Compression Reduction Driver for Simultaneous Bone Fixation
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Solution Overview
Problem
Surgeons face challenges in achieving adequate compression across bone gaps during surgical procedures due to difficulties in maintaining reduction of bones while inserting fixation devices, such as compression screws, which require precise alignment and force application.
Innovation Solution
A compression/reduction driver with a handle, drive shaft, spring retaining sleeve, and compression sleeve, where the handle is rotatable to apply a rotational driving force and the spring biases the compression sleeve to apply a force independently of the fixation device, facilitating simultaneous reduction and fixation across bone segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixation device is inserted to stabilize bone segments, then bone stabilization is achieved, but adequate compression across the bone gap becomes difficult to achieve
Solution Approach 1:
The patent combines the reduction function and fixation device insertion function into a single integrated driver system. The driver simultaneously applies compression force to the bone segments while driving the fixation device through both bones, merging two separate functions into one unified tool that resolves the contradiction between stabilization and compression.
Solution Approach 2:
The driver acts as an intermediary tool between the surgeon and the bone segments. It provides mechanical advantage through its lever arm and rotational mechanism, enabling the surgeon to apply sufficient compression force across the bone gap while simultaneously inserting the fixation device, which would be difficult to achieve with direct manual manipulation alone.
2Force
If compression force is applied to achieve adequate compression across the bone gap, then compression is improved, but maintaining reduction of the bone segments becomes difficult
Solution Approach 1:
The driver merges the reduction function and compression function into a single integrated system. The compression sleeve applies reduction force to the bone segments while the drive shaft simultaneously inserts the fixation device, maintaining stable reduction throughout the compression process rather than requiring separate操作步骤.
Solution Approach 2:
The driver design allows the compression force application and fixation device insertion to support each other. As the fixation device is driven through the bones, it inherently helps maintain the reduced position of the bone segments, while the compression sleeve ensures adequate compression force is applied, creating a self-reinforcing system that maintains reduction stability.
3Ease of operation
If separate tools are used for reduction and fixation device insertion, then each function can be performed independently, but the surgical procedure becomes more complex and time-consuming
Solution Approach 1:
The patent merges multiple surgical functions into a single integrated driver tool. The compression sleeve, drive shaft, and fixation device engagement features are combined in one instrument, allowing the surgeon to perform reduction, apply compression, and insert the fixation device simultaneously, thereby reducing procedural complexity and time while maintaining independent controllability of each function through the unified design.
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
The device allows for independent reduction assistance and efficient insertion of fixation devices, simplifying bone alignment and stabilization during procedures like arthrodesis and fracture fixation by providing force and torque independently of the fixation device, thereby enhancing surgical precision and effectiveness.
Implementation Method 1
a spring extending between a first bearing surface of the spring retaining sleeve and a second bearing surface of the compression sleeve. The spring is configured to apply a biasing force to bias the compression sleeve distally in a direction away from the spring retaining sleeve.
Data Source
AI summary
Compression/reduction drivers are provided for performing surgical methods. Exemplary surgical methods that may be performed using the compression/reduction drivers described herein include, but are not limited to, arthrodesis procedures (i.e., bone fusion procedures), fracture fixation procedures, etc. The compression/reduction drivers are configured to simultaneously and independently apply a force against a bone segment and drive a fixation device into the bone segment.