摘要:
The invention relates to a defibrillator comprising an output stage, which is controlled by a control circuit (3) for emitting a biphasic defibrillation pulse and which has an H-bridge (2) between a positive pole and a negative pole of an energy accumulator device (1). A patient electric circuit is provided in the shunt arm (QZ) having at least one inductive resistor (L1). The aim of the invention is to achieve a reliable functioning of the defibrillator. To this end, the invention provides that in order to regulate the patient current (IP) in one direction, only the switching element (S3), which is assigned to this current direction and which is located in the H-limb (D-C) that points toward the negative pole, is controlled with the higher frequency, whereas in order to regulate the patient current (IP) in the other direction, only the switching element (S1), which is assigned to this other current direction and which is located in the H-limb (D-A) that points toward the positive pole, is controlled with the higher frequency, and the invention provides that at least one diode (DII, DI) is arranged in an antiparallel manner with regard to the switching elements (S3, S1), which are controlled with the higher frequency, so that via this/these diode(s) and the switching element (S2, S4), which is constantly closed in the respective phase, the patient current (IP) is maintained in its respective direction.
摘要:
An external automatic defibrillator including an attachment device that can be externally attached and carried by a patient, an identification device for detecting an abnormal event in the cardiac activity, which can be treated by an electric shock, as well as a defibrillator allowing to exert a shock upon the patient after having detected the abnormal event. In order to ensure reliable functioning over a longer period of time, the identification device is configured so that the identification device can detect an abnormal event in an interval of not more than 90 seconds or one minute.
摘要:
The invention relates to a defibrillator comprising an output stage that has a high-voltage section (1, 2) and patient electrode connections (PEA), which can be automatically connected by a coupling circuit (3) to said high-voltage section via a relay (3.1), and has a relay testing device. A reliable functioning of the defibrillator is ensured due to the provision of a discharging resistor device (RD), which can be automatically switched to instead of the patient electrode connections (PEA) by means of the relay (3.1), and by virtue of the fact that the relay testing device is designed for testing the relay (3.1) while involving the state of the adjacent discharging resistor device (RD).
摘要:
The invention relates to a defibrillator comprising an output stage, which is controlled by a control circuit (3) for emitting a biphasic defibrillation pulse and which has an H-bridge (2) between a positive pole and a negative pole of an energy accumulator device (1). A patient electric circuit is provided in the shunt arm (QZ) having at least one inductive resistor (L1). The aim of the invention is to achieve a reliable functioning of the defibrillator. To this end, the invention provides that in order to regulate the patient current (IP) in one direction, only the switching element (S3), which is assigned to this current direction and which is located in the H-limb (D-C) that points toward the negative pole, is controlled with the higher frequency, whereas in order to regulate the patient current (IP) in the other direction, only the switching element (S1), which is assigned to this other current direction and which is located in the H-limb (D-A) that points toward the positive pole, is controlled with the higher frequency, and the invention provides that at least one diode (DII, DI) is arranged in an antiparallel manner with regard to the switching elements (S3, S1), which are controlled with the higher frequency, so that via this/these diode(s) and the switching element (S2, S4), which is constantly closed in the respective phase, the patient current (IP) is maintained in its respective direction.
摘要:
The invention relates to a method for verifying the operability of a defibrillator that is to be used externally. According to the method, different test processes are initiated and carried out from a non-operating mode (1). These test processes comprise a start test (3), which verifies the operation of a program memory device (S2), a main memory device and of an operating system (S8), and comprise a short test (4), which is carried out after the start test and which verifies the operation of essential defibrillation components.
摘要:
An external automatic defibrillator including an attachment device that can be externally attached and carried by a patient, an identification device for detecting an abnormal event in the cardiac activity, which can be treated by an electric shock, as well as a defibrillator allowing to exert a shock upon the patient after having detected the abnormal event. In order to ensure reliable functioning over a longer period of time, the identification device is configured so that the identification device can detect an abnormal event in an interval of not more than 90 seconds or one minute.
摘要:
The invention relates to a defibrillator comprising an output stage that has a high-voltage section (1, 2) and patient electrode connections (PEA), which can be automatically connected by a coupling circuit (3) to said high-voltage section via a relay (3.1), and has a relay testing device. A reliable functioning of the defibrillator is ensured due to the provision of a discharging resistor device (RD), which can be automatically switched to instead of the patient electrode connections (PEA) by means of the relay (3.1), and by virtue of the fact that the relay testing device is designed for testing the relay (3.1) while involving the state of the adjacent discharging resistor device (RD).
摘要:
The invention relates to a method for verifying the operability of a defibrillator that is to be used externally. According to the method, different test processes are initiated and carried out from a non-operating mode (1). These test processes comprise a start test (3), which verifies the operation of a program memory device (S2), a main memory device and of an operating system (S8), and comprise a short test (4), which is carried out after the start test and which verifies the operation of essential defibrillation components.