Patents by Inventor Yasuhiko Kikuchi
Yasuhiko Kikuchi 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: 10973501Abstract: An endoscopic treatment tool includes a sheath; a treatment portion capable of protruding and retracting from a distal end of the sheath; a manipulation main body; a slider which advances and retracts in a longitudinal axis direction to cause the treatment portion to protrude and retract from the sheath; a first locking mechanism which locks the slider at a position at which the distal end of the treatment portion is accommodated in the sheath in accordance with a retracting manipulation of the slider; a second locking mechanism provided at further distal side than the first locking mechanism and restricts advance of the slider by being locked to the manipulation main body; a fixing mechanism provided in the second locking mechanism and fixed to the manipulation main body by sliding; and a restricting portion which restricts fixing of the fixing mechanism to the manipulation main body.Type: GrantFiled: September 27, 2018Date of Patent: April 13, 2021Assignee: OLYMPUS CORPORATIONInventors: Hirofumi Eto, Yasuhiko Kikuchi, Katsuji Uemichi, Masatoshi Tonomura, Jin Hiraoka
-
Publication number: 20190021708Abstract: An endoscopic treatment tool includes a sheath; a treatment portion capable of protruding and retracting from a distal end of the sheath; a manipulation main body; a slider which advances and retracts in a longitudinal axis direction to cause the treatment portion to protrude and retract from the sheath; a first locking mechanism which locks the slider at a position at which the distal end of the treatment portion is accommodated in the sheath in accordance with a retracting manipulation of the slider; a second locking mechanism provided at further distal side than the first locking mechanism and restricts advance of the slider by being locked to the manipulation main body; a fixing mechanism provided in the second locking mechanism and fixed to the manipulation main body by sliding; and a restricting portion which restricts fixing of the fixing mechanism to the manipulation main body.Type: ApplicationFiled: September 27, 2018Publication date: January 24, 2019Applicant: OLYMPUS CORPORATIONInventors: Hirofumi ETO, Yasuhiko KIKUCHI, Katsuji UEMICHI, Masatoshi TONOMURA, Jin HIRAOKA
-
Publication number: 20160206278Abstract: An ultrasonic biopsy needle includes a sheath inserted through a channel of an ultrasonic endoscope; a needle tube which is inserted through the sheath and capable of advancing and retracting inside the sheath; and an operation portion which is connected to a proximal end of the sheath and is provided to advance and retract. The sheath includes an extension limiting portion that is positioned more distal than a proximal end of a bending portion of the ultrasonic endoscope. The extension limiting portion is formed of a metal coil, the ratio of the inner diameter of the channel to the outer diameter of the coil is in a range from 1.0:0.84 to 1.0:0.96, the initial tension of the coil is equal to or greater than 2.0 [N] or greater, and extension of the sheath caused by the forward and backward movement of the needle tube is limited.Type: ApplicationFiled: March 29, 2016Publication date: July 21, 2016Applicant: OLYMPUS CORPORATIONInventors: Katsuji UEMICHI, Yasuhiko KIKUCHI, Yukio SATO, Ryuji NAGAMATSU, Koji ONISHI, Yuji SAKAMOTO
-
Publication number: 20160206297Abstract: An ultrasonic biopsy needle includes a sheath inserted through a channel of an ultrasonic endoscope; a needle tube which is inserted through the sheath and capable of advancing and retracting in the sheath; and an operation portion which is connected to a proximal end of the sheath and is provided to advance and retract the needle tube. The sheath includes a meandering suppressing portion positioned more proximal than a proximal end of a bending portion of the ultrasonic endoscope when a distal end of the sheath is positioned in a visual field of an optical image-capturing mechanism of the ultrasonic endoscope. The meandering suppressing portion is formed of a metal coil, the ratio of the inner diameter of the channel to the outer diameter of the coil is in a range from 1.0:0.66 to 1.0:0.84, and the initial tension of the coil is equal to or greater than 5.0 [N].Type: ApplicationFiled: March 29, 2016Publication date: July 21, 2016Applicant: OLYMPUS CORPORATIONInventors: Katsuji UEMICHI, Yasuhiko KIKUCHI, Yukio SATO, Ryuji NAGAMATSU, Koji ONISHI, Yuji SAKAMOTO
-
Patent number: 6471701Abstract: An hf resectoscope implement for cutting body tissue in a body cavity filled with an electrically conducting fluid and comprising a loop support and a loop-shaped cutting electrode mounted distally on the support. A plane of the cutting electrode slants relative to a longitudinal axis of the loop support. The implement also includes a neutral electrode mounted on the support. An insulator is mounted at the loop support between the electrodes such that any straight geometric line between the electrodes passes through the insulator. The neutral electrode and the insulator are configured to not significantly hamper the view available via optics fitted in the resectoscope stem tube.Type: GrantFiled: June 14, 2001Date of Patent: October 29, 2002Assignee: Olympus Winter & Ibe GmbHInventors: Pieter Brommersma, Yasuhiko Kikuchi
-
Patent number: 6383183Abstract: A high frequency treatment apparatus of the present invention comprises a high frequency generation section for supplying high frequency power, a control section, which is connected to the high frequency generation section, and which controls output of the high frequency generation section, having a first control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a first predetermined value and a second control mode in which the maximal output value of high frequency power supplied from the high frequency generation section is confined to be equal to or less than a second predetermined value which is less than the first predetermined value, a treatment tool, which is connected to the high frequency generation section, and which performs a treatment of a diseased part by supplying high frequency power from the high frequency generation section controlled by the control section to the diseased part, and a conType: GrantFiled: April 7, 1999Date of Patent: May 7, 2002Assignee: Olympus Optical Co., Ltd.Inventors: Naomi Sekino, Yasuhiko Kikuchi, Kazuya Hijii, Masahide Ohyama, Kouji Yamauchi, Hiroyuki Takahashi, Takahiro Kogasaka, Akio Nakada, Takeaki Nakamura, Masatoshi Tonomura, Hideto Yoshimine, Hiroaki Matsumoto
-
Publication number: 20010053908Abstract: An hf resectoscope implement for cutting body tissue in a body cavity filled with an electrically conducting fluid and comprising a loop support and a loop-shaped cutting electrode mounted distally on the support. A plane of the cutting electrode slants relative to a longitudinal axis of the loop support. The implement also includes a neutral electrode mounted on the support. An insulator is mounted at the loop support between the electrodes such that any straight geometric line between the electrodes passes through the insulator. The neutral electrode and the insulator are configured to not significantly hamper the view available via optics fitted in the resectoscope stem tube.Type: ApplicationFiled: June 14, 2001Publication date: December 20, 2001Inventors: Pieter Brommersma, Yasuhiko Kikuchi
-
Patent number: 5849022Abstract: A medical instrument for use in combination with an endoscope having an operating shaft and a pair of tongs. The instrument has a drive mechanism provided between the operating shaft and the tongs, for opening and closing the tongs. The drive mechanism can apply an additional force to the tongs even after the tongs have closed completely.Type: GrantFiled: August 6, 1997Date of Patent: December 15, 1998Assignee: Olympus Optical Co., Ltd.Inventors: Kiyotoshi Sakashita, Toshihiko Hashiguchi, Toru Shimizu, Katsumi Sasaki, Kenichi Kimura, Eiji Murakami, Koji Iida, Yasuhiko Kikuchi, Toshiya Sugai