Multifunctional Traction and Bone Fixation Device for Fracture Alignment
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Solution Overview
Problem
Current methods for treating fractured human limbs, such as traditional traction nails and open surgery with steel plates, often result in secondary injuries, inaccurate bone alignment, and the need for additional surgeries due to vibration, poor visibility, and mismatched fixation configurations, leading to potential lifelong disabilities.
Innovation Solution
A multifunctional traction and bone fixation device with adjustable and stable components, including traction clamping plates, positioning and pressurizing screws, traction handle screws, and auxiliary fixation pin holders, allowing for minimally invasive treatment by injecting traction nails into both sides of the fracture and providing adjustable auxiliary fixation, reducing the need for open surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional traction nail is injected into the human body to penetrate the bone, then the traction treatment can be applied, but massive vibration is generated causing the fractured bone to be completely displaced, resulting in secondary injuries
Solution Approach 1:
The device divides the single traditional traction nail into multiple traction nails (at least two) that are injected into different bones of the lower limb. This segmentation distributes the traction force across multiple bones, preventing the massive vibration and complete bone displacement that occurs with a single traditional traction nail.
Solution Approach 2:
The device combines multiple functions into a single integrated system: it provides traction treatment through multiple nails, enables auxiliary fixation through pin holders, and allows adjustable positioning. This multi-functionality replaces the need for separate traditional treatments while avoiding their harmful effects.
2Ease of manufacture
If a traditional traction nail penetrates only one bone, then the injection process is simple, but it is not applicable for lower limbs which include two bones, requiring injection into the heel bone which does not extend in a vertical line, thus traction effect cannot be guaranteed
Solution Approach 1:
The device uses multiple traction nails injected into different bones (such as the tibia and fibula) of the lower limb. This segmentation allows each nail to be injected into a separate bone along the vertical line, ensuring proper alignment and guaranteed traction effect while maintaining relative injection simplicity.
Solution Approach 2:
The device transitions from a single-dimensional approach (one nail in one bone) to a multi-dimensional approach by injecting multiple nails into multiple bones that are arranged vertically. This spatial arrangement in multiple dimensions ensures the traction nails extend in a vertical line, guaranteeing the traction effect.
3Reliability
If open surgery is performed with steel plate fixation, then the bones can be fixed internally, but the shape and configuration of the plate may not exactly match the natural shape of the bone, causing abnormal alignment and requiring secondary surgery
Solution Approach 1:
The device uses multiple traction nails injected into different bones that can be independently positioned and adjusted. This allows each nail to be precisely aligned with the natural anatomy of each bone, ensuring accurate alignment without requiring a standardized steel plate that may not match the specific bone geometry.
Solution Approach 2:
The device provides adjustable and stable assembly that can be adapted to different fracture displacements and bone configurations. The multiple nails and auxiliary fixation components can be dynamically adjusted to achieve precise anatomical alignment, unlike a fixed steel plate configuration.
4Ease of operation
If a screw-in traction arch is used with screws screwed into screw holes for fixation, then the design concept is good, but rotating the screw may strangle epidermis of muscles and bones, and the screw head abuts against the bone cortex causing pain and muscle tearing
Solution Approach 1:
The device extracts the harmful screwing action from the fixation system. Instead of using screws that rotate and abut against bone cortex causing muscle strangulation and pain, the device uses traction nails injected into bones and auxiliary fixation pins that provide secure fixation without the harmful mechanical actions of traditional screws.
Data Source
AI summary
A multifunctional traction and bone fixation device relates to the technical field of medical devices. Two traction clamping plates serve as a base. The front of each of the two traction clamping plates defines a traction nail. The middle portion of the clamping plate is arranged with a positioning and pressurizing screw. The rear end of the clamp plate is arranged with a traction handle screw. The clamping plate is arranged with a plurality of auxiliary fixation pin holders and auxiliary fixation pins. Heads of two traction nails are injected in opposite directions into a lower portion of a fracture site to determine a fixation position. Rear ends of the two traction clamping plates extend along the thigh direction to be weighted-pulled.