Measuring structure for magneto encephalographic equipment with a superconducting magnetic-shield

US7881760B2 · kind B2 · utility

Assignee

• NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY · JP

Inventors

• Toshiaki Matsui · Koganei, JP
• Hiroshi Ohta · Wako, JP

Key dates

• Filing date: Jun 20, 2007
• Grant date: Feb 1, 2011
• Expiry date: Jul 18, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S505/846
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A magneto-encephalographic equipment superconducting magnetic-shield comprising a vacuum-tight body comprising an outer enclosure wall, a first inner enclosure wall inserted in the outer enclosure wall to define a upper closed space, and a second inner enclosure wall to define a lower open space. The first and second inner enclosure walls are arranged with the bottom of the first inner enclosure wall facing the ceiling of the second inner enclosure wall. A first enclosure of HTSC and a second enclosure of high-permeability material are concentrically arranged in the annular vacuum space defined between the first and second inner enclosure walls and the outer enclosure wall. A head-accommodating area is delimited by the hollow partition between, the bottom of the first inner enclosure wall and the ceiling of the second inner enclosure wall both facing each other, and a plurality of SQUID sensors are arranged in the upper closed space, encircling the head-accommodating area.