Non-Thermal Plasma Wound Coating Device

The patent applies preliminary action by pre-polymerizing monomers into oligomers or low molecular weight polymers before plasma treatment. This pre-prepared polymer material is then introduced to the substrate, allowing the plasma process to focus on deposition and crosslinking rather than initiating polymerization from monomers. This approach achieves complete polymerization while preserving active agents, as the polymerization occurs before exposure to plasma conditions that could damage sensitive functional groups.

The patent utilizes parameter changes by controlling plasma conditions (power, gas composition, pressure, exposure time) to optimize the deposition process. By adjusting these parameters, the plasma can effectively deposit and crosslink pre-formed polymers without causing excessive heating or degradation of active agents. The plasma parameters are tuned to achieve sufficient crosslinking for coating integrity while maintaining the functionality of incorporated active agents.

The patent exploits phase transitions by utilizing the plasma state of matter, which allows energy delivery without significant thermal heating of the substrate. The plasma phase enables reactive species to deposit polymer material at controlled rates while the substrate remains at or near ambient temperature. This phase-specific approach allows high deposition rates without thermal damage to temperature-sensitive substrates or active agents.

The patent applies periodic action through pulsed plasma treatment, where plasma is applied in controlled intervals rather than continuously. This pulsed approach allows for coating deposition while providing cooling periods that prevent thermal accumulation and damage to sensitive materials. The periodic plasma application maintains productivity by delivering material in controlled bursts while protecting temperature-sensitive components.