Patent application number | Description | Published |
20090132061 | SYSTEM AND METHOD FOR RECOVERING FROM TRANSIENT FAULTS IN AN IMPLANTABLE MEDICAL DEVICE - A system and method is disclosed for system fault recovery by an implantable medical device which employs a global fault response. The system enables the device to consistently recover from transient faults while maintaining a history of the reason for the device fault. Upon detection of a fault, the primary controller of the device signals a reset controller which then issues a reset command. All sub-systems of the primary device controller are then reset together rather than resetting individual sub-systems independently to ensure deterministic behavior. | 05-21-2009 |
20090157127 | TELEMETRY DURING SAFETY MODE OPERATION - This document discusses, among other things, n implantable device comprising a communication circuit configured to communicate with an external device, a logic circuit communicatively coupled to the communication circuit, and a processor, communicatively coupled to the logic circuit and the communication circuit. The processor is configured to communicate information with the external device, via the communication circuit and the logic circuit, using a set of communication messages. While in a device safety mode, the processor is held in an inactive state and the logic circuit is configured to communicate with the external device using a subset of the set of communication messages. | 06-18-2009 |
20100088539 | System and Method for Providing Fault Tolerant Processing in an Implantable Medical Device - Embodiments herein generally relate to implantable medical devices and, specifically, to a system and method for providing fault tolerant processing in an implantable medical device. In an embodiment a system for providing fault tolerant processing in an implantable medical device is provided. The system can include an implantable medical device comprising a processor and memory store configured to execute a plurality of threads, temporal and spatial constraints assigned to one or more of the threads, and a kernel. The kernel can include a scheduler and a thread monitor configured to monitor execution of threads against the temporal and spatial constraints, and further configured to issue a response upon violation of either of the constraints by one of the plurality of threads. In an embodiment a method for providing fault tolerant processing in an implantable medical device is provided. Other embodiments are also included herein. | 04-08-2010 |
20110046689 | CARDIAC PACEMAKER WITH PACING RATE MONITORING - A pacing monitoring system is described for incorporation in an implantable pacemaker that monitors the pacing rate and/or cumulative pace count in order to protect a patient from excessive pacing. The system includes monitoring circuitry that is configured to operate in multiple monitoring zones, where each zone is adapted to prevent excessively high-rate pacing during a particular mode of device operation. | 02-24-2011 |
20110137359 | IMPLANTABLE MEDICAL DEVICE WITH AUTOMATIC TACHYCARDIA DETECTION AND CONTROL IN MRI ENVIRONMENTS - An implantable medical device (IMD) includes a lead having one or more sensing electrodes and one or more therapy delivery electrodes, and a sensor configured to detect the presence of static and time-varying scan fields in a magnetic resonance imaging (MRI) environment. A controller, in electrical communication with the lead and the sensor, is configured to process signals related to tachycardia events sensed via the one or more sensing electrodes and to deliver pacing and shock therapy signals via the one or more therapy delivery electrodes. The controller compares the sensed static and time-varying scan fields to static and time-varying scan field thresholds. The controller controls delivery of anti-tachycardia pacing and shock therapy signals as a function of the detected tachycardia events, the comparison of the sensed static scan field to the static scan field threshold, and the comparison of the time-varying scan fields to the time-varying scan field thresholds. | 06-09-2011 |
20110145588 | SYSTEM AND METHOD TO AUTHORIZE RESTRICTED FUNCTIONALITY - Embodiments of the invention are related to medical systems and methods for controlling authorization of restricted functionality, amongst other things. In an embodiment, the invention includes a medical system including an external medical device programmer comprising control circuitry and a wireless communications module for sending instructions selected from a set of instructions wirelessly to a specific implanted medical device. In an embodiment, the external medical device programmer can be configured to initiate a transfer of verifying data to a remote key authority requesting permission if the user input directs delivery of restricted instructions to the specific implanted medical device, the verifying data including information regarding the specific implanted medical device. Other embodiments are also included herein. | 06-16-2011 |
20110160786 | IMPLANTABLE DEVICE FAILSAFE MODE FOR MRI - An implantable device, such as a pacer, defibrillator, or other cardiac rhythm management device, can include a failsafe backup, such as a separate and independent safety core that can assume control over operation of the implantable device from a primary controller. In an example, the safety core can include a normal first safety core operating mode and a magnetic resonance imaging (MRI) second safety core operating mode that can provide different functionality from the normal first safety core operating mode. | 06-30-2011 |
20140046390 | IMPLANTABLE MEDICAL DEVICE WITH AUTOMATIC TACHYCARDIA DETECTION AND CONTROL IN MRI ENVIRONMENTS - An implantable medical device (IMD) includes a lead having one or more sensing electrodes and one or more therapy delivery electrodes, and a sensor configured to detect the presence of static and time-varying scan fields in a magnetic resonance imaging (MRI) environment. A controller, in electrical communication with the lead and the sensor, is configured to process signals related to tachycardia events sensed via the one or more sensing electrodes and to deliver pacing and shock therapy signals via the one or more therapy delivery electrodes. The controller compares the sensed static and time-varying scan fields to static and time-varying scan field thresholds. The controller controls delivery of anti-tachycardia pacing and shock therapy signals as a function of the detected tachycardia events, the comparison of the sensed static scan field to the static scan field threshold, and the comparison of the time-varying scan fields to the time-varying scan field thresholds. | 02-13-2014 |