Braided Intraluminal Mesh Structure for Clot Capture and Navigation

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Solution Overview

Problem

Intravascular and intraluminal medical devices face challenges in navigating tortuous vasculature while maintaining sufficient rigidity for therapeutic operations and pliability to avoid vessel damage.

Innovation Solution

An intraluminal device with a twisted and woven wire configuration, featuring a rigid operative portion and a pliable distal tip, along with an expandable mesh segment for clot capture, allowing for both therapeutic efficacy and safe delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the device is made rigid to perform therapeutic operations, then operational effectiveness is improved, but the ability to navigate tortuous vasculature deteriorates

Engineering Contradiction:

ImproverigidityVSAvoiddeliverability

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The device is divided into distinct segments with different structural properties: a proximal rigid segment for therapeutic operations and a distal pliable segment for navigation. This segmentation allows each portion to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the device are given different mechanical properties - the proximal portion is constructed with rigid wire mesh for structural support and therapeutic operations, while the distal portion uses a pliable construction with smaller wire diameters and different mesh patterns to enable navigation through tortuous vasculature.

Inventive Principle:

Principle #3Local quality

2Length of moving object

If the device diameter is reduced to fit narrow vessels, then deliverability is improved, but the ability to perform therapeutic operations deteriorates

Engineering Contradiction:

Improvedevice diameterVSAvoidoperational rigidity

Core Design Contradiction:

Length of moving objectVSStrength

Solution Approach 1:

The device transitions from a compressed low-profile state during delivery to an expanded high-rigidity state during operation. The expandable wire mesh structure allows the device to maintain small dimensions for navigation while providing sufficient structural support when deployed for therapeutic operations.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If the device is made pliable to navigate tortuous vasculature, then deliverability is improved, but the ability to perform therapeutic operations deteriorates

Engineering Contradiction:

ImprovedeliverabilityVSAvoidoperational rigidity

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

4Strength

If the wire diameter is increased to improve structural support, then operational rigidity is improved, but the ability to navigate narrow vessels deteriorates

Engineering Contradiction:

Improvestructural supportVSAvoidwire diameter

Core Design Contradiction:

StrengthVSLength of moving object

Solution Approach 1:

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12478395B2Intraluminal device with wire braiding configuration

Publication Date: 2025.11.25 RAPID MEDICAL

AI summary

Intraluminal devices and methods of fabricating intraluminal devices may be provided. In one implementation, an intraluminal device may be formed of a plurality of wires and may include a distal coil, a proximal coil, and an expandable mesh segment positioned between the distal and proximal coils. The distal coil, proximal coil, and expandable mesh segment may be formed as a single, unitary structure, with at least one wire of the plurality of wires extending continuously from the proximal coil to the distal coil.