公开(公告)号：US20230414321A1

公开(公告)日：2023-12-28

申请号：US18244014

申请日：2023-09-08

Applicant: FLEXSCREWDRIVER I.K.E.

Inventor： KONSTANTINOS VALAVANIS

IPC: A61C1/18 ,  B25B23/00 ,  B25B13/48 ,  A61B90/92 ,  A61B17/88 ,  A61C1/14 ,  A61C8/00

CPC classification number: A61C1/18 ,  B25B23/0028 ,  B25B13/481 ,  B25B23/0021 ,  A61B2017/00464 ,  A61B17/8875 ,  A61C1/14 ,  A61C8/0089 ,  A61C8/0068 ,  A61B90/92

Abstract: A shaft for a dental screwdriver configured to be inserted into a bore cavity of a dental prosthetic. The shaft has a drive tip for driving a dental screw used to fix the dental prosthetic to the dental implant when the shaft is inserted into the bore cavity of the dental prosthetic. The drive tip is made of a shape memory smart alloy. The shaft also has an axial shaft portion made of a shape memory smart alloy with different material characteristics than the shape memory smart alloy of the drive tip. The axial shaft portion is configured to elastically bend from an original shape to a bent shape along the axial shaft portion without imparting a bending action and torqueing forces along the drive tip when the dental screwdriver is inserted into the bore cavity of the dental prosthetic.