Patient selectable joint arthroplasty devices and surgical tools
AssigneeConforMIS, Inc.
InventorsWolfgang Fitz, Philipp Lang, Raymond A. Bojarski, Daniel Steines
Life of this patent
Estimating the term…
Abstract
A patellar 3-D guidance tool includes a template. The template includes at least one contact surface for engaging a surface of the patella. The at least one contact surface substantially conforms with the surface associated with the patellar. At least one guide aperture directs movement of a surgical instrument, wherein the shape and/or position of the guide aperture is based, at least in part, on three or more anatomic reference points associated with the patellar.
Claims81
A method of generating a patient-matched surgical tool, the method comprising:
- obtaining first image data associated with at least a portion of a joint of a patient;
- obtaining second image data associated with at least a portion of the joint;
- deriving an electronic model of at least a portion of the joint using at least the first image data;
- creating a surgical tool using, at least in part, the electronic model;
- wherein the tool includes a contact surface substantially matched to a corresponding surface of the joint and a guide for directing movement of a surgical instrument;
- and
- wherein the position or orientation of the guide relative to contact surface is adapted at least in part based on information derived from the second image data.
A method of making a patient-matched surgical tool, the method comprising:
- obtaining first image data associated with at least a portion of a joint of a patient;
- obtaining x-ray image data associated with at least a portion of the joint;
- determining from the x-ray image data at least one of an anatomical and mechanical axis associated with the joint;
- creating a surgical tool based at least in part on the first image data and the x-ray image data;
- wherein the surgical tool includes a contact surface substantially matched to a corresponding surface of the joint and a guide for directing movement of a surgical instrument, the guide having a predetermined orientation based at least in part on the determined axis.
A method of creating a patient-specific instrument for implanting an orthopedic implant in or about a joint of a patient, the method comprising:
- creating a patient-specific surgical instrument based at least in part on first and second image data sets,
- wherein the first image data set is of a type that is different from the second image data set, and the second image data set is x-ray image data;
- wherein the surgical instrument has a patient-specific surface that is derived from at least the first image data and that substantially matches a corresponding surface portion associated with the joint;
- and
- wherein the surgical instrument has a guide that is oriented relative to the patient-specific surface based on information derived from the second image data set.
A method of designing a patient-specific instrument for use in implanting an orthopedic implant in or about a joint of a patient, the method comprising:
- designing a patient-specific surgical instrument based at least in part on first and second image data sets, wherein the first image data set is of a type that is different from the second image data set, and the second image data set is x-ray image data;
- wherein the surgical instrument has a patient-specific surface that is derived from at least the first image data and that substantially matches a corresponding surface portion associated with the joint;
- and
- wherein the surgical instrument has a guide that is oriented relative to the patient-specific surface based on information derived from the second image data set.
A patient specific surgical instrument for use in implanting an orthopedic implant in a patient, the process comprising:
- determining at least in part from a first set of image data the surface contours of at least a portion of a surface of or near a joint of the patient;
- determining at least in part from a second set of image data an axis associated with the joint;
- incorporating a patient-specific surface into the surgical instrument such that the patient-specific surface substantially matches the determined surface contours;
- incorporating a guide into the surgical instrument, wherein the guide is oriented relative to the patient-specific surface based at least in part on the determined axis.
A method of using a patient-matched surgical instrument to implant an orthopedic implant, comprising:
- placing a patient-specific surface of the implant against a corresponding surface portion of or near a joint of the patient such that the patient-specific surface is substantially entirely engaged against the corresponding surface portion of the patient;
- cutting or drilling a portion of the tissue in or near the joint of the patient using a guide of or attached to the patient matched surgical instrument;
- and
- implanting an implant in or near the joint;
- wherein the guide has a predetermined alignment relative to the patient-specific surface derived at least in part from x-ray image data of at least a portion of the joint;
- and
- wherein the patient-specific surface is derived from other image data of at least a portion of the joint.
A method of making a patient-matched surgical tool, the method comprising:
- obtaining first image data associated with at least a portion of a joint of a patient;
- obtaining x-ray image data associated with at least a portion of the joint;
- determining from the x-ray image data information about a desired alignment or correction of the joint;
- creating a surgical tool based at least in part on the first image data and the x-ray image data;
- wherein the surgical tool includes a contact surface substantially matched to a corresponding articular surface of the joint and a guide for directing movement of a surgical instrument, the guide having a predetermined orientation based at least in part on the information about the desired alignment or correction of the joint.
Dependencies are inferred from the claim text.