发明名称 |
Method and apparatus for estimating systolic and mean pulmonary artery pressures of a patient |
摘要 |
The method of estimating systolic and mean pulmonary artery pressures of a patient, comprising the steps of (a) producing an electric signal xs(t) representative of heart sounds of the patient; (b) extracting second heart sound S2(t) from the signal produced in step (a); (c) extracting pulmonary and aortic components P2(t) and A2(t) from S2(t); (d) extracting a signal representative of mean cardiac interval; (e) correlating the pulmonary and aortic components P2(t) and A2(t) to obtain a cross correlation function; (f) measuring a splitting interval of the cross correlation function obtained in step (e); (g) producing a normalized splitting interval; and (h) estimating the systolic and mean pulmonary artery pressures by means of predetermined regressive functions. The present invention also relates to an apparatus for estimating systolic and mean pulmonary artery pressures of a patient.
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申请公布号 |
US6368283(B1) |
申请公布日期 |
2002.04.09 |
申请号 |
US20000658631 |
申请日期 |
2000.09.08 |
申请人 |
INSTITUT DE RECHERCHES CLINIQUES DE MONTREAL;UNIVERSITE LAVAL |
发明人 |
XU JINGPING;PIBAROT PHILIPPE;DURAND LOUIS-GILLES |
分类号 |
A61B5/021;A61B5/024;A61B7/04;(IPC1-7):A61B5/00 |
主分类号 |
A61B5/021 |
代理机构 |
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代理人 |
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地址 |
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