WO2009004282A2 - Pansement médical - Google Patents

Pansement médical Download PDF

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Publication number
WO2009004282A2
WO2009004282A2 PCT/GB2008/002011 GB2008002011W WO2009004282A2 WO 2009004282 A2 WO2009004282 A2 WO 2009004282A2 GB 2008002011 W GB2008002011 W GB 2008002011W WO 2009004282 A2 WO2009004282 A2 WO 2009004282A2
Authority
WO
WIPO (PCT)
Prior art keywords
film
dressing
medical dressing
skin
backing
Prior art date
Application number
PCT/GB2008/002011
Other languages
English (en)
Other versions
WO2009004282A3 (fr
Inventor
Stephen Thomas
Original Assignee
Stephen Thomas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stephen Thomas filed Critical Stephen Thomas
Publication of WO2009004282A2 publication Critical patent/WO2009004282A2/fr
Publication of WO2009004282A3 publication Critical patent/WO2009004282A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0273—Adhesive bandages for winding around limb, trunk or head, e.g. cohesive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/00051—Accessories for dressings
    • A61F13/00063—Accessories for dressings comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/06—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings
    • A61F13/064—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings for feet
    • A61F13/069—Decubitus ulcer bandages
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00157—Wound bandages for burns or skin transplants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00157—Wound bandages for burns or skin transplants
    • A61F2013/00161—Wound bandages for burns or skin transplants with wax, e.g. petroleum or bees
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00217—Wound bandages not adhering to the wound
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00217—Wound bandages not adhering to the wound
    • A61F2013/00229—Wound bandages not adhering to the wound with alginate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00246—Wound bandages in a special way pervious to air or vapours
    • A61F2013/00259—Wound bandages in a special way pervious to air or vapours thin film
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00246—Wound bandages in a special way pervious to air or vapours
    • A61F2013/00263—Wound bandages in a special way pervious to air or vapours vapour permeability >500 g/m2/24h
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00314—Wound bandages with surface treatments
    • A61F2013/00331—Wound bandages with surface treatments lubricants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00387—Plasters use skin protection
    • A61F2013/00395—Plasters use skin protection from skin abrasion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00519—Plasters use for treating burn
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/0054—Plasters use for deep wounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00544—Plasters form or structure
    • A61F2013/00604—Multilayer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00855—Plasters pervious to air or vapours
    • A61F2013/00868—Plasters pervious to air or vapours thin film
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00902—Plasters containing means
    • A61F2013/0091—Plasters containing means with disinfecting or anaesthetics means, e.g. anti-mycrobic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00902—Plasters containing means
    • A61F2013/00927—Plasters containing means with biological activity, e.g. enzymes for debriding wounds or others, collagen or growth factors

Definitions

  • the invention relates to a medical dressing, particularly, but not exclusively for the clinical management of fragile or easily damaged areas of the epidermis or dermal tissue resulting from conditions such as trauma, burns, epidermolysis bullosa, or cancer.
  • the dressing will find application also in both the emergency and long term management of serious or extensive burns, and that it will be of value in the management of battlefield injuries. It will also be of value in the treatment of exuding wounds such as ulcers, for example, caused by diabetes, arterial or venous insufficiency.
  • EB Epidermolysis bullosa
  • EBS EB Simplex
  • JEB Junctional EB
  • Dystrophic EB occurs under the basement membrane. An estimated 50 in 1 million live births are diagnosed with EB. Of these cases, approximately 92% are EBS, 5% are DEB, 1% are JEB, and 2% are unclassified. The disorder occurs in every racial and ethnic group throughout the world and affects both genders.
  • any action that creates friction between the skin layers will create blisters and painful sores, sometimes compared to third-degree burns which can involve very large areas of the body and take extended times to heal.
  • Other people who have friable or easily damaged skin not associated with EB include the elderly or individuals who are receiving topical or systemic corticosteroids for a pre-existing skin or medical condition and patients with serious burns particularly during transportation to hospital or specialist treatment centres.
  • low-adherent dressings include plain gauze impregnated in white soft paraffin or some similar ointment basis, or fabric coated with silicone in various forms to provide a non adherent interface layer between the skin or wound and some form of secondary dressing.
  • these dressings are presented in individual pieces commonly measuring 10 cm x 10cm or multiples thereof which must be applied singly forming a patchwork of dressings over the affected area.
  • These dressings in turn must be held in place with a secondary retention system such as a lightweight bandage or surgical stockinette. Surgical tape cannot be used as this will cause trauma to the surrounding skin upon removal and lead to the formation of fresh blisters in EB suffers.
  • plastic food wrap is used to provide a low adherent conformable covering but this brings problems of its own, as such materials are of very limited permeability to moisture vapour and permit the accumulation of sweat and skin secretions under the film. The accumulation of fluid in this way causes maceration and increases the possibility of infection. Plastic film food wrap is also very difficult to handle and apply as it tends to collapse upon itself once removed from the roll.
  • Embodiments of the invention address the problems mentioned above by providing a medical dressing suitable for the prevention and management of skin damage in patients who are at particular risk of injuries cause by EB as well as more general management and prevention of damaged or vulnerable skin, wounds etc and underlying tissue.
  • One feature of these embodiments is the provision of a moisture vapour permeable film, a so called semipermeable film, in use, arranged to be in direct but non adherent contact with the skin.
  • Semipermeable films are also used to form the backing layer of absorbent dressings.
  • the function of the absorbent layer is to absorb exudate from wounds such as leg ulcers and pressure sores.
  • the inner layer of the dressing is made from a sheet of foam typically 2-5 mm thick.
  • the film can be used as a carrier for an absorbent adhesive mass containing carboxymethylcellulose (CMC), starch or other types of gel-forming agents resulting in products commonly described as hydrogel sheets or hydrocolloid dressings. in all of these composite products the film is not placed in direct contact with the skin but is used to form a liquid and/or bacterial barrier on the outer surface of the dressing.
  • CMC carboxymethylcellulose
  • starch or other types of gel-forming agents resulting in products commonly described as hydrogel sheets or hydrocolloid dressings.
  • the film is not placed in direct contact with the skin but is used to form a liquid and/or bacterial barrier on the outer surface of the dressing.
  • skin dressing comprising a semipermeable film arranged to be in direct contact with the skin and a backing layer, the backing layer supporting the film in use in said contact.
  • the dressing is in the form of a roll. In another embodiment the dressing is in the form of discrete lengths.
  • a suitable film can be made from a suitable material such as: polyurethane; polyvinylchloride; polyvinylidene chloride; polyvinyl alcohol; polysulfone; polystyrene; polypropylene; polyethylene; polyamide; ethylene- vinylacetate copolymer; polyester; polycarbonate; ionomer; polyvinylfluoride and
  • FEP fluoropolymer or combinations thereof The preferred moisture vapour permeable film is polyurethane. Since the film is continuous, it will have no perforations or pores which extend through the thickness of the film.
  • the film may be semipermeable such that it is permeable to varying degrees of vapour, such as water vapour, but substantially impermeable to liquids, such as water, and microorganisms such as bacteria.
  • vapour such as water vapour
  • liquids such as water, and microorganisms such as bacteria.
  • the film thus forms an effective barrier to contamination whilst allowing the wound and surrounding skin to dissipate sweat or wound fluid as moisture vapour.
  • the film may include the ability to change its permeability according to the state of its hydration.
  • the permeability decreases as hydration decreases
  • there is a practical advantage to the management of exuding wounds because the permeability of the film will reduce as the wound heals and exudate production diminishes, maintaining a moist but not macerated environment which has been shown to facilitate rapid wound healing.
  • polyurethane film is used, this offers many practical advantages in the treatment or prevention of traumatic injuries to easily damaged skin.
  • the film is highly conformable, has a low coefficient of friction and can be produced in various thickness and permeabilities, in an almost unlimited range of sizes.
  • the backing layer may be in the form of a lightweight secondary layer bonded to the outer surface of the film.
  • this layer is a layer of gauze, a thin web of nonwoven fabric, a thin layer of foam, with or without apertures to facilitate passage of moisture vapour, or a piece of woven or knitted textile fabric forming. an open mesh.
  • the backing fabric is impregnated with a lubricant to further reduce friction between the outer surface of the completed dressing and clothing or bed linen.
  • backing layer is elasticated and is bonded to the film whilst the backing layer is under slight extension. This has the effect of creating a dressing having a wrinkled film when the backing layer is released from tension. The dressing can then be stretched in use up to an extension where the film is no longer wrinkled.
  • the dressing resembles a lightweight retention bandage that will conform closely to the contours of the body without adhering to it. This intimate contact is important. If the dressing is not held in contact with the skin, fluid may accumulate beneath it which may lead to maceration.
  • the invention could be used as a dressing for exuding wounds such as arterial or diabetic ulcers on the lower limb.
  • the dressing is in the form of a bandage for applying compression in the treatment of leg ulcers caused by venous insufficiency.
  • the film is applied in its stretched state under the degree of tension consistent with its clinical application.
  • the dressing in the form of said bandage is stretched to the point at which all the wrinkles or slack within the film are removed and then it is applied, for example to a limb.
  • the film would not only act as an effective primary dressing layer, but it would also limit the extension of the backing layer and ensure that the bandage was applied with the appropriate tension.
  • the resultant dressing would be many times thinner than conventional ulcer dressings systems with obvious practical advantages to the patient who would have less difficulty fitting apparel such as socks, stockings or shoes over the dressing.
  • the film could be coated or otherwise medicated with antimicrobial agents such as silver, iodine or complexes thereof or any other suitable bioactive molecule designed to facilitate or promote any stage in the healing process.
  • the film could be coated with lubricant to reduce frictional forces between it and the skin.
  • the dressing can be applied spirally in a continuous length using a conventional bandaging technique to dress digits, limbs or the torso.
  • the dressing being lightweight, is relatively comfortable and conformable and will not greatly impede movement.
  • the backing layer also serves a second important function in that it forms a spacer between overlapping layers of the film, thus allowing vapour to escape and maintaining the desired vapour transmission rate even though the dressing overlaps. If a roll of film without such a backing layer were to be applied in the form of a spiral with a 50% overlap like a conventional bandage, successive layers would come into intimate contact with each other thus effectively doubling the thickness of the dressing and approximately halving the moisture vapour permeability of the combination.
  • Figure 1 shows a first embodiment of the invention in the form of a roll of bandage-like dressing
  • Figure 2 shows an enlarged view if a section along the line M-Il of the dressing shown in Figure 1 ;
  • Figure 3 shows the dressing of Figures 1 and 2 in use.
  • the term skin refers the epidermis or dermal tissue area of a person or animal, including the outer exposed surface of tissue, for example a wound, where skin should be.
  • the dressing comprises a stretchable fabric outer layer 14 and an inner layer 16 of hydrophilic polyurethane plastics film.
  • the fabric outer layer comprises a stretchable bandage of knitted fabric having a generally open weave of viscose fibres together with elastically extensible material, in this case elastane.
  • the elastane extends generally in the longitudinal direction X so that the dressing is stretchable in that direction.
  • the polyurethane film 16 is extruded and is generally not stretchable.
  • the film 16 is approximately 100 ⁇ m in thickness and has a permeability to water vapour of about 1g/cm 2 /24 hours at body temperature.
  • the film 16 is bonded to the outer layer 14 by means of a suitable adhesive, such as a surgical acrylate or by other bonding means such as heat when the outer layer is in a stretched condition.
  • a suitable adhesive such as a surgical acrylate or by other bonding means such as heat when the outer layer is in a stretched condition.
  • the tension in the outer layer is released. This release causes the outer layer 14 and the film 16 to contract, so the film becomes wrinkled or puckered as shown in Figure 2.
  • the dressing is stored in that condition and when used can be stretched.
  • the dressing can be stretched by an amount governed by the film. When the film becomes taught, further extension of the dressing is inhibited. This feature prevents the dressing being applied with too much inherent tension.
  • FIG. 3 shows the dressing 10 applied to the dermal tissue 30 of a patient.
  • the dressing is stretched so that the film 16 is smoothly in direct contact with the tissue 30, allowing vapour 32 to escape in a controlled manner, keeping the tissue 30 at a suitable level of hydration.
  • the dressing is intended to be spirally wound.
  • the outer layer allows vapour to escape between overlapping layers of the dressing 10 and so maintaining the permeability of a single thickness of film.
  • the inner layer 16 of the dressing is intended to contact directly the skin, although it is possible that an intervening layer, possibly only at the edges of the dressing, may be applied to the film 16 so that the film only contacts the skin in predefined areas, for example over an ulcer.
  • the device is intended primarily for direct application to the skin, it could be usefully employed as a secondary dressing to be used in conjunction with a gel forming primary dressing made from alginate or CMC.
  • Polyurethane film is described but any semipermeable continuous film could be employed.
  • Such films may include therapeutic additives, such as medicines, biocides, antibiotics or other additives for assisting in healing or to increase the preventive ability of the dressing. It is possible to provide dressings having a range of permeabilities, but dressings having films which vary their permeability as mentioned above. A film permeability in the range of 0.5 to 5 g/cm 2 /24hours and a film thickness of 50 to 500 ⁇ m is preferred.
  • the outer layer 14 is described above as a stretchable viscose fabric.
  • Other permeable layers may be used as an alternative or in addition to the layer
  • Alternatives or addition layers include woven fabrics such as a cotton weave, non woven fabrics such as a polyester felt, sheet materials such as perforated plastics or metals which could deform plastically, synthetic foams, or a combination of such materials.
  • Elastic properties in the outer layer 14 are preferred but are not essential. If elastic properties are employed, these may be imparted by the use of yarns made from rubber, elastane or any other suitable material.
  • the dressing can be produced in any suitable size or shape, including cupped shapes formed to at least partially surround vulnerable areas of the body, such as elbows, buttocks or heels.
  • the dressings described above have the property that they are non adherent and readily removable from the skin or a wound, even if the wound is active. In other words they can be pulled away from the area where they have made contact, without significant trauma , or without significantly disturbing freshly healed, fragile, friable or delicate skin or wound tissues.
  • the adhesive holding the film to the backing fabric may be applied in a continuous layer or in a discontinuous manner in the form of tramlines or spots or patches which would have the effect of increasing the total permeability of the device as certain adhesives can restrict the passage of moisture vapour through the film.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Materials For Medical Uses (AREA)

Abstract

L'invention concerne un pansement médical (10) pour la prévention ou le traitement des plaies cutanées et des ulcères, en particulier, chez les patients qui y sont prédisposés en raison de troubles médicaux ou génétiques tels que l'épidermolyse bulleuse, le cancer de la peau ou une peau fragile résultant de l'utilisation de corticostéroïdes. Le pansement est constitué d'un film non adhésif (16) stabilisé par un support (14). En utilisation, le film (16) peut être en contact direct avec la zone affectée chez le patient, le support maintenant le film en place.
PCT/GB2008/002011 2007-07-01 2008-06-12 Pansement médical WO2009004282A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0712714A GB0712714D0 (en) 2007-07-01 2007-07-01 A new dressing for the management of epidermolysis bullosa and other conditions involving fragile, easily damaged skin
GB0712714.5 2007-07-01

Publications (2)

Publication Number Publication Date
WO2009004282A2 true WO2009004282A2 (fr) 2009-01-08
WO2009004282A3 WO2009004282A3 (fr) 2009-12-23

Family

ID=38420996

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/002011 WO2009004282A2 (fr) 2007-07-01 2008-06-12 Pansement médical

Country Status (2)

Country Link
GB (1) GB0712714D0 (fr)
WO (1) WO2009004282A2 (fr)

Cited By (3)

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EP2415929A1 (fr) * 2010-08-03 2012-02-08 Zodiac Automotive Division Matériau composite hautement déformable pour dispositifs médicaux
WO2014011636A1 (fr) 2012-07-10 2014-01-16 Bio Med Sciences, Inc. Nouvelle contre-mesure médicale destinée à des premiers intervenants, en cas de brûlures thermiques et/ou radiologiques affectant un très grand nombre de blûlés
WO2021032361A1 (fr) * 2019-08-19 2021-02-25 Sigvaris Ag Vêtement de compression médical doté d'une section d'articulation spéciale pour une plage de mouvement accrue

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US5445604A (en) * 1980-05-22 1995-08-29 Smith & Nephew Associated Companies, Ltd. Wound dressing with conformable elastomeric wound contact layer
WO2005065604A1 (fr) * 2004-01-07 2005-07-21 Biopol Co., Ltd. Pansement

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US3618754A (en) * 1969-02-11 1971-11-09 Kendall & Co Conformable elastic adhesive tape
US5445604A (en) * 1980-05-22 1995-08-29 Smith & Nephew Associated Companies, Ltd. Wound dressing with conformable elastomeric wound contact layer
US5188124A (en) * 1989-07-19 1993-02-23 Johnson & Johnson Consumer Products, Inc. Low friction film dressing
WO2005065604A1 (fr) * 2004-01-07 2005-07-21 Biopol Co., Ltd. Pansement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2415929A1 (fr) * 2010-08-03 2012-02-08 Zodiac Automotive Division Matériau composite hautement déformable pour dispositifs médicaux
FR2963626A1 (fr) * 2010-08-03 2012-02-10 Zodiac Automotive Division Materiau composite hautement deformable pour dispositifs medicaux
WO2014011636A1 (fr) 2012-07-10 2014-01-16 Bio Med Sciences, Inc. Nouvelle contre-mesure médicale destinée à des premiers intervenants, en cas de brûlures thermiques et/ou radiologiques affectant un très grand nombre de blûlés
EP2872074A4 (fr) * 2012-07-10 2016-04-20 Bio Medical Sciences Inc Nouvelle contre-mesure médicale destinée à des premiers intervenants, en cas de brûlures thermiques et/ou radiologiques affectant un très grand nombre de blûlés
WO2021032361A1 (fr) * 2019-08-19 2021-02-25 Sigvaris Ag Vêtement de compression médical doté d'une section d'articulation spéciale pour une plage de mouvement accrue
US20220265480A1 (en) * 2019-08-19 2022-08-25 Sigvaris Ag Medical compression garment with a special joint section for increased range of motion

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WO2009004282A3 (fr) 2009-12-23

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