The artificial middle ear, also known as an implantable hearing aid, is an artificial device for the middle ear that transmits the vibrations of sound waves to the inner ear in place of the function of the middle ear sound transmission device (auditory chain). The artificial middle ear consists of three main parts: first, a microphone is used to receive external sound and convert the sound into electrical energy; second, an electrical impulse is amplified by a circuit on a connected battery, which obviously needs to be supplied with electrical energy for this amplification; the third step is the conversion of the amplified electrical impulse into mechanical vibrations through a vibrator in direct contact with the auditory bone. As a result, the amplified sound energy is transmitted directly to the lymph fluid in the inner ear, causing the lymph fluid to vibrate and stimulate the auditory end receptors to produce hearing. With conventional hearing aids, a microphone receives external sound and converts it into electrical energy, which is amplified and then converted into acoustic energy that is transmitted to the inner ear via the air of the external ear canal and the middle ear sound transmission device that causes the stapes to vibrate. The difference between an artificial middle ear and a conventional hearing aid is that the sound energy is converted into electrical energy and then amplified to cause the hearing bone to vibrate directly. Therefore, it can transmit sound into the inner ear in a high-fidelity, noise-free and feedback-free manner.