Patent ID: 6597950
Filing Date: 2003-07-22
Classification: A61N

Abstract:
An apparatus, comprising:a defibrillation electrode; a test current source coupled to the defibrillation electrode; a voltage measurement circuit coupled to the defibrillation electrode; a defibrillation output supply coupled to the defibrillation electrode; a control circuit coupled to the test current source, the voltage measurement circuit and the defibrillation output supply, the control circuit having test and defibrillation configurations, wherein, when the control circuit is in the test configuration, the control circuit is configured to cause the test current source to source a test current to the defibrillation electrode and to cause the voltage measurement circuit to measure a voltage at the defibrillation electrode and, when the control circuit is in the defibrillation configuration, the control circuit is configured to cause the defibrillation output supply to supply a defibrillation voltage to the defibrillation electrode; and a second defibrillation electrode and a test current sink coupled to the second defibrillation electrode, wherein, when the control circuit is in the test configuration, the test current is sunk by the test current sink.