Ultrasonic CPR Feedback Device for Compression Depth Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current CPR devices face challenges in accurately measuring chest compression depth and frequency, leading to reduced effectiveness due to rescuer fatigue, lack of visual references, and external interference, resulting in inconsistent and potentially inadequate chest compressions.
Innovation Solution
A CPR feedback device using ultrasonic signals to measure chest compression depth by emitting pulses towards the spine and receiving reflections, with a processor providing real-time feedback on compression depth and frequency to ensure compliance with recommended guidelines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rescuer performs chest compressions manually without feedback devices, then the procedure is simple and requires minimal equipment, but the measurement precision of chest compression depth and frequency deteriorates due to lack of visual references and rescuer fatigue
Solution Approach 1:
The patent replaces manual mechanical measurement with ultrasonic wave-based measurement. The ultrasonic transducer emits sound waves that travel through the chest tissue to the spine and back, allowing non-contact measurement of compression depth. This substitutes the rescuer's visual estimation and manual measurement with an automated acoustic field-based system, significantly improving measurement precision without requiring complex mechanical sensors on the rescuer's hand.
Solution Approach 2:
The patent introduces an intermediary ultrasonic wave field between the rescuer and the chest compression measurement. Instead of directly measuring compression force or depth with contact sensors, the system uses ultrasonic waves as a mediator that can penetrate tissue and detect displacement indirectly through changes in wave transmission time and amplitude, enabling precise measurement without direct mechanical contact.
2Duration of action of moving object
If a rescuer performs chest compressions for extended periods, then more CPR can be administered to the patient, but the reliability of compression quality deteriorates due to rescuer fatigue and distorted sense of time
Solution Approach 1:
The patent implements real-time feedback to the rescuer through audio and visual cues. The system continuously monitors compression depth and frequency using ultrasonic waves and provides immediate feedback when compressions fall outside the target range. This closed-loop feedback system compensates for rescuer fatigue by objectively guiding each compression, ensuring consistent quality throughout extended CPR procedures.
Solution Approach 2:
The system enables self-correction by automatically detecting and signaling when compression depth or frequency is inadequate. The feedback mechanism allows the rescuer to self-regulate without external supervision, maintaining reliable compression quality even during prolonged procedures when fatigue would otherwise compromise performance.
3Force
If a rescuer positions shoulders directly above the victim's chest for chest compressions, then the compression force is maximized, but the ability to visually estimate compression depth deteriorates due to lack of visual reference points
Solution Approach 1:
The patent replaces visual estimation with ultrasonic measurement. The ultrasonic transducer positioned on the chest surface emits waves that travel to the spine and back, allowing precise measurement of compression depth without requiring the rescuer to view the compression from a specific angle. This acoustic measurement system eliminates the visual reference problem while the rescuer maintains the optimal overhead position for maximizing compression force.
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 device ensures consistent and effective chest compressions by providing accurate feedback on depth and frequency, enhancing the quality of CPR administration even under stressful conditions and reducing the risk of rescuer fatigue-related errors.
Implementation Method 1
an ultrasonic transducer to measure chest compression depth by emitting pulses towards the spine and receiving reflections
Data Source
AI summary
The present invention comprises a cardiopulmonary resuscitation (CPR) feedback device and a method for performing CPR. A chest compression detector device is provided that measures chest compression during the administration of CPR. The chest compression detector device comprises a signal transmitter operably positioned on the chest of the patient and adapted to broadcast a signal, and a signal receiver adapted to receive the signal. The chest compression detector device also comprises a processor, operably connected to the signal transmitter and the signal receiver. The processor repeatedly analyzes the signal received to determine from the signal a series of measurements of compression of the chest, and feedback is provided to the rescuer based on the series of measurements.