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Peltier Cryotherapy

Studies and projects around a system for the treatment of pain and inflammation caused by the cold

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Presentation :

The biocompatible medical system for the treatment of pain and inflammation caused by cold.

Perfect for edema, haematomas, tears, healing, recovery, sprains, inflammation and drainage.

Blocks pain and the inflammatory process, resorbs oedemas and accelerates tissue healing.

It therefore saves time towards the resumption of activity and recovery.

Implementation : 

  • a closed circuit of chilled water generated by a Peltier module and feeding a face mask or leg splint
  • a compressed air circuit generated by an air pump and allowing pressotherapy to be carried out on the splint

Pedagogical activities :

Pedagogical exploitation in ISS (under development)

Activity 1: Describe the mode of operation in relation to the use cases.

Activity 2: Based on the SysML model and measurements, verification of the conformity of the temperature control chain and criticality of the implemented solution.

Activity 3: Study of the Peltier effect and yield calculation. Industrial applications

Activity 4: Modelling the temperature controller and determining its transfer function

Activity 5: Liquid-air heat exchanger modelling and performance verification

Activity 6: Modelling the impact of flow on heat exchange and flow augmentation solutions

Activity 7: Identification of solutions to increase throughput. Modelling of throughput gains

Project: Programming of temperature control in Python. Performance tests and validation

Project: Mechanical design of a cryotherapy helmet and necessary evolutions of the system to reduce the water regime to -2°C/2°C.

 

Pedagogical operations in STI-2D (Under development)

Activity 1: Discovery of the system & Verification of the technical specifications of the specifications

Activity 2: Study of the Peltier effect and yield calculation. Industrial applications

Activity 3: Evaluate the differences in behaviour between the multi-physical model of the liquid-air heat exchanger and the real one.

Activity 4: Modelling the impact of flow on heat exchange and flow augmentation solutions

Activity 5: Identification of bio-compatible materials suitable for the manufacture of the mask (Possible use of CES Edupack)

Activity 6: Study of technical standards on medical equipment and impacts on the design and evolution of the "IceCompression" system.

Activity 7: Research and selection of a manufacturing process for the mask

Activity 8: Mechanical studies around the heat exchange radiator of the Peltier module (With Solidworks model)

Activity 9: Study of sensors, electronic control of pumps. Time study of the operation.

Project: Creation of a WiFi communication with the system and a remote supervision interface.

Project: How to improve the thermal performance of the system in order to be able to use the 115W Peltier Module on large braces? Identification of losses by thermal camera. Measurement of DeltaT...

Technical solutions discussed :

The product allows you to carry out educational activities related to mechanical, energy, electrical, electronic and software design, as well as to work on temperature control. It is also a remarkable platform for didactic projects. The "Peltier Cryotherapy" RY10 system consists of :

An "Ice Compression" system from the start-up EasyCryo consisting of:

  • A 115W Peltier module with liquid/air transfer combined with a temperature controller.
  • A chilled water circuit with a compact pump, insulated flexible pipes and quick connectors.
  • Compressed air circuit with compact air pump, flexible piping (for the implementation of static and dynamic compression cycles on the part of the body being treated)
  • A touch screen
  • An electronic controller
  • A face mask
  • A knee brace

A set of system instrumentation consisting of:

  • Temperature sensors (Tank, Peltier module inlet/outlet, Mask inlet/outlet, Mask in/latch
  • Flow meter on the hydraulic circuit
  • Pressure sensor on the compressed air circuit
  • Peltier module control signal
  • Water pump control signal
  • Current loop on the system power supply
  • Voltage measuring points on the system power supply
  • Sensor signal conditioning and control board for acquisition with the "USB Data Acquisition Unit" (Ref: AQ10) or other solution.

A connector system to branch the control/command signals to the "RaspberryPipour Cryotherapy Peltier Electronic Prototyping Box". (Ref: RY11)

  • The system's controller and display then become inactive in favour of the prototyping box.
  • Within the framework of projects, a new connected control/command solution can then be developed on the basis of the Python code provided.
  • As the system is totally open, it is possible to develop a new control/command on other propotyping environments already available in the laboratory.

 

As an option, the following test benches are available:

"Liquid/Air Peltier Module and Temperature Control" (Ref: RY00)

"Liquid/Air Peltier Module and Temperature Control" (Ref: RY01)

Strong points :

Study of the Peltier effect and heat exchangers

Study of standards associated with medical equipment (bio-compatible materials...)

Instrumented hydraulic and pneumatic circuits

Possibility to prototype/complete a connected control system with Python programming

Modelling of system evolutions (Pipe diameter, Insulation, Flow change...) and real tests on the system thanks to component changes.

Possibility to program/modify the temperature control in Python

 

This product is accompanied by a technical and pedagogical file in digital format including:

HTML site with activities, projects, assignments and resources

Programming sources, block diagrams

Behavioural simulation models

Diagrammes SysML...