Patient-worn energy delivery apparatus
First Claim
1. A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition, the apparatus comprising:
- a. a voltage converter for converting electrical energy from an initial voltage to a final voltage, the converter converting the energy at a plurality of charging rates, the converter including an inductive-boost generator having an output voltage level;
b. a defibrillator adapted to be electrically coupled between the converter and the patient, the defibrillator having an energy reservoir for receiving the electrical energy at the plurality of charging rates from the converter, the defibrillator producing preshaped electrical pulses therefrom, the electrical pulses being one of defibrillation pulses and cardioversion pulses; and
c. an energy delivery controller adapted to be electrically coupled to the patient and the converter and the defibrillator, the controller causing the converter to provide the electrical energy to the defibrillator at selected ones of the plurality of charging rates, the controller causing the defibrillator to apply a selectable portion of the electrical energy in the form of one of the defibrillation pulses and the cardioversion pulses to the body of the patient, responsive to the occurrence of the treatable condition.
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Accused Products
Abstract
The present invention provides for a patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition. The apparatus includes a voltage converter for converting electrical energy from an initial voltage to a final voltage at a plurality of charging rates, and a defibrillator electrically coupled between the converter and the patient and having an energy reservoir for receiving the electrical energy. The defibrillator produces preshaped electrical pulses such as defibrillation pulses and cardioversion pulses. The apparatus additionally includes an energy delivery controller electrically coupled to the patient and the converter and the defibrillator. The controller causes the converter to provide the electrical energy to the defibrillator at a specific charging rate in response to an energy level in the reservoir. The apparatus may include a plurality of electrodes interposed between the defibrillator and the patient and each electrode preferably has an impedance reducing means contained therein. One embodiment of the apparatus may include a H-bridge to produce a positive-going pulse segment and the negative-going pulse segment within the biphasic exponential signals.
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Citations
32 Claims
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1. A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition, the apparatus comprising:
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a. a voltage converter for converting electrical energy from an initial voltage to a final voltage, the converter converting the energy at a plurality of charging rates, the converter including an inductive-boost generator having an output voltage level; b. a defibrillator adapted to be electrically coupled between the converter and the patient, the defibrillator having an energy reservoir for receiving the electrical energy at the plurality of charging rates from the converter, the defibrillator producing preshaped electrical pulses therefrom, the electrical pulses being one of defibrillation pulses and cardioversion pulses; and c. an energy delivery controller adapted to be electrically coupled to the patient and the converter and the defibrillator, the controller causing the converter to provide the electrical energy to the defibrillator at selected ones of the plurality of charging rates, the controller causing the defibrillator to apply a selectable portion of the electrical energy in the form of one of the defibrillation pulses and the cardioversion pulses to the body of the patient, responsive to the occurrence of the treatable condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence or a treatable condition, the apparatus comprising:
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a. a voltage converter for converting electrical energy from an initial voltage to a final voltage, the converter converting the energy at a plurality of charging rates, the converter including an inductive-boost generator having a first stage having a first stage output voltage and a second stage having a second stage output voltage; b. a defibrillator adapted to be electrically coupled between the converter and the patient, the defibrillator having an energy reservoir for receiving the electrical energy at the plurality of charging rates from the converter, the defibrillator producing preshaped electrical pulses therefrom, the electrical pulses being one of defibrillation pulses and cardioversion pulses; and c. an energy delivery controller adapted to be electrically coupled to the patient and the converter and the defibrillator, the controller causing the converter to provide the electrical energy to the defibrillator at selected ones of the plurality of charging rates, the controller causing the defibrillator to apply a selectable portion of the electrical energy in the form of one of the defibrillation pulses and the cardioversion pulses to the body of the patient, responsive to the occurrence of the treatable condition. - View Dependent Claims (16, 17, 18)
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19. A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition, the apparatus comprising:
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a a voltage converter for converting electrical energy from an initial voltage to a final voltage, the converter converting the energy at a plurality of charging rates, the converter including an inductive-boost generator having a first stage with a first stage output voltage level and a second stage with a second stage output voltage level; b. a defibrillator adapted to be electrically coupled between the converter and the patient, the defibrillator having an energy reservoir for receiving the electrical energy at the plurality of charging rates from the converter, the defibrillator producing preshaped electrical pulses therefrom, the electrical pulses being one of defibrillation pulses and cardioversion pulses; c. an energy delivery controller adapted to be electrically coupled to the patient and the converter and the defibrillator, the controller causing the converter to provide the electrical energy to the defibrillator at selected ones of the plurality of charging rates, the controller causing the defibrillator to apply a selectable portion of the electrical energy in the form of one of the defibrillation pulses and the cardioversion pulses to the body of the patient, responsive to the occurrence of the treatable condition; wherein each of the plurality of charging rates corresponds with a respective one of a plurality of duty cycles each of the plurality of duty cycles corresponding to a selected output voltage level; and wherein the plurality of duty cycles includes three duty cycles, the first duty cycle being about 9% when the first stage output voltage level is less than about 20 volts, the second duty cycle being about 42% when the first stage output voltage level is equal to or greater than about 20 volts and the second stage output voltage level is less than about 35 volts, and the third duty cycle is about 69% when the second stage output is equal to or greater than about 135 volts.
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20. A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition, the apparatus comprising:
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a. a voltage converter for converting electrical energy from an initial voltage to a final voltage, the converter converting the energy at a plurality of charging rates, the converter including an inductive-boost generator having; b. a defibrillator adapted to be electrically coupled between the converter and the patient, the defibrillator having an energy reservoir for receiving the electrical energy at the plurality of charging rates from the converter, the defibrillator producing preshaped electrical pulses therefrom, the electrical pulses being one of defibrillation pulses and cardioversion pulses; c. an energy delivery controller adapted to be electrically coupled to the patient and the converter and the defibrillator, the controller causing the converter to provide the electrical energy to the defibrillator at selected ones of the plurality of charging rates, the controller causing the defibrillator to apply a selectable portion of the electrical energy in the form of one of the defibrillation pulses and the cardioversion pulses to the body of the patient, responsive to the occurrence of the treatable condition; and a plurality of electrodes interposed between the defibrillator and the patient, the plurality of electrodes having a conductive surface adapted for placement adjacent the patient'"'"'s skin and having an impedance reducing means contained therein for reducing the impedance between the plurality of electrodes and the patient'"'"'s skin, the impedance reducing means being activated responsive to the occurrence of the treatable condition. - View Dependent Claims (21)
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22. A patient-worn energy delivery apparatus for imparting electrical therapy to the body of a patient responsive to an occurrence of a treatable condition, the apparatus comprising:
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a. a voltage converter converting electrical energy from an initial voltage to a final voltage at a plurality of charging rates, the converter including an inductive-boost generator having a first stage with a first stage voltage output, and a second stage with a second stage voltage output; b. a defibrillator adapted to be electrically coupled between the converter and the patient, the defibrillator having a plurality of capacitors being adapted to charge substantially in parallel and discharge substantially in series and the defibrillator producing preshaped electrical pulses, the electrical pulses being approximately exponentially-shaped pulses and the electrical pulses being one of defibrillation pulses and cardioversion pulses; and c. an energy delivery controller adapted to be electrically coupled to the patient and the converter and the defibrillator, the controller causing the converter to provide the electrical energy to the defibrillator, the controller causing the defibrillator to apply a selectable portion of the electrical energy in the form of one of the defibrillation pulses and the cardioversion pulses to the body of the patient responsive to the occurrence of the treatable condition, the selectable portion being determined by a voltage across selected ones of the plurality of capacitors and a pulse current. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification