MARKER BASED OPTICAL 3D TRACKING SYSTEM CALIBRATION

    公开(公告)号:US20240320861A1

    公开(公告)日:2024-09-26

    申请号:US18614884

    申请日:2024-03-25

    IPC分类号: G06T7/80

    CPC分类号: G06T7/80 G06T2207/30208

    摘要: Systems and methods for calibrating an optical tracking system, using a non-planar rigid artifact, are disclosed. Absolute calibration data comprising conditions for validity is determined based on the known geometry of the artifact. The optical tracking system is placed in the conditions for validity. A relative movement between the artifact and the optical sensor is produced across a working volume. Positional data is acquired for each of the plurality of fiducials using the optical sensor. An artifact geometry is determined based on the positional data and the absolute calibration data. The optical system is placed in a different condition. Relative movement is produced between the artifact and the optical sensor across the working volume. Raw positional data is acquired foreach of the plurality of fiducials using the optical sensor. Relative calibration parameters of the optical tracking system are determined based on the raw positional data and the artifact geometry.

    DEVICES AND SYSTEMS FOR ASSESSING LAXITY IN A JOINT

    公开(公告)号:US20240315906A1

    公开(公告)日:2024-09-26

    申请号:US18613461

    申请日:2024-03-22

    IPC分类号: A61G13/12

    摘要: A device for assessing laxity of a joint is disclosed. The device comprises a trial component comprising a base plate configured to couple to a tibia of the joint and a superior spacer coupled to the base plate. The base plate and the superior spacer define a cavity therebetween that may receive a portion of a tensioner tool. When force is applied via the tensioner tool, the superior spacer is configured to be selectively moved from a first position in contact with a superior surface of the base plate to a second position separated from the superior surface. A system for assessing laxity of a joint including a first bone and a second bone is also disclosed. The system comprises the trial component, the tensioner tool, and a processor configured to determine a gap distance associated with the first bone and the second bone during tensioning.