Electrode device for receiving neuromuscular signals

Abstract

The invention relates to an electrode device for receiving neuromuscular signals. The electrode device consists of two receiving electrodes which are same in structure and form a loop, wherein an arc-shaped needle electrode is led out of the end surface of the tail end of a connector of each receiving electrode; an acupuncture protecting sheath bending outwards is fixed at the adjacent sections ofthe needle electrodes and the connectors in a leaning manner; a cylindrical clamping handle is arranged at the outer end of the acupuncture protecting sheath. The electrode device for receiving the neuromuscular signals has the beneficial effects that after the loop is formed, nerve detecting equipment is adopted to obtain neuromuscular physiological parameters by means of received potential difference generated by movement of bilateral muscles, the remaining method is convenient, the puncture depth is stable, the use is safe and reliable and simultaneously the dropping is not easy in operation; the sensitivity for receiving the signals can be improved, the obtained amplitude is obvious, the manufacture is easy, the time of surgical operation such as thyroid operation is shortened, the pain of a patient is relieved, the treatment cost and the labor intensity of doctors are reduced, benefits are brought to the doctors and the patient, and the classic tracheal-intubation type nerve monitoring cannula can be completely replaced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a nerve myoelectric signal receiving electrode device used in surgical operations such as thyroidectomy, cervical lymph node removal, partial laryngectomy, and neck biopsy for monitoring and protecting vocal cord nerves. Background technique [0002] Electromyography (EMG) is the superposition of motor unit action potential (MUAP) in many muscle fibers in time and space, among them, surface electromyography (SEMG) is the synthesis of EMG of superficial muscles and electrical activities of nerve trunks on the skin surface Compared with needle electrode EMG, SEMG has the advantages of non-invasiveness, non-invasiveness, and simple operation in measurement. Therefore, SEMG has important practical value in clinical medicine, ergonomics, rehabilitation medicine and sports science. Research and analyze the detection and analysis methods of electromyographic signals, including ...

AI Technical Summary

Problems solved by technology

[0004] However, there are many forms of receiving electrodes on the market, among which needle-pricking electrodes are more commonly used, but most of them cannot be safely and stably placed in the larynx during neck operations such as thyroid surgery, and have no effect on the movement of the vocal cords. Effective monitoring of nerve function has many defects, for example, the needle body is too long, it is easy to pierce the laryngeal cartilage, it is difficult to indwell, it also increases the operation time, the indwelling is unstable, and at the same time, it is easy to fall off during the operation. , Obtained low value of nerve EMG signal, unstable monitoring signal, high false positive rate and other defects

[0005] To sum up, the root cause of these problems is that the structure of the receiving electrode is very imperfect. The structure of the acupuncture electrodes on the market is completely simulated on the basis of traditional electrodes used in other fields and then extended to various technical fields. Until today The electrodes used in thyroid surgery still belong to the previous structure. Because the electrodes in these fields where electrodes were used in the past are similar, including shape, positional relationship, length, angle and other coefficients, there are no significant differences, and they can only perform basic functions. As a result, it is impossible to ensure the professional application level of the corresponding industry

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