Patents by Inventor David J. Vachon
David J. Vachon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20170304815Abstract: Biologically activated ion-exchange polymer salts are made by exchanging biologically active ionic agents onto ion-exchange polymers. The activated polymers are uniquely surface active and stable to thermal degradation and chemical and other forms of decomposition. The activated ion-exchange polymer salts may be processed and combined with polymer precursors using novel methods and materials to produce stable, biologically activated polymer composites, including antimicrobial and antifouling polymer composites.Type: ApplicationFiled: September 9, 2015Publication date: October 26, 2017Inventor: David J. VACHON
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Publication number: 20160030476Abstract: Compositions, methods and devices are provided for promoting healing and preventing and treating infection in mammalian subjects. The compositions include pharmacologically active, protease inhibiting, cytokine protecting, aqueous media soluble sulfonated materials, optionally associated with one or more secondary therapeutic agents or carriers, to reduce one or more of inflammation, bacterial proliferation and proteolytic activity. Additionally provided are solubility increasing, stability increasing, toxicity decreasing thiol compounds associated with an antimicrobial compound and optionally secondary therapeutic agents to reduce one or more of inflammation and bacterial infection. Combinations of sulfonated and thiol compounds provide pharmacologically active, protease inhibiting, cytokine protecting, aqueous media soluble, antibacterial, stable, toxicity decreasing, solubility increasing compounds for treating wounds, including burns, in humans and other mammals.Type: ApplicationFiled: March 14, 2014Publication date: February 4, 2016Inventors: David J. VACHON, Michael MURPHY, Scott NORDAHL
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Publication number: 20140303541Abstract: Medical devices, wound dressings, and methods of dressing wounds are described. Devices and methods using silicone and pharmaceutically active agents are described. Devices including covers and bases are described.Type: ApplicationFiled: November 17, 2011Publication date: October 9, 2014Inventor: David J. Vachon
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Publication number: 20140099357Abstract: Compositions, solid polymeric compositions, and/or articles of manufacture are provided that can include a polymer matrix having a plurality of ion-exchange particles distributed therein. Products by process are provided that can include prior to solidifying the polymeric precursors, blending the precursors with ion-exchange particles to form a mixture, and solidifying the mixture to form a solid polymeric composition product. Solid polymeric composition production methods are also provided that can include providing a plurality of ion-exchange particles, prior to solidifying the polymeric precursors, blending the precursors with the ion-exchange particles to form a mixture, and solidifying the mixture to form a solid polymeric composition. Article of manufacture production methods are provided that can include incorporating a solid polymeric composition into an article of manufacture, the solid polymeric composition including a polymer matrix and a plurality of ion-exchange particles distributed therein.Type: ApplicationFiled: December 12, 2013Publication date: April 10, 2014Inventors: David J. Vachon, Nathan Knapp
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Publication number: 20140056841Abstract: Compositions are provided for promoting healing of tissue of a vertebrate organism. The compositions can be for internal administration of a therapeutically effective amount of pharmacologically active, protease inhibiting, aqueous media soluble polysulfonated materials in salt form and associated with a secondary material to reduce one or more of inflammation, bacterial proliferation, proteolytic activity, and cancerous cell growth. The compositions may additionally or alternatively be cross-linked so as to alter the solubility of these pharmacologically active salts or slow dissolution by providing biodegradable cross-linkers. Compositions for healing the tissue of a multicellular organism are provided that can include a polysulfonated material in a liquid mixture, as solid particles or constructs that may or may not biodegrade or deliver a pharmacologically relevant value.Type: ApplicationFiled: November 5, 2013Publication date: February 27, 2014Inventor: David J. Vachon
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Publication number: 20130189339Abstract: Medical devices, wound dressings, and methods of dressing wounds are described. Devices and methods using silicone and pharmaceutically active agents are described. Devices including covers and bases are described.Type: ApplicationFiled: March 12, 2013Publication date: July 25, 2013Inventor: David J. Vachon
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Publication number: 20130004586Abstract: Compositions, solid polymeric compositions, and/or articles of manufacture are provided that can include a polymer matrix having a plurality of ion-exchange particles distributed therein. Products by process are provided that can include prior to solidifying the polymeric precursors, blending the precursors with ion-exchange particles to form a mixture, and solidifying the mixture to form a solid polymeric composition product. Solid polymeric composition production methods are also provided that can include providing a plurality of ion-exchange particles, prior to solidifying the polymeric precursors, blending the precursors with the ion-exchange particles to form a mixture, and solidifying the mixture to form a solid polymeric composition. Article of manufacture production methods are provided that can include incorporating a solid polymeric composition into an article of manufacture, the solid polymeric composition including a polymer matrix and a plurality of ion-exchange particles distributed therein.Type: ApplicationFiled: June 25, 2012Publication date: January 3, 2013Inventors: David J. Vachon, Nathan Knapp
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Publication number: 20120093759Abstract: Medical devices, wound dressings, and methods of dressing wounds are described. Devices and methods using silicone and pharmaceutically active agents are described. Devices including covers and bases are described.Type: ApplicationFiled: November 17, 2011Publication date: April 19, 2012Inventor: David J. Vachon
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Patent number: 7313444Abstract: An implantable cardiac lead system suitable for placement in the coronary sinus region of the heart. The lead system comprises a lead having two or more non-helical bends in its distal portion. The two or more non-helical bends cooperate to prevent the lead from dislodgment or displacement inside the coronary sinus. The lead system may further comprise a stylet suitable for steering the lead into at least one of the coronary sinus vein, great cardiac vein, left marginal vein, left posterior ventricular vein, and small cardiac vein. The stylet is tapered in its distal portion to provide enhanced maneuverability and steerability inside the coronary sinus region. The lead system may also comprise an introducer which aids in introducing the lead into the heart.Type: GrantFiled: February 21, 2002Date of Patent: December 25, 2007Assignee: Pacesetter, Inc.Inventors: Anne M. Pianca, Kevin L. Morgan, Gene A. Bornzin, Joseph J. Florio, David J. Vachon
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Patent number: 7153265Abstract: A biosensor including an external surface, and an accessory material in close proximity to the external surface. The accessory material includes a coating containing a hydrophilic material and/or a fiber modified to deliver a therapeutic agent. The biosensor modifies a biological response to the biosensor upon contact with a tissue, such as upon implantation into the skin of a subject, thereby reducing biofouling, inflammation and other undesirable tissue responses that interfere with biosensor performance. The biosensor can be any biocompatible sensor, suitable for short- or long-term use. Preferably, the biosensor is an enzymatic or electrochemical sensor, such as a glucose sensor. Also provided are a method of producing a biosensor and a method of delivering a biologically active substance to a subject.Type: GrantFiled: April 22, 2002Date of Patent: December 26, 2006Assignee: Medtronic MiniMed, Inc.Inventor: David J. Vachon
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Patent number: 7045361Abstract: Fluorescent biosensor molecules, fluorescent biosensors and systems, as well as methods of making and using these biosensor molecules and systems are described. These biosensor molecules address the problem of obtaining fluorescence emission at wavelengths greater than about 500 nm. Biosensor molecules generally include an (1) an acridine-based fluorophore, (2) a linker moiety and (3) a boronate substrate recognition/binding moiety, which binds polyhydroxylate analytes, such as glucose. These biosensor molecules further include a “switch” element that is drawn from the electronic interactions among these submolecular components. This fluorescent switch is generally “off” in the absence of bound polyhydroxylate analyte and is generally “on” in the presence of bound polyhydroxylate analyte. Thus, the reversible binding of a polyhydroxylate analyte essentially turns the fluorescent switch “on” and “off”.Type: GrantFiled: September 12, 2001Date of Patent: May 16, 2006Assignee: Medtronic MiniMed, Inc.Inventors: Aaron M. Heiss, Joseph C. Walsh, David J. Vachon, Glenn Noronha, Jonathan Reilly, Bill C. Ponder, William P. Van Antwerp
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Patent number: 6927246Abstract: Improved polymer matrices which incorporate fluorescent biosensor molecules as well as methods of making and using these polymer matrices are described. Such matrices can be used in fluorescent biosensors and biosensor systems, including those which are used in the detection of polyhydroxylated analytes such as glucose. The properties of the polymer matrices of the invention renders biosensors utilizing such matrices particularly well-suited for detecting and measuring in-vivo glucose concentrations.Type: GrantFiled: February 14, 2002Date of Patent: August 9, 2005Assignee: Medtronic MiniMed, Inc.Inventors: Glenn Noronha, Jonathan Reilly, Joseph C. Walsh, Brooks Cochran, Aaron M. Heiss, Bill C. Ponder, David J. Vachon
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Patent number: 6811659Abstract: Disclosed is a method for microelectrogravimetrically depositing an electroactive species onto an electrode or a plurality of electrodes comprising dispensing a solution containing the electroactive species from a microdispenser to form a hanging drop of the solution and contacting the electrode with the hanging drop of the solution, wherein the electrode is electrically coupled with the microdispenser to form an electrochemical cell, and applying a potential to the electrochemical cell. The application of the potential effects deposition of the electroactive species onto the electrode. The method of the invention eliminates the need for immersion of the electrode in a bath, reduces the volume of solution required by a factor of at least 10-100, and avoids uneven depletion of various components of the solution over successive applications.Type: GrantFiled: December 13, 2001Date of Patent: November 2, 2004Assignee: MiniMed, Inc.Inventors: David J. Vachon, Jenn-Hann Wang
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Publication number: 20040142910Abstract: Sulfonated styrene copolymers are useful for inhibiting elastase and/or collagenase and for promoting angiogenesis in a wound, and for controlling biological organisms on a porous surface. Compositions for these uses may include a tetracycline, an amino acid and/or a sulfonated styrene copolymer in salt form, especially an ammonium salt.Type: ApplicationFiled: October 21, 2003Publication date: July 22, 2004Applicant: Aegis Biosciences LLCInventors: David J. Vachon, Gary Wnek
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Patent number: 6766183Abstract: Fluorescent biosensor molecules, fluorescent biosensors and systems, as well as methods of making and using these biosensor molecules and systems are described. Embodiments of these biosensor molecules exhibit fluorescence emission at wavelengths greater than about 650 nm. Typical biosensor molecules include a fluorophore that includes an iminium ion, a linker moiety that includes a group that is an anilinic type of relationship to the fluorophore and a boronate substrate recognition/binding moiety, which binds glucose. The fluorescence molecules modulated by the presence or absence of polyhydroxylated analytes such as glucose. This property of these molecules of the invention, as well as their ability to emit fluorescent light at greater than about 650 nm, renders these biosensor molecules particularly well-suited for detecting and measuring in-vivo glucose concentrations.Type: GrantFiled: December 28, 2001Date of Patent: July 20, 2004Assignees: Medtronic MiniMed, Inc., The Regents of the University of CaliforniaInventors: Joseph C. Walsh, Aaron M. Heiss, Glenn Noronha, David J. Vachon, Stephen M. Lane, Joe H. Satcher, Jr., Thomas A. Peyser, William Peter Van Antwerp, John Joseph Mastrototaro
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Patent number: 6642015Abstract: Disclosed is a biocompatible membrane comprising a hydrophilic polyurea composition. The hydrophilic polyurea composition comprises the product of a reaction mixture comprising (a) an amino terminated polysiloxane, (b) a hydrophilic polymer selected from the group consisting of a diamino terminated copolymer of polypropylene glycol and polyethylene glycol, polyethylene glycol, polypropylene glycol and diamino polyethylene glycol having an average molecular weight of from about 400 to about 2000, and (c) a diisocyanate selected from the group consisting of hexamethylene-1,6-diisocyanate, dicyclohexylmethane 4,4′-diisocyanate, and isophorone diisocyanate, and constituting about 50 mole % of the reaction mixture. In this mixture, (a) and (b) constitute a polymeric portion of the reaction mixture, and the hydrophilic polyurea composition has a ratio of its diffusion coefficient for oxygen to its diffusion coefficient for glucose of from about 2,000 to about 10,000.Type: GrantFiled: December 29, 2000Date of Patent: November 4, 2003Assignee: MiniMed Inc.Inventors: David J. Vachon, Brooks B. Cochran, Bill C. Ponder
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Publication number: 20030199837Abstract: A biosensor including an external surface, and an accessory material in close proximity to the external surface. The accessory material includes a coating containing a hydrophilic material and/or a fiber modified to deliver a therapeutic agent. The biosensor modifies a biological response to the biosensor upon contact with a tissue, such as upon implantation into the skin of a subject, thereby reducing biofouling, inflammation and other undesirable tissue responses that interfere with biosensor performance. The biosensor can be any biocompatible sensor, suitable for short- or long-term use. Preferably, the biosensor is an enzymatic or electrochemical sensor, such as a glucose sensor. Also provided are a method of producing a biosensor and a method of delivering a biologically active substance to a subject.Type: ApplicationFiled: April 22, 2002Publication date: October 23, 2003Applicant: Medtronic MiniMed, Inc.Inventor: David J. Vachon
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Publication number: 20030166777Abstract: Excellent physical and chemical properties are achieved from cured blends of silicone polymer with organic polymers, without the use of a compatibilizer. The silicone polymer may be a high molecular weight silicone (gum) polymer or a lower molecular weight silicone polymer (LSR) formulated with a catalyst for heat cure, or a silicone polymer designed as a moisture curing Room Temperature Vulcanizing (RTV) formulation. The organic polymer may be derived from a monoolefin or from a conjugated diolefin monomer, vinyl-substituted aromatic monomer such as styrene may also be included.Type: ApplicationFiled: February 11, 2002Publication date: September 4, 2003Inventor: David J. Vachon
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Publication number: 20030050681Abstract: An implantable cardiac lead system suitable for placement in the coronary sinus region of the heart. The lead system comprises a lead having two or more non-helical bends in its distal portion. The two or more non-helical bends cooperate to prevent the lead from dislodgment or displacement inside the coronary sinus. The lead system may further comprise a stylet suitable for steering the lead into at least one of the coronary sinus vein, great cardiac vein, left marginal vein, left posterior ventricular vein, and small cardiac vein. The stylet is tapered in its distal portion to provide enhanced maneuverability and steerability inside the coronary sinus region. The lead system may also comprise an introducer which aids in introducing the lead into the heart.Type: ApplicationFiled: February 21, 2002Publication date: March 13, 2003Inventors: Anne M. Pianca, Kevin L. Morgan, Gene A. Bornzin, Joseph J. Florio, David J. Vachon
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Publication number: 20020197724Abstract: Improved polymer matrices which incorporate fluorescent biosensor molecules as well as methods of making and using these polymer matrices are described. Such matrices can be used in fluorescent biosensors and biosensor systems, including those which are used in the detection of polyhydroxylated analytes such as glucose. The properties of the polymer matrices of the invention renders biosensors utilizing such matrices particularly well-suited for detecting and measuring in-vivo glucose concentrations.Type: ApplicationFiled: February 14, 2002Publication date: December 26, 2002Inventors: Glenn Noronha, Jonathan Reilly, Joseph C. Walsh, Brooks Cochran, Aaron M. Heiss, Bill C. Ponder, David J. Vachon