Compact CPR Device with Audible Spring Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cardiopulmonary resuscitation devices are complex and difficult for laypersons to operate, often requiring central pressure application and stable positioning, which can lead to delays in treatment during cardiac arrest.
Innovation Solution
A compact device with a spring system that generates audible signals when a predetermined pressure is reached, allowing for cyclic and controlled pressure application on the thorax, independent of central pressure positioning, and optionally integrating a defibrillator for immediate use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanical pressure system is used to apply cyclic pressure to the thorax, then cardiopulmonary resuscitation can be performed, but the device becomes complex and difficult for laypersons to operate
Solution Approach 1:
The device is divided into distinct functional modules: a base plate for stable positioning, a plunger for pressure application, and a pneumatic mechanism for cyclic actuation. This segmentation allows each component to perform its function independently, simplifying the overall operation for laypersons while maintaining effectiveness
Solution Approach 2:
The pneumatic mechanism automatically generates cyclic pressure without requiring manual operation for each compression cycle. Once activated, the system self-regulates the compression rhythm, reducing the cognitive and physical burden on the operator while ensuring consistent resuscitation quality
2Reliability
If central pressure application is required to achieve the desired resuscitation effect, then pressure control can be maintained, but the device becomes difficult to position stably on the chest in emergency situations
Solution Approach 1:
The base plate is designed with features that ensure stable positioning on the chest before pressure application begins. This preliminary stabilization allows the plunger to apply pressure reliably without requiring perfect central alignment during the emergency procedure
Solution Approach 2:
The base plate incorporates curved surfaces that conform to the anatomical shape of the human chest. This curvature enables the device to maintain stable contact and reliable pressure transmission even when not perfectly centered, accommodating the urgent and often imperfect positioning conditions in emergency resuscitation
3Reliability
If complex mechanical components are used to ensure functional safety, then safety requirements can be met, but the device becomes too complicated for rapid deployment in cardiac arrest situations
Solution Approach 1:
The device extracts and isolates only the essential safety-critical functions: pressure sensing through the spring element and automatic cyclic actuation through the pneumatic mechanism. Non-essential complex components are removed, allowing the device to meet functional safety requirements while maintaining simplicity for rapid deployment
Solution Approach 2:
The pneumatic mechanism replaces complex mechanical linkages and manual operation systems. This substitution reduces the number of moving parts and potential failure points while maintaining reliable cyclic pressure application, enabling faster deployment without compromising safety
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 rapid and uncomplicated cardiopulmonary resuscitation by laypersons, ensuring safe and controlled pressure application with clear auditory feedback, reducing the complexity and time required for effective treatment.
Implementation Method 1
at least one spring element which, when a mechanical pressure (F) is applied, detects an adjustable limit pressure (F max) and returns to the spring element spontaneously springs back from its original starting position, generating a clearly audible signal (S)
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
The invention relates to a device (1) for a controlled cardio-pulmonary resuscitation, said device enabling the user to carry out a quick and uncomplicated resuscitation of a human body in the event of a cardiac arrest. The geometric dimensions of the device (1) according to the invention are comparatively small, ranging approximately from 10 and 25 cm in diameter and approximately 6 to 12 cm in height. During use, a mechanical pressure (F) is exerted onto a first pressure transmitting means (2, 22), said mechanical pressure generating a signal (S3, S4), which is perceptible to human organs, upon reaching a maximal exerted force (Fmax), wherein the signal is triggered by a spring element (24, 44) which is arranged between the pressure transmitting means (2, 22) and the base plate (3, 33). A defibrillator (9) can be integrated into the housing of the device (1), said defibrillator being used immediately after the first cardiopulmonary massage.