Defibrillator circuit and electrodes therefor
First Claim
1. An electrical circuit for generating energy pulses at shock electrodes of a defibrillator, comprising an energy storage means comprising a plurality of capacitors for storing electrical energy, an operating switch between said capacitors and said shock electrodes, said operating switch being closable to discharge the stored energy from the storage means to the shock electrodes in the shock treatment of a patient, a shunt contact means which is connected in parallel with the energy storage means and to a junction on the output side of the operating switch and which is normally closed condition shunts the shock electrodes, means for opening said shunt contact means only for the duration of ths shock treatment, and inductance means, a generator as a power source for said inductance means, said inductance means being connected in series with said shunt contact means, whereby a monitoring voltage signal is produced at said shunt contact means responsive to a high-frequency voltage drop generated at said inductance means, which occurs only when said shunt contact means is closed, and a monitoring means for said monitoring voltage signal.
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Abstract
Defibrillator electrode and electrical circuit for generating pulses of energy at the electrodes of a defibrillator comprises an energy storage means, and a switch for supplying energy to the electrodes from the storage means, when the switch is closed. A shunt switch is connected in parallel with the energy storage means, and to a junction on the output side of the supply switch, to form a safety circuit. The shunt switch has a normally closed condition in which it shunts the electrodes, being opened only for the duration of the shock treatment.
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Citations
24 Claims
- 1. An electrical circuit for generating energy pulses at shock electrodes of a defibrillator, comprising an energy storage means comprising a plurality of capacitors for storing electrical energy, an operating switch between said capacitors and said shock electrodes, said operating switch being closable to discharge the stored energy from the storage means to the shock electrodes in the shock treatment of a patient, a shunt contact means which is connected in parallel with the energy storage means and to a junction on the output side of the operating switch and which is normally closed condition shunts the shock electrodes, means for opening said shunt contact means only for the duration of ths shock treatment, and inductance means, a generator as a power source for said inductance means, said inductance means being connected in series with said shunt contact means, whereby a monitoring voltage signal is produced at said shunt contact means responsive to a high-frequency voltage drop generated at said inductance means, which occurs only when said shunt contact means is closed, and a monitoring means for said monitoring voltage signal.
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23. An electrode for a defibrillator, comprising:
- a grip portion of manipulation of said electrode;
an applicator electrode portion adapted to be applied to a patient for defibrillation treatment;
supply means for supplying electrical pulse energy to said electrode portion from said defibrillator;
a protective electrode means disposed between said grip portion and said electrode portion, said protective electrode means comprising an electrode having an aperture through which passes a portion of said supply means for said electrode portion, said protective electrode means not being electrically connected to said supply means; and
means to electrically conductively connect said protective electrode means to a protective electrode means of a respective other defibrillator electrode. - View Dependent Claims (24)
- a grip portion of manipulation of said electrode;
Specification