Surgical instrument for positioning osteosynthetic elements
AssigneeSynthes USA, LLC
InventorRobert Frigg
Life of this patent
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Abstract
A surgical instrument for treating fractures of the neck and shaft of the femur has a frame attachable to an intramedullary pin inserted in the medulla and bearing a drill jig for inserting screws into the femur head.
Claims16
Surgical instrument for positioning osteosynthetic elements comprising a U-shaped frame having a first leg and a second leg, said first leg comprising anchoring means for attaching said frame to a medullary pin at a predetermined position relative to said frame and a drill jig attached to said second leg, said drill jig having a drill bushing extending without intersecting the longitudinal axis of a medullary pin attached by said anchoring means to said first leg in said predetermined position.
A system for the treatment of fractures of the neck and shaft of a femur comprising a frame having a first leg and a second leg substantially parallel to said first leg, a pin for insertion into the medulla of the femur to be treated, means for connecting said first leg to said pin, a drill jig and means for connecting said drill jig to said second leg, said drill jig having a bushing extending without intersecting the longitudinal axis of pin when said pin is connected to said first leg.
A method for treating fractures of the neck and shaft of the femur which comprises inserting a manipulative pin in the medulla of the femur, attaching a U-shaped frame having two parallel legs to said pin by attaching a first leg coaxially to said pin, attaching a drill jig to the second leg of said frame, inserting a screw by means of said drill jig through the neck and into the head of the femur without intersecting the longitudinal axis of said pin, withdrawing the manipulative pin from the medulla, and inserting a treatment pin into the medulla.
Surgical instrument for positioning osteosynthetic elements comprising a U-shaped frame having a first leg and a second leg, said first leg comprising a hollow cylinder, anchoring means at said first leg for attachment to a medullary pin and a drill jig attached to said second leg, said drill jig having a drill bushing positioned to extend tangentially to a medullary pin attached by said anchoring means to said first leg, said anchoring means comprising a conical bolt having a front threaded segment, a rear threaded segment and a nut, said nut having threads matching the threads on said rear segment, said conical bolt being adapted to be inserted through said hollow cylinder, and by means of said nut and said threaded segments separably connected with a medullary pin.
Surgical instrument for positioning osteosynthetic elements comprising a U-shaped frame having a first leg and a second leg, anchoring means at said first leg for attachment to a medullary pin and a drill jig attached to said second leg, said drill jig comprising a longitudinal bar, means connecting said bar to said second leg, a slide positioned to slide longitudinally on said bar and a drill bushing rotatably mounted on said slide and positioned to extend tangentially to a medullary pin attached by said anchoring means to said first leg.
A system for the treatment of fractures of the neck and shaft of a femur comprising a frame having a first leg and a second leg substantially parallel to said first leg, a pin for insertion into the medulla of the femur to be treated, means for connecting said first leg to said pin, a drill jig, connecting means for connecting said drill jig to said second leg, said connecting means comprising a bar, a slide displaceable along said bar, means for rotatably mounting said jig on said slide and means connecting said bar to said second leg, said drill jig also having a bushing extending tangentially to said pin when said pin is connected to said first leg.
Dependencies are inferred from the claim text.