Myoelectric feedback control electric stimulation device and control method thereof

Abstract

The invention discloses a myoelectric feedback control electric stimulation device and a control method thereof, relating to the field of medical instruments. The control method comprises the steps of: collecting a myoelectric signal of a tested object; transmitting the myoelectric signal to a myoelectric signal amplifying unit; converting the myoelectric signal into a digital myoelectric signal; transmitting the digital myoelectric signal to a signal processing and controlling unit; calculating the myoelectric amplitude of the digital myoelectric signal; obtaining the myoelectric amplitude; and judging whether the myoelectric amplitude equals to the optimal myoelectric amplitude; if yes, not changing a stimulation mode, generating a stimulation waveform of the stimulation mode by an electric stimulation generating unit, and carrying out stimulant therapy on the tested object through stimulating electrodes; and if not, adjusting the stimulation mode by the electric stimulation generating unit and the signal processing and controlling unit, using the adjusted stimulation mode as a stimulation mode for the next time, generating a stimulation waveform of the stimulation mode, and carrying out stimulant therapy on the tested object through the stimulating electrodes. According to the myoelectric feedback control electric stimulation device and the control method thereof, the purpose of achieving the optimal stimulation effect in different stimulation modes is realized through adjustment of the stimulation mode.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an electric stimulation device controlled by myoelectric feedback and a control method thereof. Background technique [0002] Neuromuscular Electrical Stimulation (NMES) is an electrical stimulation method that conducts current through the complete peripheral nervous system to cause muscle contraction. Initially, both clinical treatment and researchers focused on the rehabilitation of paralyzed muscles after peripheral nerve injury. It was not until the mid-1970s that the use of neuromuscular electrical stimulation attracted widespread attention. At present, neuromuscular electrical stimulation has been applied to a wide range of fields such as physical therapy and rehabilitation, such as athlete muscle training. Studies have shown that a certain pattern of electrical stimulation can effectively enhance the overall sports quality of athletes, and it is a better way for athletes to ...

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Problems solved by technology

[0003] However, the generation of muscle action potentials not only requires the stimulation to reach a certain intensity, but also requires the variability of the stimulation intensity to be large enough. Otherwise, even if the intensity of the stimulation is large, the action potential cannot be caused, that is, the muscles have adapted to this mode of electrical stimulation. At this time, the effect of electrical stimulation will be inhibited, the effect will become worse or even disappear, and it may cause unnecessary damage to the muscles. Therefore, in the process of electrical stimulation, to keep the stimulation always effective, it is necessary to generate adaptability in the muscles. , adjust the stimulus mode of the stimulus

[0004] Most of the electrical stimulators currently used are open-loop stimulation without feedback links. The common method for selecting the stimulation mode is to use clinical or experimental experience, and the treatment always adopts this stimulation mode, without considering whether the stimulation’s effect on the muscles is real. Effective, stimulating effects are not always at their best

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