Stephen R James

US Patent:

54422892, Aug 15, 1995

Filed:

Oct 27, 1992

Appl. No.:

7/967217

Inventors:

Mark S. DiIorio - Del Mar CA
Eugene C. Hirschkoff - Leucadia CA
Richard T. Johnson - San Diego CA
D. Scott Buchanan - Escondido CA
Stephen O. James - San Diego CA
Douglas Paulson - Del Mar CA
William C. Black - Del Mar CA

Assignee:

Biomagnetic Technologies, Inc. - San Diego CA

International Classification:

G01R 33035
A61B 505
H01F 606

US Classification:

324248

Abstract:

A biomagnetometer includes a magnetic field sensor unit having a magnetic field pickup coil. A vessel contains the sensor unit. The vessel includes a flexible contact face with the magnetic field sensor unit mounted in the interior of the vessel adjacent to the flexible contact face. Insulation at the flexible contact face of the vessel prevents excessive heat flow through the flexible contact face. Pickup units using this structure can be connected together into flexible or rigid arrays. In operation, the pickup coil is cooled to a temperature of less than its superconducting transition temperature. A detector measures the magnitude of magnetic fields sensed by the sensor unit.