Vagal Stimulation Synchronization for Ventricular Arrhythmia

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Solution Overview

Problem

Current methods for treating heart conditions using vagal stimulation lack effective monitoring and adaptive delivery mechanisms, particularly in addressing ventricular arrhythmias and preventing their recurrence, with limited synchronization to cardiac activity and inadequate adjustment of stimulation based on patient response.

Innovation Solution

A system comprising a monitoring apparatus, sensing module, therapy delivery module, and control module that analyzes physiological parameters to detect ventricular arrhythmias, synchronizes electrical stimulation with cardiac activity, and adjusts or terminates therapy based on patient response, including synchronization with P-waves or R-waves, and monitoring for lead dislodgement or worsening cardiac conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If vagal stimulation is delivered to treat ventricular arrhythmias, then cardiac function is improved, but the risk of lead dislodgement and ineffective stimulation increases

Engineering Contradiction:

Improveeffectiveness of vagal stimulationVSAvoidlead dislodgement risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary detection of lead position and cardiac conditions before delivering vagal stimulation. The monitoring apparatus continuously tracks physiological parameters and lead integrity, ensuring that stimulation is only delivered when conditions are optimal, thereby preventing ineffective treatment and reducing lead dislodgement risk

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system incorporates continuous feedback mechanisms that monitor cardiac response to vagal stimulation in real-time. The control module adjusts stimulation parameters based on detected physiological changes, ensuring effective treatment while detecting lead dislodgement through abnormal signal patterns, thus maintaining reliability while minimizing harmful effects

Inventive Principle:

Principle #23Feedback

2Measurement precision

If continuous monitoring of physiological parameters is performed, then treatment accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvedetection accuracy of ventricular arrhythmiaVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The monitoring apparatus is designed with multi-functional capabilities that allow a single integrated system to perform multiple detection tasks including ventricular arrhythmia detection, lead position monitoring, and cardiac response tracking. This universal design achieves high measurement precision without proportionally increasing device complexity, as one system accomplishes what would otherwise require multiple separate devices

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If electrical stimulation is synchronized with cardiac activity, then therapeutic effect is improved, but control complexity increases

Engineering Contradiction:

Improvesynchronization accuracyVSAvoidcontrol mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The control module utilizes the heart's own electrical signals (detected through existing electrodes) to automatically synchronize vagal stimulation with cardiac activity. The system self-regulates by detecting natural cardiac events and timing stimulation accordingly, achieving high synchronization accuracy without requiring complex external control mechanisms or additional hardware

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system effectively treats ventricular arrhythmias, prevents recurrence, and adjusts therapy to optimize cardiac function by synchronizing electrical stimulation with cardiac activity and responding to changes in patient physiology, thereby improving heart condition management.

Implementation Method 1

The monitoring apparatus is configured to monitor physiological parameters of a patient and includes at least one electrode to monitor the electrical activity of the patient's heart

Methodology Applied

Scientific EffectElectrical activity detection: Conduction (electrical)

Implementation Method 2

The therapy delivery module is configured to deliver electrical stimulation to the patient's vagus nerve

Methodology Applied

Scientific EffectElectrical stimulation: Conduction (electrical)

Data Source

PatentUS8718763B2Vagal stimulation

Publication Date: 2014.05.06 MEDTRONIC INC

AI summary

The disclosure herein relates generally to methods for treating heart conditions using vagal stimulation, and further to systems and devices for performing such treatment. Such methods may include monitoring physiological parameters of a patient, detecting cardiac conditions, and delivering vagal stimulation (e.g., electrical stimulation to the vagus nerve or neurons having parasympathetic function) to the patient to treat the detected cardiac conditions.