| US 7,537,687 B2 | ||
| Hemodialysis device | ||
| Masahiro Toyoda, Haibara-gun (Japan); and Yasushi Takakuwa, Haibara-gun (Japan) | ||
| Assigned to Nikkiso Co., Ltd., Tokyo (Japan) | ||
| Filed on Oct. 07, 2005, as Appl. No. 11/246,385. | ||
| Claims priority of application No. 2004-301108 (JP), filed on Oct. 15, 2004. | ||
| Prior Publication US 2006/0081517 A1, Apr. 20, 2006 | ||
| Int. Cl. C02F 1/44 (2006.01); A61M 1/16 (2006.01) | ||
| U.S. Cl. 210—85 [210/321.6; 604/6.08; 604/6.09] | 11 Claims |
| 1. A hemodialysis device for purifying blood collected from a patient comprising;
a blood circuit comprising an arterial blood circuit and a venous blood circuit which circulates the blood extracorporeally;
a blood pump disposed in the arterial blood circuit;
a blood purification device that is connected between the arterial blood circuit and the venous blood circuit and purifies
the blood flowing in the blood circuit;
a main body having a dialysate inlet line and a dialysate outlet line which inlet and outlet dialysate to and from the blood
purification device, respectively;
a voltage adding device comprising one electrode and another electrode adding voltage to the blood flowing in the blood circuit
between the electrodes;
a measuring device detecting electric potentials of at least two positions accompanying the voltage added by the voltage adding
device; and
a monitor calculating a calculated electric potential by comparing each electric potential detected by the measuring device
and monitoring a detachment of an arterial blood needle or a venous blood needle from the patient;
wherein one electrode of the voltage adding device is disposed between the arterial blood needle in the arterial blood circuit
and the blood pump and the other electrode is disposed in the dialysate inlet line or the dialysate outlet line.
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