Surgery – Truss – Pad
Patent
1991-08-28
1993-11-30
Cohen, Lee S.
Surgery
Truss
Pad
324248, 128782, A61B 505
Patent
active
052656098
ABSTRACT:
An apparatus for making magnetic measurements of the human body includes a biomagnetometer having a magnetic field sensing coil that measures magnetic fields arising from a selected portion of a body. A position monitor used in conjunction with the biomagnetometer produces no magnetic fields that can interfere with the taking of magnetic field measurements, and can operate simultaneously with the taking of magnetic field measurements. The position monitor includes an optical target mounted on the selected portion of the body, the optical target having a variation in light reflectance across the target. An input optical guide directs a beam of light at the target, an output optical guide collects a reflected beam of light from the target, and a limit detector receives the beam of light from the output optical guide and determines whether the intensity of the received light varies outside of predetermined limits.
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patent: 4793355 (1988-12-01), Crum et al.
patent: 4945916 (1990-08-01), Kretchmer et al.
patent: 4972836 (1990-11-01), Schenck et al.
patent: 5103823 (1992-04-01), Acharya et al.
Buchanan D. Scott
Riley Scott
Biomagnetic Technologies, Inc.
Cohen Lee S.
Garmong Gregory
Pfaffle K. M.
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