Powered Osteotome Trepanation Tool for Guided Tight-Space Bone Removal
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Solution Overview
Problem
Existing methods for removing resected bone portions are challenging due to difficulty in accessing tight spaces and removing attached soft tissues, making it difficult to securely engage and extract the bone portions.
Innovation Solution
A surgical bone cutting system comprising a trajectory guide and osteotome with a tapered guide shaft and concave radiused cutting edges, allowing precise bone penetration and collection, optionally integrated with robotic navigation for controlled trajectory and powered drilling for efficient bone removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual tools (rongeur, curette, osteotome) are used to remove resected bone portions, then the bone can be physically engaged and extracted, but the removal becomes difficult when the bone portion is positioned in tight joint spaces or attached to tendons/ligaments
Solution Approach 1:
The powered osteotome is inserted through the osteotome channel of the trajectory guide, creating a nested configuration where the cutting tool is housed within the guidance structure. This allows the system to access tight joint spaces while maintaining precise trajectory control and bone engagement capability
Solution Approach 2:
The system merges the trajectory guide (for positioning and guidance) with the powered osteotome (for cutting and removal). This combination integrates guidance, positioning, and bone removal functions into a single coordinated system, enabling effective removal of bone portions even when attached to soft tissues or positioned in constrained spaces
2Measurement precision
If a trajectory guide with osteotome is used for precise bone penetration, then alignment and trajectory control are improved, but the device complexity increases
Solution Approach 1:
The system is divided into distinct modular components: the trajectory guide (with osteotome channel for guidance), the powered osteotome (with drill bit for cutting), and the integration interface. This segmentation allows each component to be optimized for its specific function while maintaining overall system precision and reducing complexity through modularity
Data Source
AI summary
A surgical bone cutting system includes a trajectory guide and an osteotome or trepanation tool with a generally square cutting tip that creates a corridor through bone, for example, in the context of spine, through a facet joint or other vertebral structure and to the disc space between two vertebrata for any of a variety of surgical procedures, including but not limited to disc prep and cage insertion. The osteotome fits into the trajectory guide to contact bone and effect creating a bony corridor. In some embodiments, the trajectory guide includes a cylindrical allograft collection chamber, and the trajectory guide and osteotome fit into standard tubular retractors and are agnostic with respect to receiving standard drill bits or a powered auger insertable through a center through channel.