In healthcare, gas-phase silicone rubber has become a core material for implantable and non-implantable devices, thanks to its exceptional biocompatibility and chemical stability. Its key advantage lies in the purity of fumed silica (heavy metal content < 1 ppm) and its nanoscale dispersion, minimizing human rejection reactions and meeting stringent medical standards like FDA and ISO 10993.

For long-term implantable devices, gas-phase silicone rubber excels in stability. For example, sealing rings in artificial heart valve frames must function reliably for over 15 years in the human body. Traditional materials are prone to protein adsorption and calcification-induced failure, whereas gas-phase silicone rubber, modified with surface treatments (e.g., plasma processing), reduces its contact angle to below 60°, creating a hydrophilic surface that minimizes thrombus formation. With a tensile strength of 12 MPa and elongation at break exceeding 600%, it withstands dynamic stresses from heartbeats. After 3 years of immersion in simulated body fluid at 37℃, its mechanical property degradation rate remains below 3%, ensuring long-term valve reliability.

For short-term implantable devices, flexibility and breathability are critical. Catheters and drainage tubes require direct contact with soft tissues; gas-phase silicone rubber adjusts its silicone oil-to-resin ratio to achieve a hardness of 30 Shore A, closely matching human tissue stiffness and significantly reducing patient discomfort. Its breathability (moisture permeability > 2500 g/m²·24h) also prevents fluid accumulation and infection risks, widely used in wound dressings and scar patches. For instance, a brand of scar patch combines gas-phase silicone rubber with medical-grade silicone gel, continuously releasing silicone molecules to inhibit excessive collagen proliferation, improving scar flatness by 50% and withstanding repeated applications (over 50 times without residue),

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