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Ultrasonic wave nebulizers were invented in 1965 [16] as a new type of portable nebulizer. The technology inside an ultrasonic wave nebulizer is to have an electronic oscillator generate a high frequency ultrasonic wave , which causes the mechanical vibration of a piezoelectric element.
The first nebulizer was invented and designed by Sales-Girons in 1858. The first dry powder inhaler was invented by Newton in 1864. And finaly the pressurized Metered Dose Inhaler (pMDI) only was launched in March 1956 as the last type of inhaler. For the treatment of asthma all the 6 type of inhalers have historicaly been used (at least to ...
Iron lung cylinder (black), patient head exposed through sealed opening. Diaphragm (yellow) mechanically extends/retracts, varying cylinder air pressure, causing patient chest to expand (inhale) (top) and contract (exhaling) (bottom) A patient wearing a cuirass respirator 1939 Dutch newsreel on the function of the iron lung
Artificial ventilation or respiration is when a machine assists in a metabolic process to exchange gases in the body by pulmonary ventilation, external respiration, and internal respiration. [1] A machine called a ventilator provides the person air manually by moving air in and out of the lungs when an individual is unable to breathe on their own.
This is a new type of nebulizer which does not use induction to mix the sample and gas. Instead, pneumatic atomization is employed here, which results in the micro-mixing of fluids using a reflux cell. [5] This means that there is a turbulent mixing of the liquid and gas which results in great sensitivity and is very efficient.
Non-invasive ventilation (NIV) is the use of breathing support administered through a face mask, nasal mask, or a helmet.Air, usually with added oxygen, is given through the mask under positive pressure; generally the amount of pressure is alternated depending on whether someone is breathing in or out.
The Engtröm 150 artificial respirator, which delivered air straight into the lungs using an endotracheal tube placed into the windpipe, was invented by Carl-Gunnar Engström. Carl Gunnar David Engström (1 September 1912 – 9 January 1987) was a Swedish physician and innovator.
With conventional ventilation where tidal volumes (V T) exceed dead space (V DEAD), gas exchange is largely related to bulk flow of gas to the alveoli.With high-frequency ventilation, the tidal volumes used are smaller than anatomical and equipment dead space and therefore alternative mechanisms of gas exchange occur.
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