Sensor device for electromyographic recording of muscle signals from the skin

Abstract

The invention relates to the technical field of electromyogram recording sensor devices and discloses a sensor device for electromyogram recording of skin muscle signals. The sensor device comprises aflexible strap, the surface of the flexible strap is fixedly connected with a hollow passage which is movably connected with a positioning groove, spring supports are movably connected to two sides of the positioning groove respectively, compression springs are movably connected in the spring supports, and a slide rod is movably connected to one end, away from the positioning groove, of each spring support. A storage box is fixedly connected to the top end of each slide rod. Sarcolemma action potential changes are converted into strong electrical signals to attract elastic rods to extend andretract so as to pull the positioning groove to move; due to symmetrical design of electromagnetic coils, magnetic forces generated by the electromagnetic coils are unequal; in addition, the electromagnetic coils drive the slide rods to slide on surfaces of slide rails when extruding the elastic rods to move, so that the positioning groove is driven to move by extrusion plates, and an effect of positioning wearable sensors is achieved.

Description

technical field [0001] The invention relates to the technical field of electromyographic recording sensor equipment, in particular to a sensor equipment for electromyographic recording of skin muscle signals. Background technique [0002] The skin surface electromyographic sensor belongs to a sensor used in the field of rehabilitation medical engineering and bioelectric control technology. It consists of four parts: pre-stage, amplifier stage, notch stage and output stage; its working principle is to transform the muscle membrane action potential Visualized electromyography. [0003] The inevitable result of the sarcolemmal action potential is the excitation and contraction coupling of skeletal muscle, so the EMG represents the contraction of the muscle, and for some patients with muscle disorders, the EMG sensor must be worn on the body for a period of time to be accurate. Draw the electromyogram. [0004] Existing EMG sensors have been able to accurately capture sarcolem...

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Problems solved by technology

[0004] Existing EMG sensors have been able to accurately capture sarcolemmal action potentials, but there is no suitable wearing device. When the patient moves, it will cause the wearing part to shake, and the EMG sensor will receive different signals when it is at different positions on the muscle surface. The same potential change, such a change will lead to the final detection result of the electromyogram; in addition, the existing electromyography sensor does not have the positioning function, and the patient lacks medical knowledge, so when the position of the detection is changed, it must be detected by Medical staff can only make adjustments, limiting the patient's range of movement, so sensor devices for EMG recording of muscle signals from the skin came into being

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