Provox Micron HME is a disposable device that features a calcium chloride-treated foam core in a plastic housing. Provox Micron HME also contains an electrostatic filter material which reduces airborne particles. The filter consists of synthetic fibres which, during the manufacturing process, generate electrical charges on the fibre surface. The result is a highly stable, coarse fibred electrostatic filter media with high efficiency against sub-micron particles and low air flow resistance.The housing of Provox Micron HME can be pressed down to occlude the stoma in order to speak with a voice prosthesis. When the pressure is released, the housing automatically retracts and opens the airway passage.
A non-sterile device designed as a filter for protecting a stomal opening in the windpipe (surgically-created artificial opening between the trachea and the body surface through which the patient can breathe) against harmful external influences. It may also function as a heat & moisture exchanger (HME) intended to capture the patient's exhaled breath so that it can be used to warm and moisten inspired air to help keep the trachea lubricated and prevent its mucosa from drying. It is typically designed as a hydrophobic foam filter of various sizes held in place with an adhesive strip. This is a single-use device changed regularly according to the manufacturer's instructions.
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