How to clean hearing aid speakers and microphones

The patient reported that the sound of the hearing aid became smaller, mainly due to the malfunction of the speaker and microphone. After listening to the patient's feedback, the staff should first listen to the hearing aid with a listening tube to see if it is consistent with the patient's feedback. If the sound is really too small, but it can still be heard, use a microscope or slap lens to see if there is a foreign body blocking the sound tube of the speaker. If the blockage is serious, you can use a small tool to take out the foreign body, and then use the suction needle of the vacuum pump to suck out the remaining foreign body. In this cleaning process, you should constantly use a microscope or slap lens to check whether there are any foreign objects blocked in the horn sound guide tube, and whether the foreign objects are indeed cleaned; you must also continue to listen to the sound tube to see if the sound returns to normal and high frequency. Whether the tone appears. If it is cleaned, the high-frequency sound also appears, and it can be considered cleaned up at this time. Pay special attention to hearing aids with sound not to be easily cleaned by vacuum pumping, because the sound often disappears after the vacuum pump is vacuumed, and it is often impossible to explain to the user at this time. Only hearing aids that are completely silent and have a clean horn sound tube can be pumped with a vacuum pump. For microphones, generally do not use suction needles, because high-pressure gas may make the diaphragm inside the microphone contaminate. Generally, an electronic dryer is used for baking.

In practice, the cleaning effect of the above-mentioned method is better for the speaker failure caused by the blockage. But the microphone generally does not have a good recovery effect. Use a small tool to add a suction needle and then use an electronic dryer to dry, this three-step method is better. Therefore, hearing aids that are not very time-critical can be dried with an electronic dryer for about 8 hours.

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