Subcutaneous cardiac stimulator employing post-shock transthoracic asystole prevention pacing
First Claim
1. A method of providing subcutaneous cardiac stimulation, comprising:
- detecting cardiac asystole subsequent to delivery of a defibrillation therapy, energy for the defibrillation therapy provided by a subcutaneous defibrillation energy storage source; and
transthoracicly delivering a pacing therapy to terminate the detected cardiac asystole using residual energy from the defibrillation energy storage source.
1 Assignment
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Accused Products
Abstract
Transthoracic cardiac stimulation therapies provide for detection and treatment of cardiac asystole subsequent to delivery of a defibrillation therapy. A pacing therapy is transthoracicly delivered to terminate detected cardiac asystole using residual energy from a defibrillation energy storage source. The residual energy usable for the pacing therapy is sufficient to transthoracicly deliver at least one pacing pulse, and is typically sufficient to deliver a series of pacing pulses, prior to depletion of the defibrillation energy storage source. Detection of cardiac asystole is performed following delivery of each pacing pulse, and subcutaneous pacing support is terminated in response to detecting cardiac asystole termination.
110 Citations
96 Claims
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1. A method of providing subcutaneous cardiac stimulation, comprising:
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detecting cardiac asystole subsequent to delivery of a defibrillation therapy, energy for the defibrillation therapy provided by a subcutaneous defibrillation energy storage source; and
transthoracicly delivering a pacing therapy to terminate the detected cardiac asystole using residual energy from the defibrillation energy storage source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of providing subcutaneous cardiac stimulation, comprising:
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detecting cardiac asystole subsequent to delivery of a defibrillation therapy; and
transthoracicly delivering a non-physiologic, life sustaining pacing therapy to terminate the detected cardiac asystole. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of providing subcutaneous cardiac stimulation, comprising:
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detecting cardiac asystole subsequent to delivery of a defibrillation therapy; and
transthoracicly delivering a life sustaining pacing therapy at a rate insufficient to restore full patient consciousness to terminate the detected cardiac asystole. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43)
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44. A method of providing subcutaneous cardiac stimulation, comprising:
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transthoracicly delivering a pacing therapy in response to detecting a condition necessitating pacing therapy delivery, energy for the pacing therapy delivery provided by a subcutaneous cardioversion/defibrillation energy storage source; and
delivering a cardioversion or defibrillation therapy in response to detecting a cardiac arrhythmia necessitating the cardioversion or defibrillation therapy, energy for the cardioversion or defibrillation therapy provided by the subcutaneous cardioversion/defibrillation energy storage source. - View Dependent Claims (45, 46)
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47. An apparatus for providing subcutaneous cardiac stimulation, comprising:
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a housing;
energy delivery circuitry provided in the housing, the energy delivery circuitry comprising a defibrillation energy storage source;
first and second electrodes respectively coupled to the energy delivery circuitry and arranged in a spaced relationship with respect to cardiac tissue and vasculature for transthoracic cardiac sensing and energy delivery; and
detection/control circuitry provided in the housing and coupled to the energy delivery circuitry, the detection/control circuitry detecting cardiac asystole subsequent to delivery of a defibrillation therapy and transthoracicly delivering a pacing therapy via the energy delivery circuitry to terminate the detected cardiac asystole using residual energy from the defibrillation energy storage source. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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72. An apparatus for providing subcutaneous cardiac stimulation, comprising:
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a housing;
energy delivery circuitry provided in the housing;
first and second electrodes respectively coupled to the energy delivery circuitry and arranged in a spaced relationship with respect to cardiac tissue and vasculature for transthoracic cardiac sensing and energy delivery; and
a detection/control circuitry provided in the housing and coupled to the energy delivery circuitry, the detection/control circuitry detecting cardiac asystole subsequent to delivery of a defibrillation therapy and transthoracicly delivering a non-physiologic, life sustaining pacing therapy to terminate the detected cardiac asystole. - View Dependent Claims (73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
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88. An apparatus for providing subcutaneous cardiac stimulation, comprising:
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means for detecting cardiac asystole subsequent to delivery of a defibrillation therapy;
means for providing energy for the defibrillation therapy, the providing means comprising a subcutaneous defibrillation energy storage source; and
means for transthoracicly delivering a pacing therapy to terminate the detected cardiac asystole using residual energy from the defibrillation energy storage source. - View Dependent Claims (89, 90)
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91. An apparatus for providing subcutaneous cardiac stimulation, comprising:
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means for detecting cardiac asystole subsequent to delivery of a defibrillation therapy; and
means for transthoracicly delivering a non-physiologic, life sustaining pacing therapy to terminate the detected cardiac asystole. - View Dependent Claims (92, 93)
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94. An apparatus for providing subcutaneous cardiac stimulation, comprising:
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means for detecting a cardiac arrhythmia necessitating a cardioversion or defibrillation therapy;
means for providing energy for the cardioversion or defibrillation therapy, the providing means comprising a subcutaneous cardioversion/defibrillation energy storage source;
means for delivering the cardioversion or defibrillation therapy in response to the detecting means detecting the cardiac arrhythmia;
means for detecting a condition necessitating pacing therapy delivery; and
means for transthoracicly delivering a pacing therapy using residual energy from the defibrillation energy storage source in response to detecting the condition necessitating pacing therapy delivery. - View Dependent Claims (95, 96)
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Specification