On this day (October 12), 1928, an artificial respirator is used for the first time in Boston.
In the year 175 AD. C We owe the first practical attempts to Galen of Pergamon who experimented with a device called a fire bellows to blow air into the lungs of a dead animal.
Between the years 1493 and 1541 Paracelsus carried out numerous experiments by resuscitating a patient by placing a tube in the patient's mouth and blowing air through a bellows.
In the year 1543 AD. C. Vesalius described what is currently understood as mechanical ventilation. The Padua professor created the concept and defined it as follows in his famous book De humani corporis fabrica libri septem: "Life can be restored to the animal, by making an opening in the trunk of the trachea, placing a reed tube or wicker, then it will be inflated into it, so that the lungs can rise again and take in air'; for this he carried out multiple experiments on pigs. This was the first attempt at intermittent positive pressure ventilation.
The studies of Paracelsus and Vesalius were continued by Highmore, Hooke and Lower who made, on October 10, 1667, a demonstration keeping a dog alive by supplying a continuous flow of air, documented in his book Philosophical transactions.
In 1744, the first case in which mouth-to-mouth respiration was applied was documented, carried out by Tossach, who explained the technique that was applied to a miner to save his life. In 1775, the English doctor John Hunter developed a double-way ventilatory system that allowed fresh air to enter through one of them and exhaled air to exit through the other, which he used only in animals.
In 1911, Dräger had already created a positive pressure ventilation device, which was known as the Pulmotor, it used a cylinder of oxygen or compressed air as a source of energy for its operation and delivered a mixture of these gases and ambient air to the patient, through a nasobuccal mask.
The famous iron lung was invented by P. Dinker, an American engineer from the New York Consolidated Gas Company, who designed a tank in which the patient was introduced, leaving only his head outside; This applied intermittently negative pressures on the body, in such a way that breathing was possible. The mechanics of the apparatus consisted of creating respiratory movements caused by pressure changes: positive pressure was applied to the airway (IPPV) and, in addition, a negative pressure was generated in the thorax with respect to the mouth. It was created to be used in patients who had injured the muscle wall.
The iron lung was first used on October 21, 1928 at Boston Children's Hospital, on an unconscious girl with respiratory problems who recovered very quickly when placed in the respirator chamber, which popularized the invention.
As a curiosity, comment that in 1930 it was written in a newspaper that the iron lung weighed two tons and was so large that an adult could fit in it, except for the head, which must be left outside.
-------------------------------------------- -------------------------------------------------- ---------
- I just bought a respirator
- a respirator?
- to breathe
- man, I already imagine that a respirator is for breathing
- if it were a switch it would be for... for something, who knows what switches do...
- and what do you want us to do?
- test it
- with whom?
- with you
- man, isn't there another one?
- someone sick who can't breathe, for example
- that's why I bought it
- then try it with a sick person
- what if it doesn't work?
- you must have been wrong
- and will you support me?
- how cute
- I just don't like you
- no need to be so honest