US 12,343,229 B2 · End cut of endodontic brush

Abstract

In some embodiments, the distal end of an endodontic brush unevenly (e.g., not along a line perpendicular to the axis of the brush). Optionally, the uneven strands will contact the walls of a channel more evenly and/or will have an increased stirring effect than an evenly cut end may be cut using an abrasive cutter (e.g., a grinding wheel) and/or a laser and/or an electrical discharge machining (EDM) cutter. Optionally, a grinding wheel will rotate opposite the winding of the wire. Optionally, a round end may be formed on the wire. In some embodiment, a coupling between an endodontic brush and a handpiece in configured to be held rotationally top the handpiece by friction and/or locked longitudinally into the handpiece by an interference element. In some embodiments, an edge of the brush is roughened. Optionally, the brush may be bent and/or eccentric.

Claims12

Dependent claims

An endodontic brush comprising:

a coupler for coupling to a handpiece;
a central longitudinal flexible core supported at a handpiece end by said coupler;
and
a distal tip of the core including a plurality of strands being wound in a winding direction and unbonded so that during use when the brush is rotated in a direction opposite to said winding direction the strands unwind and open to form a brush, and
a helical wire at least partially surrounding the core and extending distally toward the distal tip of the core opposite a handle end of the endodontic brush and wherein the distal tip of the core protrudes distally beyond a distal end of the helical wire and wherein a transitional portion at the distal end of the helical wire is unwound from the core.

2 more elements

Dependencies are inferred from the claim text.

End cut of endodontic brush

Life of this patent

End cut of endodontic brush

Life of this patent

Abstract

Claims12