Patent ID: 6963779
Filing Date: 2005-11-08
Classification: A61N

Abstract:
1. An implantable cardiac stimulation device that provides electrical stimulation to a patient's heart, the device comprising: a power supply; a pulse generating circuit that produces the electrical stimulation; a magnetic enablement circuit that provides a signal when detecting an external magnetic field, wherein at least one parameter of the signal varies with a magnitude of the detected external magnetic field; a sensor device that senses heart function and provides a heart signal indicative thereof; a controller that receives the heart signal from the sensor device and induces the pulse generating circuit to provide the electrical stimulation when the controller determines that the heart is in need of the electrical stimulation, and wherein the controller receives the signal from the magnetic enablement circuit and, if the at least one parameter of the signal corresponds to a first value, the controller initiates a first preselected function, and if the at least one parameter of the signal corresponds to a second value, the controller initiates a second preselected function.