Lipectomy cannula
US4775365A · kind A · utility
53Cited by
3References
15Claims
0Family size
Inventor
Key dates
| Filing date | Sep 23, 1987 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Sep 23, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86646
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved lipectomy device, or cannula, is disclosed having inner and outer tubes. The outer tube has an elongated aspiration aperture, and the inner tube has a spiral slot. A mechanism inside the handle of the device causes the inner tube to rotate, creating a traveling hole effect along the aspiration aperture. This obviates the necessity of the surgeon repeatedly pushing the cannula in and out. A valve system is also disclosed which allows the surgeon to maintain negative pressure in the vacuum line leading to the cannula while still allowing the cannula itself to be vented to ambient pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.