Micro-Medical Guidewire Magnetic Tip Control for Vascular Angles

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Solution Overview

Problem

Conventional guidewires struggle with inserting into blood vessels with angled or uneven curvatures, requiring skilled practitioners and prolonged operating times, and lack precise tip end direction control.

Innovation Solution

A micro-medical robot-based guidewire with magnetic bodies inside the front end, allowing direction control via an external magnetic field system, maintaining flexibility and torqueability through spaced magnetic bodies connected by inner coils.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple guidewires with different angles are used to accommodate various blood vessel angles, then the adaptability to different blood vessel angles is improved, but the device complexity and operating time increase

Engineering Contradiction:

Improveadaptability to different blood vessel anglesVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The guidewire incorporates magnetic bodies that can dynamically change the tip end direction in response to external magnetic fields, allowing a single guidewire to adapt to various blood vessel angles rather than requiring multiple fixed-angle guidewires

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent replaces manual mechanical manipulation of the guidewire with a magnetic field-based control system, where external magnets guide the direction of the guidewire tip, eliminating the need for practitioners to physically adjust multiple guidewires

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If manual manipulation is used to adjust guidewire angle for different blood vessel angles, then the adaptability is improved, but the operating time and skill requirement increase

Engineering Contradiction:

Improveadaptability to different blood vessel anglesVSAvoidoperating time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

Manual mechanical adjustment of guidewire angles is replaced with magnetic field-based directional control, where external magnets remotely guide the guidewire tip direction, significantly reducing the time and skill required for angle adjustment

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

External magnetic fields serve as an intermediary between the practitioner's intent and the guidewire's directional change, enabling remote and precise control of the guidewire tip without direct manual manipulation

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If magnetic bodies are placed close together to enable direction control, then the direction control precision is improved, but the flexibility and torqueability deteriorate

Engineering Contradiction:

Improvedirection control precisionVSAvoidflexibility and torqueability

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent uses a flexible outer coil structure that surrounds the magnetic bodies, allowing the guidewire to maintain flexibility and torqueability while containing the magnetic bodies necessary for directional control

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The guidewire combines magnetic bodies with flexible outer coil material to create a composite structure that simultaneously provides magnetic responsiveness for precise direction control and mechanical flexibility for ease of insertion and manipulation

Inventive Principle:

Principle #40Composite materials

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 direction control of the guidewire tip, facilitating faster and easier access to lesion sites, even in complex vascular structures, while maintaining flexibility and torqueability comparable to conventional guidewires.

Implementation Method 1

A micro-medical robot-based guidewire with magnetic bodies inside the front end, allowing direction control via an external magnetic field system

Methodology Applied

Scientific EffectMagnetic field interaction: Magnetic Field

Data Source

PatentUS20250213314A1Micro-medical robot-based guidewire for vascular intervention

Publication Date: 2025.07.03 KOSWIRE CO LTD

AI summary

Disclosed is a micro-medical robot-based guidewire for vascular intervention. The guidewire includes: a core shaft; an outer coil surrounding an outer circumference of a distal portion of the core shaft; a tip end to which a front end of the core shaft and/or a front end of the outer coil is connected; an outer joining unit configured to connect a rear end of the outer coil and a rear end of the core shaft; an inner joining unit, disposed inside the outer coil, configured to connect the outer coil and an outer surface of the core shaft; and at least two magnetic bodies, disposed at a specific section in the inner space of the outer coil, wherein each of the magnetic bodies with each through-hole being formed at each center thereof is configured to allow the front end of the core shaft to go through said each through-hole.