US 11,724,017 B2
Dialysis apparatus and priming method for dialysis apparatus
Kosho Matsuzaki, Kanazawa (JP); and Takashi Mishima, Kanazawa (JP)
Assigned to SHIBUYA CORPORATION, Kanazawa (JP)
Filed by SHIBUYA CORPORATION, Kanazawa (JP)
Filed on Nov. 8, 2021, as Appl. No. 17/520,840.
Claims priority of application No. 2020-188817 (JP), filed on Nov. 12, 2020.
Prior Publication US 2022/0143288 A1, May 12, 2022
Int. Cl. A61M 1/36 (2006.01)
CPC A61M 1/3649 (2014.02) [A61M 1/3647 (2014.02); A61M 1/3656 (2014.02); A61M 2205/3337 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A dialysis apparatus comprising:
a dialyzer in which a blood chamber and a dialysate chamber are formed; a blood circuit that circulates blood to the blood chamber in the dialyzer; a dialysate circuit that circulates dialysate to the dialysate chamber in the dialyzer; a liquid feeding pump that is provided in the dialysate circuit and feeds the dialysate; a connection channel that communicatively connects the dialysate circuit and the blood circuit; and
a blood pump provided with a housing that houses an elastic tube comprised in the blood circuit and a rotor that rotates inside the housing to rotate the tube while compressing the tube,
the dialysate being circulated from the dialysate circuit to the blood circuit via the connection channel during a priming operation,
wherein:
the blood pump comprises a tube attachment device that switches from an unattached state in which the tube is positioned outside the housing and permits a liquid to circulate thereinside, to an attached state in which the tube is housed in the housing and the rotor compresses the tube to block the tube; and
during the priming operation, with the blood pump being in the unattached state, the liquid feeding pump feeds the dialysate from the dialysate circuit to the blood circuit via the connection channel and, when a predetermined amount of the dialysate has circulated past the blood pump, the tube attachment device puts the blood pump into the attached state.