BIOMAGNETISM MEASUREMENT DEVICE AND METHOD THEREOF

PROBLEM TO BE SOLVED: To reduce cost and space in obtaining biological information with a magnetic sensor.SOLUTION: A magnetic sensor (32) employs TMR elements for measuring weak magnetism at ordinary temperatures without cooling, in particular, using liquefied gas. A plurality of the magnetic senso...

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Bibliographic Details
Main Authors NISHIKAWA TAKAO, TSUZUKI SAIICHI, SATO KAZUMUTSU, FUKUDA TAKUMI, HOSOE HIDE, MASUDA SATOSHI
Format Patent
LanguageEnglish
Published 24.05.2012
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
TESTING
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Summary:PROBLEM TO BE SOLVED: To reduce cost and space in obtaining biological information with a magnetic sensor.SOLUTION: A magnetic sensor (32) employs TMR elements for measuring weak magnetism at ordinary temperatures without cooling, in particular, using liquefied gas. A plurality of the magnetic sensors (32) are disposed on a biological body 2, while a cover member 4 is disposed so as to cover the magnetic sensors (32) to shield the magnetic sensors and portions to be measured from an external magnetic field. Thus, there is no need to cool the sensors by using the liquefied gas unlike a SQUID (Superconducting QUantum Interference Device) which is a conventional device for measuring weak currents in the biological body, and there is no need to magnetically shield the whole room, thereby drastically reducing cost and space and dramatically facilitating maintenance. Furthermore, no insulating member is needed which has been necessary in the SQUID, and the sensors and the biological body are brought close to each other to prevent displacement as seen in the SQUID, and crossing of magnetic fields is minimized, thereby also improving position resolution.
Bibliography:Application Number: JP20100248234