Elastic Traction Bow for Flexible Fracture Reduction
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Solution Overview
Problem
Conventional orthopedic lower limb traction systems are complex, rigid, and inconvenient for surgical operations, particularly in fracture reduction surgeries, as they lack flexibility and adjustability, making it difficult for doctors to perform precise reduction operations.
Innovation Solution
An elastic traction system with a driving mechanism, connecting rod, traction wheel, and elastic traction bow, featuring an elastic body and adjustable tensional traction bow, allowing for flexible and adjustable traction through a ratchet mechanism and motor-driven operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid traction bow is used, then the traction force is stable, but the flexibility and adaptability for surgical operations is poor
Solution Approach 1:
The patent applies the dynamics principle by replacing the rigid traction bow with an elastic traction bow that can dynamically adjust its shape and tension. The elastic body allows the traction system to adapt to different surgical requirements while maintaining stable traction force through elastic deformation.
Solution Approach 2:
The patent changes the physical state parameter of the traction bow from rigid to elastic. This parameter change enables the traction system to provide both stability through elastic force and flexibility for surgical maneuvers, resolving the contradiction between reliability and adaptability.
2Device complexity
If a manual traction frame is used, then the structure is simple, but the ease of operation and adjustability is poor
Solution Approach 1:
The patent replaces the purely manual mechanical operation system with an electrically driven traction system. The motor-driven mechanism improves ease of operation and adjustability while maintaining relative structural simplicity through automated control.
3Reliability
If a conventional traction system is used, then the device is complete, but the device complexity and space occupation are large
Solution Approach 1:
The patent applies universality by designing a compact traction system that can perform multiple functions including traction, reduction, and positioning. The integrated design reduces device complexity and space occupation while maintaining complete functional capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates precise and flexible traction operations, providing an elastic activity space for surgical maneuvers, simplifying the operation, and ensuring safety with accurate force control, while being adaptable to different operating table heights and easy to disinfect.
Implementation Method 1
an elastic body, having one end connected to the traction wire; and a tensional traction bow, having one end connected to the other end of the elastic body
Data Source
AI summary
An elastic traction system, including a driving mechanism to provide traction power, a connecting rod connected to an output shaft of the driving mechanism and rotating along with the output shaft, a traction wheel arranged at an end of the connecting rod for rotating along with the connecting rod, a traction wire connected to the traction wheel, and an elastic traction bow connected to the traction wire. An elastic body is arranged at a front end of the traction wire to be connected to various traction tools, the other end of the traction wire is wound around the traction wheel, and the traction wheel is driven by the traction system to rotate, so as to complete a traction operation. The elastic traction bow implements elastic traction of a fracture reduction surgery, provides an elastic activity space for a surgical operation, and greatly facilitates carrying out various reduction operations during traction.