Bone Segment Translation Fixation for Endosteal Nutrient Flow
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Solution Overview
Problem
Existing devices and systems for bone segment translation fail to effectively deliver nutrients through the endosteal cavity of bones, which is crucial for treating diabetic foot ulcers and promoting healing.
Innovation Solution
A bone segment translation system comprising an external fixation device with a pin block and movable blocks, pins, and adjustment elements that allow transverse movement of bone segments, enhancing nutrient delivery via the medullary canal and marrow sinusoids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If translational movement of a bone segment is performed to promote healing of diabetic foot ulcers, then neovascularization and perfusion of the foot are improved, but nutrient delivery through the endosteal cavity is insufficient
Solution Approach 1:
The system employs a movable block that can translate along a translation rod, dynamically adjusting the position of the bone segment. This dynamic movement creates pumping action that enhances nutrient delivery through the endosteal cavity while maintaining the healing benefits of translational movement.
Solution Approach 2:
The external fixation device acts as an intermediary mechanism between the bone segment and the nutrient delivery system. By incorporating the movable block and translation rod, the device mediates the transmission of mechanical force to enhance endosteal cavity perfusion without directly interfering with the bone healing process.
2Ease of operation
If an external fixation device is used to translate bone segments, then transverse movement is achieved, but the system complexity increases
Solution Approach 1:
The fixation device is segmented into distinct functional components: a fixed block attached to the external fixation element, a movable block coupled to the bone segment, and a translation rod connecting them. This segmentation allows each component to perform its specific function while simplifying the overall design and assembly.
Solution Approach 2:
The translation rod serves multiple functions: it guides the transverse movement of the bone segment, provides structural support for the external fixation device, and acts as a track for the movable block. This multi-functionality reduces the need for additional components, thereby simplifying the overall device structure.
Data Source
AI summary
A bone segment translation system comprises an external fixation element comprising a pin block, a first block fixed to the external fixation element, a second block movably coupled to the first block, a first plurality of pins coupled to the pin block, and a second plurality of pins coupled to the second block.