis fluid so that a desired volume exists in said cavity in a manner that proper amount of fluid is maintained during dialysis; and delivering said outflow of sterilized dialysis fluid to a disposal means so that a single flow of dialysis fluid is provided through the peritoneal cavity of said patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A continuous flow peritoneal dialysis system comprising:
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a source of sterile dialysis fluid; an inflow line adapted for connection to said source and to a peritoneal catheter implanted in the peritoneal cavity of a patient; an outflow line adapted for connection to said peritoneal catheter; valve means for controlling the flow of dialysis fluid in said inflow and outflow lines to thereby control the volume of dialysis fluid in said peritoneal cavity; and disposal means connected to said outflow line for disposing of said outflow of dialysis fluid and establishing a single-pass open circuit through said peritoneal cavity of for dialysis; flow monitoring means for sensing a function of the volume and amount of dialysis fluid in said peritoneal cavity; and control means controlling said valve means in response to said flow monitoring means so that flow of said dialysis fluid through said peritoneal cavity is controlled in a manner that a desired amount of fluid exists in said peritoneal cavity for proper dialysis. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification