Medical device circuit boards are usually placed in the inner casing or internal structure of the device. This is done mainly to protect the circuit board from the external environment such as dust, humidity, and temperature. Also, placing the circuit board in the inner casing helps prevent the user from accessing the electronic components on the board and ensures safety in use.
Medical devices are instruments, equipment, apparatus, in vitro diagnostic reagents and calibrators, materials, and other similar or related items used directly or indirectly in the human body, including the required computer software.