Gelatin-Modified Kaolin Hemostatic Powder Adhesion
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Solution Overview
Problem
Current kaolin-based hemostatic products, such as gauzes and dressings, face challenges with kaolin powder easily detaching from the gauze, reducing hemostatic effectiveness, and being unsuitable for deep or irregular wounds.
Innovation Solution
A kaolin-based composite hemostatic powder is developed by modifying kaolin with gelatin, which improves tissue adhesion, biocompatibility, and hemostatic performance through a simple and eco-friendly preparation method involving mixing, lyophilization, and grinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If kaolin is used directly as a hemostatic powder, then the mechanical strength is improved, but the tissue adhesion deteriorates
Solution Approach 1:
The patent combines kaolin particles with gelatin to form a composite hemostatic powder. The gelatin component provides tissue adhesion properties while the kaolin provides mechanical strength and hemostatic functionality. This composite structure resolves the contradiction by integrating materials with complementary properties rather than using kaolin alone.
2Ease of manufacture
If kaolin powder is attached to gauze through simple impregnation, then the ease of manufacture is improved, but the reliability deteriorates due to powder detachment
Solution Approach 1:
Instead of simply impregnating kaolin powder onto gauze, the patent creates a composite material where gelatin binds the kaolin particles together and to the gauze substrate. This composite approach maintains manufacturing simplicity while preventing powder detachment, thereby preserving hemostatic effectiveness.
3Ease of operation
If kaolin hemostatic gauze is designed for superficial wounds, then the ease of operation is improved, but the adaptability deteriorates for deep and irregular wounds
Solution Approach 1:
The patent transforms kaolin from a rigid powder into a flexible composite powder by combining it with gelatin. This parameter change in material flexibility and form allows the hemostatic agent to adapt to various wound depths and irregular shapes, while the powder form maintains ease of application.
4Speed
If zeolite hemostatic powder is used, then the hemostatic speed is improved, but the object-generated harmful factors worsen due to exothermic phenomenon
Solution Approach 1:
The patent changes the material composition from zeolite to a kaolin-gelatin composite, which alters the thermal properties of the hemostatic agent. The kaolin-gelatin composite does not exhibit the exothermic phenomenon of zeolite, eliminating tissue burning risk while maintaining effective hemostatic speed through kaolin's inherent properties.
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 gelatin-modified kaolin hemostatic powder exhibits enhanced skin adhesion, improved in vitro hemostasis, and excellent biocompatibility, effectively addressing the limitations of previous kaolin powders and enabling better hemostasis for various wound types.
Implementation Method 1
The gelatin adopted by the present disclosure has temperature sensitivity and excellent biocompatibility. The large number of amino, carboxyl, and hydroxyl functional groups on the macromolecular chains of the gelatin can interact with amino groups on the skin surface to form hydrogen bonds, which improves the tissue adhesion of the kaolin hemostatic powder
Implementation Method 2
thoroughly mixing a gelatin and kaolin in a solvent to produce a mixed solution, lyophilizing the mixed solution to remove the solvent
Data Source
AI summary
The present disclosure discloses a kaolin-based composite hemostatic powder and a preparation method thereof. The present disclosure relates to the technical field of hemostatic powders. The kaolin-based composite hemostatic powder is gelatin-modified kaolin. The preparation method includes: thoroughly mixing a gelatin and kaolin in a solvent to produce a mixed solution, lyophilizing the mixed solution to remove the solvent, and grinding into a powder to produce the kaolin-based composite hemostatic powder. The prepared gelatin-modified kaolin hemostatic powder exhibits excellent effects in skin adhesion, in vitro hemostasis, and hemocompatibility experiments, and breaks the limitations of the previous kaolin powders in hemostasis.