Exudate self-adjusting composite dressing and preparation method thereof

Abstract

The invention discloses an exudate self-adjusting composite dressing and a preparation method thereof. The dressing consists of a contact layer composed of a porous super-hydrophobic modified polyurethane film and a porous antibacterial super-hydrophilic composite film, water absorption foam serving as a middle layer, and a breathable adhesive tape serving as an outer layer. The preparation methodcomprises the following steps: superposing and combining a polyurethane film subjected to graft modification to realize super-hydrophobicity and an antibacterial super-hydrophilic film taking polyvinyl alcohol as a base material so as to form the contact layer, and performing punching, wherein the pore diameter is 50-300 microns; and bonding the contact layer with the medical water absorption foam, and bonding and covering a breathable film on an obtained product. According to the exudate self-adjusting composite dressing, through the design of the super-hydrophobic film / antibacterial super-hydrophilic contact layer and the coordination effect of the four layers, the exudate self-adjusting function is achieved, wound exudate can be absorbed, the surface of a wound is kept moist, wound healing is promoted, impregnation can be prevented, bacteria are resisted, infection is prevented, and surrounding skin is protected.

Description

technical field [0001] The invention belongs to the technical field of novel medical dressings, and specifically relates to a medical dressing that can prevent impregnation, antibacterial and anti-infection, protect surrounding skin, absorb wound exudate, automatically keep the wound surface moist, and promote wound healing. [0002] technical background [0003] Wound dressing is one of the effective means of treating various types of skin injuries. For wound care and rehabilitation of patients, a wound dressing that can manage wound exudate and promote wound healing is necessary. The fastest wound healing environment is clean, moist (not humid), free from trauma and bacterial invasion. An ideal dressing should control exudate without drying the wound; act as a bacterial barrier; allow non-traumatic excision without dressing residue in the wound; and provide adequate breathability to prevent overhydration of the wound and surrounding skin. However, different wound types and...

AI Technical Summary

Problems solved by technology

[0007] Aiming at solving the problems of exudate regulation and management during the healing process, wound adhesion, and susceptibility to infection, the purpose of the present invention is to provide a device that can prevent impregnation, antibacterial and anti-infection, protect the surrounding skin, absorb wound exudate, and automatically maintain the wound. Medical dressings that moisten the surface and promote wound healing

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