WO2010147533A1 - Wound dressing with high liquid handling capacity - Google Patents
Wound dressing with high liquid handling capacity Download PDFInfo
- Publication number
- WO2010147533A1 WO2010147533A1 PCT/SE2010/050513 SE2010050513W WO2010147533A1 WO 2010147533 A1 WO2010147533 A1 WO 2010147533A1 SE 2010050513 W SE2010050513 W SE 2010050513W WO 2010147533 A1 WO2010147533 A1 WO 2010147533A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- layer
- wound
- retaining
- wound dressing
- Prior art date
Links
- 239000007788 liquid Substances 0.000 title description 64
- 239000000853 adhesive Substances 0.000 claims abstract description 26
- 230000001070 adhesive effect Effects 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 25
- 230000002745 absorbent Effects 0.000 claims description 16
- 239000002250 absorbent Substances 0.000 claims description 16
- 229920006254 polymer film Polymers 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 5
- 239000013464 silicone adhesive Substances 0.000 claims description 5
- 238000009739 binding Methods 0.000 claims description 4
- 230000027455 binding Effects 0.000 claims description 4
- 238000002604 ultrasonography Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 180
- 206010052428 Wound Diseases 0.000 description 74
- 208000027418 Wounds and injury Diseases 0.000 description 74
- 230000032258 transport Effects 0.000 description 11
- 230000008020 evaporation Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 239000006261 foam material Substances 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000035876 healing Effects 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 241001640753 Fibrella Species 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 210000000416 exudates and transudate Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920004482 WACKER® Polymers 0.000 description 1
- 238000013006 addition curing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- A61F13/0203—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
- A61F13/02—Adhesive bandages or 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
- A61F13/0226—Adhesive bandages or dressings with fluid retention members characterised by the support layer
-
- 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
- A61F13/0246—Adhesive bandages or dressings characterised by the skin-adhering layer
- A61F13/025—Adhesive bandages or dressings characterised by the skin-adhering layer having a special distribution arrangement of the adhesive
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F13/53717—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction the layer having a promotional function on liquid propagation in the horizontal direction
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53743—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53743—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
- A61F13/53747—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers the layer is facing the topsheet
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53743—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
- A61F13/53756—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers the layer facing the back-sheet
-
- 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
- A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
-
- 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
- A61F13/0246—Adhesive bandages or dressings characterised by the skin-adhering layer
- A61F13/0253—Adhesive bandages or dressings characterised by the skin-adhering layer characterized by the adhesive 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
- A61F13/15—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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F13/53713—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction the layer having a promotional function on liquid propagation in the vertical direction
-
- 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
- A61F2013/00727—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
- A61F2013/00731—Plasters means for wound humidity control with absorbing pads
- A61F2013/00744—Plasters means for wound humidity control with absorbing pads containing non-woven
-
- 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
- A61F2013/00361—Plasters
- A61F2013/00727—Plasters means for wound humidity control
- A61F2013/00761—Plasters means for wound humidity control with permeable adhesive layers
-
- 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
- A61F2013/00761—Plasters means for wound humidity control with permeable adhesive layers
- A61F2013/00782—Plasters means for wound humidity control with permeable adhesive layers 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
- A61F2013/00855—Plasters pervious to air or vapours
-
- 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
- A61F2013/00876—Plasters pervious to air or vapours vapour permeability >500 g/mg/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
- 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
- A61F2013/53051—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 being only in particular parts or specially arranged
-
- 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
- A61F2013/530868—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 characterized by the liquid distribution or transport means other than wicking layer
- A61F2013/530897—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 characterized by the liquid distribution or transport means other than wicking layer having capillary means, e.g. pore or fibre size gradient
-
- 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
- A61F2013/530868—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 characterized by the liquid distribution or transport means other than wicking layer
- A61F2013/530897—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 characterized by the liquid distribution or transport means other than wicking layer having capillary means, e.g. pore or fibre size gradient
- A61F2013/530905—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 characterized by the liquid distribution or transport means other than wicking layer having capillary means, e.g. pore or fibre size gradient being hydrophilic
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F2013/53721—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means
Definitions
- the present invention relates to a wound dressing with a wound pad that includes a liquid-transporting first layer, a liquid-retaining and liquid- transporting second layer, which is arranged on top of the first layer, and a distributing layer arranged between the first layer and the second layer, and with a layer of vapour-permeable material which is arranged on top of the second layer and which extends peripherally outside the wound pad, wherein at least that part of the vapour-permeable layer extending peripherally outside the wound pad is coated with adhesive.
- a dressing of this kind is known in the form of Mepilex Border®, which is sold by Molnlycke Health Care AB, Gothenburg, Sweden.
- Mepilex Border® which is sold by Molnlycke Health Care AB, Gothenburg, Sweden.
- a great advantage of this dressing is that, because of the way it controls the liquid from the wound, it can be left in place on a wound for quite a long time without needing to be changed. From the point of view of liquid handling, the dressing does not need to be changed before it leaks. It is well known that changing a dressing tends to disrupt the healing of a wound, and this means that the fewer changes of dressings that are needed the better. Of course, fewer changes of dressings also mean less work for nursing personnel and also cost savings.
- the object of the present invention it to increase the ability of such a dressing to handle liquid from wounds, such that it can be left in place on the wound for a longer period of time or is able to handle more liquid during the same period
- a wound dressing with a wound pad and with a layer of vapour-permeable material arranged on top of the wound pad and extending peripherally outside the wound pad, wherein at least that part of the vapour-permeable layer extending peripherally outside the wound pad is coated with adhesive, characterized in that the wound pad includes a liquid- retaining and liquid-transporting layer, and an upper distributing layer and lower distributing layer which bear against the top and underside, respectively, of the liquid-retaining and liquid-transporting layer.
- the upper distributing layer increases the amount of liquid that leaves the dressing by evaporation and therefore the amount of liquid that can be handled by the dressing.
- a dressing according to the invention can be left in place on a wound for a longer period of time than said known dressing without having to be changed, or it can handle more liquid during the same period of time that the known dressing is intended to remain in place on a wound.
- the wound pad includes a liquid- transporting first layer, which is arranged under the lower of the distributing layers and bears thereon.
- the layers of the wound pad are preferably connected adhesively or mechanically to one another, and the layer of vapour-permeable material is connected adhesively to the wound pad.
- the layers of the wound pad can instead be connected to one another with the aid of heat and pressure or with the aid of ultrasound. This ensures that capillary forces and wetting forces inside the dressing have the intended effect.
- the liquid-retaining and liquid-transporting second layer is composed of one or more plies containing a mixture of hydrophilic or hydrophilized absorbent fibres and superabsorbents in powder form, fibre form or other form. Binding fibres can be mixed into the liquid-retaining and liquid- transporting second layer. In this way, it is possible to achieve a desired and suitable balance between the properties of this layer in respect of transport and retention of liquid.
- the liquid-retaining and liquid-transporting layer in this case advantageously has capillaries of different sizes, wherein the capillaries in contact with the second distributing layer are smaller than the capillaries in other areas of the liquid-retaining and liquid-transporting second layer. Moreover, the proportion of superabsorbents in the mixture of absorbent fibres and superabsorbents is greater in an upper part of the liquid-transporting and liquid-retaining layer than in a lower part thereof.
- One of the distributing layers or both of the distributing layers can be integrated in the liquid-retaining and liquid-transporting layer.
- the liquid-retaining and liquid-transporting second layer can be composed of polymer foam with or without admixture of superabsorbents.
- the liquid-transporting first layer can advantageously be composed of a polymer foam.
- the distributing layers can be composed of tissue, hydrophilic nonwoven material or polymer foam.
- the vapour-permeable layer is preferably composed of a polymer film that has a vapour permeability greater than 2000 g/m 2 per 24 hours, measured according to ASTM D 6701.
- the wound pad can be coated on its underside with a liquid-permeable layer of adhesive, wherein the adhesive coating on the liquid-transporting first layer can be discontinuous and composed of a silicone adhesive placed on a perforated support, which in turn is secured to the underside of the wound pad and to the vapour-permeable film in the part thereof extending peripherally outside the wound pad.
- Figure 1 shows a schematic cross section through a wound dressing according to a first preferred embodiment of the invention
- Figure 2 shows a view, similar to figure 1, of a wound dressing according to a second preferred embodiment of the invention.
- FIG 1 shows a first preferred embodiment of a wound dressing 1 according to the invention.
- the dressing 1 comprises a wound pad 2, which is coated on its underside with a layer 4 of skin-compatible adhesive.
- the term "underside” refers to the lower face of the wound pad 2 in Figure 1 which during use of the dressing will lie nearest to a wound.
- a dressing may be positioned in such a way that the underside shown in Figure 1 may be facing upwards for example.
- the terms “over”, “under”, “upper”, “lower”, “on top of and similar references to position used in the description and in the claims refer to the relative location of various components with respect to one another when the dressing is in the situation shown in Figure 1.
- a layer 8 of vapour-permeable material extends on top of the wound pad 2 and peripherally outside the wound pad.
- the layer 4 is composed of a support in the form of a perforated polyurethane layer coated with silicone adhesive covering the areas between the perforations, which layer also extends over that part of the layer 8 extending peripherally outside the wound pad 2.
- the perforated support layer is preferably glued to the wound pad 2 and to the cover layer 8.
- the wound pad 2 includes a liquid-transporting first layer 3 on the top face of which a first distributing layer 5 extends. Arranged on top of the latter layer there is a liquid-retaining and liquid-transporting layer 6. Finally, the wound pad 2 has a second distributing layer 7 arranged on the top face of the liquid- retaining and liquid-transporting layer 6.
- Distributing layer means a layer of absorbent material with a thickness of less than 5 mm, preferably of less than 3 mm, having the ability to distribute absorbed liquid in directions at right angles to the direction of thickness.
- a cover layer 8 of vapour-permeable polymer film extends on the top face of the second distributing layer and over the side edges of the layers 3-7, and it also extends outside the peripheries of these layers at the level of the adhesive layer 4.
- the polymer film 8, at least on the underside of the part extending outside the peripheries of the absorbent layers 3-7, is coated with adhesive which, as is shown in Figure 1, can represent a continuation or part of the adhesive layer 4.
- the adhesive layer 4 in the present dressing 1 has two functions. First, it is intended to prevent the wound pad 2 from becoming caught in the wound and, second, it is intended to ensure that the dressing sits firmly on the skin.
- the adhesive coating 4 must therefore be liquid-permeable and, for this reason, is arranged discontinuously by the presence of the pattern of perforations.
- Another possibility would be to apply an adhesive coating that is itself liquid- permeable, or to do without an adhesive coating on the underside of the wound pad if the wound pad 2 has little tendency to become caught in the wound.
- the underside of the cover layer 8 must always be provided with an adhesive coating, at least in the part extending peripherally outside the wound pad.
- the adhesive coating 4 can be composed of any skin-compatible adhesives known for use in wound dressings.
- soft skin-compatible adhesives are preferred, e.g. polyacrylates or silicone adhesive.
- a great advantage of soft adhesives is that they can normally be removed from the skin without damaging it.
- Silicone adhesive is particularly preferred since it additionally has the property whereby the adherence to skin does not appreciably increase over time, which is advantageous especially for dressings that are designed to remain in place on a wound for a long period of time, say for several days.
- Addition-curing RTV (Room Temperature Vulcanizing) silicone systems which crosslink after admixture and form a self-adhesive elastomer, are examples of suitable adhesives.
- EP 0 300 620 Al gives examples of silicone systems of this kind.
- Wacker SiIGeI 612 is a commercially available RTV silicone system from Wacker-Chemie GmbH, Kunststoff, Germany. By varying the proportions between the two components included in this system, it is possible to vary the softness and level of adherence of the elastomer that is formed. This silicone system is particularly suitable for the adhesive coating 4.
- soft silicone elastomers are NuSiI MED-6340, NuSiI MED3-6300, NuSiI MED12-6300 from NuSiI Technology, Carpintieria, USA and Dow Corning Corporation, Midland, USA.
- a hot-melt adhesive similar to Dispomelt® 70-4647 from National Starch and Chemical Company, Bridgewater, NJ, USA can also be used.
- the purpose of the first layer 3 of liquid-transporting material is to take up excess liquid from a wound as quickly as possible. For this reason, it should lie near the wound bed, which means that the adhesive layer 4 should be thin.
- the layer 3 can advantageously be composed of an absorbent foam material, e.g. a polyurethane foam (see US 6,051,747 for example).
- absorbent foam material e.g. a polyurethane foam (see US 6,051,747 for example).
- Absorbent materials other than foam material can also be used, for example fibre material based on cellulose fibres or other absorbent fibres.
- the first distributing layer 5 is intended to drain absorbed liquid from the layer 3 and for this reason has capillaries that are smaller than the capillaries in the layer 3. This means that the flow of liquid in the first layer 3 is substantially vertical when the dressing, during use, is positioned in the manner shown in
- the first distributing layer 5 Another purpose of the first distributing layer 5 is to ensure that liquid absorbed from the layer 3 is distributed sideways.
- the capillaries in the thin distributing layer 5 are mainly horizontal and are smaller than the capillaries in the layer 3, the liquid transport in the sideways direction takes place to a greater extent in this layer than in the first layer 3 of absorbent material.
- the distributing layer 5 is preferably composed of fibre-based material containing hydrophilic or hydrophilized fibres, such as tissue or nonwoven material made up of or containing pulp fibres or cellulose-based fibres, e.g. rayon, or other absorbent fibres, e.g. cotton fibres. In such material, many of the capillaries run horizontally. Other materials too can conceivably be used as distributing layer, e.g. woven or knitted textile material.
- An example of a suitable material for the distributing layer 5 is Fibrella 2000 from Suominen Corp., Tampere, Finland, with a weight per unit area of 30-50 g/m 2 . It is also conceivable to use thin polymer foam materials as distributing layer.
- the liquid-retaining and liquid-transporting layer 6 must, on the one hand, have a high retention capacity, i.e. must ensure that liquid absorbed from the wound is not returned from the dressing to the wound bed in the event of external pressure, and, on the other hand, must be able to transport liquid from the first distributing layer to the second distributing layer.
- a large surface area of the layer 6 comes quickly into contact with absorbed liquid, for which reason a large part of the layer 6 will be involved in transporting absorbed liquid to the top face of the layer 6 and thereby to the second distributing layer 7.
- the liquid-retaining and liquid-transporting layer 6 has smaller capillaries than the liquid-transporting layer 3. In this way, the suction force of the capillaries in the layer 6 is greater than the suction force of the capillaries in the layer 3, which means that the layer 6, not the layer 3, is first to suck liquid from the first distributing layer 5.
- the liquid-retaining and liquid-transporting layer 6 is composed of a mixture of fibres and superabsorbents, e.g. polyacrylates in powder form, fibre form or other form.
- the fibres can be composed of hydrophilic or hydrophilized absorbent fibres, e.g. viscose fibres, cotton fibres, etc., and binding fibres, e.g. synthetic fibres of thermoplastic material, e.g. polyester.
- the absorbent fibres serve for the liquid transport and the superabsorbents serve to increase the liquid retention capacity under the effect of pressure.
- the liquid-retaining and liquid-transporting layer 6 can be composed of two or more plies of different mixtures of fibres and superabsorbents.
- the liquid-retaining and liquid-transporting layer can be made up of three such layers, in which the proportion of superabsorbents is greatest in the middle ply.
- the proportion of superabsorbents in the mixture of absorbent fibres and superabsorbents is expediently 5-60% by weight.
- the liquid-retaining and liquid-transporting layer 6 can also be made up of the same material as the lower layer 3 with or without admixture of superabsorbent particles. Foam materials other than polyurethane can also be used for the layers 3 and 6.
- the second distributing layer 7 sucks liquid from the liquid-retaining and liquid-transporting layer 6 as soon as liquid absorbed in this layer 6 reaches the top face of the liquid-retaining and liquid-transporting layer 6.
- the capillaries in this layer can have a size gradient in which the size decreases in the upward direction.
- the second distributing layer 7 can be made of the same material as the first distributing layer 5.
- An example of a suitable material is Fibrella 2000.
- Liquid that has been absorbed in the distributing layer 7 will evaporate through title vapour-permeable polymer film 8. It has been found that the evaporation rate, i.e. the amount of vapour transported through the vapour-permeable film, increases in line with the concentration of liquid in the area under the film and also when the liquid is in contact with the underside of the film.
- the distributing layer 7 the highest possible concentration of liquid is achieved in the area under the film, at the same time as the distributing layer ensures that as great a surface area as possible has a high concentration of liquid.
- the latter preferably has very small capillaries and is advantageously thin.
- the layer 3 is preferably fixed to the first distributing layer 5 by a thin layer of glue, for example an adhesive coating with a weight per unit area of 10 g/m 2 .
- the layer 6 is air-laid on the first distributing layer 5 and/or the second distributing layer 7 and in this way has good contact with said layer/layers through mechanical bindings. It is possible to further increase the contact between the layers 5 and 6, 6 and 7 or 5, 6 and 7 by entangling or needling.
- the second distributing layer 7 is preferably fixed to the layer 6 and to the film 8 by means of thin layers of adhesive.
- a method for achieving good contact between distributing layers 5, 7 of fibre material and the liquid-retaining and liquid-transporting layer 6 is one in which, during the air-laying of this layer, a thin layer of the fibres that are to form the distributing layer 5 or 7 is first air-laid, after which the various fibres that form the layer 6 are air-laid, and the air-laying is then completed with a thin layer of fibres that are to form the distributing layer 7 or 5, after which the various layers 5, 6 and 7 are bound together to form an integrated unit with the aid of heat and pressure, for example. It is of course conceivable to use this method to integrate only one of the distributing layers with the layer 6.
- the film can advantageously be tightly secured to these edges.
- the fact that the film 8 is vapour-permeable also permits evaporation of moisture on the skin in that part of the film extending peripherally outside the edges of the layers 3-7 of absorbent material, under the condition naturally that the adhesive coating 4 is also vapour-permeable in this area.
- vacuum forming can be used to give it a three-dimensional shape corresponding to the shape of the layers. This preliminary shaping is advantageous even if the film is not secured adhesively to the edges of the layers 3-7.
- the polymer film 8 can be composed of a film of polyethylene, polyester, polytetrafluoroethylene or polyurethane, which is microporous or is in some other way made permeable to vapour.
- a vapour-permeable film is intended to mean that the plastic film, under normal conditions, allows vapour to pass through, but not liquid.
- the vapour permeability (WVTR: Water Vapour Transmission Rate) of the polymer film 8 must be greater than 2000 g/m 2 per 24 hours, measured by ASTM D 6701.
- the polymer film is preferably composed of a monolithic film, i.e. a film in which the vapour permeability increases markedly if the film is in contact with liquid.
- An example of such a film is Platilon® 2202 from Epurexs Films GmbH & Co KG, Bomlitz, Germany.
- the dressing according to the invention is intended to remain in place on a wound for a period of several days without having to be changed.
- the healing process is facilitated by the fact that the wound is thus able to heal over a long period of time without interruption.
- a crucial factor in determining how long a dressing can be left in place on a seeping wound lies in the liquid handling capacity of the dressing.
- Liquid handling capacity means the amount of liquid that a dressing can take up from a wound before it stops functioning , i.e. can no longer absorb wound exudate released from the wound, which is manifested by leakage taking place.
- the liquid handling capacity is therefore dependent on the amount of liquid that can be stored in the dressing and on the amount of liquid evaporated.
- the maximum amount of liquid that can be stored is not dependent on time
- the amount of liquid that is evaporated is time- dependent and represents an important parameter in dressings that are intended to be used for a long period of time.
- the present invention means that the vapour permeability of the polymer film 8 can be used in a better way than before, by virtue of the fact that the period of maximum evaporation increases considerably through the provision of a distributing layer between the polymer film and the liquid-retaining and liquid- transporting layer and thus also the amount of liquid that the dressing can handle during a defined period of time.
- the evaporation parameter is of great importance.
- the first distributing layer 5 has the effect that the lower layer 3 is drained more quickly, such that absorbed liquid quickly reaches the layer 6 and can be sucked up through the surface of said layer. This means that absorbed liquid quickly reaches the upper distributing layer.
- FIG. 2 shows a dressing 1' according to a second embodiment of the invention.
- the components of the dressing 1' that correspond to similar components in the dressing 1 according to Figure 1 have been given the same reference numbers with addition of a prime symbol.
- the wound pad 2' is thus composed of a liquid-retaining and liquid-transporting layer 6' which is arranged between two distributing layers 5' and T. Liquid released from a wound is thus first absorbed in the distributing layer 5' and is spread across the surface thereof.
- the distributing layer Since the distributing layer is thin and has small capillaries, it quickly becomes saturated, and liquid absorbed in the distributing layer 5' quickly comes into contact with the liquid-transporting 6', which transports the liquid onwards to the second distributing layer 7', from which liquid evaporates through the vapour-permeable film 8'. Some of the liquid absorbed in the layer 6' will be stored in superabsorbent particles that are optionally present. When the storage capacity of the wound pad has been used to the maximum, i.e. when absorbent fibres and superabsorbents in the layer 6' are filled with liquid, the dressing can continue to function if the amount of liquid that can evaporate per unit of time is greater than or equal to the amount of liquid that is released from the wound bed.
- the various layers can have different surface areas, e.g. the upper layers can have a smaller surface area than the lower ones.
- the layers in the wound pad can have a different shape than or the same shape as the vapour-permeable polymer film, e.g. rectangular or square with round corners, round, oval, etc. If the various layers in the wound dressing contain weldable constituents, they can be brought into tight contact with one another by welding with the aid of heat and pressure or with the aid of ultrasound.
- the vapour-permeable layer can be composed of a laminate of polymer film and nonwoven, preferably a hydrophobic nonwoven. The scope of the invention is therefore limited only by the content of the attached claims.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Dermatology (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010260549A AU2010260549B2 (en) | 2009-06-15 | 2010-05-11 | Wound dressing with high liquid handling capacity |
EP10789811.6A EP2442772A4 (en) | 2009-06-15 | 2010-05-11 | Wound dressing with high liquid handling capacity |
US13/378,490 US8513481B2 (en) | 2009-06-15 | 2010-05-11 | Wound dressing with high liquid handling capacity |
CN201080026360.9A CN102458327B (en) | 2009-06-15 | 2010-05-11 | Wound dressing with high liquid handling capacity |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0950460A SE533841C2 (en) | 2009-06-15 | 2009-06-15 | Wound dressing with high fluid handling capacity |
SE0950460-6 | 2009-06-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010147533A1 true WO2010147533A1 (en) | 2010-12-23 |
Family
ID=43356609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2010/050513 WO2010147533A1 (en) | 2009-06-15 | 2010-05-11 | Wound dressing with high liquid handling capacity |
Country Status (6)
Country | Link |
---|---|
US (1) | US8513481B2 (en) |
EP (1) | EP2442772A4 (en) |
CN (1) | CN102458327B (en) |
AU (1) | AU2010260549B2 (en) |
SE (1) | SE533841C2 (en) |
WO (1) | WO2010147533A1 (en) |
Cited By (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012140378A1 (en) * | 2011-04-15 | 2012-10-18 | Laboratoires Urgo | Very absorbent, thin adhesive dressing, and uses thereof for the treatment of chronic wounds |
WO2012140377A1 (en) | 2011-04-15 | 2012-10-18 | Laboratoires Urgo | Hydrocellular absorbent dressing, and uses thereof for the treatment of chronic and acute wounds |
USD679819S1 (en) | 2010-10-15 | 2013-04-09 | Smith & Nephew Plc | Medical dressing |
USD679820S1 (en) | 2010-10-15 | 2013-04-09 | Smith & Nephew Plc | Medical dressing |
WO2013082885A1 (en) * | 2011-12-07 | 2013-06-13 | Tang Yina | Body surface skin object fixing and surface-skin-movement-incurred wrinkle limiting device |
USD691730S1 (en) | 2012-05-15 | 2013-10-15 | Smith & Nephew Plc | Medical dressing |
US8834451B2 (en) | 2002-10-28 | 2014-09-16 | Smith & Nephew Plc | In-situ wound cleansing apparatus |
US9050398B2 (en) | 2010-12-22 | 2015-06-09 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9061095B2 (en) | 2010-04-27 | 2015-06-23 | Smith & Nephew Plc | Wound dressing and method of use |
WO2015092670A1 (en) | 2013-12-19 | 2015-06-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Article for absorbing a physiological liquid, such as a dressing |
WO2015092629A1 (en) | 2013-12-19 | 2015-06-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Article to be applied against the skin, mucous membranes or a wound |
US9168330B2 (en) | 2006-05-11 | 2015-10-27 | Kalypto Medical, Inc. | Device and method for wound therapy |
US9198801B2 (en) | 2004-04-05 | 2015-12-01 | Bluesky Medical Group, Inc. | Flexible reduced pressure treatment appliance |
US9220823B2 (en) | 2010-09-20 | 2015-12-29 | Smith & Nephew Plc | Pressure control apparatus |
US9327065B2 (en) | 2009-12-22 | 2016-05-03 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
EP3023083A1 (en) | 2014-11-20 | 2016-05-25 | Mölnlycke Health Care AB | Wound dressings |
US9375353B2 (en) | 2008-03-13 | 2016-06-28 | Smith & Nephew, Inc. | Shear resistant wound dressing for use in vacuum wound therapy |
US9452248B2 (en) | 2003-10-28 | 2016-09-27 | Smith & Nephew Plc | Wound cleansing apparatus in-situ |
US9474654B2 (en) | 2008-08-08 | 2016-10-25 | Smith & Nephew, Inc. | Wound dressing of continuous fibers |
US9801985B2 (en) | 2007-12-06 | 2017-10-31 | Smith & Nephew Plc | Apparatus for topical negative pressure therapy |
USD804014S1 (en) | 2010-12-22 | 2017-11-28 | Smith & Nephew, Inc. | Suction adapter |
USD806243S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
US9889241B2 (en) | 2009-06-01 | 2018-02-13 | Smith & Nephew, Inc. | System for providing continual drainage in negative pressure wound therapy |
US9956329B2 (en) | 2008-03-07 | 2018-05-01 | Smith & Nephew, Inc. | Wound dressing port and associated wound dressing |
US9987402B2 (en) | 2007-12-06 | 2018-06-05 | Smith & Nephew Plc | Apparatus and method for wound volume measurement |
US10010658B2 (en) | 2013-05-10 | 2018-07-03 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
US10046096B2 (en) | 2012-03-12 | 2018-08-14 | Smith & Nephew Plc | Reduced pressure apparatus and methods |
US10058642B2 (en) | 2004-04-05 | 2018-08-28 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
US10076594B2 (en) | 2015-05-18 | 2018-09-18 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
US10080689B2 (en) | 2007-12-06 | 2018-09-25 | Smith & Nephew Plc | Wound filling apparatuses and methods |
US10143784B2 (en) | 2007-11-21 | 2018-12-04 | T.J. Smith & Nephew Limited | Suction device and dressing |
US10231878B2 (en) | 2011-05-17 | 2019-03-19 | Smith & Nephew Plc | Tissue healing |
US10406036B2 (en) | 2009-06-18 | 2019-09-10 | Smith & Nephew, Inc. | Apparatus for vacuum bridging and/or exudate collection |
US10537657B2 (en) | 2010-11-25 | 2020-01-21 | Smith & Nephew Plc | Composition I-II and products and uses thereof |
EP3669843A1 (en) * | 2018-12-21 | 2020-06-24 | Paul Hartmann S.A. | Superabsorbent wound dressing with silicone wound contact layer |
USRE48117E1 (en) | 2010-05-07 | 2020-07-28 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
EP3349807B1 (en) | 2015-09-17 | 2021-02-24 | 3M Innovative Properties Company | Hybrid silicone and acrylic adhesive cover for use with wound treatment |
GB2586813A (en) * | 2019-09-03 | 2021-03-10 | Marks Spencer Plc | An absorbent composite |
EP3434236B1 (en) | 2013-03-14 | 2021-12-29 | 3M Innovative Properties Company | Absorbent dressing with hybrid drape |
US11253399B2 (en) | 2007-12-06 | 2022-02-22 | Smith & Nephew Plc | Wound filling apparatuses and methods |
US11638666B2 (en) | 2011-11-25 | 2023-05-02 | Smith & Nephew Plc | Composition, apparatus, kit and method and uses thereof |
US11931226B2 (en) | 2013-03-15 | 2024-03-19 | Smith & Nephew Plc | Wound dressing sealant and use thereof |
US11938231B2 (en) | 2010-11-25 | 2024-03-26 | Smith & Nephew Plc | Compositions I-I and products and uses thereof |
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007030601A2 (en) | 2005-09-06 | 2007-03-15 | Tyco Healthcare Group Lp | Self contained wound dressing with micropump |
GB0722820D0 (en) | 2007-11-21 | 2008-01-02 | Smith & Nephew | Vacuum assisted wound dressing |
CN101883546B (en) | 2007-11-21 | 2017-05-10 | 史密夫及内修公开有限公司 | Wound dressing |
EP3254650B1 (en) | 2007-11-21 | 2020-01-08 | Smith & Nephew plc | Wound dressing |
JP5118212B2 (en) | 2008-03-05 | 2013-01-16 | ケーシーアイ ライセンシング インコーポレイテッド | Method for applying pressure to a dressing and a tissue site to collect and contain liquid from the tissue site |
US9414968B2 (en) | 2008-09-05 | 2016-08-16 | Smith & Nephew, Inc. | Three-dimensional porous film contact layer with improved wound healing |
GB0902368D0 (en) | 2009-02-13 | 2009-04-01 | Smith & Nephew | Wound packing |
US8791315B2 (en) | 2010-02-26 | 2014-07-29 | Smith & Nephew, Inc. | Systems and methods for using negative pressure wound therapy to manage open abdominal wounds |
US8814842B2 (en) | 2010-03-16 | 2014-08-26 | Kci Licensing, Inc. | Delivery-and-fluid-storage bridges for use with reduced-pressure systems |
AU2012282287B2 (en) | 2011-07-14 | 2017-06-01 | Smith & Nephew Plc | Wound dressing and method of treatment |
DK2572737T3 (en) * | 2011-09-26 | 2016-06-27 | Bsn Medical Gmbh | improved wound dressing |
US9084845B2 (en) | 2011-11-02 | 2015-07-21 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
CN103987348B (en) | 2011-12-16 | 2016-05-11 | 凯希特许有限公司 | Releasable medical cloth list |
US10940047B2 (en) | 2011-12-16 | 2021-03-09 | Kci Licensing, Inc. | Sealing systems and methods employing a hybrid switchable drape |
CA2867969C (en) | 2012-03-20 | 2020-03-24 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US9427505B2 (en) | 2012-05-15 | 2016-08-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
JP6307505B2 (en) | 2012-08-01 | 2018-04-04 | スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company | Wound dressing and treatment method |
EP2879636B1 (en) | 2012-08-01 | 2017-03-22 | Smith & Nephew PLC | Wound dressing |
EP2711033A1 (en) * | 2012-09-25 | 2014-03-26 | Paul Hartmann AG | System for wound treatment |
WO2014075684A1 (en) * | 2012-11-15 | 2014-05-22 | Coloplast A/S | A wound dressing |
CN111991092A (en) | 2012-11-16 | 2020-11-27 | 凯希特许有限公司 | Medical drape having patterned adhesive layer and method of making same |
DE102013100157A1 (en) | 2013-01-09 | 2014-07-10 | Birgit Riesinger | Liquid-permeable primary dressing with a silicone coating |
GB201317746D0 (en) | 2013-10-08 | 2013-11-20 | Smith & Nephew | PH indicator |
USD757950S1 (en) * | 2013-01-30 | 2016-05-31 | Mölnlycke Health Care Ab | Wound pad |
US10695226B2 (en) | 2013-03-15 | 2020-06-30 | Smith & Nephew Plc | Wound dressing and method of treatment |
AU2014229777B2 (en) | 2013-03-15 | 2018-03-08 | Smith & Nephew Plc | Wound dressing and method of treatment |
WO2015065742A1 (en) | 2013-10-28 | 2015-05-07 | Kci Licensing, Inc. | Hybrid sealing tape |
WO2015065615A1 (en) | 2013-10-30 | 2015-05-07 | Kci Licensing, Inc. | Absorbent conduit and system |
WO2015065616A1 (en) | 2013-10-30 | 2015-05-07 | Kci Licensing, Inc. | Dressing with sealing and retention intereface |
EP3062751B1 (en) | 2013-10-30 | 2017-08-09 | KCI Licensing, Inc. | Condensate absorbing and dissipating system |
CA2926932C (en) | 2013-10-30 | 2021-10-05 | Kci Licensing, Inc. | Dressing with differentially sized perforations |
FR3015229B1 (en) * | 2013-12-19 | 2021-01-22 | Commissariat Energie Atomique | ARTICLE FOR ABSORBING A PHYSIOLOGICAL LIQUID, IN PARTICULAR DRESSING |
CA2940730C (en) | 2014-02-28 | 2022-07-26 | Kci Licensing, Inc. | Hybrid drape having a gel-coated perforated mesh |
US11026844B2 (en) | 2014-03-03 | 2021-06-08 | Kci Licensing, Inc. | Low profile flexible pressure transmission conduit |
EP3281616B1 (en) * | 2014-06-05 | 2020-01-01 | KCI Licensing, Inc. | Dressing with fluid acquisition and distribution characteristics |
CA2952284C (en) | 2014-06-18 | 2023-03-28 | Smith & Nephew Plc | Wound dressing |
US10456497B2 (en) | 2014-09-10 | 2019-10-29 | C. R. Bard, Inc. | Protective dressing for skin-placed medical device |
EP3237031A1 (en) | 2014-12-22 | 2017-11-01 | Smith & Nephew PLC | Negative pressure wound therapy apparatus and methods |
JP6744315B2 (en) | 2014-12-30 | 2020-08-19 | スリーエム イノベイティブ プロパティズ カンパニー | Wound dressing having multiple adhesive layers |
GB2537840B (en) * | 2015-04-27 | 2021-04-21 | Medtrade Products Ltd | Wound dressing |
EP3294245B1 (en) | 2015-05-08 | 2019-09-04 | KCI Licensing, Inc. | Low acuity dressing with integral pump |
WO2017040045A1 (en) | 2015-09-01 | 2017-03-09 | Kci Licensing, Inc. | Dressing with increased apposition force |
CN105193549A (en) * | 2015-09-29 | 2015-12-30 | 绍兴振德医用敷料有限公司 | Intelligent adjusting type medical dressing and processing equipment thereof |
CN105232228A (en) * | 2015-09-29 | 2016-01-13 | 绍兴振德医用敷料有限公司 | Intelligent adjustable medical dressing and preparation method thereof |
CN105193548A (en) * | 2015-09-29 | 2015-12-30 | 绍兴振德医用敷料有限公司 | Intelligent adjusting type medical dressing |
CA3009878A1 (en) | 2015-12-30 | 2017-07-06 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
US11090196B2 (en) | 2015-12-30 | 2021-08-17 | Smith & Nephew Plc | Absorbent negative pressure wound therapy dressing |
JP1586116S (en) | 2016-02-29 | 2017-09-19 | ||
USD796735S1 (en) | 2016-02-29 | 2017-09-05 | Smith & Nephew Plc | Mount apparatus for portable negative pressure apparatus |
US11771820B2 (en) | 2016-03-04 | 2023-10-03 | Smith & Nephew Plc | Negative pressure wound therapy apparatus for post breast surgery wounds |
GB2555584B (en) | 2016-10-28 | 2020-05-27 | Smith & Nephew | Multi-layered wound dressing and method of manufacture |
WO2018108784A1 (en) | 2016-12-12 | 2018-06-21 | Smith & Nephew Plc | Wound dressing |
JP7069219B2 (en) * | 2017-05-10 | 2022-05-17 | メンリッケ・ヘルス・ケア・アーベー | Composite form in wound healing |
EP3634330A1 (en) | 2017-06-07 | 2020-04-15 | KCI Licensing, Inc. | Composite dressings for improved granulation reduced maceration with negative-pressure treatment |
CN110944688A (en) | 2017-06-07 | 2020-03-31 | 凯希特许有限公司 | Tissue contact interface |
KR20200016932A (en) * | 2017-06-07 | 2020-02-17 | 케이씨아이 라이센싱 인코포레이티드 | Dressing material which we can remove and attach for sound pressure therapy |
CN110691574A (en) * | 2017-06-07 | 2020-01-14 | 凯希特许有限公司 | Peel-off and placement dressing for thick exudates and instillations |
AU2018285235B2 (en) | 2017-06-14 | 2023-11-02 | T.J.Smith & Nephew, Limited | Negative pressure wound therapy apparatus |
CA3066082A1 (en) | 2017-06-30 | 2019-01-03 | T. J. Smith & Nephew,Limited | Negative pressure wound therapy apparatus |
GB201718014D0 (en) | 2017-11-01 | 2017-12-13 | Smith & Nephew | Dressing for negative pressure wound therapy with filter |
BR112020019412A2 (en) * | 2018-03-22 | 2021-03-23 | Dsg Technology Holdings Ltd. | disposable and composite absorbent article or construction of absorbent core for incorporation with it, components for the same or the same, and systems, apparatus and methods of preparing the same |
US11774159B2 (en) * | 2018-06-28 | 2023-10-03 | Jason Fladoos | Flexible adhesive tape for cooling beverages, pipes and other articles |
GB201811449D0 (en) | 2018-07-12 | 2018-08-29 | Smith & Nephew | Apparatuses and methods for negative pressure wound therapy |
CN110269749B (en) * | 2019-05-22 | 2020-08-14 | 东华大学 | Directional drainage dressing for maintaining proper moisture of wound and preparation method thereof |
GB201914706D0 (en) | 2019-10-11 | 2019-11-27 | Smith & Nephew | Apparatuses and methods for negative pressure wound therapy with switcheable fluid management |
GB202000574D0 (en) | 2020-01-15 | 2020-02-26 | Smith & Nephew | Fluidic connectors for negative pressure wound therapy |
GB202001212D0 (en) | 2020-01-29 | 2020-03-11 | Smith & Nephew | Systems and methods for measuring and tracking wound volume |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5167613A (en) * | 1992-03-23 | 1992-12-01 | The Kendall Company | Composite vented wound dressing |
WO2000051650A1 (en) * | 1999-03-01 | 2000-09-08 | Mölnlycke Health Care Ab | Wound dressing |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7703897U1 (en) | 1977-02-10 | 1977-06-16 | Fa. Carl Freudenberg, 6940 Weinheim | WOUND COMPRESS |
US4499896A (en) * | 1982-03-30 | 1985-02-19 | Minnesota Mining And Manufacturing Co. | Reservoir wound dressing |
US4605402A (en) | 1984-08-17 | 1986-08-12 | Personal Products Company | Softening of a composite absorbent product |
FR2618337B1 (en) | 1987-07-22 | 1989-12-15 | Dow Corning Sa | SURGICAL DRESSING AND PROCESS FOR MAKING SAME |
US5593395A (en) * | 1987-08-07 | 1997-01-14 | Martz; Joel D. | Vapor permeable dressing |
DE59003695D1 (en) * | 1989-12-15 | 1994-01-13 | Schott Glaswerke | Process for the production of large surface decorations on glass, glass ceramic or ceramics and decorated glass ceramic plates. |
SE500973C2 (en) * | 1992-03-30 | 1994-10-10 | Moelnlycke Ab | Absorbent wound dressing |
SE9601853L (en) | 1996-05-14 | 1997-06-09 | Moelnlycke Ab | Wound dressing and manufacturing process therefore |
US6096942A (en) * | 1998-04-24 | 2000-08-01 | Pabban Development Inc. | Surgical dressing, and process for manufacturing same |
US7619130B2 (en) * | 2000-07-18 | 2009-11-17 | Coloplast A/S | Multi-layer wound dressing formed as a single unit |
JP4932498B2 (en) * | 2004-02-13 | 2012-05-16 | コンバテック・テクノロジーズ・インコーポレイテッド | Wound multilayer dressing |
ITMO20050343A1 (en) * | 2005-12-23 | 2007-06-24 | Lorenz Biotech Spa | SUPPORT FOR MEDICATION |
GB0606661D0 (en) * | 2006-04-03 | 2006-05-10 | Brightwake Ltd | Improvements relating to dressings |
EP2073771B1 (en) * | 2006-10-13 | 2010-03-17 | Coloplast A/S | A wound dressing |
ES2361025T3 (en) | 2006-11-07 | 2011-06-13 | Paul Hartmann Ag | ABSORBENT BOTTOM OF MULTIPLE LAYERS WITH A HYDROPHYLE LAYER OF CONTACT WITH THE WOUND. |
-
2009
- 2009-06-15 SE SE0950460A patent/SE533841C2/en unknown
-
2010
- 2010-05-11 WO PCT/SE2010/050513 patent/WO2010147533A1/en active Application Filing
- 2010-05-11 AU AU2010260549A patent/AU2010260549B2/en not_active Ceased
- 2010-05-11 US US13/378,490 patent/US8513481B2/en active Active
- 2010-05-11 EP EP10789811.6A patent/EP2442772A4/en not_active Withdrawn
- 2010-05-11 CN CN201080026360.9A patent/CN102458327B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5167613A (en) * | 1992-03-23 | 1992-12-01 | The Kendall Company | Composite vented wound dressing |
WO2000051650A1 (en) * | 1999-03-01 | 2000-09-08 | Mölnlycke Health Care Ab | Wound dressing |
Non-Patent Citations (1)
Title |
---|
See also references of EP2442772A4 * |
Cited By (126)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10278869B2 (en) | 2002-10-28 | 2019-05-07 | Smith & Nephew Plc | Apparatus for aspirating, irrigating and cleansing wounds |
US9844473B2 (en) | 2002-10-28 | 2017-12-19 | Smith & Nephew Plc | Apparatus for aspirating, irrigating and cleansing wounds |
US10842678B2 (en) | 2002-10-28 | 2020-11-24 | Smith & Nephew Plc | Apparatus for aspirating, irrigating and cleansing wounds |
US9205001B2 (en) | 2002-10-28 | 2015-12-08 | Smith & Nephew Plc | Apparatus for aspirating, irrigating and cleansing wounds |
US9844474B2 (en) | 2002-10-28 | 2017-12-19 | Smith & Nephew Plc | Apparatus for aspirating, irrigating and cleansing wounds |
US8834451B2 (en) | 2002-10-28 | 2014-09-16 | Smith & Nephew Plc | In-situ wound cleansing apparatus |
US9452248B2 (en) | 2003-10-28 | 2016-09-27 | Smith & Nephew Plc | Wound cleansing apparatus in-situ |
US9198801B2 (en) | 2004-04-05 | 2015-12-01 | Bluesky Medical Group, Inc. | Flexible reduced pressure treatment appliance |
US10363346B2 (en) | 2004-04-05 | 2019-07-30 | Smith & Nephew, Inc. | Flexible reduced pressure treatment appliance |
US11730874B2 (en) | 2004-04-05 | 2023-08-22 | Smith & Nephew, Inc. | Reduced pressure treatment appliance |
US10058642B2 (en) | 2004-04-05 | 2018-08-28 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
US10842919B2 (en) | 2004-04-05 | 2020-11-24 | Smith & Nephew, Inc. | Reduced pressure treatment system |
US10350339B2 (en) | 2004-04-05 | 2019-07-16 | Smith & Nephew, Inc. | Flexible reduced pressure treatment appliance |
US10105471B2 (en) | 2004-04-05 | 2018-10-23 | Smith & Nephew, Inc. | Reduced pressure treatment system |
US11813394B2 (en) | 2006-05-11 | 2023-11-14 | Smith & Nephew, Inc. | Device and method for wound therapy |
US9669138B2 (en) | 2006-05-11 | 2017-06-06 | Kalypto Medical, Inc. | Device and method for wound therapy |
US11517656B2 (en) | 2006-05-11 | 2022-12-06 | Smith & Nephew, Inc. | Device and method for wound therapy |
US9168330B2 (en) | 2006-05-11 | 2015-10-27 | Kalypto Medical, Inc. | Device and method for wound therapy |
US10391212B2 (en) | 2006-05-11 | 2019-08-27 | Smith & Nephew, Inc. | Device and method for wound therapy |
US10744242B2 (en) | 2006-05-11 | 2020-08-18 | Smith & Nephew, Inc. | Device and method for wound therapy |
US9795725B2 (en) | 2006-05-11 | 2017-10-24 | Kalypto Medical, Inc. | Device and method for wound therapy |
US11344663B2 (en) | 2007-11-21 | 2022-05-31 | T.J.Smith And Nephew, Limited | Suction device and dressing |
US10143784B2 (en) | 2007-11-21 | 2018-12-04 | T.J. Smith & Nephew Limited | Suction device and dressing |
US11766512B2 (en) | 2007-11-21 | 2023-09-26 | T.J.Smith And Nephew, Limited | Suction device and dressing |
US10561769B2 (en) | 2007-12-06 | 2020-02-18 | Smith & Nephew Plc | Apparatus for topical negative pressure therapy |
US11253399B2 (en) | 2007-12-06 | 2022-02-22 | Smith & Nephew Plc | Wound filling apparatuses and methods |
US10080689B2 (en) | 2007-12-06 | 2018-09-25 | Smith & Nephew Plc | Wound filling apparatuses and methods |
US9987402B2 (en) | 2007-12-06 | 2018-06-05 | Smith & Nephew Plc | Apparatus and method for wound volume measurement |
US9801985B2 (en) | 2007-12-06 | 2017-10-31 | Smith & Nephew Plc | Apparatus for topical negative pressure therapy |
US12029549B2 (en) | 2007-12-06 | 2024-07-09 | Smith & Nephew Plc | Apparatus and method for wound volume measurement |
US9956329B2 (en) | 2008-03-07 | 2018-05-01 | Smith & Nephew, Inc. | Wound dressing port and associated wound dressing |
US10188555B2 (en) | 2008-03-13 | 2019-01-29 | Smith & Nephew, Inc. | Shear resistant wound dressing for use in vacuum wound therapy |
US11523943B2 (en) | 2008-03-13 | 2022-12-13 | Smith & Nephew, Inc. | Shear resistant wound dressing for use in vacuum wound therapy |
US9375353B2 (en) | 2008-03-13 | 2016-06-28 | Smith & Nephew, Inc. | Shear resistant wound dressing for use in vacuum wound therapy |
US9474654B2 (en) | 2008-08-08 | 2016-10-25 | Smith & Nephew, Inc. | Wound dressing of continuous fibers |
US11992601B2 (en) | 2009-06-01 | 2024-05-28 | Smith & Nephew, Inc. | System for providing continual drainage in negative pressure wound therapy |
US10828404B2 (en) | 2009-06-01 | 2020-11-10 | Smith & Nephew, Inc. | System for providing continual drainage in negative pressure wound therapy |
US9889241B2 (en) | 2009-06-01 | 2018-02-13 | Smith & Nephew, Inc. | System for providing continual drainage in negative pressure wound therapy |
US10406036B2 (en) | 2009-06-18 | 2019-09-10 | Smith & Nephew, Inc. | Apparatus for vacuum bridging and/or exudate collection |
US9327065B2 (en) | 2009-12-22 | 2016-05-03 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US11058588B2 (en) | 2009-12-22 | 2021-07-13 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US10406037B2 (en) | 2009-12-22 | 2019-09-10 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9974695B2 (en) | 2009-12-22 | 2018-05-22 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9642750B2 (en) | 2009-12-22 | 2017-05-09 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9999547B2 (en) | 2009-12-22 | 2018-06-19 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9808561B2 (en) | 2010-04-27 | 2017-11-07 | Smith & Nephew Plc | Wound dressing and method of use |
US11090195B2 (en) | 2010-04-27 | 2021-08-17 | Smith & Nephew Plc | Wound dressing and method of use |
US10159604B2 (en) | 2010-04-27 | 2018-12-25 | Smith & Nephew Plc | Wound dressing and method of use |
US9061095B2 (en) | 2010-04-27 | 2015-06-23 | Smith & Nephew Plc | Wound dressing and method of use |
US11058587B2 (en) | 2010-04-27 | 2021-07-13 | Smith & Nephew Plc | Wound dressing and method of use |
USRE48117E1 (en) | 2010-05-07 | 2020-07-28 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US11623039B2 (en) | 2010-09-20 | 2023-04-11 | Smith & Nephew Plc | Systems and methods for controlling operation of a reduced pressure therapy system |
US9220823B2 (en) | 2010-09-20 | 2015-12-29 | Smith & Nephew Plc | Pressure control apparatus |
US10307517B2 (en) | 2010-09-20 | 2019-06-04 | Smith & Nephew Plc | Systems and methods for controlling operation of a reduced pressure therapy system |
US11534540B2 (en) | 2010-09-20 | 2022-12-27 | Smith & Nephew Plc | Pressure control apparatus |
US10058644B2 (en) | 2010-09-20 | 2018-08-28 | Smith & Nephew Plc | Pressure control apparatus |
US11027051B2 (en) | 2010-09-20 | 2021-06-08 | Smith & Nephew Plc | Pressure control apparatus |
US10105473B2 (en) | 2010-09-20 | 2018-10-23 | Smith & Nephew Plc | Pressure control apparatus |
USRE49227E1 (en) | 2010-10-15 | 2022-10-04 | Smith & Nephew Plc | Medical dressing |
USRE45864E1 (en) | 2010-10-15 | 2016-01-26 | Smith & Nephew Plc | Medical dressing |
USD679819S1 (en) | 2010-10-15 | 2013-04-09 | Smith & Nephew Plc | Medical dressing |
USRE46289E1 (en) | 2010-10-15 | 2017-01-31 | Smith & Nephew Plc | Medical dressing |
USRE46778E1 (en) | 2010-10-15 | 2018-04-10 | Smith & Nephew Plc | Medical dressing |
USRE47645E1 (en) | 2010-10-15 | 2019-10-15 | Smith & Nephew Plc | Medical dressing |
USD679820S1 (en) | 2010-10-15 | 2013-04-09 | Smith & Nephew Plc | Medical dressing |
USRE47644E1 (en) | 2010-10-15 | 2019-10-15 | Smith & Nephew Plc | Medical dressing |
USRE48282E1 (en) | 2010-10-15 | 2020-10-27 | Smith & Nephew Plc | Medical dressing |
US11730876B2 (en) | 2010-11-25 | 2023-08-22 | Smith & Nephew Plc | Composition I-II and products and uses thereof |
US10537657B2 (en) | 2010-11-25 | 2020-01-21 | Smith & Nephew Plc | Composition I-II and products and uses thereof |
US11938231B2 (en) | 2010-11-25 | 2024-03-26 | Smith & Nephew Plc | Compositions I-I and products and uses thereof |
US9050398B2 (en) | 2010-12-22 | 2015-06-09 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US9956389B2 (en) | 2010-12-22 | 2018-05-01 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
USD804014S1 (en) | 2010-12-22 | 2017-11-28 | Smith & Nephew, Inc. | Suction adapter |
US11247034B2 (en) | 2010-12-22 | 2022-02-15 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
KR101925655B1 (en) | 2011-04-15 | 2018-12-05 | 라보라뚜와르 어르고 | Hydrocellular absorbent dressing, and uses thereof for the treatment of chronic and acute wounds |
FR2974005A1 (en) * | 2011-04-15 | 2012-10-19 | Urgo Lab | THIN ABSORBENT THIN ADHESIVE DRESSING, ITS USES FOR THE TREATMENT OF CHRONIC WOUNDS |
CN103596529A (en) * | 2011-04-15 | 2014-02-19 | 于尔戈实验室 | Very absorbent, thin adhesive dressing, and uses thereof for the treatment of chronic wounds |
RU2586313C2 (en) * | 2011-04-15 | 2016-06-10 | Лаборатуар Урго | Absorbent hydrocellulose dressing, use thereof in treating chronic and acute lesions |
JP2014514078A (en) * | 2011-04-15 | 2014-06-19 | ラボラトワール ユルゴ | Hydrocellular absorbent dressing and its use for the treatment of chronic and acute wounds |
WO2012140378A1 (en) * | 2011-04-15 | 2012-10-18 | Laboratoires Urgo | Very absorbent, thin adhesive dressing, and uses thereof for the treatment of chronic wounds |
US9452086B2 (en) | 2011-04-15 | 2016-09-27 | Laboratoires Urgo | Hydrocellular absorbent dressing, and uses thereof for the treatment of chronic and acute wounds |
KR20140107106A (en) * | 2011-04-15 | 2014-09-04 | 라보라뚜와르 어르고 | Hydrocellular absorbent dressing, and uses thereof for the treatment of chronic and acute wounds |
WO2012140377A1 (en) | 2011-04-15 | 2012-10-18 | Laboratoires Urgo | Hydrocellular absorbent dressing, and uses thereof for the treatment of chronic and acute wounds |
FR2974004A1 (en) * | 2011-04-15 | 2012-10-19 | Urgo Lab | HYDROCELLULAR ABSORBENT DRESSING, ITS USES FOR THE TREATMENT OF CHRONIC AND ACUTE WOUNDS |
KR20140107105A (en) * | 2011-04-15 | 2014-09-04 | 라보라뚜와르 어르고 | Very absorbent, thin adhesive dressing, and uses thereof for the treatment of chronic wounds |
KR101888377B1 (en) | 2011-04-15 | 2018-08-14 | 라보라뚜와르 어르고 | Very absorbent, thin adhesive dressing, and uses thereof for the treatment of chronic wounds |
US9597234B2 (en) | 2011-04-15 | 2017-03-21 | Urgo Recherche Innovation Et Development | Very absorbent, thin adhesive dressing, and uses thereof for the treatment of chronic wounds |
US11246757B2 (en) | 2011-05-17 | 2022-02-15 | Smith & Nephew Plc | Tissue healing |
US10231878B2 (en) | 2011-05-17 | 2019-03-19 | Smith & Nephew Plc | Tissue healing |
US11638666B2 (en) | 2011-11-25 | 2023-05-02 | Smith & Nephew Plc | Composition, apparatus, kit and method and uses thereof |
WO2013082885A1 (en) * | 2011-12-07 | 2013-06-13 | Tang Yina | Body surface skin object fixing and surface-skin-movement-incurred wrinkle limiting device |
US11903798B2 (en) | 2012-03-12 | 2024-02-20 | Smith & Nephew Plc | Reduced pressure apparatus and methods |
US10660994B2 (en) | 2012-03-12 | 2020-05-26 | Smith & Nephew Plc | Reduced pressure apparatus and methods |
US10046096B2 (en) | 2012-03-12 | 2018-08-14 | Smith & Nephew Plc | Reduced pressure apparatus and methods |
US11129931B2 (en) | 2012-03-12 | 2021-09-28 | Smith & Nephew Plc | Reduced pressure apparatus and methods |
USRE47100E1 (en) | 2012-05-15 | 2018-10-30 | Smith & Nephew Plc | Medical dressing |
USD691730S1 (en) | 2012-05-15 | 2013-10-15 | Smith & Nephew Plc | Medical dressing |
USD806243S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
USD806256S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Medical dressing |
USD806242S1 (en) | 2012-05-23 | 2017-12-26 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
USD820990S1 (en) | 2012-05-23 | 2018-06-19 | Smith & Nephew Plc | Medical dressing |
US9907703B2 (en) | 2012-05-23 | 2018-03-06 | Smith & Nephew Plc | Apparatuses and methods for negative pressure wound therapy |
US10507141B2 (en) | 2012-05-23 | 2019-12-17 | Smith & Nephew Plc | Apparatuses and methods for negative pressure wound therapy |
USD866756S1 (en) | 2012-05-23 | 2019-11-12 | Smith & Nephew Plc | Flexible port used to connect a wound dressing to a source of negative pressure |
US11590029B2 (en) | 2012-05-23 | 2023-02-28 | Smith & Nephew Plc | Apparatuses and methods for negative pressure wound therapy |
EP3434236B1 (en) | 2013-03-14 | 2021-12-29 | 3M Innovative Properties Company | Absorbent dressing with hybrid drape |
US11931226B2 (en) | 2013-03-15 | 2024-03-19 | Smith & Nephew Plc | Wound dressing sealant and use thereof |
US10010658B2 (en) | 2013-05-10 | 2018-07-03 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
US11439741B2 (en) | 2013-05-10 | 2022-09-13 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
US10292869B2 (en) | 2013-12-19 | 2019-05-21 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Article for absorbing a physiological liquid, such as a dressing |
WO2015092629A1 (en) | 2013-12-19 | 2015-06-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Article to be applied against the skin, mucous membranes or a wound |
WO2015092670A1 (en) | 2013-12-19 | 2015-06-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Article for absorbing a physiological liquid, such as a dressing |
WO2016079037A1 (en) | 2014-11-20 | 2016-05-26 | Mölnlycke Health Care Ab | Wound dressings |
EP3023083A1 (en) | 2014-11-20 | 2016-05-25 | Mölnlycke Health Care AB | Wound dressings |
US10772999B2 (en) | 2014-11-20 | 2020-09-15 | Mölnlycke Health Care Ab | Wound dressings |
US12042361B2 (en) | 2015-05-18 | 2024-07-23 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
US11154649B2 (en) | 2015-05-18 | 2021-10-26 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
US10076594B2 (en) | 2015-05-18 | 2018-09-18 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
EP3349807B1 (en) | 2015-09-17 | 2021-02-24 | 3M Innovative Properties Company | Hybrid silicone and acrylic adhesive cover for use with wound treatment |
CN113242726A (en) * | 2018-12-21 | 2021-08-10 | 保罗·哈特曼股份公司 | Super absorbent wound dressing with silicone wound contact layer |
WO2020126900A1 (en) * | 2018-12-21 | 2020-06-25 | Paul Hartmann S.A. | Superabsorbent wound dressing with silicone wound contact layer |
EP3669843A1 (en) * | 2018-12-21 | 2020-06-24 | Paul Hartmann S.A. | Superabsorbent wound dressing with silicone wound contact layer |
GB2588289B (en) * | 2019-09-03 | 2022-02-23 | Marks Spencer Plc | An absorbent composite |
GB2586813A (en) * | 2019-09-03 | 2021-03-10 | Marks Spencer Plc | An absorbent composite |
GB2588289A (en) * | 2019-09-03 | 2021-04-21 | Marks Spencer Plc | An absorbent composite |
GB2586813B (en) * | 2019-09-03 | 2022-02-02 | Marks Spencer Plc | An absorbent composite |
Also Published As
Publication number | Publication date |
---|---|
CN102458327A (en) | 2012-05-16 |
AU2010260549A1 (en) | 2012-01-19 |
SE0950460A1 (en) | 2010-12-16 |
US8513481B2 (en) | 2013-08-20 |
SE533841C2 (en) | 2011-02-01 |
CN102458327B (en) | 2014-07-16 |
US20120095380A1 (en) | 2012-04-19 |
AU2010260549B2 (en) | 2014-05-01 |
EP2442772A4 (en) | 2018-04-25 |
EP2442772A1 (en) | 2012-04-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2010260549B2 (en) | Wound dressing with high liquid handling capacity | |
CN108472160B (en) | Negative pressure wound therapy apparatus | |
US11648152B2 (en) | Absorbent negative pressure wound therapy dressing | |
EP2572737B1 (en) | Improved wound dressing | |
US5512041A (en) | Wound dressing for promoting moist wound healing | |
RU2573816C2 (en) | Wound dressing | |
JP5767236B2 (en) | Wound dressing material | |
US20210393443A1 (en) | Adaptable adhesive wound dressings | |
EP2558046B1 (en) | Leakage-reducing dressing | |
US20220062061A1 (en) | Negative pressure wound therapy apparatus | |
WO2008004380A1 (en) | Wound-covering material | |
CN220989035U (en) | Wound dressing and negative pressure wound treatment device | |
EP1653899B1 (en) | Absorbent sheet with leakage barriers for use in wound dressing | |
EP4108217A1 (en) | A negative pressure wound therapy (npwt) dressing | |
WO2021048754A1 (en) | Simplified negative pressure absorbent dressing | |
GB2404861A (en) | Absorbant layers for use in wound dressings |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080026360.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10789811 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010789811 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010260549 Country of ref document: AU |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13378490 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2010260549 Country of ref document: AU Date of ref document: 20100511 Kind code of ref document: A |