Akihisa Ogawa, Takahiro Kogasaka, Akio Nakada, Ryoichi Konou: Surgical operation system and method of securing working space for surgical operation in body. Olympus Optical, Frishauf Holtz Goodman Langer & Chick P C, November 2, 1999: US05976146 (367 worldwide citation)

A surgical operation apparatus of this invention includes an operation sheath having a cavity securing portion that is inserted into vital tissue through the skin to secure a working cavity for a surgical operation in the body, and a sheet member that allows an operation tool to be inserted from out ...

Takahiro Kogasaka, Akihisa Ogawa, Akio Nakada, Shuichi Kimura, Norio Kobayashi, Makoto Kuramochi: Cavity retaining tool for bone surgery, a cavity retaining tool for general surgery, an endoscopic surgery system involving the use of a cavity retaining tool, and a procedure for surgery. Olympus Optical, Armstrong Westerman & Hattori, April 16, 2002: US06371968 (356 worldwide citation)

A cavity-retaining tool for bone surgery includes a cavity-retaining sheath which is inserted into the body and forms a cavity to act as a work space for bone surgery, a treatment channel which is placed in the cavity-retaining sheath and guides treatment tools necessary for the treatment of a bone ...

Shinji Hatta, Masakazu Gotanda, Tomohisa Sakurai, Yoshito Ichikawa, Kazuya Hijii, Masahide Oyama, Takashi Mihori, Hiroaki Matsumoto, Akihisa Ogawa, Kazue Tanaka: Electrosurgery apparatus and medical apparatus combined with the same. Olympus Optical, Frishauf Holtz Goodman Langer & Chick, August 3, 1999: US05931836 (169 worldwide citation)

In an electrosurgery apparatus for treating a living tissue, while the living tissue is being treated, a variation in state of energy supplied from a cautery power supply to a monopolar treatment device is detected on the basis of detection data obtained from a current sensor and a voltage sensor. B ...

Akihisa Ogawa: Endoscope dirt remover. Olympus Corporation, Ostrolenk Faber Gerb & Soffen, June 29, 2004: US06755782 (41 worldwide citation)

An endoscope dirt remover according to the present invention comprises a tube through which an insert section of an endoscope is inserted, an elastic member coupled with the tube, and a wiper blade coupled with the elastic member at wiping the dirt of the objective lens, at least part of the wiper b ...

Tomohisa Sakurai, Koji Iida, Hiroyuki Takahashi, Eiji Murakami, Akihisa Ogawa, Kenji Noda, Seiichi Hosoda, Takeaki Nakamura: Treating apparatus and treating device for treating living-body tissue. Olympus Corporation, Scully Scott Murphy & Presser P C, May 10, 2011: US07938779 (31 worldwide citation)

In a treating apparatus, a forceps body as a treating device is connected to a generator as a control device. The forceps body mainly includes a pair of handle portions, which are used for manipulation by being held by an operator, a pair of jaws provided between the handle portion and the pair of j ...

Yasunori Iwai, Akihisa Ogawa, Hiroaki Shinto, Masaru Masaki: Gas generator formed with electron beam welding. Daicel Chemical, April 29, 1997: US05624134 (24 worldwide citation)

The present invention is a small, light-weight gas generator for a passenger air bag. The gas generator includes a housing having a diffuser shell and a closure shell. The diffuser shell includes a round portion, a center cylindrical portion extending concentrically from inside a peripheral portion ...

Eiichi Ryobo, Akihisa Ogawa: Hybrid inflator. Daicel Chemical, Birch Stewart Kolasch & Birch, December 3, 2002: US06488310 (17 worldwide citation)

A hybrid inflator in which a weight thereof and the number of manufacturing steps can be reduced is provided. First and second communication holes

Akihisa Ogawa, Osamu Muramatsu: Gas generator having housing of double structure. Daicel Chemical, Weingram & Zall, April 26, 1994: US05306041 (15 worldwide citation)

The present invention relates to a gas generator for an air bag, particularly to the improvement of a housing for a gas generator.

Akihisa Ogawa, Masayuki Yamazaki, Yasunori Iwai, Eiichi Ryobo: Multistage inflating-type hybrid inflator. Daicel Chemical, Birch Stewart Kolasch & Birch, March 1, 2005: US06860510 (13 worldwide citation)

A multistage inflating-type hybrid inflator in which a malfunction does not occur is provided. When a first gas generating chamber 130 is first burnt, a combustion gas flowed out of first communication holes 136 advances in a direction towards an inner wall of an inflator housing 102 but it does not ...

Akihisa Ogawa, Osamu Muramatsu: Gas generator of thin-walled structure. Dalcel Chemical, Weingram & Zall, February 7, 1995: US05387007 (13 worldwide citation)

The gas generator according to the present invention is characterized by a combustion chamber formed with a combustor cup (14) having an annular top wall fixed at an inner edge portion thereof to a circumferential edge of a top wall of a central cylindrical holder (4) by riveting (28). A combustor p ...