CPR Device with Active Circumferential Decompression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current CPR devices face challenges such as operator fatigue, variability in compression rate and force, limited portability, and increased risk of trauma due to manual or automated methods, which can lead to ineffective chest compression and decompression during cardiac arrest.
Innovation Solution
An integrated resuscitation system that includes a CPR device capable of delivering active sternum and circumferential compression and decompression, combined with real-time monitoring and defibrillation, and a GPS for location tracking, designed to provide consistent and effective chest compression while minimizing trauma and enhancing venous return and coronary perfusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual CPR is administered, then portability and simplicity are improved, but operator fatigue and variability in compression quality occur
Solution Approach 1:
The CPR device is designed to perform chest compressions autonomously without requiring continuous operator intervention. The automated mechanism applies compressions at consistent rates and depths, eliminating operator fatigue and variability while maintaining portability through a self-contained mechanical system.
Solution Approach 2:
The patent replaces manual mechanical compression with an automated mechanical system that uses a motorized or spring-loaded mechanism to deliver consistent chest compressions. This substitution maintains the portability of manual devices while achieving the reliability of automated systems.
2Reliability
If automated CPR devices with motorized belts are used, then compression consistency is improved, but device complexity and portability are worsened
Solution Approach 1:
The patent replaces complex motorized belts with a simplified mechanical system using springs, levers, and cam mechanisms. This automated mechanical system achieves consistent compression delivery without requiring motors, electronics, or complex control systems, thereby reducing device complexity while maintaining reliability.
Solution Approach 2:
The device uses adjustable spring tension and cam profile parameters to control compression force and rate. By changing these mechanical parameters rather than using complex electronic controls, the system achieves compression consistency with simpler device architecture.
3Reliability
If automated inflatable cuffs are used for circumferential compression, then compression effectiveness is improved, but device size and portability are worsened
Solution Approach 1:
The patent extracts the inflation mechanism from the device by using pre-charged springs that expand to deliver circumferential compression. This eliminates the need for large inflatable cuffs and rapid inflation/deflation systems, significantly reducing device volume while maintaining compression effectiveness.
Solution Approach 2:
The device uses spring expansion rather than pneumatic inflation to achieve circumferential compression. This mechanical approach replaces the need for large-volume bladders and complex pneumatic systems, reducing device size while delivering effective compression forces.
4Productivity
If high compression force is applied, then cardiac output is improved, but risk of trauma to patient is increased
Solution Approach 1:
The patent incorporates cushioning elements such as foam pads or compliant surfaces between the compression mechanism and the patient's chest. This cushioning protects against trauma while allowing transmission of sufficient compression force to achieve effective cardiac output during CPR.
Solution Approach 2:
The device uses dynamic compression with controlled force application and release cycles. The mechanical system adjusts compression force dynamically through spring tension variations and cam profile design, delivering high force when needed while minimizing sustained pressure that could cause trauma.
Data Source
Figure 1a~1b
Figure 1c~1f
Figure 2a~2c
AI summary
The present subject matter relates to a cardio pulmonary resuscitation (CPR) device (102) including a backboard (110) to support a subject, and a constriction element (112) to constrict the subject. The constriction element (112) is connected to a decompression element (118). The decompression element (118) is disposed to be placed along the circumference of a thoracic region of the subject and is adapted to adhere to the subject on deployment. Further, a sternum compression unit (120) is attached to the decompression element (118) such that the sternum compression unit(120) is disposed on a side of the decompression element (118).Further, the constriction element (112) is adapted to be constricted and to be slackened for delivering active sternum compression, active circumferential compression, active sternum decompression and active circumferential decompression.