Automatic dialysis method and apparatus
First Claim
1. Method for automatic dialysis using a dialysis unit which, in service, is connected to a patient undergoing a dialysis treatment, comprising the phases of acquiring allowed values of input parameters and desired values of patient parameters, acquiring actual values of the patient parameters;
- acquiring actual values of machine parameters; and
controlling the operation of the dialysis unit using controlled values of the machine parameters to make the patient parameters take on the desired values, wherein;
the patient parameters comprise the relative variation in blood volume (BV) and the weight loss (WL),the machine parameters comprise the weight loss rate (WLR) and the conductivity of the (CD) dialysis fluid,the phase of acquiring allowed values of the input parameters and desired values of the patient parameters comprises the phases of;
storing the permitted values of the relative variation in blood volume as a function of the dialysis time;
storing the permitted values of the weight loss as a function of the dialysis time;
storing the permitted values of the weight loss rate as a function of the dialysis time;
storing the permitted values of the conductivity of the dialysis fluid as a function of the dialysis time;
the phase of acquiring the actual values of the patient parameters comprises the phases of;
acquiring actual values of the weight loss during the treatment;
acquiring actual values of the variation in blood volume during the treatment;
the phase of controlling the operation of the dialysis unit comprises the phases of;
calculating the operating values of the weight loss rate and of the conductivity of the dialysis fluid; and
correcting the weight loss rate and the conductivity of the dialysis fluid on the basis of the operating values.
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Accused Products
Abstract
A method for automatic dialysis using a dialysis unit which, in service, is connected to a patient undergoing a dialysis treatment, including the phases of acquiring allowed values of input parameters and desired values of patient parameters, acquiring actual values of the patient parameters, the patient parameters including the relative variation in blood volume (BV) and the weight loss (WL), acquiring actual values of machine parameters including the weight loss rate (WLR) and the conductivity of the (CD) dialysis fluid, and controlling the operation of the dialysis unit using controlled values of the machine parameters to make the patient parameters take on the desired values.
138 Citations
21 Claims
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1. Method for automatic dialysis using a dialysis unit which, in service, is connected to a patient undergoing a dialysis treatment, comprising the phases of acquiring allowed values of input parameters and desired values of patient parameters, acquiring actual values of the patient parameters;
- acquiring actual values of machine parameters; and
controlling the operation of the dialysis unit using controlled values of the machine parameters to make the patient parameters take on the desired values, wherein;the patient parameters comprise the relative variation in blood volume (BV) and the weight loss (WL), the machine parameters comprise the weight loss rate (WLR) and the conductivity of the (CD) dialysis fluid, the phase of acquiring allowed values of the input parameters and desired values of the patient parameters comprises the phases of; storing the permitted values of the relative variation in blood volume as a function of the dialysis time; storing the permitted values of the weight loss as a function of the dialysis time; storing the permitted values of the weight loss rate as a function of the dialysis time; storing the permitted values of the conductivity of the dialysis fluid as a function of the dialysis time; the phase of acquiring the actual values of the patient parameters comprises the phases of; acquiring actual values of the weight loss during the treatment; acquiring actual values of the variation in blood volume during the treatment; the phase of controlling the operation of the dialysis unit comprises the phases of; calculating the operating values of the weight loss rate and of the conductivity of the dialysis fluid; and correcting the weight loss rate and the conductivity of the dialysis fluid on the basis of the operating values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- acquiring actual values of machine parameters; and
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12. Automatic dialysis apparatus, comprising a dialysis unit, means for acquiring allowed values of input parameters and desired values of patient parameters;
- means for acquiring the actual values of the patient parameters;
means for acquiring the actual values of the machine parameters; and
means for controlling the operation of the dialysis unit using operating values of the machine parameters in order to make the patient parameters take on the desired values;
wherein;the patient parameters comprise the relative variation in blood volume (BV) and the weight loss (WL), the machine parameters comprise the weight loss ratio (WLR) and the conductivity of the (CD) dialysis fluid, the acquisition means comprise; means for storing the permitted values of the relative variation in blood volume as a function of the dialysis time; means for storing the permitted values of the weight loss as a function of the dialysis time; means for storing the permitted values of the weight loss rate as a function of the dialysis time; means for storing the permitted values of the conductivity of the dialysis fluid as a function of the dialysis time; the means for acquiring the actual values of the patient parameters comprise; means for acquiring the actual values of the weight loss, at each instant during the treatment; means for acquiring the actual values of the variation in blood volume, at each instant during the treatment; the means for controlling the operation of the dialysis unit comprise; means for calculating the operating values of the weight loss rate and of the conductivity of the dialysis fluid; means for correcting the values of the weight loss rate and of the conductivity of the dialysis fluid, on the basis of the operating values. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
- means for acquiring the actual values of the patient parameters;
Specification