APPARATUS AND METHOD FOR BODY TISSUE FIXATION

摘要

A body tissue fixation apparatus includes a piate having oppositely disposed outer and tissue-contacting surfaces, and at least one fixation hole extending between the outer and tissue-contacting surfaces along a longitudinal axis. The fixation hole is defined in part by an inner hole surface having at least one serration. The plate is adapted for affixation to at ieast one body tissue member. At least one fixation device of the body tissue fixation apparatus has a shank and a head portion, the shank being insatabie through the fixation hole in the plate Io affix the plate to the body tissue member upon rotation of the head portion. At least one deformable member is connected to the head portion, the defopnabie member extending late-rally in a direction substantially perpendicular to the longitudinal axis and being adapted to deflect to engage with at least one serration formed on the inner hole surface. Engagement between the deformable member and the serration helps to prevent displacement of the fixation device within the fixation hole. A method for using the body tissue fixation apparatus is also described.