C-shaped electrode

Abstract

The invention relates to a C-shaped electrode which comprises a clamp body and an electrode wire. The clamp body comprises a clamp body and a clamp handle which are connected with each other, the clamp body is C-shaped, and the minimum inner diameter of the clamp body is the maximum value of the diameter of an object to be measured; one end of the electrode wire is connected with the wire, the other end of the electrode wire extends along the clip body, the electrode wire comprises an embedding part embedded into the clip body and a contact part extending out of the inner surface of the clip body, and the contact part is of an elastic structure. The object to be measured compresses the contact part of the electrode wire, the top of the contact part is tightly attached to the object to be measured, and due to the fact that the elastic coefficient of the electrode wire is low and the pressure borne by the object to be measured is small, the structure can record electric signals of the object to be measured permanently and stably without damaging the object to be measured; in addition, due to the structure of the C-shaped body, the electrode can be clamped on an object to be detected more conveniently, and meanwhile the object to be detected can be prevented from being damaged.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a C-shaped electrode. Background technique [0002] Auditory monitoring technology is mainly used in cerebellopontine angle surgery to protect hearing by monitoring and early warning of the auditory pathway during surgery. Common auditory monitoring techniques include auditory brainstem response, cochlear electrogram, direct action potential monitoring of auditory nerve, and otoacoustic emission of distortion products. Among them, direct action potential monitoring of auditory nerve has a large signal-to-noise ratio, rapid damage feedback, and is the most real-time and accurate. The main structure of the vestibulocochlear nerve recording electrode used in this technique is platinum-silver bipolar electrode wire or electrode sheet. [0003] The existing cochlear nerve direct action potential recording electrodes include spherical electrodes, brush electrodes, rod electrod...

AI Technical Summary

Problems solved by technology

These three kinds of electrodes are not easy to be permanently fixed on the nerve, and are easy to fall off or shift

The C-shaped electrode wraps around the auditory nerve in a pincer shape. It clamps the auditory nerve through the force of the torsion spring. The inner electrode sheet can be close to the nerve, but a special pulling device is required to open the electrode when it is placed or removed. Clamp arm, more complicated to operate

In addition, the compound action potential of the vestibulocochlear nerve needs to be continuously monitored during the operation, and the electrode placement time may be as long as several hours. The long-term clamping of the existing conventional C-shaped electrodes may cause nerve damage

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