WO2010011148A1 - Système de traitement des plaies par pression négative - Google Patents

Système de traitement des plaies par pression négative Download PDF

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Publication number
WO2010011148A1
WO2010011148A1 PCT/NZ2009/000147 NZ2009000147W WO2010011148A1 WO 2010011148 A1 WO2010011148 A1 WO 2010011148A1 NZ 2009000147 W NZ2009000147 W NZ 2009000147W WO 2010011148 A1 WO2010011148 A1 WO 2010011148A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
wound
negative pressure
patient
therapy system
Prior art date
Application number
PCT/NZ2009/000147
Other languages
English (en)
Inventor
Frederick George
Original Assignee
Frederick George
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 Frederick George filed Critical Frederick George
Publication of WO2010011148A1 publication Critical patent/WO2010011148A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/10—Bandages or dressings; Absorbent pads specially adapted for fingers, hands, or arms; Finger-stalls; Nail-protectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/06—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings
    • A61F13/064—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings for feet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/91—Suction aspects of the dressing
    • A61M1/917—Suction aspects of the dressing specially adapted for covering whole body parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/0017—Wound bandages possibility of applying fluid
    • A61F2013/00174—Wound bandages possibility of applying fluid possibility of applying pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00412—Plasters use for use with needles, tubes or catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00536—Plasters use for draining or irrigating wounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/0054—Plasters use for deep wounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00795—Plasters special helping devices
    • A61F2013/008—Plasters special helping devices easy removing of the protection sheet
    • A61F2013/00812—Plasters special helping devices easy removing of the protection sheet perforate or breakable zones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/96—Suction control thereof
    • A61M1/962—Suction control thereof having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/08—Limbs
    • A61M2210/083—Arms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/08—Limbs
    • A61M2210/086—Legs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/10—Trunk

Definitions

  • the invention generally relates to a negative pressure wound therapy system.
  • Negative pressure applied to a wound on a patient may promote healing of the wound for example by promoting blood flow to the wound.
  • existing negative pressure wound therapy systems may be complicated and expensive. It may be a time consuming job for a skilled nurse to properly apply a negative wound therapy system to a patient.
  • such systems comprise a dressing and catheter which are applied to the wound.
  • a plastic patch is applied over the dressing and catheter and is sealed against the patient's skin using an adhesive.
  • a partial vacuum is created inside the plastic patch by pumping fluid out.
  • the patch may be prone to leaking, and leaks can be hard to find and time consuming to fix.
  • the system may comprise computerised electrical pumps with electrical cords and tubes which can limit the patient's mobility. The patch must be removed in order to change dressing, and this repeated removing can damage protective epithelial cells in some patients.
  • the invention broadly consists in a negative pressure wound therapy system comprising: an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising at least one opening arranged to be sealed against the patient's skin, and the sleeve having at least one sealable port through which fluid may be evacuated; and a perforated body arranged to be positioned between the wound and the sleeve such that the perforated body provides a vacuum space above the wound to enable at least a partial vacuum over the wound to be created when fluid is evacuated from the sleeve.
  • the sealable port comprises a valve that is operable to allow fluid within the sleeve to be evacuated when the sleeve is fitted and the opening(s) are sealed to die patient's body.
  • the perforated body is a substantially hollow body with one or more openings.
  • the perforated body is an open— celled body.
  • the negative pressure wound therapy system comprises an integral elastic ring around each opening arranged to hermetically seal the opening against the patient's skin.
  • the negative pressure wound therapy system comprises a dressing between the wound and the perforated body.
  • the negative pressure wound therapy system comprises an open channelled material between the skin around the wound and the sleeve.
  • the negative pressure wound therapy system comprises an absorbent material between the perforated body and the sleeve.
  • the sleeve is arranged to fit over a patient's foot.
  • the negative pressure wound therapy system comprises a footbed.
  • the footbed is formed from the perforated body extending along the sole of the foot.
  • the sleeve comprises two openings and is arranged to fit over a patient's arm.
  • the sleeve comprises two or more openings and arranged to fit over a patient's torso.
  • the invention broadly consists in a kit of parts comprising: an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising at least one opening arranged to be sealed against the patient's skin, and the sleeve having at least one sealable port through which fluid may be evacuated; and a perforated body arranged to be positioned between the wound and the sleeve such that the perforated body provides a vacuum space above the wound to enable at least a partial vacuum over the wound to be created when fluid is evacuated from the sleeve.
  • the invention broadly consists in a negative pressure wound therapy system comprising: an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising at least one opening arranged to be sealed against the patient's skin; and a perforated body arranged to be positioned between the wound and the sleeve such that the perforated body provides a vacuum space above the wound to enable at least a partial vacuum over the wound to be created when fluid is evacuated from the sleeve.
  • the invention broadly consists in a kit of parts comprising: an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising at least one opening arranged to be sealed against the patient's skin; and a perforated body arranged to be positioned between the wound and the sleeve such that the perforated body provides a vacuum space above the wound to enable at least a partial vacuum over the wound to be created when fluid is evacuated from the sleeve.
  • the second, third, and fourth aspects of die invention may have any one or more of the features mentioned in respect of the first aspect of the invention.
  • the invention broadly consists in a method of applying negative pressure to a wound comprising the steps of: placing a perforated body over the wound, the perforated body arranged to provide a space to create a partial vacuum over the wound when fluid is evacuated from a sleeve fitted to the patient's body; fitting an air impervious sleeve, having at least one opening that is arranged to be sealed against the patient's skin, over the patient's body part in proximity to the wound so that the perforated body is provided between the wound and the sleeve; v sealing the opening(s) of the sleeve against the patient's skin; and evacuating fluid from the sleeve so that a partial vacuum is created in the space over the wound provided by the perforated body.
  • the step of evacuating fluid comprises evacuating fluid from a sealable port provided on the sleeve.
  • the sealable port comprises a valve that is operable to allow fluid within the sleeve to be evacuated when the sleeve is fitted and the opening(s) are sealed to the patient's body
  • the method of applying a negative pressure to a wound further comprises the step of dressing the wound.
  • the method of applying a negative pressure to a wound further comprises the step of fitting an open channelled material between the skin around the wound and the sleeve.
  • the method of applying a negative pressure to a wound further comprises the step of providing an absorbent material between the perforated body and the sleeve.
  • the invention broadly consists in use, in the manufacture of a negative pressure wound therapy system or kit for applying negative pressure to a wound, of an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising at least one opening arranged to be sealed against the patient's skin, and a perforated body arranged to be positioned between the wound and the sleeve such that the perforated body provides vacuum space above the wound to create a partial vacuum over the wound when fluid is evacuated from the sleeve.
  • the invention broadly consists in use of a negative pressure wound therapy system or Mt including an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising at least one opening arranged to be sealed against the patient's skin, and a perforated body arranged to be positioned between the wound and the sleeve such that the perforated body provides a vacuum space above the wound to enable at least a partial vacuum over the wound to be created when fluid is evacuated from the sleeve, for the technical purpose of applying a negative pressure to a wound.
  • a negative pressure wound therapy system or Mt including an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising at least one opening arranged to be sealed against the patient's skin, and a perforated body arranged to be positioned between the wound and the sleeve such that the perfor
  • the invention broadly consists in negative pressure wound therapy system comprising: an air impervious sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, the sleeve comprising an opening arranged to be sealed against the patient's skin, and the sleeve having a check valve through which fluid may be evacuated; a perforated body arranged to be positioned between the wound and the sleeve such that the perforated body provides a vacuum space above the wound to enable at least a partial vacuum over the wound to be created when fluid is evacuated from the sleeve; and an integral elastic ring around the opening arranged to hermetically seal the opening against the patient's skin.
  • the sixth, seventh, and eighth aspects of the invention may have one or more of the features mentioned in respect of the first aspect of the invention.
  • perforated body as used in this specification and claims, unless the context dictates otherwise, is intended to mean any body that is shaped or formed such that it can act to space at least a portion of the sleeve from the wound site and which also acts to form a vacuum space that may be vacated of fluid to form a partial vacuum between the sleeve and the wound site, and including by way of example only any substantially hollow body or formation, cup-shaped or otherwise, with one or more apertures through the body, or a substantially solid but porous or open-celled body and where the hollow or solid bodies may be either rigid or resiliently deformable depending on the application.
  • fluid as used in this specification and claims, unless the context dictates otherwise, is intended to mean any gas or liquid that may be evacuated from the sleeve in order to form a partial vacuum in the sleeve and may include, but is not limited to, air, any gas that may be generated by the human body, water, and any liquid that may be generated by the human body such as exudates from wounds including blood, pus, plasma, and mucus.
  • Figure 1 is a perspective view of one embodiment of a negative pressure wound therapy system of the invention with a sleeve arranged to fit over a patient's foot, and a valve provided on the sleeve;
  • Figure 2 is a perspective view of another embodiment of a negative pressure wound therapy system of the invention with a sleeve arranged to fit over a patient's foot, and a port provided on the sleeve;
  • Figure 3 is a perspective view of another embodiment of a negative pres.sure wound therapy system of the invention with a sleeve arranged to fit over a patient's foot, and a conduit or tube passing between the patient's skin and an opening of the sleeve;
  • Figure 4 is a close-up cross-section view of the negative pressure wound therapy system of the invention showing a perforated body covering a wound;
  • Figure 5 is a perspective view of another embodiment of a negative pressure wound therapy system of the invention in which the perforated body is arranged to extend along a patient's foot, and shown with the sleeve removed;
  • Figure 6 is a perspective view of another embodiment of a negative pressure wound therapy system of the invention with a sleeve arranged to fit over a patient's arm; and Figure 7 is a perspective view of another embodiment of a negative pressure wound therapy system of the invention with a sleeve arranged to fit over a patient's torso.
  • the invention relates to a negative pressure wound therapy system comprising a sleeve arranged to fit over a wound and part of a patient's body in proximity to the wound, and a valve arranged to allow fluid, including air, to flow out of the sleeve.
  • a perforated body is provided between the wound and the sleeve to create a vacuum space such that a partial vacuum may be created and maintained over or in the vicinity of the wound.
  • one embodiment of the negative pressure wound therapy system 2 comprises a sleeve 4 arranged to fit over part of a patient's body and a wound.
  • the sleeve 4 is preferably flexible such that it can substantially conform to the contours of the body part to which it is fitted but may alternatively be rigid, or may have flexible parts and rigid parts.
  • the sleeve 4 may be arranged to fit over a patient's foot, toes, and ankle for example if a wound is located on the patient's heel, sole of the foot, or top of the foot.
  • the sleeve 4 may be arranged to fit over any suitable part of a patient's body such as an arm, leg, torso, or hand.
  • the sleeve 4 is impervious to fluid such as air and wound exudates and discharge. This means that fluid is not able to flow or pass through the sleeve 4 itself.
  • the sleeve 4 may be made from vinyl, rubber, silicone, plastic, any suitable elastomer, or any other suitable material.
  • the sleeve 4 comprises one or more openings 10 arranged so that the sleeve 4 can be fitted around part of a patient's body.
  • the or each opening 10 is arranged to be sealed against a patient's skin so that a partial vacuum can be created inside the sleeve 4, and so that no fluid is able to enter or exit the sleeve 4 through the opening 10 once the partial vacuum is created.
  • the sleeve 4 comprises a valve 6 operable to allow fluid to flow from the inside of the sleeve 4 to the outside of the sleeve 4.
  • the valve 6 may . be integral with the sleeve 4, or provided on the sleeve 4 in any other suitable manner.
  • the valve 6 may be a one-way valve or check valve such as a floating disk valve, a duckbill valve, a spring loaded valve, or any other suitable valve. Fluid may be trapped inside the sleeve 4 against the patient's skin when the sleeve is fitted over part of the patient's body.
  • the fluid may be evacuated from the sleeve 4, for example by using a pump or other vacuum apparatus operatively connected to the valve, so that a partial vacuum may be created inside the sleeve 4 in order to apply negative pressure wound therapy to a wound.
  • a vacuum apparatus may be connected to the valve 6 by a tube 8 or conduit or in any other suitable manner.
  • the tube 8 may be flexible or rigid.
  • the sleeve 4 may comprise a sealable or operable port 11.
  • the port 11 provides a flow path through the sleeve 4 to enable fluid to be evacuated in order to create a partial vacuum inside the sleeve 4.
  • a vacuum apparatus may be connected to the port 11 for example via a tube or conduit in order to evacuate fluid from the sleeve 4. Once the sleeve 4 is evacuated, and the partial vacuum is created, the vacuum apparatus may be disconnected from the port 11, and the port 11 may be sealed, plugged, or closed to maintain the partial vacuum within the fitted sleeve 4.
  • the port 11 may be sealed, plugged, or closed with a plug or bung adapted to couple with the port 11 so that the sealed port 11 is impervious to fluid flow.
  • a valve may be coupled with the port 11 that is arranged to prevent fluid flow into the sleeve 4 through the port 11.
  • the tube or conduit may comprise a valve along its length and such tube or conduit may be permanently coupled with the port 11 to prevent fluid flow into the sleeve 4.
  • the port 11 may be sealed, plugged, or closed in any suitable manner.
  • the port 11 may be in the form of an oral inflation/ deflation valve.
  • a conduit or tube 8 may run from the inside of the sleeve 4 to the outside of the sleeve 4 by passing between the patient's skin and the opening 10.
  • the conduit or tube 8 provides a flow path to enable fluid to be evacuated in order to create a partial vacuum inside the sleeve 4.
  • a vacuum apparatus may be connected to the conduit or tube 8 in order to evacuate fluid from the sleeve 4.
  • the vacuum apparatus may be disconnected from the conduit or tube 8, and the conduit or tube 8 may be sealed, plugged, or closed to maintain the partial vacuum within the fitted sleeve 4.
  • the conduit or tube 8 may be sealed, plugged, or closed with a plug, bung, valve, or in any other suitable manner. In this form, the conduit or tube 8 may remain in place permanently while the negative pressure wound therapy system is fitted to the patient.
  • the conduit or tube 8 may be used to maintain the vacuum as required, or may act as a catheter.
  • the conduit or tube 8 may be may be removed from the sleeve 4 after the fluid has been evacuated.
  • the conduit or tube 8 may be a separate component that is inserted into the sleeve 4 once fitted, or alternatively the conduit may be fixed or attached to the sleeve such that one end of the conduit or tube 8 is located inside the sleeve 4, and the other end is located outside the sleeve 4.
  • the conduit or tube 8 need not necessarily extend out opening 10 as shown, but may be connected or operatively coupled at one end to a port or aperture provided through the surface of the sleeve 4, for example like the port 11 shown in Figure 2.
  • the sleeve 4 may resemble a sock with one opening 10 arranged so that a patient can insert their foot into the sleeve 4.
  • the sleeve 4 may comprise two or more openings so that the sleeve 4 can be fitted to other body parts or about other body regions.
  • Each opening 10 is arranged to be hermetically sealed against a patient's skin so that fluid, including air, may not enter or exit the sleeve 4 through the opening 10.
  • the sleeve 4 should also be hermetically sealed against outside of the tube 8, and the outside of the tube 8 should be hermetically sealed against the patient's skin so that no fluid may enter or exit the sleeve 4 through the opening 10 or where the tube 8 passes under the opening 10.
  • the opening 10 may need to be sealed against the patient's skin at the point where the tube 8 or conduit was provided.
  • the sleeve 4 comprises an integral resiJient, elastic cuff or ring that encircles the opening 10 and that is arranged to stretch over and seal against the patient's skin.
  • a resilient, elastic cuff or ring may quickly and reliably seal the opening 10 of the sleeve 4. If a conduit or tube 8 is removed from between a patient's skin and a cuff or ring, the cuff or ring may quickly and automatically seal against the patient's skin at the point where the tube is removed. Alternatively, the opening 10 may be sealed against the patient's skin by using an adhesive, or in any other suitable manner.
  • the negative pressure wound therapy system 2 comprises a perforated body 12 provided between a wound 14 on the patient's skin 16 and the sleeve 4.
  • the perforated body 12 is arranged to provide a vacuum space over the wound that may be vacated of fluid in order to create a partial vacuum over the wound 14.
  • the perforated body 12 may be arranged to withstand the pressure created by the partial vacuum without collapsing.
  • the perforated body 12 contains at least one fluid outlet so that fluid such as air and wound exudates or discharge may flow out of the perforated body 12.
  • the perforated body 12 may be a cup shaped object or shell provided with one or more openings.
  • the perforated body 12 may be made from an open cell foam material or a porous material.
  • the perforated body 12 may be made from plastic, metal, or any other suitable material.
  • the perforated body 12 may be a substantially hollow body or formation with one or more apertures through the body.
  • the perforated body 12 may be a substantially solid but porous or open-celled body.
  • the perforated body 12 may be either rigid or resiliently deformable.
  • Fluid may be pumped out of the perforated body 12 and sleeve 4 via a valve, port, tube, or conduit, or in any other suitable manner with a vacuum apparatus, such as a pump, (not shown) or in any other suitable manner.
  • a partial vacuum may be created over or in close vicinity of the wound 14 when the space underneath or within tine perforated body 12 is evacuated of fluid. Evacuation of the fluid within the sleeve 4 may cause the sleeve 4 to collapse against the perforated body 12 and the skin 16 by the sleeve (except for the area of skin covered by the perforated body 12).
  • a desired level or degree of vacuum may be achieved by using a feedback mechanism on an electric pump, or by using a specially designed manual pump, such as a squeeze bulb pump, that will only allow for a certain maximum vacuum pressure to be created.
  • the squeeze pump may be integral with the sleeve 4, or may be external to the sleeve 4.
  • the patient or another person may visually or tactually determine if the vacuum pressure decreases (which may indicate a leak in the sleeve 4 or opening 10) as the sleeve 4 may loosen on the body part or collapse more loosely against the patient's skin 16. Fluid may be evacuated from the sleeve 4 in any suitable manner.
  • the perforated body 12 When applying the negative pressure wound therapy system to a patient to treat a wound 14, the perforated body 12 may be placed over the wound 14 in order to fully or partially cover it.
  • the sleeve 4 may then be slid over the patient's body part in proximity to the wound 14.
  • the sleeve 4 may be slid over the patient's body part first, and then the perforated body 12 may be slid between the sleeve 4 and the patient's skin until it is positioned between the wound 14 and the sleeve 4.
  • the perforated body 12 may be positioned in the sleeve 4 before applying it to the patient.
  • the sleeve 4 and perforated body 12 may both then be slid over the body part together, in order to position the perforated body 12 over the wound 14.
  • a dressing 18 may be applied directly to the wound 14 so that it forms a barrier between the wound 14 and the perforated body 12.
  • the dressing 18 may be paraffin impregnated, antibiotic, silver ion, colloidal, formed plastic, or any other suitable type of dressing.
  • the dressing 18 may help protect the wound 14 from hard edges or sides that may be provided on the perforated body 12.
  • An open channelled material 20 may be placed on the skin 16 around the wound 14.
  • the open channelled material 20 may reduce friction between the skin 16 and the sleeve 4 so that it is easier to slide the sleeve 4 on and off the body part.
  • the open channelled material 20 may also provide a pathway so air between the skin 16 and the sleeve 4 may be more easily evacuated.
  • the open channelled material 20 may be a cotton weave, or any other suitable material.
  • the open channelled material 20 may entirely cover the body part within the sleeve 4, or may only surround the skin 16 in proximity to the wound 14.
  • the open channelled material 20 should not extend under or past the seal of the opening 10 as this may provide a pathway for fluid to enter the sleeve 4 and may affect the integrity of the partial vacuum.
  • the open channelled material 20 may be made from natural-fibre or synthetic materials such as cotton, wool, natural or synthetic flocking, polypropylene, or any other suitable material.
  • the open channelled material 20 may be adhered to the inside of the sleeve 4.
  • the open channelled material 20 may be provided by a natural-fibre or synthetic sock.
  • the open channelled material 20 may be provided by a natural-fibre or synthetic glove or mitten.
  • An absorbent material 22 may be provided between the perforated body 12 and the sleeve 4.
  • the absorbent material 22 may be made from cotton, wool, tissue, wood pulp or wood fluff pulp, super absorbent polymer or sodium polyacrylate, or any other suitable material.
  • the absorbent material 22 may absorb any wound exudates that may flow from the wound through the dressing 18 (if provided) and perforated body 12 when the fluid is being or has been evacuated.
  • the dressing 18 may also absorb wound exudates.
  • tubing or a catheter may be provided adjacent to the wound to carry wound exudates out of the sleeve 4 via the valve 6, port 11 , tube 8, or conduit and into a suitable receptacle.
  • the perforated body 12 may be extended along the sole of the foot 24 to provide a footbed 26.
  • the dressing 18 and absorbent material 22 may also extend along the sole of the foot.
  • the footbed 26 may be a complete or partial footbed, and may comprise other materials, such as an orthotic device.
  • the perforated body 12 may extend to other areas of the foot where wounds are present, such as the top of the foot (not shown) or the heel. Alternatively, a separate perforated body 12 may be provided between a wound 14 and the sleeve if more than one wound to be treated by negative pressure wound therapy is present.
  • the perforated body 12 will be made from a compressible material when a footbed 26 is provided in this manner.
  • the compressible perforated body 12 may compress so that wound exudates may be squeezed from the perforated body 12 into absorbent material or into a tube so that it can be expelled via a tube and valve or in any other suitable manner.
  • the structural memory of the compressible perforated body 12 may cause it to regain its uncompressed state, and in doing so, maintaining and effecting the partial vacuum over the wound 14.
  • Pressure relieving beds may be provided in other embodiments of the negative pressure wound therapy system for example to prevent a patient forming decubitus ulcers or bedsores.
  • the negative pressure wound therapy system 2 may be arranged to fit over a patient's arm 28 in order to treat a wound located on the arm 28.
  • the sleeve 4 may be worn on the upper arm 30, the lower arm 32, or over the elbow 34, or may extend any suitable length along the arm.
  • Two openings 10 are provided on the sleeve 4 (one opening 10 at each end of the sleeve 4) so that the sleeve 4 can be slipped or slid onto a patient's arm.
  • Each opening 10 is arranged to be sealed against the patient's skin for example by using an integral resilient, elastic cuff or ring that encircles the opening 10, or by using adhesive, or in any other suitable manner as previously described.
  • the sleeve 4 may comprise a valve 6 so that fluid can be evacuated and a partial vacuum can be created over a wound.
  • the sleeve 4 may comprise a port (not shown) so that fluid can be evacuated and a partial vacuum can be created over a wound.
  • the sleeve may comprise a tube or conduit (not shown) passing under one of the openings 10 so that fluid can be evacuated and a partial vacuum can be created over a wound. Fluid may be evacuated from the sleeve 4 in any suitable manner. It will be appreciated that any of the port, valve, and/or conduit evacuating configurations described with respect to this double-opening form of the sleeve.
  • the negative pressure wound therapy system 2 may be arranged to fit over a patient's torso 36 in order to treat a wound located on the torso 36.
  • the sleeve 4 may be worn over the hips, pelvis, upper legs, and lower torso, and may extend any suitable distance along the legs and torso.
  • Three openings 10 may be provided on the sleeve 4 (one opening 10 for each leg and one opening 10 for the torso) so that the sleeve 4 can be slipped or slid onto a patient's torso.
  • Each opening 10 is arranged to be sealed against the patient's skin for example by using an integral resilient, elastic cuff or ring that encircles the opening 10, or by using adhesive, or in any other suitable manner.
  • the sleeve 4 may only comprise two openings 10 and may only extend along the torso for example from the waist to the chest. Again, any of the port, valve, and/or conduit evacuating configurations previously described may be employed with this form of the sleeve.
  • the sleeve 4 may comprise a valve 6 so that fluid can be evacuated and a partial vacuum can be created over a wound.
  • the sleeve 4 may comprise a port (not shown) so that fluid can be evacuated and a partial vacuum can be created over a wound.
  • the sleeve may comprise a tube or conduit (not shown) passing under one of the openings 10 so that fluid can be evacuated and a partial vacuum can be created over a wound. Fluid may be evacuated from the sleeve 4 in any suitable manner.
  • a pressure relieving bed may be provided between the sleeve 4 and the patient's skin to prevent the formation of bedsores.
  • the pressure relieving bed may be formed from any suitable material and may include the perforated body, dressing, or absorbent material.
  • the pressure relieving bed may be provided in any suitable position such as over or in proximity to the sacral region.
  • a pressure relieving bed may be provided in any suitable embodiment of the invention.
  • the negative pressure wound therapy system 2 may be arranged to fit over any part of a patient's body in order to treat a wound.
  • a mitten shaped sleeve 4 with one opening 10 may be provided to treat a wound on a patient's hand.
  • a sleeve 4 similar to the one shown in Figure 6 with two openings 10 may be provided to treat a wound on a patient's leg.
  • Any of the port, valve, and/or conduit evacuating configurations previously described may be employed with any suitable embodiment of the sleeve.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Otolaryngology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

La présente invention concerne un système de traitement des plaies par pression négative comprenant un manchon imperméable à l'air disposé sur une plaie et sur une partie de l'organisme d'un patient à proximité de la plaie. Ledit manchon comprend au moins une ouverture conçue pour être hermétiquement fermée suite à son application contre la peau du patient, au moins un orifice hermétiquement refermable par lequel un fluide peut être évacué, ainsi qu'un corps perforé disposé entre la plaie et le manchon de façon à ce que le corps perforé ménage un espace vide au-dessus de la plaie pour permettre la création d'un vide au moins partiel au-dessus de la plaie lorsque le fluide est évacué du manchon.
PCT/NZ2009/000147 2008-07-24 2009-07-24 Système de traitement des plaies par pression négative WO2010011148A1 (fr)

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NZ569994 2008-07-24
NZ56999408 2008-07-24

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WO2010011148A1 true WO2010011148A1 (fr) 2010-01-28

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EP2417947A1 (fr) * 2010-08-12 2012-02-15 John Bennett Pansements à pression négative contourée intégrée
WO2012089202A3 (fr) * 2010-12-23 2012-08-23 Alfons Erdmann Élément de couverture pourvu d'un corps de fermeture
EP2636417A1 (fr) 2012-03-05 2013-09-11 Lohmann & Rauscher GmbH Agencement de pansement de plaies et dispositif de revêtement correspondant
EP3117806A1 (fr) 2015-07-16 2017-01-18 Lohmann & Rauscher GmbH Systeme de traitement des plaies
EP3120817A1 (fr) 2015-07-22 2017-01-25 Lohmann & Rauscher GmbH Systeme de traitement des plaies
AT15664U1 (de) * 2013-03-05 2018-01-15 Lohmann & Rauscher Gmbh Wundversorgungsanordnung, Verfahren zur Herstellung und Abdeckeinrichtung dafür
WO2020205445A1 (fr) * 2019-03-29 2020-10-08 Kci Licensing, Inc. Traitement par pression négative avec stabilisation de zone
US10842707B2 (en) 2012-11-16 2020-11-24 Kci Licensing, Inc. Medical drape with pattern adhesive layers and method of manufacturing same
US10849792B2 (en) * 2013-10-30 2020-12-01 Kci Licensing, Inc. Absorbent conduit and system
US10940047B2 (en) 2011-12-16 2021-03-09 Kci Licensing, Inc. Sealing systems and methods employing a hybrid switchable drape
US10940046B2 (en) 2013-10-30 2021-03-09 Kci Licensing, Inc. Dressing with sealing and retention interface
US10946124B2 (en) 2013-10-28 2021-03-16 Kci Licensing, Inc. Hybrid sealing tape
US10945889B2 (en) 2011-12-16 2021-03-16 Kci Licensing, Inc. Releasable medical drapes
US10967109B2 (en) 2013-10-30 2021-04-06 Kci Licensing, Inc. Dressing with differentially sized perforations
US10973694B2 (en) 2015-09-17 2021-04-13 Kci Licensing, Inc. Hybrid silicone and acrylic adhesive cover for use with wound treatment
US11020516B2 (en) 2008-03-05 2021-06-01 Kci Licensing, Inc. Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site
US11026844B2 (en) 2014-03-03 2021-06-08 Kci Licensing, Inc. Low profile flexible pressure transmission conduit
US11096830B2 (en) 2015-09-01 2021-08-24 Kci Licensing, Inc. Dressing with increased apposition force
US11154650B2 (en) 2013-10-30 2021-10-26 Kci Licensing, Inc. Condensate absorbing and dissipating system
US11246975B2 (en) 2015-05-08 2022-02-15 Kci Licensing, Inc. Low acuity dressing with integral pump
US11344666B2 (en) 2019-03-29 2022-05-31 Kci Licensing, Inc. Negative-pressure treatment with area stabilization
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US20220257850A1 (en) * 2019-07-30 2022-08-18 Kci Licensing, Inc. Negative-Pressure Dressing For Foot Treatment
US11957546B2 (en) 2014-06-05 2024-04-16 3M Innovative Properties Company Dressing with fluid acquisition and distribution characteristics

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Cited By (42)

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US11020516B2 (en) 2008-03-05 2021-06-01 Kci Licensing, Inc. Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site
US11400204B2 (en) 2010-03-16 2022-08-02 Kci Licensing, Inc. Delivery-and-fluid-storage bridges for use with reduced-pressure systems
EP2417947A1 (fr) * 2010-08-12 2012-02-15 John Bennett Pansements à pression négative contourée intégrée
WO2012089202A3 (fr) * 2010-12-23 2012-08-23 Alfons Erdmann Élément de couverture pourvu d'un corps de fermeture
US10940047B2 (en) 2011-12-16 2021-03-09 Kci Licensing, Inc. Sealing systems and methods employing a hybrid switchable drape
US10945889B2 (en) 2011-12-16 2021-03-16 Kci Licensing, Inc. Releasable medical drapes
US11969318B2 (en) 2011-12-16 2024-04-30 Solventum Intellectual Properties Company Releasable medical drapes
US11944520B2 (en) 2011-12-16 2024-04-02 3M Innovative Properties Company Sealing systems and methods employing a hybrid switchable drape
CN104363932A (zh) * 2012-03-05 2015-02-18 罗曼-劳氏股份有限公司 伤口处理装置及用于其的覆盖装置
US11752040B2 (en) 2012-03-05 2023-09-12 Lohmann & Rauscher Gmbh Wound care arrangement and covering unit therefor
EP2636417B1 (fr) * 2012-03-05 2017-04-26 Lohmann & Rauscher GmbH Agencement de pansement de plaies et dispositif de revêtement correspondant
DE202013012333U1 (de) 2012-03-05 2016-05-11 Lohmann & Rauscher Gmbh Wundversorgungsanordnung und Abdeckeinrichtung dafür
WO2013131638A1 (fr) 2012-03-05 2013-09-12 Lohmann & Rauscher Gmbh Dispositif de soin des plaies et son moyen de recouvrement
EP2636417A1 (fr) 2012-03-05 2013-09-11 Lohmann & Rauscher GmbH Agencement de pansement de plaies et dispositif de revêtement correspondant
US11839529B2 (en) 2012-11-16 2023-12-12 Kci Licensing, Inc. Medical drape with pattern adhesive layers and method of manufacturing same
US11395785B2 (en) 2012-11-16 2022-07-26 Kci Licensing, Inc. Medical drape with pattern adhesive layers and method of manufacturing same
US10842707B2 (en) 2012-11-16 2020-11-24 Kci Licensing, Inc. Medical drape with pattern adhesive layers and method of manufacturing same
AT15664U1 (de) * 2013-03-05 2018-01-15 Lohmann & Rauscher Gmbh Wundversorgungsanordnung, Verfahren zur Herstellung und Abdeckeinrichtung dafür
US10946124B2 (en) 2013-10-28 2021-03-16 Kci Licensing, Inc. Hybrid sealing tape
US10967109B2 (en) 2013-10-30 2021-04-06 Kci Licensing, Inc. Dressing with differentially sized perforations
US11793923B2 (en) 2013-10-30 2023-10-24 Kci Licensing, Inc. Dressing with differentially sized perforations
US11964095B2 (en) 2013-10-30 2024-04-23 Solventum Intellectual Properties Company Condensate absorbing and dissipating system
US10849792B2 (en) * 2013-10-30 2020-12-01 Kci Licensing, Inc. Absorbent conduit and system
US10940046B2 (en) 2013-10-30 2021-03-09 Kci Licensing, Inc. Dressing with sealing and retention interface
US11744740B2 (en) 2013-10-30 2023-09-05 Kci Licensing, Inc. Dressing with sealing and retention interface
US11154650B2 (en) 2013-10-30 2021-10-26 Kci Licensing, Inc. Condensate absorbing and dissipating system
US11026844B2 (en) 2014-03-03 2021-06-08 Kci Licensing, Inc. Low profile flexible pressure transmission conduit
US11957546B2 (en) 2014-06-05 2024-04-16 3M Innovative Properties Company Dressing with fluid acquisition and distribution characteristics
US11246975B2 (en) 2015-05-08 2022-02-15 Kci Licensing, Inc. Low acuity dressing with integral pump
EP3117806A1 (fr) 2015-07-16 2017-01-18 Lohmann & Rauscher GmbH Systeme de traitement des plaies
US20170014275A1 (en) * 2015-07-16 2017-01-19 Lohmann & Rauscher Gmbh Wound care device
RU2720107C2 (ru) * 2015-07-16 2020-04-24 Ломанн Унд Раушер Гмбх Система для обработки ран
CN106344972A (zh) * 2015-07-16 2017-01-25 罗曼-劳氏股份有限公司 伤口处理装置
EP3120817A1 (fr) 2015-07-22 2017-01-25 Lohmann & Rauscher GmbH Systeme de traitement des plaies
US11950984B2 (en) 2015-09-01 2024-04-09 Solventum Intellectual Properties Company Dressing with increased apposition force
US11096830B2 (en) 2015-09-01 2021-08-24 Kci Licensing, Inc. Dressing with increased apposition force
US10973694B2 (en) 2015-09-17 2021-04-13 Kci Licensing, Inc. Hybrid silicone and acrylic adhesive cover for use with wound treatment
US11399984B2 (en) 2019-03-29 2022-08-02 Kci Licensing, Inc. Negative-pressure treatment with area stabilization
CN113660918A (zh) * 2019-03-29 2021-11-16 凯希特许有限公司 具有区域稳定性的负压治疗
WO2020205445A1 (fr) * 2019-03-29 2020-10-08 Kci Licensing, Inc. Traitement par pression négative avec stabilisation de zone
US11344666B2 (en) 2019-03-29 2022-05-31 Kci Licensing, Inc. Negative-pressure treatment with area stabilization
US20220257850A1 (en) * 2019-07-30 2022-08-18 Kci Licensing, Inc. Negative-Pressure Dressing For Foot Treatment

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