Delay to therapy following controlled atrial shock therapy request
First Claim
1. An implantable device for providing atrial shock therapy controllable by a patient using an external activator, the implantable device comprising:
- an atrial arrhythmia detector to detect an atrial arrhythmia;
an atrial cardioverter/defibrillator to provide an atrial shock;
a receiver/transmitter to receive a patient therapy request and a delay period from the external activator via a telemetry link; and
a processor adapted to time the delay period between receipt of the patient therapy request by the receiver/transmitter and providing the atrial shock and control the atrial cardioverter/defibrillator to provide the atrial shock upon expiration of the delay period in response to the patient therapy request being a request for a delayed atrial shock therapy, and to control the atrial cardioverter/defibrillator to provide the atrial shock, without timing the delay period, in response to the patient therapy request being a request for an immediate atrial shock therapy.
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Accused Products
Abstract
An implantable cardiac device detects a patient therapy request originating from external to the implantable device. A shock therapy delay period is timed in response to the detection of the patient therapy request. Atrial shock therapy is provided to the patient after expiration of the shock therapy delay period (if the presence of an ongoing atrial arrhythmia is detected). The patient therapy request may be provided by a patient activator including a magnet for operating a reed switch in the implanted device to provide the request. A patient activator including an input and receiver/transmitter circuitry may be employed to request the immediate providing of atrial shock therapy, and/or to set the duration the shock therapy delay period. By allowing specific delays to therapy after a therapy request, a patient can prepare for the requested therapy and thereby mitigate therapy discomfort.
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Citations
17 Claims
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1. An implantable device for providing atrial shock therapy controllable by a patient using an external activator, the implantable device comprising:
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an atrial arrhythmia detector to detect an atrial arrhythmia; an atrial cardioverter/defibrillator to provide an atrial shock; a receiver/transmitter to receive a patient therapy request and a delay period from the external activator via a telemetry link; and a processor adapted to time the delay period between receipt of the patient therapy request by the receiver/transmitter and providing the atrial shock and control the atrial cardioverter/defibrillator to provide the atrial shock upon expiration of the delay period in response to the patient therapy request being a request for a delayed atrial shock therapy, and to control the atrial cardioverter/defibrillator to provide the atrial shock, without timing the delay period, in response to the patient therapy request being a request for an immediate atrial shock therapy. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for patient controllable atrial shock therapy, the system comprising:
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an implantable device including; a signal detector to provide cardiac activity signals; an atrial cardioverter/defibrillator to deliver an atrial shock; an implantable device processor, coupled to the signal detector and the atrial cardioverter/defibrillator, to control the delivery of the atrial shock in response to a patient therapy request, the implantable device processor adapted to time a delay period upon receipt of the patient therapy request and initiate a delivery of the atrial shock upon expiration of the delay period in response to the patient therapy request being a request for a delayed atrial shock therapy, and to initiate the delivery of the atrial shock, without timing the delay period, in response to the patient therapy request being a request for an immediate atrial shock therapy; and an implantable device receiver/transmitter to receive the patient therapy request and the delay period via a telemetry link; and an external patient activator including; patient input circuitry to receive the patient therapy request and the delay period; and an activator receiver/transmitter to transmit the patient therapy request and the delay period to the implantable device receiver/transmitter via the telemetry link. - View Dependent Claims (8, 9, 10)
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11. A method for operating an implantable cardiac device, the method comprising:
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detecting an atrial arrhythmia using the implantable cardiac device; receiving an external patient therapy request and a delay period transmitted from an external activator to the implantable cardiac device via a telemetry link; timing the delay period and providing an atrial shock upon expiration of the delay period in response to the patient therapy request being a request for a delayed atrial shock therapy; and providing the atrial shock, without timing the delay period, in response to the patient therapy request being a request for an immediate atrial shock therapy. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification