Hearing aids, as a medical device product for personal use, have developed at an extremely fast speed

Hearing aids, as a medical device product for personal use, have developed at an extremely fast speed, although they have only a few decades of production history. Most of the hearing aids developed and marketed in the 1950s and 1960s were semiconductor hearing aids. Its appearance is like a pocket semiconductor radio, which is not only inconvenient to carry, but also has a low signal / noise ratio. While hearing aids amplify their speech, they also amplify ambient noise, making them extremely uncomfortable. In the 21st century, foreign hearing aid production technology has improved significantly. Some new digital hearing aid products have appeared on the market, while low-cost disposable hearing aids, analog circuit hearing aids and other products still occupy a considerable market share, and some implanted hearing aids are still being tested. In addition, some medical device companies in the United States have also developed special hearing aids for dogs and cats that have been raised for more than 15 years. This product can make a listless old dog or cat become lively and lovely again. Western economists predict that pet hearing aids will also have a huge market.

 At present, hearing aids developed and marketed abroad can be divided into three categories from the line technology, namely basic analog circuits, programmed analog circuits, and digital circuits. Digital circuits are recognized as the most advanced general-purpose communication technology. This kind of circuit can not only amplify the voice, but also properly shield the ambient noise, and its effect is better than several other hearing aids. In recent years, hearing aid products developed and marketed in western countries are mostly digital circuits. In the western developed countries such as the United States, the sales of digital hearing aids with smaller size and better sound quality have been increasing year by year. Hearing aids for analog circuits, because of their low prices, also have a good market in the market.

 It is worth noting that the market prices of hearing aid medical device products vary widely. The simplest analog circuit hearing aids cost 400 to 750 US dollars each; programmed analog circuit hearing aids usually cost 800 to 1900 US dollars; all digital circuit hearing aids each cost as high as 3,000 to 4,000 US dollars, non-ordinary working class The patient can afford it. The high price limits the expansion of the digital hearing aid market share, while the relatively inexpensive analog circuit hearing aids will continue to be the leading hearing aid products in the international market for a long time to come, as the product sales are, after all, consumed by most consumers Influence the actual purchasing power of consumers.

 Hearing aids on the market are roughly divided into two types: externally worn and built-in ear canal. Both types of hearing aids have a good market abroad.

 1. Hearing aids behind the ears: Hearing aids can be processed according to the shape of the auricle of the individual, so that the wearer can feel very comfortable. It consists of digital circuit integration block, miniature pickup, microphone and speaker. It transmits sound into the ears through two headphones.

 2. Disposable hearing aids: With the rapid development of integrated circuit production technology and the significant reduction in production costs, since 2005, foreign countries have begun to produce disposable hearing aids. The so-called disposable hearing aid is not a single use like a disposable syringe, but a hearing aid that can be used continuously for 40 to 70 days. General hearing aids not only need to be repaired and maintained after long-term use, but also need to change the battery frequently, which is very troublesome. Disposable hearing aids can eliminate the above-mentioned troubles and can be discarded after a period of use. At present, the disposable hearing aids listed abroad not only have clear sound quality but also small size, and there are multiple models to choose from.

 3. Glasses-type hearing aid: The characteristic of this hearing aid is that from the appearance, it is not a hearing aid, but a pair of glasses. The frame is particularly thick, and the components of the hearing aid are installed in the frame of the glasses, and a wire is connected to the earphone through the end of the frame. As long as the patient puts on the pair of glasses, he can clearly hear what others are saying. The product design is very novel and practical, and has won the United States Best Design Award.

 4. External hearing aids: The so-called external hearing aids refer to ultra-small hearing aids that can be placed in a knapsack carried by a woman or hidden in a bra. It amplifies the collected sound through a wire and then introduces it into the patient’s ear. This type of plug-in hearing aid product is very popular in western countries and is quite popular among older women.

 5. Infrared hearing aids: Infrared hearing aids are very suitable for deaf people to listen to reports in large conference rooms. The principle is that sound is converted into signals like FM waves by infrared technology, and then a portable infrared receiving device is used to convert specific signals into sound. Infrared hearing aids are relatively advanced products.

 6. Induction coil type hearing aid: This is also a newly developed hearing aid product abroad. Sound can produce different strength electromagnetic fields in the coil. Using this principle, the current of the electromagnetic coil can also be restored to sound. The advantages of this type of hearing aid are low production costs, but the disadvantage is that the electromagnetic induction coil is very susceptible to interference from surrounding electronic radiation signals, such as radiation interference from household microwave ovens and mobile phones, which generates electronic noise. However, induction coil hearing aids are indeed a low-cost hearing aid product that is well worth developing. Relevant experts believe that as long as it can improve its shortcomings of being susceptible to electronic radiation interference, it may become a popular hearing aid product popular with consumers.

 With the rapid development of science and technology and the increasingly miniaturization of electronic integration blocks, a variety of miniature hearing aid products that can be hidden in the ear canal have been developed and marketed abroad. Although they are small in size, they have all the internal organs, and they also have components such as batteries, pickups, and microphones. These components are all placed in a flexible plastic rod. This flexible plastic rod can be easily inserted into the ear canal.