21+ days

Adhesives used for long-term medical devices should offer a range of high-performance features: the most appropriate adhesive materials for these devices provide a continuous and secure bond, are breathable and flexible, prioritize skin health over prolonged periods, while also minimizing pain upon removal.

For devices designed for 21+ days of wear, it is vital to select adhesives and materials engineered for long-term or extended wear. Besides the adhesive material itself, the coating thickness and the substrate the adhesive is coated onto (non-woven, PU non-woven) also have an impact on the device’s adhesive performance. These components must ensure a durable bond that withstands the rigors of daily life, including extensive movement, moisture from bathing and sweating, and environmental factors, while continuously adhering securely to the skin.

For these long-term wearable devices, it is not recommended to use occlusive materials, as this will lead to moisture building up under the adhesive patch and material failure over time. To safeguard skin health over such prolonged periods, these adhesives should be hypoallergenic, and capable of allowing the skin to breathe, thereby preventing moisture buildup, skin irritation, or breakdown.

The materials chosen should also be flexible enough to conform and move with the skin, reducing the risk of discomfort or pressure points. When it comes time for removal, the process should be as pain-free as possible, minimizing the potential for skin trauma or irritation. Incorporating such carefully chosen adhesives and materials enables wearable devices to be used safely and effectively for long-term health monitoring, therapeutic interventions, or fitness tracking, ensuring user compliance and satisfaction throughout the extended wear period.