1
Mamoru Kaneko, Yasuhiro Ueda, Sakae Takehana, Masaya Yoshihara, Masahiko Iida, Naruto Shinkai, Kazunari Nakamura, Nobuhiko Washizuka, Yoshinao Oaki, Katsuya Suzuki: Fluorescent endoscope apparatus. Olympus Optical, Armstrong Westerman Hattori McLeland & Naughton, May 12, 1998: US05749830 (185 worldwide citation)

A fluorescent endoscope apparatus having: an endoscope that irradiates a subject portion to be observed with light transmitted through a light transmission device to obtain an object image of the subject portion to be observed; a normal observation light generating device for emitting normal light f ...


2
Nobuhiko Washizuka, Yasuhiko Oomagari, Tsuruo Hatori, Tsuyoshi Tsukagoshi, Minoru Tsuruta, Seiji Kuramoto, Shuichi Kimura, Akio Nakada, Shiro Bito, Shinichi Nishigaki, Kenji Yoshino, Keisuke Saito, Yasuo Goto: Trocar. Olympus Optical, Frishauf Holtz Goodman & Woodward, June 13, 1995: US05423848 (156 worldwide citation)

A trocar comprises an obturator having a piercing tip, and a cannula for forming a passage in tissue that is punched by the piercing tip. The cannula is formed from a flexible tube or a coil tube and transforms and libitum in accordance with the shape of the surgical tool that is to be inserted into ...


3
Seiji Kuramoto, Ryoji Masubuchi, Akio Nakada, Yasuhiko Omagari, Ichiro Nakamura, Nobuhiko Washizuka, Yoshinao Oaki: Cleaning tube apparatus for endoscope. Olympus Optical, Armstrong Westerman Hattori McLeland & Naughton, May 20, 1997: US05630795 (137 worldwide citation)

A cleaning tube apparatus for an endoscope, comprises the endoscope having an observation optical system for observing a subject part at a forward-end portion, a cleaning tube detachable with respect to said endoscope, said cleaning tube being provided with a plurality of fluid jetting openings in a ...


4
Nobuhiko Washizuka, Koji Kambara: Optical fiber assembly for an endoscope. Olympus Optical, March 21, 1989: US04813400 (34 worldwide citation)

An endoscope, through which the interior of a body cavity can be observed, has an operation section and an insertion section. The proximal end of the insertion section is connected to the distal end of the operation section. A conduit-type guide fiber is coupled at one end to the distal end of the i ...


5
Masahiro Kawashima, Koji Kambara, Tsuruo Hatori, Nobuaki Akui, Nobuhiko Washizuka, Kunio Ohno, Yoshio Tashiro: Insertion section of an endoscope. Olympus Optical, July 12, 1988: US04756303 (30 worldwide citation)

In an insertion section of an endoscope according to the present invention, a plurality of flexible segment tubes, each having a predetermined length and a predetermined inside diameter, constitute necessary ducts for the endoscope, individually. The ducts include an image guide duct, light guide du ...


6
Nobuhiko Washizuka: Endoscope with a shock absorber. Olympus Optical, Kenyon & Kenyon, March 27, 1990: US04911147 (5 worldwide citation)

An endoscope provided with an elastic member between an optical lens and the distal end portion of an inserting portion of the endoscope, the optical lens being fixed to the distal end portion via the elastic member. Shock waves for crushing a calculus transmitted to the optical lens can be absorbed ...