Bone plate for elastic osteosynthesis
First Claim
1. A method for flexible plate fixation of a bone fracture, the method comprising:
- approximately aligning fractured bone members;
applying a fixation construct across the bone fracture, the fixation construct including a bone plate having an upper surface and a bone-facing surface, the bone plate including a plurality of elastically suspended sliding elements including a receiving hole therein; and
inserting bone fasteners into the receiving holes of the elastically suspended sliding elements;
wherein the sliding elements are configured to permit controlled translation parallel to a longitudinal axis of the bone plate, while substantially preventing displacement perpendicular to the longitudinal axis of the bone plate, and wherein the bone fasteners are rigidly fixed to the sliding elements without compressing the bone plate or sliding elements onto a bone surface.
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Accused Products
Abstract
Embodiments provide a method and device for plate osteosynthesis of a bone fracture that allows angle-stable fixation of the bone fracture, while permitting elastic axial motion at the fracture site in a controlled, symmetric manner to stimulate fracture healing. Embodiments pertain to a bone plate having an outer surface and a bone-facing surface. The bone plate incorporating internal sliding elements containing a threaded receiving hole for bone screws that have a correspondingly threaded screw head. The sliding elements undergo controlled displacement parallel to the longitudinal axis of the plate but are substantially constrained against displacement perpendicular to the longitudinal axis of the plate. The bone screws with threaded heads may be rigidly fixed to the threaded receiving holes in the sliding elements without compressing the bone plate onto the hone surface. Sliding elements are elastically suspended inside the bone plate and undergo dynamic motion.
142 Citations
20 Claims
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1. A method for flexible plate fixation of a bone fracture, the method comprising:
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approximately aligning fractured bone members; applying a fixation construct across the bone fracture, the fixation construct including a bone plate having an upper surface and a bone-facing surface, the bone plate including a plurality of elastically suspended sliding elements including a receiving hole therein; and inserting bone fasteners into the receiving holes of the elastically suspended sliding elements; wherein the sliding elements are configured to permit controlled translation parallel to a longitudinal axis of the bone plate, while substantially preventing displacement perpendicular to the longitudinal axis of the bone plate, and wherein the bone fasteners are rigidly fixed to the sliding elements without compressing the bone plate or sliding elements onto a bone surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for flexible plate fixation of a bone fracture, the method comprising:
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approximately aligning two or more fractured bone members; positioning a bone plate across the bone fracture, the bone plate including an upper surface and a bone-facing surface, the bone plate including a plurality of elastically suspended sliding elements including a threaded receiving hole therein; and inserting bone fasteners into the threaded receiving holes of the elastically suspended sliding elements such that each of the bone fasteners engages one of the two or more fractured bone members; wherein the sliding elements are configured to permit controlled translation parallel to a longitudinal axis of the bone plate, while substantially preventing displacement perpendicular to the longitudinal axis of the bone plate, and wherein the bone fasteners are rigidly fixed to the sliding elements without compressing the bone plate or sliding elements onto a bone surface. - View Dependent Claims (19)
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20. A method for flexible plate fixation of a bone fracture, the method comprising:
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approximately aligning two or more fractured bone members; positioning a bone plate across the bone fracture, the bone plate including an upper surface, a bone-facing surface, a plurality of openings extending through the bone plate from the upper surface to the bone-facing surface and at least partially filled with an elastomer, and a corresponding plurality of receiving holes elastically suspended within the openings, the elastomer at least partially surrounding a periphery of the receiving holes within the openings; and inserting bone fasteners into the elastically suspended receiving holes such that each of the bone fasteners engages one of the two or more fractured bone members; wherein the receiving holes are configured to permit controlled translation parallel to a longitudinal axis of the bone plate, while substantially preventing displacement perpendicular to the longitudinal axis of the bone plate, and wherein the bone fasteners are rigidly fixed to the receiving holes without compressing the bone plate or receiving holes onto a bone surface.
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Specification