Chest Compliance Sensing for Neutral CPR Compression Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing chest compression devices during CPR struggle to accurately measure and provide real-time feedback on the varying chest compliance and neutral position of patients, leading to suboptimal compression-decompression cycles that can be ineffective or injurious.
Innovation Solution
A system with sensors and processors that calculate chest compliance relationships to determine the neutral position, providing real-time feedback to rescuers on the effectiveness of their chest compressions, adjusting forces to improve CPR treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional chest compression methods are used, then the rescuer can perform CPR without additional equipment, but the measurement precision of chest compression parameters is insufficient and real-time feedback is not provided
Solution Approach 1:
The patent replaces manual mechanical assessment of chest compression quality with electronic sensor-based measurement systems. Force sensors, accelerometers, and position sensors automatically detect and quantify compression depth, rate, and quality, eliminating the need for rescuers to manually estimate these parameters and providing objective real-time feedback.
Solution Approach 2:
The patent implements real-time feedback systems that monitor chest compression parameters using sensors and immediately communicate quality metrics to the rescuer through visual, auditory, or haptic signals. This closed-loop feedback enables rescuers to adjust their technique continuously to maintain optimal compression quality throughout the resuscitation effort.
2Measurement precision
If real-time feedback systems with multiple sensors are implemented, then measurement precision and feedback quality improve, but device complexity and cost increase
Solution Approach 1:
The patent designs feedback devices that perform multiple functions simultaneously: force sensors measure both compression depth and compression rate, accelerometers detect both chest wall motion and device stability, and the system integrates monitoring, feedback delivery, and data recording in a single unified platform. This multi-functionality reduces the need for separate specialized devices for each measurement task.
Solution Approach 2:
The patent combines multiple sensor types (force sensors, accelerometers, position sensors) and multiple functions (measurement, feedback, data storage) into an integrated single device that attaches to the chest. This consolidation simplifies the overall system architecture and reduces the number of separate components the rescuer must manage during CPR.
3Productivity
If chest compression force is increased to improve blood flow, then circulation effectiveness improves, but the risk of chest injury increases
Solution Approach 1:
The patent uses real-time force sensor measurements to provide feedback on compression depth and quality, enabling rescuers to apply sufficient force to generate adequate blood flow while receiving immediate guidance to avoid excessive force that could cause injury. The system monitors compression metrics continuously and alerts the rescuer when parameters approach dangerous thresholds.
Solution Approach 2:
The patent dynamically adjusts the target compression parameters based on patient-specific characteristics detected during resuscitation. The system modifies recommended compression depth, rate, and force thresholds in real-time based on feedback from sensors monitoring chest wall response, allowing optimization of blood flow generation while adapting to changing patient conditions and reducing injury risk.
Data Source
AI summary
Among other things, in one aspect, we describe a system for assisting with cardiopulmonary resuscitation (CPR). The system includes at least one sensor; and one or more processors configured for calculating a chest compliance relationship based on data received from the at least one sensor, and determining a neutral position of chest compression based at least in part on a feature of the chest compliance relationship. The system can take the form of an active compression-decompression device.