Blood flow direction changeover device and method for hemodialyzer
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United States of America Patent
Stats
-
Feb 25, 1997
Grant Date -
N/A
app pub date -
Feb 25, 1994
filing date -
Mar 24, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Blood guided out of the artery of a patient by a blood pump is introduced into an arterial inlet of a blood flow direction changeover device, and it is then guided from the outlet of the changeover device to a dialzyer through an inlet thereof. The blood then leaves an outlet of the dialyzer, enters the blood flow path changeover device, leaves a venous outlet of the changeover device and returns into the vein of the patient. The dialytic liquid, on the other hand, leaves a dialytic liquid outlet, passes through a dialytic liquid flow direction changeover device and is finally discharged through a dialytic liquid outlet. Then, the respective changeover devices are changed over to reverse the respective flows. This is intermittently repeated. Thus, blood coagulation can be inhibited or prevented.
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