Patient selectable joint arthroplasty devices and surgical tools
DC CAFCFirst Claim
Patent Images
1. 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.
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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.
781 Citations
81 Claims
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1. A method of generating a patient-matched surgical tool, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of making a patient-matched surgical tool, the method comprising:
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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. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. A method of creating a patient-specific instrument for implanting an orthopedic implant in or about a joint of a patient, the method comprising:
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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. - View Dependent Claims (67, 68)
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69. 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:
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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. - View Dependent Claims (70, 71)
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72. A patient specific surgical instrument for use in implanting an orthopedic implant in a patient, the process comprising:
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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.
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73. A method of using a patient-matched surgical instrument to implant an orthopedic implant, comprising:
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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. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80)
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81. A method of making a patient-matched surgical tool, the method comprising:
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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.
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Specification