Heart defibrillating and monitoring system
First Claim
1. In a heart defibrillating and monitoring system having a source of high-voltage defibrillating signals and signal monitoring means for monitoring signals indicating heart activity, a first electrode system for selectively applying defibrillating signals to a patient and for selectively applying monitoring signals to the means for monitoring signals, and a second electrode system for selectively applying monitoring signals to the means for monitoring signals, said means for monitoring signals include a first isolation amplifier, switch means for selectively applying monitoring signals to said first isolation amplifier alternatively from said first electrode system or from said second electrode system, the improvement comprising a second isolation amplifier coupled intermediate said first electrode system and said switch means, whereby to prevent current leakage between said first electrode system and said second electrode system during application of a defibrillating signal.
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Accused Products
Abstract
In a defibrillator/monitor having first electrodes for applying the defibrillating signal and second electrodes for monitoring physiological conditions and switch means for connecting the active leads to the defibrillator monitor through an isolation amplifier the inclusion of additional isolation amplification means intermediate the defibrillating electrodes and the switch means to prevent current leakage between the two electrode systems during the application of the defibrillating signal.
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Citations
7 Claims
- 1. In a heart defibrillating and monitoring system having a source of high-voltage defibrillating signals and signal monitoring means for monitoring signals indicating heart activity, a first electrode system for selectively applying defibrillating signals to a patient and for selectively applying monitoring signals to the means for monitoring signals, and a second electrode system for selectively applying monitoring signals to the means for monitoring signals, said means for monitoring signals include a first isolation amplifier, switch means for selectively applying monitoring signals to said first isolation amplifier alternatively from said first electrode system or from said second electrode system, the improvement comprising a second isolation amplifier coupled intermediate said first electrode system and said switch means, whereby to prevent current leakage between said first electrode system and said second electrode system during application of a defibrillating signal.
Specification