Patent ID: 9126046
Filing Date: 2015-09-08
Classification: A61N

Abstract:
1. An implantable medical device capable of being placed in a first operational mode and in a second operational mode, comprising: a magnetic field sensing device configured for outputting a signal in response to sensing a magnetic field; a logic circuit configured for receiving the signal from the magnetic field sensing device, wherein, in response to the signal from the magnetic field sensing device, the logic circuit is configured for continuously asserting the signal during a first time period when the medical device is in the first operational mode, and intermittently asserting the signal during at least one second time period when the medical device is in the second operational mode, wherein the first time period is greater than the second time period; a delay circuit configured for receiving the asserted signal from the logic circuit and introducing a time delay into the asserted signal, the time delay being less than the first time period, but greater than each of the at least one second time period; and control circuitry configured for receiving the delayed signal from the delay circuit and performing a function in response to receiving the delayed signal at a first input terminal.