Delay to therapy following patient controlled atrial shock therapy request
First Claim
1. An implantable medical device comprising:
- a signal detector to provide cardiac activity signals;
an atrial cardioverter/defibrillator to deliver an electrical energy;
a processor, coupled to the signal detector and the atrial cardioverter/defibrillator, to control the delivery of the electrical energy, the processor adapted to initiate a delay period in response to a therapy request from an external device and initiate a delivery of the electrical energy after the delay period expires, the processor adapted to detect the therapy request upon receipt of a request for at least a therapy request threshold duration; and
a programmable delay timer, coupled to the processor, to time the delay period from the therapy request detection.
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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
38 Claims
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1. An implantable medical device comprising:
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a signal detector to provide cardiac activity signals; an atrial cardioverter/defibrillator to deliver an electrical energy; a processor, coupled to the signal detector and the atrial cardioverter/defibrillator, to control the delivery of the electrical energy, the processor adapted to initiate a delay period in response to a therapy request from an external device and initiate a delivery of the electrical energy after the delay period expires, the processor adapted to detect the therapy request upon receipt of a request for at least a therapy request threshold duration; and a programmable delay timer, coupled to the processor, to time the delay period from the therapy request detection. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A 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 electrical energy; an implantable device processor coupled to the signal detector and the atrial cardioverter/defibrillator, to control the delivery of the electrical energy, the implantable device processor adapted to initiate a delay period in response to an external therapy request and initiate a delivery of the electrical energy after the delay period expires, the processor adapted to detect the therapy request upon receipt of a request for at least a therapy request threshold duration; and a programmable delay timer, coupled to the processor, to time the delay period from the therapy request detection; and an external activator adapted to communicate the external request to the implantable device. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An implantable atrial cardioverter/defibrillator comprising:
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means for receiving a therapy request from an external device; means for detecting a therapy request duration greater than a therapy request threshold duration; means for initiating a predetermined delay period upon detecting the request; and means for delivering an atrial shock after the predetermined delay period expires. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. An activator adapted for communicating with an implantable medical device producing an audio tone representing a message, the activator comprising:
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a magnet to create a magnetic field detectable by the implantable medical device; a tone detector to detect the audio tone; a processor, coupled to the tone detector, to decode the audio tone; and a display, coupled to the processor, to present the message. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A method for delivering an atrial shock, the method comprising:
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detecting a magnetic field indicative of a request for the atrial shock; timing a duration during which the magnetic field is detected; initiating a delay period when the duration exceeds a predetermined threshold; and delivering the atrial shock after the delay period expires. - View Dependent Claims (36, 37, 38)
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Specification