发明名称 |
Apparatus, software, and methods for cardiac pulse detection using a piezoelectric sensor |
摘要 |
Signal data obtained from a piezoelectric sensor placed on a patient's body is used to detect the presence of a cardiac pulse. The piezoelectric sensor has a transducing element adapted to sense movement due to a cardiac pulse and produce piezoelectric signal data in response thereto. Processing circuitry analyzes the piezoelectric signal data for a feature indicative of a cardiac pulse and determines whether a cardiac pulse is present in the patient based on the feature. In one aspect, the feature may be a temporal feature such as a relative change in energy. In another aspect, the feature may be a spectral feature such as the energy or frequency of a peak in the energy spectrum of the signal. In yet another aspect, the feature may be obtained by comparing the piezoelectric signal data with a previously-identified pattern known to predict the presence of a cardiac pulse. Multiple features may also be obtained from the piezoelectric signal data and classified to determine the presence of a cardiac pulse. |
申请公布号 |
US8160703(B2) |
申请公布日期 |
2012.04.17 |
申请号 |
US20050187616 |
申请日期 |
2005.07.22 |
申请人 |
PHYSIO-CONTROL, INC. |
发明人 |
STICKNEY RONALD E.;JAYNE CYNTHIA P.;LANK PAULA;O'HEARN PATRICIA;JOO TAE H.;HAMPTON DAVID R.;NOVA RICHARD C.;KELLY PATRICK F.;SALTZSTEIN WILLIAM E. |
分类号 |
A61N1/362;A61B5/046;A61B5/11;A61N1/37;A61N1/39 |
主分类号 |
A61N1/362 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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