Patient position monitor

Details Patient position monitor Patient position monitor

1996-06-12

1999-08-24

Mulcahy, John

Surgery

Diagnostic testing

Measuring anatomical characteristic or force applied to or...

200DIG2, 200 6145R, 200 6152, 340573, 340689, G01C 906, G08B 2100, H01H 3502

Patent

active

059418362

ABSTRACT:
A patient position monitor having an inclinometer and a microprocessor connected to the output of the inclinometer. The inclinometer is a body axis orientation sensor having a light impermeable capsule including a cylindrical body. The longitudinal axis of the cylindrical body is parallel to the patient's body axis. The cylindrical body includes a first end portion having a circuit board with a radial array of sequentially illuminated LEDs. A light sensor is mounted on a second end portion of the cylindrical body. A light impermeable sphere disposed in the capsule between the array of LEDs and the light sensor is sized to block light emitted from a portion of the LEDs. The detection of light from the unblocked LEDs is indicative of the position of the sphere and of the orientation of the patient's body axis relative to gravity.

REFERENCES:
patent: 3163856 (1964-12-01), Kirby
patent: 4348562 (1982-09-01), Florin
patent: 4536755 (1985-08-01), Holzgang et al.
patent: 4617525 (1986-10-01), Lloyd
patent: 5038137 (1991-08-01), Lloyd
patent: 5146206 (1992-09-01), Callaway
patent: 5430435 (1995-07-01), Hoch et al.

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