Percutaneous Port Wire Coil Tissue Integration
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Solution Overview
Problem
Conventional percutaneous ports exhibit poor tissue integration, leading to increased risks of infection and inadvertent removal due to inadequate penetration into surrounding tissue.
Innovation Solution
A percutaneous port design featuring a tubular structure with a plated outer surface and chemically reactive coil material, where the coil is joined to the tubular structure through brazing, forming a spiral configuration with varying loop diameters and orientations to enhance tissue integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional percutaneous ports are used, then the device structure is simple and easy to manufacture, but tissue integration is poor leading to infection and inadvertent removal
Solution Approach 1:
The port device is segmented into multiple functional components: a base port structure and separate coil elements that can be independently manufactured and then assembled. The coils are formed from wire and shaped into specific configurations before being attached to the port body, allowing each component to be optimized separately for manufacturing ease and tissue integration performance.
Solution Approach 2:
The invention employs composite construction by combining the port body material with coil materials that have different properties. The coils are made from materials such as shape memory alloys or superelastic materials that provide enhanced mechanical interlocking with tissue, while the port body maintains its original material properties for fluid access and sealing functions.
2Strength
If coils are added to the percutaneous port, then tissue penetration and mechanical integration are improved, but manufacturing complexity increases
Solution Approach 1:
The coils are pre-formed into their final configurations using wire shaping techniques before being attached to the port body. This preliminary formation allows for precise control of coil geometry and dimensions, ensuring optimal mechanical interlocking capability while separating the complex coil formation process from the port assembly manufacturing process.
Solution Approach 2:
An intermediary attachment process is introduced between the port body and coils, using connection mechanisms such as adhesives, mechanical fasteners, or interference fits. This intermediary step allows the coils to be securely attached to the port while maintaining the ability to manufacture each component separately using standard processes.
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 design promotes robust and long-lasting tissue growth around the port, reducing the risk of removal and infection by providing deeper penetration and stronger mechanical integration with the surrounding tissue.
Implementation Method 1
a coil comprising: a coil material that is chemically reactive with the plated material
Implementation Method 2
the joining comprises brazing at least a portion of the outer surface of the coil to the outer surface of the tubular structure
Data Source
Figure 1A~1B
Figure 1C
Figure 2A~2C
AI summary
The various implementations described herein include a percutaneous port for promoting tissue in-growth around the percutaneous port. In one aspect, the percutaneous port includes a tubular structure having an outer surface, and a coil having an outer surface and comprised of a plurality of loops. Furthermore, at least a portion of the outer surface of the coil is joined to the outer surface of the tubular structure.