In the medical field, heat and cold therapy, as an ancient and effective means of treatment, is widely used in the treatment of various diseases and injuries. It uses temperature changes to affect the body's blood circulation, nerve conduction and tissue metabolism to achieve pain relief, reduce inflammation, promote healing and other purposes. This paper will introduce the purpose of cold and heat therapy in detail, and briefly introduce a modern treatment equipment-cold and heat compression therapy machine.


The purpose of cold therapy
Reduce local congestion or bleeding: Cold therapy through a substance below the temperature of the human body, directly acting on the skin tissue, so that the epidermal blood vessels contraction, avoid capillary dilation and rupture, thereby improving vascular congestion and bleeding and other symptoms. This is especially effective for acute soft tissue injuries, nose bleeding and other conditions.
Reduce pain: Cold therapy can reduce the skin temperature, slow down the nerve conduction speed, reduce the transmission of painful nerve impulses, and thus reduce the sense of pain to a certain extent. It is often used for toothache, burn and other pain treatment.
Control the spread of inflammation: Cold therapy can slow blood flow, reduce cell metabolism and microbial activity, and help control the spread of inflammation. This is an important treatment for patients in the early stages of inflammation.
Hypothermia: Cold therapy lowers body temperature through direct contact with the skin, using physical effects such as conduction and evaporation. It is often used in the treatment of patients with high fever, heat stroke, etc., and can also be used for local or systemic cooling of patients with brain trauma and brain hypoxia to reduce brain cell metabolism and oxygen demand.

The purpose of heat therapy
Promote the dissipation of inflammation: Heat therapy acts on the skin tissue through heat higher than the skin surface temperature, so that the inflammatory exudate is quickly absorbed and dissipated, which is conducive to dissolving the necrotic tissue and promoting tissue repair.
Reduce pain: heat therapy can accelerate the absorption of pathogenic tissues and inflammatory exudates, relieve the stimulation and pressure of nerve endings, reduce the excitability of pain nerves, thereby reducing the sense of pain. It has a better relief effect on the pain caused by mild to moderate muscle soreness and arthritis.
Reduce deep tissue congestion: Heat therapy can speed up blood circulation, reduce blood viscosity, and cause blood vessels to dilate, thereby reducing the symptoms of deep tissue congestion.
Warm and comfortable: Heat therapy by heat action on the skin tissue, so that blood vessels in a state of dilation and accelerated blood circulation, increase blood volume, increase skin temperature, improve skin discomfort and cold feeling.

Introduction to hot and cold compression therapy machines
The hot and cold compression therapy machine is a modern medical equipment that combines the functions of cold compress and hot compress, as well as pressure technology. It is usually composed of two parts of the main engine and peripheral accessories, the main engine includes the refrigeration system, the temperature control system and the water circulation control system, the peripheral accessories include the thermal insulation hose and the special protection of the hydrofoil in each part.

This device provides a cold source or heat source through a semiconductor refrigeration system, cools or heats the water in the tank to the clinically required water temperature, and then outputs it to the water sac through the water circulation system. The water sac is in contact with the patient's body and uses the water cycle to take away heat or provide heat to achieve local cooling or heating effect. At the same time, the device also has a pressurization function, which can promote blood circulation and lymphatic return through pressure, further accelerating the dissipation of inflammation and wound healing.

The cold and heat compression therapy machine has the advantages of simple operation, controllable temperature, adjustable pressure, etc., which is suitable for the treatment of various diseases and injuries. It can be used not only for the treatment of acute soft tissue injury, joint fracture before and after surgery, but also for the treatment of patients with degenerative osteoarthropathy, hemophilia acute joint swelling stage, etc. In addition, the device is also widely used in rehabilitation training, for patients with joint swelling pain, fever has a significant effect.

In short, heat and cold therapy, as a simple and effective means of treatment, plays an important role in the medical field. The cold and heat compression treatment machine, as a modern application equipment for cold and heat therapy, provides patients with more convenient and efficient treatment options.