Multi-Audio Stethoscope Head

A multi-audio stethoscope head, comprising:

• a head body;
• a vibrating diaphragm;
• and
• a fastener;
• a fastener sidewall configured for attaching to the head body;
• and
• a diaphragm pressing portion configured for attaching the vibrating diaphragm to the head body,
• wherein a sound collecting surface is provided on the head body, a sound guiding hole is provided in the sound collecting surface, and the fastener includes an axial through hole,
• wherein the vibrating diaphragm is disposed between the diaphragm pressing portion and the head body, and includes a lower surface facing the sound collecting surface of the head body and an upper surface opposite to the lower surface,
• wherein a sound collecting cavity is defined between the vibrating diaphragm and the sound collecting surface, wherein at least one protruding pole which protrudes towards the vibrating diaphragm is arranged on the sound collecting surface of the head body at an radially inner side of the through hole of the fastener, and the vibrating diaphragm, when not subjected to an external force, is spaced from the protruding pole so that a sound of a first frequency is heard by the stethoscope head, and
• wherein when the vibrating diaphragm is pressed to concave inwards and rest against a top end of the protruding pole, the sound collecting cavity is not divided into a plurality of disconnected compartments and a sound of a second frequency different from the first frequency is heard by the stethoscope head.