| 摘要 |
According to the centering mechanism of this invention for an electrically bendable endoscope, the control circuit, in response to an instruction for centering, computes residual bending angles in U/D and L/R directions based on the values obtained as a result of feeding values indicated by the U/D and L/R potentiometers to an A/D converter. The control circuit conducts bending angle adjustment by bending the tip of the endoscope in directions appropriate to cancel out residual bending angles: for example, if the tip has been bent upward immediately before the centering switch is activated, the control circuit causes the tip to be bent downward, and if the tip has been bent leftward immediately before the centering switch is activated, the control circuit causes the tip to be bent rightward. Then, the bending angle is adjusted to zero.
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