Memsic, Inc.

Kenichi Katsumoto

Alexander Dribinsky

Hongzhi Sun

John Newton

A multiple-axis accelerometer for use with a blood pressure monitor or a blood pressure measuring device (BPM) to determine an inclination associated with the point of fixture. The accelerometer is attached to a substrate that is structured and arranged in a vertical or substantially vertical plane. The accelerometer includes a first accelerometer portion that is adapted to generate a first output based on acceleration in a first direction in the vertical plane (A); and a second accelerometer portion that is adapted to generate a second output based on acceleration in a second direction, orthogonal to the first direction, in the vertical plane (A). The first and second outputs provide a measure of the inclination about an axis that is orthogonal or substantially orthogonal to the vertical plane. The measured inclination is a roll angle (&#x3b3;) is given by the formula:&#x3b3;=arctan().The polarity of the roll angle determines dynamically whether the point of fixture is to the right or the left appendage or extremity.

Devices, systems, and methods for accurate blood pressure measurement

A system and device for detecting inclination that eliminates the need to compensate for the acceleration of the vehicle is disclosed. The system includes a multi-axis acceleration sensing device that is fixedly attached to the object such that each sensing axis of the multi-axis acceleration sensing device lies in a common plane with the forward-aft axis of the object and the sensing axes are orthogonal to one another and each sensing axis is oriented 45 degrees from the forward-aft axis.

Growing community of inventors

Tokyo, Japan

Kenichi Katsumoto