An inhaler is a small, medical device designed to deliver medication into the lungs of a patient with respiratory problems. Inhalers are required by those suffering from asthma and with breathing problems due to nasal congestion, etc. It provides short-term relief from wheezing, breathlessness, and coughing spasms. Medicine is put into an inhaler and the user puffs on the inhaler. The medicine goes directly into the airways on breathing in for immediate relief.
A spacer, also referred to as a holding chamber, is a large plastic or metal device which enhances the use of an inhaler. It has a mouthpiece on one end and an opening at the other end to which the aerosol inhaler is connected.
A metered dose inhaler, or MDI, is a device that supplies lungs with a specified amount of medication. This is delivered in short bursts of aerosolized medicine self-administered by the patient. A MDI is generally used in the treatment of asthma, chronic pulmonary and other respiratory diseases.
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