Ultrasonic wound treatment method and apparatus
US8025672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2006 |
| Grant date | Sep 27, 2011 |
| Priority date | — |
| Expiry date | Dec 10, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/320073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical device includes a probe, a transducer assembly operatively coupled to the probe for generating an ultrasonic resonant vibration therein, and a frequency generator operatively coupled to the transducer assembly for energizing the transducer component. A control component is operatively connected to the frequency generator for inducing the frequency generator to produce an alternating signal sequence including a first electrical excitation signal and a second electrical excitation signal, wherein the first electrical excitation signal has at least one first ultrasonic frequency and at least one first amplitude collectively selected to generate cavitation bubbles at a wound site to fragment damaged tissue and debride the wound site. The second electrical excitation signal has at least one second ultrasonic frequency and at least one second amplitude collectively selected to generate cavitation bubbles in a substantially reduced amount, thereby allowing for increased transmission of vibratory energy into the debrided tissues for enhancing healing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.