Integrated CPR Defibrillator Electrode Contact Optimization

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Solution Overview

Problem

Current cardiopulmonary resuscitation (CPR) systems face challenges in achieving successful defibrillation and return of spontaneous circulation (ROSC) due to suboptimal electrode placement, high transthoracic resistance, and synchronization with CPR cycles.

Innovation Solution

An integrated automated resuscitation system that combines mechanical or pneumatic CPR capabilities with electrical countershock capabilities, optimizing electrode contact pressure, timing within CPR cycles, and electrical current flow to enhance defibrillation efficacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electrodes are placed on the patient using conventional methods, then defibrillation can be performed, but electrode contact pressure is suboptimal and transthoracic resistance remains high

Engineering Contradiction:

Improvedefibrillation success rateVSAvoidtransthoracic resistance

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent combines the CPR compression mechanism and defibrillation electrode into a single integrated device. The electrode is positioned on the patient-facing surface of the CPR device, allowing simultaneous optimization of compression force and electrode contact pressure through a unified structural design, thereby reducing transthoracic resistance while ensuring reliable defibrillation delivery.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The electrode is pre-positioned on the patient-facing surface of the CPR device before contact with the patient. This preliminary placement ensures optimal electrode-skin contact is established in advance, minimizing transthoracic resistance before defibrillation is delivered, while the CPR compression mechanism is already in place to enhance current flow.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If defibrillation is delivered independently without integration with CPR, then electrical shock can be applied, but synchronization with CPR cycles is lost reducing efficacy

Engineering Contradiction:

Improvedefibrillation efficacyVSAvoidsynchronization timing

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent merges the defibrillation delivery mechanism with the CPR cycle control system. The integrated design allows the defibrillation shock to be synchronized with specific phases of the CPR cycle (such as during chest decompression or at optimal moments in the compression-decompression sequence), maximizing the efficacy of electrical current flow through the heart while maintaining proper timing coordination.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of manufacture

If mechanical CPR components and electrical defibrillation components are separate, then each function can be optimized independently, but integration and coordination between functions are compromised

Engineering Contradiction:

Improveindependent optimizationVSAvoidintegration coordination

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The CPR device is designed with multi-functionality, incorporating both mechanical compression capabilities and electrical defibrillation capabilities in a single unified platform. The patient-facing surface serves dual purposes: delivering mechanical compression force and providing optimal electrode contact. This universal design allows independent optimization of each function while maintaining seamless integration and coordination through shared structural and control elements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 significantly improves the probability of defibrillation and ROSC by optimizing mechanical and electrical components, reducing transthoracic resistance, and synchronizing defibrillation with the CPR cycle.

Implementation Method 1

Cardiopulmonary resuscitation (CPR) may create forward blood flow by applying force to the patient's thorax either by piston type mechanisms or circumferential constriction mechanisms

Methodology Applied

Scientific EffectMechanical Force: Force

Implementation Method 2

Application of suction mechanisms may allow active decompression of the chest

Methodology Applied

Scientific EffectSuction: Suction

Implementation Method 3

Commonly, electrical countershock is performed by applying electrical potential—and thus current—across the chest via electrodes connected to a capacitor-based defibrillator

Methodology Applied

Scientific EffectElectrical Conduction: Conduction (electrical)

Implementation Method 4

Devices for countershock are well known and consist fundamentally of an electrically charged capacitor connected to electrodes on or within the patient and a switch between the capacitor and the electrodes

Methodology Applied

Scientific EffectCapacitance: Capacitance

Data Source

PatentUS12285621B2Automated resuscitation system integrating hemodynamic and defibrillatory capabilities

Publication Date: 2025.04.29 PARADIS NORMAN ALAN

AI summary

An automated resuscitation system is provided, which can improve the outcome of patients suffering ventricular fibrillation or the ventricular tachycardia variants of cardiac arrest. This outcome can be achieved by a device that integrates automatic mechanical or pneumatic capability with electrical countershock capability such that the probability of defibrillation or cardioversion with return of spontaneous circulation is increased.