Gouger Grasper Device for Bone Cement Removal
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Solution Overview
Problem
The existing methods for removing bone cement during surgical procedures require switching between a chisel device and a grasper device, which is time-consuming and prone to errors due to the need for multiple tools.
Innovation Solution
A gouger grasper device with a handle, chisel, jaw, and ratcheting assembly that allows for both gouging and grasping bone cement fragments with a single tool, featuring a trigger mechanism to move the jaw between open and clamping positions, facilitating efficient removal of bone cement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two distinct tools (chisel device and grasper device) are used for bone cement removal, then the bone cement can be effectively broken and removed, but the procedural time increases and error risk increases due to tool switching
Solution Approach 1:
The patent combines a chisel device and a grasper device into a single integrated tool. The chisel portion breaks bone cement while the grasper portion simultaneously or sequentially removes fragments, eliminating the need to switch between separate tools and thereby reducing procedural time and error risk associated with tool switching
Solution Approach 2:
The integrated device performs multiple functions within a single tool structure. The chisel portion provides gouging and breaking capability while the grasper portion provides fragment removal capability, allowing one tool to replace two distinct tools and maintain reliability while reducing time loss
2Reliability
If two distinct tools are used for bone cement removal, then complete removal can be achieved, but the complexity of the procedure increases due to multiple tools
Solution Approach 1:
The patent merges the chisel device and grasper device into a single integrated instrument with unified handle and shaft structures. This reduces the number of separate devices from two to one while maintaining the complete functionality needed for bone cement removal, thereby reducing procedural complexity
3Productivity
If a single integrated device is used for both gouging and grasping, then procedural time is reduced and error risk is minimized, but the device structure becomes more complex
Solution Approach 1:
The integrated device is segmented into distinct functional portions (chisel portion and grasper portion) that can operate independently or in coordination. This segmentation allows each portion to be optimized for its specific function while being part of a unified structure, managing complexity through functional separation within integration
Solution Approach 2:
The grasper portion incorporates a movable jaw mechanism with ratcheting assembly that allows dynamic adjustment between open and clamping positions. This dynamic capability enables the grasper to adapt to different fragment sizes and positions, enhancing productivity while the mechanical ratcheting system manages the complexity of the moving parts
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 enables efficient and error-free removal of bone cement by eliminating the need for separate tools, reducing procedural time and minimizing the risk of errors during surgical procedures.
Implementation Method 1
a ratcheting assembly for moving the jaw relative to the chisel between an open position and a clamping position in response to movement of the trigger relative to the base
Implementation Method 2
a biasing member disposed between a proximal end of the inner arm and the base for biasing the trigger into an open position
Data Source
AI summary
A gouger grasper device including a handle at a proximal end of the device, the handle having a base and a trigger movably connected to the base, a chisel at a distal end of the device, a jaw at a distal end of the device and movable relative to the chisel, and a ratcheting assembly for moving the jaw relative to the chisel between an open position and a clamping position in response to movement of the trigger relative to the base.