Modular Head For Pedicle Screw
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Oct 17, 2024
app pub date -
Aug 4, 2022
filing date -
Aug 4, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
A spinal fixation device includes a modular head assembly and a bone screw having a head and a shank. The modular head assembly includes: a housing defining a throughhole from a proximal surface to a distal surface of the housing; an anvil slidable within the throughhole; a washer; an assembly cap secured to the housing; a first biasing member arranged to bias the anvil toward the proximal surface of the washer; a retaining ring positioned at least partially within the cavity of the assembly cap; and a second biasing member arranged to bias the retaining ring toward the second portion of the assembly cap. Movement of the retaining ring from a first portion of the assembly cap to a second portion of the assembly cap compresses the retaining ring from a neutral configuration to a compressed configuration thereby securing the bone screw relative to the housing.
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