Portable Cryotherapy Plate Using Expanded Gas for Muscle Recovery

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Solution Overview

Problem

Existing muscle recovery devices, such as boots and socks, require external means for cooling and lack precision in targeting specific muscle areas, leading to insufficient thermal shock and delayed recovery due to non-portability.

Innovation Solution

A self-contained, portable device using a pressurized fluid container with a thermally conductive plate and heat exchanger radiator, controlled by a regulator to provide precise temperature control and thermal shock without external means, suitable for muscle recovery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If cryotherapy is used for muscle recovery, then muscle recovery efficiency is improved, but portability and immediate use are worsened due to requirement of external cooling equipment

Engineering Contradiction:
Improvemuscle recovery efficiencyVSAvoidportability
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent combines the cooling function with the support device itself by integrating a cooling element (gel pack, Peltier element, or refrigerant system) directly into the device structure. This merging eliminates the need for separate external cooling equipment, making the device portable and suitable for immediate use while maintaining effective cryotherapy cooling capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The device is designed to be self-contained with its own cooling mechanism, whether through phase-change materials (gel packs), electric Peltier elements, or refrigerant systems. This self-service approach allows the device to provide cryotherapy without requiring external cooling infrastructure, enabling immediate post-exercise use and enhancing portability.

Inventive Principle:
Principle #25Self-service

2Area of stationary object

If cryotherapy is applied to large muscle groups, then cooling coverage is improved, but precision in targeting specific areas is worsened

Engineering Contradiction:
Improvecooling coverage areaVSAvoidtargeting precision
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The device incorporates multiple independent cooling zones or adjustable cooling elements that can be selectively activated. This segmentation allows the user to target specific muscle groups or areas within a larger device footprint, providing both extensive coverage capability and precise targeting when needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The device features variable cooling intensity across different zones, with some areas providing intense localized cooling for targeted therapy while other areas provide gentler cooling for broader coverage. This local quality variation enables the device to adapt to different treatment needs within a single application.

Inventive Principle:
Principle #3Local quality

3Temperature

If rapid cooling is applied to create thermal shock, then muscle recovery effect is improved, but risk of skin damage is worsened

Engineering Contradiction:
Improvecooling intensityVSAvoidskin damage risk
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The device incorporates temperature sensors and control systems that continuously monitor the temperature at the skin interface. This feedback mechanism automatically adjusts the cooling intensity to maintain therapeutic effectiveness while preventing temperatures that could cause skin damage, enabling safe rapid cooling when appropriate.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The device uses intermediate cooling layers (such as gel packs or thermal management materials) between the intense cooling source and the skin. This cushioning approach allows the delivery of high-intensity cooling to achieve thermal shock effects while the intermediate layer prevents direct skin contact with extreme temperatures, reducing damage risk.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

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 efficient, portable muscle recovery with precise temperature control, reducing muscle pain and edema without external equipment, and allowing immediate post-exercise use.

Implementation Method 1

The expansion of the fluid causes significant cooling of the gas escaping from the regulator

Methodology Applied
Scientific EffectJoule-Thomson effect: Joule-Thomson Effect

Implementation Method 2

a heat exchanger radiator positioned in the path of the expanded gas exiting the fluid regulator

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Implementation Method 3

a plate of thermally conductive material configured to rest on the user's skin

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP4308022B1Portable, standalone device for muscle recovery by means of cryotherapy
Publication Date: 2026.02.25 MODELSKI GUILLAUME
  • EP4308022B1 patent drawingFigure 1
  • EP4308022B1 patent drawingFigure 2
  • EP4308022B1 patent drawingFigure 3

AI summary

The invention relates to a portable, standalone device (10) for muscle recovery by means of cryotherapy, which device comprises: - a container (11) of pressurised fluid; - a pressure reducer (12) for the pressurised fluid, the reducer being fluidically connected to the container and provided with an outlet (20) for expanded gas; - a plate (13) made of thermally conductive material, which is designed to bear against the user's skin and is provided with a heat exchange radiator (14) positioned in the path of the expanded gas exiting the fluid pressure reducer.