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:
Sep. 11, 1990
Filed:
Nov. 15, 1988
Naoki Uchiyama, Hachioji, JP;
Syuichi Takayama, Hachioji, JP;
Masakazu Gotanda, Sagamihara, JP;
Tetsumaru Kubota, Hachioji, JP;
Takashi Tsukaya, Hachioji, JP;
Kouichiro Ishihara, Hachioji, JP;
Kuniaki Kami, Hachioji, JP;
Naomi Sekino, Hachioji, JP;
Akira Murata, Hachioji, JP;
Masaki Hayashi, Hachioji, JP;
Olympus Optical Co., Ltd., , JP;
Abstract
A ultrasonic therapeutical apparatus comprises a plurality of ultrasonic vibrators which are disposed in a plurality of concentric circular rows and defining a ultrasonic shock wave generator. The apparatus also includes control means for independently controlling the frequency and the phase with which the ultrasonic vibrators in the respective raws are driven as well as the output levels thereof, thereby allowing only a positive pressure of the resultant ultrasonic wave to be increased while suppressing a negative pressure thereof to eliminate a cavitation effect.