External defibrillation with automatic post-shock anti-tachycardia (APSAT) pacing based on pre-shock ECG
First Claim
1. An external medical device that facilitates delivery of electrical energy to a patient, the external medical device comprising:
- a housing external to the patient;
an energy storage module within the housing, the energy storage module configured to store electrical energy;
a processor configured to determine whether defibrillation is advised for the patient by performing an analysis of an ECG of the patient and, if so, the processor being further configured to control a delivery of the stored electrical energy to the patient, the delivery being controlled so that;
a first portion of the stored electrical energy is delivered as a defibrillation shock that has an energy level of at least 50 J, anda second portion of the stored electrical energy is delivered after the defibrillation shock as one or more pacing pulses, at least one of the one or more pacing pulses having an energy of at most 4.8 J, an energy of at least one of the one or more pacing pulses being based upon the performed analysis of the ECG of the patient.
6 Assignments
0 Petitions
Accused Products
Abstract
A medical device such as an external defibrillator delivers electrical therapy using a special pulse sequence. The special pulse sequence includes a defibrillation shock that is automatically followed by a quick succession of automatic post-shock anti-tachycardia (APSAT) pacing pulses. Because of the pacing pulses, the defibrillation shock can be of lesser energy than an equivalent defibrillation shock of a larger energy. Accordingly, the external defibrillator can be made physically smaller and weigh less, without sacrificing the therapeutic effect of a larger external defibrillator that would deliver a defibrillation shock of higher energy. As such, the defibrillator is easier to configure for transporting, handling, and even wearing.
48 Citations
21 Claims
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1. An external medical device that facilitates delivery of electrical energy to a patient, the external medical device comprising:
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a housing external to the patient; an energy storage module within the housing, the energy storage module configured to store electrical energy; a processor configured to determine whether defibrillation is advised for the patient by performing an analysis of an ECG of the patient and, if so, the processor being further configured to control a delivery of the stored electrical energy to the patient, the delivery being controlled so that; a first portion of the stored electrical energy is delivered as a defibrillation shock that has an energy level of at least 50 J, and a second portion of the stored electrical energy is delivered after the defibrillation shock as one or more pacing pulses, at least one of the one or more pacing pulses having an energy of at most 4.8 J, an energy of at least one of the one or more pacing pulses being based upon the performed analysis of the ECG of the patient. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An external medical device that facilitates delivery of electrical energy to a patient, the external medical device comprising:
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a housing external to the patient; an energy storage module within the housing, the energy storage module configured to store electrical energy; a processor configured to determine whether defibrillation is advised for the patient by performing an analysis of an ECG of the patient and, if so, the processor being further configured to control a delivery of the stored electrical energy to the patient, the delivery being controlled so that; a first portion of the stored electrical energy is delivered as a defibrillation shock that has an energy level of at least 50 J, and a second portion of the stored electrical energy is delivered after the defibrillation shock as a sequence of two or more pacing pulses, at least one of the two or more pacing pulses having an energy of at most 4.8 J, an inter-pulse time duration between two successive ones of the two or more pacing pulses being based upon the performed analysis of the ECG of the patient. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An external medical device that facilitates delivery of electrical energy to a patient, the external medical device comprising:
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a housing external to the patient; an energy storage module within the housing, the energy storage module configured to store electrical energy; a processor configured to determine whether defibrillation is advised for the patient by performing an analysis of an ECG of the patient and, if so, the processor being further configured to control a delivery of the stored electrical energy to the patient, the delivery being controlled so that; a first portion of the stored electrical energy is delivered as a defibrillation shock that has an energy level of at least 50 J, and a second portion of the stored electrical energy is delivered after the defibrillation shock as one or more pacing pulses, the first one of the one or more pacing pulses being delivered automatically after the first portion of the stored electrical energy has been delivered and without any further analysis of an ECG of the patient after the first portion of the stored electrical energy has been delivered. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification