Monopolar Bipolar Current Control for Skin Depth Energy Delivery

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Solution Overview

Problem

Conventional skin care devices fail to accurately deliver abundant or efficient electrical energy to specific depths of the skin during high-frequency irradiation, leading to reduced accuracy and prolonged treatment times, with limitations in maximizing skin improvement effects while preventing skin burns.

Innovation Solution

An apparatus and method that include a plurality of needle-type electrodes, an energy supply part for applying monopolar and bipolar currents, and a processor to control the current intensities based on the target depth, ensuring precise and efficient energy delivery by sequentially applying currents at varying intensities during needle insertion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional skin care devices perform high-frequency irradiation, then skin treatment is provided, but the accuracy of energy delivery to specific skin depths is reduced and treatment time is prolonged

Engineering Contradiction:

Improveaccuracy of energy deliveryVSAvoidtreatment time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent segments the treatment process into distinct phases: monopolar current application during needle insertion to reach target depth, followed by bipolar current application at the target depth for treatment. This segmentation allows each current type to serve its optimal function at the appropriate stage, improving both accuracy and efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically switches between monopolar and bipolar current modes based on the real-time position of the needle electrodes. The processor monitors insertion depth and automatically transitions from monopolar (during insertion) to bipolar (at target depth), optimizing energy delivery accuracy without manual intervention or prolonged treatment time.

Inventive Principle:

Principle #15Dynamics

2Quantity of substance

If conventional devices apply high-frequency current to skin tissue, then collagen regeneration is stimulated, but the ability to deliver abundant electrical energy to specific depth is limited

Engineering Contradiction:

Improveamount of electrical energy deliveredVSAvoiddepth-specific energy delivery accuracy

Core Design Contradiction:

Quantity of substanceVSManufacturing precision

Solution Approach 1:

The patent applies different current characteristics locally according to depth requirements: monopolar current is used during insertion to penetrate to the target depth, while bipolar current is applied at the target depth for localized treatment. This local quality differentiation ensures abundant energy delivery precisely where needed in the skin layers.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The system changes key parameters including current type (monopolar to bipolar), current intensity, and treatment depth based on real-time needle position feedback. The processor adjusts these parameters dynamically to deliver abundant electrical energy at the specific target depth while preventing excessive energy delivery to superficial layers.

Inventive Principle:

Principle #35Parameter changes

3Speed

If monopolar current is applied during needle insertion, then electrodes reach target depth efficiently, but risk of skin burns increases without proper control

Engineering Contradiction:

Improveneedle insertion speedVSAvoidskin burn risk

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The system employs periodic alternation between monopolar and bipolar current application with controlled timing. Monopolar current is applied intermittently during insertion to maintain speed, then transitions to bipolar current at the target depth. This periodic action pattern manages heat accumulation and reduces skin burn risk while maintaining efficient insertion speed.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The processor continuously monitors needle insertion depth and provides feedback control for current application. Based on this feedback, the system adjusts current intensity and timing, switching from monopolar to bipolar mode at the appropriate depth, thereby preventing excessive heat generation and skin burns while maintaining efficient insertion speed.

Inventive Principle:

Principle #23Feedback

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 solution increases the accuracy of high-frequency irradiation, shortens treatment time, and maximizes skin improvement effects while preventing skin burns by accurately delivering abundant electric energy to specific skin depths.

Implementation Method 1

a device employing the method of transmitting high frequency to skin tissue repeatedly infiltrates the deep portion (e.g., the dermal layer) of the skin with RF needle electrodes that reciprocate in a vertical direction, and removes damaged collagen and elastic fibers from the deep portion of the skin of the target area and promote new formation, using heat generated by high frequencies

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS20240335659A1Apparatus and method for applying monopolar and bipolar currents by skin depth during needle insertion

Publication Date: 2024.10.10 SEO SUK BAE

AI summary

Disclosed is accurately apply abundant or efficient electric energy during high-frequency irradiation.