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EP-4736823-A1 - WOUND DEBRIDEMENT PAD

EP4736823A1EP 4736823 A1EP4736823 A1EP 4736823A1EP-4736823-A1

Abstract

The present invention relates to the debridement of wounds. Specifically, a wound debridement pad is described that comprises one or more woven layers, wherein each woven layer comprises yarns interwoven such that they form periodic clusters of loops, along with cavities between adjacent clusters of loops. The clusters of loops are suitable for removing dead, damaged, or infected tissue from a wound, and the cavities are suitable for collecting the dead, damaged, or infected tissue. A method of using the debridement pad in debriding a wound is also described.

Inventors

  • BUGEDO ALBIZURI, Ander
  • FERNANDEZ, ROBERT

Assignees

  • Advanced Medical Solutions Limited

Dates

Publication Date
20260506
Application Date
20251030

Claims (15)

  1. A wound debridement pad comprising: one or more woven layers, wherein each woven layer comprises: first yarns extending in a first direction; second yarns extending in a second direction, wherein the first direction is perpendicular to the second direction; and third yarns extending in the first direction, wherein the first yarns and the third yarns are each interwoven with the second yarns such that the third yarns form periodic clusters of loops above and below the first and second yarns, the clusters of loops for removing dead, damaged, or infected tissue from a wound, and wherein cavities exist between adjacent clusters of loops due to an absence of the third yarns, the cavities for collecting the dead, damaged, or infected tissue.
  2. The wound debridement pad of claim 1 wherein the first, second and/or third yarns are monofilament yarns, multifilament yarns, or spun yarns.
  3. The wound debridement pad of claims 1 or 2 wherein the first, second and/or third yarns comprise polyester, optionally wherein the third yarns comprise polyester and polyamide, preferably 70-90% by weight polyester and 10-30% by weight polyamide.
  4. The wound debridement pad of any preceding claim, wherein the third yarns, and optionally the first and/or second yarns, comprise, preferably consist of, microfibres, such as split microfibres.
  5. The wound debridement pad of any preceding claim, wherein the periodic clusters of loops each comprise from 2 to 10 loops, preferably from 3 to 8 loops, further preferably from 3 to 6 loops.
  6. The wound debridement pad of any preceding claim, wherein the area number density of the clusters of loops is from 250 clusters of loops per 100cm 2 to 500 clusters of loops per 100cm 2 .
  7. The wound debridement pad of any preceding claim, wherein the loops within the periodic clusters of loops are configured to splay apart from each other under pressure to create gaps for the collection of the dead, damaged, or infected tissue.
  8. The wound debridement pad of any preceding claim, wherein the periodic clusters of loops each have a length measured along the first direction of from 0.1 to 0.5 cm; and/or wherein the periodic clusters of loops each have a length measured along the second direction of from 0.3 to 0.8 cm.
  9. The wound debridement pad of any preceding claim, wherein loops within the periodic clusters of loops extend above the first and second fibres by a distance of from 1 to 5 mm; and/or wherein loops within the periodic clusters of loops extend below the first and second fibres by a distance of from 1 to 5 mm.
  10. The wound debridement pad of any preceding claim, wherein the third yarns have a linear mass density of from 100 to 600 denier, preferably of from 100 to 300 denier.
  11. The wound debridement pad of any preceding claim, wherein each woven layer has a basis weight of from 200 to 400 gsm; and/or wherein the pad has total thickness of from 4 to 12 mm.
  12. The wound debridement pad of any preceding claim, wherein the pad comprises two or more of said woven layers, and wherein the woven layers are attached together, preferably sewn together.
  13. The wound debridement pad of any preceding claim further comprising a pocket for inserting the hand of a user, preferably wherein the pad is the pad of claim 12 and the pocket is formed between two of said woven layers; and/or further comprising an applicator connected to at least one woven layer.
  14. The wound debridement pad of any preceding claim where the pad is configured such that it is reversible, thereby providing more than one configuration for debridement of the wound.
  15. A packaged article comprising the debridement pad of any one of claims 1 to 14 enclosed in packaging, preferably plastic packaging.

Description

FIELD OF INVENTION The present invention relates to the mechanical debridement of wounds. In particular, a new woven debridement pad is described herein. A method of using the debridement pad is also disclosed. BACKGROUND The mechanical debridement of wounds is an important medical procedure that involves the physical removal of dead, damaged, infected or otherwise non-viable tissue from a wound. It is commonly used in clinical settings but can also be performed at home under medical guidance. The debridement of a wound has a number of benefits. These include: Promoting healing of the wound. Debridement can remove non-viable tissue and create a clean environment that facilitates the growth of healthy tissue. The dead tissue may otherwise acts as a barrier, slowing down the natural healing process.Preventing infection of the patient. Dead or necrotic tissue can harbor bacteria, which increases the risk of infection. By debriding the wound, this source of infection is eliminated, reducing the likelihood of further complications such as cellulitis, abscess formation, or sepsis.Reducing inflammation. Non-viable tissue can cause prolonged inflammation in the wound area. Removing the non-viable tissue helps reduce chronic inflammation, which can otherwise impede the body's healing response and lead to chronic wounds.Improving wound assessment. By clearing away dead tissue, clinicians can better evaluate the wound's true depth and extent. This allows for more accurate diagnoses and effective treatment planning.Decreasing risk of amputation. In serious wounds, especially those with poor circulation (such as diabetic ulcers), infection and poor healing can increase the risk of amputation. Proper debridement helps control infection and enhance healing, lowering the risk of more drastic interventions like amputation.Enhancing the effectiveness of subsequent treatments. Providing a clean wound bed makes treatments, like dressings and topical medications, more effective. For instance, antibiotics or antiseptic agents can better penetrate a wound free of necrotic tissue, maximizing their efficacy.Promoting the growth of new tissue. Debridement encourages the formation of granulation tissue, which is essential for wound closure. This is a critical part of the healing process, as new, healthy tissue replaces what was removed.Preventing malodor and discomfort. Necrotic tissue can emit foul odors and cause discomfort for the patient. Debridement can improve patient quality of life by reducing these symptoms.Stimulating wound healing. The physical action of mechanical debridement can also stimulate the wound healing process. For example, wet-to-dry dressings, when removed, may lightly abrade the wound, promoting blood flow and encouraging the development of new tissue (granulation).Removing biofilm. In some cases, biofilms (thin layers of bacteria that adhere to the wound surface) can form on chronic wounds and impair healing. Mechanical debridement is one method of physically disrupting and removing biofilms, improving the wound's response to other treatments, such as antibiotics. A further advantage of mechanical debridement is that it is relatively inexpensive compared to other types of debridement, such as enzymatic or surgical methods. It often uses basic supplies like gauze and saline, making it a practical option, especially in resource-limited settings. Mechanical debridement also offers a non-surgical alternative for patients who are not suitable candidates for surgical debridement due to health conditions or contraindications. It is a less invasive option that can still be effective in promoting healing. Mechanical debridement can be combined with other debridement techniques, such as enzymatic or autolytic debridement, to enhance overall effectiveness. For example, mechanical debridement may be used to initially clear away surface debris, while other methods are employed for deeper, more precise tissue removal. The most common techniques used for mechanical debridement include: Wet-to-Dry Dressings. A saline-soaked gauze is applied to the wound and allowed to dry. When removed, it pulls off dead tissue along with the dressing.Irrigation. Pressurized fluids (e.g., saline solution) are used to flush the wound, removing debris and dead tissue.Scrubbing/Brushing. Gentle scrubbing with a sterile brush or gauze pad to remove necrotic tissue and debris. The above-mentioned techniques typically suffer from several drawbacks including pain and discomfort to the patient and non-selective removal of tissue (i.e. the debridement removes both necrotic and viable tissue). The techniques can also damage healthy tissue if not done carefully. However, despite these considerations, mechanical debridement remains a valuable and widely used option for wound care, particularly when more advanced or surgical interventions are not necessary or feasible. Recently there has been the development of a number of tailored debridement pads as a