Right angle detachable prism assembly for borescope

Details Right angle detachable prism assembly for borescope Right angle detachable prism assembly for borescope

1986-12-29

1988-03-01

Grieb, William H.

Surgery

Truss

Perineal

350287, A61B 100, G02B 718

Patent

active

047278595

ABSTRACT:
A detachable prism assembly for a small-diameter borescope has a generally cylindrical housing with an open end that fits over a viewing head of the borescope, a prism, and a sliding prism holder within the housing. A spring urges the holder and prism proximally away from the distal end of the housing, and into contact with the front surface of the borescope head. The spring also urges a projection in the assembly into engagement with a corresponding recess in the periphery of the borescope viewing head. A manually actuable member on the detachable prism assembly must be moved by the user to move the projection out of engagement with the recess to permit detachment of the prism assembly from the borescope. The prism assembly can be attached only in its proper orientation, and cannot fall off the borescope head while in use.

REFERENCES:
patent: 2949071 (1960-08-01), Foures
patent: 3561432 (1971-02-01), Yamaki et al.
patent: 3596863 (1971-08-01), Kaspareck
patent: 4571028 (1986-02-01), Ziegler et al.

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