Like any type of product, there is high cost, low cost and midrange cost options. This is no exception for medical device manufacturers. The alarm within medical equipment can vary depending on the technology associated with the device. Higher cost options within the alarm system could be absorbed easily since buyers are already expecting to pay a premium price. However, for lower cost manufacturers adding a high cost component could raise the price of the overall device by a few percent which could be significant.
The High Cost Route
The high cost option meets all requirements set forth by the IEC 60601-1-8 international standard. The high cost choice usually contains a microcontroller or microprocessor which outputs a complicated signal producing the frequency and four harmonic sounds to satisfy the IEC 60601-1-8 requirement. To be loud enough, the alarm speaker must be large and contain audio processors and powerful electronic components. This option takes tremendous proficiency and time to develop.
The Low Cost Route
An alternate option is to produce the four harmonic sounds acoustically with the low cost option. This is accomplished by placing a speaker in an acoustic chamber. The user must apply a sine wave and the four harmonics are naturally produced in the chamber. An example of this can be found when an individual blows into a wooden train whistle. The output is several sound frequencies simultaneously. Also, this method allows the user to significantly increase the volume also through acoustics.
Meeting the IEC60601-1-8 Requirements
In order to meet the requirements of this standard, cost is a significant factor. The more expensive the internal alarm, the improved chance the medical device will meet the requirements of the specification. The key for medical device manufacturers to keep costs down is to produce these finished products in the most efficient manner possible.








