CN216724952U - Adhesive bandage - Google Patents
Adhesive bandage Download PDFInfo
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- CN216724952U CN216724952U CN202122760465.5U CN202122760465U CN216724952U CN 216724952 U CN216724952 U CN 216724952U CN 202122760465 U CN202122760465 U CN 202122760465U CN 216724952 U CN216724952 U CN 216724952U
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Abstract
The utility model provides a wound plaster, wherein in the first stage of using the wound plaster, a hemostatic material layer is covered on a wound to play a role in hemostasis and debridement, after about 20-30min, the wound achieves the purpose of hemostasis, the hemostatic material layer is torn off, and in the second stage, only a transparent breathable medical material layer is kept to be pasted on the wound, so that on one hand, the wound plaster can be prevented from being stimulated and polluted due to insufficient use time and young and tender wounds; on the other hand because transparent ventilative medical material layer can let the user see the healing status of wound, if medical treatment does not in place and arouse the infection, can discover and reprocess the very first time to accurate judgement band-aid's live time tears transparent ventilative medical material layer promptly after the wound healing, prevents that the live time is too long wound edema, blushing, bacterium secondary infection.
Description
Technical Field
The utility model relates to the technical field of wound dressings, in particular to a wound dressing.
Background
The wound plaster, also called as hemostatic plaster, has the functions of hemostasis and wound protection. Due to the structural limitation of the wound paste, the wound paste can only be used for emergency treatment of small wounds, thereby playing the roles of debridement, hemostasis and wound surface protection. However, the bandage is not suitable for long time, if the bandage is used for a long time, the adhesive plaster on the outer layer of the bandage is not breathable, so that the wound and the skin around the wound are whitened, edematous and softened, the secondary infection of bacteria is caused, and the wound is further worsened.
When all non-liquid wound plasters protect superficial cuts or wounds, the protected cuts or wounds cannot meet the requirements due to gas exchange about 20-30min later, so that the wounds are subjected to edema, namely the surface skin is whitish and the skin wound edges are raised, and the natural healing of tissues is affected although the aim of stopping bleeding is fulfilled. If the wound paste is torn off after hemostasis of the wound, the wound surface or the incision exposed to the natural environment has the possibility of secondary infection.
Because the wound plaster in the prior art can not see the wound healing degree by naked eyes, the use time can not be judged, phenomena such as wound edema and infection are caused by long-time use, the use time is short, the wound is not tender, stimulation and pollution can be caused again, and red swelling and hot pain infection symptoms are caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a wound plaster, which solves the problems that the wound plaster in the prior art cannot judge the use time, causes wound edema and infection after long-time use, does not cause young and tender wounds to be stimulated and polluted again, and causes red swelling and hot pain infection.
The utility model provides a wound covering, comprising:
a layer of haemostatic material for covering the wound;
the base material layer is used for arranging the hemostatic material layer and fixing the wound plaster on a wound;
wherein the substrate layer comprises a transparent breathable medical material layer, and the transparent breathable medical material layer and the hemostatic material layer can be torn off to fix the transparent breathable medical material layer on the wound independently.
In one embodiment, the substrate layers include a first substrate layer and a second substrate layer, and the wound covering includes:
the first substrate layer comprises a first surface and a second surface which are opposite, and the hemostatic material layer is fixed on the first surface;
the second substrate layer is fixed on the second surface in a tearing way and is a transparent breathable medical material layer, and the second substrate layer comprises a third surface fixed on the second surface and a fourth surface opposite to the third surface;
the wound plaster is fixed on the wound through the first base material layer or the second base material layer, and the second base material layer is fixed on the wound independently after being torn off from the wound plaster.
Further, the wound covering also includes:
the first adhesive layer is arranged on the first surface of the first base material layer and used for fixing the wound covering on a wound;
and the second adhesive layer is arranged on the third surface or the fourth surface of the second substrate layer and is used for independently fixing the second substrate layer which is torn off from the wound cover on the wound.
Optionally, the second adhesive layer is disposed on a third surface of the second substrate layer, and the second substrate layer is detachably fixed on the second surface through the second adhesive layer.
Further, the wound covering also includes:
the third adhesive layer is arranged on the second surface of the first base material layer;
a first release paper layer that conforms to the second adhesive layer and the third adhesive layer.
Optionally, the layer of haemostatic material is secured to the first surface by the first layer of adhesive.
Optionally, the first adhesive layer, the second adhesive layer and the third adhesive layer comprise any one of medical non-toxic water latex, medical pure natural maleic glue, medical acrylic coating and medical non-toxic solvent glue.
In one embodiment, the wound covering is fixed on the wound through the second substrate layer, and the second substrate layer is separated from the wound covering and then is independently fixed on the wound.
In another embodiment, the substrate layer is a transparent, breathable medical material layer, and the wound covering further comprises:
the adhesive layer A is arranged on one side of the transparent breathable medical material layer and is used for fixing the transparent breathable medical material layer on a wound;
a second release paper layer disposed on the A adhesive layer;
a B adhesive layer disposed on the second release paper layer, the hemostatic material layer disposed on the B adhesive layer.
More preferably, the wound covering further comprises:
and the uncovering devices are oppositely arranged at two ends of the base material layer and are used for covering the base material layer, fixing the wound plaster on one surface of the wound and covering the hemostatic material layer.
Optionally, the transparent breathable medical material layer comprises any one of polyurethane-based plastics, copolyether ester film, polyethylene terephthalate, polyethylene and polypropylene blends.
Optionally, the hemostatic material layer comprises a composite of medical spun cotton and a water absorbent material, the composite being impregnated with a hemostatic and anti-inflammatory drug.
The beneficial effects of the utility model at least comprise:
the wound plaster comprises a hemostatic material layer and a substrate layer, wherein the substrate layer is used for arranging the hemostatic material layer and fixing the wound plaster on a wound; wherein, the substrate layer includes transparent ventilative medical material layer, and transparent ventilative medical material layer can be torn off with the hemostatic material layer to fix transparent ventilative medical material layer at the wound alone. In the first stage of using the adhesive bandage, the adhesive bandage is not different from a common adhesive bandage, the wound is covered by the hemostatic material layer to play a role in stopping bleeding and clearing the wound, the wound achieves the aim of stopping bleeding after about 20-30min, the hemostatic material layer is torn off, and the transparent breathable medical material layer is only kept to be adhered to the wound in the second stage, so that on one hand, the adhesive bandage can be prevented from being short in use time, and young and tender wounds are stimulated and polluted; on the other hand because transparent ventilative medical material layer can let the user see the healing status of wound, if medical treatment does not in place and arouse the infection, can discover and reprocess the very first time to accurate judgement band-aid's live time tears transparent ventilative medical material layer promptly after the wound healing, prevents that the live time is too long wound edema, blushing, bacterium secondary infection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a schematic structural view of a wound covering according to an embodiment of the utility model;
fig. 2 shows a schematic structural view of a wound covering according to another embodiment of the utility model;
fig. 3 shows a schematic structural view of a wound covering of another embodiment of the utility model;
fig. 4 shows a schematic structural view of a wound covering of another embodiment of the utility model;
fig. 5 shows a schematic structural view of a wound covering of a further embodiment of the utility model;
fig. 6 is a schematic diagram showing the construction of a wound covering according to yet another embodiment of the utility model;
fig. 7 shows a schematic structural view of a wound covering according to a further embodiment of the utility model;
fig. 8 shows a schematic structural view of a wound covering of another embodiment of the utility model;
fig. 9 is a schematic view showing a flow chart for preparing a wound covering according to an embodiment of the present invention;
fig. 10 is a schematic view showing a flow chart for preparing a wound covering according to another embodiment of the present invention.
Description of the main element symbols:
1-a first substrate layer; 2-a first adhesive layer; 3-a layer of haemostatic material; 4-a second substrate layer; 4' -a transparent, breathable medical material layer; 5-a second adhesive layer; 5' -a adhesive layer; 6-a third adhesive layer; 6' -B adhesive layer; 7-a first release paper layer; 7' -a second release paper layer; 8-lifting the device; 10-adhesive bandage.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The present invention provides a wound covering 10, please refer to fig. 1 or 5, including: a layer of haemostatic material 3 for covering the wound; the base material layer is used for arranging the hemostatic material layer 3 and fixing the wound plaster 10 on a wound; wherein the substrate layer comprises a transparent gas permeable medical material layer (4, 4 '), the transparent gas permeable medical material layer (4, 4 ') being tearable from the haemostatic material layer 3 to secure the transparent gas permeable medical material layer (4, 4 ') separately to the wound.
In the first stage of using the adhesive bandage 10, the adhesive bandage 10 is not different from a common adhesive bandage, the wound is covered by the hemostatic material layer 3 to play a role in hemostasis and debridement, the wound achieves the purpose of hemostasis after about 20-30min, the hemostatic material layer 3 is torn off, and only the transparent breathable medical material layer (4, 4') is kept to be adhered to the wound in the second stage, so that on one hand, the adhesive bandage 10 can be prevented from being short in use time, and the young wound is stimulated and polluted; on the other hand, the transparent air-permeable medical material layer (4, 4 ') can enable a user to see the healing condition of the wound, if infection is caused by insufficient medical treatment, the infection can be found and reprocessed at the first time, the using time of the wound paste is accurately judged, and the transparent air-permeable medical material layer (4, 4') is torn off after the wound is healed, so that the wound is prevented from being edematous, whitish and secondarily infected by bacteria after the wound is used for too long time.
In an embodiment, referring to fig. 1 and fig. 2, the substrate layers include a first substrate layer 1 and a second substrate layer 4, and the wound covering includes: the first base material layer 1 comprises a first surface and a second surface which are opposite, and the hemostatic material layer 3 is fixed on the first surface; the first adhesive layer 2 is arranged on the first surface of the first substrate layer 1 and used for fixing the wound covering 10 on a wound; the second substrate layer 4 is fixed on the second surface in a tearing-off mode and is a transparent breathable medical material layer, and the second substrate layer 4 comprises a third surface fixed on the second surface and a fourth surface opposite to the third surface; and the second adhesive layer 5 is arranged on the third surface or the fourth surface of the second substrate layer 4 and is used for fixing the second substrate layer 4 which is torn off from the wound cover 10 on a wound independently.
Referring to fig. 1, in the embodiment of the utility model, the first surface of the first substrate layer 1 is a downward surface, and the second surface is an upward surface of the first substrate layer 1. The first adhesive layer 2 is arranged on the downward surface of the first base material layer 1, and the first adhesive layer 2 is used for being stuck on skin, so that the wound plaster 10 is fixed at a wound, the hemostatic material layer 3 can cover the wound, and the hemostatic and debridement effects are achieved.
The hemostatic material layer 3 can be fixed on the first surface of the first substrate layer 1 through the first adhesive layer 2, so that the preparation of the wound covering 10 is simpler. Referring to fig. 3, the hemostatic material layer 3 may also be fixed on the first surface of the first substrate layer 1 by physical bonding, so as to increase the smoothness of the wound covering 10, and make the wound covering 10 more firmly adhered to the skin.
The first substrate layer 1, the first adhesive layer 2 and the hemostatic material layer 3 of the wound covering 10 according to the embodiment of the present invention are substantially the same as those of a common wound covering, and function in the first use stage of the wound covering 10 according to the present invention, and mainly function to stop bleeding and debride wound through the hemostatic material layer 3. The material of the first substrate layer 1 may be nonwoven fabric or PE.
Referring to fig. 1 and fig. 2, a second substrate layer 4 is fixed on the second surface of the first substrate layer 1, in the embodiment of the present invention, the third surface of the second substrate layer 4 is a downward surface, and the fourth surface of the second substrate layer 4 is an upward surface. Second substrate layer 4 is transparent medical material, and second substrate layer 4 can tear and take off, plays a role in the second use stage of adhesive bandage 10. The torn-off second substrate layer 4 is adhered to the skin again through the second adhesive layer 5 and fixed at the wound.
It should be noted that, referring to fig. 8, the sizes of the first substrate layer 1 and the first adhesive layer 2 may also be matched with the hemostatic material layer 3, so that the wound patch 10 is adhered to the wound on the skin through the second adhesive layer 5 disposed on the second substrate layer 4 in the first stage, which saves more materials and saves cost. The embodiment in which the size of the first substrate layer 1 and the first adhesive layer 2 is the same as that of the hemostatic material layer 3 is not limited to this embodiment, and the same can be achieved in other embodiments, and will not be described below.
As shown in fig. 1, the second adhesive layer 5 may be disposed on the third surface of the second substrate layer 4, so that the second substrate layer 4 may be fixed to the second surface of the first substrate layer 1 by the second adhesive layer 5, so that the overall thickness of the adhesive bandage 10 is small.
Although the adhesive bandage 10 of the embodiment shown in fig. 1 is thin, the second adhesive layer 5 peeled off from the first substrate layer 1 may have a problem of reduced adhesiveness, and the second substrate layer 4 may not be fixed to the skin well. The wound covering 10 of the embodiment shown in fig. 4 is modified to have the third adhesive layer 6 disposed on the second surface of the first substrate layer 1, and the first release paper layer 7 disposed between the second adhesive layer 5 and the third adhesive layer 6, so that after the second substrate layer 4 is peeled off, the adhesiveness of the second adhesive layer 5 is not affected.
Referring to fig. 2 and 3, in the embodiment of the present invention, the second adhesive layer 5 may also be disposed on an upward surface of the second substrate layer 4, and since the second adhesive layer 5 is exposed, the wound covering 10 may dispose the release paper layer 7 on an upper surface of the second adhesive layer 5 to ensure the adhesiveness of the second adhesive layer 5. The second substrate layer 4 may be fixed to the second surface of the first substrate layer 1 by physical bonding (fig. 2), and the second substrate layer 4 may be fixed to the first substrate layer 1 by a third adhesive layer 6 provided on the second surface of the first substrate layer 1 (fig. 3).
The wound plaster 10 comprises a first substrate layer 1 and a second substrate layer 4, the wound plaster 10 is not different from a common wound plaster in the first stage of using the wound plaster 10, the wound plaster is covered on the wound through a hemostatic material layer 3 to play a role in hemostasis and debridement, the wound achieves the purpose of hemostasis after about 20-30min, the hemostatic material layer 3 attached to the first substrate layer 1 is torn off, and only the second substrate layer 4 is kept to be adhered on the wound in the second stage, so that on one hand, the situation that the wound plaster 10 is short in use time and the young wound is stimulated and polluted can be prevented; on the other hand because second substrate layer 4 is transparent medical material, can let the user see the healing condition of wound, if medical treatment does not in place and arouse the infection, can discover and reprocess the very first time to accurate judgement woundplast's live time tears second substrate layer 4 promptly after the wound healing, prevents that the live time is too long wound edema, blushing, the secondary infection of bacterium.
Optionally, referring to fig. 1, the second adhesive layer 5 is disposed on a third surface of the second substrate layer 4, and the second substrate layer 4 is detachably fixed on the second surface through the second adhesive layer 5.
Through setting up second adhesive layer 5 on the third surface of second substrate layer 4 to second substrate layer 4 passes through second adhesive layer 5 to be fixed at the second surface of first substrate layer 1, makes adhesive bandage 10's whole thickness thinner, and the preparation method is simpler, and the cost is lower.
Further, referring to fig. 4, the wound covering 10 further includes: a third adhesive layer 6 provided on the second surface of the first base material layer 1; a first release paper layer 7, the first release paper layer 7 adhering to the second adhesive layer 5 and the third adhesive layer 6.
Although the adhesive bandage 10 of the embodiment shown in fig. 1 is thin, the second adhesive layer 5 peeled off from the first substrate layer 1 may have a problem of reduced adhesiveness, and the second substrate layer 4 may not be fixed to the skin well. The wound covering 10 of the embodiment shown in fig. 4 is modified such that the third adhesive layer 6 is provided on the second surface of the first substrate layer 1, and the release paper layer 7 is provided between the second adhesive layer 5 and the third adhesive layer 6, so that the adhesiveness of the second adhesive layer 5 is not affected after the second substrate layer 4 is peeled off.
Optionally, referring to fig. 1, the hemostatic material layer 3 is fixed on the first surface by the first adhesive layer 2. Because this adhesive bandage 10 must set up first adhesive layer 2 for fix adhesive bandage 10 on skin, consequently fix hemostatic material layer 3 directly through first adhesive layer 2 paste and fix the first surface at first substrate layer 1, can reduce the preparation process flow of adhesive bandage 10 for the preparation of adhesive bandage 10 is simpler, and manufacturing cost is lower.
Alternatively, the second substrate layer 4 comprises any one of polyurethane-based plastics, copolyether ester films, polyethylene terephthalate, polyethylene and polypropylene blends, and corresponding derivatives or modifications thereof.
Optionally, the hemostatic material layer 3 comprises a composite of medical spun cotton and a water absorbent material, and the composite is soaked with hemostatic and anti-inflammatory drugs.
Optionally, the first adhesive layer 2, the second adhesive layer 5 and the third adhesive layer 6 include any one of medical non-toxic water latex, medical pure natural maleic glue, medical acrylic coating, and medical non-toxic solvent glue.
In another embodiment, referring to fig. 5 and 6, the substrate layer is a transparent and breathable medical material layer 4', and the wound covering 10 further includes: an adhesive layer 5 ' disposed on one side of the transparent gas-permeable medical material layer 4 ' for securing the transparent gas-permeable medical material layer 4 ' to the wound; a second release paper layer 7 'disposed on the a adhesive layer 5'; a B adhesive layer 6 ' disposed on the second release paper layer 7 ', the hemostatic material layer 3 being disposed on the B adhesive layer 6 '.
The adhesive bandage 10 shown in fig. 5 is fixed on the wound through the B adhesive layer 6 ' in the first stage of use, after hemostasis is achieved, the second release paper layer 7 ' together with the hemostatic material layer 3 and the B adhesive layer 6 ' is torn off, and then the transparent air-permeable medical material layer 4 ' is fixed on the wound through the a adhesive layer 5 ' separately, and the second stage of healing is performed.
The second release paper layer 7 ' and the B adhesive layer 6 ' of the wound covering 10 shown in fig. 6 are the same as the hemostatic material layer 3 in size, the wound covering 10 is fixed on a wound through the A adhesive layer 5 ' in a first stage of use, after hemostasis is achieved, the second release paper layer 7 ' together with the hemostatic material layer 3 and the B adhesive layer 6 ' is torn off, and then the transparent air-permeable medical material layer 4 ' is independently fixed on the wound through the A adhesive layer 5 ' for healing in a second stage.
The base material layer structure of the adhesive bandage 10 of the embodiment is simpler, and the preparation process of the adhesive bandage 10 is simpler.
In a preferred embodiment, referring to fig. 7, the wound covering 10 further includes: and the uncovering devices 8 are oppositely arranged at two ends of the base material layer and are used for covering the base material layer, fixing the adhesive bandage 10 on one surface of the wound and covering the hemostatic material layer 3.
In the embodiment, the uncovering device 8 is attached to the B adhesive layer 6 ', so that the B adhesive layer 6' is protected and the viscosity is prevented from being lost; the lifting device 8 covers the hemostatic material layer 3 to protect the hemostatic material layer 3 from contamination. It will be appreciated that the lift device 8 may be provided on the wound covering 10 of any of the embodiments described above, and functions in the same or similar manner to the embodiments described herein. The lifting means 8 may be waxed paper, for example.
The present invention also provides a method for preparing a wound covering, please refer to fig. 1 to 4 and fig. 9, including:
s101: the first adhesive layer 2 is provided on the first surface of the first base material layer 1.
Referring to fig. 1, in the embodiment of the utility model, the first surface of the first substrate layer 1 is a downward surface, and the second surface is an upward surface of the first substrate layer 1. The first adhesive layer 2 is arranged on the downward surface of the first base material layer 1, and the first adhesive layer 2 is used for being stuck on skin, so that the wound plaster 10 is fixed at a wound, the hemostatic material layer 3 can cover the wound, and the hemostatic and debridement effects are achieved.
S102: a layer of haemostatic material 3 is secured to the first surface.
The hemostatic material layer 3 can be fixed on the first surface of the first substrate layer 1 through the first adhesive layer 2, so that the preparation of the wound covering 10 is simpler and the cost is lower. Referring to fig. 3, the hemostatic material layer 3 may also be fixed on the first surface of the first substrate layer 1 by a physical bonding manner, so as to increase the smoothness of the wound covering 10, and make the wound covering 10 more firmly adhered to the skin.
S103: the second substrate layer 4 can be torn off and fixed on the second surface opposite to the first surface, the second substrate layer 4 is made of transparent medical materials, and the second substrate layer 4 comprises a third surface fixed on the second surface and a fourth surface opposite to the third surface.
Referring to fig. 1 and fig. 2, a second substrate layer 4 is fixed on the second surface of the first substrate layer 1, in the embodiment of the present invention, the third surface of the second substrate layer 4 is a downward surface, and the fourth surface of the second substrate layer 4 is an upward surface. Second substrate layer 4 is transparent medical material, and second substrate layer 4 can tear and take off, and the second substrate layer 4 after tearing and taking off is fixed in wound department, plays a role in the second use phase of adhesive bandage 10 for the user can observe the healing condition of wound, prevents that the adhesive bandage from using too long, and the wound is whitish, becomes the swelling, causes secondary infection.
The second substrate layer 4 may be fixed to the second surface of the first substrate layer 1 by physical bonding (fig. 2), and the second substrate layer 4 may be fixed to the first substrate layer 1 by a third adhesive layer 6 provided on the second surface of the first substrate layer 1 (fig. 3).
S104: a second adhesive layer 5 is provided on the third surface or the fourth surface of the second base material layer 4.
The second substrate layer 4 peeled off from the adhesive bandage 10 is re-adhered to the skin by the second adhesive layer 5 and fixed at the wound.
As shown in fig. 1, the second adhesive layer 5 may be disposed on the third surface of the second substrate layer 4, so that the second substrate layer 4 may be fixed to the second surface of the first substrate layer 1 by the second adhesive layer 5, so that the overall thickness of the adhesive bandage 10 is small.
Referring to fig. 2 and 3, the second adhesive layer 5 may also be disposed on the fourth surface of the second substrate layer 4, and since the second adhesive layer 5 is exposed, the wound covering 10 may further include a release paper layer 7 on the upper surface of the second adhesive layer 5 to ensure the adhesion of the second adhesive layer 5.
Alternatively, referring to fig. 10, the preparation method includes:
s104': a second adhesive layer 5 is provided on the third surface of the second substrate layer 4.
Referring to fig. 1, the second adhesive layer 5 is disposed on the third surface of the second substrate layer 4, so that the second substrate layer 4 is fixed on the second surface of the first substrate layer 1 through the second adhesive layer 5, and the overall thickness of the adhesive bandage 10 is relatively small, the manufacturing method is relatively simple, and the cost is relatively low.
Further, the preparation method further comprises the following steps:
s105: a third pressure-sensitive adhesive layer 6 is provided on the second surface of the first base material layer 1, and a release paper layer 7 is bonded between the second pressure-sensitive adhesive layer 5 and the third pressure-sensitive adhesive layer 6.
Although the adhesive bandage 10 of the embodiment shown in fig. 1 is thin, the second adhesive layer 5 peeled off from the first substrate layer 1 may have a problem of reduced adhesiveness, and the second substrate layer 4 may not be fixed to the skin well. The wound covering 10 of the embodiment shown in fig. 4 is modified such that the third adhesive layer 6 is provided on the second surface of the first substrate layer 1, and the release paper layer 7 is provided between the second adhesive layer 5 and the third adhesive layer 6, so that the adhesiveness of the second adhesive layer 5 is not affected after the second substrate layer 4 is peeled off.
The wound dressing 10 of the embodiment of the present invention may be classified into a general type, a pox type, a finger type, and a heel type according to the position of use. The product specifications may be adapted to different wound sizes, for example 45mm × 42mm, 50mm × 50mm, 55mm × 37mm, 60mm × 20mm, 62mm × 42mm, 65mm × 20mm, 65mm × 25mm, 69mm × 44mm, 70mm × 18mm, 72mm × 25mm, 76mm × 19mm, Φ 8mm, Φ 10mm, Φ 12mm, Φ 14mm, etc.
After the adhesive bandage 10 provided by the embodiment of the utility model is prepared, the appearance is smooth and flat, no wrinkles and cracking phenomenon exists, the back surface is not penetrated with adhesive, no fiber falls off, and the product is free from foreign matters and peculiar smell. The viscosity of the product should be less than or equal to 2.5mm, and the peel strength of the product should be greater than or equal to 1.0N/cm. The product is adhered to a stainless steel plate at 37 ℃, and no residual viscous substances are left on the stainless steel plate after 30min of peeling.
In all examples shown and described herein, any particular value should be construed as exemplary only and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A wound covering, comprising:
a layer of haemostatic material for covering a wound;
the base material layer is used for arranging the hemostatic material layer and fixing the wound plaster on a wound;
wherein the substrate layer comprises a transparent breathable medical material layer, and the transparent breathable medical material layer and the hemostatic material layer can be torn off to fix the transparent breathable medical material layer on the wound independently.
2. The wound covering of claim 1, wherein the substrate layers include a first substrate layer and a second substrate layer, the wound covering comprising:
the first base material layer comprises a first surface and a second surface which are opposite, and the hemostatic material layer is fixed on the first surface;
the second substrate layer is fixed on the second surface in a tearing way and is a transparent breathable medical material layer, and the second substrate layer comprises a third surface fixed on the second surface and a fourth surface opposite to the third surface;
the adhesive bandage is fixed on a wound through the first base material layer or the second base material layer, and the second base material layer is torn off from the adhesive bandage and then is independently fixed on the wound.
3. The wound covering of claim 2, further comprising:
the first adhesive layer is arranged on the first surface of the first base material layer and used for fixing the wound covering on a wound;
and the second adhesive layer is arranged on the third surface or the fourth surface of the second substrate layer and is used for independently fixing the second substrate layer which is torn off from the wound cover on the wound.
4. A wound covering according to claim 3, characterised in that the second adhesive layer is provided on a third surface of the second substrate layer, the second substrate layer being releasably secured to the second surface by the second adhesive layer.
5. The wound covering of claim 4, further comprising:
the third adhesive layer is arranged on the second surface of the first base material layer;
a first release paper layer that conforms to the second adhesive layer and the third adhesive layer.
6. The wound covering of claim 3 in which the layer of haemostatic material is secured to the first surface by the first layer of adhesive.
7. The wound covering of claim 2 in which the wound covering is secured to the wound by the second substrate layer and the second substrate layer is detached from the wound covering and secured separately to the wound.
8. The wound covering of claim 1 in which the substrate layer is a transparent, air-permeable medical material layer, the wound covering further comprising:
the adhesive layer A is arranged on one side of the transparent breathable medical material layer and is used for fixing the transparent breathable medical material layer on a wound;
a second release paper layer disposed on the A adhesive layer;
a B adhesive layer disposed on the second release paper layer, the hemostatic material layer disposed on the B adhesive layer.
9. The wound covering of any one of claims 1 to 8, further comprising:
and the uncovering device is oppositely arranged at two ends of the base material layer and used for covering the base material layer and the wound cover is used for fixing one surface of a wound and covering the hemostatic material layer.
10. A wound covering according to any one of claims 1 to 9, characterised in that the layer of transparent, air-permeable medical material comprises any one of polyurethane-based plastics, copolyether ester film, polyethylene terephthalate, polyethylene and polypropylene blends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122760465.5U CN216724952U (en) | 2021-11-11 | 2021-11-11 | Adhesive bandage |
Applications Claiming Priority (1)
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