Title:
SUCTION MECHANISM FOR ENDOSCOPE
Document Type and Number:
Japanese Patent JP3282081
Kind Code:
B2
Abstract:
PURPOSE: To prevent the hand and fingers from being stained by the filth in the body, etc., without allowing the filth in the body sucked into a valve changeover operating part into the endoscope by providing a selector valve for changing over a suction side passage part to a non-operation state communicated with the atm. and a suction state shut off from the atm. and providing the valve changeover operating part within the body operating part.
CONSTITUTION: A piston 35 falls in a housing 34 and a hydraulic working chamber 38 shrinks when a pressing operating part 39 of the valve changeover operating part 33 is pushed down. A pressure oil is supplied into an oil chamber 36 via a hydraulic piping 37 and a 1st valve body 24a and a 2nd valve body 24b are displaced. A toric projecting line 21 changes over to a suction state to close an atm. releasing port 28 through a communicating hole 27. A negative pressure acts on the suction passage 5 and the filth in the body is sucked from a suction port 4 and is sent into a suction container 8. A piston 25 is reset to its home position by the effect of a resetting spring 40 and the valve member 24 consisting of the 1st valve body 24a and the 2nd valve body 24b is changed over to the non-operation state by the effect of resetting springs 31, 32 when the pressing force on a press operating part 39 is released.
Inventors:
Shuji Komi
Application Number:
JP3296592A
Publication Date:
May 13, 2002
Filing Date:
January 24, 1992
Export Citation:
Assignee:
Fuji Photo Optical Co., Ltd.
International Classes:
A61B1/00; G02B23/24; (IPC1-7): A61B1/00; G02B23/24
Domestic Patent References:
| JP399627A | ||||
| JP332633A | ||||
| JP5979103U | ||||
| JP56127701U | ||||
| JP180102U |
Attorney, Agent or Firm:
Shunji Kagei