Electrically bendable endoscope

Abstract

In the present invention, a logical block of an FPGA 56 is configured by a serial communication unit 100, a serial communication control portion 101, an EEPROM controller 102, an abnormal signal processing portion 103, an LED controller 104, an operation mode controller 105, a DPRAM 106, a clutch signal input portion 107, a jig substrate input output portion 108, a RAM 109, a motor controller 110, a motor drive waveform generating portion 111, an RL (right and left) motor current F / B portion 112, a UD (up and down) motor current F / B portion 113, a potentiometer control portion 114, a thermistor control portion 115, an RL encoder control portion 116, a UD encoder control portion 117, and an FPGA block abnormality monitoring portion 118. With the above described configuration, it is possible to continue a bending operation even when a trouble occurs in a part of functions of the bending control portion.

Description

technical field [0001] The present invention relates to an electric bending endoscope that electrically bends a bending portion to a state corresponding to an absolute position signal by operating a bending operation instructing portion that outputs an absolute position signal. Background technique [0002] In recent years, endoscopes for observing organs in body cavities by inserting a long and thin insertion portion into body cavities, and performing various treatments using treatment instruments inserted into treatment instrument channels as necessary are widely used. [0003] In this endoscope, generally, a bending portion that bends up and down / left and right is provided on the distal end side, and the bending portion is bent in a desired direction by pulling / relaxing a bending wire connected to the bending portion. [0004] Generally, the bending wires are manually operated, but in recent years, for example, as disclosed in Japanese Patent Application Laid-Open No. 200...

AI Technical Summary

Problems solved by technology

[0007] However, in conventional electric bending endoscopes, a microcomputer (such as a CPU or MPU) is generally used as the servo control of the motor control of the bending control unit, and the response speed of the motor is controlled in this microcomputer. However, since sequential processing is performed in the microcomputer, when some processing functions stop, all functions stop, which hinders the bending operation and complicates the inspection as a whole.

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