公开(公告)号：US20220273391A1

公开(公告)日：2022-09-01

申请号：US17747022

申请日：2022-05-18

申请人： Warsaw Orthopedic, Inc.

发明人： Newton H. Metcalf, JR. ,  Arjun Siby Kurian ,  Chris E. Johnson ,  Simon Calcutt ,  George Wylde ,  David Martin Pooley ,  Richard David Lintern

IPC分类号： A61B90/00 ,  A61B17/70

摘要： A load sensing assembly for a spinal implant is disclosed. The load sensing assembly may include: a set screw having a drive interface, a lower cavity for receiving a cover, the cover including a protrusion that may engage with an anchoring member. The load sensing assembly may further include an antenna, and at least one sensor having an integrated circuit in communication with the antenna. In some embodiments, the integrated circuit is positioned within a sealed cavity of the set screw. In some embodiments, the antenna comprises a ferrite core and a plurality of windings that are oriented laterally with respect to a longitudinal axis of the set screw. In some embodiments, the sealed cavity of the set screw is hermitically sealed, and the antenna may be mechanically isolated by a bellows or cylindrical can structure.