Hydrophilic Hemostatic Foam Article for Uniform Wound Coverage
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Solution Overview
Problem
Existing wound management technologies face challenges in uniformly and efficiently applying clot-enhancing materials to wound sites, particularly at vascular puncture and percutaneous catheter sites, often leading to material wastage and inefficiencies in clot formation.
Innovation Solution
A hemostatic surface application device featuring a non-dissolvable hemostatic foam with a release layer, structural foam layer, and support layer, designed for direct application over wounds to enhance clot formation and reduce bleeding, using polysaccharide foam compositions that retain moisture and promote clotting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional wound management methods are used to apply clot-enhancing materials, then material can be applied to wound sites, but uniform and efficient application is difficult leading to material wastage
Solution Approach 1:
The hemostatic foam is pre-applied to the wound site before the puncture or catheter insertion occurs. This preliminary application ensures the clot-enhancing material is already in position and can immediately interact with blood upon vessel puncture, eliminating the need for subsequent material application and ensuring efficient, uniform coverage without waste.
Solution Approach 2:
The hemostatic foam acts as an intermediary substance between the wound site and the blood. It provides a controlled interface that enhances clot formation through its polysaccharide composition, which retains moisture and promotes coagulation, while preventing uncontrolled material transfer into the wound.
2Reliability
If hemostatic foam is applied to retain moisture and promote clotting, then clot formation is enhanced, but material may transfer into the wound
Solution Approach 1:
The hemostatic foam is designed with specific local properties at the wound interface - its polysaccharide composition provides moisture retention and clot-promoting qualities exactly where needed at the blood-contact interface, while the overall foam structure controls material transfer. The foam's physical and chemical properties are optimized locally to enhance clotting without causing harmful material migration into the wound.
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 effectively retains 99.5% of its weight when in contact with blood, promoting rapid clotting and minimizing material transfer into the wound, thus enhancing wound healing and reducing bleeding.
Implementation Method 1
A blood-flow reducing, hemostatic surface application device, which resists or eliminates transfer of clotting material into a wound... The hemostatic flexible foam layer should be able to retain at least 99.5% of total weight of the hemostatic flexible foam layer when in contact with a surface having a 5 micron thick layer of water on its surface for 1 minute... The hemostatic flexible foam layer may include a polysaccharide foam composition
Implementation Method 2
The device effectively retains 99.5% of its weight when in contact with blood, promoting rapid clotting and minimizing material transfer into the wound, thus enhancing wound healing and reducing bleeding
Data Source
AI summary
A hemostatic surface application device having a region of hemostatic foam for contact with a patient's skin where a wound exists or is created, the device includes: a release layer, the release layer in contact with a hemostatic flexible foam section, and a structural foam layer having a front side and a back side surrounding the hemostatic flexible foam layer, forming a generally central hemostatic surface exposed through the front side of the surrounding structural foam layer, and a support layer adhered to the backside of the structural foam layer.