发明授权
- 专利标题: Device and method for remote zeroing of a biological fluid pressure measurement device
- 专利标题(中): 生物流体压力测量装置远程调零的装置和方法
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申请号: US478300申请日: 1995-06-07
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公开(公告)号: US5691478A公开(公告)日: 1997-11-25
- 发明人: Robert L. Barry , Robert F. Alexander
- 申请人: Robert L. Barry , Robert F. Alexander
- 申请人地址: NY Glens Falls
- 专利权人: Schneider/Namic
- 当前专利权人: Schneider/Namic
- 当前专利权人地址: NY Glens Falls
- 主分类号: A61B5/0215
- IPC分类号: A61B5/0215 ; A61B5/0235 ; G01L19/02 ; G01L9/06
摘要:
A device and method for remotely zeroing a hydrostatic pressure compensation device are described which permit a fluid transducer, such as is used in conjunction with an intravenous catheter for the measurement of blood pressure, to be zeroed regardless of its elevation. A hydrostatic pressure compensation tube is placed in closed fluid communication with both faces of the transducer so as to provide the same pressure to each side. As an example, the transducer may measure the deflection with a piezoresistive or piezoelectric crystal or may alternatively utilize a semiconductor membrane with implanted resistive elements. The transducer may be coupled or formed integral to a manifold. In such a device, the transducer may be zeroed at any vertical position.
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