Patient-specific mill guide

  • US 9,839,434 B2
  • Filed: 10/19/2010
  • Issued: 12/12/2017
  • Est. Priority Date: 10/29/2009
  • Status: Active Grant
First Claim
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1. An orthopedic guide for preparing a particular patient'"'"'s bone to receive a prosthesis using a milling tool with a rotating burr, the orthopedic guide comprising:

  • a cutting platform having a top surface and a bottom surface adapted to face the patient'"'"'s bone, the platform having an elongated milling track that extends through the platform from the top surface to the bottom surface of the platform, the milling track including a plurality of substantially parallel segments and a transverse interconnecting segment that joins together the plurality of substantially parallel segments, the milling track occupying an extent of the platform to guide the milling tool across the patient'"'"'s bone with the burr of the milling tool rotating beneath the bottom surface of the platform to remove a first bone portion from the patient'"'"'s bone; and

    a plurality of legs projecting from the bottom surface of the platform, the legs being adjacent to an outer periphery of the platform, each of the plurality of legs comprising a referencing end that is contour-matching fabricated as a function of a three-dimensional computer model of the patient'"'"'s bone to be adapted to abut the patient'"'"'s bone such that the bottom surface of the platform is adapted to be spaced from the patient'"'"'s bone when the referencing ends of the plurality of legs abut the patient'"'"'s bone, the bottom surface being spaced from a native surface of the patient'"'"'s bone over the extent of the platform occupied by the milling track, the referencing ends of the plurality of legs adapted to cooperate to locate the orthopedic guide at a single predetermined location of the patient'"'"'s bone, the plurality of legs distributing a majority of force of the milling tool applied against the platform to the bone.

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