Bone Anchor Insertion Device with Retractable Stylet
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Solution Overview
Problem
Current spinal surgery tools lack efficiency in reducing operation time and providing optimal tactile feedback and control during bone anchor insertion, leading to prolonged recovery and increased trauma to the spine.
Innovation Solution
A bone anchor insertion device comprising a proximal section, a distal section, a driver, and a retractable stylet, where the stylet resides in a channel extending through both sections, allowing for controlled depth and directionality without rotation, and featuring a handle with a ratcheting mechanism for intuitive operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional spinal surgery tools are used for bone anchor insertion, then the surgical procedure can be completed, but the operation time is prolonged and tactile feedback is insufficient
Solution Approach 1:
The patent combines multiple functions (guide wire placement, bone anchor insertion, and depth control) into a single integrated insertion device. The device integrates a stylet within a cannulated structure, allowing the surgeon to perform multiple steps through one tool rather than switching between separate instruments, thereby reducing operation time while maintaining tactile feedback through the unified device structure.
Solution Approach 2:
The insertion device is designed as a multi-functional tool that can place guide wires, insert bone anchors, and control insertion depth all through a single instrument. The handle portion provides tactile feedback while the cannulated shaft with integrated stylet performs multiple surgical functions, eliminating the need for multiple specialized tools and streamlining the surgical workflow.
2Ease of operation
If multiple separate tools are used for bone anchor insertion, then each function can be performed precisely, but the surgical workflow becomes complex and time-consuming
Solution Approach 1:
The patent merges multiple separate surgical tools into one integrated device. The insertion device combines the functions of a guide wire placer, bone anchor inserter, and depth control mechanism into a single tool, reducing the number of instrument changes and simplifying the surgical workflow while maintaining functional precision.
Solution Approach 2:
The device is designed as a universal tool that performs multiple surgical functions through its integrated structure. The handle, cannulated shaft, and stylet work together to provide guide wire placement, bone anchor insertion, and depth control capabilities in one instrument, eliminating the need for multiple specialized tools and reducing surgical complexity.
3Measurement precision
If a retractable stylet is used within a channel, then depth control and directionality are improved, but the device structure becomes more complex
Solution Approach 1:
The patent implements a nested structure where the stylet is housed within the cannulated shaft. The stylet can be retracted and extended along the channel formed by the cannulated shaft, allowing precise depth control and directional guidance. This nested arrangement provides measurement precision through the controlled movement of the stylet within the channel while keeping the overall device structure integrated and manageable.
Data Source
AI summary
A bone anchor insertion device for delivering one or more bone anchor components into bone is provided. The insertion device improves surgical control in bone anchor location, placement and insertion into target bone. The bone anchor insertion device also improves efficiency in placing the bone anchor. The surgical instrument provides improved control of stylet location and orientation, including directional control for precise bone anchor component insertion. Methods to use the bone anchor insertion device in surgical procedures are also provided.