Patient-specific numerically controlled instrument

  • US 9,717,510 B2
  • Filed: 05/05/2014
  • Issued: 08/01/2017
  • Est. Priority Date: 04/15/2011
  • Status: Active Grant
First Claim
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1. A method for preparing a bone of a joint of a patient comprising:

  • mounting a patient specific reference guide on a bone of a joint of a patient, the patient specific reference guide having a three-dimensional inner surface preoperatively configured to mate and closely nest to a corresponding surface of the bone only in one position, wherein mounting the patient specific reference guide on a bone of a joint of a patient includes mounting the reference guide on a femoral head surface of the patient, and wherein the reference guide is configured for mating with the femoral head surface of the patient;

    coupling a housing of a numerically-controlled instrument to a connecting portion coupled to an outer surface of the reference guide;

    automatically registering the numerically controlled instrument to the bone by coupling the housing to the reference guide and without intraoperative computer-aided navigation;

    coupling a cutting tool to the housing;

    guiding the cutting tool along a patient-specific tool path using the numerically-controlled instrument while the housing is mounted to the reference guide, the patient-specific tool path determined preoperatively and stored in the numerically-controlled instrument; and

    preparing a portion of the bone using the cutting tool.

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