Highly flexible, reinforced swan neck liposuction cannulas

Details Highly flexible, reinforced swan neck liposuction cannulas Highly flexible, reinforced swan neck liposuction cannulas

1999-12-29

2000-07-18

Buiz, Michael

Surgery

Instruments

Cutting, puncturing or piercing

606167, A61B 1732

Patent

active

060901217

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 varying thicknesses along the length thereof which allow controlled rigidity of the long plastic shafts, and enable the cannulas to be bent into a semi-circle without breaking and yet return to their original shape.

REFERENCES:
patent: 5514091 (1996-05-01), Yoon
patent: 5665101 (1997-09-01), Becker et al.
patent: 5865810 (1999-02-01), Perry et al.

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