Film-forming Bandage Material Patents (Class 602/904)
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Patent number: 6685682Abstract: A carrier delivered dressing which has a conformable backing with a pressure sensitive adhesive coated on a bottom face and a low adhesion coating on a top face. The backing is supported during shipping and handling by a liner attached to the adhesive and a removable heat sealed carrier attached to the top face of the backing. The method according to the present invention discloses the steps of forming and optionally removing windows in a carrier material and nonpermanently heat sealing the carrier to the backing to form the dressings of the present invention.Type: GrantFiled: October 26, 1999Date of Patent: February 3, 2004Assignee: 3M Innovative Properties CompanyInventors: Steven B. Heinecke, Donald G. Peterson
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Patent number: 6630215Abstract: A medical material and a medical device comprising an aromatic vinyl compound/&agr;-olefin random copolymer according to the present invention, are materials which contain substantially no chlorine and which have not only excellent flexibility, transparency and proper resilience but also radiation resistance and biocompatibility, and they are hence advantageously used especially in the medical field.Type: GrantFiled: September 7, 2000Date of Patent: October 7, 2003Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Takeshi Oda, Yukiko Nishitoba, Toru Arai, Akio Okamoto, Toshiaki Otsu
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Patent number: 6471985Abstract: In one embodiment, the present invention relates to a method of treating a wound, involving applying to the wound a room temperature vulcanizing silicone composition comprising a crosslinkable polymer, a crosslinking agent, and a catalyst; permitting the room temperature vulcanizing silicon composition to cure thereby forming a membrane having a thickness from about 0.1 mm to about 5 mm; and removing the membrane from the wound after at least about 1 day.Type: GrantFiled: June 4, 1999Date of Patent: October 29, 2002Inventors: Bahman Guyuron, Michael Doliveck
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Patent number: 6387977Abstract: An impoved barrier or drug delivery system which is highly adherent to the surface to which it is applied is disclosed, along with methods for making the barrier. In the preferred embodiment, tissue is stained with a photoinitiator, then the polymer solution or gel having added thereto a defined amount of the same or a different photoinitiator is applied to the tissue. On exposure to light, the resulting system polymerizes at the surface, giving excellent adherence, and also forms a gel in the rest of the applied volume. Thus a gel barrier of arbitrary thickness can be applied to a surface while maintaining high adherence at the interface. This process is referred to herein as “priming”. The polymerizable barrier materials are highly useful for sealing tissue surfaces and junctions against leaks of fluids. In another embodiment, “priming” can be used to reliably adhere preformed barriers to tissue or other surfaces, or to adhere tissue surfaces to each other.Type: GrantFiled: July 14, 2000Date of Patent: May 14, 2002Assignees: Focal, Inc., Board of Regents, The University of Texas SystemInventors: Amarpreet S. Sawhney, David A. Melanson, Chandrashekar P. Pathak, Jeffrey A. Hubbell, Luis Z. Avila, Mark T. Kieras, Stephen D. Goodrich, Shikha P. Barman, Arthur J. Coury, Ronald S. Rudowsky, Douglas J. K. Weaver, Marc A. Levine, John C. Spiridigliozzi, Thomas S. Bromander, Dean M. Pichon, George Selecman, David J. Nedder, Bradley C. Poff, Donald L. Elbert
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Patent number: 6326025Abstract: The present invention is directed to a biocompatible tissue reactive composition comprising a functionalized polymer having tissue reactive substituents that are capable of forming covalent bonds with tissue associated functional groups.Type: GrantFiled: April 24, 2000Date of Patent: December 4, 2001Assignee: DePuy Orthopaedics, IncInventors: Gerry Sigler, Z. David Deng, Dale R. Peterson, Todd P. Glancy, Samuel I. Stupp
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Patent number: 6010716Abstract: The invention concerns a pharmaceutical composition for transdermal administration, characterized in that it comprises:a) optionally, a polymeric release matrix capable of forming a flexible film after drying, chosen from cellulose polymers or copolymers or vinylpyrrolidone/vinyl acetate copolymersb) an active principlec) a promoter of transcutaneous absorption of the active principled) a physiologically acceptable non-aqueous solvent capable of dissolving the release matrix, the active principle and the transcutaneous absorption promoter and also capable of being rapidly removed by evaporation on contact with the skin.Type: GrantFiled: December 3, 1997Date of Patent: January 4, 2000Assignee: SanofiInventors: Henry Saunal, Brigitte Illel
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Patent number: 5830526Abstract: A substrate such as a woven or nonwoven fabric bound with a light-activated dye alone or in combination with additional conventional antimicrobial agents. The substrate is impregnated with a light-activated non-leachable dye having antimicrobial and/or antiviral characteristics which can be imparted to the substrate. The dye is bound by a cationic or anionic binder such as a water soluble polymer or carrageenan. Upon exposure to normal light, the dye generates singlet oxygen that kills microorganisms and viruses.Type: GrantFiled: February 19, 1997Date of Patent: November 3, 1998Assignee: FiberMark, Inc.Inventors: John E. Wilson, Christopher Bull
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Patent number: 5800373Abstract: An improved barrier or drug delivery system which is highly adherent to the surface to which it is applied is disclosed, along with methods for making for making the barrier. In the preferred embodiment, tissue is stained with a photoinitiator, then the polymer solution or gel having added thereto a defined amount of the same or a different photoinitator is applied to the tissue. On exposure to light, the resulting system polymerizes at the surface, giving excellent adherence, and also forms a gel in the rest of the applied volume. Thus a gel barrier of arbitrary thickness can be applied to a surface while maintaining high adherence at the interface. This process is referred to herein as "priming". The polymerizable barrier materials are highly useful for sealing tissue surfaces and junctions against leaks of fluids. In another embodiment, "priming" can be used to reliably adhere preformed barriers to tissue or other surfaces, or to adhere tissue surfaces to each other.Type: GrantFiled: March 23, 1995Date of Patent: September 1, 1998Assignee: Focal, Inc.Inventors: David A. Melanson, Amarpreet S. Sawhney, Marc Alan Levine, John C. Spiridigliozzi, Thomas S. Bromander
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Patent number: 5795584Abstract: Surgical adhesion barriers and methods of using such surgical adhesion barriers are provided. Surgical adhesion barriers according to the present invention have at least one layer of a bioabsorbable material comprising copolymers and/or block copolymers derived from trimethylene carbonate. Alternatively, a multilayer surgical structure having one or more bioabsorbable layers superimposed on a non-absorbable layer is useful for minimizing or preventing formation of fibrous adhesions between a healing trauma site and adjacent surrounding tissue. Alternatively, a bioabsorbable non-woven fabric in adherent contact with at least one bioabsorbable layer of foam, film, mesh, web or woven fabric is also provided. One or more medicinal agents may be interposed between or disposed within any of the aforementioned layers.Type: GrantFiled: February 7, 1995Date of Patent: August 18, 1998Assignee: United States Surgical CorporationInventors: Nagabhushanam Totakura, Ross R. Muth, Roy D. Gravener, Matthew Hain, Ilya S. Koyfman
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Patent number: 5791352Abstract: Tissue adhesions are inhibited by applying and immobilizing a solid preformed matrix material over a target region, such as a surgical site, in a first tissue surface. The matrix material may be any continuous solid material, such as a sheet or film. After applying the material to the target region, the material is immobilized by applying energy over at least a portion of the surface of the matrix material which causes the material to fuse to the underlying tissue. The matrix material is preferably bioabsorbable so that it is resorbed by the body over time. Suitable matrix materials include proteins, polysaccharrides, and synthetic polymers.Type: GrantFiled: November 8, 1996Date of Patent: August 11, 1998Assignee: Fusion Medical Technologies, Inc.Inventors: Cary J. Reich, Donald Wallace, Greg Dapper
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Patent number: 5786421Abstract: Collagen-based compositions useful in the attachment of tissues, or the attachment of tissues to synthetic implant materials, are disclosed. The compositions comprise collagen crosslinked using a multifunctionally activated synthetic hydrophilic polymer. A particularly preferred composition comprises fibrillar collagen, a fiber disassembly agent, and a multifunctionally activated synthetic hydrophilic polymer. Methods are disclosed for using the compositions to effect the attachment of a native tissue to the surface of another native tissue, a non-native tissue, or a synthetic implant. Also disclosed are methods of using the compositions to prevent the formation of surgical adhesions.Type: GrantFiled: May 6, 1997Date of Patent: July 28, 1998Assignee: Cohesion Technologies, Inc.Inventors: Woonza M. Rhee, Prema R. Rao, George H. Chu, Frank A. DeLustro, Carol F. H. Harner, Naomi Sakai, Jacqueline A. Schroeder
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Patent number: 5725491Abstract: The invention is directed to a biodegradable film dressing with or without additional therapeutic agents, an apparatus for spray delivery and a method for formation of the film dressing on a human or animal tissue. The film dressing is formed from a liquid composition of at least one biodegradable/bioerodible thermoplastic polymer such as polylactides, polyglycolides, polycaprolactones or copolymers thereof in a pharmaceutically acceptable solvent such as N-methylpyrrolidone, alcohols or alkyl esters. The spray apparatus includes a vessel containing the liquid composition with a dispensing means. The film is formed by dispensing, preferably by spraying, the liquid composition onto a tissue site and contacting the liquid composition with an aqueous based fluid such as water, saline solution or body fluid to coagulate or solidify the film onto the human or animal tissue.Type: GrantFiled: November 8, 1994Date of Patent: March 10, 1998Assignee: Atrix Laboratories, Inc.Inventors: Arthur J. Tipton, Shawn M. Fujita, Richard L. Dunn
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Patent number: 5717030Abstract: A medical device which is a surgically implantable device coated with an adjunctive polymer system. The adjunctive polymer system forms a solid matrix when introduced into a human or animal body. The adjunctive polymer system can contain a drug or a medicament which is released over time from the solid matrix. The adjunctive polymer system contacts body tissue into which the surgically implantable device is implanted.Type: GrantFiled: December 6, 1996Date of Patent: February 10, 1998Assignee: Atrix Laboratories, Inc.Inventors: Richard L. Dunn, Gerald L. Yewey, Jeffrey L. Southard, John E. Urheim
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Patent number: 5707647Abstract: A medical device which is a surgically implantable device coated with an adjunctive polymer system. The adjunctive polymer system forms a solid matrix when introduced into a human or animal body. The adjunctive polymer system can contain a drug or a medicament which is released over time from the solid matrix. The adjunctive polymer system contacts body tissue into which the surgically implantable device is implanted.Type: GrantFiled: November 14, 1996Date of Patent: January 13, 1998Assignee: Atrix Laboratories, Inc.Inventors: Richard L. Dunn, Gerald L. Yewey, Jeffrey L. Southard, John E. Urheim
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Patent number: 5632727Abstract: The invention is directed to a biodegradable film dressing with or without additional therapeutic agents, an apparatus for spray delivery and a method for formation of the film dressing on a human or animal tissue. The film dressing is formed from a liquid composition of at least one biodegradable/bioerodible thermoplastic polymer in a pharmaceutically acceptable solvent. The spray apparatus includes a vessel containing the liquid composition with a dispensing means. The film is formed by dispensing, preferably by spraying, the liquid composition onto a tissue site and contacting the liquid composition with an aqueous based fluid to coagulate or solidify the film onto the human or animal tissue. The biodegradable film can be used to protect and to promote healing of injured tissue and/or to deliver biologically active agents.Type: GrantFiled: June 7, 1995Date of Patent: May 27, 1997Assignee: Atrix Laboratories, Inc.Inventors: Arthur J. Tipton, Shawn M. Fujita, Richard L. Dunn
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Patent number: 5578046Abstract: The present invention relates to composite materials having a core portion formed from a first bioabsorbable material and at least one shell portion of a second bioabsorbable material joined to the core portion. The first and second bioabsorbable materials have different rates of bioabsorption. In a preferred embodiment, the core portion is coextruded with the shell portion to form a composite filament or sheet. The materials of the present invention may be used as sutures or formed into medical devices or surgical articles for implantation within a living organism.Type: GrantFiled: May 12, 1995Date of Patent: November 26, 1996Assignee: United States Surgical CorporationInventors: Cheng-Kung Liu, Ying Jiang, Mark S. Roby, Steven L. Bennett, Richard P. Stevenson, Jeffrey P. Pietrangeli
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Patent number: 5575995Abstract: Lesions surgically or otherwise induced on living tissue are treated by applying to the tissue a gel containing a water solution of ferric subsulfate, glycerin to thicken the solution and polyvinyl pyrrolidone as a film forming material.Type: GrantFiled: June 6, 1995Date of Patent: November 19, 1996Inventor: Richard L. Giovanoni
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Patent number: 5432009Abstract: A film for a first-aid sticking plaster consisting of polypropylene resin having a weight average molecular weight within a range of 80,000 to 500,000, with resin elution quantities according to cross fractionation chromatograph in ranges of 45 to 80 percent by weight at 0.degree. to 10.degree. C., 5 to 35 percent by weight at 10.degree. to 70.degree. C., 1 to 30 percent by weight at 70.degree. to 95.degree. C., and 5 to 35 percent by weight at 95.degree. to 125.degree. C.Type: GrantFiled: June 14, 1994Date of Patent: July 11, 1995Assignee: Sekisui Kagaku Kogyo Kabushiki KaishaInventors: Hironori Tabata, Masao Ogasa, Kiyomi Uenomachi, Hideshi Matsumoto
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Patent number: 5409903Abstract: A method of treating a mammal for the presence or the activity of H. pylori in the gastrointestinal tract is disclosed. The method encompasses orally administering to said mammal a sufficient amount of a scavenging, reacting or inactivating compound to remove bicarbonate ions, ammonium ions or urea which are present in combination with the microorganisms which colonize and infect the gastric mucosa. Such microorganisms have been implicated in gastritis, gastric ulcer disease and as a risk factor in gastric carcinoma.Also, the invention encompasses a method, utilizing similar compounds, for the treatment or prevention of dermatitis such as diaper rash wherein these compounds are preapplied to the skin or used to treat the diaper prior to use.Also included are compositions which are used for the methods described above.Type: GrantFiled: February 18, 1992Date of Patent: April 25, 1995Assignee: Urecap CorporationInventors: Robert B. Polak, Attallah Kappas
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Patent number: 5306490Abstract: A cyanoacrylate adhesive is applied to the skin areas prone to blistering prior to blister formation.Type: GrantFiled: April 20, 1992Date of Patent: April 26, 1994Assignee: Medlogic, Inc.Inventor: Leonard V. Barley, Jr.
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Patent number: 5192536Abstract: A composition and a method for coating a wound is described. The composition consists of a mixture of 20 parts by weight of polyether polyurethane resin pellets being dissolved in about 80 parts by weight of tetrahydrofuran thereafter mixing the solution in order to provide complete mixing in an air tight container. The composition then being applied to a wound to form a tough but elastic wound coating to promote healing of animal tissue.Type: GrantFiled: November 19, 1991Date of Patent: March 9, 1993Inventor: Carl A. Huprich