发明名称 |
APPARATUS AND METHOD FOR DISCRIMINATING FLOW OF BLOOD IN A CARDIOVASCULAR SYSTEM |
摘要 |
An implantable cardiac stimulator includes means for delivering a first electrical shock via implantable stimulating electrodes at a time when there is substantially no flow of blood, as determined by conventional fibrillatio n detection means. At least one of the stimulating electrodes is disposed in a blood flow path of the cardiovascular system. The first shock is preferably of insufficient energy level to cause defibrillation. A potential is measured a s a function of time between the blood-contacting electrode and a reference electrode following delivery of the first shock to obtain a first potential equilibration function under no-flow conditions. A second therapeutic electrical shock, preferably of sufficient energy level to effect defibrillation, is delivered via the stimulating electrodes. A second potential equilibration function is measured following delivery of the secon d shock. The first and second potential equilibration functions are compared, and if the two functions are sufficiently different in morphology, it is determined that blood is flowing.
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申请公布号 |
CA2219307(C) |
申请公布日期 |
2001.07.24 |
申请号 |
CA19962219307 |
申请日期 |
1996.05.31 |
申请人 |
SULZER INTERMEDICS INC. |
发明人 |
ROSBOROUGH, JOHN P.;BONNERUP, CHRIS A.;MUNSHI, MOHAMMED Z. |
分类号 |
A61N1/39;(IPC1-7):A61N1/39 |
主分类号 |
A61N1/39 |
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