SHENZHEN QIANHAIKANGQIYUAN SCIENCE AND TECHNOLOGY CO.; LTD.
发明人:
ZHANG, Guanjing,张贯京
申请号：
CNCN2017/073517
公开号：
WO2017/215277A1
申请日:
2017.02.14
申请国别(地区):
WO
年份:
2017
代理人:
摘要：
Disclosed is a phonendoscope based on a piezoelectric thin film (11), comprising a stethoscope head (1), a sound amplifying device (2), a sound guiding pipe (3), a listening pipe (4) and earphones (5). The stethoscope head (1) comprises a sound sensor (10). The sound amplifying device (2) comprises a sound collector (21) and a sound amplifier (22). One end of the sound collector (21) is connected to the sound sensor (10), the other end of the sound collector (21) is connected to one end of the sound amplifier (22), the other end of the sound amplifier (22) is connected to one end of the sound guiding pipe (3), the other end of the sound guiding pipe (3) is connected to a lower end branch pipe (41) of the listening pipe (4). The listening pipe (4) comprises one lower end branch pipe (41) and two lateral branch pipes (42). The sound sensor (10) collects auscultation sound from a patient, an outer surface of the sound sensor (10) is provided with the piezoelectric thin film (11). The piezoelectric thin film (11) comprises an aluminium foil layer (111), a polyvinylidene fluoride layer (112) and a carrier layer (113), wherein the polyvinylidene fluoride layer (112) is located between the aluminium foil layer (111) and the carrier layer (113). The earphones (5) play the auscultation sound from the patient, so that a doctor performs auscultation for the patient. The phonendoscope can effectively avoid interference of external environmental sound, and improve sensitivity and accuracy of the stethoscope head (1) in collecting various auscultation sounds in the chest of a patient.La présente invention concerne un phonendoscope à base de film mince piézoélectrique (11), comprenant une tête de stéthoscope (1), un dispositif damplification de son (2), un tube de guidage de son (3), un tube découte (4) et des écouteurs (5). La tête de stéthoscope (1) comprend un capteur de son (10). Le dispositif damplification de son (2) comprend un collecteur de son (21) et un amplificateur de
