Patent ID: 11957393
Assignee: GLOBUS MEDICAL INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A variable length headless compression screw insertion system comprising:
a compression screw having a bone screw and a compression sleeve coupled to the bone screw, wherein:
the bone screw including a proximal end having an external threading threadably received in the compression sleeve, and
the compression sleeve includes a proximal end having a predefined drive feature and an external threading;

a driver assembly for driving the compression screw into a bone and including:
a sleeve coupler adapted to threadably receive the external threading of the compression sleeve;
a ram driver adapted to be coupled to the sleeve coupler and having a predetermined length such that its distal end is shaped to contact the proximal end of the bone screw to prevent translation of the bone screw relative to the compression sleeve
wherein the proximal end of the bone screw lacks a drive feature and the distal end of the ram driver has a flat surface to contact the proximal end of the bone screw to prevent translation of the bone screw, but allow rotation of the bone screw relative to the compression sleeve.