Medical respirator,mid-20th century

Numéro d’image : 11695896
Medical respirator,mid-20th century
Medical respirator,mid-20th century. This is a Beaver II respirator,an early form of medical ventilator,a machine designed to mechanically move breathable air into and out of the lungs. Ventilators provide the mechanism of breathing for patients who cannot breathe by themselves. Their development resulted from the need to treat paralysed polio patients,as well as anaesthetised patients who were increasingly being given muscle relaxant drugs which paralyse the respiratory muscles. The rubber concertina reservoir bag (top) was regularly compressed by a small electric motor,to deliver air or oxygen to the patient
Licence : Droits gérés
Crédit: Science Photo Library
Taille de l’image : 3503 px × 4989 px
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Property Release : Non requis
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