Surface Electrode RF Therapy Device with Pulsed Energy and Cooling Control

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Solution Overview

Problem

Conventional invasive RF therapy methods cause pain and discomfort due to rapid temperature increases in the skin, and they struggle to deliver sufficient energy to deep skin layers while maintaining a safe surface temperature.

Innovation Solution

A non-invasive skin treatment device using surface electrodes to deliver electrical energy to deep skin layers, with precise control over output energy per pulse and timing of cooling to manage skin temperature and reduce pain.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If high power RF energy is used to deliver sufficient energy to deep skin layers, then treatment effectiveness is improved, but skin surface temperature increases rapidly causing pain and discomfort

Engineering Contradiction:

ImproveRF energy deliveryVSAvoidskin surface temperature

Core Design Contradiction:

PowerVSTemperature

Solution Approach 1:

The patent applies periodic pulsed RF energy delivery instead of continuous energy supply. The treatment cycle includes multiple pulse shots with specific intervals, allowing the skin surface to cool between pulses while maintaining effective deep tissue heating. This periodic action resolves the contradiction by delivering sufficient total energy to deep layers while preventing excessive surface temperature accumulation that causes pain.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent applies cooling to the skin surface before and between RF energy pulses. By pre-cooling the surface and providing intermittent cooling during treatment, the system prevents surface temperature from rising to painful levels while allowing deep tissue to receive adequate RF energy. This preliminary and intermittent cooling action resolves the temperature contradiction.

Inventive Principle:

Principle #10Preliminary action

2Power

If RF needle electrodes are used for invasive treatment, then deep skin layers can be effectively treated, but pain and tissue damage occur during and after the procedure

Engineering Contradiction:

Improvedeep skin treatment effectivenessVSAvoidpain and tissue damage

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical invasive needle electrode system with a non-invasive surface electrode-based RF delivery system. The surface electrodes deliver RF energy through the skin without physical penetration, eliminating mechanical tissue damage and needle-related pain while maintaining the ability to heat deep skin layers through electromagnetic energy penetration. This substitution resolves the contradiction between effective deep treatment and avoidance of pain/damage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If continuous RF energy is delivered to maintain constant output, then treatment efficiency is improved, but skin surface temperature cannot be controlled causing persistent pain

Engineering Contradiction:

Improvetreatment efficiencyVSAvoidskin surface temperature control

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The patent implements periodic pulsed RF energy delivery with multiple pulse shots within each treatment cycle, replacing continuous energy delivery. This allows the system to maintain high productivity through repeated pulses while providing intervals for surface cooling, thus controlling skin surface temperature and preventing persistent pain. The periodic structure enables both efficiency and temperature control.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent applies cooling measures before and between RF energy pulses to preemptively control surface temperature. By pre-cooling the skin surface and providing cooling during treatment intervals, the system maintains treatment efficiency through continuous RF delivery capability while preventing temperature-related pain. This preliminary cooling action resolves the temperature control contradiction.

Inventive Principle:

Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The device effectively relieves pain by controlling energy delivery to maintain safe skin temperatures, ensuring both effective treatment and patient comfort during RF therapy.

Implementation Method 1

uses the heat generated by radio frequencies to remove damaged collagen, elastic fibers, and/or the like from the deep layers of the skin

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Implementation Method 2

control the cooling part to lower a temperature of the surface of the skin

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 3

control the cooling part to lower a temperature of the surface of the skin by a preset temperature

Methodology Applied

Scientific EffectConvection: Convection

Data Source

PatentUS20250032814A1Method for relieving pain in surface electrode-based RF therapy by controlling output energy per pulse and timing of cooling, and device therefor

Publication Date: 2025.01.30 SKINGRAB CO LTD

AI summary

Disclosed is a pain relief device for relieving pain through control of output energy for each pulse and timing of cooling during surface electrode-based RF therapy. The pain relief device includes an electrode part in contact with surface of skin, an energy supply part that supplies energy to the electrode part during a reference cycle, a cooling part, and a processor that controls the energy supply part and the cooling part. The pain relief device may achieve excellent skin treatment effects while reducing skin pain.