Electrically bendable endoscope apparatus having controlled fixe

Details Electrically bendable endoscope apparatus having controlled fixe Electrically bendable endoscope apparatus having controlled fixe

1992-12-10

1995-03-28

Apley, Richard J.

Surgery

Truss

Perineal

128 6, A61B 104

Patent

active

054007690

ABSTRACT:
In response to the operation of a bending operation switch, a controlling circuit switches on/off a plurality of transistors of a driving circuit, controls the polarity of a voltage applied to a motor or does not apply the voltage and, on the other hand, controls the voltage applied to the motor to be on/off while monitoring the rotating speed of the motor through an encoder to thereby drive and control the motor at a predetermined speed which can be variably set steppedly so that an endoscope bendable part may be bent at a fixed speed.

REFERENCES:
patent: 4559928 (1985-12-01), Takayama
patent: 4930494 (1990-06-01), Takehana et al.
patent: 4941454 (1990-07-01), Wood et al.
patent: 4982725 (1991-01-01), Hibino et al.
patent: 5060632 (1991-10-01), Hibino et al.

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