Delay to therapy following patient controlled atrial shock therapy request
First Claim
1. An external activator for communicating with an implantable cardiac device, the activator comprising:
- patient input circuitry adapted to receive a patient request for a delayed delivery of an atrial shock, a patient request for an immediate delivery of the atrial shock, and a patient request for withholding the delayed delivery of the atrial shock, wherein the delayed delivery includes delivery of the atrial shock upon expiration of a delay period timed in response to the patient request, and the immediate delivery includes delivery of the atrial shock without timing the delay period;
a processor to generate a command signal in response to each of the patient request for the delayed delivery of the atrial shock, the patient request for the immediate delivery of the atrial shock, and the patient request for withholding the delayed delivery of the atrial shock; and
a receiver/transmitter to transmit the command signal to the implantable cardiac device via a telemetry link.
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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
20 Claims
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1. An external activator for communicating with an implantable cardiac device, the activator comprising:
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patient input circuitry adapted to receive a patient request for a delayed delivery of an atrial shock, a patient request for an immediate delivery of the atrial shock, and a patient request for withholding the delayed delivery of the atrial shock, wherein the delayed delivery includes delivery of the atrial shock upon expiration of a delay period timed in response to the patient request, and the immediate delivery includes delivery of the atrial shock without timing the delay period; a processor to generate a command signal in response to each of the patient request for the delayed delivery of the atrial shock, the patient request for the immediate delivery of the atrial shock, and the patient request for withholding the delayed delivery of the atrial shock; and a receiver/transmitter to transmit the command signal to the implantable cardiac device via a telemetry link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 20)
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11. A method for operating an external activator adapted to communicate with an implantable cardiac device, the method comprising:
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receiving a first patient request for a delayed delivery of an atrial shock using input circuitry of the external activator, the delayed delivery including delivery of the atrial shock upon expiration of a delay period timed in response to the first patient request; generating a first command signal in response to the first patient request; transmitting the first command signal to the implantable cardiac device via a telemetry link; receiving a second patient request for withholding the delayed delivery of the atrial shock using the input circuitry of the external activator; generating a second command signal in response to the second patient request; transmitting the second command signal to the implantable cardiac device via the telemetry link; receiving a third patient request for an immediate atrial shock using the input circuitry of the external activator, the immediate delivery including delivery of the atrial shock without timing the delay period; generating a third command signal in response to the third patient request; and transmitting the third command signal to the implantable cardiac device via the telemetry link. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification