Medtronic, Inc.

Other

Medtronic, Inc. (cvg)

James D Reinke

David Jerome Peichel

Jonathan P Roberts

Wade M Demmer

Michael B Terry

William T Donofrio

Paul Gordon Krause

Gerald P Arne

Todd Jon Sheldon

Xusheng Zhang

Timothy J Davis

Robert Michael Ecker

John E Burnes

Saul E Greenhut

Xiaohong Zhou

Paul R Solheim

James Kevin Carney

Can Cinbis

Hyun J Yoon

Michael L Ellingson

Charles R Gordon

Jonathan D Edmonson

Matthew J Hoffman

Scott A Hareland

Vinod Sharma

Ben W Herberg

Jonathan L Kuhn

Robert A Betzold

Juliana E Pronovici

Robert W Stadler

Shohan T Hossain

Barbara J Schmid

Weizheng Liang

Troy Edward Jackson

Walter H Olson

John D Wahlstrand

Robert J Nehls

Vladimir Pavlovich Nikolski

Volkert A Zeijlemaker

Jon D Schell

James W Busacker

Daniel L Hansen

Donna M Salmi

Andrew J Ries

Yong Kyun Cho

Zhongping C Yang

Eric J Panken

Mark K Erickson

Richard J O'Brien

Glenn M Roline

Kamal Deep Mothilal

Jeffrey David Wilkinson

Kevin Patrick Kuehn

Robert A Corey

Kaustubh R Patil

Laurie D Foerster

Joseph A Ballis

John Louis Sommer

Kenneth C Gardeski

Gordon Orvis Munns

Thomas P Miltich

Brad Conrad Tischendorf

Gregory Anthony Hrdlicka

Andrew Jason Thom

Brian Bruce Lee

William John Taylor

Joyce Yamamoto

Michael W Heinks

Larry Earl Tyler

Michael T Hemming

Eric R Williams

Russell E Anderson

Sarah Anne Audet

Todd M Tanji

Joseph M D'Sa

Bruce D Gunderson

Thomas A Anderson

Erik Griswold

George Patras

Paul F Gerrish

James Calvin Allan

Nathan A Grenz

Shawn D Knowles

Robert John Schuelke

John E Nicholson

James Strom

Kevin K Walsh

Michael L Hudziak

Joel B Artmann

Terrence R Hudrlik

Xiaonan Shen

Kevin K Tidemand

William J Plombon

Kevin L Bright

Thomas I Ceballos

Jeffrey M Jelen

Michael R Kane

John R Hamilton

Ren Zhou

Bushan K Purushothaman

An implantable medical device comprises a sensing module configured to obtain electrical signals from one or more electrodes and a control module configured to process the electrical signals from the sensing module in accordance with a tachyarrhythmia detection algorithm to monitor for a tachyarrhythmia. The control module detects initiation of a pacing train delivered by a second implantable medical device, determines a type of the detected pacing train, and modifies the tachyarrhythmia detection algorithm based on the type of the detected pacing train.

Implantable cardioverter-defibrillator (ICD) tachyarrhythmia detection modifications responsive to detected pacing

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.

Methods and implantable medical systems that implement exposure modes of therapy that allow for continued operation during exposure to a magnetic disturbance

A device, such as an IMD, having a tissue conductance communication (TCC) transmitter controls a drive signal circuit and a polarity switching circuit by a controller of the TCC transmitter to generate an alternating current (AC) ramp on signal having a peak amplitude that is stepped up from a starting peak-to-peak amplitude to an ending peak-to-peak amplitude according to a step increment and step up interval. The TCC transmitter is further controlled to transmit the AC ramp on signal from the drive signal circuit and the polarity switching circuit via a coupling capacitor coupled to a transmitting electrode vector coupleable to the IMD. After the AC ramp on signal, the TCC transmitter transmits at least one TCC signal to a receiving device.

Tissue conduction communication using ramped drive signal

Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.

Systems and methods for leadless pacing and shock therapy

In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.

Pace pulse detector for a medical device

The control module of a first pacemaker included in an implantable medical device system including the first pacemaker and a second pacemaker is configured to set a pacing escape interval in response to a far field pacing pulse sensed by the first pacemaker. The far field pacing pulse is a pacing pulse delivered by the second pacemaker. The pacing escape interval is allowed to continue without restarting the in response to a far field intrinsic event sensed by the first pacemaker during the pacing escape interval. The first pacemaker delivers a cardiac pacing pulse to the heart upon expiration of the pacing escape interval.

Multi-chamber intracardiac pacing system

Systems, devices, and techniques for establishing communication between two medical devices are described. In one example, an implantable medical device comprises communication circuitry, therapy delivery circuitry, and processing circuitry configured to initiate a communication window during which the implantable second medical device is capable of receiving the information related to a cardiac event detected by a first medical device, the communication window being one of a plurality of communication windows defined by a communication schedule that corresponds to a transmission schedule in which the first medical device is configured to transmit the information, control the communication circuitry to receive, from the first medical device, the information related to the cardiac event that is indicative of a timing of the cardiac event with respect to a timing of the communication window, schedule and control delivery of a therapy according to the information related to the cardiac event.

Low power wireless communication

Techniques for facilitating communication between an implantable medical device and an external device are provided. In one example, a method comprises broadcasting, via communication circuitry of an implantable device, a first set of advertisements at a first advertising rate according to a communication protocol. The method further comprises determining that detection circuitry of the implantable device detected voltage induced by an electromagnetic field at an interface between tissue of a patient and electrodes of the implantable device and in response to the detection of voltage induced by the electromagnetic field, broadcasting, via the communication circuitry, a second set of advertisements at a second advertising rate according to the communication protocol. The second advertising rate is greater than the first advertising rate.

Facilitating acceleration of advertising rates for medical devices

Implantable medical devices automatically switch from a normal mode of operation to an exposure mode of operation and back to the normal mode of operation. The implantable medical devices may utilize hysteresis timers in order to determine if entry and/or exit criteria for the exposure mode are met. The implantable medical devices may utilize additional considerations for entry to the exposure mode such as a confirmation counter or a moving buffer of sensor values. The implantable medical devices may utilize additional considerations for exiting the exposure mode of operation and returning to the normal mode, such as total time in the exposure mode, patient position, and high voltage source charge time in the case of devices with defibrillation capabilities.

Methods and implantable medical devices for automatic entry to an exposure mode of operation upon exposure to a magnetic disturbance

Growing community of inventors

Maple Grove, MN, United States of America

James D Reinke