Wearable cardiac defibrillator (WCD) system controlling conductive fluid deployment per impedance settling at terminal value
First Claim
1. A wearable defibrillator system, comprising:
- a support structure configured to be worn by a patient;
an energy storage module configured to store a charge;
two electrodes coupled with the support structure and configured to be applied to two respective patient locations of the patient;
an impedance measurement circuit configured to sense an impedance between the two electrodes;
a reservoir coupled to the support structure and configured to store a fluid; and
a fluid deploying mechanism configured to cause at least some of the stored fluid to be released from the reservoir and to be deployed near at least one of the patient locations, so as to cause the impedance sensed by the measurement circuit to be decreased, andin which the stored charge is delivered to the patient locations via the electrodes after the sensed impedance has a value that changes less than a threshold in a given amount of time.
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Accused Products
Abstract
In embodiments, a wearable cardiac defibrillator system includes an energy storage module configured to store a charge. Two electrodes can be configured to be applied to respective locations of a patient. One or more reservoirs can store one or more conductive fluids. Respective fluid deploying mechanisms can be configured to cause the fluids to be released from one or more of the reservoirs, which decreases the impedance at the patient location, and decreases discomfort for the patient. In some embodiments an impedance is sensed between the two electrodes, and the stored charge is delivered when the sensed impedance meets a discharge condition. In some embodiments, different fluids are released for different patient treatments. In some embodiments, fluid release is controlled to be in at least two doses, with an intervening pause.
79 Citations
18 Claims
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1. A wearable defibrillator system, comprising:
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a support structure configured to be worn by a patient; an energy storage module configured to store a charge; two electrodes coupled with the support structure and configured to be applied to two respective patient locations of the patient; an impedance measurement circuit configured to sense an impedance between the two electrodes; a reservoir coupled to the support structure and configured to store a fluid; and a fluid deploying mechanism configured to cause at least some of the stored fluid to be released from the reservoir and to be deployed near at least one of the patient locations, so as to cause the impedance sensed by the measurement circuit to be decreased, and in which the stored charge is delivered to the patient locations via the electrodes after the sensed impedance has a value that changes less than a threshold in a given amount of time. - View Dependent Claims (2, 3, 4, 5, 6, 16)
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7. A non-transitory computer-readable storage medium storing one or more programs which, when executed by a defibrillator system including an energy storage module, an impedance measurement circuit, two electrodes configured to be applied to two respective patient locations of a patient, a reservoir containing a fluid, and a fluid deploying mechanism, they result in operations comprising:
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storing a charge; causing at least some of the contained fluid to be released from the reservoir and to be deployed near at least one of the patient locations, so as to cause an impedance between the two electrodes to be decreased; sensing the impedance; and causing the stored charge to be delivered to the patient locations via the electrodes after the sensed impedance has a value that changes less than a threshold in a given amount of time. - View Dependent Claims (8, 9, 10, 17)
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11. A method for a defibrillator system including an energy storage module, an impedance measurement circuit, two electrodes configured to be applied to two respective patient locations of a patient, a reservoir containing a fluid, and a fluid deploying mechanism, the method comprising:
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storing a charge; causing at least some of the contained fluid to be released from the reservoir and to be deployed near at least one of the patient locations, so as to cause an impedance between the two electrodes to decrease; sensing the impedance; and causing the stored charge to be delivered to the patient locations via the electrodes after the sensed impedance has a value that changes less than a threshold in a given amount of time. - View Dependent Claims (12, 13, 14, 15, 18)
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Specification