Title:
ENDOSCOPE
Document Type and Number:
Japanese Patent JP2015204972
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an endoscope in which the screw-in force (torque) applied repeatedly each time a treatment instrument (treatment instrument attachment) is mounted to a mouthpiece member is distributed to thereby prevent the destruction of a collar member supporting the mouthpiece member and also the trouble that the mouthpiece member rotates relative to the collar member.SOLUTION: A non-circular raised fitting part includes: a circular raised cylindrical surface formed of a portion of a cylindrical surface with the axis of a metallic mouthpiece member as its center; and a plurality of raised detents projecting outward in a radial direction of an extension surface of the circular raised cylindrical surface in a region where the circular raised cylindrical surface is not present. A non-circular recessed fitting hole includes: a circular recessed cylindrical surface which is engaged with the circular raised cylindrical surface; and a plurality of recessed detents which project outward in the radial direction of an extension surface of the circular recessed cylindrical surface and which are engaged with the raised detents.
Inventors:
NUMAZAWA YOSHINOBU
Application Number:
JP2014086524A
Publication Date:
November 19, 2015
Filing Date:
April 18, 2014
Export Citation:
Assignee:
HOYA CORP
International Classes:
A61B1/00; G02B23/24
Domestic Patent References:
| JP2011010672A | 2011-01-20 | |||
| JP2013188415A | 2013-09-26 | |||
| JP2004101132A | 2004-04-02 |
Attorney, Agent or Firm:
Kunio Miura
Kuniyo Miura
Kuniyo Miura