Segmented Temporary Blood Vessel Occlusion Device
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Solution Overview
Problem
Current methods for controlling blood loss in trauma cases, such as tourniquets, are ineffective in targeting specific blood vessels and can lead to inadequate compression, resulting in significant mortality due to uncontrolled hemorrhage.
Innovation Solution
Development of temporary occlusion devices that can be percutaneously deployed to specifically target and occlude blood vessels using cooperating occluder elements, allowing for variable occlusion levels and ease of removal, suitable for both military and civilian trauma scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional tourniquet is used to control extremity bleeding, then blood loss from the limb is reduced, but the entire limb loses blood flow and cannot target individual blood vessels
Solution Approach 1:
The tourniquet device is divided into multiple independent cells or compartments that can be individually activated. Each cell can apply occlusion force to a specific region or blood vessel within the limb, allowing selective targeting while maintaining overall hemorrhage control. This segmentation enables the device to address multiple bleeding sites simultaneously with different occlusion levels.
Solution Approach 2:
The tourniquet incorporates regions with different occlusion characteristics - some areas provide high compression for major vessel control while other areas provide lower compression for distal perfusion maintenance. The device can selectively apply different forces to different parts of the limb, creating local quality variations that optimize both hemorrhage control and tissue perfusion.
2Reliability
If a tourniquet applies compression to control bleeding, then hemorrhage is reduced, but it cannot be adjusted to provide variable occlusion levels for different vessels
Solution Approach 1:
The tourniquet device incorporates dynamic adjustment mechanisms that allow real-time modification of occlusion levels and duration. Each cell or compartment can be independently adjusted during deployment, enabling the operator to optimize occlusion force for each specific bleeding site. The device can transition between different occlusion states (full occlusion, partial occlusion, selective occlusion) based on clinical needs.
Solution Approach 2:
The tourniquet is designed with pre-configured cells or compartments that are prepared in advance for selective activation. The device structure anticipates the need for variable occlusion levels by incorporating multiple ready-to-use occlusion elements that can be deployed in a predetermined sequence or selectively activated based on the specific trauma pattern.
3Ease of operation
If a single occlusion device is used for the entire limb, then application is simple, but it cannot provide targeted occlusion of specific blood vessels
Solution Approach 1:
The tourniquet is divided into multiple modular cells or segments that can be independently controlled. Each segment corresponds to a specific anatomical region or vessel level, allowing precise targeting while maintaining a relatively simple overall application process. The modular design enables the operator to activate only the necessary segments rather than the entire device.
Solution Approach 2:
The tourniquet device is designed to perform multiple functions through its segmented structure - it can provide overall limb occlusion when all cells are activated, selective occlusion of specific vessels when individual cells are activated, and graduated compression when cells are activated in sequence. This multi-functionality allows a single device to replace multiple specialized occlusion tools.
Data Source
AI summary
Methods and devices for temporarily occluding blood vessels are provided for use in emergency conditions to control trauma-induced hemorrhaging.