Wearable cardiac defibrillator system controlling conductive fluid deployment
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;
a reservoir coupled to the support structure and configured to store a fluid;
a fluid deploying mechanism configured to cause at least some of the fluid to be released from the reservoir and be deployed near at least one of the patient locations, so as to cause an impedance between the two electrodes to be decreased; and
an impedance measurement circuit configured to sense the decreased impedance, andin which the stored charge is delivered to the patient via the electrodes responsive to a timeout threshold lapsing since at least some of the fluid has been caused to be released, or responsive to the sensed impedance meeting a discharge condition prior to the timeout threshold lapsing, the discharge condition being distinct from the timeout threshold lapsing, the stored charge thus being delivered to the patient responsive to the earlier of;
i) the timeout threshold lapsing, andii) the sensed impedance meeting the discharge condition prior to the timeout threshold lapsing.
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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.
82 Citations
21 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; a reservoir coupled to the support structure and configured to store a fluid; a fluid deploying mechanism configured to cause at least some of the fluid to be released from the reservoir and be deployed near at least one of the patient locations, so as to cause an impedance between the two electrodes to be decreased; and an impedance measurement circuit configured to sense the decreased impedance, and in which the stored charge is delivered to the patient via the electrodes responsive to a timeout threshold lapsing since at least some of the fluid has been caused to be released, or responsive to the sensed impedance meeting a discharge condition prior to the timeout threshold lapsing, the discharge condition being distinct from the timeout threshold lapsing, the stored charge thus being delivered to the patient responsive to the earlier of; i) the timeout threshold lapsing, and ii) the sensed impedance meeting the discharge condition prior to the timeout threshold lapsing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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 fluid, and a fluid deploying mechanism, they result in operations comprising:
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storing a charge; causing at least some of the fluid to be released from the reservoir and 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 decreased impedance; and causing the charge to be delivered to the patient via the electrodes responsive to a timeout threshold lapsing since at least some of the fluid has been caused to be released, or responsive to the sensed impedance meeting a discharge condition prior to the timeout threshold lapsing, the discharge condition being distinct from the timeout threshold lapsing, the stored charge thus being delivered to the patient responsive to the earlier of; i) the timeout threshold lapsing, and ii) the sensed impedance meeting the discharge condition prior to the timeout threshold lapsing. - View Dependent Claims (9, 10, 11, 12)
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13. 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 fluid, and a fluid deploying mechanism, the method comprising:
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storing a charge; causing at least some of the fluid to be released from the reservoir and 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 decreased impedance; and delivering the charge to the patient via the electrodes responsive to a timeout threshold lapsing since at least some of the fluid has been caused to be released, or responsive to the sensed impedance meeting a discharge condition prior to the timeout threshold lapsing, the discharge condition being distinct from the timeout threshold lapsing, the stored charge thus being delivered to the patient responsive to the earlier of; i) the timeout threshold lapsing, and ii) the sensed impedance meeting the discharge condition prior to the timeout threshold lapsing. - View Dependent Claims (14, 15, 16, 17, 18)
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19. 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; a reservoir coupled to the support structure and configured to store a fluid; a fluid deploying mechanism configured to cause at least some of the fluid to be released from the reservoir and be deployed near at least one of the patient locations, so as to cause an impedance between the two electrodes to be decreased; and an impedance measurement circuit configured to sense the decreased impedance, and in which the stored charge is delivered to the patient via the electrodes responsive to the earlier of; i) the sensed impedance having a value below a first threshold, and ii) a timeout threshold lapsing since at least some of the fluid has been caused to be released, even if the sensed impedance has a value above the first threshold. - View Dependent Claims (20, 21)
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Specification