High sensitivity noise immune stethoscope

A stethoscope, comprising:

• A housing comprising an inner cavity;
• an electromechanical stack positioned within the housing;
• and
• means for mechanically amplifying physiological signals in communication with the electromechanical stack comprising a flexural disc, wherein the flexural disc is structured and arranged to transmit physiological vibrations from tissue of a patient into the electromechanical stack while having sufficient stiffness to impede coupling to air-carried sound, the electromechanical stack generates and electrical signal upon the transmission of the physiological vibration from the tissue of the patient via the flexural disc, and the inner cavity of the housing is not structured to reflect sound.

A stethoscope, comprising:

• a housing having an interior inner cavity and a longitudinal axis;
• a transducer capable of converting mechanical energy into an electrical signal positioned within the housing, wherein the transducer has a longest dimension substantially collinear with the longitudinal axis;
• means for mechanically amplifying forces exerted by physiological activity in communication with the transducer;
• and means for amplifying the electrical signal of the transducer, wherein the flexural disc is structured and arranged to transmit physiological vibrations from tissue of a patient into the transducer while having sufficient stiffness to impede coupling to air-carried sound, the transducer generates an electrical signal upon the transmission of the physiological vibrations from the tissue of the patient via the flexural disc, and the inner cavity of the housing is not structured to reflect sound.