PATIENT-SPECIFIC FEMORAL GUIDE
First Claim
1. A medical device for preparing an elongated bone for receiving an implant comprising:
- a femoral guide having a patient-specific three-dimensional bone-engaging surface configured according to a preoperative plan based on a three-dimensional image model of a proximal femoral bone to mate complementarily with the surface of the proximal femoral bone extending between a greater trochanter, a femoral neck and a femoral shaft of the proximal femoral bone, the femoral guide including a first guide end forming a planar guide configured for guiding a neck resection; and
an elongated alignment member removably attachable to the femoral guide and defining a reference axis for guiding a cutting tool into the proximal femoral bone through a resected surface of the femoral neck.
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Accused Products
Abstract
A medical device for preparing an elongated bone, such as a proximal femoral bone, for receiving an implant includes a patient-specific femoral guide and an elongated alignment element. The femoral guide has a patient-specific three-dimensional bone-engaging surface configured according to a preoperative plan based on a three-dimensional image model of the femoral bone to mate complementarily with the surface of the proximal femoral bone extending between the greater trochanter, the femoral neck and the femoral shaft of the proximal femur. The femoral guide includes a first guide end forming a planar guide configured for guiding a neck resection. The alignment member can be removably attached to the femoral guide and defines a reference axis for guiding a cutting tool into the femoral bone through a resected surface of the femoral neck.
335 Citations
27 Claims
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1. A medical device for preparing an elongated bone for receiving an implant comprising:
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a femoral guide having a patient-specific three-dimensional bone-engaging surface configured according to a preoperative plan based on a three-dimensional image model of a proximal femoral bone to mate complementarily with the surface of the proximal femoral bone extending between a greater trochanter, a femoral neck and a femoral shaft of the proximal femoral bone, the femoral guide including a first guide end forming a planar guide configured for guiding a neck resection; and an elongated alignment member removably attachable to the femoral guide and defining a reference axis for guiding a cutting tool into the proximal femoral bone through a resected surface of the femoral neck. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical device for preparing a proximal femoral bone for an implant comprising:
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a femoral guide having a patient-specific three-dimensional bone-engaging surface configured to mate complementarily with the surface of the proximal femoral bone extending between the greater trochanter based on a three-dimensional image model of the femoral bone, the femoral neck and the femoral shaft of the proximal femur, the femoral guide including a first guide end forming a planar guide configured for guiding a neck resection; a cutting tool for preparing the proximal femoral bone after the neck resection; a driver tool for holding and driving the cutting tool into the femoral bone along a first axis; an elongated alignment member attachable to the femoral guide and extending along a second axis; and a connector slidably couplable to the alignment member and to the driver tool and having a patient-specific distance between the first and second axes for guiding the cutting tool into the femoral bone through a resected surface of the femoral neck at a position determined during a preoperative plan based on the three-dimensional image model of the femoral bone. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for preparing a proximal femoral bone for an implant comprising:
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attaching a patient-specific femoral guide to the proximal femoral bone; guiding a cutting instrument along a planar cutting guide of the femoral guide; cutting a femoral neck of the proximal femoral bone along a patient-specific plane using the cutting guide; coupling a cutting tool to a driver tool; slidably connecting the driver tool to an alignment member extending from the patient-specific guide along a reference axis such that the cutting tool is automatically positioned at a preselected distance from the reference axis and at a preselected location relative to the resected femoral neck; and preparing the proximal femoral bone for receiving an implant using the cutting tool. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification