US 6,595,948 B2 · Peritoneal dialysis apparatus

Abstract

The invention aims to provide a compact peritoneal dialysis apparatus using a disposable cassette integrally formed with a diaphragm and heating portion, in which a flow path can be switched quietly and a heating ability is high. By using a disposable cassette (8) integrally formed with a diaphragm, heating portion, and flow path switching portion, a predetermined amount of dialysis fluid is heated to a predetermined temperature with the heating portion. Clamps (111-118) for opening/closing a flow path switching portion are provided in order to form flow paths through which the heated peritoneal dialysis fluid is distributed into the peritoneal cavity of a patient almost continuously and is sucked and drained from the peritoneal cavity of the patient. The invention also aims to provide a peritoneal dialysis apparatus with which automatic dialysis treatment can be performed by the patient himself and the operation procedures of which are very clear and easy to understand, so treatment can be performed with optimal conditions, and even if a trouble should occur, it can be coped with easily.

Claims19

Dependent claims

A peritoneal dialysis apparatus on which a disposable cassette, integrally formed with a fluid distributing diaphragm, a heating portion and a flow path switching portion, is loaded and which is used by connecting to a dialysis fluid container storing a dialysis fluid and a drained fluid container, comprising:

a body provided with an operating portion and a display;
cassette loading means for detachably loading the cassette;
pumping actuating means for setting the diaphragm in a positive pressure state and negative pressure state, after the cassette is loaded, to distribute the fluid from the dialysis fluid container and to the drained fluid container;
heater means for heating an amount of dialysis fluid to a patient's body temperature while the dialysis fluid stays in the heating portion so that the heating portion is heated from both upper and lower sides after the cassette is loaded;
flow path switching means connected to a plurality of said dialysis fluid containers and which is made of flexible tubes and a plurality of dampers for opening/closing the flow path switching portion in order to form a flow path through which the heated dialysis fluid heated by said heater means is distributed into a peritoneal cavity of a patient and, after a period of time elapses, the dialysis fluid is sucked and drained from the peritoneal cavity;
and
control means connected to the operating portion, the display, said pumping actuating means, said heater, an said flow path switching means for controlling operation of the operating portion, the display, said pumping actuating means, said heater, and said flow path switching means.

4 more elements

A peritoneal dialysis apparatus on which a disposable cassette, integrally formed with a fluid distributing diaphragm, a heating portion forming upper and lower systems of flow paths through a gap and a flow path switching portion, is loaded and which is used by connecting to a dialysis fluid container storing a dialysis fluid and a drained fluid container, comprising:

a body provided with a operating portion and a display;
cassette loading means or detachably loading the cassette;
pumping actuating means for setting the diaphragm in a positive pressure state and negative pressure state, after the cassette is mounted, to distribute the fluid from the dialysis fluid container and to the drained fluid container;
heater means having three layers of sheet heaters that come into contact with the upper and lower systems of flow paths in which the dialysis fluid stays to perform heating from above and below, thereby heating an amount of dialysis fluid in the heating portion to a patient's body temperature after the cassette is mounted;
flow path switching means connected to a plurality of said dialysis fluid containers and which is made of flexible tubes and a plurality of dampers for opening/closing the flow path switching portion in order to form a flow path through which the heated dialysis fluid heated by the heater means is distributed into a peritoneal cavity of a patient continuously and, after a period of time elapses, the dialysis fluid is sucked and drained from the peritoneal cavity;
and
control means connected the operating portion, the display, said cassette loading means, said pumping actuating means, said heater means, and said flow path switching means to control the operating portion, the display, said cassette loading means, said pumping actuating means, and said flow heater means, and said flow path switching means.

4 more elements

A peritoneal dialysis apparatus having a dialysis fluid circuit including at least one dialysis fluid container filled with a dialysis fluid and at least one drained fluid container for recovering the dialysis fluid, fluid distributing means for distributing the dialysis fluid from the dialysis fluid container as a start point or to the drained fluid container as an end point, display means for informing conditions concerning dialysis, the apparatus configured to supply the dialysis fluid to a patient with the fluid distributing means and to recover a drained fluid and having heater means to perform heating of the dialysis fluid to patient's body temperature, flow path switching means connected to a plurality of said dialysis fluid containers and to the drained fluid container for opening/closing the flow path switching portion in order to form a flow path through which the heated dialysis fluid heated by said heater means is distributed into a peritoneal cavity of a patient and recovering drained dialysis fluid after a predetermined time elapse thereby performing a dialysis, comprising:

an operation procedure necessary for the dialysis is displayed on a display of the display means through a voice guide and at least one of a still image and a motion image including characters.

Dependencies are inferred from the claim text.

Peritoneal dialysis apparatus

Life of this patent

Peritoneal dialysis apparatus

Life of this patent

Abstract

Claims19