Powered Osteotome Trepanation for Tight-Space Bone Removal
Find Innovative SolutionsGenerate Solutions
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 bone removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual tools (rongeur, curette, osteotome) are used to remove resected bone portions, then the procedure can be performed with simple equipment, but the removal becomes relatively difficult due to tight joint spaces and attached soft tissues
Solution Approach 1:
The patent replaces manual mechanical removal tools with a powered osteotome system that uses rotational cutting mechanisms. The powered instrument with cutting edges can efficiently cut through bone and attached soft tissues, substituting the manual mechanical action of rongeurs and curettes with a more effective powered cutting system that overcomes the limitations of tight joint spaces.
Solution Approach 2:
The resected bone portion is removed as a segmented or divided piece rather than as a single large piece. The powered osteotome allows for controlled cutting that can divide the bone portion into manageable segments, making extraction from tight joint spaces more feasible and less difficult.
2Device complexity
If traditional cutting edges are used on the osteotome, then the design is simpler, but the ability to penetrate and remove bone efficiently in tight spaces is reduced
Solution Approach 1:
The cutting edges of the osteotome are designed with specific local qualities - concave radiused geometry concentrated at the distal portion. This localized design feature enhances the ability to penetrate and cut bone efficiently in tight spaces, applying the principle of concentrating cutting function where it is most needed rather than using a uniform simple design throughout.
Solution Approach 2:
The cutting edges incorporate concave radiused (curved) geometry rather than straight or angular edges. This curved design allows the cutting edges to better conform to the contours of bone surfaces and tight joint spaces, improving penetration efficiency and bone removal capability while maintaining a relatively simple overall device structure.
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.