The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 26, 2009

Filed:

Aug. 22, 2005
Applicants:

Masatoshi Tarumi, Haibara-gun, JP;

Yoshihiro Mori, Haibara-gun, JP;

Masahiro Toyoda, Haibara-gun, JP;

Tomoya Murakami, Haibara-gun, JP;

Inventors:

Masatoshi Tarumi, Haibara-gun, JP;

Yoshihiro Mori, Haibara-gun, JP;

Masahiro Toyoda, Haibara-gun, JP;

Tomoya Murakami, Haibara-gun, JP;

Assignee:

Nikkiso Co., Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 61/30 (2006.01); A61M 1/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

A blood purification device confirms whether a specific peak is provided by e.g. an ultrafiltration pump, to concentrate the blood or not and also accurately measures a blood re-circulation with a minimum of parameters providing a ratio of re-circulating blood. The blood purification device composed of arterial blood circuit routeand venous blood circuit route, blood pump, dialyzer, water removal pumpproviding the specific peak in the variation of blood concentration by removing water rapidly, and a detector detecting the specific peak, can measure the blood re-circulation thereby. The re-circulating blood flowing is the blood which was introduced again to arterial blood circuit routeafter it had been returned to a patient from venous blood circuit route. A first detectorinstalled in the arterial blood circuit routeand a second detectorinstalled in venous blood circuit route detector.


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