Pacesetter, Inc.

Shiloh Sison

Xi Lin Chen

Xiyao Xin

Gabriel A Mouchawar

Xiaoyi Min

Shi Feng

Richard P Williamson

Reza Shahandeh

Aaron T Raines

Gary R Dulak

Xin Huang

Yash Vardhan Tiwari

DeLea Peichel

An implantable medical device (IMD) is provided and includes sensing circuitry coupled to electrodes. The sensing circuitry is configured to sense electrical biological signals indicative of a non-physiologic condition of interest experienced by a patient during a magnetic resonance imaging (MRI) procedure, and in the presence of an MRI scanning sequence, the MRI scanning sequence includes at least one of radio frequency (RF) or gradient fields that are in an active state for active field intervals. The device includes memory to store the biological signals and to store program instructions and includes a processor that, when executing the program instructions, is configured to: determine start times for the active field intervals when the at least one of RF or gradient fields switch to the active state and manage generation of MRI-induced-noise corrected (MRI-INC) biological signals, based on the start times for the active field intervals, by at least one of: 1) applying a blanking interval to the sensing circuitry to blank a sensing operation during at least portions of the active field interval or 2) modifying segments of the biological signal sensed during at least the portions of the active field interval, and 3) comparing biologic signal sensed during at least the portions of the active field interval to a template. The device analyzes the biological signals for an indication that the patient is experiencing the non-physiologic condition.

Methods and devices related to operation of an implantable medical device during magnetic resonance imaging

Certain embodiments described herein related to methods, devices, and systems that provide improved communications between first and second IMDs remotely located relative to one another and capable of communicating using both conductive communication and RF communication. Such a method can include the first IMD using conductive communication to transmit message(s) intended for the second IMD, without using RF communication, during a first period of time that a first trigger event is not detected. The method can also include the first IMD detecting the first trigger event, and in response thereto, the first IMD using RF communication to transmit message(s) intended for the second IMD during a second period of time. Thereafter, in response to first IMD detecting a second trigger event, the first IMD uses conductive communication to transmit one or more messages intended for the second IMD, without using RF communication, during a third period of time.

Implant to implant communication for use with implantable medical devices

A system for validating safety of a medical device in a presence of a magnetic resonance imaging (MRI) field is provided. The system includes a first electric field generating device configured to form first electric field and configured to receive a medical device at least partially within the first electric field, and a second electric field generating device configured to form a second electric field in proximity to the first electric field and configured to receive the medical device at least partially within the second electric field. One or more processors are configured to execute program instructions to calculate predicted parameter values of the medical device based on a transfer function, the transfer function defined to predict a safety characteristic of the medical device when in the presence of an MRI field, obtain measured parameter values from the medical device, the measured parameter values indicative of the safety characteristic of the medical device when exposed to the first and second electric fields, and compare the measured parameter values to the predicted parameter values in connection with validating the transfer function.

Method and system for validating safety of a medical device when exposed to magnetic resonance imaging fields

The present disclosure provides systems and methods for reducing RF heating in implantable leads. An implantable lead includes a first electrode, and a coupling component spaced from the first electrode, wherein the first electrode and the coupling component form a capacitor, wherein the first electrode and the coupling component are electrically isolated from one another at therapy frequencies, and wherein the first electrode and the coupling component are electrically coupled to one another at magnetic resonance imaging (MRI) frequencies.

Systems and methods for reducing RF heating in implantable leads

The present disclosure provides neurostimulation methods and system for deep brain stimulation. A neurostimulation system for deep brain stimulation includes a burr hole plug including a cover and a base, and at least one deep brain stimulation (DBS) lead extending through an aperture defined through the base, the at least one DBS lead including at least one DBS electrode configured to apply stimulation to a subject. The system further includes an implantable pulse generator (IPG), an extension electrically coupling the IPG to the at least one DBS lead, and an indifferent electrode positioned proximate the at least one DBS electrode to facilitate reducing an area between the indifferent electrode and the at least one DBS electrode.

Implantable neurostimulation systems and methods thereof

A method for determining the cause of an irregularity in physiologic data collected by a medical device may include monitoring a collected physiologic characteristic of a patient through the physiologic data, detecting an irregularity in the physiologic data, monitoring position data of the patient, correlating the physiologic data with the position data, and determining the cause of the irregularity in the physiologic data based on correlation of the physiologic data with the position data.

System and method for determining cause of irregularity within physiologic data

Leadless neurostimulation (NS) device including a device body and electrodes positioned along an active side of the device body. The electrodes form a multi-electrode array that is configured to interface with nervous tissue of a patient and supply electrical pulses to the nervous tissue. The NS device also includes an electronic sub-system that is coupled to the device body. The electronic sub-system includes switching circuitry, a power source, and an inductive coil that is operably coupled to the power source. The inductive coil is configured to receive electrical power through inductive coupling with an external coil. The device body, including the inductive coil coupled thereto, is sized and shaped to be disposed within an epidural space of a patient.

Leadless neurostimulation device and method including the same

Embodiments of the present invention generally pertain to implantable medical devices, and methods for use therewith, that detect exposure to magnetic fields produced by magnetic resonance imaging (MRI) systems. In accordance with specific embodiments, a sensor output is produced using an implantable sensor that is configured to detect acceleration, sound and/or vibration, but is not configured to detect a magnetic field. Such a sensor can be an accelerometer sensor, a strain gauge sensor or a microphone sensor, but is not limited thereto. In dependence on the produced sensor output, there is a determination whether of whether the IMD is being exposed to a time-varying gradient magnetic field from an MRI system. In accordance with certain embodiments, when there is a determination that the IMD is being exposed to a time-varying gradient magnetic field from an MRI system, then a mode switch to an MRI safe mode is performed.

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Alameda, CA, United States of America

Shiloh Sison