Hand-held compact diagnostic device

Details Hand-held compact diagnostic device Hand-held compact diagnostic device

1993-09-03

1995-07-04

Apley, Richard J.

Surgery

Specula

Laryngoscope

362109, 362804, 403 59, 403 93, 403103, A61B 1227

Patent

active

054291194

ABSTRACT:
A hand-held compact diagnostic device is provided with a pair of instrument heads each requiring an independent source of illumination. The instrument heads may be rotated into a fully extended position and once therein, may be smoothly turned through 360 degrees in consecutive ninety degree intervals to accommodate any preferred orientation desired by the user. Each instrument head is biased in the fully extended position and a rotated closed position. Each instrument head is also adjustably biased to an aligned position for proper closure by the interaction of an adjustment collar with a pair of ball detents. The adjustment collar further biases each head in three additional positions at ninety degree intervals for use when fully extended. A pair of central terminals maintain continuous contact between each rotatable head of the device while a pair of radial terminals are in electrical contact only when the instrument head is in a fully extended position. When the instrument head is rotated into the closed position, the radial terminals disengage to open the circuit between the source of illumination in the instrument head and a battery source contained within the device.

REFERENCES:
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patent: 1900906 (1933-03-01), Brown
patent: 3812847 (1974-05-01), Moore et al.
patent: 4190982 (1980-03-01), Rahmstorf
patent: 4208703 (1980-06-01), Orr
patent: 4878156 (1989-10-01), Hallings et al.
patent: 4968282 (1990-11-01), Robson et al.
patent: 4991069 (1991-02-01), Tiller
patent: 5062179 (1991-11-01), Huang
patent: 5278739 (1994-01-01), Gammache

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