Biomagnetism measurement device

Patent metadata

Field	Value
Publication number	US-11666261-B2
Application number	US-201816756079-A
Country	US
Kind code	B2
Filing date	Aug 21, 2018
Priority date	Oct 16, 2017
Publication date	Jun 6, 2023
Grant date	Jun 6, 2023

Abstract

An objective of the present invention is to provide a biomagnetism measurement device capable of three-dimensionally acquiring magnetism information of a living body with ease. This biomagnetism measurement device (101) is for measuring biomagnetism using a plurality of magnetic sensors (1) at the same time. The plurality of magnetic sensors (1) is retained by a retaining part (10) (a first retaining portion [11] and a second retaining portion [12]) so as to have different measurement directions. Furthermore, the retaining part (10) (the first retaining portion [11] and the second retaining portion [12]) has arranged thereon the plurality of magnetic sensors (1) so as to enable biomagnetism to be measured at a plurality of sites at the same time. The magnetic sensor (1) comprises a means for detecting the biomagnetism in a temperature environment commensurate with normal temperature.

First claim

The invention claimed is:

1. A biomagnetism measuring device, comprising:
a plurality of magnetic sensors configured for measuring biomagnetism simultaneously; and
a holder portion,
wherein the plurality of magnetic sensors is held by the holder portion so as to have different measuring directions,
wherein the plurality of magnetic sensors is provided at the holder portion so as to be capable of measuring biomagnetism of multiple sites simultaneously, and
wherein the plurality of magnetic sensors comprises a sensor that detects the biomagnetism in a thermal environment commensurate with normal temperature with no need for cooling, and
wherein the holder portion comprises:
a first holder portion in which the plurality of magnetic sensors is arranged two-dimensionally at positions in a (x-y) coordinate substantially parallel to a body surface of a living organism,
a second holder portion in which the plurality of magnetic sensors is arranged two-dimensionally at positions in a coordinate different from the (x-y) coordinate,
a third holder portion in which the plurality of magnetic sensors is arranged two-dimensionally,
an open/close mechanism that enables the third holder portion to open and close with respect to the first holder portion or the second holder portion, and
a moving mechanism that enables the third holder portion to move toward the first holder portion or the second holder portion.

2. The biomagnetism measuring device according to claim 1 , wherein a first holder face of the first holder portion on which the plurality of magnetic sensors is arranged, and a second holder face of the second holder portion on which the plurality of magnetic sensors is arranged are arranged at a substantially right angle in a cross-sectional view.

3. The biomagnetism measuring device according to claim 1 , wherein the plurality of magnetic sensors comprises a SQUID sensor.

4. The biomagnetism measuring device according to claim 1 , wherein a plurality of holding frames that holds the plurality of magnetic sensors removably or movably is arranged in an array in the holder portion.

5. The biomagnetism measuring device according to claim 1 , wherein a plurality of rails that slidably holds the plurality of magnetic sensors is arranged in the holder portion.

6. The biomagnetism measuring device according to claim 1 , wherein the holder portion is provided with a moving mechanism that moves the plurality of magnetic sensors individually in a contact/separation direction with respect to the living organism.

7. The biomagnetism measuring device according to claim 1 , wherein the holder portion is composed of a non-magnetic material.

8. The biomagnetism measuring device according to claim 1 , wherein the holder portion is composed of a flexible material.

9. A method for measuring biomagnetism simultaneously with a plurality of magnetic sensors and a holder portion, the method comprising:
measuring biomagnetism simultaneously by means of the plurality of magnetic sensors,
wherein the plurality of magnetic sensors has different measuring directions,
wherein the plurality of magnetic sensors is provided so as to be capable of measuring biomagnetism of multiple sites simultaneously, and
wherein the plurality of magnetic sensors comprises a sensor that detects the biomagnetism in a thermal environment commensurate with normal temperature with no need for cooling, and
wherein the holder portion holds the plurality of magnetic sensors so as to have different measuring directions and the holder portion comprises:
a first holder portion in which the plurality of magnetic sensors is arranged two-dimensionally at positions in a (x-y) coordinate substantially parallel to a body surface of a living organism,
a second holder portion in which the plurality of magnetic sensors is arranged two-dimensionally at positions in a coordinate different from the (x-y) coordinate;
a third holder portion in which the plurality of magnetic sensors is arranged two-dimensionally,
an open/close mechanism that enables the third holder portion to open and close with respect to the first holder portion or the second holder portion, and
a moving mechanism that enables the third holder portion to move toward the first holder portion or the second holder portion.

10. The method according to claim 9 , wherein measuring biomagnetism comprising detecting a plurality of directional components for biomagnetism of one site by means of the plurality of magnetic sensors.

Assignees

• Univ Nat Corp Tokyo Medical & Dental
• Tdk Corp

Inventors

• Kawabata Shigenori
• Shibuya Tomohiko

Classifications

• A61B5/242 Primary

  Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents · CPC title

• A61B2562/046

  in a matrix array · CPC title

• G01R33/0094 Primary

  Sensor arrays · CPC title

• G01R33/0354

  SQUIDS · CPC title

• G01R33/0005

  Geometrical arrangement of magnetic sensor elements; Apparatus combining different magnetic sensor types (G01R33/0206 takes precedence) · CPC title