Kaolin Hemostatic Composition Viscosity and Particle Control
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Solution Overview
Problem
Current methods for controlling excessive bleeding, especially in difficult-to-reach areas or during surgery, are inadequate as they often rely on simple pressure or absorbent materials that may not be sufficient to manage significant bleeding effectively.
Innovation Solution
A hemostatic composition comprising clay dispersed in a liquid medium, specifically kaolin in an aqueous solution, which is sterilized and has a viscosity of 1000 cP or less, allowing for effective blood clotting without visible particles and maintaining stability for extended periods, even under centrifugal force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clay is dispersed in liquid medium to create hemostatic composition, then blood clotting effectiveness is improved, but visibility of particles and potential obstruction of application may worsen
Solution Approach 1:
The patent applies parameter changes by controlling the particle size distribution of clay (specifically kaolin) with at least 50% of particles in the range of about 1 nm to about 1000 nm, and adjusting the clay concentration to less than about 10% by weight. These parameter changes ensure the composition remains substantially free of visible particles while maintaining effective hemostatic activity.
2Reliability
If clay concentration is increased to enhance hemostatic effect, then blood clotting promotion is improved, but viscosity of composition increases making application difficult
Solution Approach 1:
The patent optimizes the clay concentration parameter to be less than about 10% by weight of the composition. This parameter change balances hemostatic effectiveness with acceptable viscosity (about 1000 cP or less) for easy application and flowability during surgical procedures.
3Ease of operation
If clay particle size is reduced to improve dispersion and reduce visibility, then ease of application is improved, but stability of dispersion under centrifugal force may worsen
Solution Approach 1:
The patent specifies a particle size distribution where at least 50% of kaolin particles are in the range of about 1 nm to about 1000 nm, with the first component having smaller average particle size than the second component. This parameter change achieves a balance between adequate dispersion (ease of application) and sufficient stability under centrifugal force.
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 composition promotes efficient blood clotting in both normal and compromised individuals, including those on anticoagulant drugs or with clotting disorders, by providing a stable and effective hemostatic agent that can be easily applied to bleeding sites, reducing bleeding effectively.
Implementation Method 1
Compositions comprising a clay, or a component of a clay, dispersed in a liquid medium can be useful as hemostatic or blood-clotting compositions or agents
Data Source
AI summary
Compositions that include a clay such as kaolin dispersed in a liquid such as water may be useful for promoting the clotting of blood. The compositions may be in a liquid, gel, paste, foam, or another form. Uses may include treating a traumatic injury such as in injury caused by a bullet, an explosive, a blade etc., or an injury caused during a medical procedure such as surgery.