Germ-Repellent Plastic for Respiratory Devices via Comingling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Medical breathing devices, such as breathing tubes, face challenges with bacterial and microbial contamination due to the limitations of existing germ-repellent plastics, which often require a matching base polymer backbone, reducing design flexibility and increasing costs, and may experience leaching of anti-bacterial materials, posing health risks.
Innovation Solution
A germ-repellent plastic is developed by comingling an anti-biofouling compound, such as poly(ethylene glycol) sorbitan monolaurate, with a basic plastic like a blend of low-density polyethylene and ethyl vinyl acetate copolymer, ensuring permanent integration and reduced leaching, thereby enhancing germ-repellency and design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-bacterial materials are embedded into or coated on plastic to create germ-repellent surfaces, then bacterial adhesion is reduced, but the materials may leach out over time posing health risks
Solution Approach 1:
The patent merges the anti-biofouling compound with the basic plastic through comingling, creating a unified material structure where the anti-biofouling compound is integrated throughout the plastic matrix rather than merely coated on the surface. This combining approach ensures the anti-biofouling compound remains permanently embedded and cannot leach out, while maintaining effective germ-repellency.
Solution Approach 2:
The patent creates a composite material by comingling the anti-biofouling compound with the basic plastic, resulting in a plastic composition that combines the structural properties of the plastic with the germ-repellent properties of the anti-biofouling compound. This composite structure ensures permanent integration and eliminates leaching while maintaining the desired functional properties.
2Reliability
If existing germ-repellent plastics require a matching base polymer backbone, then the anti-biofouling compound is effectively integrated, but design flexibility is reduced and costs increase
Solution Approach 1:
The patent applies universality by demonstrating that the anti-biofouling compound can be effectively comingled with various basic plastics regardless of their specific polymer backbone structure. This universal approach allows the same anti-biofouling compound to be integrated into different plastic types (e.g., polyolefin elastomers, polyvinylidene fluoride, polyethylene terephthalate), providing design flexibility and reducing costs by eliminating the need for matching polymer backbones.
3Ease of manufacture
If anti-biofouling compound is merely coated on plastic surface, then application is simple, but the coating easily leaches out of the basic plastic
Solution Approach 1:
The patent merges the anti-biofouling compound with the basic plastic through comingling, creating a unified material structure where the anti-biofouling compound is distributed throughout the plastic matrix rather than merely coated on the surface. This combining approach ensures the anti-biofouling compound remains permanently embedded and cannot leach out, while maintaining effective germ-repellency.
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 solution provides long-lasting germ-repellency, significantly reducing bacterial adhesion and biofilm formation, while offering greater design flexibility and cost savings by eliminating the need for a masterbatch with a matching polymer backbone, thus enhancing the safety and efficiency of medical breathing devices.
Implementation Method 1
The anti-biofouling compound may, for example, reduce the chance of adhesion of a germ, such as a microbe or bacteria, to the basic plastic
Data Source
AI summary
A germ-repellent plastic for use in a gas pathway of a respiratory device contains an anti-biofouling compound, and a basic plastic. The anti-biofouling compound is optionally selected from the group of a polyol, a polyether polyol, a polyol derivative, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of a polyether, a poly(ethylene glycol) ether, a polysorbate, and a combination thereof; or the anti-biofouling compound is selected from the group consisting of poly(ethylene glycol) sorbitan monolaurate, poly(ethylene glycol) sorbitan monooleate, poly(ethylene glycol) sorbitol hexaoleate, ceteareth, and a combination thereof. The basic plastic is selected from the group of a blend of a low-density polyethylene polymer and an ethyl vinyl acetate copolymer, a blend of a polypropylene polymer and an ethyl vinyl acetate copolymer, a blend of polyolefin elastomer polymers and a polyvinyl chloride polymer. A method for manufacturing such a germ-repellent plastic, a gas pathway component of a respiratory device containing the germ-repellent plastic, and a respiratory device are also described.