Terumo Kabushiki Kaisha

Yoshizo Ishizuka

Tadashi Fujii

Katsuhiro Shirakawa

Fuminori Tsuboi

An electrode lead, which is used as an implantable electrode lead and a symptom of disconnection of which can be found and detected at an early stage before complete disconnection. Also, an implantable medical instrument which uses this electrode lead safely is provided. More specifically, in an implantable electrode lead obtained by connecting conductor wiresandwith large electrical resistances and conductor wiresandwith small electrical resistances parallel to each other, when one of the low-strength conductor wiresandis disconnected, a change in electrical resistance of the implantable electrode lead can be detected and informed. Hence, a symptom before total disconnection of the implantable electrode lead can be detected.

Implantable electrode lead and implantable medical instrument using the implantable electrode lead

Ultrasonographic apparatus for diagnosis

In a method and apparatus for ultrasonic measurement, an ultrasonic pulse is transmitted into a object and received as an echo signal following reflection within the object, and the acoustic characteristic of the object is measured based on object position and frequency information contained in the echo signal. The measured acoustic characteristic is representative of information relating to degree of attenuation and frequency dependence thereof inside the object and obtained from the position and frequency information contained in the echo signal. The apparatus according to this invention displays an image of the distribution of the object acoustic characteristic obtained from the measured acoustic characteristic.

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Kanagawa, Japan

Yoshizo Ishizuka