Method and system for producing dressing products of polymer fibres useful for covering moist wounds

Abstract

The invention provides a method and system for producing an improved dressing product, useful for covering / protecting a moist wound. The dressing product comprising fibres of a spinnable polymer forming a twisted ribbon. By virtue of this twisting, the fibres, in particular at the periphery of the ribbon, are connected to one another so as to afford better mechanical cohesion and a smoother outer appearance, without affecting the action of absorption, dilation and gel formation for extracting the biological fluid, nor the action of retention of proteins and other cellular and bacterial waste matter which would impede the phenomenon of cicatrization. The ribbon twisting equipment comprises a conical bowl (1) for driving fibres in rotation with a twisting die (3) in its narrowed downstream part (2), and a means (4) for driving in rotation.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention generally relates to dressing products such as a bandage or other sterile covering that is put on a wound to protect it from infection or further damage. More particularly, the present invention concerns a dressing product composed of fibres of a spinnable polymer, and a method and system for producing the dressing product, useful for covering haemostatic as well as exudative wounds. [0003] 2. Description of the Related Art [0004] Dressing products, in the form of a ribbon or wick, are often used for moist wounds that produce exudates, for example, bedsores, post-operative wounds, and deep wounds such as cavities. Dressing products can also be used in intranasal surgery, in the upper airways of the nasal fossae, or for stopping nose bleeds with short wicks, which is also called tampons. [0005] In making most prior art dressing products, consideration is often given to an alginate of a metal cho...

AI Technical Summary

Benefits of technology

[0012] An object of the present invention is to provide a dressing product which has the same desirable properties as that of the prior art dressing products but without their undesirable features. That is, the dressing product should be more easily removed from a wound in its entirety and without causing pain.

[0013] This object is achieved in a dressing product comprising fibres of a spinnable polymer forming a twisted ribbon. By virtue of this twisting, the fibres, in particular at the periphery of the ribbon, are connected to one another so as to afford better mechanical cohesion and a smoother outer appearance, without affecting the action of absorption, dilation and gel formation for extracting the biological fluid, nor the action of retention of proteins and other cellular and bacterial waste matter which would impede the phenomenon of cicatrization.

[0014] The twisted ribbon advantageously comprises a traceability filament, which is made possible by virtue of the cohesion of the fibres. The benefit of such a filament is that this avoids leaving the dressing in a body cavity. In some embodiments, it is a radiopaque filament, since radiological detection is the customary procedure when there is any doubt as to whether all the products have been removed after a surgical intervention.

Problems solved by technology

However, it damages and more generally affects the integrity of the mechanical structure of the dressing, e.g., a wick, so that the dressing cannot be removed from the wound in one piece and without pain.

The aforementioned undesirable features of the prior art dressings are directly related to the underlying production material and method.

The dressing therefore cannot be removed from wounds in its entirety and without causing pain.

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