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Non-invasive measurement of pressure - using pressure transducers positioned against elastic vessel wall in triangular arrangement with additional central transducer
Non-invasive measurement of pressure - using pressure transducers positioned against elastic vessel wall in triangular arrangement with additional central transducer
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机译:压力的无创测量-使用压力传感器,以三角形布置紧贴弹性血管壁放置,并带有附加的中央传感器
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摘要
To measure the pressure in a vessel having flexible walls or otherwise provided with an external elastic membrane, a coplanar array of pressure sensors (12) or transducers is applied against the elastic vessel wall, the internal pressure of the vessel is taken as the value at a point when at least three of the transducers (12), arranged in a triangular configuration, measure the same pressure. - Preferably there is a fourth central transducer, the transducers are Wheatstone bridge type, and a lead screw passing through a housing is used to push the array a controlled distance towards the vessel wall.
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