Patent ID: 7285105
Filing Date: 2007-10-23
Classification: A61M,Y10S

Abstract:
1. An automatic hemodialyzing apparatus for purifying blood brought into contact with dialysate via a semi-permeable membrane, the apparatus having a hemodialyzer, a blood circulating system for circulating blood, and a dialysate supply/discharge system for supplying/discharging dialysate, the apparatus comprising: the blood circulating system has two blood lines, one being an arterial line for withdrawing blood from the patient and feeding it into the hemodialyzer, and the other blood line being a venous line for returning the blood flowing out from the hemodialyzer to the patient; the dialysate supply/discharge system has a dialysate supply line for supplying dialysate to the hemodialyzer, and a dialysate discharge line for discharging the dialysate flowing out of the hemodialyzer; one of the two blood lines of said blood circulating system is provided with a reversibly-rotatable blood pump, and the other blood line is provided with a blood chamber and an overflow line having open/close means for making the liquid overflow from said blood chamber to the outside of the blood line; and said dialysate supply line and said dialysate discharge line have respectively first liquid supply means (supply side) and second liquid supply means (discharge side), at least one bypass line out of a first bypass line for linking the upstream side and the downstream side of the first liquid supply means or a second bypass line for linking the upstream side and the down stream side of the second liquid supply means being provided, and said bypass line(s) (the first bypass line and/or the second bypass line) being provided with third liquid supply means capable of supplying liquid both in forward and backward directions for enabling the regulation of the dialysate supply amount for water removing/liquid replenishing.