Peltier Cryogenic Treatment for Controlled Skin Cooling

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Solution Overview

Problem

Current cryogenic devices face limitations such as the use of regulated R-152A gas in liquid form, which is costly and limited in dispensing direction, and lack control over cooling temperature for effective skin cryotherapy.

Innovation Solution

A cryogenic device utilizing a refillable container with carbon dioxide or other gases, controlled by a computer system, featuring a multi-stage thermoelectric cooler and temperature sensor to manage cooling and dispensing, allowing direction control and safer operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If R-152A gas in liquid form is used for cryotherapy, then effective skin freezing is achieved, but the device is limited in dispensing direction and cost increases

Engineering Contradiction:

Improvedispensing direction controlVSAvoiddevice cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent changes the physical state parameter of the cryogenic fluid from liquid to gas phase, and switches from R-152A to alternative gases like CO2 or nitrogen. This parameter change enables versatile directional dispensing through controlled gas flow while reducing regulatory restrictions and operational limitations, effectively resolving the contradiction between adaptability and manufacturing ease.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If cryogenic fluid is applied to skin lesions, then treatment efficacy is achieved, but uncontrolled cooling temperature reduces safety

Engineering Contradiction:

Improvetreatment efficacyVSAvoiduncontrolled cooling temperature

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates temperature sensors that provide real-time feedback on the cooling temperature during cryotherapy treatment. This feedback mechanism allows the system to monitor and adjust the cooling process, ensuring the temperature remains within the effective treatment range while preventing excessive cooling that could cause tissue damage, thus resolving the contradiction between treatment efficacy and safety.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts the cooling parameters based on real-time temperature measurements and treatment requirements. By making the cooling process adaptive rather than static, the system can maintain optimal treatment temperatures while automatically preventing harmful overheating or overcooling, thereby resolving the contradiction between reliable treatment and safety.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If multi-stage thermoelectric cooler is used to control cooling temperature, then temperature control precision is improved, but device complexity increases

Engineering Contradiction:

Improvecooling temperature controlVSAvoidcooling system structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical refrigeration systems with multi-stage thermoelectric coolers (Peltier devices) that use electrical current to achieve precise temperature control. This substitution eliminates the need for moving parts, compressors, and refrigerants, thereby achieving high measurement precision in temperature control while actually reducing overall system complexity and improving reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Enables safer, cost-effective, and versatile cryotherapy with controlled cooling temperatures and directional fluid dispensing, enhancing treatment efficacy for skin lesions.

Implementation Method 1

a multi-stage thermoelectric cooler connected to the heat exchanger to cool the fluid in the heat exchanger

Methodology Applied

Scientific EffectPeltier effect: Peltier Effect

Implementation Method 2

a heat exchanger connected to an outlet of the container, wherein the fluid is cooled in the heat exchanger

Methodology Applied

Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 3

a temperature sensor is also attached to the cooling coil to measure temperature

Methodology Applied

Scientific EffectTemperature sensing: Thermocouple

Data Source

PatentUS20250331910A1Peltier Cryogenic Treatment System

Publication Date: 2025.10.30 LOREAL SA

AI summary

A cryogenic device includes a container. The container includes a fluid suitable to be used in skin cryotherapy. The cryogenic device includes a heat exchanger connected to an outlet of the container, wherein the fluid is cooled in the heat exchanger. The cryogenic device includes a multi-stage thermoelectric cooler connected to the heat exchanger to cool the fluid in the heat exchanger. The cryogenic device includes a nozzle after the heat exchanger that discharges the cooled fluid onto a skin surface. The cryogenic device includes a computer configured to open the nozzle when a temperature is reached.