Patents by Inventor Shinichi Nishigaki

Shinichi Nishigaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6099537
    Abstract: A medical treatment instrument is provided with a treatment section for treating issue, an insertion section which has at one end the treatment section, and an operating section which is provided at the other end of the insertion section, operates the treatment section, and has a fixed portion and a movable portion. The treatment section is actuated by pivoting the movable portion with respect to the fixed portion. The medical treatment instrument is further provided with an actuating main body and a cover. The cover is displaceable between a first position in which the medical treatment instrument is used and a second position in which the inside of the operating section is uncovered.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: August 8, 2000
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Toshiya Sugai, Hiroyuki Nagamizu, Minoru Tsuruta, Yoshihito Shimizu, Toshihiko Suzuta, Norikiyo Shibata, Shinichi Nishigaki, Naoki Uchiyama, Yoshinao Oaki
  • Patent number: 5423848
    Abstract: 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 the body cavity through the cannula. Therefore, the trocar of the invention allows insertion of a surgical tool curved in a circular arc into the body cavity without requiring no enlargement of the inside diameter of the cannula.
    Type: Grant
    Filed: June 6, 1994
    Date of Patent: June 13, 1995
    Assignee: Olympus Optical Co., Ltd.
    Inventors: 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
  • Patent number: 5259365
    Abstract: An endoscope examination apparatus includes a bed on which a subject lies, a device separately positioned from the bed and used for an endoscope examination, a control device provided in the bed for controlling the device and a connecting device extended from the bed and connected to the device for operatively connecting the device and the control device.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: November 9, 1993
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Toshiaki Nishikori, Yukio Nakajima, Masahiro Kawashima, Stuart M. Greengrass, Christopher Parker, Shuichi Takayama, Kenichiro Sanagai, Shinichi Nishigaki, Nobuaki Akui, Tatsuya Yamaguchi, Takeaki Nakamura, Masaaki Hayashi, Akira Takano
  • Patent number: 5112330
    Abstract: The resectoscope apparatus of this invention comprises an elongate hollow sheath to be inserted into a body cavity, an endoscope having an optical system inserted through said sheath and making the body cavity interior observable, an operating part connected to the sheath and a slider made integral with at least one of an electrode inserted through the sheath and making such treatment as resecting or coagulating tissues within a body cavity by using a high frequency current and a cord for feeding the high frequency current from a high frequency current source to the electrode and a slider which is provided in the operating part and can operate the electrode from outside the body.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: May 12, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinichi Nishigaki, Shiro Bito
  • Patent number: 5096292
    Abstract: A borescope apparatus comprising a flexible insertion section, a jet port formed at the insertion section, a moving device for supplying a compressed fluid to the jet port, whereby the insertion section is moved by an impellent force of the fluid ejected from the jet port, and a stabilizing device for steadily maintaining the position of the insertion section.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: March 17, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Nobuyuki Sakamoto, Ichiro Takahashi, Morihide Mizumoto, Saburo Hosono, Tutomu Yamamoto, Minoru Okada, Shinichi Nishigaki, Yoshio Shishido, Kazuhiro Misono, Atsushi Miyazaki, Yasuhiro Ueda, Toshiaki Nishikori, Takeaki Nakamura, Eiichi Fuse, Akibumi Ishikawa, Yoshisada Aoki
  • Patent number: 5088998
    Abstract: The resectoscope apparatus of this invention is provided with an electrode resecting or coagulating tissues within a body cavity by using a high frequency curent, a sheath in which at least a part of a hollow tube part inserting the electrode is formed of an electric insulating material, an operating part making the electrode operatable from outside the body, enclosing the electrode together with the sheath and formed of an electric insulating material and an endoscope inserted through the sheath to be able to observe the body cavity interior.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: February 18, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Kiyotoshi Sakashita, Shinichi Nishigaki, Shiro Bito
  • Patent number: 5051824
    Abstract: An electronic scope arranged in such a manner that an objective lens system is fastened to the tail end portion of an elongated inserting section and a solid state imaging device having a photoelectric transfer function is disposed at the focal point of the objective lens system. A frame to which the solid state imaging device is fastened to the tail end portion thereof is arranged to be detachably fastened to the inserting section. Therefore, the solid state imaging device can be easily repaired or interchanged by drawing out the frame body from the inserting section.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: September 24, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Shinichi Nishigaki
  • Patent number: 5048956
    Abstract: A borescope apparatus comprises an insertion section having a bending portion and a flexible portion, a bending mechanism for bending the bending portion under the pressure of supplied fluid, a pressurized fluid supplying unit for supplying the fluid to the jet port and the bending mechanism and a flow control unit for controlling the fluid supplied to jet ports which are provided in the distal end of either the bending portion or flexible portion and the bending mechanism.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: September 17, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Nobuyuki Sakamoto, Yasuhiro Ueda, Atsushi Miyazaki, Yoshio Shishido, Toshiaki Nishikori, Shinichi Nishigaki, Morihide Mizumoto, Takeaki Nakamura, Eiichi Fuse, Yoshisada Aoki
  • Patent number: 5007907
    Abstract: The resectoscope apparatus comprises an elongate hollow sheath to be inserted into a body cavity, an electrode inserted through the sheath to make such treatments as of resecting and coagulating tissues within the body cavity by using a high frequency current, an operating part which can operate the electrode from outside the body, a cord for feeding a high frequency current to the electrode from a high frequency current source and an optical sighting tube inserted through the sheath and having an optical system which can observe the body cavity interior and the electrode is made integral at least on the rear end side with the cord. For example, the electrode has a shaft part connected at the rear end to the above mentioned operating part and inserted through the sheath and a tip electrode part provided at the tip of the shaft part and projected and retracted from the sheath tip.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: April 16, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinichi Nishigaki, Shiro Bito
  • Patent number: 4994062
    Abstract: The resectoscope apparatus of this invention comprises an elongate hollow sheath to be inserted into a body cavity, an electrode inserted through the sheath and resecting or coagulating tissues within the body cavity by using a high frequency current, an endoscope insertable part inserted through the sheath and having an optical system making the body cavity interior observable and an operating part having a guide tube part through which the endoscope insertable part is inserted and a sheath connecting part connected to the base end part of the sheath and making the electrode operatable from outside the body. At least one of the guide tube part and sheath connecting part is formed of an electric insulating material for electric insulation.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: February 19, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinichi Nishigaki, Shiro Bito
  • Patent number: 4991957
    Abstract: A borescope apparatus having a borescope and a pressurized fluid supply device. The borescope has an operation unit and an insertion unit. The insertion unit comprises a bending tube portion, a jet port member coupled to a proximal end of the bending tube portion, and a flexible tube portion. The bending tube portion can be bent by operating the operation unit. The jet port member has a jet port. A pressuring fluid is supplied from the fluid supply unit to the jet port member, and is ejected through the jet port. The flexible tube portion can be bent by a jet of the fluid from through the jet port independently of the bending tube portion.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: February 12, 1991
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Nobuyuki Sakamoto, Yoshio Shishido, Masahiro Kumakura, Morihide Mizumoto, Morihide Tojo, Ryouji Masubuchi, Atsushi Miyazaki, Satoshi Tagami, Hiroshi Hasegawa, Shinichi Nishigaki, Yasuhiro Ueda, toshiaki Nishikiori, Kunio Kinoshita, Takeaki Nakamura, Eiichi Fuse, Yoshisada Aoki, Kazuhiro Misono
  • Patent number: 4905082
    Abstract: An electronic endoscope system has an elongated rigid inserting section and a relay optical system disposed therein. The relay optical system transfers an optical image. A imaging device is disposed at a focus position of the relay optical sysetm in a face-to-face relationship with the imaging surface thereof.
    Type: Grant
    Filed: May 5, 1988
    Date of Patent: February 27, 1990
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinichi Nishigaki, Takeaki Nakamura, Minoru Okabe, Hitoshi Karasawa, Hiroyuki Kusnoki, Tadao Hagino, Tetsumaru Kubota, Mototsugu Ogawa, Masato Toda, Teruaki Sugata
  • Patent number: 4901142
    Abstract: A video scope system including a video scope in which a solid state image sensor is disposed in a distal end of an insertion to be inserted into an object under inspection and picks up an image of the inside of the object under inspection illuminated by a light fed by a light guide extending in the insertion section, a light source unit having a light source feeding a light into the light guide, and a video processor unit processing a signal supplied from the solid state image sensor to output a picture signal to be displayed on a monitor. The light source unit and the video processor unit are disposed in separate housings, respectively, and these units are connected to each other by a cable to transmit a signal therebetween.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: February 13, 1990
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yuji Ikuno, Takeaki Nakamura, Yoshikazu Tojo, Shinichi Nishigaki, Hiromasa Suzuki, Hisao Yabe, Jun Yoshinaga, Takeshi Yokoi, Kazuhiko Ohzeki, Masahide Kanno
  • Patent number: 4879992
    Abstract: This rigid electronic endoscope has an endoscope having an elongate insertable part connected to the front part of an operating part which is also a holding part on the base side and formed of a solid state imaging device which can output an electric signal by electrically converting an object image in this insertable part and a conductive shielding member sheathing this insertable part. The electric signal obtained by this endoscope is input into a signal processing circuit. The ground terminal of this signal processing circuit is electrically connected to the above mentioned shielding member and is isolated from a ground terminal on the external current source side.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: November 14, 1989
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Shinichi Nishigaki, Takeaki Nakamura, Jun Yoshinaga, Masahide Kanno, Hisao Yabe, Takeshi Yokoi, Kazuhiko Oozeki, Yoshikazu Tojo, Hiromasa Suzuki
  • Patent number: 4867138
    Abstract: This rigid electronic endoscope is formed of an endoscope body and an elongate tubular guide tube. An insertable part to be inserted through the guide tube is provided in front of this endoscope body. A solid state imaging device as an imaging means is provided in the tip part of this insertable part and a supporting part of a cross-sectional area smaller than of this tip part is provided in the rear of this tip part. A space as a treating tool inserting path or as a liquid feeding and sucking tube path which can feed and drain an irrigating liquid is formed between this supporting part and the inner surface of the guide tube.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: September 19, 1989
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Tetsumaru Kubota, Takeaki Nakamura, Minoru Okabe, Hitoshi Karasawa, Hiroyuki Kusunoki, Tadao Hagino, Mototsugu Ogawa, Masato Toda, Teruaki Sugata, Shinichi Nishigaki
  • Patent number: 4862872
    Abstract: This endoscope system comprises an endoscope and a washing apparatus. The endoscope is provided with an elongate insertable part having an observing window and illuminating window in the tip part, an observing system receiving the returning light from an object entering through the observing window, an illuminating light output system emitting an illuminating light from the illuminating window and a memorizing device capable of memorizing information relating to washing. The washing apparatus is provided with a read-out device reading out information memorized in the memorizing device of the endoscope and a control device controlling the conditions of washing the endoscope by the information read out by the read-out device.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: September 5, 1989
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hisao Yabe, Masahide Kanno, Jun Yoshinaga, Takeshi Yokoi, Kazuhiko Ozeki, Takeaki Nakamura, Yoshikazu Tojo, Shinichi Nishigaki, Hiromasa Suzuki
  • Patent number: 4803550
    Abstract: An imaging apparatus for use in an electronic endoscope or the like is provided with a mechanically driven light-shielding plate, wherein imaging is effected by using a solid-state imaging device starting from a time when an amount of light shielded by this light-shielding plate becomes minimal, or imaging is effected repeatedly during a short exposure time within a transient period during which the amount of light shielded becomes minimal, and when an signal level of each image reaches a reference level, that signal is stored in a memory.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: February 7, 1989
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Hisao Yabe, Kenji Kimura, Masahide Kanno, Kiyoshi Tsuji, Jun Yoshinaga, Takeshi Yokoi, Kazuhiko Ozeki, Shinichi Nishigaki, Takeaki Nakamura, Yoshikazu Tojo, Hiromasa Suzuki
  • Patent number: 4737622
    Abstract: An apparatus for detecting a focused condition of an optical system, in which a light-receiving means arranged at a fixed position corresponding to a focus position photometrically detects a focused condition. A light beam having a definite shape is projected onto an object to be imaged by a light projection means. The reflected light beam is conducted along an optical axis of the optical system, deflected, and detected by the light receiving means for determining whether a focused condition exists. Several embodiments are disclosed for projecting a light spot of high contrast on the object and for detecting a focused condition on the basis of the intensity distribution of light received by the light-receiving means. The apparatus may be applied to an endoscope and other optical systems.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: April 12, 1988
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yoshio Shishido, Susumu Takahashi, Matsuo, Kazumasa, Miyazaki, Atsushi, Shinichi Nishigaki, Shinichi Kato, Takeaki Nakamura, Akibumi Ishikawa
  • Patent number: 4711999
    Abstract: An apparatus for detecting a focused condition of an optical system, in which a light-receiving means arranged at a fixed position corresponding to a focus position photometrically detects a focused condition. A light beam having a definite shape is projected onto an object to be imaged by a light projection means. The reflected light beam is conducted along an optical axis of the optical system, deflected, and detected by the light receiving means for determining whether a focused condition exists. Several embodiments are disclosed for projecting a light spot of high contrast of the object and for detecting a focused condition on the basis of the intensity distribution of light received by the light-receiving means. The apparatus may be applied to an endoscope and other optical systems.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: December 8, 1987
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yoshio Shishido, Susumu Takahashi, Kazumasa Matsuo, Atsushi Miyazaki, Shinichi Nishigaki, Shinichi Kato, Takeaki Nakamura, Akibumi Ishikawa
  • Patent number: 4556787
    Abstract: The photosensor is provided with a light-receiving surface for receiving a reflected image of an object and in which an aperture is provided. The aperture is positioned so as to receive a focused image and means are provided to prevent light from leaking directly to the light-receiving surface from the aperture. Prevention of light leakage permits focusing to be detected at high precision.
    Type: Grant
    Filed: March 14, 1983
    Date of Patent: December 3, 1985
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yoshio Shishido, Shinichi Nishigaki, Shinichi Kato, Kazumasa Matsuo, Atsushi Miyazaki, Susumu Takahashi, Takeaki Nakamura, Akibumi Ishikawa