Segmented Suction Cup Chest Compression Device
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Solution Overview
Problem
Current automated chest compression devices for cardiopulmonary resuscitation (CPR) struggle to maintain adequate blood flow and decompression forces, often leading to ineffective resuscitation due to the limitations of single large suction cups, which can cause injury and fail to sustain cardiac arrest victims for extended periods.
Innovation Solution
A piston-based chest compression device with multiple small suction cups that engage the patient's chest, providing balanced compression and decompression forces, and a detachable plunger adapter with controlled attachment mechanisms to prevent excessive force, ensuring improved surface conformance and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a single large suction cup is used for chest decompression, then the decompression force is sufficient, but the risk of tissue injury increases and surface conformance is poor
Solution Approach 1:
The patent divides a single large suction cup into multiple smaller suction cups arranged in an array. This segmentation allows the decompression force to be distributed across multiple contact points, reducing the pressure and injury risk on any single area of tissue while maintaining overall decompression effectiveness. The multiple smaller cups also better conform to the curved surface of the chest.
2Force
If a single large suction cup is used for chest decompression, then the decompression force is sufficient, but the surface conformance and attachment reliability are poor
Solution Approach 1:
The suction cup is segmented into multiple smaller units that can independently conform to the curved surface of the chest. This array of smaller suction cups provides better surface adaptation and more reliable attachment compared to a single large cup, while still generating sufficient collective decompression force.
Solution Approach 2:
Each suction cup in the array can independently adapt to local surface variations on the chest, providing localized conformability. This local quality approach ensures reliable attachment across the irregular surface while maintaining overall system effectiveness.
3Productivity
If manual CPR is performed with adequate chest compressions, then blood flow is maintained at 25-30% of normal, but the provider cannot maintain adequate compressions for more than a few minutes
Solution Approach 1:
The mechanical CPR device performs chest compressions autonomously without requiring continuous human effort. The device incorporates mechanisms for automatic compression and decompression, allowing sustained operation for extended periods beyond the capability of manual providers. This self-service capability enables maintenance of adequate blood flow for the duration needed for successful resuscitation.
4Speed
If active compression/decompression technique is used with a suction cup, then chest expansion is accelerated, but the suction cup may cause tissue injury due to excessive force
Solution Approach 1:
The array of multiple smaller suction cups distributes the lifting force across several contact points, preventing any single point from exerting excessive force on the tissue. This segmentation enables rapid chest expansion while minimizing the risk of tissue injury associated with concentrated forces.
Solution Approach 2:
The device controls the parameters of decompression by adjusting the suction force and duration applied by each individual suction cup in the array. This parameter control allows optimization of chest expansion speed while maintaining tissue safety thresholds.
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 achieves enhanced chest decompression and compression forces, reducing the risk of injury and enabling extended CPR efforts, potentially increasing the chances of survival for cardiac arrest victims by maintaining effective blood flow and preventing tissue damage.
Implementation Method 1
suction created between the suction cups and the chest helps secure the compression pad to the chest
Implementation Method 2
The pressure difference between the atmosphere on the outside of the cup is what keeps the cup adhered to the surface
Implementation Method 3
As the material of the compression pad tends to resume its original shape when lifted
Data Source
AI summary
A plunger adapter and a detachable compression pad for piston driven chest compression devices optimizes the application of chest compressions to a fixed location on a patient's chest. The detachable compression pad may be removably secured to the patient above the patient's sternum to ensure that the compression pressure from the piston through the piston adapter is applied to a fixed location on the patient's chest. As the plunger and plunger adapter retract from the chest, the compression pad remains fixed to the patient's chest, and as the plunger and plunger adapter extend from the chest compression unit for subsequent compression strokes, the distal end of the plunger adapter reengages the compression pad to apply compression to a fixed location on the patient's chest.