Flexible Mat CPR Force Sensor Feedback
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Solution Overview
Problem
Existing devices for supporting cardiopulmonary resuscitation, particularly for laypersons, face challenges in providing accurate and reliable feedback on compressive force and frequency due to uncertainty in application points, force magnitude, and relief timing, especially in emergency situations.
Innovation Solution
A device with a force transmission unit embedded in a flexible mat, equipped with a force sensor and display device, which generates perceivable signals to guide users in applying appropriate compressive forces and frequencies during cardiopulmonary resuscitation, ensuring correct positioning and adaptability to different physiological conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a device provides detailed feedback on compressive force and frequency, then the reliability of cardiopulmonary resuscitation improves, but the device complexity increases
Solution Approach 1:
The device incorporates a force sensor that continuously monitors compressive force and a frequency sensor that tracks compression rate, providing real-time feedback through visual and audible signals. This feedback mechanism guides users to maintain optimal compression parameters (force magnitude and frequency) during CPR, thereby improving reliability while managing complexity through targeted sensing and feedback channels.
Solution Approach 2:
The patent replaces complex mechanical measurement systems with electronic sensing technologies. Force sensors and frequency sensors electronically detect compression parameters and transmit data to a processor, which then generates feedback signals. This substitution of mechanical systems with electronic sensing and processing reduces overall device complexity while maintaining high measurement precision for force and frequency.
2Ease of operation
If a device provides real-time feedback signals, then the ease of operation improves, but the use of energy increases
Solution Approach 1:
The device provides feedback through periodic visual signals (displays) and audible signals (acoustic outputs) that synchronize with the compression cycle. The feedback is delivered in periodic bursts corresponding to compression events rather than continuous operation, reducing energy consumption while maintaining ease of operation during critical compression phases.
Solution Approach 2:
The patent introduces an intermediary processing unit that receives raw sensor data, evaluates it against target parameters, and generates simplified feedback signals. This intermediary layer filters and prioritizes information, providing only essential feedback (force magnitude and frequency cues) through energy-efficient visual and audible channels, thereby balancing ease of operation with reduced energy demand.
3Measurement precision
If a device monitors multiple parameters (force, frequency, timing), then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The device segments measurement functions into dedicated sensors for specific parameters: a force sensor for compressive force magnitude, a frequency sensor for compression rate, and timing mechanisms for relief phase monitoring. Each sensor independently measures its designated parameter with high precision, and a central processor integrates these segmented measurements. This segmentation allows accurate multi-parameter monitoring while managing complexity through functional separation.
Solution Approach 2:
The patent employs a universal processor unit that handles multiple measurement tasks: evaluating force magnitude from the force sensor, analyzing frequency from the frequency sensor, and timing compression-relief cycles. This single multi-functional processor integrates diverse measurement functions, improving measurement precision across all parameters while avoiding the complexity of separate dedicated processing units for each parameter.
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 enhances the safety and effectiveness of cardiopulmonary resuscitation by providing clear, reliable feedback on force and frequency, improving user confidence and adherence to optimal compression techniques, even in stressful or uncontrolled environments.
Implementation Method 1
A force sensor (13) arranged between the lower and the upper plate for detecting a force exerted on the lower plate via the upper plate
Data Source
Figure 1
Figure 2~3b
Figure 4a~4c
AI summary
Disclosed is apparatus (1.50) for assisting a user during a cardiopulmonary resuscitation of a patient (40), said apparatus comprising: a force-transmission unit (10) having a lower plate (11) that can be placed on the chest of the patient (40), an upper plate (12) located at a distance from the lower plate (11) and a force sensor (13) arranged between the lower plate (11) and the upper plate (12) for detecting a force that can be exerted on the chest of the patient (40) by means of the upper plate (12) and the lower plate (11); a display device for generating at least one signal that can be perceived by the user; and an electronic control device for controlling the display device on the basis of the force detected by the force sensor, wherein the force-transmission unit (10) is embedded in a flexible mat (2).