Navigation Tool Holder Alignment via Segmented Spacer

The navigation tool holder is divided into multiple segments including a top holder, bottom holder, and spacer portion. This segmentation allows each component to be manufactured separately with precise dimensions, then assembled together to achieve accurate overall alignment. The spacer portion acts as a precision intermediate element that maintains correct spacing and alignment between the top and bottom holders, thereby resolving the alignment precision issue while maintaining device functionality.

The holder structure merges multiple functions into a single integrated assembly. The top holder, bottom holder, and spacer portion are designed to work together as one unit, where the spacer is integrated between the two holders to simultaneously provide spacing, alignment, and structural support. This merging approach achieves precise alignment without requiring separate complex adjustment mechanisms, thereby improving manufacturing precision while minimizing the increase in device complexity.

The spacer portion is pre-formed with precise dimensions and features that enable automatic alignment during assembly. The top and bottom holders are designed with corresponding engagement features that mate with the spacer, creating a self-aligning assembly system. This preliminary action of pre-forming precise alignment features in the spacer allows the components to automatically find their correct positions during assembly, thereby ensuring reliable alignment stability while maintaining ease of manufacture through simplified assembly procedures.