发明名称 |
Medical monitor with failure protection |
摘要 |
An apparatus for and method of monitoring respiration of a patient using impedance changes of the body to indicate respiration events. The impedance changes are measured by applying a carrier signal across the thorax of the patient. The carrier is periodically interrupted to produce a quiet period. A first level detector assumes the presence of EMI if the signal present during the quiet period exceeds a predetermined threshold. A second level detector senses the presence of substantial high frequency EMI. At initial power up, a third level detector checks for presence of signal before the carrier drive is applied. A fourth test circuit checks for the hang up of the differential amplification circuit.
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申请公布号 |
US5792068(A) |
申请公布日期 |
1998.08.11 |
申请号 |
US19930157737 |
申请日期 |
1993.11.24 |
申请人 |
EDENTEC, INC. |
发明人 |
BOWMAN, BRUCE R.;STASZ, PETER |
分类号 |
A61B5/053;A61B5/08;A61B5/113;(IPC1-7):A61B5/04 |
主分类号 |
A61B5/053 |
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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