AUTOMATIC RATCHETING SCREWDRIVER
    8.
    发明公开

    公开(公告)号:EP3705069A2

    公开(公告)日:2020-09-09

    申请号:EP20160901.3

    申请日:2020-03-04

    申请人: K2M, Inc.

    IPC分类号: A61B17/70 A61B17/88

    摘要: A screwdriver for driving a screw in bone includes a first body configured to engage a tulip of the screw, a first central bore extending through the first body, a second body having a second central bore extending through the second body and an external surface having a spline member positioned at least partially within the cavity, an inner shaft configured to drive a screw into bone and being rotatably coupled with the second body, a spring-biased pawl engageable with the spline member of the second body, a collar rotatable relative to the first body and the second body and having a cammed inner surface, when the collar is rotated in a first direction about the first body, the cammed inner surface pushes the spring-biased pawl into engagement with the spline member to rotatably couple the first body and the second body.