Clay-Based Hemostatic Gauze for Rapid Blood Clotting
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Solution Overview
Problem
Existing hemostatic agents and devices often fail to effectively control severe bleeding, especially in remote or battlefield situations, due to inefficacy, high cost, and potential for causing discomfort or tissue damage from exothermic reactions, and are difficult to apply and remove.
Innovation Solution
The use of clay-based hemostatic agents, such as kaolin, in various forms like particles, gauze substrates, and sponges, which come into contact with blood through mesh or gauze structures, promoting clotting without exothermic reactions and facilitating easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hemostatic agents are used to control severe bleeding, then bleeding control may be achieved, but they cause exothermic reactions that lead to tissue damage and patient discomfort
Solution Approach 1:
The patent changes the chemical parameters of hemostatic agents by using clay materials with specific properties (kaolin, bentonite, attapulgite) that promote clotting through absorption and contact activation without exothermic reactions. This parameter change eliminates the harmful thermal effect while maintaining hemostatic effectiveness
Solution Approach 2:
The patent employs disposable clay-based hemostatic devices that are single-use, eliminating the need for complex sterilization and reducing the risk of infection. These disposable devices include clay-coated sponges, gauzes, and pellets that are discarded after one use, ensuring safety and simplicity in battlefield and remote settings
2Reliability
If expensive specialized equipment and materials are used for severe bleeding control, then effective hemostasis can be achieved, but cost becomes prohibitive for remote or battlefield situations
Solution Approach 1:
The patent utilizes inexpensive clay materials (kaolin, bentonite, attapulgite) that are abundant and can be manufactured at low cost. These materials are applied in disposable forms such as coated gauzes, sponges, or pellets, providing effective hemostasis without the high costs associated with traditional specialized equipment and materials
Solution Approach 2:
The patent creates simplified versions of complex hemostatic systems by using clay-based agents that replicate the essential clotting-promoting functions of expensive specialized materials. The clay devices copy the hemostatic effect through absorption and contact activation, providing equivalent performance at a fraction of the cost
3Reliability
If existing hemostatic materials are applied to wounds, then bleeding control may be achieved, but they are difficult to remove and require extensive irrigation
Solution Approach 1:
The patent employs disposable clay-based devices that are designed to be easily removed after use. The clay coating on gauzes, sponges, or pellets does not adhere strongly to tissue, allowing for simple removal without extensive irrigation or complex procedures, maintaining both effectiveness and ease of operation
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 clay-based agents effectively control bleeding by absorbing blood components, minimizing discomfort, and allowing easy removal without damaging tissues, making them suitable for diverse applications including pediatric and sensitive areas.
Implementation Method 1
The clay-based agents effectively control bleeding by absorbing blood components
Data Source
AI summary
A hemostatic device for promoting the clotting of blood includes a gauze substrate, a clay material disposed on the gauze substrate, and also a polyol such as glycerol or the like disposed on the gauze substrate to bind the clay material. When the device is used to treat a bleeding wound, at least a portion of the clay material comes into contact with blood emanating from the wound to cause the clotting. A bandage that can be applied to a bleeding wound to promote the clotting of blood includes a flexible substrate and a gauze substrate mounted thereon. The gauze substrate includes a clay material and a polyol. A hemostatic sponge also includes a gauze substrate and a dispersion of hemostatic material and a polyol on a first surface of the substrate.