Device for carrying a peritoneal dialysis treatment
AssigneeFresenius Medical Care Deutschland GmbH
InventorsOlof Jansson, Pascal Bernard, Pierre-Yves Durand, Sture Hobro, Eva Persson, Bengt-Olov Thell
Life of this patent
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Abstract
The invention concerns a device and a method for a peritoneal dialysis treatment in several cycles. A cycler (1) controlled by a processor (31) fills the abdominal cavity with dialysis fluid, and drains the abdominal cavity. A sensor (37) senses a variable related to the draining of the dialysis fluid. The draining is interrupted when the variable reaches a breakpoint at which the variable is radically changed, thereby leaving the residual volume.
Claims38
A device for carrying out a tidal peritoneal dialysis treatment of a patient in a plurality of cycles, each cycle including a fill period (F), a dwell period (Dw) and drain period (Dr), the device including:
- a processor (31);
- a cycler (1) connected to the processor and adapted to fill the abdominal cavity of the patient with dialysis fluid, and to drain the abdominal cavity;
- and
- a sensor (37) connected to the processor and adapted to sense during the draining a variable related to the draining of the dialysis fluid from the abdominal cavity;
- wherein the processor (31) is adapted to initiate interruption of the draining, at least for most of the cycles of the treatment, when the variable reaches a breakpoint at which the variable is radically changed, thereby leaving a residual volume of dialysis fluid in the abdominal cavity.
A device according to any one of the preceding claims, including means (31,32,35,36) for determining a third parameter concerning a total length of time of the remaining part of the treatment.
A device according to any one of the preceding claims, including means (31,32,35,36) for determining a fourth parameter concerning a residual volume of dialysis fluid in the abdominal cavity after the drain period.
A device according to any one of the preceding claims, wherein said variable includes the flow rate of the dialysis fluid during the drain period.
A device according to any one of the preceding claims, wherein said variable includes a pressure in the abdominal cavity of the patient during the drain period.
A device according to any one of the preceding claims, wherein the sensor (37) is adapted to detect an initial value of said variable at the beginning of the drain period and a critical value of said variable, wherein the breakpoint is reached when the variable reaches the critical value.
A device for carrying out a tidal peritoneal dialysis treatment of a patient in a plurality of cycles, each cycle including a fill period (F), a dwell period (Dw) and drain period (Dr), the device including:
- means (31,32,35,36) for determining a first parameter concerning a desired target volume of the dialysis fluid to be contained in an abdominal cavity of the patient after each fill period of the treatment;
- means (31,32,35,36) for determining a second parameter concerning a total volume of a dialysis fluid to be used during the remaining part of the treatment;
- means (31,32,35,36) for determining a third parameter concerning a total length of time of the remaining part of the treatment;
- means (31,32,35,36) for determining a fourth parameter concerning a residual volume of dialysis fluid in the abdominal cavity after the drain period;
- a processor (31) adapted to calculate for the next one of said cycles by means of the parameters a fill volume (VF) of the dialysis fluid and a fill/dwell time including the time of the fill period and the dwell period;
- a cycler (1) connected to the processor and adapted to fill the abdominal cavity of the patient with the calculated fill volume of the dialysis fluid until the target volume is reached, and to drain the abdominal cavity after the calculated fill/dwell time;
- and
- a sensor (37) connected to the processor and adapted to sense during the draining a variable related to the draining of the dialysis fluid from the abdominal cavity;
- wherein the processor (31) is adapted to initiate interruption of the draining when the variable reaches a breakpoint at which the variable is radically changed, thereby leaving a residual volume of dialysis fluid in the abdominal cavity.
A method for carrying out a tidal peritoneal dialysis treatment of a patient in a plurality of cycles, each cycle including a fill period, a dwell period and drain period, the method including, for substantially all cycles, the steps of:
- filling the abdominal cavity of the patient with a fill volume of dialysis fluid;
- draining the abdominal cavity;
- sensing during the draining a variable related to the draining of the dialysis fluid leaving the abdominal cavity;
- interrupting the draining when, at least for most of the cycles of the treatment, the variable reaches a breakpoint at which the variable is radically changed;
- and
- leaving a residual volume of dialysis fluid in the abdominal cavity.
A method for carrying out a tidal peritoneal dialysis treatment of a patient in a plurality of cycles, each cycle including a fill period, a dwell period and drain period, the method including for substantially all cycles steps of:
- a) determining a first parameter concerning a desired target volume of the dialysis fluid to be contained in an abdominal cavity of the patient after each fill period of the treatment;
- b) determining a second parameter concerning a total volume of a dialysis fluid to be used during a remaining part of the treatment;
- c) determining a third parameter concerning a total length of time of the remaining part of the treatment;
- d) determining a fourth parameter concerning a residual volume of dialysis fluid in the abdominal cavity after the drain period;
- e) calculating for the next one of said cycles by means of the parameters a fill volume of the dialysis fluid and a fill/dwell time including the time of the fill period and the dwell period;
- f) filling the abdominal cavity of the patient with the calculated fill volume of the dialysis fluid until the target volume is reached;
- g) draining the abdominal cavity after the calculated fill/dwell time;
- h) sensing during the draining a variable related to the draining of the dialysis fluid leaving the abdominal cavity;
- i) interrupting the draining when the variable reaches a breakpoint at which the variable is radically changed;
- and
- j) leaving a residual volume of dialysis fluid in the abdominal cavity.
Dependencies are inferred from the claim text.