Dialysis apparatus and technique

Details Dialysis apparatus and technique Dialysis apparatus and technique

A - Human Necessities

61

M

182/13, 73/173

A61M 1/16 (2006.01)

Patent

CA 1115989

ABSTRACT OF THE DISCLOSURE Dialysis apparatus is arranged to enable convenient measuring of ultrafiltration rate from liquid, such as blood, that is to be dialyzed. Dialyzate passageway through which the ultrafiltration flow rate can be readily measured as by introducing a gas bubble into the dialyzate and timing its movement through the passageway. An air- injection attachment can be fitted to the dialyzer or to a dialyzate supply system, to inject the gas bubble for such measurement. Bubble injection can also be effected in a flow rate measuring passageway downstream of the dialyzer. Flow rates of dialyzate into and out of dialyzer can be compared to show ultrafiltration while dialyzing. Dialyzer can also have end caps with thickened closure walls for better ultrasonic welding to the dialyzer body, and the end caps can have vents that simplify testing of the seals between the caps and the dialysis membrane body.

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