Biomagnetic field measurement apparatus
US6275719A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1999 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Apr 19, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/02411
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A biomagnetic field measurement apparatus comprises, a plurality of magnetometers each having a SQUID sensor and a detection coil and each detecting a magnetic field generated from a heart of a fetus in a mother; a processor processing magnetic field wave forms detected by the magnetometers; and a display displaying results obtained by the processor. The processor estimates a position of a current dipole from the magnetic field wave forms, and processes projecting the position of the current dipole on a first plane parallel to a plane on which one ends of the magnetometers are disposed on processes projecting the position of the current dipole on a second plane perpendicular to the plane on which the one ends of the magnetometers are disposed. The position of the current dipole projected on the first plane and the position of the current dipole projected on the second plane are displayed on the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.