Patient-specific tools and implants
AssigneeBiomet Manufacturing, LLC
InventorsJason D. Meridew, John R. White, Robert Metzger
Life of this patent
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Abstract
A method for preparing a femoral neck for receiving a neck implant includes obtaining image data of a proximal femoral bone and femoral neck of a patient by a medical imaging method and constructing a three-dimensional image model of the proximal femoral bone and neck of the patient using the image data. The method further includes identifying a three-dimensional cortical boundary surface at an interface between cortical and cancellous bone of the patient using the image model. A patient-specific broach having a three-dimensional cutting surface closely matching and complementary to the cortical boundary surface of the patient using the image model is designed and manufactured.
Claims12
A method for preparing a femoral neck for receiving a neck implant comprising:
- obtaining image data of a proximal femoral bone and femoral neck of a specific patient by a medical imaging method;
- constructing a three-dimensional image model of the proximal femoral bone and neck of the specific patient using the image data;
- identifying a three-dimensional cortical boundary surface at an interface between cortical and cancellous bone of the specific patient using the three-dimensional image model;
- designing a patient-specific broach having a three-dimensional cutting surface matching as a negative mold the cortical boundary surface of the specific patient using the three-dimensional image model and configured for removing the cancellous bone without removing the cortical bone;
- manufacturing the patient-specific broach;
- designing a patient-specific neck implant having a body with a three-dimensional outer surface matching as a negative mold of the cortical boundary surface of the patient using the three-dimensional image model;
- manufacturing the patient-specific neck implant;
- and
- sizing the neck implant to extend only into the femoral neck of the specific patient and have a patient-specific length determined from the three-dimensional image model of the specific patient.
A method for preparing a femoral neck for receiving a neck implant comprising:
- obtaining image data of a proximal femoral bone and femoral neck of a specific patient by a medical imaging method;
- constructing a three-dimensional image model of the proximal femoral bone and neck of the specific patient using the image data;
- identifying a three-dimensional cortical boundary surface at an interface between cortical and cancellous bone of the specific patient using the three-dimensional image model;
- designing a patient-specific broach having a three-dimensional cutting surface matching as a negative mold the cortical boundary surface of the specific patient using the three-dimensional image model and configured for removing the cancellous bone without removing the cortical bone;
- manufacturing the patient-specific broach;
- and
- designing the patient-specific broach to include a coupling component for coupling the patient-specific broach to a non-custom driver tool wherein the coupling component includes a second bore defined through a proximal end surface of the patient-specific broach for receiving a second rod extending from a distal end surface of the non-custom driver tool.
A method for preparing a femoral neck for receiving a neck implant comprising:
- obtaining image data of a proximal femoral bone and femoral neck of a specific patient by a medical imaging method;
- constructing a three-dimensional image model of the proximal femoral bone and neck of the specific patient using the image data;
- identifying a three-dimensional cortical boundary surface at an interface between cortical and cancellous bone of the specific patient using the three-dimensional image model;
- designing a patient-specific broach having a three-dimensional cutting surface matching as a negative mold the cortical boundary surface of the specific patient using the three-dimensional image model and configured for removing the cancellous bone without removing the cortical bone, the patient-specific broach including a coupling component for coupling the patient-specific broach to a non-custom driver tool, the coupling component including a first rod extending from a proximal end surface of the patient-specific broach to be received in a first bore defined through a distal end surface of the non-custom driver tool, the coupling component including a second bore defined through the proximal end surface of the patient-specific broach for receiving a second rod extending from the distal end surface of the non-custom driver tool;
- and
- manufacturing the patient-specific broach.
Dependencies are inferred from the claim text.