Percutaneous Extraforaminotomy Tool Set for Precise Ligament Resection
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Solution Overview
Problem
Existing surgical tools for percutaneous extraforaminotomy face difficulties in accurately positioning and maneuvering tools like a trocar and cannula due to their elongated needle shape, leading to challenges in ligament resection, increased hemorrhaging, and risks of nerve damage during procedures for treating spinal conditions.
Innovation Solution
A tool set comprising a stylet member with a probe and guide pipe, a trocar with a first handle, a cannula with a sleeve, and a curette, designed with enhanced gripping features and directional control, allowing precise targeting and minimally invasive procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional elongated needle-shaped tools (trocar, cannula) are used for percutaneous extraforaminotomy, then the tools can reach the target point, but the directional property and straightforward property are poor, making it difficult to accurately position and maneuver the tools
Solution Approach 1:
The tool set is divided into multiple functional components: stylet member (with probe and guide pipe), trocar, cannula, and curette. Each component has a specific function and can be independently manipulated, allowing for better directional control and positioning accuracy compared to a single elongated needle tool.
Solution Approach 2:
The guide pipe of the stylet member serves as an intermediary that guides the trocar to the target point. This intermediary structure provides a pathway that improves both the directional property and straightforward property, enabling accurate positioning while maintaining ease of operation.
2Reliability
If conventional tools are used for ligament resection, then the procedure can be performed, but hemorrhaging increases and nerve damage risks arise
Solution Approach 1:
The stylet member with probe is used first to identify and mark the target point before inserting the trocar. This preliminary action allows for precise positioning and avoids accidental damage to nerves and blood vessels during the resection procedure, reducing hemorrhaging and nerve damage risks.
Solution Approach 2:
The guide pipe acts as a protective intermediary that constrains the movement of the trocar, preventing it from deviating from the safe path. This reduces the risk of accidental nerve damage and hemorrhaging by ensuring the tool follows a predetermined safe trajectory.
3Productivity
If conventional tools are used, then the procedure can be completed, but surgical time is extended and multilevel extraforaminotomy is difficult to facilitate
Solution Approach 1:
The tool set is designed to be universal and adaptable for multilevel extraforaminotomy procedures. The standardized components (stylet member, trocar, cannula, curette) can be used across multiple vertebral levels, reducing the time required for setup and procedure repetition, thereby improving surgical efficiency and productivity.
Solution Approach 2:
The tool set allows for dynamic adjustment and repositioning during the procedure. The stylet member can be repeatedly inserted to identify new target points, and the trocar can be maneuvered with improved directional control, enabling efficient multilevel treatment without extending surgical time.
Data Source
AI summary
Disclosed are a tool set for percutaneous extraforaminotomy and a method of performing percutaneous extraforaminotomy using the same. The tool set includes: a stylet member including an elongated probe, a guide pipe, a cap, and a hub body; a trocar including a needle and a first handle; a cannula including a sleeve, a fixation shaft, and a handle; and a curette including a rod, a resection tip, and a second handle. According to the tool set and method, in the procedure in which the tools of the tool set percutaneously penetrate the muscle layer and reach a transforaminal ligament resection-target point of intervertebral foramen, it is possible to improve the directional property and straightforward property of the tools, and during ligament resection, it is possible to facilitate direction switching.