Bone Screw Targeting Guide for Accurate K-Wire Trajectory

The patent introduces a targeting guide as an intermediary instrument between the surgeon and the K-wire drilling process. This guide includes a body with a curved section that receives the metatarsal head, a targeting portion with targeting holes that define the desired K-wire trajectory, and a fulcrum that provides stable positioning. The targeting guide serves as a mediator to translate the surgical goal into precise mechanical guidance, solving the difficulty of directly achieving accurate K-wire trajectories without such an intermediary tool.

The targeting guide is positioned and secured to the metatarsal bone before the actual K-wire drilling begins. The guide is pre-aligned using the curved section that receives the metatarsal head, and the targeting holes are pre-configured to indicate the exact trajectory needed. This preliminary setup ensures that when drilling starts, the correct trajectory is already established, eliminating the difficulty of setting the desired trajectory during the procedure.

The targeting guide incorporates a curved section with a radius of curvature that allows the targeting portion to be positioned at multiple locations along the curve. The fulcrum can be adjusted to different positions on the curved section, enabling the guide to adapt to various metatarsal head positions and orientations. This dynamic positioning capability maintains trajectory accuracy while providing versatility for different surgical scenarios.

The targeting guide is divided into distinct functional segments: the curved section for receiving and positioning the metatarsal head, the targeting portion with targeting holes for defining trajectory, and the fulcrum for stable support. This segmentation allows each component to independently perform its function while collectively providing both precision and adaptability. The curved section can accommodate different metatarsal positions, while the targeting portion maintains accurate trajectory guidance.