RF Skin Treatment Tip Control With Pulsed Energy and Pre-Cooling

The patent applies periodic action by controlling RF energy emission in multiple discrete pulses rather than continuous emission. The control unit emits RF energy a plurality of times with each emission having a controlled duration, creating periodic on-off cycles that prevent continuous heat accumulation and reduce burning risk while maintaining treatment effectiveness through repeated thermal stimulation.

The patent implements preliminary action by emitting cooling gas to the skin surface before RF energy emission begins. This pre-cooling step prepares the skin by lowering its initial temperature, creating a thermal buffer that allows subsequent RF energy application without immediately exceeding safe temperature thresholds, thereby preventing burning while enabling effective treatment.

The patent resolves this contradiction by using periodic action to emit RF energy in multiple short pulses rather than one long continuous emission. Each pulse has a limited duration that prevents excessive heat buildup, while the repeated pulses collectively achieve the desired cumulative heating effect for effective treatment without extending any single emission's duration to dangerous levels.

The patent maintains continuity of useful action by performing multiple sequential RF energy emissions rather than a single emission. Although each individual emission is short-lived, the repeated emissions continue the therapeutic effect over time, achieving proper heating through accumulation of multiple brief thermal exposures rather than relying on any single prolonged emission.

The patent applies preliminary action by emitting cooling gas only before RF energy emission, not continuously throughout or after treatment. This timed pre-cooling approach provides sufficient safety protection during the critical pre-heating phase while minimizing cooling gas usage time, thereby maintaining safety without unnecessarily extending the overall treatment duration and preserving treatment efficiency.

The patent uses periodic action where cooling gas emission is synchronized with RF energy emission cycles. Cooling gas is emitted in specific time windows before and between RF pulses rather than continuously, creating a periodic pattern that provides safety protection during vulnerable phases while allowing efficient treatment during active RF emission phases, thus balancing safety and efficiency.