Medical Instrument Angle Adjustment Device with Traction Wires
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Solution Overview
Problem
Conventional medical instruments struggle to maintain a stable guidewire angle when navigating corners in human ducts, leading to increased surgical risks and potential failure.
Innovation Solution
A medical instrument with an angle adjustment device, featuring a guidewire output portion with multiple traction wires that allow for adjustable angles in multiple directions, and a rotary casing for 360-degree rotation, ensuring secure fixation and flexible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional implant is used without angle adjustment capability, then the device structure is simple, but the implant cannot navigate corners in human ducts leading to surgery failure
Solution Approach 1:
The guidewire is divided into multiple segments with independent angle adjustment capabilities. Each segment can be controlled by separate traction wires to achieve multi-directional bending, enabling the guidewire to navigate complex anatomical corners while maintaining manageable structural complexity through modular design
Solution Approach 2:
The guidewire incorporates dynamic angle adjustment mechanisms that allow real-time modification of the guidewire's bending angle during the procedure. Multiple traction wires can be independently adjusted to change the guidewire configuration adaptively, transforming a static structure into a dynamic one capable of navigating various corner angles
2Reliability
If a single-direction angle adjustment mechanism is used, then the device structure is simple, but the guidewire angle cannot be fixed adequately after adjustment
Solution Approach 1:
The angle adjustment mechanism incorporates localized locking features at specific positions along the guidewire. Each segment has its own locking mechanism that can independently fix the bending angle of that segment, providing reliable angle fixation without requiring a complex global locking system
Solution Approach 2:
The mechanism includes feedback elements that provide tactile or visual confirmation when the guidewire angle is properly adjusted and locked. This feedback ensures the operator knows the angle is securely fixed, enhancing reliability without significantly increasing device complexity
3Adaptability or versatility
If multiple traction wires are added for multi-directional control, then the guidewire can be controlled in multiple directions, but the device complexity increases
Solution Approach 1:
Multiple traction wires are designed with universal control features, where each wire can potentially control different segments of the guidewire depending on the procedure requirements. The control mechanism is designed to handle multiple wires through a unified interface, reducing the operational complexity despite having multiple physical components
Solution Approach 2:
The multiple traction wires and their control mechanisms are arranged in a nested or hierarchical structure, where smaller control elements are integrated within larger control assemblies. This nesting reduces the overall spatial footprint and organizational complexity of having multiple independent control systems
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 solution enables precise control of guidewire angles in multiple directions, allowing for successful navigation through complex anatomical structures while minimizing surgical risks and ensuring effective interventional therapy.
Implementation Method 1
One end of each traction wire is connected to a proximal end of the guidewire output portion, and the other end of the traction wire is connected to a bending control member of the adjustment control portion. The adjustment control portion controls a bending angle of the guidewire output portion through the traction wire
Data Source
AI summary
The invention provides a medical instrument with angle adjustment device, including a guidewire output portion, a guidewire guide portion, an adjustment control portion and traction wires. The guidewire output portion is bendable relative to the guidewire guide portion. The guidewire output portion is provided with a guidewire output hole. One end of each traction wire is connected to a proximal end of the guidewire output portion, and the other end of the traction wire is connected to a bending control member of the adjustment control portion. The adjustment control portion controls a bending angle of the guidewire output portion through the traction wire. The ends of the plurality of traction wires are evenly distributed along the guidewire output portion. The positions and quantity of traction wires are set to enable a medical instrument having a distal end with an adjustable bending degree to adjust angles in various directions as required.