If you watch the news, you hear all the time about the Dow Jones Industrial Average and other aÂ­verages like the S&P 500 or The Russel 2000. These are market averages designed to tell you how companies traded on the stock market are doing in general. The Dow Jones Industrial Average is simply the average value of 30 large, industrial stocks. Big companies like General Motors, Goodyear, IBM and Exxon are the kinds of companies that make up this index. See Dow Jones & Company for details on how the average is calculated.
some psaps also bear a resemblance to bluetooth devices or earphones used with mp3 players depending on the make and model but that s where the similarities end unlike psaps hearing aids are fda approved medical devices which are prescribed and fit by licensed hearing healthcare professionals
The FDA classification of medical devices is based upon classifications for devices currently legally marketed in the United States. The FDA determines the device classification by the device intended use and risk the device presents to the patient.here are 3 FDA regulatory classifications of medical devices: Class I, Class II and Class III. The classifications are assigned by the risk the medical device presents to the patient and the level of regulatory control the FDA determines is needed to legally market the device.