Elastomer Composite for Medical Plugs with Heat Resistance
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Solution Overview
Problem
Existing elastomer composites for medical vessel plugs lack comprehensive properties such as heat resistance, anti-leakage, and needle retaining capabilities, restricting their usage conditions.
Innovation Solution
An elastomer composite comprising specific ratios of block copolymers, a propylene polymer, a softener, and an aromatic polymer, optimized for heat resistance, anti-leakage, and needle retaining properties, which can be molded using conventional methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional elastomer composites are used for medical vessel plugs, then manufacturing simplicity is maintained, but heat resistance, anti-leakage, and needle retaining properties are insufficient
Solution Approach 1:
The patent applies composite materials by combining multiple specific components (block copolymer A, block copolymer P, softener B, propylene polymer C, and aromatic polymer D) in defined ratios to create an elastomer composition that achieves superior heat resistance, anti-leakage, and needle retaining properties. This multi-component composite system resolves the contradiction by integrating various material functions to simultaneously improve reliability while managing composition complexity through structured formulation.
Solution Approach 2:
The patent employs parameter changes by precisely controlling the ratios of each component (block copolymer A: 10-90 parts, block copolymer P: 90-10 parts, softener B: 100-300 parts, propylene polymer C: 1-50 parts, aromatic polymer D: 1-50 parts) and specifying molecular weight ranges and viscosity parameters. This systematic parameter optimization enables the composition to achieve excellent heat resistance and other required properties while maintaining manufacturability through defined formulation parameters.
2Reliability
If conventional elastomer composites are used for medical vessel plugs, then ease of manufacture is maintained, but anti-leakage and needle retaining properties are insufficient
Solution Approach 1:
The patent uses composite materials combining block copolymer A, block copolymer P, softener B, propylene polymer C, and aromatic polymer D in specific ratios to achieve superior anti-leakage properties. The synergistic interaction between these components creates a material that effectively prevents leakage while maintaining ease of manufacture through conventional molding processes.
Solution Approach 2:
The patent optimizes anti-leakage properties by controlling specific parameters including the ratio of block copolymers (10-90 parts A, 90-10 parts P), softener viscosity (50-500 cSt at 40°C), and molecular weights. These parameter specifications enable the composition to achieve excellent anti-leakage performance while remaining manufacturable using standard industrial processes.
3Reliability
If conventional elastomer composites are used for medical vessel plugs, then ease of manufacture is maintained, but needle retaining property is insufficient
Solution Approach 1:
The patent applies composite materials with specific component combinations (block copolymer A, block copolymer P, softener B, propylene polymer C, aromatic polymer D) to achieve superior needle retaining properties. The multi-component system provides the necessary mechanical strength and elasticity to retain needles securely while allowing easy insertion and removal, resolving the contradiction between reliability and composition complexity.
Solution Approach 2:
The patent improves needle retaining property by optimizing parameters including the ratio of block copolymers (10-90 parts A, 90-10 parts P), softener viscosity (50-500 cSt), and molecular weight ranges. These controlled parameters enable the elastomer composition to achieve the precise mechanical properties needed for effective needle retention while maintaining ease of manufacture through conventional processes.
Data Source
AI summary
The object of the present invention is to provide an elastomer composite creating a molded article having excellent heat resistance, anti-leakage and needle retaining properties. To attain the object, the present invention provides an elastomer composite comprising 100 parts by mass of a block copolymer mixture containing 10 to 90 parts by mass of a block copolymer A, and 90 to 10 parts by mass of a block copolymer P, with the total amount of said block copolymers A and P being 100 parts by mass, 100 to 300 parts by mass of a softener B, having a kinetic viscosity in the range of between 50 and 500 centistokes (cSt) at 40° C., 1 to 50 parts by mass of a propylene polymer C, having a modulus in bending in the range of between 1000 and 3000 MPa, and 1 to 50 parts by mass of an aromatic polymer D.