公开(公告)号：US11786739B2

公开(公告)日：2023-10-17

申请号：US16995965

申请日：2020-08-18

Applicant: Medtronic, Inc.

Inventor： Maureen E. Lybarger ,  Jian Cao ,  Wade M. Demmer ,  Michael W. Heinks ,  Jean E. Hudson ,  Michael Kemmerer ,  James J. St. Martin ,  Todd J. Sheldon

IPC: A61N1/36 ,  A61N1/362 ,  A61N1/365 ,  A61B5/352

CPC classification number: A61N1/3624 ,  A61B5/352 ,  A61N1/365

Abstract: A medical device is configured to set a post-atrial time interval in response to an atrial event and generate an event time signal in response to a ventricular electrical signal crossing an R-wave sensing threshold during the post-atrial time interval. The device accumulates oversensing evidence in response to the event time signal and adjusts a ventricular sensing control parameter based on the accumulated oversensing evidence in some examples.

公开(公告)号：US20220062620A1

公开(公告)日：2022-03-03

申请号：US17462905

申请日：2021-08-31

Applicant: Medtronic, Inc.

Inventor： Jacob A Roe ,  Jonathan P. Roberts ,  Joel B. Artmann ,  David J. Peichel ,  Michael Kemmerer

IPC: A61M60/873 ,  A61M60/148

Abstract: An internal coil interface implantable within the body of a patient and configured to modulate a load on an internal coil, and a method therefore are provided. According to one aspect, processing circuitry of the internal coil interface is configured to predict a time of a first voltage level crossing by a voltage at a terminal of the internal coil for each of a plurality of successive windows each time the capacitance is switched into the modulated load circuit or each time the capacitance is switched out of the modulated load circuit. The process is also configured to adjust the predictions based on whether a previous prediction of a time of a first voltage level crossing for a window was later or earlier than a time at which the first voltage level crossing actually occurred.

公开(公告)号：US12201454B2

公开(公告)日：2025-01-21

申请号：US17016470

申请日：2020-09-10

Applicant: Medtronic, Inc.

Inventor： Yanina Grinberg ,  Ronald A. Drake ,  Vincent P. Ganion ,  Kathryn Hilpisch ,  Michael L Hudziak ,  Michael Kemmerer ,  Alexander R. Mattson ,  Pamela K. Omdahl ,  Anthony W. Schrock ,  Kristina Yates

IPC: A61B5/00 ,  A61B5/06

Abstract: 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.

公开(公告)号：US20220266044A1

公开(公告)日：2022-08-25

申请号：US17185178

申请日：2021-02-25

Applicant: Medtronic, Inc.

Inventor： Scott G. Sorenson ,  Michael Kemmerer

IPC: A61N1/39

Abstract: A lead impedance stimulation architecture and a dual current source and sink methodology to output a biphasic current pulse and measure a resulting induced voltage across the stimulation electrodes to determine lead impedance. A common mode capacitance on the electrode interface may have little impact on the stimulation architecture of this disclosure allowing for fast voltage rise time and consistent and accurate impedance measurement. In addition, the dual source and sink includes a monitor circuit on each of the source and the sink circuitry. In the event of an open circuit indicating a lead breakage, loose connection, lead migration, insulation leak, and so on, the monitor circuit may provide an output to indicate specifically which electrode is unable to reach the correct current stimulation amplitude. In this manner the techniques of this disclosure, may also detect a lead break in a single lead impedance measurement.

公开(公告)号：US11826577B2

公开(公告)日：2023-11-28

申请号：US17185178

申请日：2021-02-25

Applicant: Medtronic, Inc.

Inventor： Scott G. Sorenson ,  Michael Kemmerer

IPC: A61N1/37 ,  A61N1/39

CPC classification number: A61N1/3937 ,  A61N1/37 ,  A61N1/3962 ,  A61N1/3968

Abstract: A lead impedance stimulation architecture and a dual current source and sink methodology to output a biphasic current pulse and measure a resulting induced voltage across the stimulation electrodes to determine lead impedance. A common mode capacitance on the electrode interface may have little impact on the stimulation architecture of this disclosure allowing for fast voltage rise time and consistent and accurate impedance measurement. In addition, the dual source and sink includes a monitor circuit on each of the source and the sink circuitry. In the event of an open circuit indicating a lead breakage, loose connection, lead migration, insulation leak, and so on, the monitor circuit may provide an output to indicate specifically which electrode is unable to reach the correct current stimulation amplitude. In this manner the techniques of this disclosure, may also detect a lead break in a single lead impedance measurement.

公开(公告)号：US11617877B2

公开(公告)日：2023-04-04

申请号：US16951037

申请日：2020-11-18

Applicant: Medtronic, Inc.

Inventor： Michael Kemmerer ,  Robert Ecker

IPC: H02P21/13 ,  H02P6/18 ,  A61M60/515 ,  A61M60/148

Abstract: A controller for an implantable blood pump including processing circuitry configured to operate the implantable blood pump and a piezoelectric element in communication with the implantable blood pump.

公开(公告)号：US20210408843A1

公开(公告)日：2021-12-30

申请号：US17361669

申请日：2021-06-29

Applicant: Medtronic, Inc.

Inventor： Jonathan P. Roberts ,  Joel B. Artmann ,  David J. Peichel ,  Jacob A. Roe ,  Michael Kemmerer

IPC: H02J50/80 ,  H02J50/10

Abstract: A controller implantable within the body of a patient as part of a left ventricular assist device (LVAD) system and a method therefore are provided. According to one aspect, the controller includes processing circuitry configured to determine a voltage difference by determining a difference between a first voltage obtained from an internal coil of the controller and a target voltage, and is further configured to encode the voltage difference to produce an encoded voltage difference message. The internal coil is configured to transmit the encoded voltage difference message to a power transmitter to enable closed loop control of power transfer from the power transmitter to the controller to drive the voltage difference toward zero.