초록 ▼

This invention relates to the regulation of the conditions of haemodialysis by ultrafiltration of the blood wherein ultrafiltration conditions are regulated automatically as a function of the difference between the actual weight of the patient and a predetermined area of acceptable weights at any st

This invention relates to the regulation of the conditions of haemodialysis by ultrafiltration of the blood wherein ultrafiltration conditions are regulated automatically as a function of the difference between the actual weight of the patient and a predetermined area of acceptable weights at any stage during the course of haemodialysis, which area will generally include an ideal curve which the patient\s weight will be constrained to follow during the course of haemodialysis. This invention is applicable to the treatment of invalids having chronic renal disease.

대표청구항 ▼

A method of regulating haemodialysis conditions while simultaneously subjecting a patient to ultrafiltration of the blood, which method comprises: circulating the blood of the patient to and from one side of a membrane of a haemodialyser, circulating a haemodialysis solution to and from the other si

A method of regulating haemodialysis conditions while simultaneously subjecting a patient to ultrafiltration of the blood, which method comprises: circulating the blood of the patient to and from one side of a membrane of a haemodialyser, circulating a haemodialysis solution to and from the other side of the said membrane of the haemodialyser, supplying physiologically acceptable fluid to the patient by perfusion, monitoring variations in the weight of the patient during the haemodialysis, determining a validity zone defined by two weight/time curves defining at any given moment an area of weight values, comparing variations in weight with said area at any one moment, for generating a control signal, and controlling at least a parameter determining the course of ultrafiltration according to said control signal. A haemodialysis apparatus for effecting dialysis of the blood by ultrafiltration, comprising: a haemodialyser having membrane means separating a blood compartment for a dialysis solution compartment, means for causing the circulation of the blood of a patient and a haemodialysis solution on either side of said membrane, a perfusion arrangement for a patient whose blood is to undergo haemodialysis, at least one sensor of a parameter related to the weight of a patient for providing a signal representing variations in the weight of the patient, means for comparing the signal of variations in weight with an area of weight values defined by plotting maximum and minimum acceptable weights of the patient at each time within a haemodialysis period during which the haemodialyser is to be employed, to give a control signal when the signal of weight variation is not within said area, and means for controlling at least a parameter determining the course of ultrafiltration according to said control signal.