The PELSA system samples and collects dermal interstitial fluid using hollow microneedles and a mild vacuum. The needle chip has a built-in capillary system and a fluidic storage reservoir for collection of the fluid.
A strong patent portfolio shows the novelty and inventiveness of the system and forms the foundation of a robust path towards improved diagnostics. Patents range from intricate details regarding design of hollow microneedles and realization of on-chip capillary systems to sampling methods and analysis.