公开(公告)号：US20170135785A1

公开(公告)日：2017-05-18

申请号：US15368756

申请日：2016-12-05

Applicant: DENTSPLY SIRONA Inc.

Inventor： Randall MAXWELL ,  Vincent SHOTTON ,  KEVIN WILKINSON ,  Yong GAO

IPC: A61C5/42

CPC classification number: A61C5/42 ,  H01J9/025 ,  Y10T29/49567

Abstract: A hollow endodontic instrument having: a file axis; a proximal end; a tip; and a shaft portion between the proximal end and the tip; wherein the shaft portion defines a hollow void at least partially bounded by a plurality of fingers and a plurality of longitudinal spacings, each finger extends from the proximal end and includes an outer surface and an inner surface extending between longitudinal opposing walls; and wherein a portion of at least one of the longitudinal opposing walls includes a cutting edge.