Medtronic, Inc.

Other

Michael L Hudziak

Shantanu Sarkar

Jerry D Reiland

Erin N Reisfeld

Vincent P Ganion

Todd Jon Sheldon

Subham Ghosh

Anthony W Schrock

Juliana E Pronovici

James D Reinke

Andrew J Ries

Karen J Kleckner

Paul R Solheim

Greggory R Herr

James J St Martin

John E Burnes

Ronald A Drake

William T Donofrio

Michael Robert Klardie

John D Wahlstrand

Paul Gordon Krause

William K Wenger

Aleksandre T Sambelashvili

Kathryn Hilpisch

George Patras

Michael W Heinks

Yanina Grinberg

James W Busacker

Christopher C Stancer

John E Nicholson

William L Johnson

Gautham Rajagopal

Jeffrey A Swanson

Thomas J Olson

Alexander R Mattson

Michael Kemmerer

Jean E Hudson

Kevin E Baumgart

Olivier Blandin

Paul Vahle

Samira Tahvildari

Pamela K Omdahl

Kristina Yates

Gary Toering

Yuying Chao

Stephanie Chen

Tara L Bratten

Robert W Libbey

Michael K Berquist

Techniques for determining whether a ventricular depolarization is a premature ventricular contraction (PVC) depolarization may include processing circuitry of a medical system identifying an interval from a maximum slope point to a minimum slope point for each of a plurality of ventricular depolarizations and, for each of the plurality of ventricular depolarizations as a current ventricular depolarization, determining that the intervals from the maximum slope point to the minimum slope point for the current ventricular depolarization, a preceding adjacent ventricular depolarization of the plurality of ventricular depolarizations, and a subsequent adjacent ventricular depolarization of the plurality of ventricular depolarizations satisfy one or more slope criteria. The processing circuitry determines that the current ventricular depolarization is a PVC depolarization based on the intervals from the maximum slope point to the minimum slope point satisfying the one or more slope criteria.

Premature ventricular contraction (PVC) detection

A medical device is configured to produce a cardiac motion signal by sampling a signal produced by an axis of a motion sensor, starting a blanking period, suspending the sampling of the signal during at least a portion of the blanking period, and restarting the sampling of the signal at the sampling frequency before the blanking period has expired. The medical device may detect a cardiac event from the cardiac motion signal and generate a pacing pulse in response to detecting the cardiac event in some examples.

Methods and apparatus for reducing current drain in a medical device

A medical system is configured to deliver an implantable medical device to a targeted implant site. The system may include a processor configured to receive a cardiac electrical signal and determine a feature of the cardiac electrical signal. The processor may be configured to determine a position of the delivery tool based on at least one feature of the cardiac electrical signal. The processor may detect a deployment position of the delivery tool in response to the cardiac electrical signal feature meeting criteria for detecting the deployment position.

System and method for detecting medical device delivery tool position

A system and method for detecting and verifying bradycardia/asystole episodes includes sensing an electrogram (EGM) signal. The EGM signal is compared to a primary threshold to sense events in the EGM signal, and at least one of a bradycardia or an asystole is detected based on the comparison. In response to detecting at least one of a bradycardia or an asystole, the EGM signal is compared to a secondary threshold to sense events under-sensed by the primary threshold. The validity of the bradycardia or the asystole is determined based on the detected under-sensed events.

Method and apparatus for verifying bradycardia/asystole episodes via detection of under-sensed events

Examples are described for configuring cardiac pacing circuitry of an implantable medical device. Circuitry that is configurable to control delivery of therapy or sense signals in accordance with a plurality of vectors may determine that one or more pins, for therapy delivery or sensing in accordance with a first subset of vectors of the plurality of vectors, are in an electrically floating state. Circuitry may selectively close one or more switches to couple at least a subset of the one or more pins to one or more set voltage levels, and deliver therapy in accordance with a vector of a second subset of vectors of the plurality of vectors, wherein the second subset of vectors is different than the first subset of vectors.

Circuit configuration based on depopulated pins

In an example, an implantable medical device (IMD) includes a hold capacitor configured to deliver an electrical therapy pulse, and charge pump circuitry configured to transfer energy from the battery to the hold capacitor. In this example, the charge pump circuitry comprises a plurality of capacitors, and switching circuitry configured to put the charge pump circuitry into a K-factor mode selected from a group of K-factor modes by opening and closing a combination of switches connected to the plurality of capacitors.

Pacing output K-factor improvements

Techniques are described for selectively enabling and disabling a pre-stimulation passive recharge pacing mode for an implantable medical device (IMD) depending on whether the IMD is operating in an electromagnetic interference (EMI)-safe mode. In some examples, the IMD may enable the pre-stimulation passive recharge pacing mode when the IMD is operating in the EMI-safe mode, and disable the pre-stimulation passive recharge pacing mode when the IMD is not operating in the EMI-safe mode. The EMI-safe mode may be, in some examples, a magnetic resonance imaging (MRI)-safe mode.

Selectively enabling a passive recharge cycle for an implantable cardiac stimulation device

An implantable medical device (IMD) may include at least two separate lead connection assemblies, each with electrical connectors for connecting implantable leads to the IMD. In some examples, a IMD may include a first therapy module configured to generate a first electrical stimulation therapy and a second therapy module configured to generate a second electrical stimulation therapy for delivery to the patient. The IMD may include a first lead connection assembly including a first electrical connector electrically coupled to the first therapy module and a second lead connection assembly including a second electrical connector electrically coupled to the second therapy module. In some examples, the first and second lead connection assemblies are distributed around the outer perimeter of the IMD housing.

Implantable medical device including a plurality of lead connection assemblies

Growing community of inventors

Stillwater, MN, United States of America

Michael L Hudziak