Intravascular Mesh Attachment for Atraumatic Catheter Navigation

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Solution Overview

Problem

Current intravascular catheters used for blood flow restoration or thrombus removal often break or separate during use, causing health risks due to mechanical cutting techniques that generate traumatic wire ends and difficulty in maintaining a strong attachment/connection of elements during push, pull, and torque moves.

Innovation Solution

An intravascular device with improved attachment between elements, utilizing a vascular pusher and a tool formed by a mesh of filaments with laser-cut proximal ends and a thermoplastic or adhesive connection, ensuring atraumatic and flexible attachment with an outer diameter matching the vascular pusher, preventing separation and elongation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If mechanical cutting techniques are used to cut wire ends, then the cutting process is simple and fast, but traumatic wire ends are generated causing device breakage and separation

Engineering Contradiction:

Improvecutting speedVSAvoidtraumatic wire ends

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces mechanical cutting techniques with laser cutting technology. The laser beam precisely cuts the wire ends without physical contact, eliminating mechanical stress and trauma to the wire structure. This substitution maintains high cutting speed while producing clean, precise cuts that prevent device breakage and separation during use.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If strong attachment/connection of elements is maintained during push, pull and torque moves, then device reliability is improved, but device complexity increases

Engineering Contradiction:

Improveattachment strengthVSAvoidconnection structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the attachment function into the existing catheter structure by extending the inner liner beyond the outer jacket to form an integrated distal connection portion. This unified structure eliminates the need for separate attachment mechanisms, maintaining strong connection during push, pull, and torque moves while avoiding additional complexity.

Inventive Principle:

Principle #5Merging (Combining)

3Strength

If inner liner extends beyond outer jacket to form distal connection portion, then attachment strength is improved, but device navigability through vessels is reduced

Engineering Contradiction:

Improveattachment strengthVSAvoidnavigability

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The patent applies local quality by creating a specific geometric configuration of the distal connection portion with controlled outer diameter. The connection portion has enhanced structural properties where needed for attachment strength, while maintaining a streamlined profile that matches the catheter's overall diameter for smooth navigation through vessels. This localized structural optimization allows both strong attachment and good navigability.

Inventive Principle:

Principle #3Local quality

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 improved attachment enhances navigability through vessels, avoids vessel damage, and enables safe movement of internal medical devices, reducing the risk of separation and elongation, while maintaining flexibility and concentric navigation.

Implementation Method 1

proximal connection portion that includes laser-cut proximal ends of the at least two sets of filaments

Methodology Applied

Scientific EffectLaser: Laser

Implementation Method 2

an attachment between the tool proximal connection portion and the vascular pusher distal connection portion... utilizing a vascular pusher and a tool formed by a mesh of filaments with laser-cut proximal ends and a thermoplastic or adhesive connection

Methodology Applied

Scientific EffectThermoplastic:

Data Source

PatentEP4452099B1An intravascular device with an improved attachment of its elements and a method of manufacturing thereof

Publication Date: 2025.11.12 ANACONDA BIOMED SL

Figure 1A~2A
Figure 2B~2D
Figure 2E~2G

AI summary

An intravascular device with an improved attachment of its elements is provided. The intravascular device comprises a vascular pusher comprising a distal connection portion; a tool attached to, and extending from, the distal connection portion of the vascular pusher, the tool comprising a mesh of at least two sets of filaments and comprising a proximal connection portion having laser-cut proximal ends; and an attachment between the tool proximal connection portion and the vascular pusher distal connection portion adapted to keep the tool connected to the vascular pusher, the attachment having an outer diameter substantially equal to an outer diameter of the vascular pusher. A method of manufacturing an intravascular device is also provided.