Medical Tubular Element With Multi-Angle Tip for Damage Resistance
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Solution Overview
Problem
Existing tubular medical devices, such as percutaneous cannulas and catheters, face issues with fragile tips that risk damage and detachment from calcified tissues, and lack of visibility during use, complicating their insertion and extraction in body cavities.
Innovation Solution
A tubular element with a distal end and intermediate portion featuring two distinct operating angles and a detectable marker, ensuring stability and ease of use, while incorporating multiple layers for enhanced mechanical properties and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the distal end has a single pointed angle to facilitate insertion and detachment of components, then ease of operation is improved, but reliability deteriorates due to fragility and risk of damage
Solution Approach 1:
The distal end is segmented into multiple portions (first distal portion with first angle, second distal portion with second angle) that have different geometric characteristics. This segmentation allows each portion to perform its specific function optimally while the combination provides overall structural reliability.
Solution Approach 2:
Different local regions of the distal end have different geometric qualities - the first distal portion has a sharper angle for insertion and detachment, while the second distal portion has a different angle for stability. This local differentiation resolves the contradiction between ease of operation and reliability.
2Ease of operation
If the distal end has a pointed configuration to facilitate insertion, then ease of operation is improved, but strength deteriorates due to the hardness of structures operated on
Solution Approach 1:
The distal end is divided into multiple segments with different angles, where the first segment provides the sharp point for insertion and the second segment provides structural reinforcement, resolving the contradiction between ease of insertion and strength.
Solution Approach 2:
The distal end combines different geometric configurations (different angles) in a composite structure that integrates the benefits of sharp insertion capability with enhanced strength and damage resistance.
3Device complexity
If the tubular element has a simple single-angle tip design, then device complexity is reduced, but adaptability deteriorates for different insertion scenarios
Solution Approach 1:
The tip is segmented into multiple portions with different angles, providing adaptability for various insertion scenarios and tissue types while maintaining a relatively simple overall structure that does not significantly increase device complexity.
Solution Approach 2:
The multi-angle distal end provides universal applicability for different medical procedures and insertion scenarios, making the device versatile without requiring multiple separate devices.
Data Source
Figure 1
Figure 2A~3A
Figure 2B~3B
AI summary
Described is a tubular element for medical use having a main body (2), a distal end (3) and an intermediate portion (4). The main body (2) extends along a main axis of extension (X). The distal end (3) has a front edge inclined relative to the main axis of extension (X) in such a way as to form a first operating angle (α). The intermediate portion (4) is configured to join the distal end (3) to the main body (2) and has a front edge inclined with respect to the main axis of extension (X) in such a way as to form a second operating angle (β) which is different from the first operating angle (α). [Fig. 1]