METHOD AND MEANS FOR BUILDING CARDIODEFIBRILLATION IMPULSE Russian patent published in 2005 - IPC

FIELD: medicine.

SUBSTANCE: method involves creating therapeutic circuit fixed on patient body, at least two working therapeutic electrodes, measuring and analyzing patient-dependent electrophysical parameters, charging capacitive storage and its later discharging to the working therapeutic electrodes controlled with control unit. Transmitting defibrillation impulse of given power in discharging is carried out in dosed manner first with the first portion W₁ of given power dose with the second portion W₂ being accumulated on inductive defibrillation power accumulator and then with the second portion W₂ of given power dose. Ratio of the first portion W₁ of given power dose to the second portion W₂ of given power dose of defibrillation impulse is selected from the range of 0.01 to 150. Defibrillation impulse current intensity is selected only when emitting the first portion W₁ of given power dose. Cardiodefibrillation impulse is built as bipolar Gurvich impulse. The given power quantity usable for charging the capacitive defibrillator storage is selected to be equal to a value from the range of 4-500 J, defibrillation impulse current intensity being selected from the range of 0.005 to 175 A and voltage equal to a value from 3 to 30000 V. Means has power supply source having unit for controlling charge level of the capacitive storage, unit for building defibrillation pulses, switchboards formed by controlled keys, at least two working therapeutic electrodes and diodes bypassing the controlled keys, resistive current transducer, analog-to-digital converter and control unit having required functional communications to the analog-to-digital converter and controlled keys. The resistive current transducer is in current feeding bus having minimum potential relative to measuring unit under operation having analog-to-digital converter in its structure.

EFFECT: enhanced effectiveness of usage; high safety of patient treatment procedure.

7 cl, 9 dwg