Patent ID: 8475481
Filing Date: 2013-07-02
Classification: A61B,A61M

Abstract:
1. A surgical cutting accessory for attachment to a surgical handpiece, the surgical handpiece having an open-ended bore and a discharge port that opens into the bore, said cutting accessory including: a static hub, said static hub shaped to have: a section dimensioned to be seated in the surgical handpiece bore; an outer surface; a stepped surface that is located in the section of said outer hub dimensioned to be seated in the surgical handpiece bore and that is located inwardly of the adjacent hub outer surface; axially opposed first and second ends; a through bore that extends from the first end to the second end; a geometric feature for receiving a locking element that holds said static hub to the handpiece; and an inlet bore for receiving fluid from the handpiece discharge port, said inlet bore extending inwardly from an opening in the stepped surface of said static hub to the through bore; a seal formed from compressible material mounted to the static hub adjacent the static hub stepped surface, said seal have an exposed surface located adjacent and outwardly of the opening into the static hub inlet bore; an outer tube mounted to said static hub that extends outwardly from the second end of said static hub over the through bore of said static hub; a rotating hub that is located adjacent the first end of said static hub, said rotating hub having: features configured to cooperate with the handpiece so that actuation the handpiece results in rotation of said rotating hub; and a bore with a distal end; and an inner tube having: a proximal section that is attached to said rotating hub so that said inner tube rotates in unison with said rotating hub; a center bore that opens into the distal end of the rotating hub bore through which a suction can be drawn; and a distal end spaced from the proximal end, said inner tube positioned to extend forward of said rotating hub through the through bore of said static hub and into said outer tube wherein, said inner tube and said outer tube are spaced apart from each other so as to form an annular channel therebetween, the inlet bore of said static hub being in fluid communication with the annular channel and wherein, the distal end of said inner tube is provided with a cutting head.