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有效孔径:手术门假肢的新尺寸参数,以告知门选择

Changfu Wu1, Chad Green2, Salvador Marquez3

  • 1Office of Cardiovascular Devices, Center for Devices and Radiological Health, Food and Drug Administration, Silver Spring, MD, USA.

Annals of cardiothoracic surgery
|June 6, 2024
PubMed
概括

在一项多实验室研究中,假体心脏门的新标准有效孔径被发现始终小于标记尺寸. 这种测量可以更准确地评估门功能,从而改善外科选择.

关键词:
手术性心脏门假肢手术有效的孔径是有效的孔径.标有标签的门大小.假肢-患者不匹配情况稳定向前流量测试试验

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Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...
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