| 摘要 |
<p>A hemodialysis machine includes a chemical treatment system having a source (90) of chemical, and a proportioning pump (66) which pumps a dialysate concentrate in a dialysis mode, and pumps the chemical in a chemical treatment mode used for cleaning the machine. A three-way valve (26) of the machine is provided with several ports (32,34,40) each of which must be correctly connected with respective parts of the machine e.g. only one of the ports (34) must be connected to the chemical source (90). Incorrect connection is prevented by providing the ports as part of a safety assembly (110), which requires the ports to be connected to physically different connectors (56,70,92). <IMAGE></p> |
