Systems and methods for leadless pacing and shock therapy

An electrode, electrical signal technology, applied in the direction of electrotherapy, therapy, cardiac electrodes, etc., can solve the problem that R waves cannot be identified.

Active Publication Date: 2015-11-25
MEDTRONIC INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Defibrillation shocks are usually delivered when fibrillation criteria are

Method used

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  • Systems and methods for leadless pacing and shock therapy
  • Systems and methods for leadless pacing and shock therapy
  • Systems and methods for leadless pacing and shock therapy

Examples

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Embodiment Construction

[0030]The present disclosure describes various techniques and systems for monitoring tachyarrhythmias and delivering anti-tachycardia therapy using subcutaneous implantable cardioverter defibrillation (SICD) and leadless pacing devices (LPD). In general, SICDs may be configured to detect tachyarrhythmias and deliver anti-tachyarrhythmic shock therapy from one or more electrodes implanted subcutaneously, such as outside the patient's chest cavity. Thus, the SICD can deliver shocks to the patient without any leads implanted within the patient's blood vessels and / or heart. However, the absence of endocardial or epicardial electrodes can reduce cardiac signal sensitivity and / or make sensing arrhythmias more challenging. For example, muscle movement, respiration, postural changes, and other sources of physiological signals, as well as environmental noise, can affect the ability of a SICD to detect cardiac arrhythmias from sensed electrocardiogram (ECG) signals. In addition, the ab...

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Abstract

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.

Description

technical field [0001] The present invention relates to a medical device, and more particularly to an implantable medical device configured to detect and treat cardiac arrhythmias. Background technique [0002] Implantable cardioverter-defibrillators are used to deliver high-energy cardioversion or defibrillation shocks to a patient's heart when atrial or ventricular fibrillation is detected. Cardioversion shocks are typically delivered synchronously with detected R-waves when fibrillation detection criteria are met. A defibrillation shock is usually delivered when the criteria for fibrillation are met, and the R-wave cannot be discerned from the signal sensed by the ICD. [0003] Currently, ICDs use endocardial or epicardial leads that extend from the ICD housing through the venous system to the heart. Electrodes placed in or near the heart via leads for pacing and sensing functions. Cardioversion and defibrillation shocks (eg, anti-tachyarrhythmic shocks) are typically ...

Claims

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Application Information

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IPC IPC(8): A61N1/372A61N1/362A61N1/39A61N1/375
CPCA61N1/3962A61N1/056A61N1/3621A61N1/36585A61N1/37288A61N1/3756A61N1/3987A61N1/39622
Inventor S·E·格林哈特R·J·内赫尔斯W·H·奥尔森X·张W·M·戴默T·E·杰克逊J·D·赖因克
Owner MEDTRONIC INC
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