Patent ID: 7261561
Filing Date: 2007-08-28
Classification: A61C

Abstract:
1. A driver for vibrationally driving an endodontic activator; said driver comprising: a body having a handle and a neck; said neck including a pair of spaced apart arms extending from an end of said neck; each said arm including a hole extending through said arm, the holes of said arms being aligned with each other; said body defining a contra-angle, wherein said handle and said neck define an angle of between 15°-30° and wherein when said activator is mounted to said body, said activator and said neck define an angle of between 80°- 85°; a driven member including a mounting portion, a mounting arm extending from said mounting portion to which an endodontic activator is frictionally removably mountable and a connecting arm extending from said mounting portion; said connecting arm having a connection member at an end remote from said mounting portion; said connecting arm having an outer surface between said connection member and said mounting portion that is substantially straight and uninterrupted; said connecting arm and said mounting arm being spaced from each other about said mounting portion, such that said mounting arm and said connecting arm define an angle of between about 80° and about 90°; said driven member mounting portion being shaped and sized to be received between said neck arms; said driven member mounting portion defining a transverse hole which extends through said mounting portion; said driver including an axle which extends through said driven member mounting portion hole and into said neck arm holes; said axle pivotally mounting said driven member in said body and defining a pivot axis generally normal to an axis of said body about which said driven member can pivot; and a drive; said drive comprising a rotatable ellipse block having an axis of rotation; said driven member connecting arm being operatively connected to said rotatable ellipse block at a point offset from said axis of rotation of said rotatable ellipse block; whereby, when said ellipse block rotates, an end of said driven member connecting arm orbits about said axis of rotation, and the pivotal mounting portion of said driven member in said body converts said orbital motion of said connecting arm to oscillatory motion in said driven member mounting arm.