Angled Trajectory Guide Reducing Brain Trauma
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Solution Overview
Problem
The limited diameter of burr holes in neurosurgery restricts the size and location of accessible target areas, and current trajectory guide systems often cause trauma to the brain due to multiple parallel tracks, necessitating improved access and reduced trauma solutions.
Innovation Solution
The development of trajectory guide systems with angled lumens and adjustable configurations that allow for more focused and extended access to target areas within the brain, utilizing a base with a rotatable and tiltable instrument guide that can be adjusted in height and orientation to intersect at a single cortical entry point, reducing cortical damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple parallel tracks are used to access different target areas, then more target areas can be accessed, but brain trauma increases due to multiple cortical entry points
Solution Approach 1:
The patent transitions from multiple parallel entry points (2D plane) to a single entry point with angled trajectories (3D space). By introducing angular dimensionality, instruments can reach different target areas through one cortical entry point, thereby reducing brain trauma while maintaining access versatility.
Solution Approach 2:
The patent merges multiple instrument trajectories into a single cortical entry point. Instead of creating separate parallel tracks for different targets, the system combines access pathways so that multiple instruments can enter through one point and diverge at depth, reducing the number of cortical penetration sites.
2Object-affected harmful factors
If smaller burr holes are used to reduce trauma, then brain damage is minimized, but access to target areas is restricted
Solution Approach 1:
The patent uses angular dimensionality to overcome the size limitation of the burr hole. By allowing instruments to enter at different angles through a single small opening, the system achieves access to multiple target areas without needing to enlarge the burr hole, thus minimizing cortical damage while maintaining versatility.
3Object-affected harmful factors
If angled lumens are used to access more target areas through a single entry point, then brain trauma is reduced, but device complexity increases
Solution Approach 1:
The trajectory guide is segmented into multiple lumens with different angular orientations within a single guide structure. This segmentation allows each lumen to provide a specific angled pathway while maintaining the overall integrity and manageability of the guide device, balancing complexity with functionality.
4Object-affected harmful factors
If a single cortical entry point is used with angled trajectories, then the number of parallel tracks is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent merges multiple precision-angle requirements into a single integrated trajectory guide structure. By combining all angled lumens into one guide that enters through a single cortical point, the system consolidates manufacturing precision requirements, making them more manageable than creating multiple separate parallel tracks with各自的精度要求.
Data Source
AI summary
This document discusses trajectory guides that include an instrument guide with at least one lumen angled with respect to an orthogonal or other through-axis. In one example, patterned lumens on the instrument guide provide a mirror image pattern of trajectory axes intersecting a target plane. In another example, height adjustment of the instrument guide extends these or other targeting techniques to a three-dimensional volume. This document also describes a method of manufacturing such an instrument guide, which is also applicable to manufacturing an instrument guide providing parallel lumens.