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Methods and handpiece for use in tissue dissection

  • US 8,979,881 B2
  • Filed: 05/29/2014
  • Issued: 03/17/2015
  • Est. Priority Date: 08/07/2009
  • Status: Active Grant
First Claim
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1. A method for dissection of subcutaneous tissue, comprising:

  • positioning a handpiece comprising a base, a conduit through a side of the handpiece and a tissue engaging chamber over a first region of target tissue,wherein the tissue engaging chamber is configured to allow elevation of a portion of the target tissue into the tissue engaging chamber, relative to surrounding tissue;

    coupling a guidance device to the handpiece,wherein the guidance device comprises a guidance track;

    elevating the target tissue into the tissue engaging chamber to a first position that is elevated relative to the surrounding tissue;

    engaging a cutting tool with the handpiece,wherein the cutting tool comprises a cutting blade with a distal end and a proximal end,wherein the cutting tool comprises a guide pin that interacts with the guidance track of the guidance device when the cutting tool is engaged with the handpiece;

    piercing the elevated tissue with the distal end of the cutting blade and advancing the distal end of the cutting blade into a subcutaneous region underlying the elevated target tissue;

    dissecting subcutaneous tissue in the subcutaneous region underlying the elevated target tissue with the distal end of the cutting blade by manipulating the cutting tool in a pattern defined by the interaction of the guidance track with the guide pin,wherein manipulating the cutting tool comprises moving the guide pin of the cutting tool within and along the guidance track, and wherein said movement results in the distal end of the cutting blade moving laterally through the subcutaneous region underlying the elevated target tissue while a portion of the cutting tool pivots within the conduit.

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