Torque-Driven Guide Wire With Locking Mechanism for Endoscopic Debridement
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Solution Overview
Problem
Current medical technologies lack an efficient and precise method for removing stenosis, scarring, or masses from lumens or ducts within the body without requiring additional suction devices or drilling tools, especially during endoscopic or percutaneous procedures.
Innovation Solution
A system comprising a guide wire and a cutting assembly with a locking mechanism, where the guide wire is inserted into an endoscope's working channel and the cutting assembly is maneuvered along it, utilizing torque from a motor to rotate the cutting tool for material removal, eliminating the need for separate suction or drilling devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional surgical tools are used for material removal, then additional suction devices or drilling tools are required, but this increases device complexity and procedural difficulty
Solution Approach 1:
The patent combines multiple functions (cutting, material removal, and suction) into a single integrated guide wire system. The cutting tool is coupled to the guide wire, and the lumen is suctioned through the same guide wire structure, eliminating the need for separate suction devices and drilling tools, thus reducing device complexity while maintaining ease of operation
Solution Approach 2:
The guide wire is designed to perform multiple functions: it serves as a navigation tool, a cutting tool carrier, and a suction channel. This multi-functional design allows a single device to replace multiple traditional surgical tools, simplifying the overall system while improving operational efficiency
2Productivity
If torque is applied to rotate the cutting tool, then material removal efficiency is improved, but torque transmission through flexible structures may cause loss of control
Solution Approach 1:
The guide wire and cutting tool assembly utilizes flexible structures that can transmit torque from the proximal end to the distal cutting tool. The flexibility allows the tool to navigate curved paths while the torque transmission enables effective material removal, with the flexible structure designed to maintain sufficient control precision
3Power
If a locking mechanism is used to couple the cutting assembly with the guide wire, then torque transmission is improved, but the device structure becomes more complex
Solution Approach 1:
The locking mechanism is designed to automatically engage and disengage based on the operational state. During torque application, the mechanism self-locks to ensure efficient power transmission, and during retraction or repositioning, it self-releases, eliminating the need for additional control mechanisms and reducing overall device complexity
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 precise and efficient removal of materials from lumens or ducts, such as bile ducts, without causing damage, allowing for the retrieval of debrided samples without additional equipment, and can be used in various body parts like the gastrointestinal tract, bronchoscopes, or other hollow organs.
Implementation Method 1
receive torque provided by a motor coupled to the proximal wire end to rotate the cutting tool
Data Source
AI summary
Systems and methods for removing a material from a lumen or duct include a guide wire to navigate to the material and a cutting assembly that can then be guided along the guide wire to reach the material. A proximal wire end can be connected to a pump device configured to provide an irrigation substance along a delivery channel of the guide wire and release the irrigation substance at a distal wire end. A power source can apply a current to the guide wire to magnetize a coupling assembly disposed on the guide wire. The cutting assembly can couple to the guide wire by engaging a locking mechanism of the cutting assembly with a coupling assembly of the guide wire. The locking mechanism can receive torque provided by a motor coupled to the proximal wire end of the guide wire to rotate the cutting tool of the cutting assembly to remove the material.