Dual Sensor Electrode Pads for Accurate CPR Compression Feedback
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Solution Overview
Problem
Existing resuscitation systems lack accurate and adaptive feedback for chest compression depth, rate, and orientation during cardiopulmonary resuscitation, particularly for pediatric and adult patients, leading to potential errors due to varying patient sizes and surfaces.
Innovation Solution
A dual sensor electrode system with flexible pads and motion sensors, capable of identifying patient type and adjusting electrotherapy based on placement orientation, providing real-time feedback on compression depth, rate, and orientation, and correcting for errors induced by external surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single sensor system is used for resuscitation feedback, then device complexity is reduced, but measurement precision of compression depth and rate deteriorates
Solution Approach 1:
The system divides the sensing function into multiple independent motion sensors distributed across different electrode assemblies. Each sensor independently measures local motion parameters, and the processing circuitry integrates these segmented measurements to calculate comprehensive compression depth, rate, and orientation data, thereby improving measurement precision without requiring a single complex sensor system
Solution Approach 2:
The patent combines multiple motion sensors from different electrode assemblies into a unified sensing system. The processing circuitry merges the signals from these distributed sensors to derive accurate compression parameters, achieving high measurement precision while maintaining relative simplicity through signal integration rather than mechanical complexity
2Adaptability or versatility
If the system is designed for adult patients only, then device complexity is reduced, but adaptability to different patient types deteriorates
Solution Approach 1:
The system dynamically adapts its behavior based on detected patient characteristics. The processing circuitry analyzes motion patterns from the dual sensor system to automatically determine whether the patient is pediatric or adult, and adjusts compression parameter thresholds, feedback targets, and treatment protocols accordingly, enabling versatility without requiring manual reconfiguration
Solution Approach 2:
The patent implements automatic adjustment of system parameters based on patient type detection. When pediatric patients are detected through analysis of compression depth and body size indicators, the system modifies compression depth thresholds, rate targets, and energy delivery parameters to appropriate pediatric values, thereby achieving adaptability through parameter transformation rather than hardware changes
3Ease of operation
If motion sensors are integrated into electrode assemblies, then ease of operation is improved, but manufacturing precision requirements worsen
Solution Approach 1:
The electrode assemblies are designed as universal platforms that simultaneously provide electrical contact for defibrillation and housing for motion sensors. The sensor housing is integrated into the electrode assembly structure itself, allowing a single component to serve multiple functions (electrotherapy delivery and motion sensing) without requiring separate placement procedures, thereby improving ease of operation while managing manufacturing precision through integrated design
Data Source
AI summary
A system for facilitating resuscitation includes: a first electrode assembly having a therapy side and a first motion sensor; a second electrode assembly having a therapy side and a second motion sensor; processing circuitry operatively connected to and programmed to receive and process signals from the first and second motion sensors to estimate at least one of a chest compression depth and rate during administration of chest compressions and to compare the chest compression depth or rate to a desired range; and an output device for providing instructions to a user to administer chest compressions based on the comparison of the estimated chest compression depth or rate to the desired range. One or both of the electrode assemblies may be constructed so that the conductive therapeutic portion is able to maintain substantial conformance to the anatomy of the patient when coupled thereto. For example, at least a portion of the flexible electrode pad may be able to flex from a more rigid sensor housing, or the sensor housing itself may be relatively small compared to the flexible electrode pad so as not to cause lift off of the therapeutic side from the patient.