Lipectomy device having round cutting edges
First Claim
Patent Images
1. An assisted lipectomy device, comprising:
- handle means;
an outer tube having distal end proximate ends, and having a first longitudinal slot, said outer tube being open at said proximate end, and said proximate end of said outer tube attached to said handle means;
an inner tube having distal and proximate ends, and having a second spiral slot, said inner tube located within said outer tube, said inner tube being open at said proximate end, and said proximate end of said inner tube attached to said handle means;
vacuum means in fluid communication with said inner tube for creating suction within said inner tube;
said spiral and longitudinal slots each having rounded cutting edges;
motor means coupled to said inner tube for rotating said inner tube along their length to remove fat lobules by tearing in conjunction with said vacuum means.
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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.
94 Citations
24 Claims
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1. An assisted lipectomy device, comprising:
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handle means; an outer tube having distal end proximate ends, and having a first longitudinal slot, said outer tube being open at said proximate end, and said proximate end of said outer tube attached to said handle means; an inner tube having distal and proximate ends, and having a second spiral slot, said inner tube located within said outer tube, said inner tube being open at said proximate end, and said proximate end of said inner tube attached to said handle means; vacuum means in fluid communication with said inner tube for creating suction within said inner tube; said spiral and longitudinal slots each having rounded cutting edges; motor means coupled to said inner tube for rotating said inner tube along their length to remove fat lobules by tearing in conjunction with said vacuum means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An assisted lipectomy device comprising:
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a handle having first and second ends, and having a cavity extending from said first end to said second end; a tube gear located inside said cavity, said tube gear having an aperture therein, forming an inner surface, said inner surface being threaded; bearing means for containing said tube gear within said cavity; motor means coupled to said tube gear; switch means for activating said motor means; an inner tube having distal and proximate ends, said proximate end of said inner tube passing through said first end of said handle, being open and threaded for mating with said threaded inner surface of said tube gear, and said inner tube having a spiral slot located near said distal end; an outer tube having distal and proximate ends and surrounding said inner tube, said proximate end of said outer tube being attached to said first end of said handle by a twist and lock arrangement, said outer tube having a longitudinal slot located near said distal end; a vacuum means in fluid communication with said inner tube for creating suction within said inner tube; said spiral and longitudinal slots each having rounded cutting edges along their length to remove fat lobules by tearing in conjunction with said vacuum means; a port attached to an integral with said second end of said handle; a hose attached to said port connecting said handle to said vacuum means. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification