Endoscope and instrument lifting operation device for the same

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United States of America Patent

PATENT NO 9089263
SERIAL NO

12880570

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Abstract

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An instrument lifting operation device including: an operation wire drawing mechanism configured to draw an proximal end of an operation wire connected to an instrument lifting piece; and a braking mechanism configured to restrict movement of the operation wire toward the tip side, wherein the braking mechanism includes: a fixed wall; and a spring arranged to be able to rotate about an axis together with an instrument lifting operation member in a state where the spring is elastically pressed against an inner circumferential surface of the fixed wall. When the instrument lifting operation member is operated to rotate about the axis, the wire coupling member rotates about the axis and the operation wire moves forward and backward in a state where the spring contacts and slides on the inner circumferential surface of the fixed wall to generate frictional resistance at a contacting part.

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Patent Owner(s)

Patent OwnerAddress
HOYA CORPORATION6-10-1 NISHI-SHINJUKU SHINJUKU-KU TOKYO 1608347 ?1608347

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maruyama, Yoshinori Saitama, JP 24 326

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