Ultrasonic surgical device

Patent 4587958 Issued on May 13, 1986. Estimated Expiration Date:

June 5, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3727112

Ultrasonic probe
Patent #: 4169984
Issued on: 10/02/1979
Inventor: Parisi

Ultrasonic aspirator
Patent #: 4223676
Issued on: 09/23/1980
Inventor: Wuchinich , et al.

Ultrasonic tooth cleaning apparatus
Patent #: 4236510
Issued on: 12/02/1980
Inventor: Hatter , et al.

Endodontic flow-through ultrasonic instrument holder device Patent #: 4330278
Issued on: 05/18/1982
Inventor: Martin

Inventors

Assignee

Sumitomo Bakelite Company Limited

Application

No. 06/618398 filed on 06/05/1984

US Classes:

601/2, Ultrasonic310/316.01, Input circuit for simultaneous electrical and mechanical output from piezoelectric element310/325Sandwich or Langevin type

Examiners

Primary: Howell, Kyle L.
Assistant: Jaworski, Francis J.

Attorney, Agent or Firm

International Classes

A61B 17/32 (20060101)
A61B 17/22 (20060101)
A61M 1/00 (20060101)

Abstract

An ultrasonic oscillation device adapted for use in surgical operations includes, for the purpose of producing ultrasonic vibrations of an amplitude and power capable of exhibiting a satisfactory tissue shattering capacity in a wide field of living tissues, an ultrasonic oscillation section having a power amplifier circuit for adjusting the amplitude of its output without any difference in phase between the output and a feedback signal, and a starting impulse reducing circuit for reducing the impulse due to a transient current upon the starting of oscillation. Also, an ultrasonic transducer includes an electrostriction type transducer and a horn, and the horn forming a scalpel portion is provided with a suction opening adapted for irrigating an affected part operated on and its surrounding, floating shattered cellular pieces and sucking and removing the floating cellular pieces.