# US 2019/0167136 A1 · Biomagnetism measuring device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0167136 A1 - Document ID: US20190167136A1 - Status: Published application - Kind: A1 - Application number: 16/321,852 - Filed: 2017-08-01 - Published: 2019-06-06 - Earliest claimed: 2016-08-02 - Assignees: National University Corporation Tokyo Medical and Dental University; TDK Corporation - Applicants: National University Corporation Tokyo Medical and Dental University; TDK Corporation - Inventors: Shigenori Kawabata; Takato Fukui; Tomohiko Shibuya - Web page: https://patentgrep.com/patent/US20190167136A1 ## CPC - A61B 5/242: Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents - A61B 5/05: Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves (measuring movement of the entire body or parts thereof A61B5/11; detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof A61B5/24) - A61B 5/251: Means for maintaining electrode contact with the body - A61B 5/6843: {Monitoring or controlling sensor contact pressure} - G01R 33/02: Measuring direction or magnitude of magnetic fields or magnetic flux (G01R33/20 takes precedence) - G01R 33/09: Magnetoresistive devices - A61B 5/0205: Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition - A61B 5/0816: {Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00)} - G01R 33/04: using the flux-gate principle - G01R 33/063: {Magneto-impedance sensors; Nanocristallin sensors} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract The objective of the present invention is to provide a biomagnetism measuring device capable of accurately detecting biomagnetism regardless of the object to be measured. This biomagnetism measuring device (1) is provided with: a plurality of magnetic sensors (11) which detect biomagnetism of a living body (100); a retaining portion (12) including retaining holes (12a) which retain the plurality of magnetic sensors (11) with freedom to move individually; and a movement mechanism which moves the magnetic sensors (11) individually in a contacting/separating direction causing the magnetic sensors (11) to come into contact with or separate from the living body (100). As movement mechanisms there may be mentioned, for example, a pneumatic/hydraulic mechanism (20), a resilient body mechanism (30), a screw mechanism (40) and a gear mechanism (50). ## Claims ### Claim 1 A biomagnetism measuring device comprising: a plurality of magnetic sensors that detect biomagnetism; a retaining portion including retaining holes that hold the plurality of magnetic sensors such that the magnetic sensors can individually move freely; and a movement mechanism that moves the magnetic sensors in directions that approach and separate from a subject to be measured causing the magnetic sensors to come into contact with or separate from the subject to be measured. ### Claim 2 (depends on 1) The biomagnetism measuring device according to claim 1, wherein the movement mechanism is at least one of a pneumatic mechanism, a hydraulic mechanism, a resilient body mechanism, a screw mechanism and a gear mechanism. ### Claim 3 (depends on 1) The biomagnetism measuring device according to claim 1, wherein the movement mechanism is made of a nonmagnetic material. ### Claim 4 (depends on 1) The biomagnetism measuring device according to claim 1, further comprising control means for controlling, on the basis of externally acquired biological information, movement of the magnetic sensors using the movement mechanism. ### Claim 5 (depends on 1) The biomagnetism measuring device according to claim 1, wherein the magnetic sensors further include contact detection means for detecting contact with the subject to be measured. ### Claim 6 (depends on 1) The biomagnetism measuring device according to claim 1, wherein the magnetic sensors further include biological information acquisition means for acquiring biological information. ### Claim 7 (depends on 1) The biomagnetism measuring device according to claim 1, wherein the magnetic sensors are disposed directly beneath the subject to be measured. ### Claim 8 (depends on 1) The biomagnetism measuring device according to claim 1, wherein the retaining portion is made of a flexible material. ### Claim 9 (depends on 2) The biomagnetism measuring device according to claim 2, wherein the movement mechanism is made of a nonmagnetic material. ### Claim 10 (depends on 2) The biomagnetism measuring device according to claim 2, further comprising control means for controlling, on the basis of externally acquired biological information, movement of the magnetic sensors using the movement mechanism. ### Claim 11 (depends on 3) The biomagnetism measuring device according to claim 3, further comprising control means for controlling, on the basis of externally acquired biological information, movement of the magnetic sensors using the movement mechanism. ### Claim 12 (depends on 2) The biomagnetism measuring device according to claim 2, wherein the magnetic sensors further include contact detection means for detecting contact with the subject to be measured. ### Claim 13 (depends on 3) The biomagnetism measuring device according to claim 3, wherein the magnetic sensors further include contact detection means for detecting contact with the subject to be measured. ### Claim 14 (depends on 4) The biomagnetism measuring device according to claim 4, wherein the magnetic sensors further include contact detection means for detecting contact with the subject to be measured. ### Claim 15 (depends on 2) The biomagnetism measuring device according to claim 2, wherein the magnetic sensors further include biological information acquisition means for acquiring biological information. ### Claim 16 (depends on 3) The biomagnetism measuring device according to claim 3, wherein the magnetic sensors further include biological information acquisition means for acquiring biological information. ### Claim 17 (depends on 4) The biomagnetism measuring device according to claim 4, wherein the magnetic sensors further include biological information acquisition means for acquiring biological information. ### Claim 18 (depends on 5) The biomagnetism measuring device according to claim 5, wherein the magnetic sensors further include biological information acquisition means for acquiring biological information. ### Claim 19 (depends on 2) The biomagnetism measuring device according to claim 2, wherein the magnetic sensors are disposed directly beneath the subject to be measured. ### Claim 20 (depends on 3) The biomagnetism measuring device according to claim 3, wherein the magnetic sensors are disposed directly beneath the subject to be measured.