Patient-specific-bone-cutting guidance instruments and methods

  • US 9,668,747 B2
  • Filed: 09/25/2015
  • Issued: 06/06/2017
  • Est. Priority Date: 07/01/2011
  • Status: Active Grant
First Claim
Patent Images

1. A patient-specific alignment guide system for cutting or resurfacing an outer bone surface of a bone of a patient, the alignment guide system comprising:

  • a patient-specific alignment guide having an engagement surface mirroring the outer bone surface;

    a first guiding formation connected to the alignment guide on a non-engaging surface to direct a reference pin into the bone at a desired location;

    a reference pin configured to extend through the first guiding formation; and

    a cutting effector system comprising;

    a vibratory cutting tool having a patient-specific cutting support surface mirroring the outer bone surface and a patient-specific cutting surface including grinding elements;

    a guide member for coupling to the reference pin, the guide member comprising an angled guiding shaft having a distal portion angled with respect to a proximal portion; and

    a guide connecting the vibratory cutting tool and the guide member, the guide comprising;

    a guide tube slidably engaged with the proximal portion of the angled guiding shaft; and

    a connector extending from the guide tube and connected to the vibratory cutting tool;

    wherein the angled guiding shaft and the connector are sized and shaped so that the guide tube can be translated on the proximal portion of the angled guiding shaft so that the patient-specific cutting surface can engage the outer bone surface that is mirrored by the patient-specific cutting support surface; and

    wherein the guide is translatable on the guide member to bring the cutting surface into engagement with the outer bone surface.

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