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:
Aug. 22, 2000
Filed:
Aug. 28, 1997
Applicant:
Inventors:
Mitsutoshi Yaegashi, Nakai-machi, JP;
Kazuhiro Hirota, Nakai-machi, JP;
Assignee:
Terumo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ; A61B / ;
U.S. Cl.
CPC ...
600437 ; 600443 ; 600463 ;
Abstract
Disclosed is a celiac diagnostic apparatus in which the characteristics of a filter for filtering a wave reflected by a tissue inside an object are made steep, and an ultrasonic wave capable of making a high-accuracy diagnosis for the object is used. C1, C2, and C3 are constituted using variable capacitance diodes. Three LC filters, i.e., an LC filter constituted by L1 and C1, an LC filter constituted by L2 and C2, and an LC filter constituted by L3 and C3 are serially connected to constitute the filter, whose cutoff characteristics is still practical even when the cutoff frequency exceeds 20 MHz.