Variable-shape surface electromyography electrodes

Abstract

The present invention provides a variable-shape surface electromyography electrode, comprising: an electrode capsule, a plurality of surface electrodes are uniformly distributed on the surface; a bracket is arranged inside the electrode capsule, and the part where the front end of the propped electrode capsule is in contact with the skin is used for electrode detection area; the bracket includes a support ring and a pulling unit, the support ring is formed by alternately connecting a plurality of first support sheets and second support sheets, and the first support sheets and the second support sheets are all rotationally connected; the pull unit has a fixed sheet, Pull wire and stepping motor, the fixed piece is fixed at the junction of the first supporting piece and the second supporting piece, the pulling wire is connected between the two opposite fixing pieces, the stepping motor is connected with the pulling wire, and the stepping motor rolls the wiring to The length of the pull wire is adjusted to change the shape of the support ring, thereby changing the shape of the electrode detection area at the front end of the electrode capsule. The shape of the detection area on the electrode capsule can be changed from a strip shape to an approximately rectangular shape and various transitional shapes between the two shapes.

Description

technical field [0001] The invention relates to a variable-shape surface electromyography electrode, which belongs to the field of medical equipment. Background technique [0002] Electromyography (EMG) is a method of using electronic instruments to record the electrical activity of muscles at rest or contraction, and using electrical stimulation to examine nerve and muscle excitation and conduction functions. [0003] This examination can determine the functional status of peripheral nerves, neurons, neuromuscular junctions, and the muscles themselves. [0004] By measuring the duration and amplitude of the motor unit potential, whether there is spontaneous electrical activity under quiet conditions, and the wave pattern and amplitude of muscle contraction, it is possible to distinguish between neurogenic damage and myogenic damage, and to diagnose acute and chronic damage to the anterior horn of the spinal cord. (such as prepoliomyelitis, motor neuron disease), nerve root...

AI Technical Summary

Problems solved by technology

[0006] When performing surface electromyography electrode detection, in the detection process, sometimes it is necessary to change the detection area covered by the surface electrode array, or change the shape of the detection area, while the shape of the existing surface electrode array is fixed Shape and fixed area, unable to achieve the purpose of changing the detection area

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