Device for suction-assisted lipectomy and method of using same
First Claim
1. A device for suction assisted lipectomy comprising:
- a hollow cannula having at least one opening in the distal end and means for connecting the cannula to a negative pressure source at the proximal end;
a handle, operatively connected to the cannula, for use by a surgeon to direct and control the distal end in the surgical site and advance the cannula into and withdraw the cannula from the surgical site with the required control and force; and
energy transferring means, operatively and fixedly positioned proximate the opening and operatively connected to an energy source, for transferring energy to adipose tissue drawn into the cannula through the at least one opening.
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Accused Products
Abstract
A device is described which allows simultaneous application of suction or vacuum for evacuation of fat with application of energy to the fat inside an opening in a cannula. A pair of electrodes is situated within the cavity of the cannula just under the surface of cannula tip opening(s) or as part of the walls of such openings. The electrodes are spaced to allow coagulation of fat entering the cannula. Irrigation may be applied in a continuous or discontinuous or intermittent stream within the cannula to cool the tip and facilitate removal of suctioned tissue and prevent buildup of debris on electrodes. A method for using the cannula to remove adipose tissue or fat destroyed by the energy application through the use of suction with mechanical motion of the cannula, with energy application and optionally with the use of irrigation is also disclosed.
361 Citations
29 Claims
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1. A device for suction assisted lipectomy comprising:
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a hollow cannula having at least one opening in the distal end and means for connecting the cannula to a negative pressure source at the proximal end; a handle, operatively connected to the cannula, for use by a surgeon to direct and control the distal end in the surgical site and advance the cannula into and withdraw the cannula from the surgical site with the required control and force; and energy transferring means, operatively and fixedly positioned proximate the opening and operatively connected to an energy source, for transferring energy to adipose tissue drawn into the cannula through the at least one opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for performing a lipectomy comprising the steps of:
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providing a device comprising; a hollow cannula having at least one opening in the distal end and means for connecting the cannula to a negative pressure source at the proximal end; a handle, operatively connected to the cannula, for use by a surgeon to direct and control the distal end of the device in a surgical site and advance the cannula into and withdraw the cannula from the surgical site with the required control and force; energy transferring means, operatively positioned proximate the opening and operatively connected to an energy source, for transferring energy to adipose tissue drawn into the cannula through the at least one opening; and means, operatively connected to the cannula, for delivering irrigation fluid to the vicinity of the energy transferring means; inserting the device through relatively small skin incisions to gain access to the adipose tissue to be removed; maneuvering the device into and out of the tissue in order to traverse a large area of the adipose tissue in successive passes of the device in and out along the long axis of the device; simultaneous with the maneuvering motion by the surgeon, applying suction through a suction channel formed in the cannula; applying energy to the energy transfer means during the advancement and withdrawal of the cannula; and irrigating to provide cooling for the energy transferring means and the opening and to reduce buildup of debris around the energy transferring means and within the cannula. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A surgical device comprising:
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a hollow cannula having at least one opening in the distal end and means for connecting the cannula to a negative pressure source at the proximal end; a handle, operatively connected to the cannula, for use by a surgeon to direct and control the distal end in the surgical site and advance the cannula into and withdraw the cannula from the surgical site with the required control and force; energy transferring means, operatively and fixedly positioned proximate the opening and operatively connected to an energy source, for transferring energy to adipose tissue drawn into the cannula through the at least one opening; and means, operatively connected to the cannula, for delivering irrigation fluid to the vicinity of the energy transferring means.
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21. A system for performing a lipectomy comprising:
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a device comprising; a hollow cannula having at least one opening in the distal end and means for connecting the cannula to a negative pressure source at the proximal end; a handle operatively connected to the cannula, for use by a surgeon to direct and control the distal end in a surgical site and advance the cannula into and withdraw the cannula from the surgical site with the required control and force; energy transferring means, operatively and fixedly positioned proximate the opening and operatively connected to an energy source, for transferring energy to adipose tissue drawn into the cannula through the at least one opening; and means, operatively connected to the cannula, for delivering irrigation fluid to the vicinity of the energy transferring means; means, operatively connected to the device, for applying suction through a suction channel operatively formed in the cannula, the suction being applied simultaneous with the maneuvering motion by the surgeon; means, operatively connected to the device, for applying energy to the energy transfer means during the advancement and withdrawal of the cannula; and means, operatively connected to the device, for cooling the energy transferring means and the opening and to reduce buildup of debris around the energy transferring means and within the cannula. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification