Pivotable Blade Drill for Vertebral Cavity Creation
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Solution Overview
Problem
Current methods for treating vertebral compression fractures, such as vertebroplasty, face challenges in containing bone cement within the fracture site due to leakage risks and require multiple access points for symmetrical distribution, increasing procedure time and risk.
Innovation Solution
A method and device for creating a curvilinear cavity in the vertebral body using a combined drill and reaming device with a pivotable blade, allowing for simultaneous rotation and translation to form a void that can be filled with bone cement from a single access point, ensuring symmetrical stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple access points are used for symmetrical distribution of bone cement, then the stabilization effectiveness is improved, but the procedure time and surgical risk increase
Solution Approach 1:
The device segments the cavity creation process into multiple blade elements that can be deployed sequentially or simultaneously within a single access point, enabling symmetrical bone cement distribution without requiring multiple surgical incisions
Solution Approach 2:
The invention transitions from a single-axis drilling approach to a multi-dimensional cavity formation using pivotable blades that can rotate and extend in multiple directions, achieving symmetrical stabilization from a single access point
2Strength
If multiple access points are used for symmetrical distribution of bone cement, then the stabilization effectiveness is improved, but the surgical risk increases
Solution Approach 1:
The device merges multiple cavity-creating functions into a single integrated instrument that can form multiple cavities or a complex cavity structure from one access point, reducing the number of surgical incisions and associated risks
Solution Approach 2:
The pivotable blade mechanism adds rotational and lateral dimensions to the cavity formation process, enabling symmetrical bone cement distribution throughout the vertebral body without requiring multiple access points
3Device complexity
If traditional drilling methods are used to create cavities, then the device complexity is reduced, but the manufacturing precision and symmetrical distribution capability deteriorate
Solution Approach 1:
The blade assembly incorporates dynamic elements including pivotable connections and extendable components that allow the device to adapt its configuration during operation, improving cavity formation precision while maintaining reasonable device complexity
Solution Approach 2:
The device segments the cavity formation function into multiple blade elements that can be independently positioned and controlled, enabling precise cavity creation for symmetrical bone cement distribution
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
Enables complete stabilization of the vertebral body from a single surgical access point, reducing procedure time, risk, and cement leakage, while allowing for efficient distribution of bone cement.
Implementation Method 1
a combined drill and reaming device with a pivotable blade, allowing for simultaneous rotation and translation to form a void
Data Source
AI summary
The invention relates to devices and methods for creating a curvilinear cavity within a vertebral body or other body structure. An example method of forming a void in bony structure includes accessing a bony structure with a cannula, inserting a distal end of a combined drill and reaming device through the cannula and into the bony structure, manipulating the distal end of the combined drill and reaming device to create a void in the bony structure, and removing the distal end of the combined drill and reaming device from the cannula.