Ultrasonic surgical device
US4587958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1984 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Jun 5, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.