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Haemodialysis device

A technology of hemodialysis and blood, applied in the direction of dialysis system, suction equipment, etc., can solve the problems of troublesome control and the control mechanism of the hemodialysis device not working.

Inactive Publication Date: 2011-04-20
JMS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned hemodialysis apparatus can reliably manage the blood index value at each time in the hemodialysis treatment, but since it is necessary to set the target blood index value area at each time, the control is cumbersome.
In addition, since the set blood index value is specified as a range, as long as the actually measured blood index value exists within the set range, if the measured blood index value is at the limit of the set range , there is a problem that the control mechanism of the hemodialysis device does not work

Method used

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Embodiment Construction

[0121] As an example of the hemodialysis apparatus of the present invention, the following hemodialysis apparatus is listed, which is composed of the following units: a blood measurement unit that measures the hematocrit value of the patient's blood as a blood parameter; an actual work unit that performs blood treatment; and a control unit , which calculates the ratio %ΔBV of the amount of blood change that should be the target based on the hematocrit value, and presets the time-lapse route composed of %ΔBV as the target control line before the hemodialysis operation, using the above Formula (a) is used to control the actual working part of hemodialysis.

[0122] The hemodialysis operation performed by the hemodialysis apparatus of this embodiment is Figure 5 Proceed in the manner described.

[0123] That is, in the first half of the hemodialysis operation, the target control line A' based on the above formula (a) is used to quickly make the circulating blood volume close to...

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Abstract

Provided is a haemodialysis device in which the water removal rate can be rapidly and finely controlled so that the amount of blood can be suitably changed during haemodialysis, and in which there is an improvement in the control characteristics because the structure of the control means is simple and the operation is simplified. A haemodialysis device in which a time profile comprising target blood index values is preset as a target control line, and the dialysis conditions are controlled on the basis of blood index values measured or calculated at each control point over time in order to carry out haemodialysis, wherein the blood index value calculated taking account of the control delay at the control point one before a selected control point, the blood index value measured or calculated at that control point, and the target blood index value at the control point one after the selected control point are used to calculate the rate of water to be removed between the selected control point and the control point one after the selected control point, and water is removed between the two control points so that the target blood index value is reached.

Description

technical field [0001] The present invention relates to a blood treatment apparatus, and more particularly, to a hemodialysis apparatus capable of controlling water removal conditions such as water removal speed to prevent excessive water removal or conversely insufficient water removal that tends to occur during hemodialysis. Background technique [0002] In order to treat patients with impaired renal function, treatment to purify blood by dialysis or filtration through a semipermeable membrane has hitherto been performed. In this device, in order to perform safe and efficient blood purification, it is important to appropriately maintain the amount of circulating blood in the patient's body. Rapid or excessive water removal will cause excessive reduction in the patient's circulating blood volume, which may cause blood pressure drop, shock, etc. However, on the contrary, if water removal is slow, it takes a long time for blood purification, and if water removal cannot be pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/14
CPCA61M1/16A61M2001/1613A61M1/1613
Inventor 池田敦
Owner JMS CO LTD
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