Spacer device and insertion instrument for use in anterior cervical fixation surgery

摘要

An intervertebral spacer has curvate upper and lower rough surfaces that stimulate bone growth and is formed from a porous material that facilitates bone growth thereinto. The spacer has a plurality of smooth linear grooves to facilitate insertion of the spacer into an intervertebral space using a spacer insertion tool that has a scissor-style body. Each of the insertion tool's arm's heads has an inner surface having a pair of smoothed linear protrusions that fit within the linear grooves of the spacer when the heads are closed about the spacer. When the spacer is held, spaces are present between the spacer's rough surfaces and the heads' inner surfaces so that when the protrusions are longitudinally slid from the grooves to leave the spacer in the intervertebral spacer, the rough surfaces are not disturbed.

主权项

1. An intervertebral spacer device, comprising:
a spacer body dimensioned to fit between an upper and lower vertebrae, the spacer body having a leading end, a trailing end, and first and second sides extending between the leading and trailing ends, and upper and lower surfaces extending between the leading and trailing ends and first and second sides, the upper and lower surfaces facing away from one another, the upper surface having a first pair of parallel linear grooves and the lower surface having a second pair of parallel linear grooves, the first and second pairs of linear grooves extending from the leading end to the trailing end and being engagable by an intervertebral spacer device insertion tool.