Animal experiment auditory nerve stimulation electrode and device and manufacture method thereof

Abstract

The invention discloses an animal experiment auditory nerve stimulation electrode and device and a manufacture method thereof. The stimulation electrode comprises an animal in-cochlea electrode array, an animal loop electrode portion, a connection portion, a slender portion, a wave spiral portion, a taper-shaped portion and insertion pins, wherein the animal in-cochlea electrode array comprises eight animal contact electrodes , eight platinum-iridium alloy wires connected with the animal contact electrodes respectively and an identification block; the animal loop electrode portion comprises one animal loop electrode and a first stainless steel wire connected with the animal loop electrode; and the connection portion enables the animal in-cochlea electrode array and the animal loop electrode portion to be fixedly connected together. Provided are the animal experiment auditory nerve stimulation electrode which is convenient to implant, high in reliability and low in cost, and can stimulate the auditory nerve of an animal and the manufacture method of the animal auditory nerve stimulation electrode, as well as the animal auditory nerve stimulation device which can accurately extract experimental data.

Description

technical field [0001] The invention relates to the field of nerve stimulation, in particular to an animal experiment auditory nerve stimulation electrode, a device and a manufacturing method thereof. Background technique [0002] A cochlear implant consists of an implant in the cochlea, a speech processor, a microphone and a transmission device. The sound is received by the microphone and converted into an electrical signal, and then sent to the speech processor to amplify and filter the signal, and then sent to the stimulator by the transmitter, and the generated electrical pulse is sent to the corresponding electrode contact, thereby stimulating the auditory nerve in the cochlea to generate excitement and Send sound information to the brain to produce hearing. In the whole cochlear implant system, the cochlear electrode is a very important part of the cochlear implant. [0003] At present, the cochlear implant electrodes used in the world need to be verified by laborato...

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Problems solved by technology

[0003] At present, the cochlear implant electrodes used in the world need to be verified by laboratory research and animal experiments when developing new products. There are two kinds of stimulating electrodes in the auditory nerve stimulation device used in animal experiments. One is to bury a single electrode directly in the cochlea of ​​the animal. The pathological changes of the cochlear tissue can be observed in stages. Although this method can better control the position of the electrode, the operation is very delicate and time-consuming, and it is impossible to bury a single microelectrode in the apex of the cochlea. Insufficient, the obtained data is not comprehensive; the other is to do animal experiments with finished cochlear implants. Although this method solves the problem that the auditory nerve at the apex of the cochlea cannot be stimulated, the cost is high, and the length and size are different from the size of the animal cochlea. matching, resulting in inaccurate experimental evidence

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