As our technology gradually improves, we can use some instruments or even a small magnet to avoid some large-scale treatment options, such as avoiding unnecessary surgeries or some drugs. So let us introduce two types of magnetic therapy that can help you!

Magnets generate energy in the form of magnetic fields. Usually two types of magnets are used, one of which is an electromagnet. Electromagnets do not have any magnetism at ordinary times. A magnetic field is generated when current is released. In TMS It’s the magnet in therapy! TMS stimulates nerve cells in the brain to treat migraines and other painful conditions. Its effects are due to electric fields rather than magnetic fields. The second type is permanent magnets. The permanent magnets used in magnet therapy are neodymium iron boron magnets. , NdFeB magnets generate a magnetic field through their own internal electron spin. They are usually used in insoles, bracelets, or even attached to the skin. Moreover, the magnetic field around the magnetic therapy equipment increases with distance, and its magnetic strength decreases too quickly, even though it carries oxygen. The blood protein hemoglobin has weak diamagnetic properties (when oxidized) or paramagnetic properties (when deoxygenated), and still cannot significantly affect hemoglobin or other blood components such as muscle tissue, bones, blood vessels or organs, etc.

Note: Magnets may interfere with medical devices such as pacemakers or insulin pumps!

First, let’s take a brief look at the magnets used in medical treatments such as permanent magnets and NdFeB magnets!

Neodymium Iron Boron (Nd-Fe-B)

Permanent magnet materials mainly include aluminum nickel cobalt (AINiCo) metal permanent magnets, the first generation SmCo5 permanent magnet (called 1:5 type samarium cobalt alloy), the second generation Sm2Co17 (called 2:17 type samarium cobalt alloy) permanent magnet. Magnet, the third generation of rare earth permanent magnet alloy Nd·FeB (called NdFeB alloy). With the development of science and technology, the performance of iron-boron permanent magnet materials continues to improve, and its application fields continue to expand. Sintered NdFeB with high magnetic energy product (50 megagauss ≈ 400k]/m3, high coercivity (28EH, 32EH) and high operating temperature (240C) has been industrially produced. The main raw materials of NdFeB permanent magnets are rare earth metal neodymium (Nd) 32%, metallic element iron (Fe) 64% and non-metallic element boron (B) 1% (with a small amount of dysprosium (Dy), terbium (Tb), cobalt added (Co), niobium (Nb), gallium (Ga), aluminum (AI), copper (Cu) and other elements). NdFeB ternary permanent magnet material is based on Nd2Fe14B compound, and its composition should be similar to the molecular formula of the compound Nd2Fe14B. However, when the Nd2Fe14B composition is completely proportioned, the magnetic properties of the magnet are very low or even non-magnetic. Only when the content of neodymium and boron in the actual magnet is higher than that of the Nd2Fe14B compound can better permanent magnet performance be obtained.

There are three main parameters: remanence Br (Residual Induction), unit Gauss. After removing the magnetic field from the saturation state, the remaining magnetic flux density represents the strength of the magnetic field that the magnet can provide to the outside world; coercive force Hc (Coercive Force), unit Oersteds is to place a magnet in a reverse applied magnetic field. When the external magnetic field increases to a certain intensity, the magnet's magnetism will disappear. This ability to resist the external magnetic field is called coercive force, which represents a measure of the ability to resist demagnetization; magnetic energy Product BHmax, unit Gauss-Oersteds, is the magnetic field energy generated by unit volume of material. It is a physical quantity that determines how much energy a magnet can store. It is the magnet with the highest commercial performance found so far. It is called the magnet king and has extremely high magnetic properties. Its maximum magnetic energy product (BHmax) is more than 10 times higher than that of ferrite. Its own machining performance is also quite good. The operating temperature can reach up to 200 degrees Celsius. Moreover, its texture is hard, its performance is stable, and it has good cost performance, so it is widely used. However, because of its strong chemical activity, its surface must be treated with a coating. (Such as Zn, Ni plating, electrophoresis, passivation, etc.).

【Magnetic therapy function】

1. Analgesia:

- The analgesic effect of magnetic therapy is multi-faceted. For example, magnetic therapy can improve blood tissue nutrition, thus overcoming pain caused by iron deficiency, hypoxia, inflammatory exudation, swelling and compression of nerve endings, and accumulation of pain-causing substances:

- The magnetic field can increase the activity of hydrolase of pain-causing substances, hydrolyze or transform the pain-causing substances, and achieve the purpose of labor pain:

- The magnetic field can stimulate acupuncture points, dredge meridians, reconcile qi and blood, and reduce the excitability of peripheral nerves through nerve reflexes under acupoints, thereby achieving analgesic effects.

The principle of analgesia is that under the action of the magnetic field, the swelling is eliminated or reduced, so that the sensory nerves are no longer compressed, and the pain is reduced or disappeared. The magnetic field directly acts on sensory nerve endings, reducing the excitability of sensory nerves and causing pain relief or disappearance. The magnetic field can increase the activity of hydrolase of pain-causing substances, so that the pain-causing substances histamine, 5-hydroxytryptamine, bradykinin, and potassium ions are hydrolyzed or converted, so that the level of pain-causing substances reaches below the pain threshold without causing pain.

2. Anti-inflammation and swelling: There are two causes of inflammation: biological and non-biological:

- Biological inflammation is caused by bacteria, viruses, and parasites;

- Non-biological inflammation is caused by low temperature, high temperature, various toxicities, mechanical trauma, etc. Generally speaking, magnetic therapy has a better effect on chronic inflammation of non-biological inflammation and biological inflammation. Because the magnetic field can strengthen local blood circulation and improve tissue permeability, it is conducive to the dissipation and absorption of exudates; in addition, the magnetic field can also improve the body's non-specific immunity, activate white blood cells, and enhance phagocytosis, so it can reduce swelling and inflammation. effect.

3. Lower blood pressure and lipids:

- Magnetic fields can strengthen the inhibitory process of the cerebral cortex, regulate autonomic nerves, strengthen the body's microcirculation function, and cause blood pressure to drop.

- The magnetic field can change the long hydrocarbon chain of cholesterol into short chains and become a polycrystalline center. Coupled with the rotation of red blood cells, cholesterol can easily deposit on the blood vessel wall and be easily excreted, so it also has the effect of lowering blood lipids.

4. Sedation: Magnetic therapy has a certain regulatory effect on meridians, nerves, body fluids, etc. It can not only improve sleep status, promote falling asleep and extend sleep time, but also relieve muscles and reduce itching.

5. Inhibit tumors: Magnetic therapy has a certain inhibitory effect on both benign and malignant tumors.

- Excessive tumors, such as fibromas, lipomas, etc., can be reduced or disappeared;

- It can also improve malignant tumors, such as digestive tract tumors, lymphomas, liver cancer, kidney cancer, etc.

Symptoms, growth inhibition or lump reduction, etc.

【Other uses】

NdFeB magnets can achieve unexpected effects in car modification and decoration

like:

1. If you want to hang a small item on the car but can't find the hook, you can use this super strong magnet to attach it to the ceiling of the car.

2. The one-yuan coins in the storage box like to run around. A small piece can keep them together and stop them from falling everywhere. Magnets are like magic. There are many more attractive places. It depends on how you want to develop them.

Of course, magnets are already around us. There are many items that contain magnets. You can say that we can no longer live without magnets. Take the mobile phones, TVs and other machines that we use daily. In fact, these products all contain magnets. Motor, and one of the materials composed of the motor is NdFeB magnet! Then let us see what other application scenarios permanent magnet magnets have

【Application Scope】

Electroacoustic field: speakers, receivers, microphones, alarms, stage audio, car audio

Electronic appliances: permanent magnet vacuum circuit breaker, magnetic latching relay, electric meter, water meter, sound meter, reed switch, sensor, etc. Motor field: VCM, CD/DVD-ROM, generator, electric motor, servo motor, micro motor, motor, vibration motor, etc.

Mechanical equipment: magnetic separation, magnetic separator, magnetic crane, magnetic machinery, etc. Healthcare: nuclear magnetic resonance apparatus, medical equipment, magnetic therapy health care products, magnetized fuel saver, etc.

Other industries: magnetized wax protectors, pipe descalers, magnetic clamps, automatic mahjong machines, magnetic locks, door and window magnets, luggage magnets, leather goods magnets, toy magnets, tool magnets, craft gift packaging, etc.

There is one more thing we need to pay attention to! Because NdFeB is a very powerful magnet, we need to pay attention to a few points.

1) NdFeB magnetic material is hard, brittle, and has a strong magnetic field. It should be handled with care (especially large sizes and thin pieces). When the strong magnet itself attracts or separates from other iron objects, be careful not to impact it! Otherwise, it is easy to The magnet may be damaged or your fingers may be pinched due to collision!

2) When the magnets are attracted to each other and cannot be separated, it is recommended to push them horizontally and stagger them, and never pry hard.

3) Strong magnets should be kept away from iron objects and easily magnetized items, such as monitors, bank cards, computers, TVs, mobile phones, etc.

4) Strong magnets should be stored in a dry, constant-temperature environment, separated and wrapped with plastic, wood chips, cardboard, foam, etc.

5) This object may have an impact on some metering equipment such as water meters, electricity meters, and gas meters, causing inaccurate measurements.