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Apparatus-for-measuring-amount-of-ultrafiltrate-and-concentration-of-receiving-solvent-in-dialysis

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Apparatus for measuring amount of ultrafiltrate and concentration of receiving solvent in dialysis

Details

Inventors: Asano, Kiyokazu; Asano, Fumitaka;
Assignee:
Primary Examiner: Goldstein; Herbert
Assistant Examiner:
Attorney, Agent or Firm: Browdy and Neimark

An apparatus for measuring an amount of ultrafiltrate produced in a hemodialyzer and a concentration of a receiving solvent employed in the hemodialyzer by means of an ultrasonic wave, comprises: an ultrasonic vibrator; each of an inlet and an outlet flow-rate measuring parts provided with an input flow channel and an output flow channel; and a reflector interposed between the inlet and the outlet flow-rate measuring parts to permit only the ultrasonic wave to pass therethrough, the reflector reflecting the ultrasonic wave so that the ultrasonic wave issued from one of the inlet and the outlet flow-rate measuring parts is directed to the other.

DETAILED DESCRIPTION Any of the conventional method for determining an amount of the ultrafiltrate and a concentration of the receiving solvent has the problems described above, and therefore, it is not suited for practical use.
Accordingly, it is an object of the present invention to provide an apparatus for measuring the amount of ultrafiltrate produced in hemodialysis and the concentration of the receiving solvent employed in the hemodialysis so as to resolve the above mentioned problems.
It is another object of the present invention to provide an apparatus for measuring the amount of the ultrafiltrate an appartus which is capable of directly determining both an input amount and an output amount of the receiving solvent with the use of a simple construction without using any expensive and expendable parts for continuous determination of the amount of the filtrate, and without reducing its measuring accuracy in an condition, the apparatus being compact in construction as a whole.
It is a further object of the present invention to provide an apparatus for measuring a concentration of the receiving solvent, whereby the apparatus is not adversely affected even when carbonates are deposited in the receiving solvent, and, therefore capable of ensuring safety in use.
Other objects, features and advantages of the present invention will be apparent from the following description.

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