Auscultation apparatus with two optical microphones

摘要

An auscultation apparatus including an optical microphone is proposed. Optical microphones can reliably acquire sounds of the most disparate frequencies even in an environment permeated by electromagnetic fields, without influencing said fields. Such an optical microphone of an auscultation apparatus can be disposed inside a medical examination and diagnostic device during operation. Given a suitable arrangement, both the heart sounds and the respiratory sounds of a patient can be recorded and monitored already with just one optical microphone.

主权项

1. An auscultation apparatus to be used during an examination by a medical examination and diagnostic device, comprising:
an optical microphone arranged in a single auscultation head of the auscultation apparatus for acquiring sounds caused by a patient during the examination; at least one second optical microphone not arranged in the single auscultation head of the auscultation apparatus and disposed at a distance from the optical microphone during the examination and inside an examination region of the medical examination and diagnostic device for acquiring noise caused by using the medical examination and diagnostic device during the examination; and a data processing device connected to the optical microphone and the at least one second optical microphone for analyzing the sounds, wherein the data processing device analyzes the sounds in occurring repetition times for determining a time instance at which a selected sound occurs for triggering the medical examination and diagnostic device at the time instance, and wherein the data processing device converts the noise acquired by the at least one second optical microphone as a constant scaling factor, and wherein the data processing device subtracts the converted constant scaling factor from the sounds acquired by the optical microphone to eliminate the noise caused by using the medical examination and diagnostic device during the examination from the sounds caused by the patient during the examination.