METHODS AND IMPLANTABLE MEDICAL SYSTEMS THAT IMPLEMENT EXPOSURE MODES OF THERAPY THAT ALLOW FOR CONTINUED OPERATION DURING EXPOSURE TO A MAGNETIC DISTURBANCE
Hyun J. YOON,Wade M. DEMMER,Matthew J. HOFFMAN,Robert A. BETZOLD,Jonathan D. EDMONSON,Michael L. ELLINGSON,Mark K. ERICKSON,Ben W. HERBERG,Juliana E. PRONOVICI,James D. REINKE,Todd J. SHELDON,Paul R.
申请号：
US16600751
公开号：
US20200038665A1
申请日:
2019.10.14
申请国别(地区):
US
年份:
2020
代理人:
摘要：
Implantable medical systems enter an exposure mode of operation, either manually via a down linked programming instruction or by automatic detection by the implantable system of exposure to a magnetic disturbance. A controller then determines the appropriate exposure mode by considering various pieces of information including the device type including whether the device has defibrillation capability, pre-exposure mode of therapy including which chambers have been paced, and pre-exposure cardiac activity that is either intrinsic or paced rates. Additional considerations may include determining whether a sensed rate during the exposure mode is physiologic or artificially produced by the magnetic disturbance. When the sensed rate is physiologic, then the controller uses the sensed rate to trigger pacing and otherwise uses asynchronous pacing at a fixed rate.
