Body position and activity sensor

Details Body position and activity sensor Body position and activity sensor

1996-07-10

1998-05-26

Kamm, William E.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1362

Patent

active

057557411

ABSTRACT:
A sensor that is implantable within the body of a patient that provides an indication of movement and orientation of the patient. The sensor is comprised of a cylindrical enclosure having a central electrode positioned within the cavity formed by the enclosure that is co-axial with the axis of the cylinder. One or more peripheral electrodes are positioned within the cavity and extend in a direction parallel to the central electrode. An electrolytic fluid is positioned in the enclosure so that movement of the sensor results in variations in the amount of electrolytic solution between the central electrode and the one or more peripheral electrodes. An alternating current signal is applied to the central electrode and the one or more peripheral electrodes and the resulting voltage signal is measured between the central electrode and the one or more peripheral electrodes. The voltage signal will vary depending upon the amount of solution located between the central electrode and the peripheral electrodes thereby giving an indication of the orientation of the sensor. The leads for the electrodes preferably extend out of a single surface in a single direction to permit mounting on a planar mounting plate. Further, the peripheral electrodes are preferably configured so that each point on an inner surface of the peripheral electrodes is substantially the same distance from the central electrode to prevent localized corrosion or build-up of electrostatic plating.

REFERENCES:
patent: 3701093 (1972-10-01), Pick
patent: 3743802 (1973-07-01), Avenick
patent: 4434337 (1984-02-01), Becker
patent: 4811491 (1989-03-01), Phillips et al.
patent: 4937518 (1990-06-01), Donati et al.
patent: 5010893 (1991-04-01), Sholder
patent: 5233984 (1993-08-01), Thompson
Evener et al. "Electrolytic Transducers as Monitoring Devices for Lateral Earth Movements in Civil Engineering Works" Electrolytic Transducers Monitoring Devices 1979.

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