Carotid Blood-Flow Ultrasound for Intuitive CPR Feedback
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Solution Overview
Problem
Existing ultrasound devices for CPR feedback require ultrasound expertise, limiting their use to trained professionals, and manual palpation is less effective than Doppler ultrasound for determining a spontaneous pulse.
Innovation Solution
A non-sonographer-friendly ultrasound sensor that measures blood velocity/flow, providing audio and visual feedback, integrated with medical devices like monitors/defibrillators, and optionally includes oxygenation saturation and CO2 production sensors for patient-specific CPR guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional ultrasound devices are used for CPR feedback, then measurement precision is improved, but device complexity and ease of operation deteriorate due to requiring ultrasound expertise
Solution Approach 1:
The patent introduces an intermediary processing layer that automatically converts complex ultrasound images into simplified velocity/flow data and visual indicators. The system includes an image processing module that extracts quantitative data from ultrasound images and a feedback module that presents this data in an intuitive format, eliminating the need for users to interpret complex ultrasound images directly.
Solution Approach 2:
The patent replaces the manual interpretation mechanism with an automated electronic processing system. Instead of requiring ultrasound professionals to manually analyze images, the system uses computer-based image processing algorithms to automatically extract velocity/flow information and generate visual feedback indicators, substituting mechanical human expertise with electronic automation.
2Measurement precision
If ultrasound images are presented to users, then measurement precision is improved, but ease of operation deteriorates because users must interpret complex images
Solution Approach 1:
The patent extracts the essential quantitative information (velocity/flow data) from the complex ultrasound images and separates it from the image presentation. The system processes images to extract only the critical numerical parameters and presents these as simplified visual indicators, removing the complexity of image interpretation while preserving measurement precision.
Solution Approach 2:
The patent creates a simplified copy or representation of the ultrasound data in the form of visual indicators and numerical readouts. Instead of requiring users to directly view and interpret the original complex ultrasound images, the system generates simplified visual copies that convey the same critical information in an easily interpretable format.
3Device complexity
If manual palpation is used to detect spontaneous pulse, then device complexity is reduced, but measurement precision deteriorates compared to Doppler ultrasound
Solution Approach 1:
The patent replaces the manual mechanical palpation technique with an electronic Doppler ultrasound system. The system uses acoustic wave detection and electronic signal processing to automatically detect and measure spontaneous pulse characteristics, substituting the mechanical finger-based method with an electronic measurement system that provides superior precision.
Solution Approach 2:
The patent introduces an intermediary electronic detection system between the user and the physiological parameter being measured. The Doppler ultrasound system acts as an intermediary that automatically detects pulse characteristics and converts them into quantifiable data, eliminating the need for direct manual contact while providing more precise measurements.
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
Enables effective CPR quality improvement by non-sonographers through intuitive audio and visual indicators, enhancing CPR technique adjustment based on real-time physiological data, and aiding in endotracheal tube placement and carotid artery blockage detection.
Implementation Method 1
The ultrasound sensor can measure blood velocity or flow
Data Source
AI summary
Various exemplary embodiments of the present disclosure encompass a cardiopulmonary resuscitation (“CPR”) feedback method involving a carotid blood velocity measurement by an ultrasound sensor (20) of a patient during CPR of the patient and further involving a blood oxygenation measurement by an oxygenation saturation sensor (30) during CPR of the patient and/or a CO2 production measurement by a respiratory sensor (40) during CPR of the patient. An exemplary CPR feedback controller (60) generates CPR feedback based on a descriptive correlation and/or a prescriptive correlation of the carotid blood velocity measurement by the ultrasound sensor (20) and one or both of the blood oxygenation measurement by the oxygenation saturation sensor (30) and the CO2 production measurement by the respiratory sensor (40).