Ultrasonic aspirator
US4223676A · kind A · utility
278Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2217/007
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for the surgical removal of tissue is disclosed comprising a handpiece having a resonant vibrator with a magnetostrictive stack and connecting body encompassing a hollow elongated tool which is ultrasonically vibrated at its tip longitudinally to a peak to peak stroke of at least 0.005 inches at about 25,000 cps (25 KHz). A generator powers the vibrator and is automatically controlled at the frequency to maintain the resonant vibration. Aspiration is provided by suction through the hollow tool at its tip, and a manifold enclosing the tool end of the handpiece provides irrigation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.