301 results about "Wound.exudate" patented technology

A system, method, and apparatus are disclosed for dressing a wound. The apparatus comprises a liquid and gas permeable transmission layer, an absorbent layer for absorbing wound exudate, the absorbent layer overlying the transmission layer, a gas impermeable cover layer overlying the absorbent layer and comprising a first orifice, wherein the cover layer is moisture vapor permeable.

A method for treating a wound that includes incorporating a wound dressing comprising a plurality of fibers, each fiber having a length of at least two (2) inches, into a wound to cause the walls of the wound to remain apart and allow the wound to heal from the inside to the outside, and removing the wound exudate.

Apparatus for the application of topical negative pressure therapy to a wound site is described, the apparatus comprising: a wound contacting element for retaining wound exudate fluid therein; a wound covering element that provides a substantially airtight seal over the wound contacting element and wound site; a vacuum connection tube connecting a wound cavity to a vacuum source; and a vacuum source connected to a distal end of the vacuum connection tube.

Provided, in one embodiment, is a vacuum wound dressing for covering a wound bed comprising: a wound contact layer comprising a fibrous blend or fibrous material that forms a cohesive gel when wetted by wound exudate; a source of vacuum situated to be separated from the wound bed by the wound contact layer; and a vacuum sealing layer covering the wound contact layer and adapted to retain relative vacuum in the wound contact layer, wherein (i) the dressing is essentially missing a non-gelling, foam layer in which the source of vacuum is situated or (ii) the vacuum sealing layer comprises as an outer layer a foam layer.

An apparatus (1) for cleansing wounds (5) in which irrigant fluid from a reservoir connected to a conformable wound dressing (2) and wound exudate from the dressing are moved by a device (18) (which may be a single pump or two pumps) for moving fluid through a flow path (6, 7, 9, 10) which passes through the dressing with a means for providing simultaneous aspiration and irrigation of the wound, and means for supplying thermal energy to the fluid in the wound. The former provides a desired balance of fluid at a controlled nominal flow rate that removes materials deleterious to wound healing, while distributing materials that are beneficial in promoting wound healing over the wound bed. The latter maintains a temperature at the wound bed under the wound dressing at a level that promotes wound healing.

A wound shield for exudate management may include a conformable frame to circumscribe a wound. The conformable frame may be formed of material for absorbing wound exudate. Exudate absorbing material may also be one of two or more layers of material forming the conformable frame. The layers may be arranged to keep the exudate absorbing layer at some selected distance from a patients skin. Any suitable dressing may be secured over the conformable frame providing separation between the wound and the dressing. The wound frame may provide pressure relief around a wound or pressure sore to permit healing. The conformable frame may be wrapped, in a spiral, around a wound providing an increasing pressure relief by increasing distance from the wound. A conformable frame may be composed of one or more layers of any suitable material and may include adhesive on one or more surfaces to secure the frame to the wound site and or to secure the dressing to the conformable frame. One layer of the two or more layers of material forming the conformable frame may be a wicking or conduit material that draws exudate from the wound and transports the exudate to any suitable media for exudate storage. The exudate storage may be one or more layers of a dressing covering the wound site, or it may be a removable reservoir.

A tunnel dressing for use in treating a tunneling wound using negative pressure wound therapy. The tunnel dressing includes an elongate permeable member having a closed distal end for entering the wound and an open proximal end into which an applicator is removably disposed for guiding the dressing into the wound. The tunnel dressing has a support structure adapted to transport wound exudates away from the wound and to resist compression under suction. The tunnel dressing also has a wound contact surface adapted to minimize tissue entanglement to facilitate removal. The support structure and wound contact surface may be formed from the same material or from two adjacent layers of different material.

A wound therapy device comprising a head and a surgical drape. The head comprises a planar flange portion and a tubular connector piece on a first face that communicates with an aperture extending to a second face. The second face is formed with projections that define flow channels for facilitating flow of liquids to and from the aperture. The device may provide medicated fluid to the wound evenly while withdrawing wound exudates

A system to promote the healing of an exuding wound includes a wound dressing, a subatmospheric pressure mechanism, and a collection canister. The wound dressing is dimensioned for positioning relative to a wound bed of a subject. The subatmospheric pressure mechanism includes a control unit disposed within a housing. The control unit includes a vacuum source associated with a vacuum port. The collection canister has an interior wall which defines an internal chamber. The internal chamber is in fluid communication with the vacuum source of the subatmospheric pressure mechanism through the vacuum port and with the wound dressing for collecting exudates removed for the wound bed under influence of the vacuum source. The canister including a baffle mechanism disposed within the internal chamber for dampening the movement of the collected exudates.

Medical articles including an absorbent layer, a backing layer and an optional liquid permeable facing layer are disclosed. The construction of the medical article is such that volumetric expansion of the absorbent layer is allowed in directions parallel to the surface of the backing layer as the absorbent layer absorbs moisture. The medical article may include a debonding agent located between the absorbent layer and the backing layer. The absorbent layer is operably attached to the backing layer. When the absorbent layer absorbs moisture, e.g., wound exudate, at least a portion of the absorbent layer detaches from the backing layer such that the absorbent layer can expand and move relative to the backing. The debonding agent facilitates this change from attachment to detachment of the absorbent layer to the backing. The medical articles of the present invention may also be constructed such that a portion of the front surface of the backing layer located directly opposite the absorbent layer is free of adhesive. The adhesive free area or areas may be provided in place of a physical debonding agent or in addition to a physical debonding agent.

A dressing that comprises a contact layer for contacting a wound, with the contact layer including silicone; a foam-based hydrophilic middle layer that carries a metal-based antimicrobial agent; and a backing layer that prevents moisture within the dressing from escaping into the air through evaporation. Silicone in the contact layer interacts with the wound to minimize the appearance of scar tissue. Moisture, either applied beforehand or from the wound exudate, travels through the porous contact layer into the foam middle layer. There, the moisture acts to release metal ions from controlled-release mechanisms, such as zeolites containing the metal ions. The ions then travel within the moisture into the wound, where they act to kill bacteria and other infectious microorganisms and to prevent infections from gaining a foothold. Many embodiments, for the metal-based antimicrobial agent, use silver ions or a combination of silver ions and other metal ions.

An integrated system for assessing wound exudates from the wound of a patient is described. The system may contain functionality to detect, process and report various wound parameters. The system also may make treatment determinations based on these findings. The system may detect one or more physiological values of the wound exudates from the wound of the patient. The system may means for comparing the one or more detected physiological values to predetermined physiological values in order to obtain a comparison result in real time. The system may include a processor 15 which provides an electronic signal based on a comparison result in which the electronic signal may correspond to guidelines for treating the wound 13. The system may be integrated with other wound treatment devices, such as negative pressure wound therapy devices (NPWT) 9.

A wound dressing can include a backing layer, a facing layer which is permeable for wound exudate and blood and which, when in use, is in contact with the wound, and an absorbent core. The backing layer and the facing layer can be joined together in order to form a pouch. The absorbent core can be located within the pouch and can include at least a first layer and a second layer. The first layer can be located closer to the facing layer than the second layer. The first layer can be configured to provide a flow of liquid predominantly in a direction perpendicular to the extension of the facing layer. The second layer can be configured to provide a flow of liquid predominantly in a direction parallel to the extension of the facing layer.

The present invention is directed to a wound or tissue dressing comprising a bacteria having the property of producing lactic acid from sugars by fermentation of the sugars. The bacteria preferably belongs to the family of lactic acid bacteria. The family of lactic acid bacteria refers to any bacteria belonging to a genus selected from the group consisting of Carnobacterium, Enterococcus, Lactobacillus, Lactococcus, Leuconostoc, Oenococcus, Pediococcus, Streptococcus, Tetragenococcus, Vagococcus and Weissella. There is also provided a wound or tissue dressing comprising an absorbent compound for absorbing wound exudate, wherein said wound or tissue dressing is attached to or comprises a lactic acid bacterium. The utility of the present invention is demonstrated by use of the wound or tissue dressings in methods for treating a wound or damaged tissue in an individual, said method comprising the steps of contacting said wound or damaged tissue with the wound or tissue dressing according to the invention, thereby treating the wound or damaged tissue. The treatment results in healing of the wound or in accelerated healing of the wound. There is also provided the use of a lactic acid bacteria in the manufacture of a wound or tissue dressing for treating or accelerating the healing of a wound in an individual.

Disclosed herein are several embodiments of a negative pressure apparatus and methods of using the same in the treatment of wounds. Some embodiments are directed towards improved fluidic connectors configured to transmit irrigation fluid and to apply aspiration to a wound, for example using softer, kink-free conformable layers. Some embodiments may comprise a first channel for delivering irrigation fluid to the wound and a second channel for transmitting negative pressure and removing fluid comprising irrigation fluid and wound exudate from the wound, wherein the channels comprise a flexible spacer material. Some embodiments are directed toward an irrigation manifold attachable to or incorporated as part of a distal end of an irrigation and aspiration fluidic connector.

The invention discloses a liquid wound dressing which is characterized by comprising the following raw materials in parts by weight: 100-180 parts of a medical polymer film forming material, 0-20 parts of chitosan, 10-25 parts of polyethylene glycol 400 and 10-28 parts of glycerin, wherein the medical polymer film forming material is one in polyvinyl alcohol and polyvinyl butyral or a mixture of carbomer and one in the polyvinyl alcohol and the polyvinyl butyral. The liquid wound dressing can absorb the wound exudate, can effectively debride, maintains the surface of a wound to be wet, promotes the wound healing and is good in sterilizing effect.