It comprises a membrane at the listening head connected by a dual tube to the headgear with ear olives that are placed into the users’ ears. A mechanical listening device designed for listening to sounds from the heart, lungs, and/or gastrointestinal tract from adult and paediatric patients.
....It is designed as a hollow tube (trumpet-shaped) to transmit the foetal heart sound through the inner channel by air conduction and is pressed against the outside of the mother's abdomen and the user will place their head and ear to the listening end of the device. A mechanical listening device that is used for listening to foetal heart sounds.
....Designed specifically to detect higher frequencies which are produced by newborns and infants. It typically comprises amembrane at the listening head connected by a split "Y" tube to theheadgear with ear olives that are placed into the users’ ears. A mechanical listening device designed for listening to sounds from the heart, lungs, and/or gastrointestinal tract.
....It is used to listen to the activities sound change of human body heart, lung and organs.
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