| 摘要 |
A stethoscope chest piece includes a housing having a rigid contact surface to be pressed against a patient's chest for picking-up sounds therefrom; a mass yieldingly mounted with respect to the housing and the contact surface; and an electrical transducer in the housing and cooperable with the mass and the contact surface to generate an electrical signal corresponding to the displacement of the contact surface relative to the mass. Also described are a stethoscope apparatus including processing circuitry for reducing noise, a loudspeaker for converting the output of the chest piece to sound, various features making the apparatus attractive to children, and a method of using the apparatus for monitoring a physiological condition of a patient. |
