Title:
【発明の名称】硬性内視鏡
Document Type and Number:
Japanese Patent JP2615048
Kind Code:
B2
Abstract:
PURPOSE:To use a treatment jig having a large diameter, by providing a solid image pickup element to the leading end part of an insert part and making the outer diameter of the insert part on the base part side thereof smaller than that of the leading end part of the insert part and increasing the treatment jig passage formed in the gap between said small diameter part and the inner peripheral surface of a sheath. CONSTITUTION:In a rigid endoscope 1, a solid image pickup element 40 is provided to the leading end part 31 of an insert part 11 as an image pickup means and the outer diameter of the small diameter part 32 on the base part side of the insert part 11 is made smaller than that of the leading end part 31 of said insert part 11. A signal wire 45 and a light guide 36 are inserted through the small diameter part 32 but an optical image transmitting means such as a relay lens system or an image guide fiber is not inserted therethrough and, therefore, said small diameter part 32 can be made fine. The passage of a treatment jig 55 formed to the space between the small diameter part 32 and the inner peripheral surface of a sheath 2 can be made large and the treatment jig 55 having a large diameter can be used without using the sheath 2 having a large diameter. The image of an object due to illumination light is formed on the solid image pickup element 40 by an objective lens system 39 and the read signal is inputted to the signal processing circuit provided in a control apparatus 21.
Inventors:
Tetsumaru Kubota
Tadao Hagino
Nakamura Takeaki
Minoru Okabe
Toda Masato
Teruaki Sugada
Mototsugu Ogawa
Karasawa Hitoshi
Hiroyuki Kusunoki
Shinichi Nishigaki
Tadao Hagino
Nakamura Takeaki
Minoru Okabe
Toda Masato
Teruaki Sugada
Mototsugu Ogawa
Karasawa Hitoshi
Hiroyuki Kusunoki
Shinichi Nishigaki
Application Number:
JP12229287A
Publication Date:
May 28, 1997
Filing Date:
May 18, 1987
Export Citation:
Assignee:
Olympus Optical Co., Ltd.
International Classes:
A61B1/00; A61B1/04; (IPC1-7): A61B1/00; A61B1/00; A61B1/04
Domestic Patent References:
JP5781320A | ||||
JP61126517A | ||||
JP5351782U | ||||
JP5628964Y2 |
Attorney, Agent or Firm:
Susumu Ito