ELECTROMAGNETIC INTERFERENCE ALARM
First Claim
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1. An implantable medical device, comprising:
- a sensor responsive to physiologic conditions of a patient;
therapy delivery circuitry coupled to the sensor and providing therapy in response to the sensed physiologic conditions;
a detector coupled to the sensor and detecting electromagnetic interference and providing a signal indicating the present magnitude of the detected electromagnetic interference;
an alarm perceptible to the patient and coupled to the detector, activated responsive to the signal indicating that the present magnitude of the detected electromagnetic interference exceeds a defined threshold; and
control circuitry coupled to the alarm and the sensor ceasing activation of the alarm responsive to the signal indicating that the present magnitude of the detected electromagnetic interference is below the defined threshold.
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Abstract
An apparatus and method are disclosed including an implantable medical device electrically coupled to a patient, having a sensor for sensing physiologic conditions and circuitry coupled to the sensor for emitting therapy in response to sensed physiologic conditions. A detector is coupled to the cardiac device for detecting the presence of electromagnetic interference and the intensity thereof and an alarm is coupled to the detector to signal the patient of the implantable medical device of the presence of electromagnetic interference.
7 Citations
16 Claims
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1. An implantable medical device, comprising:
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a sensor responsive to physiologic conditions of a patient; therapy delivery circuitry coupled to the sensor and providing therapy in response to the sensed physiologic conditions; a detector coupled to the sensor and detecting electromagnetic interference and providing a signal indicating the present magnitude of the detected electromagnetic interference; an alarm perceptible to the patient and coupled to the detector, activated responsive to the signal indicating that the present magnitude of the detected electromagnetic interference exceeds a defined threshold; and control circuitry coupled to the alarm and the sensor ceasing activation of the alarm responsive to the signal indicating that the present magnitude of the detected electromagnetic interference is below the defined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of increasing safety of a patient having an implantable medical device, wherein the device comprises:
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a sensor responsive to physiologic conditions of a patient; therapy delivery circuitry coupled to the sensor and providing therapy in response to the sensed physiologic conditions; a detector coupled to the sensor and detecting electromagnetic interference and providing a signal indicating the present magnitude of the detected electromagnetic interference; and a patient perceptible alarm, the method comprising; activating the alarm perceptible to the patient responsive to the signal indicating that the present magnitude of the detected electromagnetic interference exceeds a defined threshold; and ceasing activation of the alarm responsive to the signal indicating that the present magnitude of the detected electromagnetic interference is below the defined threshold. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification