公开(公告)号：US10351934B2

公开(公告)日：2019-07-16

申请号：US14541872

申请日：2014-11-14

Applicant: DENTSPLY SIRONA Inc.

Inventor： Dan Ammon ,  Vincent Shotton ,  Yong Gao ,  Randall Maxwell

IPC: C22F1/10 ,  C22C18/02 ,  C21D6/00 ,  C21D9/00 ,  C22C9/00 ,  C22C9/06 ,  C22C19/03 ,  C22C30/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/10 ,  C22C38/12 ,  C22C38/40 ,  C22F1/00 ,  C22F1/08 ,  A61C5/42

Abstract: A method for manufacturing a nonlinear superelastic file comprising the steps of: providing a superelastic file having a shaft and a file axis; providing a fixture including a file groove being defined by one or more displacement members, the file groove configured for receiving the shaft; inserting at least a portion of the shaft into the fixture along the file groove, the portion of the shaft including a first portion of the shaft; contacting the first portion of the shaft with a first displacement member of the one or more displacement members such that the first portion of the shaft is displaced from the file axis thereby forming a first offset portion of the shaft; heating the portion of the shaft while inserted in the fixture to a temperature of at least about 300° C. for a time period of at least about 1 minute to shape-set the portion of the shaft thereby forming a shape-set nonlinear file.

公开(公告)号：US11806203B2

公开(公告)日：2023-11-07

申请号：US17130057

申请日：2020-12-22

Applicant: DENTSPLY SIRONA Inc.

Inventor： Vincent Shotton ,  Kevin Wilkinson

IPC: A61C17/02 ,  A61C5/50 ,  A61C1/00

CPC classification number: A61C17/0202 ,  A61C1/0023 ,  A61C5/50

Abstract: A motor driven syringe dispenser which has a syringe mounting part, a slider, and a connection for an endodontic motor. The syringe dispenser connects to an endodontic motor which is used to drive a plunger of a syringe placed in the syringe mounting part thereby expressing irrigant into a root canal for root canal therapy.

公开(公告)号：US10966801B2

公开(公告)日：2021-04-06

申请号：US15871523

申请日：2018-01-15

Applicant: DENTSPLY SIRONA Inc.

Inventor： Vincent Shotton ,  Dan Ammon

IPC: A61C5/42

Abstract: A rotatable endodontic file for cleaning/shaping a tooth root canal that includes an elongated shaft having a proximal end portion, a distal end and a tapered working portion having a rotational axis, the working portion extending from the proximal portion to the distal end; the external surface of the shaft working portion having a plurality of parallelogram-shaped cross sections along the working portion.

公开(公告)号：US10350028B2

公开(公告)日：2019-07-16

申请号：US15801357

申请日：2017-11-02

Applicant: DENTSPLY SIRONA Inc.

Inventor： Vincent Shotton ,  Dan Ammon ,  Naim Karazivan

IPC: A61C1/00 ,  A61C1/14 ,  A61C1/02 ,  A61C1/12 ,  A61C1/18 ,  A61C1/07 ,  A61C5/40 ,  A61C5/42

Abstract: A multi-directional handpiece that includes a motor drive extending along and configured for rotation about a body axis, the motor drive having: a motor gearing at a proximal end of the motor drive; and a file gearing in engagement with the motor gearing for transferring the rotational and axial movement to a workpiece; and a housing for the workpiece; and wherein through rotation of the motor drive, the workpiece moves in an axial oscillating motion while being rotated.