Bone-Cutting Jig System for Cadaveric Bone Segmentation
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Solution Overview
Problem
Existing cutting tools are inadequate for precision cutting of non-uniform cadaveric bone, leading to inefficiencies, errors, and safety risks due to the lack of adaptation for FDA regulations on cleaning, decontamination, and sterilization in the human-tissue processing industry.
Innovation Solution
A bone-cutting jig system with a v-shaped trough and bone-advancement wedge that allows for incremental cuts, enabling precise and standardized cutting of bone segments while maintaining user safety and accommodating FDA regulations through sterilizable components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual cutting methods are used for cadaveric bone, then flexibility in handling non-uniform bone shapes is maintained, but cutting precision and consistency deteriorate
Solution Approach 1:
A jig system acts as an intermediary device between the cutter and the bone, providing a standardized interface that ensures precise positioning and cutting paths while accommodating variations in bone shape and size. The jig includes positioning features, guides, and clamps that mediate the interaction between the cutting tool and the non-uniform bone geometry.
Solution Approach 2:
The cutting system incorporates adjustable parameters such as cutting depth, angle, and position to accommodate non-uniform bone shapes. The jig allows technicians to modify cutting parameters while maintaining precision through standardized guides and stops that prevent deviations from the intended cutting path.
2Manufacturing precision
If standardized cutting procedures are implemented, then cutting consistency improves, but adaptability to non-uniform bone shapes deteriorates
Solution Approach 1:
The jig system is designed with universal features that can accommodate various bone shapes and sizes while maintaining standardized cutting procedures. It includes adjustable clamps, multiple positioning options, and interchangeable components that allow the same jig to adapt to different anatomical variations without compromising cutting consistency.
Solution Approach 2:
The cutting process is divided into standardized segments or steps within the jig system, where each segment handles a specific aspect of the cutting operation. This segmentation allows for consistent procedures to be applied across different bone shapes while maintaining overall adaptability through the modular nature of the jig components.
3Manufacturing precision
If technicians perform precision cutting operations, then cutting quality improves, but safety risks and exposure to hazards increase
Solution Approach 1:
The hazardous cutting operation is extracted from direct technician contact through the use of guided jigs and automated positioning systems. The technician operates the system from a safer position, controlling the cutting process indirectly through the jig mechanisms rather than manually guiding the blade, thereby reducing exposure to blade hazards while maintaining cutting quality.
Solution Approach 2:
The jig system serves as a protective intermediary between the technician and the cutting blade, providing physical barriers, guided motion paths, and controlled engagement mechanisms that reduce the technician's exposure to harmful factors while enabling precision cutting operations to proceed safely.
4Productivity
If manual handling of bone segments is used, then operational simplicity is maintained, but productivity and tissue utilization efficiency deteriorate
Solution Approach 1:
Multiple functions are merged into the jig system, including positioning, clamping, guiding, and measurement capabilities in a single integrated device. This consolidation improves productivity by eliminating the need for multiple separate tools and manual operations, while the standardized design keeps the overall system complexity manageable through functional integration rather than multiplication of components.
Data Source
AI summary
There is disclosed a system and methods for safely, precisely, and efficiently cutting cadaveric bone segments into a number of dimensionally standardized pieces. One embodiment provides a jig system for use with a band saw. The jig system may include a v-shaped trough riding upon a plate and at least one rail designed to glide within a corresponding groove formed in the band saw table and stretching parallel to the blade. The trough may include a channel having a series of incremental stops extending between its proximal and distal ends. A bone-advancement wedge may be advanced proximally along the channel between the incremental stops to advance at least one bone segment within the trough toward the proximal end of the trough such that, by sliding the rail(s) within the table groove(s), a desired incremental portion of the bone segment is introduced to the blade. Other embodiments are also disclosed.