Power-assisted liposuction instrument and cannula assembly therefor
First Claim
1. A powered liposuction device comprising:
- (A) a hand-holdable housing having a longitudinal extent, a cylindrically-shaped cannula cavity extending along a substantial portion of said longitudinal extent, and a reciprocation means reciprocatable within said hand-holdable housing and being operated associated within an actuation means; and
(B) a cannula assembly operably connectable to said hand-holdable housing, and including;
(1) a hollow inner cannula having a distal end, and proximal end, and at least one inner suction aperture about said inner cannula distal end, said inner cannula proximal end further including an outlet port and a continuous passageway communicating said inner suction aperture with said outlet port, said inner cannula having an inner cannula base portion extending from said inner cannula proximal end and being releasably connectable to said hand-holding housing;
(2) a hollow outer cannula having a distal end, a proximal end, and at least one outer elongated suction aperture disposed about said outer cannula distal end, said outer cannula having an outer cannula base extending from said outer cannula proximal end and having a cylindrically shaped portion being releasibly received within said cylindrically-shaped cannula cavity, and said cylindrically-shaped portion having a notch means for releasibly engaging said actuation means, and said hollow inner cannula being disposed within at least a portion of said hollow outer cannula so as to enable sliding movement between said hollow outer and inner cannulas while permitting aspiration through said outer and inner suction apertures, along said continuous passageway and out of said outlet port,(3) alignment means, operably associated with said hollow inner cannula, for aligning said hollow inner and outer cannulas so that said inner suction aperture is in registration with at least a portion of said outer elongated suction aperture as said hollow inner and outer cannulas are caused to undergo said sliding movement, and(4) said hollow inner cannula being operably associated with said actuation means, and said hollow outer cannula being supportable in an essentially stationary position with respect to said hand-holdable housing so that said actuation means can effectuate relative sliding movement between said hollow inner and outer cannulas when said reciprocation means reciprocates, and that the location of said aspiration is periodically displaceable a distance equal to a substantial portion of the longitudinal extent of said hand-holding housing.
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Accused Products
Abstract
A method and apparatus is disclosed for mechanically-assisted liposuction treatment. The apparatus includes a hand-holdable housing, a cannula assembly, and a reciprocation mechanism. The hand-holdable housing has a cavity adaptable for receipt of a portion of the cannula assembly. The cannula assembly includes an inner cannula and an outer cannula, each having a distal end and a proximal end and at least one aspiration aperture about the distal end. The inner cannula is disposed within the outer cannula and the inner and outer aspiration apertures are in at least partial registration to form an effective aspiration aperture. The reciprocation mechanism is disposed within the housing and is operably associated with either the inner or outer cannula so that one of the cannulas can be selectively caused to reciprocate relative to the housing while the other is stationarily disposed relative to the housing. As one of the cannulas is caused to reciprocate relative to the other the effective aspiration aperture formed through the distal end of the cannula assembly, is caused to undergo periodic displacement. In the preferred embodiments, the amount and rate of such aspiration aperture displacement is controllably adjustable. The cannula assembly is releasably detachable from the hand-holdable housing to facilitate cleaning and sterilization of the cannula assembly and the housing.
93 Citations
4 Claims
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1. A powered liposuction device comprising:
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(A) a hand-holdable housing having a longitudinal extent, a cylindrically-shaped cannula cavity extending along a substantial portion of said longitudinal extent, and a reciprocation means reciprocatable within said hand-holdable housing and being operated associated within an actuation means; and (B) a cannula assembly operably connectable to said hand-holdable housing, and including; (1) a hollow inner cannula having a distal end, and proximal end, and at least one inner suction aperture about said inner cannula distal end, said inner cannula proximal end further including an outlet port and a continuous passageway communicating said inner suction aperture with said outlet port, said inner cannula having an inner cannula base portion extending from said inner cannula proximal end and being releasably connectable to said hand-holding housing; (2) a hollow outer cannula having a distal end, a proximal end, and at least one outer elongated suction aperture disposed about said outer cannula distal end, said outer cannula having an outer cannula base extending from said outer cannula proximal end and having a cylindrically shaped portion being releasibly received within said cylindrically-shaped cannula cavity, and said cylindrically-shaped portion having a notch means for releasibly engaging said actuation means, and said hollow inner cannula being disposed within at least a portion of said hollow outer cannula so as to enable sliding movement between said hollow outer and inner cannulas while permitting aspiration through said outer and inner suction apertures, along said continuous passageway and out of said outlet port, (3) alignment means, operably associated with said hollow inner cannula, for aligning said hollow inner and outer cannulas so that said inner suction aperture is in registration with at least a portion of said outer elongated suction aperture as said hollow inner and outer cannulas are caused to undergo said sliding movement, and (4) said hollow inner cannula being operably associated with said actuation means, and said hollow outer cannula being supportable in an essentially stationary position with respect to said hand-holdable housing so that said actuation means can effectuate relative sliding movement between said hollow inner and outer cannulas when said reciprocation means reciprocates, and that the location of said aspiration is periodically displaceable a distance equal to a substantial portion of the longitudinal extent of said hand-holding housing.
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2. A powered liposuction device comprising:
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(A) a hand-holdable housing having a longitudinal extent, a cylindrically-shaped cannula cavity extending along a substantial portion of said longitudinal extent, and a reciprocation means reciprocatable within said hand-holdable housing and being provided with an actuation means, and (B) a cannula assembly operably connectable to said hand-holdable housing, and including; (1) a hollow inner cannula having a distal end, a proximal end, and at least one inner suction aperture about said inner cannula distal end, said inner cannula proximal end further including an outlet port and a continuous passageway communicating said inner suction aperture with said outlet port, said inner cannula having an inner cannula base portion extending from said inner cannula proximal end and having a snap-fit connection means for releasably snap-fitting said inner cannula base portion with said actuation means when said inner cannula base portion is slidably disposed within said cylindrically-shaped cannula cavity, (2) a hollow outer cannula having a distal end, a proximal end, and at least one elongated outer suction aperture about said outer cannula distal end, said outer cannula having an outer cannula base extending from said outer cannula proximal end and having a cylindrically shaped portion being releasably received within said cylindrically-shaped cannula cavity, said hollow inner cannula being disposed within at least a portion of said hollow outer cannula so as to enable sliding movement between said hollow outer and inner cannulas while permitting aspiration through said outer and inner suction apertures, along said continuous passageway and out of said outlet port, and said inner suction aperture being elongated in the longitudinal direction of said hollow inner cannula and said inner suction aperture being substantially shorter than said outer suction aperture along said longitudinal direction, (3) alignment means operatively associated with said hollow inner cannula for aligning said hollow inner and outer cannulas so that said inner suction aperture is in registration with at least a portion of said outer elongated suction aperture as said hollow inner and outer cannulas are caused to undergo said sliding movement, and (4) said hollow inner cannula being operably associated with said actuation means, and said hollow outer cannula being supportable in an essentially stationary position with respect to said hand-holdable housing so that said actuation means can effectuate relative sliding movement between said hollow inner and outer cannula when said reciprocation means reciprocates, and that the location of said aspiration is periodically displaceable a distance equal to a substantial portion of the longitudinal extent of said hand-holdable housing.
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3. Apparatus for use in suction assisted tissue curettage, comprising:
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a hand-holdable housing having a longitudinal extent, first and second openings disposed along said longitudinal extent, a first cavity including an interiorly disposed sidewall surface and extending along a substantial portion of said longitudinal extent and between said first and second openings, and a second cavity disposed alongside at least a portion of said first cavity; a cannula assembly including a hollow inner cannula having at least one inner suction aperture, and a hollow outer cannula having at least one outer suction aperture, said hollow outer cannula being stationarily mounted with respect to said first opening, and said hollow inner cannula being positionable within at least a portion of said hollow outer cannula so as to enable sliding movement between said hollow outer and inner cannulas while permitting aspiration through said outer and inner suction apertures, and said hollow inner cannula having an outlet port for connecting a section of tubing which extends along said first cavity and out said second opening; alignment means operatively associated with said hollow inner cannula for aligning said hollow inner and outer cannulas so that said inner suction aperture is in registration with at least a portion of said outer suction aperture as said hollow inner and outer cannulas are caused to undergo said sliding movement; reciprocation means disposed within said second cavity; and an actuation means operably associated with said reciprocation means and extending through said interiorly disposed sidewall surface and into a portion of said first cavity and being adapted to engage with a portion of said hollow inner cannula so as to operably associate said reciprocation means with said hollow inner cannula and effectuate relative sliding movement between said hollow inner and outer cannulas when said reciprocation means causes said actuation means to reciprocate and cause the location of said aspiration through said outer and inner suction apertures to be periodically displaced a distance equal to a substantial portion of the longitudinal extent of said hand-holdable housing.
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4. Apparatus for use in suction assisted tissue curettage, comprising:
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a hand-holdable housing having a longitudinal extent, first and second openings disposed along said longitudinal extent, a first cavity including a interiorly disposed sidewall surface and extending along a substantial portion of said longitudinal extent and between said first and second openings, and a second cavity disposed alongside at least a portion of said first cavity; a cannula assembly including a hollow inner cannula having at least one inner suction aperture, end a hollow outer cannula having at least one outer suction aperture, said hollow outer cannula being stationarily mounted with respect to said hand-holdable housing, and said hollow inner cannula being positionable within at least a portion of said hollow outer cannula so as to enable sliding movement between said hollow outer and inner cannulas while permitting aspiration through said outer and inner suction apertures; means operably associated with said hollow inner and outer cannulas for aligning said hollow inner and outer cannulas so that said inner suction aperture is in registration with at least a portion of said outer suction aperture as said hollow inner and outer cannulas are caused to undergo said sliding movement; reciprocation means disposed within said second cavity; and actuation means operably associated with said reciprocation means and extending between said interiorly disposed sidewall surface and a portion of said first cavity and being adapted to engage with a portion of said hollow inner cannula so as to operably associate said reciprocation means with said hollow inner cannula and effectuate relative sliding movement between said hollow inner and outer cannulas when said reciprocation means causes said actuation means to reciprocate and cause the location of said aspiration through said outer and inner suction apertures to be periodically displaced a distance equal to a substantial portion of the longitudinal extent of said hand-holdable housing.
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Specification