| 摘要 |
<p>There is disclosed herein a dialysis machine for use with a negative-pressure-type dialyzer. The machine includes a flow system for drawing fresh dialysis solution, under a negative pressure, through the dialyzer and a system for determining, setting and controlling ultrafiltration rates in the dialyzer. The ultrafiltration system includes a branch for communication with the dialyzer when flow to and from the dialyzer is terminated. In the branch there is provided a pump for applying negative pressure to the dialyzer and drawing liquid therethrough, and a meter for measuring the flow rates. Means are also provided for measuring negative pressure and transmembrane pressure during operation of the ultrafiltration branch. Pressure controls are also provided so as to assure maintenance of the ultrafiltration rates. There is also disclosed herein a method for determining, setting and controlling the ultrafiltration rate. The method includes terminating flow of dialysis solution to and from the dialyzer, drawing liquid from the dialyzer in order to establish a desired ultrafiltration rate and maintenance of that ultrafiltration rate during actual dialysis by appropriate pressure controls and adjustment of negative pressure and transmembrane pressure.</p> |
