GB2435422A - Slow release agent absorbent dressing - Google Patents

Slow release agent absorbent dressing Download PDF

Info

Publication number
GB2435422A
GB2435422A GB0603481A GB0603481A GB2435422A GB 2435422 A GB2435422 A GB 2435422A GB 0603481 A GB0603481 A GB 0603481A GB 0603481 A GB0603481 A GB 0603481A GB 2435422 A GB2435422 A GB 2435422A
Authority
GB
United Kingdom
Prior art keywords
layer
gt
lt
wound
absorbent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0603481A
Other versions
GB0603481D0 (en
Inventor
Chou Chang-Tsung
Shih Chia-Ju
Original Assignee
Chou Chang-Tsung
Shih Chia-Ju
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chou Chang-Tsung, Shih Chia-Ju filed Critical Chou Chang-Tsung
Priority to GB0603481A priority Critical patent/GB2435422A/en
Publication of GB0603481D0 publication Critical patent/GB0603481D0/en
Publication of GB2435422A publication Critical patent/GB2435422A/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/00051Accessories for dressings
    • A61F13/00063Accessories for dressings comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/00004Non-adhesive dressings
    • A61F13/00021Non-adhesive dressings characterized by the structure of the dressing
    • A61F13/00029Non-adhesive dressings characterized by the structure of the dressing made of multiple layers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42Use of materials characterised by their function or physical properties
    • A61L15/60Liquid-swellable gel-forming materials, e.g. super-absorbents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00157Wound bandages for burns or skin transplants
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00182Wound bandages with transparent part
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00217Wound bandages not adhering to the wound
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00217Wound bandages not adhering to the wound
    • A61F2013/00229Wound bandages not adhering to the wound with alginate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00246Wound bandages in a special way pervious to air or vapours
    • A61F2013/00251Wound bandages in a special way pervious to air or vapours with macroscopic openings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00089Wound bandages
    • A61F2013/00246Wound bandages in a special way pervious to air or vapours
    • A61F2013/00255Wound bandages in a special way pervious to air or vapours with pores
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00365Plasters use
    • A61F2013/00519Plasters use for treating burn
    • A61F2013/00523Plasters use for treating burn with hydrogel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00365Plasters use
    • A61F2013/0054Plasters use for deep wounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00544Plasters form or structure
    • A61F2013/00604Multilayer
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00727Plasters means for wound humidity control
    • A61F2013/00731Plasters means for wound humidity control with absorbing pads
    • A61F2013/00744Plasters means for wound humidity control with absorbing pads containing non-woven
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00846Plasters with transparent or translucent part
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00855Plasters pervious to air or vapours
    • A61F2013/00859Plasters pervious to air or vapours with macroscopic openings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00855Plasters pervious to air or vapours
    • A61F2013/00863Plasters pervious to air or vapours with pores
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00902Plasters containing means
    • A61F2013/0091Plasters containing means with disinfecting or anaesthetics means, e.g. anti-mycrobic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F2013/00361Plasters
    • A61F2013/00902Plasters containing means
    • A61F2013/00927Plasters containing means with biological activity, e.g. enzymes for debriding wounds or others, collagen or growth factors

Abstract

A slow release agent absorbent dressing (1) comprises a wound-contacting layer (2) having tapered apertures (7). The tapered apertures (7) contact a wound to discharge exudate therefrom and transmit exudate, via a guiding layer (3), to an absorbent layer (4) formed of high-molecular polymeric fibres and mixed with a certain concentration of water-soluble agents (10), such as an antiseptic agent, enzyme and/or growth factor agent, in a suitable amount. After exudate has entered the absorbent layer (4), the polymeric fibres expand to form into a gel to prevent exudate flowing back to the wound. Also, a translucent evaporating layer (5) having numerous micropores (9) for air venting, is in contact with the absorbent layer (4) and the peripheral edges are joined together in the form of a sealed structure by heat-sealing (6), to stop side escape of exudate, which is effective in protecting the wound (11) from secondary infection.

Description

<p>SLOW RELEASE AGENT ABSORBENT DRESSING</p>

<p>DES CR1 PT ION The present invention relates to a slow release agent absorbent dressing and more particularly to a wound-contracting layer with tapered apertures wherein exudate discharges from a wound area is able to penetrate through to prevent from the backf low of exudate and avoid infecting the wound area. Also, mix a certain concentration of water-soluble antiseptic agents, enzymes and growth factor agents in a suitable amount into a dry absorbent layer of the dressing of the present invention, which is more effective in infection control, debridement and promoting healing.</p>

<p>Almost every healing process generally used in medical institution are necessarily using antimicrobial dressings to cover or bandage a wound in order to prevent from infection by external bacteria and the wound is possible to be the laceration, surgical incision, inflammation or burns. In addition, most commonly used dressings in the medical institution are still gauze or cotton wad. However, these dressings are effective in absorbing exudate while directly applied on the wound but exudate might flow backward to infect the wound or said absorbed exudate might evaporate to make gauze become harder; in that case, a healing process could be hindered by causing a secondary injury.</p>

<p>Besides, U.S, Patent No. 6, 600,085 discloses an absorbent article made from an inner core of absorbent material surrounded by a top layer and a bottom layer which are apertured films. Obviously, said absorbent article comprises only three layers, namely a top layer, a bottom layer and an absorbent core. The structure of this prior art article is different from the structure of the present invention. Also, although the prior art discloses a bottom layer using protuberances to prevent backf low of exudate, it does not contemplate a layer to disperse exudate, thereby increasing its absorbing capabilities, in that a guiding layer is provided in the present invention, which can overcome this disadvantage.</p>

<p>U.S. Patent No. 6, 333, 093 discloses a wound dressing in which an anti-microbial coating can be appied on one or more of the layers of the dressing in order to provide an anti-microbial effect to limit infection. In the present invention, however, the concept of providing water-soluble agents to flow back to the wound area and a guiding layer as a fourth layer, between other layers, to enhance and optimize the passage of exudate from the wound area to the absorbent layer, is a new skill not contemplated by</p>

<p>the prior art.</p>

<p>The main object of the present invention is to provide a slow release agent absorbent dressing; more particularly to provide a wound-contacting layer formed of a one-way porous film with tapered apertures for discharging exudate from a wound area and transmitting exudate via a guiding layer to an absorbent layer to prevent backf low and also a certain concentration or water-soluble agents mixed into a dry absorbent layer. This certain concentration is determined by the saturation capacity of the absorbent layer. After the absorbent layer absorbs discharged exudate to become in a saturated state, the certain concentration of dissolved agents will release through the porous film of the wound-contacting layer and flow back to the wound area, which achieves the effect of producing bacteria static, lysis of necrotic tissue and even promoting granulation growth.</p>

<p>In order that the invention can be more fully understood, a preferred embodiment in accordance therewith will now be described by way of example and with reference to the accompanying drawing in which: Figure 1 is an enlarged cross-sectional view of the present embodiment of the slow release agent absorbent dressing; and Figure 2 is a perspective view of the present embodiment of the slow release agent absorbent dressing.</p>

<p>Referring to Figure 1 and Figure 2, a slow release agent absorbent dressing 1 of the present invention comprises a wound- contacting layer 2, a guiding layer 3, an absorbent layer 4 and an evaporating layer 5. The placement of the above layers is one on top of another in order and the peripheral edges are joined together by heat-sealing, as at 6.</p>

<p>The slow release agent absorbent dressing 1 has various sizes in accordance with the different size of a wound.</p>

<p>The wound-contacting layer 2 comprises a porous soft-film which is covered with tapered apertures 7 and which can be a non-adherent polyethylene film or other similar material. The tapered apertures 7 can be polygonal tapered or conical shaped apertures. The larger calibre bottom areas of the tapered apertures 7 contacting a wound 11, as shown in Figure 2, produce a one-way valve, such that discharged exudate from the wound 11 is able to penetrate through the numerous tapered apertures 7.</p>

<p>Discharged exudate is transmitted via the guiding layer 3 to the absorbent layer 4 forming it into a gel to prevent backf low of exudate.</p>

<p>The absorbent layer 4 is formed of high-molecule polymeric materials, such as polyester or algin, mixed with a certain concentration of water-soluble agents which can be antiseptic agents, enzymes and/or growth factor agents in a suitable amount which has been added to a dry absorbent layer.</p>

<p>This certain concentration is determined by the saturation capacity of the absorbent layer 4 after the absorbent layer 4 absorbs discharged exudate and becomes in a saturated state. The certain concentration of dissolved agent(s) 10 will flow back to the wound area 11, which achieves the effect of infection control.</p>

<p>Therefore, as the absorbent layer 4 is mixed with antiseptic agents, the dressing 1 has the function of being bacteria static. As the absorbent layer 4 is mixed with enzymes, the dressing 1 has the function of lysis of necrotic tissue and debridment and, as the absorbent layer 4 is mixed with growth factor agents, the dressing 1 has the function of promoting granulation growth.</p>

<p>In the present embodiment, the wound-contacting layer 2 comprises a soft-film covered with tapered apertures 7. Besides having the advantage of producing a one-way valve for discharging exudate, it does not adhere to the wound 11. For this reason, the dressing 1 is removed easily without hurting newborn epidermis.</p>

<p>As shown in Figure 1 and Figure 2, the guiding layer 3, joined to the wound-contacting layer 2, can be directional fine-hole fibres or non-woven fabrics for transmitting discharged exudate to the absorbent layer 4.</p>

<p>The absorbent layer 4, attached to the guiding layer 3, is in the form of high-molecule polymeric materials, such as polyester or algin. After absorbing discharged exudate, these high-molecule polymeric fibres expand forming a gel to prevent exudate flowing back to the wound area 11.</p>

<p>The absorbent layer 4 has added to it the certain concentration of agents 10 in a suitable amount to absorb discharged exudate. These agents 10 can be antiseptic agents, enzymes and/or growth factor agents.</p>

<p>After nearing a saturated state, the certain concentration of dissolved agents 10 will flow back to the wound area 11.</p>

<p>In the present embodiment, non-woven pulp and high-molecule polymeric fibres antiseptically treated are used.</p>

<p>The evaporating layer 5 adjacent the absorbent layer 4, comprises a translucent or transparent film 12 with a broad spread of micro pores 9 to keep the wound area 11 in suitable moisture. Also people can observe the absorbing condition of the dressing 1 through the evaporating layer 5.</p>

Claims (1)

  1. <p>CLJ.IMS 1. A slow release agent absorbent dressing comprising: a
    wound-contacting layer formed of a soft-film and having tapered apertures; a guiding layer attached the wound-contacting layer and formed of directional fine-hole fibres or non-woven fabrics; an absorbent layer which is attached to the guiding layer, is formed of high-molecule polymeric materials, and is capable of absorbing exudate discharged from a wound to which the dressing is applied in use; and an evaporating layer attached to the absorbent layer and having a translucent film and micropores for venting air, to keep the wound in suitable moisture, wherein the guiding layer is arranged to disperse exudate from the wound-contacting layer to the absorbent layer is a substantially uniform manner to increase the absorbency of the absorbent layer, thereby preventing exudate captured by the absorbent layer from passing back to the wound.</p>
    <p>2. A slow release agent absorbent dressing as claimed in claim 1 further comprising a certain concentration of water-soluble agent mixed into the absorbent layer and based upon the saturation capacity of the absorbent layer.</p>
    <p>3. A slow release agent absorbent dressing as claimed in claim 2, wherein the certain concentration of water-soluble agent comprises an antiseptic agent, an enzyme and/or a growth factor agent.</p>
    <p>4. A slow release agent absorbent dressing substantially as hereinbefore described with reference to the accompanying drawing.</p>
GB0603481A 2006-02-22 2006-02-22 Slow release agent absorbent dressing Withdrawn GB2435422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0603481A GB2435422A (en) 2006-02-22 2006-02-22 Slow release agent absorbent dressing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0603481A GB2435422A (en) 2006-02-22 2006-02-22 Slow release agent absorbent dressing

Publications (2)

Publication Number Publication Date
GB0603481D0 GB0603481D0 (en) 2006-04-05
GB2435422A true GB2435422A (en) 2007-08-29

Family

ID=36178493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0603481A Withdrawn GB2435422A (en) 2006-02-22 2006-02-22 Slow release agent absorbent dressing

Country Status (1)

Country Link
GB (1) GB2435422A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBA20120029A1 (en) * 2012-05-08 2013-11-09 Chia-Chun Tien antiseptic material with a high capacity 'of essential oil absorption
US8715256B2 (en) 2007-11-21 2014-05-06 Smith & Nephew Plc Vacuum assisted wound dressing
US8829263B2 (en) 2005-09-07 2014-09-09 Smith & Nephew, Inc. Self contained wound dressing with micropump
US9061095B2 (en) 2010-04-27 2015-06-23 Smith & Nephew Plc Wound dressing and method of use
US9227000B2 (en) 2006-09-28 2016-01-05 Smith & Nephew, Inc. Portable wound therapy system
US9427505B2 (en) 2012-05-15 2016-08-30 Smith & Nephew Plc Negative pressure wound therapy apparatus
US9662246B2 (en) 2012-08-01 2017-05-30 Smith & Nephew Plc Wound dressing and method of treatment
US9801761B2 (en) 2010-07-02 2017-10-31 Smith & Nephew Plc Provision of wound filler
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
US9877872B2 (en) 2011-07-14 2018-01-30 Smith & Nephew Plc Wound dressing and method of treatment
US10046096B2 (en) 2012-03-12 2018-08-14 Smith & Nephew Plc Reduced pressure apparatus and methods
US10076449B2 (en) 2012-08-01 2018-09-18 Smith & Nephew Plc Wound dressing and method of treatment
USRE47100E1 (en) 2012-05-15 2018-10-30 Smith & Nephew Plc Medical dressing
US10278869B2 (en) 2002-10-28 2019-05-07 Smith & Nephew Plc Apparatus for aspirating, irrigating and cleansing wounds

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685214A2 (en) * 1994-06-03 1995-12-06 Uni-Charm Corporation Disposable body fluids absorbent padding
EP1275361A2 (en) * 2001-07-12 2003-01-15 Uni-Charm Corporation Absorbent article
US20060020234A1 (en) * 2004-07-21 2006-01-26 Lin-Shing Chou Absorbent sac wound dressing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685214A2 (en) * 1994-06-03 1995-12-06 Uni-Charm Corporation Disposable body fluids absorbent padding
EP1275361A2 (en) * 2001-07-12 2003-01-15 Uni-Charm Corporation Absorbent article
US20060020234A1 (en) * 2004-07-21 2006-01-26 Lin-Shing Chou Absorbent sac wound dressing

Cited By (29)

* Cited by examiner, † Cited by third party
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
US10201644B2 (en) 2005-09-07 2019-02-12 Smith & Nephew, Inc. Self contained wound dressing with micropump
US8829263B2 (en) 2005-09-07 2014-09-09 Smith & Nephew, Inc. Self contained wound dressing with micropump
US10130526B2 (en) 2006-09-28 2018-11-20 Smith & Nephew, Inc. Portable wound therapy system
US9227000B2 (en) 2006-09-28 2016-01-05 Smith & Nephew, Inc. Portable wound therapy system
US9642955B2 (en) 2006-09-28 2017-05-09 Smith & Nephew, Inc. Portable wound therapy system
US8715256B2 (en) 2007-11-21 2014-05-06 Smith & Nephew Plc Vacuum assisted wound dressing
US9962474B2 (en) 2007-11-21 2018-05-08 Smith & Nephew Plc Vacuum assisted wound dressing
US9808561B2 (en) 2010-04-27 2017-11-07 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
US9801761B2 (en) 2010-07-02 2017-10-31 Smith & Nephew Plc Provision of wound filler
US10231874B2 (en) 2010-11-08 2019-03-19 Smith & Nephew Plc Wound dressing and method of treatment
US10130519B2 (en) 2011-07-14 2018-11-20 Smith & Nephew Plc Wound dressing and method of treatment
US9877872B2 (en) 2011-07-14 2018-01-30 Smith & Nephew Plc Wound dressing and method of treatment
US10039673B2 (en) 2011-07-14 2018-08-07 Smith & Nephew Plc Wound dressing and method of treatment
US10046096B2 (en) 2012-03-12 2018-08-14 Smith & Nephew Plc Reduced pressure apparatus and methods
ITBA20120029A1 (en) * 2012-05-08 2013-11-09 Chia-Chun Tien antiseptic material with a high capacity 'of essential oil absorption
US9545465B2 (en) 2012-05-15 2017-01-17 Smith & Newphew Plc Negative pressure wound therapy apparatus
USRE47100E1 (en) 2012-05-15 2018-10-30 Smith & Nephew Plc Medical dressing
US10299964B2 (en) 2012-05-15 2019-05-28 Smith & Nephew Plc Negative pressure wound therapy apparatus
US9427505B2 (en) 2012-05-15 2016-08-30 Smith & Nephew Plc Negative pressure wound therapy apparatus
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
USD806256S1 (en) 2012-05-23 2017-12-26 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
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
US9662246B2 (en) 2012-08-01 2017-05-30 Smith & Nephew Plc Wound dressing and method of treatment
US10076449B2 (en) 2012-08-01 2018-09-18 Smith & Nephew Plc Wound dressing and method of treatment

Also Published As

Publication number Publication date
GB0603481D0 (en) 2006-04-05

Similar Documents

Publication Publication Date Title
EP1429702B1 (en) Therapeutic wound dressings with exudate-dependent enlargement of apertures
EP0147119B1 (en) Surgical dressing
EP0691113B1 (en) Wound dressings
ES2475732T3 (en) Device for wound therapy on depression
CA2646289C (en) Wound dressings with anti-microbial and zinc-containing agents
CA1187364A (en) Composite surgical dressing
AU727585B2 (en) Improved wound dressing
US7714183B2 (en) Use of honey in dressings
US8067662B2 (en) Systems and methods for wound protection and exudate management
US4860737A (en) Wound dressing, manufacture and use
AU2002366208B2 (en) A wound dressing
CN101052365B (en) Multicomponent bundling belt for treating human body or animal body wound under the negative pressure condition
US9302033B2 (en) Wound treatment device with elastically deformable vacuum producing element
EP1303239B2 (en) A dressing
AU683684B2 (en) Improved wound dressing
EP0059049A1 (en) Wound dressing
US8252971B2 (en) Systems and methods for protecting incisions
JP5868960B2 (en) Protection of the wound
US7951124B2 (en) Growth stimulating wound dressing with improved contact surfaces
ES2348306T3 (en) Multilayer dressing for wounds.
EP2359784B1 (en) Absorption body for attachment to human or animal skin surfaces
RU2615075C2 (en) Wound dressing and methods
JP6275678B2 (en) Intake port
AU2014204880B2 (en) Liquid-permeable primary dressing with a silicone coating
US4995382A (en) Wound dressing, manufacture and use

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)