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.
Patent No.:
Date of Patent:
Dec. 15, 2009
Filed:
Feb. 11, 2004
Yasuhiro Kuroda, Tokushima, JP;
Yohsuke Kinouchi, Tokushima, JP;
Masatake Akutagawa, Tokushima, JP;
Toshiya Okahisa, Tokushima, JP;
Yoshiaki Ohnishi, Tokushima, JP;
Yasuhiro Kuroda, Tokushima, JP;
Yohsuke Kinouchi, Tokushima, JP;
Masatake Akutagawa, Tokushima, JP;
Toshiya Okahisa, Tokushima, JP;
Yoshiaki Ohnishi, Tokushima, JP;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A method is provided for detecting filter clogging which are able to keep track of the filter clogging with precision and in detail. At least one pressure selected from the group consisting of a pressure Pa in a blood inflow portion (), a pressure Pv in a blood outflow portion (), a pressure Pfin a filtrate inflow portion (), and a pressure Pfin a filtrate outflow portion () is measured continuously, then a variation (pressure waveform) of the pressure is analyzed, a clogging of a filter () is detected using the analyzed result. Thereby a clogging of a filter is detected early. As a result, it is possible to prevent from developing of the filter clogging by controlling a dosage amount of anti-coagulant properly and changing a flow rate of blood. The variation of the pressure wave may be analyzed by subjecting the variable to Fast Fourier Transform.