Surgery – Means for introducing or removing material from body for... – With means for cutting – scarifying – or vibrating tissue
Patent
1995-10-20
1996-10-29
Mendez, Manuel
Surgery
Means for introducing or removing material from body for...
With means for cutting, scarifying, or vibrating tissue
A61B 1720
Patent
active
055691781
ABSTRACT:
A power assisted liposuction handpiece including a handle portion and a cannula portion. The cannula portion includes an apertured outer tube having a rotary auger disposed within the outer tube. In a preferred embodiment, a portion of the rotary auger beneath the aperture has an elastically deformable outer tissue-contacting edge. The elastically deformable outer tissue-contacting edge avulses or tears apart fatty tissue protruding through the aperture into the cannula when the auger rotates. The rotating auger also facilitates the mechanical transport of the avulsed cells to a vacuum aspirator port within the handpiece for removal. The relatively soft, elastically deformable tissue-contacting edge of the auger reduces trauma to more cohesive non-fatty neural and vascular tissue providing greater tissue selectivity than present invasive liposuction equipment. In addition, the handpiece is relatively easy to use, rendering the procedure less tiring for the surgeon. In an alterative embodiment, the avulsing peripheral edge of the cannula aperture is elastically deformable, permitting avulsion of fatty tissue having a relatively low tensile strength but capable of deforming under pressure thereby preventing avulsion of more tenacious tissue. In still another embodiment, the shaft of the rotating member is elastically deformable to permit high tensile strength tissue to deflect the rotating tissue-contacting edge of the auger or similar avulsing rotary member when such tenacious tissue is pinched between the edge of the cannula aperture and the tissue-contacting edge of the rotating member.
REFERENCES:
patent: 4167944 (1979-09-01), Banko
patent: 4662869 (1987-05-01), Wright
patent: 4819635 (1989-04-01), Shapiro
patent: 4867157 (1989-09-01), McGurk-Burleson et al.
patent: 4932935 (1990-06-01), Schwartz
patent: 5084052 (1992-01-01), Jacobs
patent: 5242460 (1993-09-01), Klein et al.
patent: 5383884 (1995-01-01), Summers
patent: 5403334 (1995-04-01), Evans et al.
Mendez Manuel
Petit Michael G.
LandOfFree
Power assisted suction lipectomy device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power assisted suction lipectomy device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power assisted suction lipectomy device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1782189