Microwave-assisted liposuction apparatus
US5931807A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for heating fatty tissue to facilitate liposuction removal of fat and, by additional heating, to enable denaturing of the tissue structure. The apparatus uses microwave energy, applied by a cannula to the fatty tissue, as a means to facilitate fat removal. The microwave energy is delivered at a frequency range chosen to optimize energy coupling directly to the fatty tissue, while insuring the attenuation of the radiation level to a safe level in a relatively short distance. The cannula is provided with internal channels to simultaneously provide fluid and remove the mixture of fluid and fatty tissue. Since the microwave frequency is selected to insure direct coupling with the fat tissue, it is not necessary to introduce water to promote coupling, and if water is introduced for cooling or irrigation purposes, no salts need to be added to the water for purposes of microwave energy coupling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.