Segmented Hemostatic Vessel Band for Targeted Bleeding Control
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Solution Overview
Problem
During surgical procedures like aortic valve replacements and aneurysm treatments, persistent bleeding can occur at the aortic wall or other major vessels, necessitating effective measures to manage and prevent bleeding.
Innovation Solution
A hemostatic vessel band with a membrane and transverse cells that apply radially inward pressure to the vessel, forming isolation zones to isolate and compress bleeding sites, promoting hemostasis through radial compression and potential thrombogenic materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard anastomotic technique is used to close the aortic wall, then the vessel can be closed, but persistent bleeding may occur at the anastomosis site
Solution Approach 1:
The band is divided into multiple cells that can be independently inflated to target specific bleeding sites along the vessel, allowing precise hemostasis without requiring complex multi-step anastomotic procedures
Solution Approach 2:
The band transitions from a deflated state to an inflated state, changing its volume and pressure parameters to achieve vessel compression and hemostasis without requiring complex surgical closure techniques
2Reliability
If radially inward pressure is applied to the vessel to stop bleeding, then hemostasis is promoted, but the vessel surface may be damaged
Solution Approach 1:
The pressure application is segmented into multiple discrete cells rather than a single continuous band, distributing the compressive force across multiple localized points to achieve hemostasis while minimizing damage to the vessel surface
Solution Approach 2:
Each cell can be independently inflated to apply pressure only at the specific location of bleeding, concentrating the hemostatic effect where needed while leaving the rest of the vessel surface undamaged
3Adaptability or versatility
If a continuous band is used to apply pressure around the vessel, then hemostasis can be achieved, but bleeding from multiple sites cannot be targeted independently
Solution Approach 1:
The band is segmented into multiple independent cells that can be selectively inflated based on the location and severity of bleeding sites, providing adaptable multi-site bleeding management while maintaining a relatively simple overall band structure
Solution Approach 2:
The band transitions from a static structure to a dynamic one where individual cells can be independently activated and adjusted, allowing the device to adapt to various bleeding scenarios without requiring multiple separate devices
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 hemostatic vessel band effectively reduces bleeding by creating isolated zones that prevent blood flow between them, aiding in hemostasis and reducing the risk of future bleeding through radial pressure and thrombogenic promotion.
Implementation Method 1
The elastomeric material may provide at least a portion of the radially inward pressure
Data Source
AI summary
A hemostatic vessel band is provided. The hemostatic vessel band has a membrane. A plurality of cells extend transversely from a membrane second surface. Each of the cells has a cell chamber that is defined by the membrane second surface and a plurality of cell walls. When the hemostatic vessel band is selectively fastened circumferentially about a vessel to at least partially cover the target site. The hemostatic vessel band applies radially inward pressure to at least a portion of the vessel and at least a portion of the target site. Each cell chamber that is positioned transversely adjacent to at least a portion of the target site forms one isolation zone of a plurality of isolation zones. Each isolation zone is at least partially isolated from each of the other isolation zones and from any vessel surface adjacent to the isolation zone.