Spontaneous fluid transport dressing based on continuous asymmetric super-hydrophilic channel and preparation method of spontaneous fluid transport dressing

Abstract

The invention provides a spontaneous fluid transport dressing based on continuous asymmetric super-hydrophilic channels and a preparation method thereof, the dressing comprises: a porous water absorption layer for absorbing and discharging liquid; the base layer is provided with a through liquid conveying channel used for conveying liquid to the porous water absorption layer, the liquid conveying channel comprises a through hole and a hydrophilic channel which are communicated with each other, openings, close to the porous water absorption layer, of the two ends of the hydrophilic channel are closed, openings, close to a wound, of the two ends of the hydrophilic channel are opened, and the width of the openings is larger than that of the closed openings. The dressing is directly attached to the upper portion of an ulceration wound, and the base layer of the liquid conveying channel with the communicating structure is tightly combined with the wound. Under the driving of capillary force, wound exudate is spontaneously enriched in the hydrophilic channel and is outwards transported into the porous water absorption layer through the through hole structure, so that in-situ separation and active discharge of the wound exudate are realized.

Description

technical field [0001] The invention belongs to the field of medical devices and materials, in particular to a spontaneous fluid transport dressing based on a continuous asymmetric superhydrophilic channel and a preparation method thereof. Background technique [0002] Using the special interaction between the interface and the fluid to control the collection behavior of the fluid is a key issue in today's materials science research. In disaster medicine, emergency treatment and protection of ruptured wounds is an important means to improve the survival rate of the wounded. The use of dressings for hemostasis is a common method for treating such wounds. However, in existing studies, the dressings used are mostly simple plugging, which cannot actively drain the extravasated fluid from the ruptured site, resulting in secondary infection of the wounded and wounds. Healing slows down. On the other hand, the continuous discharge of extravasated liquid cannot be achieved by usin...

AI Technical Summary

Problems solved by technology

The use of dressings to hemostatic treatment is a common method for this type of wound treatment. However, in the existing studies, most of the dressings used are simply blocked, which cannot actively discharge the extravasated fluid from the ulceration, resulting in secondary infection and wound wounds. slowed healing

On the other hand, the continuous discharge of extravasated fluid cannot be achieved with simple liquid-absorbent dressings

When changing the absorbent dressing, it will also cause secondary damage to the wounded wound

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