Medical Device Mottled Surface for Puncture and Antibacterial Performance
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Solution Overview
Problem
Medical devices inserted into a living body require both excellent puncture properties and antibacterial properties, which existing technologies have not adequately addressed.
Innovation Solution
A medical device with a mottled structure containing silicone and an antibacterial agent on its surface, where the silicone is crosslinked and the antibacterial agent is fat-soluble or water-soluble, forming a convex and concave pattern that enhances both sliding and antibacterial properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the surface is coated with silicone to improve puncture property, then sliding property is improved, but antibacterial property is not sufficient
Solution Approach 1:
The patent applies composite materials by combining silicone and antibacterial agents in a layered surface structure. The silicone layer provides sliding property for puncture, while the antibacterial agent layer (containing substances like chlorhexidine or silver ions) provides antibacterial protection, thus resolving the contradiction between ease of operation and reliability
Solution Approach 2:
The patent implements local quality by creating a layered surface structure where different regions have different functions: the silicone layer specifically addresses sliding property at the puncture interface, while the antibacterial agent layer specifically addresses contamination prevention at the surface, allowing each material to optimize its local function without compromising the other
2Ease of manufacture
If a single material is used on the surface, then manufacturing is simple, but both puncture and antibacterial properties cannot be simultaneously optimized
Solution Approach 1:
The patent applies preliminary action by forming the silicone layer first as a base coating, then subsequently applying the antibacterial agent layer. This sequential approach allows each layer to be optimized independently while maintaining manufacturing simplicity, achieving dual functionality without excessive complexity
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 mottled structure provides excellent puncture and antibacterial properties, making the device suitable for applications requiring both, such as catheters and indwelling needles.
Implementation Method 1
a medical device whose surface is treated with silicone in order to impart lubricity and reduce friction
Implementation Method 2
the silicone is crosslinked
Data Source
AI summary
A medical device includes a mottled structure containing silicone and an antibacterial agent at a surface of the medical device.