摘要:
A system for the internal fixation of a fractured bone includes a bone plate with threaded holes and two types of guides threadedly connected within the threaded holes. One guide is taller and smaller in diameter, whereas the other guide is shorter and wider in diameter. The guides provide guidance for drilling a hole through the guide and screw hole, and optional bending of the plate at the guide. The guides have structure allowing the guides to be individually removed through rotation.
摘要:
A bone plate system and method for implanting the bone plate. The bone plate may include a head portion and a shaft portion, the shaft portion having a longitudinal axis and comprising a plurality of discrete aperture clusters. Each aperture cluster may include a non-threaded, non-locking bone fastener aperture configured to provide a polyaxial compressive construct and at least one threaded, locking bone fastener aperture. Once aligned with the bone, a first bone fastener is inserted into the bone through at least one of the non-threaded apertures in a direction normal to the longitudinal axis, compressing the bone along the longitudinal axis of the shaft portion of the bone plate. A second bone fastener is inserted into the bone through at least one of the threaded, locking bone fastener apertures in a direction oblique to the longitudinal axis and securing the bone plate to the bone.
摘要:
Methods and systems for bone plate bending are provided which include bending tools that couple relative to the bone plate to bend the plate. Such system permit bending without necessitating that the bending tools are in direct contact with the holes in the plate, which could deform the holes.
摘要:
An orthopedic screw system includes a screw with a locking head that can both lockingly engage in a fixed angle threaded screw hole to secure a plate to a bone without compression, and non-lockingly engage at a compression screw hole to provide compression between the plate and the bone. The structure of the system is particularly well adapted to plates and screw of small dimensions, such as screws smaller than 3.5 mm and is capable of providing high compressive force, on the order of 120 lbs of axial load, without significant plastic deformation between the screw and plate. Further, the screw holes are structured for arrangement in tight clusters on the bone plate, thereby facilitating a compact design on the bone plate.
摘要:
A plate is provided with feet located laterally of adjacent compression screw holes and absent from about threaded locking holes so as to suspend the plate segment having the threaded locking holes from over the bone. This forces a minimum gap between the threaded holes and the bone, and allows the plate thereat to deflect under loads that can be practically delivered by the locking screws. By allowing the plate to deflect, the threads on the head of the locking screw can be aligned, or timed, with the threads of the threaded plate hole to reduce the required torque to insert the locking screw into the locking hole and the bone.
摘要:
A plate is provided with feet located laterally of adjacent compression screw holes and absent from about threaded locking holes so as to suspend the plate segment having the threaded locking holes from over the bone. This forces a minimum gap between the threaded holes and the bone, and allows the plate thereat to deflect under loads that can be practically delivered by the locking screws. By allowing the plate to deflect, the threads on the head of the locking screw can be aligned, or timed, with the threads of the threaded plate hole to reduce the required torque to insert the locking screw into the locking hole and the bone.
摘要:
A bone plate includes first and second longitudinal sides, a plurality of through holes longitudinally displaced in the bone plate between the first and second longitudinal sides, and a plurality of tubular guide elements coupled relative to the plurality of through holes. Plate bending tools are provided. Each includes a handle having a first end, a second end, and a longitudinal axis, and an end effector coupled to the first end of the handle. The end effector includes a retaining arm that is provided with a bore having a bore axis extending transverse relative to the longitudinal axis and a fulcrum. The bore is sized to received a portion of a tubular guide element coupled to the bone plate such that the retaining arm can stably engage the tubular guide element. The fulcrum is adapted to bear against one of longitudinal sides of the bone plate.
摘要:
Methods of bone plate reshaping are provided which include bending tools that couple relative to the bone plate to bend the plate and apply a sufficient force to the plate to remove portions of the plate. Such system permit bending without necessitating that the bending tools are in direct contact with the holes in the plate, which could deform the holes. In addition, such tools can be used while the plate is positioned on the bone.
摘要:
Methods and systems for bone plate bending are provided which include bending tools that couple relative to the bone plate to bend the plate. Such system permit bending without necessitating that the bending tools are in direct contact with the holes in the plate, which could deform the holes.
摘要:
A bone plate includes first and second longitudinal sides, a plurality of through holes longitudinally displaced in the bone plate between the first and second longitudinal sides, and a plurality of tubular guide elements coupled relative to the plurality of through holes. Plate bending tools are provided. Each includes a handle having a first end, a second end, and a longitudinal axis, and an end effector coupled to the first end of the handle. The end effector includes a retaining arm that is provided with a bore having a bore axis extending transverse relative to the longitudinal axis and a fulcrum. The bore is sized to received a portion of a tubular guide element coupled to the bone plate such that the retaining arm can stably engage the tubular guide element. The fulcrum is adapted to bear against one of longitudinal sides of the bone plate.