Patent ID: 6305935
Filing Date: 2001-10-23
Classification: A61C

Abstract:
A disposable contra-angle comprising:a body having one end connected to a motorized dental handpiece;a head section attached to the other end of the body;a bur member being adaptable for insertion into the head section;means within the body for translating rotational movement from the dental handpiece to the head section;the head section comprising:means within the head section for connecting to the rotational movement means within the body to translate the movement to the bur member;a cavity included therein,the bottom portion of the head having a concentric wall surface defining a round opening therein,the upper portion of the head section defining a recess, the recess having a depressed O-ring embedded therein,a rotating mandrel interposed within the cavity,an axis pole integral with and extending through and outwardly from the top and bottom center portions of the mandrel,the top of the axis pole having a concentric depression for adaptation to the O-ring for rotational connection and support within the recess,a cylindrical sheath extending downwardly from the recess for providing support, stabilization an d alignment of the axis pole,the bottom end of the axis pole having an aperture for receiving the bur member,the axis pole having means for releasably retaining and supporting the bur member.