Medical treatment device utilizing ultrasonic wave
US4989588A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1987 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Feb 27, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.