| 摘要 |
A compact self-sterilizable proportioning hemodialysis system alternatively usable with either a coil type or parallel flow artificial dialyzer without material alteration comprises a hydraulic driven dialysate proportioning pump in a positive pressure flow path to provide dialysate in a controlled concentration to a dialysate receiving canister. A coil-type dialyzer within the canister receives dialysate in a recirculating flow from a circulation pump. A venturi in the recirculating flow path provides a negative pressure to pull dialysate through a suction loop, which may alternatively include a parallel flow dialyzer. A conductivity cell, temperature monitor and blood leak detector sample and monitor dialysate from the canister, and to control the dialysate and indicate fault conditions. The system may alternatively function as a recirculating plate-type dialyzer having high dialysis efficiency. In this mode a vortex degasifier recirculating loop and an air separator in the suction loop eliminate entrained gases. Parts of the system may be sterilized by internal means, because the system defines a closed path when certain connections are made. An upright resistive heating steam generator delivers sterilizing steam throughout the liquid flow path which terminates in a pressure relief valve. This increases the steam temperature above the atmospheric water vaporization temperature and maintains the steam at a uniform temperature-pressure equilibrium throughout the flow path. The system requires no central dialysate mixing, yet closely controls the concentration of dialysate utilized.
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