Blood purifying device and method of operating the same
AssigneeAsahi Kasei Medical Co., Ltd.
InventorSoichirou Okazaki
Life of this patent
Estimating the term…
Abstract
A blood purifying apparatus particularly suitable for continuous blood purification, and a method of controlling the same whereby the weight of body fluid removed from a patient and a feed weight to the patient can be more accurately controlled. A blood purifying apparatus 50 adapted for the continuous blood purification includes a drain C, a dialysate feed A, and a replacement fluid feed B, which are equipped with transfer pumps 5, 6, 7, respectively, reservoir containers 8, 9, and 10, respectively, that are capable of storing a predetermined volume, and fluid level sensors 11, 12, and 13, respectively. The blood purifying apparatus further includes a single weightmeter 20 capable of measuring the reservoir containers 8, 9, and 10 all at the same time.
Claims13
1-8. (canceled)
A blood purifying apparatus comprising a dialysate feed means, a replacement fluid feed means, a drain means, a blood purifying device, and a blood circulation path consisting of a blood drawing line and a blood retransfusing line, wherein:
- said dialysate feed means comprises:
- a dialysate transfer line of which one end is connected to said blood purifying device and the other end connected to a dialysate reservoir unit;
- a dialysate transfer pump disposed in said line;
- a dialysate reservoir container connected to a dialysate branch line branching off on an inlet side of said dialysate transfer pump;
- and a shutoff valve attached to said dialysate transfer line upstream of a branch portion;
- said replacement fluid feed means comprises:
- a replacement fluid feeding line of which one end is connected to said blood retransfusing line and the other end connected to a replacement fluid reservoir unit;
- a replacement fluid transfer pump disposed in said line;
- a replacement fluid reservoir container connected to a replacement fluid branch line branching off on an inlet side of said replacement fluid transfer pump;
- and a shutoff valve attached to said replacement fluid transfer line upstream of a branch portion;
- said drain means comprises:
- a drain line of which one end is connected to said blood purifying device and the other end opened;
- a drain transfer pump disposed in said line;
- a drain reservoir container connected to a drain branch line branching off on an outlet side of said drain transfer pump;
- and a shutoff valve attached to said drain transfer line downstream of a branch portion,
- wherein the three reservoir containers are each equipped with a fluid level sensor, said apparatus further comprising a weightmeter for weighing the said three reservoir containers at once, and a control unit for controlling the opening and closing of said shutoff valves and the pump flow rate of each of said transfer pumps.
Dependencies are inferred from the claim text.