The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 1991
Filed:
Feb. 27, 1987
Tetsumaru Kubota, Tokyo, JP;
Akira Shiga, Tokyo, JP;
Akio Nakada, Tokyo, JP;
Syuichi Takayama, Tokyo, JP;
Ryouichi Konou, Tokyo, JP;
Yasuhiro Ueda, Tokyo, JP;
Hitoshi Karasawa, Tokyo, JP;
Tatsuo Nagasaki, Tokyo, JP;
Koji Taguchi, Tokyo, JP;
Hiroyoshi Fujimori, Tokyo, JP;
Shinichi Imade, Tokyo, JP;
Shinji Hatta, Tokyo, JP;
Yutaka Ohshima, Tokyo, JP;
Hiroyuki Kusunoki, Tokyo, JP;
Toshiki Terayama, Tokyo, JP;
Masaaki Hayashi, Tokyo, JP;
Tadao Hagino, Tokyo, JP;
Akihiro Taguchi, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A medical treatment device for resecting, e.g., a prostate or breaking a bladder stone, which includes a vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a casing for accommodating the vibrator and the horn, a probe connected to the front portion of the horn to transmit ultrasonic vibrations generated by the vibrator, and a power source unit for supplying a drive voltage to the vibrator, the power source unit having an oscillator for producing a wave having a frequency for vibrating the probe and a frequency switching circuit for selecting an oscillating frequency at which the distal end of the probe serves as a loop of vibration or a frequency at which the distal end of the probe serves as a node of vibration.