Highly flexible, reinforced swan neck liposuction cannulas
US6090121A · kind A · utility
Inventors
Key dates
| Filing date | Dec 29, 1999 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Dec 29, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/0266
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The flexible cannulas are constructed of metal and plastic, with the metal cannulas having diameters of between 2.0 and 3.5 mm, and with the plastic cannulas having diameters greater than 3.5 mm (i.e., 3.5 to 6.0 mm). These long shaft flexible cannulas, when utilized in combination with a reinforced neck, allow the cannula point of entry to act as a fulcrum (with an optional interposed insert) in concert with the surgeon's guiding hand to deflect the cannulas. The cannula tip is preferably highly beveled with an adjacent set of three openings, and the cannula easily penetrates fibrous fat and may reach fat deposits relatively distant from the entrance wounds. The long shaft, highly flexible, reinforced swan neck cannulas move in an easily controllable manner within the subcutaneous tissue below the dermal envelope in an arciform fashion. Benefits include a reduced need to move a patient's body position intraoperatively. The swan neck has been reinforced to provide the needed additional stability at handle/shaft junction to help the surgeon increase leverage on the cannula shaft. The long, flexible plastic cannula shafts are provided central metal "memory" reinforcing wires of varyi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.