Nec Corporation

Yokogawa Electric Corporation

Nec Medical Systems, Ltd.

Minoru Nakagawara

Kenta Mikuriya

Hideo Hirukawa

Akira Ohya

Shoji Uehara

Ken-Ichi Yamakoshi

A cuff-block for a finger arterial blood pressure monitor is able to relieve a blood flow impediment and the hindrance of a finger motion at the measuring site during the finger arterial blood pressure monitoring. A disk-like cuff () for local pressurization is attached over a finger artery () on a proximal finger portion () of a measured finger (), this cuff () is held by a cuff-holding portion () of an annular cuff-fixing member () put from the tip end portion of the measured finger (), and the cuff-fixing member () is supported on the measured finger () with local supportings by forked supporting points () of the cuff-fixing member () placed on respectively portions of a proximal joint () and a medial one ().

Cuff-block for finger arterial blood pressure monitor

A constant current having high frequency and a known small current value is flown by a current supplying electrode portion (20) through a chest of a living body, variations of impedance at respective positions of the chest are detected by a voltage detector portion (30) and output as detected signals in relation to the respective positions of the chest and a mapping and display portion 40 performs a signal processing on the basis of the detected signals and produces a map corresponding thereto and displays it in a two dimensional plane. Therefore, it is possible to monitor hemodynamics in a wide area of the living body in two dimensional coordinates.

Hemodynamics monitor

A test system for optical disks, comprising a spindle motor for clamping and rotating an optical disk at a constant speed; an encoder for generating a pulse output corresponding to the angle of rotation of the motor; a measuring head comprising focus and tracking servo mechanisms for causing the focal point of a laser beam irradiating the disk to follow the guide groove thereof, and a displacement detector for optically detecting the displacement of a focusing lens driven by the servo mechanisms; the measuring head being operative to generate an output signal proportional to the displacement of the focusing lens; a feed mechanism for moving the measuring head in the radial direction of the disk; a control circuit for controlling the operations of the motor, the servo mechanisms and the feed mechanism; an analog to digital converter for converting the output of the measuring head at a timing according to the pulse output of the encoder; and a computer for commanding the control circuit and for computing the output of the analog to digital converter to determine the shape of the disk, whereby displacement of the focusing lens is directly detected by the displacement detector.

Test system for optical disks

Growing community of inventors

Tokyo, Japan

Minoru Nakagawara