A WOUND DRESSING

Abstract

The present disclosure generally relates to a wound dressing for a wound, specifically adapted for reducing the risk of disturbance of the wound when removing the wound dressing. The present disclosure also relates to a wound treatment method.

Claims

1. A wound dressing, comprising: a substrate having an upper surface and a lower surface, a wound facing layer arranged at the lower surface of the substrate, a first release sheet releasibly covering and protecting a first portion the wound facing layer, and a second release sheet releasibly covering and protecting a second portion of the wound facing layer, wherein the second portion of the wound facing layer is non-overlapping with the first portion of the wound facing layer, wherein: an interface between the first and the second release sheet defines an overall interface direction, a printed or dyed instruction comprising a direction of removal of the wound dressing is visibly arranged at an upward facing side of the wound dressing, the upward facing side of the wound dressing arranged at the same side of the substrate as the upper surface of the substrate, and the direction of the removal of the wound dressing is essentially perpendicular to the overall interface direction and directed towards the second portion of the wound facing layer.

2. The wound dressing according to claim 1, wherein the wound facing layer comprises an adhesive.

3. The wound dressing according to claim 1, wherein the wound facing layer comprises a silicone gel.

4. The wound dressing according to claim 2, wherein the adhesive is hydrophobic and comprises a substance adapted to adhere to dry skin.

5. The wound dressing according to claim 1, wherein the first and the second release sheet each comprises a release tab provided at the interface between the first and the second release sheet.

6. The wound dressing according to claim 1, wherein the instruction is printed or dyed at the upper surface of the substrate.

7. The wound dressing according to claim 1, wherein the instruction is provided for removal of the wound dressing.

8. The wound dressing according to claim 1, wherein the substrate is hydrophobic.

9. The wound dressing according to claim 1, wherein the substrate comprises a reinforcing component.

10. The wound dressing according to claim 9, wherein the reinforcing component comprises a flexible and elastically-extendable textile material.

11. The wound dressing according to claim 10, wherein the textile material is a knitted textile.

12. The wound dressing according to claim 1, wherein the first portion the wound facing layer is smaller than the second portion the wound facing layer.

13. The wound dressing according to claim 12, wherein the first release sheet is provided with an instruction for removal prior to removing the second release sheet.

14. The wound dressing according to claim 1, wherein the substrate comprises a perforated plastic sheet.

15. The wound dressing according to claim 14, wherein the perforated plastic sheet is formed from polyurethane.

16. A wound treatment method, comprising: providing a wound dressing, the wound dressing comprising: a substrate having an upper surface and a lower surface, a wound facing layer arranged at the lower surface of the substrate, a first release sheet releasibly covering and protecting a first portion the wound facing layer, and a second release sheet releasibly covering and protecting a second portion of the wound facing layer, wherein the second portion of the wound facing layer is non-overlapping with the first portion of the wound facing layer, wherein: an interface between the first and the second release sheet defines an overall interface direction, a printed or dyed instruction comprising a direction of removal of the wound dressing is visibly arranged at an upward facing side of the wound dressing, the upward facing side of the wound dressing arranged at the same side of the substrate as the upper surface of the substrate, and the direction of the removal of the wound dressing is essentially perpendicular to the overall interface direction and directed towards the second portion of the wound facing layer, and applying the wound dressing to a wound of a patient.

17. The wound treatment method according to claim 16, wherein the wound is a tear wound.

18. The wound treatment method according to claim 16, wherein the tear wound comprises a skin attached portion and a non-attached portion, and the step of applying the wound dressing to the wound comprises: removing the first release sheet, thereby exposing the first portion of the wound facing layer, contacting, after removing the first release sheet, the first portion of the wound facing layer to the skin attached portion of the skin tear, removing, after contacting the first portion of the wound facing layer, the second release sheet, thereby exposing the second portion of the wound facing layer, and contacting, after removing the second release sheet, the second portion of the wound facing layer at least partly to an unwounded portion of the patient's skin in a vicinity of the non-attached portion of the tear wound.

19. A wound treatment method, comprising: providing a wound dressing according to claim 1, and applying the wound dressing to a tear wound of a patient.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The various aspects of the present disclosure, including its particular features and advantages, will be readily understood from the following detailed description and the accompanying drawings, in which:

[0028] FIG. 1 presents a detailed illustration of an exemplary wound dressing according to an embodiment of the present disclosure;

[0029] FIGS. 2A-2D shows an attachment and removal procedure of a wound dressing according to the present disclosure, and

[0030] FIG. 3 is a flow chart for applying the wound dressing to a patent in line with the present disclosure.

DETAILED DESCRIPTION

[0031] The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred embodiments of the present disclosure are shown. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and fully convey the scope of the present disclosure to the skilled person. Like reference characters refer to like elements throughout.

[0032] Turning now to the drawings and to FIG. 1 in particular, there is provided a wound dressing 100 according to an embodiment of the present disclosure. The wound dressing 100 comprises a substrate 102, the substrate 102 having an upper surface 104 and a lower surface 106. The substrate 102 is preferably perforated, for example formed from a reinforced mesh, a perforated polyurethane film, or a net structure (not explicitly illustrated in FIG. 1).

[0033] The wound dressing 100 is typically selected to have a size that correspond to the size of the wound. Accordingly, the size (area of the substrate 102) of the wound dressing 100 may be independently selected in line with the present disclosure. In addition, the wound dressing 100 must not necessarily be of a rectangular shape, but may also be differently formed, such as having a circular or elliptical shape.

[0034] The wound dressing 100 further comprises a wound facing layer 108 (not explicitly illustrated in FIG. 1) arranged at the lower surface 106 of the substrate 102, i.e. at the side of the wound dressing 100 that is intended to be placed towards a patient's skin. It is desirable that the wound facing layer 108 is somewhat tacky to ensure that the wound dressing 100 stays at the patient's skin without falling off, e.g. when the patient is moving. The wound facing layer 108 may for example comprise a silicone gel.

[0035] The strongly hydrophobic nature of the silicone gel prevents any wound fluid from penetrating out over e.g. healthy skin surrounding the wound and to loosen up skin tissue. The net-like structure of the wound dressing 100 allows for the surrounding, healthy area of the skin to which the dressing is affixed to be maintained airy and rich in oxygen.

[0036] The perforated structure of the substrate 102 allows for the passage of excess wound exudate through the wound dressing 100. For the treatment of wounds under regeneration of skin tissue, a dressing according to the present disclosure is preferably combined with an absorbent bandage applied over the wound dressing 100. In this manner excessive amounts of wound exudate will be sucked up at the same time as the absorbent bandage is kept spaced from the wound bed thereby preventing the bandage from sticking to the wound.

[0037] To ensure easy handling of the wound dressing 100 at application of the wound dressing 100 to the patient, it is desirable to ensure that the wound facing layer 108 at the lower surface 106 of the wound dressing 100 is covered with a non-tacky element. Specifically, as illustrated in FIG. 1 a first 110 and a second 112 release sheet is respectively arranged to cover and protect a first 114 and a second 116 portion of the wound facing layer 108. As discussed above, it may in some embodiment be desirable to include further release sheets, such as a third release sheet. Such adjustment may for example be desirable in case of in comparison large area wound dressings.

[0038] In the illustrated embodiment as shown in FIG. 1 the first portion 114 is arranged to have an essentially corresponding area as the second portion 116. It should however be understood that the areas may be different, such as for example an embodiment where the first portion 114 is in comparison smaller than the second portion 116.

[0039] As shown in FIG. 1, the first 110 and the second 112 release sheets are provided with release tabs 118, 120, respectively. In a preferred embodiment, as is shown in FIG. 1, it may be possible to allow the first release tab 118 to slightly “hide” the second release tab 120, thereby making removal of the first tab 118 before the second release tab 120 an intuitive action for the nurse or caregiver when applying the wound dressing to the patient.

[0040] As also shown in FIG. 1, the first portion 114 and the second portion 116 have one side facing each other, forming an interface 122 between the first and 114 and the second 116 portion. In the illustrated embodiment, the interface is essentially straight, meaning that the sides of the first 114 and the second 116 portion facing each other are equally straight. However, the interface 122 may be slightly “wavy” or “jagged”. In any case, an overall direction D1 of the interface 122 essentially “cuts through” the essentially rectangular wound dressing 100, seen as a normalized direction in case of the interface being wavy or jagged.

[0041] Correspondingly, the upper surface 104 of the wound dressing 100 is provided with a printed or dyed instruction 124 comprising a direction D2 of removal of the wound dressing 100. The printed or dyed instruction 124 is arranged to be visible at an upward facing side of the wound dressing 100, i.e. in the direction facing away from the patent skin when the wound dressing 100 has been applied thereto. The instruction 124 may be “integrated” with the substrate 102 or provided at the upper surface 104, such as e.g. by screen printing or any other present or future printing or dying method.

[0042] As is illustrated in FIG. 1 the direction of the removal D2 of the wound dressing 100 is essentially perpendicular to the overall interface direction D1 and additionally directed, starting from the first portion 114, towards the second portion 116 of the wound facing layer 108. That is, the intended direction of removal D2 of the wound dressing 100 is to start with the first portion 114 of the wound dressing 100 and then to continue with the second portion 116 of the wound dressing 100 until the wound dressing 100 has been completely removed, as will be further elaborated below.

[0043] Turning now to FIGS. 2A-2D in conjunction with FIG. 3, where it is illustrated an attachment and removal procedure of the wound dressing 100 to a patient 200. In FIG. 2A it is illustrated a lower part of a leg of the patient 200. As is shown, the patient has a so-called tear wound 202 (also referred to as a skin tear). A tear wound may for example be caused by shear, friction, and/or blunt force resulting in separation of skin layers, and may be partial-thickness (separation of the epidermis from the dermis) or full-thickness (separation of both the epidermis and dermis from underlying structures).

[0044] Generally, tear wounds are traumatic wounds, which have a high probability of becoming complex chronic wounds, if not properly managed. As is known by the skilled person, the tear wound comprises a “skin attached portion” and a “non-attached portion” (e.g. comprising a so called skin flap), where the non-attached portion is the “loose” portion of the tear wound that is desirable to be “reattached”. It is, as understood from the above, desirable to always remove the wound dressing 100 with the skin flap, and not against it, to maintain flap viability, i.e. starting from the skin attached portion.

[0045] To protect the tear wound 202 and reduce the risk of future complications it is desirable to quickly attach a wound dressing, such as wound dressing 100, typically following a wound cleansing process and an approximation of wound edges. Accordingly, in line with the present disclosure the wound dressing 100 is provided, where the wound dressing 100 is formed in line with the discussion as provided above.

[0046] As shown in FIG. 2A, the nurse or caregiver has optionally performed the wound cleansing process and the approximation of wound edges, and is attaching the wound dressing 100 to the tear wound 202 of the patient 200 by first removing the first release sheet 110 (typically starting at the interface 122 using the release tab 118), thereby exposing the first portion 114 of the wound facing layer 108. As then shown in FIG. 2B, the tacky surface of the first portion 114 of the wound facing layer 108 is then contacted, S2, with the to a skin attached portion of the skin tear 202.

[0047] Once the first portion 114 has been correctly contacted to the patient's skin, the nurse or caregiver will remove, S3, the second release sheet 112, thereby exposing the second portion 116 of the wound facing layer 108 and consequently contact, S4, the second portion 116 of the wound facing layer 108 at least partly to an unwounded portion of the patient's skin in a vicinity of the non-attached portion of the tear wound 202.

[0048] Once the wound dressing 100 has been correctly attached to the patient 200 in relation to the “direction” of the tear wound 202, i.e. in relation to the attached and the non-attached portion of the tear wound 202, also the intended direction of removal D2 of the wound dressing 100 will be correct.

[0049] That is, by arranging the release sheets 110, 112 in the manner as defined by the present disclosure it is possible to also reduce the risks that the wound dressing 100 erroneously removed, which would be the case if the nurse or caregiver wound start by removing the second portion 116 of the wound dressing 100. However, in line with the present disclosure the nurse or caregiver will automatically be provided with a correct instruction regarding the direction for removal D2 of the wound dressing 100, ensuring that the nurse or caregiver will start with the first portion 114 of the wound dressing 100.

[0050] As shown in FIG. 2C, the instruction of direction for removal D2 of the wound dressing 100 is visibly shown to the nurse or caregiver, meaning that the removal instruction of arranged to face upwards regarding the wound dressing 100, the upward facing side of the wound dressing arranged at the same side of the substrate 102 as the upper surface 104 of the substrate 102.

[0051] In FIG. 2D the wound dressing 100 has been completely removed, illustrating how the tear wound 202 has been at least partly healed.

[0052] It should be understood that the wound dressing according to the present disclosure may be used for human or animal use.

[0053] Although the figures may show a sequence the order of the steps may differ from what is depicted. Also, two or more steps may be performed concurrently or with partial concurrence. Such variation will depend on the systems chosen and on designer choice. All such variations are within the scope of the disclosure.

[0054] Additionally, even though the present disclosure has been described with reference to specific exemplifying embodiments thereof, many different alterations, modifications and the like will become apparent for those skilled in the art.

[0055] In addition, variations to the disclosed embodiments can be understood and effected by the skilled addressee in practicing the present disclosure, from a study of the drawings, the disclosure, and the appended claims.

[0056] Furthermore, in the claims, the word “comprising” does not exclude other elements or steps, and the indefinite article “a” or “an” does not exclude a plurality.

[0057] Furthermore, in the foregoing description, various embodiments have been presented for the purpose of illustration and description. They are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Obvious modifications or variations are possible in light of the above teachings.

[0058] The embodiments were chosen and described to provide the best illustration of the principals of the present disclosure and its practical application, and to enable one of ordinary skill in the art to utilize the various embodiments with various modifications as are suited to the particular use contemplated.

[0059] All such modifications and variations are within the scope of the present disclosure as determined by the appended claims when interpreted in accordance with the breadth they are fairly, legally, and equitably entitled.