Manual bone anchor placement devices
AssigneeSciMed Life Systems, Inc.
InventorsGhaleb A. Sater, Armand Morin, Barry N. Gellman, Steven P. Beaudet
Life of this patent
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Abstract
Manual bone anchor placement devices include a lever, a force translator and a rotary force mechanism. The devices are substantially gun- or pistol-shaped and are actuated when a user squeezes the lever to the gripping portion of a handle. Manual, linear force on the lever is mechanically translated through the force translator to the rotary force mechanism, which transmits a rotary force to a securing element, or coupler, which mates with a bone anchor screw. The rotation of the securing element or coupler applies a torque on the bone anchor screw thereby placing the screw into the bone. A collapsible, protective cover for a bone anchor screw is also disclosed.
Claims11
A manual bone anchor placement device, comprising:
- a manually-actuatable lever;
- a force translator comprising a distal end and a proximal end, the distal end receiving force from the lever;
- a rack coupled to the proximal end of the force translator, receiving force from the force translator, the rack moving linearly into an engaging position in response to the force from the force translator;
- a rotator positioned in close proximity to the rack, engaging with the rack when the rack moves into the engaging position and rotating in response to engagement by the rack.
Dependencies are inferred from the claim text.