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MEDICAL PRESSURE MEASURING DEVICE AND BREATHING APPARATUS
专利权人:
MAQUET CRITICAL CARE AB
发明人:
Magnus HALLBÄCK
申请号:
US16615220
公开号:
US20200155784A1
申请日:
2017.06.21
申请国别(地区):
US
年份:
2020
代理人:
摘要:
The present disclosure relates to a medical pressure measuring device (100) for measuring a pressure of a pressurized breathing gas supplied to a subject by a breathing apparatus (200). The device (100) comprises a pressure sensor (110) arranged at a point of measurement (195) and configured to measure the pressure of a sample gas at a sampling point (190). The sampling point (190) and the point of measurement (195) are connected by a pressure sampling tube (180) in which a pressure wave of the sample gas can propagate from the sampling point (190) to the point of measurement (195). The pressure sampling tube (180) has a sampling tube volume and an acoustic impedance.The medical pressure measuring device (100) further comprises a damping arrangement (120) arranged to be brought into fluid communication with the pressure sampling tube (180). The damping arrangement (120) comprises a flow restrictor (130) and a receptor chamber arrangement (140). The receptor chamber arrangement (140) comprises a receptor chamber (141). The receptor chamber arrangement (140) is an arrangement for receiving the pressure wave of the sample gas. The flow restrictor (130) correlates to the acoustic impedance of the pressure sampling tube (180) so as to prevent acoustic resonance in the pressure sampling tube (180). The receptor chamber (141) correlates at least to the volume of the pressure sampling tube (180), so as to prevent acoustic resonance in the pressure sampling tube (180).
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