WO2015173546A1 - Pansement pour drain chirurgical - Google Patents

Pansement pour drain chirurgical Download PDF

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Publication number
WO2015173546A1
WO2015173546A1 PCT/GB2015/051364 GB2015051364W WO2015173546A1 WO 2015173546 A1 WO2015173546 A1 WO 2015173546A1 GB 2015051364 W GB2015051364 W GB 2015051364W WO 2015173546 A1 WO2015173546 A1 WO 2015173546A1
Authority
WO
WIPO (PCT)
Prior art keywords
dressing
absorbent body
drain
base
compartment
Prior art date
Application number
PCT/GB2015/051364
Other languages
English (en)
Inventor
Stephen Cotton
Robert Cameron MURRAY
Original Assignee
Brightwake Limited
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 Brightwake Limited filed Critical Brightwake Limited
Publication of WO2015173546A1 publication Critical patent/WO2015173546A1/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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • 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
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • 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
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/0206—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
    • 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
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/0206—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
    • A61F13/0209—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings comprising superabsorbent material
    • 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
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/022—Adhesive bandages or dressings with fluid retention members having more than one layer with different fluid retention characteristics
    • 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
    • A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
    • A—HUMAN NECESSITIES
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    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0465—Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters
    • A61M16/047—Masks, filters, surgical pads, devices for absorbing secretions, specially adapted therefor
    • 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
    • A61F2013/00251—Wound bandages in a special way pervious to air or vapours with macroscopic openings
    • 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
    • A61F2013/00412—Plasters use for use with needles, tubes or catheters
    • 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
    • A61F2013/00536—Plasters use for draining or irrigating 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
    • A61F2013/00544—Plasters form or structure
    • A61F2013/00621—Plasters form or structure cast
    • A61F2013/00634—Plasters form or structure cast foam
    • 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
    • A61F2013/00727—Plasters means for wound humidity control
    • A61F2013/00731—Plasters means for wound humidity control with absorbing pads
    • 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
    • A61F2013/00727—Plasters means for wound humidity control
    • A61F2013/00731—Plasters means for wound humidity control with absorbing pads
    • A61F2013/0074—Plasters means for wound humidity control with absorbing pads containing foams
    • 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
    • A61F2013/00727—Plasters means for wound humidity control
    • A61F2013/00748—Plasters means for wound humidity control with hydrocolloids or superabsorbers
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F2013/4506—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape special configurations using catheter or tube
    • 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
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials

Definitions

  • This invention relates to a dressing for a surgical drain, for instance a chest drain, and in particular to such a dressing that is capable of absorbing exudate from the drain site.
  • a surgical drain is a tube used by surgeons to remove pus, blood or other fluids which may accumulate and become a focus of infection. Drains may be connected to a source of suction or may be allowed to drain naturally. The drain may remain in place for extended periods, for instance days or even weeks, and a suitable dressing is usually applied around it.
  • drains are not without disadvantages, notably the fact that the drain may allow infection into the wound. However, in some clinical situations their use is unavoidable.
  • One particular form of surgical drain is a chest drain, a flexible plastic tube that is inserted through the chest wall and into the pleural space to remove air, fluid or pus from the intra-thoracic space.
  • Chest drains are commonly made from clear plastics like PVC and soft silicone, and have diameters of from a few millimetres to one centimetre or more.
  • a major problem with the use of chest drains is clogging of the drain, and this often leads to the use of larger diameter tubes.
  • larger drains require larger incisions to be made in the patient's skin, and this in turn may increase the amount of body fluid that exudes from the incision around the drain tube. If that body fluid is allowed to accumulate it may lead to increased risk of infection, as well as requiring more frequent dressing changes, which may cause discomfort to the patient.
  • dressings for surgical drains that provide for improved management of wound exudate at the drain site, and thereby lead to reduced risk of infection, reduced frequency of dressing changes, and/or other benefits in relation to the prior art.
  • a dressing for a surgical drain comprising an absorbent body adapted to be fitted around the drain at a site at which the drain emerges from a patient's body, wherein the absorbent body comprises a base of open-celled foam and a cover member bonded to the base so as to form a substantially enclosed compartment between the cover member and the base, which compartment contains a superabsorbent material, and wherein exudate at said site is able to flow via the base member to the compartment and to be absorbed by the superabsorbent material within the compartment.
  • the dressing according to the invention is advantageous primarily in that it provides for effective absorption of exudate emitted from the drain site. Exudate is transported away from that site by the wicking action of the foam base and is absorbed by the superabsorbent material. High quantities of exudate may be absorbed before the dressing needs to be changed, thereby reducing the frequency of dressing changes required.
  • the absorbent body may have any suitable shape and dimensions, depending on the nature of the drain about which the dressing is to be applied, the part of the body to which it is to be applied, etc.
  • the absorbent body will be generally circular.
  • the absorbent body most preferably is formed with a slot or the like that extends from the perimeter of the absorbent body to a suitable position within the absorbent body, most commonly a substantially central position.
  • the slot is thus typically a radial slot, extending from the centre of the absorbent body to its perimeter.
  • the slot may terminate in an opening, the dimensions of which are preferably such that the drain is closely received within it, so that the wall of the opening fits closely against the drain.
  • the opening may be provided with outwardly extending radial slits.
  • the base of the absorbent body comprises an open-celled foam.
  • the foam may be any suitable foam known in the art.
  • the foam is a hydrophilic foam. More preferably, the hydrophilic foam is a polyurethane foam. Most preferably, the foam is an open-celled polyurethane foam.
  • the open cellular structure of the foam allows exudate from the drain site to pass through it.
  • the foam typically has a thickness of 0.5mm to 10mm, preferably from 1 mm to 5mm, or from 1 mm to 3mm, and the foam most preferably has a thickness of about 1 mm, about 2mm, or about 3mm.
  • the foam may incorporate an anti-microbial agent.
  • One antimicrobial agent that may be incorporated into the foam is silver.
  • metallic silver being relatively unreactive, ionic silver has been shown to have antimicrobial activity and has been previously used in wound dressings.
  • positively charged silver ions bind to negatively charged sites on proteins and nucleic acids in bacteria. This causes a number of effects, including alteration of the protein structure, rupture of the cell wall and/or cell death. It is believed that silver ions have multiple attack sites, interacting with a number of different functional groups in bacteria, including thiol groups,
  • the incorporation of silver into the foam results in the sustained release of low concentrations of silver ions over time. Such a slow release has been shown to stimulate healing and inhibit the growth of micro-organisms.
  • Any suitable method or form of silver known in the art may be used in the present invention.
  • the silver may be in the form of silver sulphadiazine.
  • Another antimicrobial that may be incorporated into the foam is
  • PHMB polyhexamethylene biguanide
  • COSMOCIL® CQ polyhexamethylene biguanide
  • the cover member that is bonded to the foam base in order to create the compartment may be of any suitable material. Such materials will typically be synthetic textile materials.
  • a preferred material is a heat-fusible non-woven web, eg of the type known as "dryweb", which may be of polyester.
  • Bonding of the cover member and the base may be brought about by any suitable means.
  • the parts of one or both of the juxtaposed surfaces of those components that are to be bonded together may be coated with a suitable adhesive, and the two components then pressed together.
  • the two components are bonded by using a fusible web material for the cover member, and apply heat and pressure to that material in the regions in which it is to be bonded to the foam.
  • a fusible web material for the cover member, and apply heat and pressure to that material in the regions in which it is to be bonded to the foam.
  • cover member and foam base both having the shape and dimensions of the finished absorbent body, may be bonded together as just described, with superabsorbent material previously having been positioned between them, in the region that constitutes the compartment of the finished absorbent body.
  • superabsorbent material previously having been positioned between them, in the region that constitutes the compartment of the finished absorbent body.
  • superabsorbent material is encapsulated between the two sheets, and then cutting individual absorbent bodies from the bonded sheets.
  • the features necessary to permit the absorbent body to be fitted around a drain may also be formed during the cutting operation, but may alternatively be introduced later, after assembly of the dressing.
  • the absorbent body is generally circular, with a radial slot extending from one point on the perimeter of the absorbent body to a central opening.
  • the cover member is bonded to the foam base around the perimeter of the circle, along the margins of the slot, and around the central opening.
  • the resulting compartment is generally C-shaped.
  • the compartment contains superabsorbent material.
  • Superabsorbent material in the context of the present invention means a material that is capable of absorbing many times its own mass of water (eg more than 100 times, and up to 200, 300, 400, 500 or more times its own mass of water).
  • the absorbent body of the present invention may comprise any superabsorbent material
  • preferred superabsorbent materials are polymeric superabsorbent materials and include alginate, polyacrylate (ie a salt of polyacrylic acid), polyacrylamide copolymers, ethylene maleic anhydride copolymer, carboxymethylcellulose, polyvinylalcohol copolymers, polyethylene oxide and starch -grafted copolymers of polyacrylonitrile.
  • the particles may be incorporated into a carrier material, for instance by being encapsulated between two layers of carrier material, eg tissue paper or the like.
  • An alginate superabsorbent may be sodium or calcium alginate.
  • Alginate superabsorbent is preferably in the form of a non-woven mat.
  • the most preferred superabsorbent material is sodium polyacrylate polymer.
  • Sodium polyacrylate polymer is a solid crystalline material, and is preferably incorporated into a layer in the form of particles encapsulated between two layers of carrier material, such as tissue paper.
  • carrier material such as tissue paper.
  • a specific example of a suitable material is Gelok® 14040S/S manufactured by Gelok International Corporation.
  • Superabsorbent materials comprising particles of super-absorbing polymer encapsulated between two layers of carrier material can be cut into shapes adapted to fit into the compartment of the absorbent body.
  • the compartment is generally C-shaped
  • a similarly-shaped pice of the superabsorbent material can be accommodated within the compartment.
  • the dressing of the invention will generally also comprise an adhesive skin contact layer, and a backing layer that forms a liquid- impermeable top surface of the dressing.
  • the absorbent body will generally be held between the backing layer and the skin contact layer.
  • the skin contact layer is the part of the dressing that, in use, is applied to the patient's skin, and will generally carry an adhesive. It is generally preferable that the adhesive that is used is one that is non-adherent and permits the wound dressing to be removed relatively easily and without causing trauma to the drain site and surrounding skin.
  • the adhesive may be, for instance, a hydrocolloid adhesive, a polyurethane adhesive, a hydrogel or, most preferably, a silicone adhesive, particularly a silicone gel.
  • Silicone adhesives offer numerous advantages. Most preferably, the silicone adhesive is in the form of a silicone gel of the type generally referred to as a "soft silicone".
  • Soft silicone adhesives are particularly suited for use as skin contact layers in wound dressings. They are soft, tactile and conformable, and exhibit good adhesion to dry skin but low adherence to an underlying wound. Thus, the dressing can be applied to a wound and subsequently removed without causing trauma to the wound. Silicone gels are adhesive but do not leave residue on a surface/substrate when removed.
  • Silicone gels suitable for use as skin contact materials in the present invention may be carried on a layer of melt-blown non-woven material, eg a sheet of melt-blown polyurethane (MBPU), as described in WO2007/1 13597.
  • a layer of melt-blown non-woven material eg a sheet of melt-blown polyurethane (MBPU), as described in WO2007/1 13597.
  • the reverse side of the MBPU may be coated with an adhesive, eg an acrylic adhesive, to affix the silicone gel/MBPU laminate to overlying
  • an adhesive eg an acrylic adhesive
  • components of the dressing eg to the absorbent body and/or a backing layer of the form described below.
  • the skin contact layer generally extends beyond the absorbent body, to provide a greater contact area between the dressing and the skin. Thus, a border is provided around the absorbent body.
  • the adhesive may be provided only on the parts of the skin contact layer that form the border around the absorbent body. More commonly, however, the skin contact adhesive is present across the full extent of the dressing.
  • the skin contact layer is preferably provided with perforations to increase breathability of the dressing, and so lessen the likelihood of maceration of the skin to which the dressing is applied.
  • the perforations may also provide for greater ease of removal of the dressing, and improved flexibility and conformity.
  • the dressing according to the invention typically comprises a backing layer, which forms a barrier between the wound and the surrounding atmosphere. Any suitable material known in the art may be used for the backing layer.
  • the backing layer will generally be impermeable to exudate and other liquids, but is preferably permeable to air and moisture vapour.
  • the backing layer preferably exhibits a relatively high moisture vapour transmission rate (MVTR). 2
  • the MVTR of the backing layer may be at least 300g/m /24h, more suitably at least 500g/m 2 /24h and preferably at least 700g/m 2 /24h at 37 °C and 100% to 10% relative humidity difference.
  • the backing layer is most preferably a plastics film having the desired
  • the backing layer may be a polyurethane film.
  • the backing layer will generally be of the same dimensions as the skin contact layer, that is to say it will generally be larger in size than the absorbent body, such that it extends beyond the edge of the absorbent body on one or more sides.
  • the backing layer extends beyond the edge of the absorbent body on all sides, forming a border around the absorbent body, and is bonded to the peripheral region of the skin contact layer.
  • the underside of the backing layer may carry an adhesive, eg an acrylic adhesive, to bond the backing layer to underlying components of the dressing, eg to the upper surface of the absorbent body and to the peripheral region of the skin contact layer.
  • an adhesive eg an acrylic adhesive
  • the skin contact layer may be provided with relatively large openings in order to expose the skin to the adhesive on the underside of the backing layer.
  • That adhesive eg acrylic adhesive
  • the typically nonadherent adhesive eg silicone gel
  • the backing layer may constitute the cover member of the compartment, ie the backing layer may be affixed directly to the foam base, with the compartment being the space between the foam base and the backing layer.
  • the dressing will generally be supplied with a releasable liner on its underside.
  • the releasable liner may cover the adhesive portions of the dressing prior to use, and be removed from the dressing immediately before application of the dressing. This reduces the risk of contamination of the dressing and facilitates handling of the dressing.
  • releasable liners are commonly used on dressings known in the art, and suitable materials which can be employed in the present invention will be familiar to the skilled worker.
  • the releasable liner may be of a suitable plastics sheet or a siliconised paper or the like.
  • the releasable liner may be a single sheet which covers the underside of the dressing, or may be formed of two or more sheets.
  • the releasable liner may further comprise one or more tabs to enable the liner to be easily removed from the dressing before use.
  • the parts may either overlap or abut and extend outwards from the dressing, thus providing an easy method for removal of the releasable liner.
  • Figure 1 is a plan view of a dressing according to the invention.
  • Figure 2 is an underside plan view of the dressing of Figure 1 , partially cut away;
  • Figure 3 is a cross-sectional view (on an enlarged vertical scale for clarity) on the line Ill-Ill in Figure 1 ;
  • Figure 4 is a plan view of an absorbent body forming part of the dressing of Figures 1 to 3, showing hidden detail.
  • a chest drain dressing according to the invention is generally designated 1 , and is circular in form, with a diameter of approximately 15cm.
  • the dressing 1 has a central opening 10 that is connected to the edge of the dressing 1 by an elongate slot 12.
  • a chest drain is received within the opening 10 such that the walls of the opening abut the drain.
  • a number of short slits 14 extend outwardly from the opening 1 0, in order to enable the dressing 1 to be fitted around a larger diameter drain.
  • the dressing 1 comprises a backing layer 16 that constitutes the top (ie non-skin- facing) surface of the dressing 1 , an adhesive skin contact layer 18 that, prior to use, is covered by a three part release liner 20a-c, and an absorbent body 22, the outline of which is shown in Figure 1 , and the structure of which is described in more detail below, with reference to Figures 3 and 4.
  • the backing layer 16 is transparent, with the result that features of the underlying components (ie the absorbent body 22 and the skin contact layer 18) are visible through it.
  • the skin contact layer 18 is provided with a regular array of small and large perforations 24a,24b (see Figure 2).
  • these perforations are shown as hidden detail only in part of the drawing, though in reality they would be visible around the full periphery of the dressing 1 .
  • the backing layer 16 could alternatively be opaque, in which case these underlying features would not be visible when the dressing 1 is viewed from above, as in Figure 1 .
  • the skin contact layer 18 is in the form of a sheet of melt-blown polyurethane that is impregnated with and coated on its underside (as viewed in Figure 3) with a silicone gel non-adherent adhesive, as described in WO2007/1 13597.
  • the skin contact layer 18 is of the same dimensions as the backing layer 16, such that the skin contact layer 18 and backing layer 16 form a border around the periphery of the dressing 1 .
  • the absorbent body 22 comprises three components: a foam base 32, a cover 34 and a superabsorbent 36.
  • the foam base 32 is of hydrophilic, open-celled polyurethane foam and is generally circular in shape, save for a radial cut-out 33 that, in the assembled dressing 1 , is aligned with the slot 12.
  • the foam base 32 is also provided with a central opening 10a that constitutes part of the central opening 10 of the assembled dressing.
  • the foam base 32 has a thickness of approximately 2mm.
  • the cover 34 is a sheet of fusible polyester web that is bonded (by the application of heat and pressure) to the upper surface of the foam base 32 around the periphery of the base 32, along the margins of the cut-out 33 and around the central opening 10a.
  • the regions over which the cover 34 is bonded to the foam base 32 are indicated by "x" markings in Figure 4.
  • a generally C-shaped compartment is thus defined between the cover 34 and the foam base 32, and this is occupied by the correspondingly-shaped
  • the superabsorbent 36 comprises particulate polyacrylate polymer encapsulated between two sheets of tissue paper.
  • the underside of the backing layer 16 is coated with acrylic adhesive by which the backing layer 16 is affixed to the upper surface of the skin contact layer 18 in the border regions of the dressing 1 , and to the upper surface of the absorbent body 22 in the central region of the dressing.
  • the large perforations 24b in the skin contact layer around the periphery of the dressing 1 expose the patient's skin to the acrylic adhesive on the underside of the backing layer 16. This provides for more secure attachment of the dressing 1 to the skin, the relatively strong adherence of the acrylic adhesive where it contacts healthy skin not being a problem as the locations at which this occurs are sufficiently distant from the drain site.
  • the dressing 1 may be manufactured by a) forming the absorbent body 22, by applying a sheet of cover member
  • the release liners 20a-c can be applied to the skin contact layer 18 at any convenient stage of manufacture.
  • the features that permit the dressing 1 to be fitted around a chest drain may be formed in the various components prior to assembly of the dressing 1 , but it is generally more convenient for those features to be formed in a subsequent cutting operation, after assembly of the various components as described above. Indeed, the formation of those features may be done as part of a cutting process in which individual finished dressings are cut from a sheet. Individual dressings may then be sterile-packaged, eg by gamma- irradiation or ethylene oxide.
  • the dressing 1 is removed from its packaging and the release liners 20a-c removed.
  • the parts of the dressing 1 at opposite sides of the slot 12 are moved slightly apart to allow the dressing 1 to be fitted around a chest drain, with the drain occupying the central opening 10 and the skin contact layer 18 facing the patient's skin.
  • Those parts of the dressing 1 are then brought back together and the dressing 1 pressed gently into engagement with the patient's skin.
  • any fluid escaping from the drain site contacts the exposed edges of the foam base 32 within the central opening 10.
  • the fluid is transported by wicking action through the foam base 32 and hence comes into contact with the superabsorbent 36, which absorbs the fluid, swelling as it does so.
  • the backing layer 16 is sufficiently thin and deformable to accommodate that swelling. Accumulation of fluid at the drain site is thereby avoided, and the frequency of required dressing changes and the risk of infection at the drain site are reduced.

Landscapes

  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Pulmonology (AREA)
  • Epidemiology (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Anesthesiology (AREA)
  • Materials For Medical Uses (AREA)

Abstract

L'invention concerne un pansement, pour un drain chirurgical, qui peut absorber un exsudat provenant du site de drain. Le pansement comporte un corps absorbant, conçu pour être ajusté autour du drain à un site auquel le drain émerge du corps d'un patient, le corps absorbant comportant une base de mousse à cellules ouvertes et un élément de revêtement collé à la base de façon à former un compartiment sensiblement fermé entre l'élément de revêtement et la base. Le compartiment contient un matériau super absorbant et l'exsudat, au niveau du site de plaie, peut s'écouler par l'intermédiaire de l'élément de base vers le compartiment et être absorbé par le matériau super absorbant à l'intérieur du compartiment.
PCT/GB2015/051364 2014-05-14 2015-05-08 Pansement pour drain chirurgical WO2015173546A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1408550.0 2014-05-14
GB1408550.0A GB2526267B (en) 2014-05-14 2014-05-14 Dressing for surgical drain

Publications (1)

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WO2015173546A1 true WO2015173546A1 (fr) 2015-11-19

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WO (1) WO2015173546A1 (fr)

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WO2018226328A1 (fr) * 2017-06-07 2018-12-13 Kci Licensing, Inc. Interface tissulaire comprenant de multiples couches
CN109985305A (zh) * 2019-04-09 2019-07-09 徐州市妇幼保健院 一种防液体渗漏性强的敷贴
US20200101192A1 (en) * 2018-09-30 2020-04-02 Alexander Folwarzny Wound dressing
US10968543B2 (en) 2011-12-01 2021-04-06 Convatec Technologies Inc. Wound dressing for use in vacuum therapy
US11116884B2 (en) 2010-12-08 2021-09-14 Convatec Technologies Inc. Integrated system for assessing wound exudates
US11135315B2 (en) 2010-11-30 2021-10-05 Convatec Technologies Inc. Composition for detecting biofilms on viable tissues
CN113576759A (zh) * 2021-08-20 2021-11-02 乔晓雪 一种吸收敷料及其应用
US11241339B2 (en) 2011-11-29 2022-02-08 Convatec Inc. Perforated binder for laminated wound dressing
US11241525B2 (en) 2010-12-08 2022-02-08 Convatec Technologies Inc. Wound exudate monitor accessory
US11266774B2 (en) 2016-07-08 2022-03-08 Convatec Technologies Inc. Fluid collection apparatus
US11286601B2 (en) 2012-12-20 2022-03-29 Convatec Technologies, Inc. Processing of chemically modified cellulosic fibres
US11331221B2 (en) 2019-12-27 2022-05-17 Convatec Limited Negative pressure wound dressing
US11452808B2 (en) 2016-07-08 2022-09-27 Convatec Technologies Inc. Fluid flow sensing
US11458044B2 (en) 2008-09-29 2022-10-04 Convatec Technologies Inc. Wound dressing
US11583430B2 (en) 2011-09-02 2023-02-21 Convatec Ltd. Skin contact material
US11596554B2 (en) 2016-07-08 2023-03-07 Convatec Technologies Inc. Flexible negative pressure system
US11628093B2 (en) 2008-05-08 2023-04-18 Convatec Technologies, Inc. Wound dressing
US11723808B2 (en) 2016-03-30 2023-08-15 Convatec Technologies Inc. Detecting microbial infections in wounds
US11740241B2 (en) 2016-03-30 2023-08-29 Synovo Gmbh Construct including an anchor, an enzyme recognition site and an indicator region for detecting microbial infection in wounds
US11771819B2 (en) 2019-12-27 2023-10-03 Convatec Limited Low profile filter devices suitable for use in negative pressure wound therapy systems
GB2617807A (en) * 2021-12-01 2023-10-25 Brightwake Ltd Dressing for a medical tube

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WO2004089265A2 (fr) * 2003-04-10 2004-10-21 Bristol-Myers Squibb Company Pansement de plaies
DE102008034363A1 (de) * 2007-08-03 2009-02-05 Birgit Riesinger Wundpflegeartikel mit absorbierender Hülle
US20110004172A1 (en) * 2009-07-06 2011-01-06 Paul Hartmann Ag Device for vacuum therapy of wounds
WO2013149078A1 (fr) * 2012-03-28 2013-10-03 Kci Licensing, Inc. Systèmes à pression réduite, pansements, et procédés de facilitation de la séparation de parties de composants électroniques et cliniques
US20130261587A1 (en) * 2012-03-29 2013-10-03 Principle Business Enterprises, Inc. Disposable absorbent moisture management dressing
US20130317406A1 (en) * 2010-04-16 2013-11-28 Christopher Brian Locke Dressings and methods for treating a tissue site on a patient

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FR2974004B1 (fr) * 2011-04-15 2014-05-02 Urgo Lab Pansement absorbant hydrocellulaire, ses utilisations pour le traitement des plaies chroniques et aigues

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WO2004089265A2 (fr) * 2003-04-10 2004-10-21 Bristol-Myers Squibb Company Pansement de plaies
DE102008034363A1 (de) * 2007-08-03 2009-02-05 Birgit Riesinger Wundpflegeartikel mit absorbierender Hülle
US20110004172A1 (en) * 2009-07-06 2011-01-06 Paul Hartmann Ag Device for vacuum therapy of wounds
US20130317406A1 (en) * 2010-04-16 2013-11-28 Christopher Brian Locke Dressings and methods for treating a tissue site on a patient
WO2013149078A1 (fr) * 2012-03-28 2013-10-03 Kci Licensing, Inc. Systèmes à pression réduite, pansements, et procédés de facilitation de la séparation de parties de composants électroniques et cliniques
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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11628093B2 (en) 2008-05-08 2023-04-18 Convatec Technologies, Inc. Wound dressing
US11458044B2 (en) 2008-09-29 2022-10-04 Convatec Technologies Inc. Wound dressing
US11135315B2 (en) 2010-11-30 2021-10-05 Convatec Technologies Inc. Composition for detecting biofilms on viable tissues
US11241525B2 (en) 2010-12-08 2022-02-08 Convatec Technologies Inc. Wound exudate monitor accessory
US11116884B2 (en) 2010-12-08 2021-09-14 Convatec Technologies Inc. Integrated system for assessing wound exudates
US11583430B2 (en) 2011-09-02 2023-02-21 Convatec Ltd. Skin contact material
US11241339B2 (en) 2011-11-29 2022-02-08 Convatec Inc. Perforated binder for laminated wound dressing
US10968543B2 (en) 2011-12-01 2021-04-06 Convatec Technologies Inc. Wound dressing for use in vacuum therapy
US11286601B2 (en) 2012-12-20 2022-03-29 Convatec Technologies, Inc. Processing of chemically modified cellulosic fibres
US11723808B2 (en) 2016-03-30 2023-08-15 Convatec Technologies Inc. Detecting microbial infections in wounds
US11740241B2 (en) 2016-03-30 2023-08-29 Synovo Gmbh Construct including an anchor, an enzyme recognition site and an indicator region for detecting microbial infection in wounds
US11452808B2 (en) 2016-07-08 2022-09-27 Convatec Technologies Inc. Fluid flow sensing
US11266774B2 (en) 2016-07-08 2022-03-08 Convatec Technologies Inc. Fluid collection apparatus
US11596554B2 (en) 2016-07-08 2023-03-07 Convatec Technologies Inc. Flexible negative pressure system
WO2018226328A1 (fr) * 2017-06-07 2018-12-13 Kci Licensing, Inc. Interface tissulaire comprenant de multiples couches
US20200101192A1 (en) * 2018-09-30 2020-04-02 Alexander Folwarzny Wound dressing
US11911525B2 (en) * 2018-09-30 2024-02-27 Alexander Folwarzny Wound dressing
CN109985305A (zh) * 2019-04-09 2019-07-09 徐州市妇幼保健院 一种防液体渗漏性强的敷贴
US11331221B2 (en) 2019-12-27 2022-05-17 Convatec Limited Negative pressure wound dressing
US11771819B2 (en) 2019-12-27 2023-10-03 Convatec Limited Low profile filter devices suitable for use in negative pressure wound therapy systems
CN113576759A (zh) * 2021-08-20 2021-11-02 乔晓雪 一种吸收敷料及其应用
GB2617807A (en) * 2021-12-01 2023-10-25 Brightwake Ltd Dressing for a medical tube

Also Published As

Publication number Publication date
GB2526267B (en) 2020-10-28
GB2526267A (en) 2015-11-25
GB201408550D0 (en) 2014-06-25

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