Patents by Inventor Isamu Karasawa

Isamu Karasawa 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).

  • MEDICAL APPARATUS
    Publication number: 20080200759
    Abstract: In a case where a balloon is broken and a body fluid reversely flows into a feed/discharge tube during a suction operation of a balloon control apparatus, a pump is stopped by operation-canceling section after passing of a preset predetermined time, and the suction operation of sucking the fluid into a bottle is canceled. Thereby, the amount of recovered liquid in the bottle is limited within a predetermined capacity. Thus, even in the case where the body fluid reversely flows into the feed/discharge tube, the body fluid does not overflow from the bottle, and the body liquid can properly recovered in the bottle.
    Type: Application
    Filed: February 13, 2008
    Publication date: August 21, 2008
    Inventors: Hiroshi NIWA, Masami Fukuchi, Isamu Karasawa, Kuniaki Kami, Kenji Kishi, Akihiro Miyashita
  • Lamp life meter and endoscope light source unit
    Patent number: 6307332
    Abstract: A light source having a lamp for generating light generates a lamp on signal at an output terminal thereof when the lamp is lit. A lamp life meter is connected to the light source for detecting the time that the lamp has been lit. The lamp life meter includes a housing having at least one contact terminal adapted to be coupled to the output terminal of the light source, a clock generator located in the housing and generating clock signals, a counter located in the housing and counting the clock signals whenever the clock on signal indicates that the lamp is on and a display mounted in the housing for displaying an indication of the time the lamp has been turned on.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: October 23, 2001
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Toshiaki Noguchi, Isamu Karasawa, Nobuo Moriya, Terutoshi Shigemoto, Koji Saito
  • Light source device
    Patent number: 5526249
    Abstract: A light source device including a lamp-exchanging door which is attached/removed when a lamp is replaced and an electrode-connection/separation arrangement for making connection/separation between an electrode of a lamp driving circuit and an electrode of a lamp when the lamp-exchanging door is attached/removed.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: June 11, 1996
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Isamu Karasawa, Toshiaki Noguchi, Masato Toda, Masanobu Koitabashi, Keiji Handa, Akihiro Amemiya, Yoshihiro Okada, Toshiaki Nishikori, Tsuguhisa Sasai, Kazufumi Takamizawa
  • Endoscope system for simultaneously displaying two endoscopic images on a shared monitor
    Patent number: 5196928
    Abstract: An endoscope system comprises first and second endoscopes each of which includes an elongated insertion tube and an imaging device, a light source for supplying illumination light to the endoscopes, a function for processing a signal originating from one of the imaging devices, and a video processor which mixes the signal with at least a signal sent from an external input terminal and outputs a given video signal corresponding to the first and second endoscopic images. The video signal provided by the video processor is output to a shared monitor, thus displaying two endoscopic images simultaneously.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: March 23, 1993
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Isamu Karasawa, Yasuyuki Kaneko, Masahiko Hamano, Kazufumi Takamizawa, Matsumi Oshima, Hideyuki Shoji, Ken-ya Inomata, Atsushi Amano, Toshiaki Nishikori, Akira Osawa