Biomagnetometer with whole head coverage of a seated or reclined subject
US5471985A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Aug 1, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/245
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A biomagnetometer includes a dewar vessel having a helmet-shaped recess at the lower end of its body. The recess is angled at about 45 degrees to the dewar body axis of the dewar vessel. Biomagnetic sensors are positioned within the interior of the dewar vessel body around the periphery of the recess. The angled recess permits the biomagnetometer to be used with subjects whose heads are inclined from 0 to 90 degrees to the horizontal by pivoting the dewar vessel over an angle of from -45 degrees to +45 degrees to the vertical, without spilling the cryogenic fluid within the dewar or causing excessive evaporation of the cryogenic fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.