2372results about "Plasters" patented technology

This invention is directed to advanced hemorrhage control wound dressings, and methods of using and producing same. The subject wound dressing is constructed from a non-mammalian material for control of severe bleeding. The wound dressing for controlling severe bleeding is formed of a biomaterial comprising chitosan, a hydrophilic polymer, a polyacrylic polymer or a combination thereof. The kind of severe, life-threatening bleeding contemplated by this invention is typically of the type not capable of being stanched when a conventional gauze wound dressing is applied with conventional pressure to the subject wound. The wound dressing being capable of substantially stanching the flow of the severe life-threatening bleeding from the wound by adhering to the wound site, to seal the wound, to accelerate blood clot formation at the wound site, to reinforce clot formation at the wound site and prevent bleed out from the wound site, and to substantially prohibit the flow of blood out of the wound site.

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 of treating tissue damage comprises applying a negative pressure to a wound sufficient in time and magnitude to promote tissue migration and thus facilitate closure of the wound. The method is applicable to wounds, burns, infected wounds, and live tissue attachments. A wound treatment apparatus is provided in which a fluid impermeable wound cover is sealed over a wound site. A screen in the form of an open-cell foam screen or a rigid porous screen is placed beneath the wound cover over the wound. A vacuum pump supplies suction within the wound cover over the treatment site.

A wound dressing for vacuum therapy comprising: a cover configured for placement over the wound to maintain a reduced pressure over the wound and adapted for communication with a source of vacuum, and a screen structure for placement between the cover and the wound, wherein the screen structure is adapted to remove or inactivate undesirable components from the wound environment and / or to concentrate desirable components present in the wound environment. Also provided are kits for the assembly of such wound dressings, and systems comprising the wound dressings in combination with a source of vacuum.

The composite wound dressing apparatus promotes healing of a wound via the use of an external peristaltic vacuum pump. The external peristaltic pump applies a vacuum pressure to the wound to effectively draw wound fluid or exudate away from the wound bed. The external peristaltic pump is tethered to the wound dressing and is portable, preferably, carried by the patient in a support bag, which permits patient mobility. Moreover, the patient does not need to be constrained for any period of time while exudate is being removed from the wound.

A conformable adhesive article for use as a sterile medical dressing is described. The article includes a breathable polymeric matrix, a plurality of phases, and an adhesive composition positioned on the polymeric matrix. The plurality of phases preferably provide reinforcement and stiffness to the article. The article permits transport of moisture across the breathable polymeric matrix, preferably at an Inverted water moisture vapor transmission rate of at least 300 g / m2 / 24 hours.

A modified vacuum assisted wound closure system adapted for concurrent applications of phototherapy having a foam pad for insertion substantially into the wound site and a wound drape for sealing enclosure of the foam pad at the wound site. The foam pad includes an optical pigtail, whereby desired wavelength of light may be directed into and about the wound site. The foam pad is placed in fluid communication with a vacuum source for promotion of fluid drainage. The foam pad is made of a highly reticulated, open-cell polyurethane or polyether foam for good permeability of wound fluids while under suction and is also embedded with an optical pigtail. The optical pigtail comprises an optical fiber that has been formed to fan into a plurality of sections. The fibers of the most distal fanned sections, which are implanted in the foam pad at its base, are provided with tiny optical slots, oriented away from the foam pad and toward the wound site. Each optical slot is made by stripping the cladding from the optical fiber in the desired areas of the fanned sections to form slot radiators. Because it is necessary to trim the foam pad in preparation for therapy, the optical fibers comprise plastics, such as acrylic or styrene. Upon placement of the pad, having the optical pigtail embedded therein, the wound drape is firmly adhered about the VAC therapy suction hose as well as the extending optical fiber to prevent vacuum leakage.

A method and apparatus are disclosed for dressing a wound. The apparatus comprises an absorbent layer for absorbing wound exudate, a liquid impermeable, gas permeable filter layer over the absorbent layer, a cover layer comprising at least one orifice and a first liquid and gas permeable transmission layer underlying the absorbent layer. The transmission layer is in fluid communication with the filter layer.

A composite wound dressing apparatus promotes healing of a wound via the use of a micropump system housed within or above a wound dressing member. The micropump system includes a miniature pump that applies a subatmospheric pressure to the wound to effectively draw wound fluid or exudate away from the wound bed without the need for a cumbersome external vacuum source. Hence, the wound dressing and micropump system is portable which allows the patient mobility that is unavailable when an external vacuum source is used. The patient does not need to be constrained for any period of time while exudate is being removed from the wound.

Disclosed is an apparatus for the treatment of a wound on a patient. The apparatus is capable of administering localized negative pressure therapy to the wound using a negative pressure source and a drain line for removing exudate from the wound. The apparatus is also capable of administering localized hyperbaric fluid therapy to the wound using a fluid source and a supply line for supplying fluid to the wound.

A disposable absorbent article may include a topsheet, a backsheet, an absorbent core disposed between the topsheet and the backsheet, and a leg gasketing system. The leg gasketing system may include an inner cuff and an outer cuff; the inner cuff may include an inner cuff folded edge and an inner cuff material edge and the outer cuff may include an outer cuff folded edge and an outer cuff material edge such that the web of material is folded laterally inward to form the outer cuff folded edge and folded laterally outward to form the inner cuff material edge.

A method, and apparatus (10) for the controlled acceleration, and / or retardation of the body's inflammatory response generally comprises a foam pad (11) for insertion substantially into a wound site, a heating, a cooling pad (13) for application over the wound site (12), a wound drape (14) or sealing enclosure of the foam pad (11), the heating, and cooling pad (13) at wound site (12). The foam pad (11) is placed in fluid communication with a vacuum source for promotion of the controlled acceleration or retardation of the body's inflammatory response. The heating, and cooling provision controls the local metabolic function as part of the inflammatory response.

Methods and devices for transmitting micromechanical forces locally to induce surface convolutions into tissues on the millimeter to micron scale for promoting wound healing are presented. These convolutions induce a moderate stretching of individual cells, stimulating cellular proliferation and elaboration of natural growth factors without increasing the size of the wound. Micromechanical forces can be applied directly to tissue, through biomolecules or the extracellular matrix. This invention can be used with biosensors, biodegradable materials and drug delivery systems. This invention will also be useful in pre-conditioned tissue-engineering constructs in vitro. Application of this invention will shorten healing times for wounds and reduce the need for invasive surgery.

A wound dressing system includes a fluid permeable support member for positioning within a wound and adapted to generally conform to a topography of a wound, a plurality of beads supported by the support member, an outer member for positioning over the wound to substantially enclose the beads and a conduit for supplying reduced pressure to the wound. The support member is adapted to permit exudates from the wound to pass therethrough. The beads are characterized by having sufficient rigidity to substantially maintain respective shapes thereof to thereby facilitate passage of the exudates through spaces or passages defined between adjacent beads. The beads may comprise glass, an acrylic or a polymeric material. The support member may comprise a polymeric or fabric material. The support member may be an enclosure member or pouch which houses the beads. Multiple pouches are also envisioned.

Devices and methods are provided for transdermal administration of a pharmaceutical agent to a patient in need thereof. The device includes a substrate, a plurality of discrete reservoirs in the substrate, one or more pharmaceutical agents stored in the reservoirs, discrete reservoir caps that prevent the pharmaceutical agent from passing out from the reservoirs until desired, control means for actuating release of the one or more pharmaceutical agents from one or more of the reservoirs by disintegrating or permeabilizing the reservoir caps, means for securing the device to the skin of the patient, and means for transporting the pharmaceutical agent to the skin following release from the one or more of the reservoirs. In another embodiment, the device is adapted for diagnostic sensing instead of or in addition to drug delivery.

A multi layered wound dressing for use on wounds producing high levels of exudate, the dressing comprising a transmission layer having a high MVTR; an absorbent core capable of absorbing and retaining exudates; and a wound contacting layer which transmits exudate to the absorbent core, the absorbent core and wound contacting layer limiting the lateral spread of exudate in the dressing to the region of the wound.

An apparatus includes a pressure housing configured to be coupled to a vacuum source and a diaphragm sealingly coupled to the pressure housing. The diaphragm is configured to move in response to the vacuum source. A magnet is coupled to the diaphragm. A magnetic switch is disposed opposite the magnet and is configured to be actuated by the magnet when the magnet is a predetermined distance from the magnetic switch. The magnetic switch is configured to selectively actuate the vacuum source.

Device for vacuum therapy of wounds comprising a cover material (1) that is impermeable to air, and a means for functional connection of the wound space (4) with a source of vacuum outside the cover material, and at least one activated absorbent / rinsing body (3) that contains at least one superabsorbent polymer.

A method and apparatus for the introduction to a wound under negative pressure therapy of a wound healing agent, generally comprises a foam pad (11) for insertion substantially into a wound site (12), and a wound drape (13) for sealing enclosure of the foam pad at the wound site. The foam pad is placed in fluid communication with a vacuum source for promotion of fluid drainage. Additionally, the foam pad is predisposed, through grafting or other techniques known to those of ordinary skill in the art, with basic fibroblast growth factor (bFGF), anti-microbial or other factors, also known to those of ordinary skill in the art, for the promotion of increased wound healing.

A wound treatment dressing for applying negative pressure wound therapy to a wound of an extremity, such as on the heel of a foot. The dressing comprises a fluid manifold 14 positioned within a fenestrated drape 16 to form a contoured occlusive wrapping 10 for placement over a wound on an extremity. A contoured porous pad 26 is placed adjacent or within the wound, such that the contoured pad 26 is enveloped by the occlusive wrapping 10. Flexible tubing 42 is attached to or through a fluid communication port 18, which forms an opening to the outer layer 16b of the occlusive wrapping 10, so as to allow for fluid communication of negative pressure to the contoured pad 26 from a source of negative pressure 44 connected to an opposite end of the flexible tubing 42. The negative gauge pressure is communicated from the source 44, through the tube 42, through the fenestrations 19 of the occlusive wrapping 10, such that negative gauge pressure is applied to the wound on the extremity. The fluid manifold 14 serves to direct the negative pressure from a position away from the wound site to the contoured pad 26 at the wound site.

The invention relates to a drainage device (100) for the treatment of wounds using reduced pressure, comprising (a) a gas-type wound-covering element (3), which, in the state in contact with the body of the patient, is fastened cohesively at the skin surface around the region of the wound and forms a sealed wound space, remaining between the respective wound and the wound-covering element (3); (b) at least one drainage tube (4), which can be connected to means generating the reduced pressure and can be inserted into the wound space approximately parallel to the wound-covering element (3); and (c) at least one absorption body (2) in the form of at least one layer (7) of a textile section (33), which is interspersed with super-absorbing particles and enclosed in an envelope. Due to the size of the pores of the envelope, the absorbed wound secretions remain within the absorption body (2) and, with that, underneath the wound-covering element (3) until the absorption body is removed from the wound space. An air opening (34) is provided for the wound-covering element (3).