Percutaneous Occluder for Targeted Vessel Hemostasis
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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 and techniques that allow for percutaneous deployment of occluders to specifically target and control blood vessels, using cooperating occluder elements that can be deployed upstream or downstream of the hemorrhage site, enabling variable occlusion levels and minimally invasive placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a tourniquet is used to control extremity bleeding, then blood flow to the entire limb is limited, but it cannot target individual blood vessels within the limb
Solution Approach 1:
The occlusion device applies compression force locally at the site of blood loss rather than uniformly across the entire limb. The device includes a compressible element that can be positioned directly over the injured blood vessel to provide targeted occlusion, allowing blood flow to be controlled at specific locations while maintaining circulation in other areas of the limb.
2Reliability
If a tourniquet is applied to control bleeding, then compression can be applied, but it limits blood flow to the entire limb
Solution Approach 1:
The device concentrates compression force at the specific site of vascular injury through a localized compressible element, achieving reliable hemostasis without restricting blood flow to the entire limb. This localized approach allows blood to continue flowing through unaffected vessels and tissues.
3Speed
If conventional compression is used, then it can be applied quickly, but it cannot provide adequate compression to major blood vessels
Solution Approach 1:
The device is pre-assembled with the compressible element and positioning features ready for immediate deployment. The design allows for rapid application to major blood vessels without requiring complex assembly or adjustment, achieving both quick deployment and effective compression through its pre-configured structure.
4Adaptability or versatility
If a targeted occlusion device is deployed percutaneously, then specific blood vessels can be targeted, but the device complexity increases
Solution Approach 1:
The device uses localized structural features such as position indicators and compressed state indicators to simplify operation and deployment. These localized indicators provide visual feedback to guide proper positioning and compression, reducing the complexity of the overall device while maintaining high targeting precision for specific blood vessels.
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 solution provides a targeted and effective method to control major blood vessel hemorrhage, allowing for minimal supervision during transport to specialized care and facilitating easier removal and hemostasis post-treatment, reducing blood loss and mortality risks.
Implementation Method 1
The occluders may be moved toward one another to a程度 to urge the blood vessel walls together to occlude the blood vessel
Data Source
AI summary
Methods and devices for temporarily occluding blood vessels are provided for use in emergency conditions to control trauma-induced hemorrhaging. An occlusion device is delivered and deployed through a rapidly introduced, percutaneously placed needle that carries an occlusion device in readiness to be deployed out of the needle. The deployed occlusion device applies pressure to the target blood vessel to control blood loss.