Liposuction cannula with abrading apertures

Abstract

A liposuction cannula with abrading suction apertures and a method of using a cannula with abrading suction apertures are disclosed. The liposuction cannula comprises: a hand-holdable housing having a cavity; a cannular tube having a distal end and a proximal end, the proximal end of the cannular tube being insertable within the cavity; and a plurality of abrading suction apertures about the cannular tube distal end. The abrading suction apertures can be arranged in a variety of configurations, for example, axially about the distal end of the cannular tube, radially about the distal end of the cannular tube or angularly about the distal end of the cannular tube. The abrading suction apertures include a hole, and an abrading member which may be a raised leading edge, a depressed trailing edge, or both a raised leading edge and a depressed trailing edge.

What is claimed is:  
     
         1 . A liposuction cannula comprising: 
 a) a hand-holdable housing having a cavity;    b) a cannular tube having a distal end and a proximal end, the proximal end of the cannular tube being insertable within the cavity; and    c) a plurality of abrading suction apertures about the cannular tube distal end.    
     
     
         2 . The liposuction cannula of  claim 1 , wherein the abrading suction apertures are arranged axially about the distal end of the cannular tube.  
     
     
         3 . The liposuction cannula of  claim 1 , wherein the abrading suction apertures are arranged radially about the distal end of the cannular tube.  
     
     
         4 . The liposuction cannula of  claim 1 , wherein the abrading suction apertures are arranged angularly about the distal end of the cannular tube.  
     
     
         5 . The liposuction cannula of  claim 1 , wherein the abrading suction apertures comprise: 
 a) a hole;    b) a raised leading edge; and    c) a depressed trailing edge.    
     
     
         6 . The liposuction cannula of  claim 1 , wherein the abrading suction apertures comprise: 
 a) a hole; and    b) a raised leading edge.    
     
     
         7 . The liposuction cannula of  claim 1 , wherein the abrading suction apertures comprise: 
 a) a hole; and    b) a depressed trailing edge.    
     
     
         8 . A method of performing liposuction at an adipose tissue site, the method comprising: 
 a) providing to the tissue site a tumescent quantity of a solution comprising a clinically effective dosage of a local anesthetic and a vasoconstrictor;    b) providing a liposuction cannula having a distal end and a proximal end, the liposuction cannula having a plurality of abrading suction apertures about the distal end of the cannula;    c) placing the liposuction cannula within the adipose tissue site and attaching its proximal end to a vacuum source; and    d) activating the vacuum source while longitudinally moving the cannula forward and backward within the tissue site.    
     
     
         9 . The method of  claim 8 , wherein the abrading suction apertures are arranged axially about the distal end of the cannula.  
     
     
         10 . The method of  claim 8 , wherein the abrading suction apertures are arranged radially about the distal end of the cannula.  
     
     
         11 . The method of  claim 8 , wherein the abrading suction apertures are arranged angularly about the distal end of the cannula.  
     
     
         12 . The method of  claim 8 , wherein the abrading suction apertures comprise: 
 a) a hole;    b) a raised leading edge; and    c) a depressed trailing edge.    
     
     
         13 . The method of  claim 8 , wherein the abrading suction apertures comprise: 
 a) a hole; and    b) a raised leading edge.    
     
     
         14 . The method of  claim 8 , wherein the abrading suction apertures comprise: 
 a) a hole; and    b) a depressed trailing edge.