Ultrasonic treatment device

• US 4,961,424 A
• Filed: 07/27/1988
• Issued: 10/09/1990
• Est. Priority Date: 08/05/1987
• Status: Expired due to Term

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Sasaki, Hiroshi, Nakamura, Takeaki, Gotanda, Masakazu, Karasawa, Hitoshi, Kubota, Tatsuya, Hatta, Shinji, Takayama, Syuichi, Kubota, Tetsumaru
• Primary Examiner(s): JAWORSKI, FRANCIS J
• Application Number:
  US07/225,030
• Time in Patent Office: 804 Days
• Field of Search: 128/24 A, 128/305, 604/22
• US Class Current: 601/2
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 2017/320098 with transverse or torsional motion
• CPC Class Codes: B06B 1/0611 in a pile
• CPC Class Codes: B06B 3/02 involving a change of amplitude

Abstract

A therapeutical device using ultrasonic vibration includes an ultrasonic vibration generator for generating ultrasonic vibration in the axial direction of the device and in a direction different from the axial direction of the device, an amplifier connected to the ultrasonic vibration generator for amplifying the ultrasonic vibration generated, and a vibration transmitting connected to the amplifier member for transmitting the ultrasonic vibration.

Claims

1. An ultrasonic treatment device, comprising:

an ultrasonic vibration generator;

amplifier means, connected to said ultrasonic vibration generator, for amplifying ultrasonic vibrations generated by said ultrasonic vibration generator; and

vibration transmitting means, having an elongated portion and connected to said amplifier means, for transmitting the ultrasonic vibrations;

said ultrasonic vibration generator including means for generating ultrasonic vibrations in the longitudinal axial direction and in a substantially lateral direction of the elongated portion of said transmitting means comprised of (a) a piezoelectric element, (b) both end faces of said piezoelectric element having an electrode attached thereto, said electrode comprising a plurality of electrode pieces, and (c) voltage supply means for applying voltages of different levels, respectively, to the electrode pieces.

2. The ultrasonic treatment device according to claim 1, wherein said voltage supply means has phase converter means for applying high frequency voltages having phases of different angles to the electrode pieces of each of said electrodes.