The utility model content
The application's purpose be to provide a kind of for transudate seriously or comparatively serious wound and have the functional type polyurethane foam dressing that is conducive to wound healing.
For achieving the above object, adopted following technical scheme among the application:
The application discloses a kind of functional type polyurethane foam medical dressing, and this polyurethane foam medical dressing comprises polyurethane flexible foam body and auxiliary layer, and auxiliary layer fits tightly in the one side of polyurethane flexible foam body.
Above-mentioned auxiliary layer comprises antibacterial layer or medicine layer.
The edge thickness of above-mentioned polyurethane flexible foam body is less than the centre.
In the application's a specific embodiment, above-mentioned functions type polyurethane foam medical dressing also comprises the thin polyurethane rete, and auxiliary layer, polyurethane flexible foam body and thin polyurethane rete are cascading.
Above-mentioned thin polyurethane rete is connected with the one side heat seal of above-mentioned polyurethane flexible foam body.
The application's beneficial effect is the medical dressing that adopts polyurethane flexible foam body and auxiliary layer to consist of, its auxiliary layer can be medicinal ingredient or the antimicrobial component that wound provides various hemostasis or is conducive to wound healing, this is so that this medical accessory outside absorbing the wound sepage, also can provide to the wound of the special healing of needs the assisted care of difference in functionality.The polyurethane flexible foam body has good biocompatibility; its polyurethane flexible foam body has abundant loose structure; therefore has extremely strong hygroscopicity; and the good physical properties such as elasticity is high, Compressive Performance is good that the polyurethane flexible foam body has; there are good protection and cushioning effect in the position that can apply ointment or plaster and be difficult to cover at some human bodies to the skin of wound and wound perimeter.
The specific embodiment
Also by reference to the accompanying drawings the application is described in further detail below by specific embodiment.Below explanation should not be construed as the restriction to the application.
Embodiment 1
Please refer to Fig. 1, the structural representation of a kind of functional type polyurethane foam medical dressing A that Fig. 1 provides for this utility model, it comprises auxiliary layer 1 and polyurethane flexible foam body 2, both fit tightly as shown in the figure.
Auxiliary layer 1 is medicine layer, can be wound the active ingredient that helps heal is provided, and specifically can be the medicine layer of haemostatic medicament layer or other promotion wound healings.Auxiliary layer 1 directly overlays on the wound during use.By adopting the dressing of this structure, the active ingredient during use in its auxiliary layer 1 can fully be absorbed by wound, promotes the healing of wound.During this dressing of manufacture A, medicine can be made its one side that is attached to polyurethane flexible foam body 2 by modes such as sprayings, form auxiliary layer 1.
Wound fluid then is absorbed in the microcellular structure that enters polyurethane flexible foam body 1, then through capillary tension to external diffusion, volatilize at last in the entered environment, this moisture absorption mechanism has enlarged the ability of unit are dressing from wound surface eliminating liquid, makes it have long service life.Because its polyurethane flexible foam body has above-mentioned good transudate disposal ability, and wettability power is extremely strong, can reduce the replacing number of times, shorten wound healing time, alleviate simultaneously the patient suffering.On the other hand, because the polyurethane flexible foam body has good physical property, for example flexibility and elasticity, its flexibility can make its wound surface of well applying ointment or plaster, and reduces sense of discomfort and the pain of wound.And the high resiliency that it has, the various positions that are difficult to cover on human body so that it is convenient to apply ointment or plaster.On the whole, the Compressive Performance that the polyurethane flexible foam body is good can reduce the impact of wound on orthobiosis effectively.The thickness of polyurethane flexible foam body, size and shape, those skilled in the art can design according to concrete practical situation.
As shown in Figure 1, the edge thickness of the polyurethane flexible foam body 2 in this example is less than the centre, and is concrete, and the mind-set edge direction is successively decreased gradually in the edge thickness edge of polyurethane flexible foam body.The purpose of design is like this, and during actual this dressing of use, dressing can use adhesive tape or other medical material that dressing further is fixed on the wound after wound is had good positioning.Because the polyurethane flexible foam body has certain thickness, when adhesive tape etc. fixedly during dressing, easily because the thickness of polyurethane flexible foam body, so that adhesive tape etc. form a untight space in the edge of polyurethane flexible foam body.The thickness of polyurethane flexible foam body is depended in the formation in this space, and its thickness is larger, and the space of formation is larger.Because the immobilization materials such as adhesive tape not necessarily have the functions such as fungi-proofing, this space is easy to form the Potential passageway that antibacterial enters wound surface, thereby has affected the healing of wound surface, may cause the deterioration of wound when serious.On the other hand, this space also is the potential threat that forms the transudate side leakage.Therefore, the mind-set edge direction is successively decreased the edge thickness of polyurethane flexible foam body gradually in the edge, can so that the thickness of polyurethane flexible foam body present sloping shape in edge, make its edge better and the perfect applying such as skin and adhesive tape, and can not produce the space of being caused by difference in height.
Embodiment 2
Please refer to Fig. 2, the structural representation of a kind of functional type polyurethane foam medical dressing B that Fig. 2 provides for this utility model, it comprises auxiliary layer 1, polyurethane flexible foam body 2 and thin polyurethane rete 3, three such as figure are cascading.
Auxiliary layer 1 is the antibacterial layer in this example, is specially argentiferous class antibacterial layer, and this silver-containing antibacterial agent layer has broad-spectrum antibacterial action, can effectively resist the antibacterial in the wound, can reduce the inflammation of wound surface, helps prevention and the control infected.During this dressing of manufacture B, silver-containing antibacterial agent can be made its one side that is attached to polyurethane flexible foam body 2 by modes such as sprayings, form auxiliary layer 1.
The thin polyurethane rete 3 that fits tightly with polyurethane flexible foam body 2, be specially the elastic polyurethane thin film, its have ventilative, every the function of bacterium, waterproof, make wound surface keep certain temperature and humidity, thereby obtain a kind of " wound surface miniclimate " that is conducive to wound healing.Simultaneously, the resilient flexible that the elastic polyurethane thin film is good and resistance to tearing, can so that dressing move together along with skin and be difficult for destroyed.Those skilled in the art can be according to the concrete condition of polyurethane flexible foam body and dressing use, design and the applicable polyurethane film of selection.
Polyurethane flexible foam body 2 and thin polyurethane rete 3 in this example are heat sealing at together.Those skilled in the art can select other suitable modes that both are fitted tightly.
Medical dressing among the application adopts polyurethane flexible foam body and auxiliary layer as basic structure, and the polyurethane flexible foam body has good biocompatibility, can absorb preferably the wound sepage.Auxiliary layer is then so that this medical accessory except the effect of the absorption wound sepage of itself, has also had other certain functions.Those skilled in the art can according to the practical application of dressing, use the auxiliary layer with difference in functionality effect in this dressing.
Above-described embodiment is of the present utility model giving an example, although disclose for the purpose of illustration most preferred embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from this utility model and appended claim, various replacements, variation and modification all are possible.Therefore, this utility model should not be limited to most preferred embodiment and the disclosed content of accompanying drawing.