Wound Contact Surface Patents (Class 602/43)
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Patent number: 7988680Abstract: A wound dressing member is provided for use in a vacuum bandage connected to a vacuum source. The wound dressing member is also provided for use with a wound having a wound surface. The wound dressing member includes a wound facing surface adapted to be in contact with and generally conform to the wound surface and a plurality of discrete holes formed in the wound facing surface. The member further includes a port configured to communicate with the vacuum source and with each hole formed in the wound facing surface. The wound dressing member further includes a stand-off having interconnected portions coupled to the wound facing surface and configured to provide a space between the wound facing surface and the wound surface.Type: GrantFiled: February 4, 2005Date of Patent: August 2, 2011Assignee: KCI Medical ResourcesInventors: Jeffrey S. Lockwood, Robert Petrosenko, James R. Risk, Jr.
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Publication number: 20110184327Abstract: A tracheostomy dressing (1) which comprises an integral wound locating device (4) for locating and applying pressure to a healing tracheostomy wound.Type: ApplicationFiled: July 31, 2009Publication date: July 28, 2011Inventors: Malcolm Cameron, Luke Cascarini
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Patent number: 7985195Abstract: A dressing having a flexible sleeve shaped to accommodate a substantially cylindrical body or plant portion, the sleeve having a lining which is substantially non-adherent to the body or plant part being bandaged and having a peripheral securement means which attaches two peripheral portions to each other without those portions being circumferentially adhered to the sleeve portion.Type: GrantFiled: August 25, 2009Date of Patent: July 26, 2011Inventor: Barbara Brooke Jennings-Spring
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Publication number: 20110165221Abstract: A method for treating a wound, and a dressing for wound care management comprising a three-dimensional body of glass-based fibers comprising one or more glass-formers selected from the group consisting of P2O5, SiO2, and B2O3; at least about 25 wt % of the fibers have a diameter between about 200 nm and about 4000 nm, and a length:width aspect ratio of at least about 10. In another form, the glasses are in the form of particles in an ointment or cream applied to a wound. In yet other forms the glasses are employed as fibers formed into sutures for closing a wound, or as particles in a surgical glue for closing a wound.Type: ApplicationFiled: January 6, 2010Publication date: July 7, 2011Applicant: THE CURATORS OF THE UNIVERSITY OF MISSOURIInventors: Steven B. Jung, Delbert E. Day
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Publication number: 20110166492Abstract: An adhesive hydrogel dressing as well as methods of applying the dressing to a patient. The dressing generally comprises an adhesive hydrogel pad, a backing layer, and an adhesive layer on the backing layer facing the hydrogel pad. The adhesive layer and backing layer form a perimeter around the hydrogel pad and hold the hydrogel pad in place on an application surface. A release element is in contact with at least a portion of the edge of the hydrogel pad proximate the area that the hydrogel pad and release liner separate during liner removal.Type: ApplicationFiled: September 23, 2009Publication date: July 7, 2011Inventors: David R. Holm, Scott A. Burton, Robert A. Asmus, Richard L. Jacobson
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Patent number: 7968114Abstract: A device for promoting the clotting of blood comprises a clay material in particle form and a receptacle for containing the clay material. At least a portion of the receptacle is defined by a mesh. Another device comprises a gauze substrate and a clay material disposed on the gauze substrate. Another device is a bandage comprising a substrate, a mesh mounted on the substrate, and particles of a clay material retained in the mesh. A hemostatic sponge comprises a substrate, a hemostatic material disposed on a first surface of the substrate, and a release agent disposed on a second surface of the substrate. The release agent is disposed on the wound-contacting surface of the substrate. When treating a bleeding wound, application of the hemostatic sponge causes at least a portion of the hemostatic material to come into contact with blood through the release agent and through the substrate.Type: GrantFiled: October 30, 2006Date of Patent: June 28, 2011Assignee: Z-Medica CorporationInventors: Raymond J. Huey, Denny Lo, Daniel J. Burns, Giacomo Basadonna, Francis X. Hursey
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Patent number: 7960602Abstract: The present invention provides a multilayer bandage, having a webbing for contacting a wound and a first membrane that has at least one water-insoluble polymer and is water-impervious. The present invention further provides methods for making the multilayer bandage, methods of using the multilayer bandage for accelerated wound healing, and kits having compositions of the present invention.Type: GrantFiled: December 30, 2005Date of Patent: June 14, 2011Assignee: Bayer Innovation GmbHInventors: Axel Thierauf, Iwer Baecker, Andreas Haisch
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Publication number: 20110137222Abstract: A wound healing bandaging kit includes a plurality of bandages, each with a flexible layer having a patient-contacting-surface and an outer surface. The outer surface on one of the bandages in the kit includes visual indicia portraying a neutral or negative message, and the outer surface on one of the bandages in the kit includes visual indicia portraying of a positive message. In the preferred embodiment, the visual indicia of a neutral or negative message includes the graphical image of a person's face with a neutral expression or a frown, and the visual indicia of a positive message includes the graphical image of a person's face with a smile. A method of treating a wound includes the steps of providing a wound healing bandaging kit with a plurality of bandages, one of which portrays a neutral or negative message, and another of which portrays a positive message.Type: ApplicationFiled: December 14, 2010Publication date: June 9, 2011Inventor: Michael A. Masini
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Publication number: 20110130696Abstract: A bandage system capable of being held to an upstanding post attached to a wound site is disclosed. The bandage system includes a flexible retainer portion and a cushion portion. The flexible retainer portion includes at least one aperture through which the upstanding post can be inserted for maintaining the bandage system in a position adjacent to the wound site.Type: ApplicationFiled: November 23, 2010Publication date: June 2, 2011Inventors: Michael H. Fritsch, John H. Fritsch, Josephine M. Fritsch
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Patent number: 7951124Abstract: A wound contact device comprising a permeable material and a wound contact layer having voids extending through the contact layer to a depth in the permeable material. The wound contact layer can comprise a thin sheet or film forming a generally flat and smooth wound contact surface having essentially no discontinuities or gaps. The wound contact layer can comprise a thin sheet of highly calendered fabric forming a wound contact surface having a mean surface roughness in the range of about 0 microns to about 200 microns. In progressive wound healing, an embodiment of the wound contact device having the fabric contact surface is used in earlier healing stages and an embodiment of the wound contact device with film contact surface is used in later healing stages. The wound contact device is particularly useful in wound dressings for use in suction-assisted wound therapy.Type: GrantFiled: July 6, 2007Date of Patent: May 31, 2011Assignee: Boehringer Technologies, LPInventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
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Publication number: 20110105975Abstract: Disclosed are multicomponent fibers derived from a blend of a sulfopolyester with a water non-dispersible polymer wherein the as-spun denier is less than about 6 and wherein the water dispersible sulfopolyester exhibits a melt viscosity of less than 12,000 poise measured at 240° C. at a strain rate of 1 rad/sec, and wherein the sulfopolyester comprising less than about 25 mole % of residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. The multicomponent fiber is capable of being drawn at a relatively high fiber speed, particularly at least about 2000 m/min, and may be used to produce microdenier fibers. Fibrous articles may be produced from the multicomponent fibers and microdenier fibers. Also disclosed is a process for multicomponent fibers, nonwoven fabrics, and microdenier webs.Type: ApplicationFiled: December 22, 2010Publication date: May 5, 2011Applicant: EASTMAN CHEMICAL COMPANYInventors: Rakesh Kumar Gupta, Scott Ellery George, Daniel William Klosiewicz, Kab Sik Seo, Coralie McKenna Fleenor, Allen Lynn Crain
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Tissue spacer for wound treatment employing reduced pressure and method and apparatus employing same
Patent number: 7935858Abstract: A tissue spacer shaped to a general configuration of a projected tissue growth site of a patient for use in conjunction with vacuum suction for medical purposes and reduced pressure device and method employing the same.Type: GrantFiled: August 18, 2008Date of Patent: May 3, 2011Inventor: Daron Carl Praetzel -
Patent number: 7934507Abstract: The present invention comprises a modified woman's undergarment that includes a peri-pubic light compression panel allowing for compression at the incision site and a treatment dressing means for exposing the wound to a medicament. The combination of light compression and treatment with applicable medicament functions to minimize the formation of scars following cesarean section incisions performed in the lower transverse uterine or peri-pubic area. Considering the long phase of wound healing, this design flexibility allows for the use of the garment under a variety of street clothes. Unlike a girdle or abdominal support device, the crux of the invention does not require heavy or high abdominal support, although for those applications requiring girdle-type support, the invention could also be fabricated in a style that allows abdominal support along with the focused incision peri-pubic compression and incision care.Type: GrantFiled: October 4, 2005Date of Patent: May 3, 2011Inventor: Catherine Brooks
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Publication number: 20110092871Abstract: The present invention relates to a wound dressing including an outer layer of air-impermeable material and means for attaching the dressing to the skin surrounding a wound, a pre-compressed body of resilient material, said body creating a sub-pressure after attaching the dressing to a wound. According to the invention the pre-compressed body is enclosed in a casing of air-tight material, whereby at least a portion of said casing is made of a soluble material, which dissolves after contact with liquid exudate.Type: ApplicationFiled: June 16, 2009Publication date: April 21, 2011Applicant: Molnlycke Health Care ABInventors: Tomas Fabo, Ulf Johannison, Dennis Hansson
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Publication number: 20110092870Abstract: Novel compositions, as well as related methods, coatings, and articles, are disclosed.Type: ApplicationFiled: December 21, 2010Publication date: April 21, 2011Applicant: Biolntraface, Inc.Inventor: John D. Jarrell
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Publication number: 20110092869Abstract: Articles having zoned breathability such as personal hygiene articles are provided having controlled regional breathability with high MVTR regions and low MVTR regions. The zoned breathability articles comprise organic acid-modified ionomer resins.Type: ApplicationFiled: October 15, 2010Publication date: April 21, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: John Chu Chen, Donna Lynn Visioli
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Patent number: 7928279Abstract: A pad for the treatment of inflammatory afflictions, which comprise an absorbing matrix, a medicament that is a hypertonic substance such as inorganic salt solutions, and a functional backing for directing and limiting the activity of the medicament to the desired body surface. The pad may further comprise binding means for maintaining it in place and in engagement with the desired body surface. The absorbing matrix and the functional backing may be structurally connected or separate. The absorbing matrix may be made of cotton, lignin cellulose or synthetic absorbing materials.Type: GrantFiled: January 25, 2001Date of Patent: April 19, 2011Inventor: Lior Rosenberg
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Publication number: 20110077571Abstract: The present invention relates to a wound dressing including a first wound pad and a first cover layer covering the first wound pad and extending beyond the first wound pad around the circumference thereof. According to the invention a second wound pad is disposed outside the first cover layer and enclosed in a second cover layer. Furthermore, the first and second wound pads are connected to each other by liquid transferring means.Type: ApplicationFiled: May 18, 2009Publication date: March 31, 2011Applicant: MOLNLYCKE HEALTH CARE ABInventor: Angelica Andresen
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Patent number: 7910791Abstract: A wound care bandage for treating a wound is provided. The bandage includes an SIS layer to be placed on the wound surface and a cover to placed over the wound. Illustratively, the bandage further includes a structure to provide a vacuum space. A method for promoting wound healing is further provided. The method includes applying the above-mentioned wound care bandage to the wound and creating a vacuum in the vacuum space to draw blood controllably from the wound into the SIS layer.Type: GrantFiled: May 15, 2001Date of Patent: March 22, 2011Inventor: Arthur C. Coffey
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Patent number: 7910789Abstract: A method of treating a wound using a customized dressing. In the method, at least one wound characteristic is evaluated. A treatment need as a function of the at least one wound characteristic is determined. A dressing having a dressing characteristic responsive to the treatment need is fabricated and applied to the wound. A dressing for use therewith and an apparatus and system for fabricating the dressing are provided.Type: GrantFiled: May 7, 2003Date of Patent: March 22, 2011Assignee: PolyRemedy, Inc.Inventor: Dmitriy Sinyagin
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Publication number: 20110066123Abstract: According to an illustrative embodiment, a system for treating a wound at a tissue site of a patient comprising a reduced-pressure source to supply reduced pressure, a drape adhering to the tissue site to cover the wound where possible leak passages between the drape and the tissue site may occur, and a seal disposed between the drape and the tissue site, is disclosed. The seal is adapted to react with a fluid to form a sealant substantially filling the passages in response to air leaking through the passages from outside the drape when reduced pressure is applied to the wound. According to another illustrative embodiment, a method for sealing a drape to a tissue site for treating a wound at the tissue site comprising applying the drape to cover the tissue site whereby passages are formed between the drape and the tissue site, positioning a seal between the drape and the tissue site wherein the seal is adapted to react with a fluid to form a sealant for substantially filling the passages, is also disclosed.Type: ApplicationFiled: August 27, 2010Publication date: March 17, 2011Inventors: Aidan Marcus Tout, Timothy Mark Robinson
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Publication number: 20110054374Abstract: An improved post-operative dressing for providing both breast and, notably, nipple reconstruction and which in particular establishes custom lateral supporting of the nipple annulus. A body is constructed of a medical grade silicone and exhibits a three dimensional shape adapted for placement over the reconstructed breast and an aperture defined by an inner rim configured within the body is adapted to seat therethrough an associated nipple graft in a laterally supporting and non-pressure applied fashion. A number of secondary advantages incorporated into the body include each of apertures for breathability, suction/adherence properties, and impregnation or entrainment within the body inner surface of any form of anti-infection medicine.Type: ApplicationFiled: August 27, 2010Publication date: March 3, 2011Inventors: Julie Hyde-Edwards, Miguel A. Linares
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Publication number: 20110046715Abstract: Auxetic fabric structures, of the sort which can be useful in conjunction with composite materials, and related methods of fabrication.Type: ApplicationFiled: June 23, 2008Publication date: February 24, 2011Inventors: Samuel C. Ugbolue, Yong K. Kim, Steven B. Warner, Qinguo Fan, Chen-Lu Yang, Olena Kyzymchuk
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Patent number: 7888546Abstract: An adhesive device used as a wound dressing, ingredient delivery device or IV hold-down in which inadvertent edge release of these devices along the periphery of the polymeric film layer is minimized when the handling layer, which is adhered to the polymeric film layer, is removed after application of the polymeric film layer to the patient.Type: GrantFiled: July 2, 2004Date of Patent: February 15, 2011Assignee: Corium International, Inc.Inventors: Michael G. Marcoux, David R. Johnson, Steven R. Klemm
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Patent number: 7884258Abstract: A therapeutic device for promoting the healing of a wound in a mammal is disclosed. An exemplary device comprises a permeable structure having a plurality of depressions formed in a surface thereof. In use, the surface having the depressions is disposed adjacent a surface of the wound. A method of treating a wound comprises the steps of providing a permeable structure comprising a plurality of randomly disposed fibers and having i) a plurality of wound surface contact elements disposed between end portions of the structure, and ii) a plurality of voids defined by the contact elements; and applying the permeable structure to at least one surface of the wound.Type: GrantFiled: November 5, 2004Date of Patent: February 8, 2011Assignee: Boehringer Technologies, L.P.Inventors: John R. Boehringer, John Karpowicz, Amitabha Mitra, Christopher L. Radl
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Patent number: 7880050Abstract: A breathable interface system including an applicator having an aperture therethrough; a drape substantially covering the applicator; a first pad section located between the drape and the applicator; a second pad section substantially covering the aperture and located between the drape and the applicator, the second pad section substantially adjacent to the first pad section; and a fabric layer located at least partially between the second pad section and the drape; and a reduced pressure conduit in communication with one of the first pad section and the fabric layer for providing reduced pressure to the aperture; wherein the drape is secured to the applicator, covering the first pad section, the second pad section, and the fabric layer in a substantially sealed environment.Type: GrantFiled: February 8, 2008Date of Patent: February 1, 2011Assignee: KCI Licensing, Inc.Inventors: Timothy Mark Robinson, Christopher Brian Locke
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Publication number: 20110015556Abstract: A stiffening layer (4) for facilitating application of a plastic film (2) to skin, the plastic film being a component in a wound dressing (1) or other medical device and having the stiffening layer (4) removably attached to one side thereof, at least a part of the other side of the film being provided with a layer of self-adhering adhesive (3). The stiffening layer (4) is made of a stretchable material having a thickness of between 0.5-10 mm. The stiffening layer covers the whole area of the film and is divided into two or more portions by cutting line or lines.Type: ApplicationFiled: February 6, 2009Publication date: January 20, 2011Applicant: MOLNLYCKE HEALTH CARE ABInventors: Tomas Fabo, Anna Svensby
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Publication number: 20100331751Abstract: An improved burn glove and sock is presented comprised of non-biological materials produced with a series of regularly-spaced pores and uniform three dimensional nylon structure/weave netting. Incorporated into the silicone/nylon weave structure are collagen peptides and other biological and non-biological agents selected for their therapeutic effect on burn wounds. The gloves and sock come in left and right shapes, the gloves with opposable thumbs, an advance for the burn glove industry. The items are assembled from state-of-the-art skin substitute material in use for burn and wound dressings.Type: ApplicationFiled: June 28, 2009Publication date: December 30, 2010Inventors: E. Aubrey Woodroof, Amy Moss, Victoria Vandenberg, Karla Alvey
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Patent number: 7858835Abstract: Methods for producing biocompatible compositions are provided. The biocompatible compositions include an isocyanate-functional polyurethane prepolymer in combination with a foam control agent. The foam control agent decreases the formation of bubbles and/or foam in the biocompatible composition, thereby enhancing the physical properties of the biocompatible composition. The presence of the foam control agent does not compromise the strength of the biocompatible composition. The compositions prepared by the methods of the present disclosure may be used as adhesives or sealants for medical/surgical uses.Type: GrantFiled: June 27, 2007Date of Patent: December 28, 2010Assignee: Tyco Healthcare Group LPInventors: Ferass Abuzaina, Fatima Munoz
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Patent number: 7858838Abstract: A wound dressing comprising a dressing support layer configured to retain and deliver the wound dressing to a wound, the dressing support layer having a radial configuration that forms a plurality of alternating covered and uncovered portions of the backing layer along the perimeter of the wound dressing.Type: GrantFiled: August 10, 2006Date of Patent: December 28, 2010Assignee: 3M Innovative Properties CompanyInventors: David R. Holm, Richard L. Jacobson, Donald H. Lucast
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Publication number: 20100324464Abstract: A wound-covering hydrogel material which has excellent stretchability and absorbs exudates from wounds. It can maintain over long a wet environment which is suitable for accelerating the healing of wounds. There is no fear of causing pain or damaging the regenerated skin when the wound-covering hydrogel material is replaced with a fresh one. The wound-covering hydrogel material prepared by spreading a hydrogel comprising a water-soluble semi-synthetic polymer, glycerol and water, on a laminated two-layer film composed of a polyurethane film and hydrophobic fibers. The covering material has a moisture permeability as measured by the cup method in accordance with JIS Z0208 of 500-2,000 (g/m2/24 h).Type: ApplicationFiled: February 25, 2008Publication date: December 23, 2010Inventors: Takashi Kamakura, Aki Sato, Makoto Takahashi, Takehiko Ohura
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Publication number: 20100318012Abstract: The present invention relates to a bacteriostatic textile material of polyamide 11 where said polyamide 11 has an inherent viscosity of from 0.5 to 1.7 and contains no impurities with a diameter greater than 5 ?m. The bacteriostatic textile material is useful in the fields of medicine, hygiene, baggage, clothing manufacture, clothing, household equipment and goods, upholstery, carpets, automobiles, industry, notably industrial filtration, agriculture and/or building construction.Type: ApplicationFiled: June 15, 2010Publication date: December 16, 2010Applicant: Arkema FranceInventor: Sophie CHHUN
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Publication number: 20100305489Abstract: The invention relates to a medical material, especially to a hemostatic and wound-healing water-soluble chitosan-based fiber material. The water-soluble chitosan-based fiber material comprises carboxymethyl chitosan fiber, hydroxypropyl chitosan fiber, hydroxyethyl chitosan fiber, carboxymethyl hydroxyethyl chitosan fiber or mixtures thereof.Type: ApplicationFiled: March 31, 2008Publication date: December 2, 2010Inventors: Wanshun Liu, Baoqin Han, Gisheng Gu
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Publication number: 20100305490Abstract: A reduced pressure dressing for applying reduced pressure treatment to a tissue site includes an interface layer adapted to be positioned at the tissue site. An absorbent layer is in fluid communication with the interface layer to absorb liquid from at least one of the interface layer and the tissue site. A non-motor-driven pump is in fluid communication with the absorbent layer to deliver a reduced pressure to the tissue site. A cover is positioned over the non-motor-driven pump, the absorbent layer, and the interface layer to maintain the reduced pressure at the tissue site, and a liquid-air separator is positioned between the absorbent layer and the non-motor-driven pump to inhibit liquid from entering the non-motor-driven pump.Type: ApplicationFiled: June 28, 2010Publication date: December 2, 2010Inventors: Richard Daniel John Coulthard, Christopher Drian Locke, Timothy Mark Robinson, Alden Marcus Tout
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Publication number: 20100303890Abstract: Disclosed is a polymer having an affinity for corneal cells such that it can be used as a substrate for the growth of corneal cells, and so is suitable for use in a corneal bandage, especially in the form of a contact lens in which at least the cornea contacting surface is composed of the polymer. The substrate with an affinity for corneal cells is a copolymer comprising units -(A)- and -(B)- in which the units A are derived from aminoalkyl (alkyl)acrylates and the units B are derived from aryloxy, alkoxy or hydroxyalkyl (alkyl)acrylates, and (alkyl)acrylic acids.Type: ApplicationFiled: October 12, 2007Publication date: December 2, 2010Applicants: University of Southampton, The University Court of the University of EdinburghInventors: Guilhem Tourniaire, Mark Bradley, Albert Liberski
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Patent number: 7834232Abstract: A method for applying pressure to skin with a dressing. The method including adhering at least a portion of the dressing to the skin and changing the shape of the dressing after application of the dressing to the skin wherein the changed shape applies pressure to the skin. The changing can include releasing a member from the dressing to allow the dressing to change the shape of the dressing; deforming at least a portion of the dressing to change the shape of the dressing or allowing the dressing to heat to above a transition temperature at which the dressing changes shape.Type: GrantFiled: December 3, 2007Date of Patent: November 16, 2010Assignee: Omnitek Partners LLCInventors: Jahangir S. Rastegar, Thomas Spinelli
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Publication number: 20100286582Abstract: A bandage comprising a substrate having a first surface with a plurality of superhydrophobic particles attached to the first surface. The plurality of superhydrophobic particles can be porous diatomaceous earth particles having a hydrophobic layer conforming to the surfaces of the DE particles, where the hydrophobic layer is bound to the DE particles. The plurality of attached superhydrophobic particles can render the first surface superhydrophobic, while a second surface opposite the first surface can be hydrophilic or hydrophobic. The substrate can be breathable in order to maintain skin health for the tissue underlying the bandage. The substrate can be selected from porous films, apertured films, textiles, nonwoven materials, impregnated composites thereof, and combinations thereof.Type: ApplicationFiled: November 19, 2008Publication date: November 11, 2010Inventors: JOHN T. SIMPSON, BRIAN R. D'URSO
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Publication number: 20100286791Abstract: Provided are methods and apparatus for the use of magnetic traction to maintain the patency of a tubular anatomical structure, whether a vessel, duct, the trachea, bronchus, bile duct, ureter, vas deferens, fallopian tube, or portions of the digestive tract, as to constitute means for extraluminal stenting. An extraluminal stent consists of a perimedial or medial intravascular and an extravascular component. The intravascular component consists of ferromagnetic spherules implanted aeroballistically or stays implanted by means of a special hand tool, while the extravascular component consists of a pliant jacket or mantle that has magnets mounted about its outer surface.Type: ApplicationFiled: November 19, 2007Publication date: November 11, 2010Inventor: David S. Goldsmith
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Publication number: 20100274167Abstract: An apparatus for cleansing and applying therapy or prophylaxis to wounds, in which irrigant fluid containing a physiologically active material from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing and a means for fluid cleansing and back to the dressing. A biodegradable scaffold underlies the dressing on the wound bed to promote tissue growth. The cleansing means (which may be a single-phase, e.g. micro-filtration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The dressing, an assembly comprising the dressing and scaffold, and a method of treatment using the apparatus.Type: ApplicationFiled: April 16, 2010Publication date: October 28, 2010Applicant: Smith & Nephew PLCInventor: Robin Paul Martin
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Patent number: 7820872Abstract: A chitosan biomaterial is frozen in aqueous solution to form a frozen chitosan structure from which water is removed by a prescribed freeze-drying process to form a sponge-like chitosan structure having a thickness and a density. The sponge-like chitosan structure is compressed by application of heat and pressure to reduce the thickness and increase the density of the sponge-like chitosan structure to form a densified chitosan structure. The densified chitosan structure is further preconditioned by heating the densified chitosan structure according to prescribed conditions to form a wound dressing. The wound dressing possesses an adhesion strength and resistance to dissolution in high blood flow bleeding situations.Type: GrantFiled: October 31, 2007Date of Patent: October 26, 2010Assignee: Providence Health System-OregonInventors: Kenton W Gregory, Simon McCarthy
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Publication number: 20100268111Abstract: Systems and techniques for monitoring hydration. In one implementation, a method includes measuring an electrical impedance of a region of a subject to generate an impedance measurement result, and wirelessly transmitting the data to a remote apparatus. The probe with which impedance is measured may in the form of a patch adhesively secured to the subject.Type: ApplicationFiled: June 30, 2010Publication date: October 21, 2010Applicant: PhiloMetron, Inc.Inventors: Darrel D. Drinan, Carl F. Edman
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Patent number: 7815932Abstract: To provide a patch containing fentanyl for mucous membrane of the oral cavity (oral transmucosal fentanyl), which rapidly increases the serum concentration of the drug, is easy in handling and is superior in safety. The patch can be prepared by laminating on one side of a drug layer which contains fentanyl or its salt as an active ingredient, methyl vinyl ether-maleic anhydride copolymer as an adhesive, and at least one substance selected from the group consisting of hydroxypropylcellulose, hydroxypropylmethylcellulose and hydroxyethylcellulose as a thickener, a support layer hardly soluble or insoluble in water, and a backing in this order.Type: GrantFiled: June 1, 2004Date of Patent: October 19, 2010Assignee: Teikoku Seiyaku Co., Ltd.Inventors: Katsumi Ihara, Mitsuhiro Nagata, Sayoko Inazuki
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Patent number: 7812212Abstract: A self-adherent window dressing includes a fabric layer bounded by an edge. The fabric layer has an adhesive side, an opposite non-adhesive side, and an opening therein to allow for viewing therethrough. The opening is defined by a peripheral edge. A transparent film layer closes the opening and has first and second opposing sides. The film layer first side is non-adhesive and is mounted on the fabric layer adhesive side to close the opening in the fabric layer. The film layer second side has a skin adhering adhesive portion and an adhesive-free portion. The adhesive-free portion is disposed partially in the opening and extending beyond the peripheral edge of the opening. The film layer adhesive-free portion is adapted not to stick to a patient's skin, a connector, a catheter, or other medical device disposed between the film layer adhesive-free portion and skin.Type: GrantFiled: February 7, 2008Date of Patent: October 12, 2010Assignee: Centurion Medical Products CorporationInventors: Donald J. Propp, Curtis L. Carpenter
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Publication number: 20100256545Abstract: The present invention provides systems and methods for protecting a wound and managing exudate released from the wound comprising a dressing having a support cushion for surrounding the wound and periwound region; a wicking strip for application in the periwound region between the support cushion and the wound; and a reservoir for application over the wicking strip, the wicking strip configured to transfer exudate from the wound to the reservoir, where the exudate is sequestered. Various alternative embodiments are described in which the wicking strip may be custom-fit to approximate an irregular wound margin, to apply a preferred pressure gradient to the periwound regions, to periodically apply fluids to the wound bed or to apply negative pressure wound therapy. Methods of applying the dressing also are provided.Type: ApplicationFiled: April 1, 2009Publication date: October 7, 2010Inventors: Adel Aali, Raymond Barbuto
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Publication number: 20100249688Abstract: A multi-layer reduced pressure delivery apparatus is provided for applying reduced pressure tissue treatment to a tissue site. The multi-layer apparatus includes a tissue contact layer, a release layer, and a manifold layer. The tissue contact layer includes a scaffold adapted to contact the tissue site, the release layer includes a water-soluble polymer and a plurality of flow channels, and the manifold layer includes a distribution manifold. The release layer is positioned between the tissue contact layer and the manifold layer to allow easy release of the manifold layer from the tissue contact layer following the administration of reduced pressure tissue treatment.Type: ApplicationFiled: April 12, 2010Publication date: September 30, 2010Inventors: ARCHEL AMBROSIO, ROYCE W. JOHNSON
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Patent number: 7803980Abstract: A multi layered wound dressing which comprises an adhesive layer, an absorbent layer overlying said adhesive layer on the surface furthest from the wound, and a moisture transmitting cover layer overlying the absorbent layer, the dressing having a total thickness of less than 1.5 mm.Type: GrantFiled: July 1, 2004Date of Patent: September 28, 2010Assignee: ConvaTec Technologies Inc.Inventors: Bryan Griffiths, David C. Pritchard, Elizabeth Jacques, Steven M. Bishop, Michael Lydon
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Patent number: 7799965Abstract: A wound dressing includes one or more layers containing a first anti-microbial agent and/or at least one zinc-containing agent.Type: GrantFiled: April 11, 2007Date of Patent: September 21, 2010Assignee: Tyco Healthcare Group LPInventors: Harish A. Patel, Hansen P. Swaniker, David G. Heagle, Kate Ward, Alain Tranchemontagne, E. David Fink, Ronald F. Vitaris, Chirag B. Shah, Sharon A. Mulligan, Brian Dowd, Scott Orr
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Patent number: 7794450Abstract: An apparatus for cleansing and promoting tissue growth in wounds, in which irrigant fluid optionally containing cell nutrients and/or other physiologically active material from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing, a biodegradable scaffold in contact with the wound bed and a means for fluid cleansing and back to the dressing. The apparatus has means for supplying thermal energy to the fluid in the wound. The cleansing means (which may be a single-phase, e.g. micro-filtration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The dressing and a method of treatment using the apparatus.Type: GrantFiled: October 28, 2004Date of Patent: September 14, 2010Assignee: Smith & Nephew PLCInventors: Patrick Lewis Blott, Bryan Greener, Edward Yerbury Hartwell, Julian Lee-Webb, Derek Nicolini, Clare Green, Robin Paul Martin
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Patent number: 7794219Abstract: An electrospinning device for generating a coat from a liquefied polymer, the device comprising: (a) a dispenser for dispensing the liquefied polymer; (b) a cavity having a longitudinal axis, comprising a first system of electrodes; the dispenser and the first system of electrodes being constructed and design such that the liquefied polymer is dispensed from the dispenser and forms a plurality of polymer fibers moving along the longitudinal axis; and (c) a mechanism for relocating the polymer fibers out of the cavity, in a direction of an object, so as to generate a coat on the object.Type: GrantFiled: March 19, 2002Date of Patent: September 14, 2010Assignee: Nicast Ltd.Inventors: Alexander Dubson, Eli Bar
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Patent number: 7790945Abstract: A wound dressing having a suction member adaptable for connection to a source of vacuum pressure. The wound dressing preferably has a hydrophobic or biodegradable base layer and one or more absorptive layers for absorbing fluid from the wound. The absorptive layers are preferably quilted with patches containing desiccant, adsorbent, or absorbent material. Alternatively, the wound dressing may allow fluid to pass through the suction member. A semi-permeable cover is provided for allowing the wound to breathe while protecting the wound from undesirable substances such as bacteria, viruses, or fluids. The cover may have a bladder for distributing contact pressure away from the wound. Various sensors may be provided in the wound dressing for sensing various physiological parameters in the wound, such as oxygen saturation, blood pressure, respiratory rate, blood glucose, and serous fluid turbidity. Medicine may also be applied to the wound through the wound dressing.Type: GrantFiled: April 5, 2004Date of Patent: September 7, 2010Assignee: KCI Licensing, Inc.Inventor: Richard L. Watson, Jr.