Abstract:
A method of determining the concentration of a nonelectrolyte contained in an electrolyte solution, which comprises preparing a graph showing the relationship between electric conductivity and nonelectrolyte concentration by measuring the electric conductivities of various solutions each containing a mixture of an electrolyte with a nonelectrolyte and determining the concentration of a target nonelectrolyte contained in the solution on the basis of the above graph by using the measured electric conductivity of the solution.
Abstract:
PURPOSE:To provide a device which automatically makes medical fluid for a blood dialyser from powder drug using an electrical conductivity meter as a detector for the concentration of solution. CONSTITUTION:Powder drug is supplied from a dissolving water and drug A supplier 3 to a dissolving section 4, the temperature of solution is maintained at above 20 deg.C with a heater 2, the concentration of the solution is continuously detected by a concentration detector 1, the supplying amount of the powder drug is controlled, and a specified concentration of medical fluid is obtained.
Abstract:
PROBLEM TO BE SOLVED: To prepare a mixed solution containing an electrolyte and a nonelectrolyte in which lowering of concentration of the electrolytic solution is prevented simply at the time of preparing and also the lowering of the electrolyte concentration is eliminated from the initial stage of a plurality of preparations in a patch type mixing equipment. SOLUTION: Water is fed into a preparation tank 15 of a mixing equipment, and water is circulated from a piping 20 or the like and agitated, and an electrolytic chemical 101 of a dialyzate solution A agent is added continuously and mixed therein, and the electric conductivity of a water solution is measured by a conductivity meter 24 to prepare the electrolytic water solution of a given concentration. A glucose (nonelectrolyte) chemical 102 is added and mixed continuously while the electrolytic water solution is agitated, and the electric conductivity of the mixed water solution is measured, and a mixed water solution (A agent) containing an electrolyte and a nonelectrolyte of a given concentration is prepared, and then discharged. The above-referred series of processes are repeated a plurality of times. In the first preparation, before the electrolytic chemical 101 is added and mixed into water, glucose of the same volume as the volume of the glucose contained in a residual liquid remaining unavoidably in a mixing equipment 1 after the mixed water solution prepared by the preparation after the first preparation onwards is discharged is introduced.
Abstract:
PURPOSE:To offer a method for hemodialysis and an apparatus therefor, under which removal of water can be done without causing such conditions as fall of blood pressure, headache, nausea or vomit, i.e., without giving any burden to a patient. CONSTITUTION:The targeted volume U (ml) of water removal in respect of a patient, the total time T (time) and the ultimate speed Ve of water removal (ml/time) are inputted into the arithmetic section 102 of the computer 100 by operating switches on the keyboard 20. The arithmetic section 102 calculates the speed V1 of water removal from time to time in accordance with the specified speed function f (t) of water removal containing a constant determined based upon the set targeted volume U (ml) of water removal, total time T (time) and ultimate speed Ve of water removal (ml/time). The speed V1 of water removal is converted into the control variable F1 for the water removal pump 12 at the arithmetic section 104 and its signal is inputted into the control unit 106 of the water removal pump 12. As a result, the rotational frequency of the driving motor M, for example, of the water removal pump 12 is controlled and the speed V of water removal of the dialyzator 1 is controlled accordingly.
Abstract:
PURPOSE:To provide the artificial dialysis device which blood to be automatically executed and eliminates the danger that air is trapped into the dialyzer and blood circuit during these operations. CONSTITUTION:This artificial dialysis device has an arithmetic control section 10 connected to a blood pump 6 provided between the dialyzer 1 and a washing liquid supply section 7. The arithmetic control section 10 successively calculates the integrated supply liquid volume or weight of the washing liquid from the washing liquid supply section 7 in accordance with the weight of the washing liquid supply section 7 or the forward rotating speed of the blood pump 6 and stops the operation of the blood pump 6 when the integrated supply liquid volume or weight attains the volume or weight of the washing liquid to be desired to be use preset in the arithmetic control section 10.
Abstract:
PROBLEM TO BE SOLVED: To prevent the growth of bacteria, in a dialyzate adjustment device which uses a powder granular chemical, by easily achieving sterilization using a small amount of water while using no hypochlorous acid soda and eliminating the need to add any special devices, etc. SOLUTION: Purified water is supplied to the water receiving tank 2 of a dialyzate adjustment device and heated by an existing temperature-elevating heater 3 to a temperature of about 50 to 100 deg.C at which bacteria die. The purified water heated is made to circulate through a fluid circulation circuit 2a including the water receiving tank 2 and a fluid circulation circuit 7a including a dissolving tank 7, for a required time, to sterilize the water receiving tank 2, dissolving tank 7, and liquid circuits of the device.
Abstract:
PURPOSE:To provide the artificial dialysis device which can automatically execute the operation to wash a dialyzate circuit and the dialyzate circuit side of a dialyzer including air removal and can make efficient dialysis treatment by saving the labor and time required for the washing operation. CONSTITUTION:This dialysis device has the dialyzate circuit connected in such a manner that the dialyzate flows in the direction opposite from a blood circuit 3 within the dialyzer 1 disposed in the vertical direction. The device has also a first dialyzate inversion circuit 10 connected to a dialyzate recovering circuit 5 from a selector valve 8 of a dialyzate supply circuit 4 constituting the dialyzate circuit and a second dialyzate inversion circuit 11 connected to the dialyzate supply circuit 4 from a selector valve 9 of the dialyzate recovering circuit 5.
Abstract:
PURPOSE:To provide the control method of an artificial dialysis treatment eliminating the manual input of dialysis treatment conditions to a patient monitoring device, capable of setting the dialysis treatment conditions to the patient monitoring device quickly and surely, and simply processing the dialysis treatment conditions after a treatment. CONSTITUTION:An IC card 1 written with the patient name and dialysis treatment conditions for each patient in advance is inserted into a patient monitoring device 3 provided with the reading function of the IC card 1, the display function of its content, and the auxiliary writing function to the IC card 1, the patient name and the dialysis treatment conditions are displayed, the patient monitoring device 3 is operated according to the dialysis treatment conditions for a dialysis treatment, and data processing is performed by an IC card storage device 6 provided with the reading function of the IC card 1 as required in this control method of an artificial dialysis treatment.