Computer assisted subchondral injection

  • US 10,124,124 B2
  • Filed: 06/11/2014
  • Issued: 11/13/2018
  • Est. Priority Date: 06/11/2013
  • Status: Active Grant
First Claim
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1. A method for assisting subchondral injection comprising:

  • obtaining, using a processor of a computer, a model of bone and soft tissue of a patient, the model including cortical bone structure and trabecular bone structure for a bone;

    identifying and delimiting, using the processor of the computer, at least one void in the trabecular bone structure formed under cortical bone structure of the bone from the model of bone and soft tissue;

    identifying, using the processor of the computer, an injection site in the cortical bone structure from the model of bone and soft tissue and modeling of the at least one void;

    calculating, using the processor of the computer, a drilling depth to reach the at least one void in the trabecular bone structure;

    calculating and outputting, using the processor of the computer, navigation data for guiding at least a drilling tool relative to the injection site for drilling of the bone at the injection site to the drilling depth to reach the at least one void in the trabecular bone structure;

    tracking, with the processor of the computer, a registration tool identifying landmark points on the bone to reference the landmark points to the model of the bone and soft tissue; and

    navigating, with the processor of the computer, the drilling tool toward the injection site using the reference between the landmark points to the model of the bone and soft tissue and drilling the cortical bone structure to the drilling depth to reach the at least one void in the trabecular bone structure.

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