What is low frequency pulsed electrical therapy?

Generally speaking, the medicine we use to relieve pain is painkillers, and almost every family has this kind of medicine on hand. However, some experts believe that although painkillers have a certain analgesic effect, their side effects are still very large and can damage human nerves. Therefore, painkillers should not be taken frequently. There are many clinical methods for pain relief, such as the high-tech method of low-frequency pulse electrotherapy.

Low frequency impulse electrotherapy: The method of treating diseases by using pulse current with a frequency below 1000H is called low frequency impulse electrotherapy. Its characteristics are: (1) they are all low voltage, low frequency, and adjustable; (2) they have no obvious electrolytic effect; (3) they have a strong stimulating effect on sensory and motor nerves; (4) they have analgesic but no thermal effect. Currently commonly used low-frequency pulse electrotherapy includes: induction electrotherapy, intermittent electrotherapy, electrical sleep therapy, superstimulation electrotherapy, transcutaneous nerve electrical stimulation therapy, electrical excitation therapy, etc.

Basic Introduction

(a) Induced current and new induced electricity, see induction electrotherapy. Mainly used for induction electrotherapy, electroexcitation, electrogymnastics and electrodiagnosis, etc.

(ii) Square wave: The waveform is rectangular or square. Commonly used in electrodiagnosis, electrosleep, superstimulation and electrical excitement.

(3) Exponential curve wave (also known as triangular wave) is a pulse current that rises and falls according to the mathematical exponential law. Commonly used in electrical gymnastics, electrical diagnosis, etc.

t rise - is the time required for the triangle wave to rise from the starting point to the peak point, in milliseconds.

t drop - is the time required for the triangle wave to drop from the peak point to the origin, in milliseconds.

t width = t liter

teffective = tup + tdown

t stop - pulse interval time = TT effective

(iv) Modulation wave: The process of changing the amplitude and frequency of a current with a higher frequency as the amplitude of a current with a lower frequency changes is called modulation. The controlled current (i.e., higher frequency) is called the modulated wave; the controlling current (i.e., lower frequency) is called the modulating wave.

Function Introduction

The physiological and therapeutic effects of low-frequency pulse current mainly include:

(a) Exciting neuromuscular tissue The ability to excite neuromuscular tissue is an important characteristic of this electric current. Because electrical stimulation can destroy the membrane polarization state, it may cause neuromuscular excitation. The absolute refractory period of mammalian motor nerves is mostly around 1ms, so each pulse of low-frequency pulse electricity with a frequency below 1000Hz may cause a motor response.

(ii) Promoting local blood circulation This is also one of the main physiological and therapeutic effects of low-frequency pulse current. Its mechanism of action can be found in medium-frequency electrotherapy.

(III) Analgesia Analgesia is also one of the important functions of low-frequency pulse current. For its mechanism, please refer to medium-frequency electrotherapy.