Patent application number | Description | Published |
20080213344 | Wound dressing and method for controlling severe, life-threatening bleeding - 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 5 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 10 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 15 blood out of the wound site. | 09-04-2008 |
20080248508 | Methods of making a chitosan product having an ultra-low endotoxin concentration and the ultra-low endotoxin chitosan product derived therefrom and method of accurately determining inflammatory and anti-inflammatory cellular response to such materials - Chitosan is a natural product having wide range of applications in the food and cosmetic industries. Food and commodity grade chitosan are laden with pyrogens, such as endotoxins and proteins which limit its applicability in the biological and medical arenas, as minute amounts of endotoxins may induce adaptive and innate responses when contacted with mammalian tissue, pharmaceuticals and biomedical devices. Due to chitosan's ability to avidly bind endotoxin and other pyrogens, they are difficult to remove. The present invention is directed to methods for purifying chitosan from shells, food and commodity grade chitosan into ultra-pure, low endotoxin chitosan having biological and medical applicability. Additionally, the present invention is also directed to a method of determining the pyrogenicity of the ultra-pure low endotoxin chitosan. | 10-09-2008 |
20090177092 | Noninvasive sensor system and method for detection of internal pathologic conditions - The present invention is directed to a system for non-invasively detecting the presence or absence of a trauma in a tissue region utilizing a dual-modality wand-detector. The wand integrates an electromagnetic transceiver and an ultrasound transducer to simultaneously obtain interrogation signatures from the tissue region by minimizing impedance mismatches that occur due to reflected energy at interfaces. Thereafter, the interrogation signals are processed in a signal processing system utilizing dual modality and impedance software to obtain trauma condition data that is subsequently displayed. | 07-09-2009 |
20100056474 | Methods and Compositions for the Prevention of and Treatment of Infections Utilizing Chitosan-Derivative Compounds - The present invention is directed to the treatment and prevention of nosocomial infections or MRSA infections utilizing soluble chitosan or chitosan derivative compounds. These chitosan-derivative compounds, e.g., chitosan-arginine and chitosan-acid amines, exhibit bactericidal activity against bacterial pathogens, e.g., drug resistant bacteria such as Methicillin-resistant | 03-04-2010 |
20100130443 | CHITOSAN DERIVATIVES, COMPOSITIONS AND RELATED METHODS OF USE - Described herein are methods and compositions using chitosan derivatives to treat and/or inhibit acquisition of multiple drug resistance (MDR). Also described herein are methods and compositions using chitosan derivatives in combination with an antibacterial agent to treat a bacterial infection and/or inhibit growth of bacteria, for example, resulting in a synergistic or sensitizing effect. | 05-27-2010 |
20100137193 | CHITOSAN DERIVATIVES TO TREAT ANIMALS OR OPTIMIZE ANIMAL HEALTH - Described herein are methods of inhibiting the growth of or killing a bacterium in an animal subject, preventing or delaying onset of an infection with a bacterium in an animal subject, preventing or delaying onset of a pathogen mediated disease or disorder in an animal subject, or reducing bacterial load in an animal subject, comprising administering an effective amount of a derivatized chitosan to the animal. Also described herein are preparations comprising a chitosan derivative for administration to an animal. | 06-03-2010 |
20110034410 | Wound dressing and method for controlling severe, life-threatening bleeding - 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 5 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 10 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 15 blood out of the wound site. | 02-10-2011 |
20120295355 | NUCLEIC ACID DELIVERY USING MODIFIED CHITOSANS - The present invention is directed to the delivery of nucleic acids in a non-viral vector to cells by positively charged chitosan derivatives, including but not limited to chitosan-arginine, chitosan-lysine and chitosan-histidine. | 11-22-2012 |
20120301408 | ORAL CARE METHODS AND COMPOSITIONS UTILIZING CHITOSAN-DERIVATIVE COMPOUNDS - Described herein is a method of reducing bacteria in the mouth of a subject, the method comprising contacting (e.g., rinsing) the mouth with an effective amount of a composition comprising a soluble derivatized chitosan, thereby reducing bacteria in the mouth of the subject. | 11-29-2012 |
20120329751 | METHODS AND COMPOSITIONS FOR DISRUPTING BIOFILM UTILIZING CHITOSAN-DERIVATIVE COMPOUNDS - Described herein are methods of disrupting (e.g., reducing the viscosity of, or dissolving) a preformed biofilm in a subject, the method comprising: administering to the subject an effective amount of a composition comprising a soluble chitosan or derivatized chitosan wherein the soluble chitosan or derivatized chitosan when administered contacts the preformed biofilm, thereby disrupting (e.g., reducing the viscosity of, or dissolving) the preformed biofilm. | 12-27-2012 |
20120329753 | CHITOSAN-DERIVATIVE COMPOUNDS AND METHODS OF CONTROLLING MICROBIAL POPULATIONS - The present invention is directed to chitosan-derivative compounds and structures, methods of making chitosan-derivative compounds and methods for controlling, inhibiting and enhancing microbial populations in a variety of environments. The present invention is also directed to the control, inhibition and enhancement of microbial populations in animals, particularly humans. The microbial populations include bacteria, viruses and other pathogens where control of microbial populations are a necessity. The chitosan-derivative compounds of the present invention include chitosan-arginine compounds, related chitosan-L/D unnatural amino acid compounds, chitosan-acid amine compounds, chitosan-L/D natural amino acid derivative compounds, co-derivatives of the chitosan-derivative compounds, salts of the chitosan derivative compounds, and chitosan-guanidine compounds. | 12-27-2012 |
20130190227 | CHITOSAN DERIVATIVES TO TREAT ANIMALS OR OPTIMIZE ANIMAL HEALTH - Described herein are methods of inhibiting the growth of or killing a bacterium in an animal subject, preventing or delaying onset of an infection with a bacterium in an animal subject, preventing or delaying onset of a pathogen mediated disease or disorder in an animal subject, or reducing bacterial load in an animal subject, comprising administering an effective amount of a derivatized chitosan to the animal. Also described herein are preparations comprising a chitosan derivative for administration to an animal. | 07-25-2013 |
20130210761 | METHODS AND COMPOSITIONS FOR TREATING WOUNDS UTILIZING CHITOSAN COMPOUNDS - Described herein are methods of treating wounds, the method comprising administering to a subject an effective amount of a composition comprising a soluble or derivatized chitosan wherein the soluble or derivatized chitosan when administered contacts the wound, thereby treating the wound. | 08-15-2013 |
20140080785 | METHODS FOR TREATMENT OR PREVENTION OF DAMAGE RESULTING FROM RADIATION, TRAUMA OR SHOCK - Described herein are methods of treating a subject that has been or will be exposed to radiation, trauma or shock, the method comprising identifying a subject that has been or will be exposed to radiation, and treating the subject with a compound that treats, reduces the severity or delays the onset of sepsis or reduces the likelihood of mortality in a subject upon administration of a therapeutically effective amount the compound to the subject. | 03-20-2014 |
20140221308 | METHODS AND COMPOSITIONS OF REDUCING AND PREVENTING BACTERIAL GROWTH AND THE FORMATION OF BIOFILM ON A SURFACE UTILIZING CHITOSAN-DERIVATIVE COMPOUNDS - A method of treating a surface, the method comprising contacting (e.g., spraying) an effective amount of a composition comprising a chitosan (e.g., soluble or derivatized chitosan) with the surface, thereby treating the surface. Non-pharmaceutical compositions (e.g., liquid or dry powder compositions) include chitosan (e.g., a soluble or derivatized chitosan). The compounds and compositions described herein are biocompatible (e.g., non-toxic) and/or biodegradable (e.g., eco-friendly). Methods using the compositions described herein include methods of treating a surface (e.g., an inert and/or non-animal surface, e.g., a synthetic or semi-synthetic surface (e.g., cellulose, ceramic, plastic, metal, glass, wood, or stone); or a food or food product surface, the method comprising contacting (e.g., spraying) an effective amount of a composition comprising a chitosan (e.g., a soluble or derivatized chitosan described herein) with the inert and/or non-animal surface, or the food or food product surface, thereby treating the surface. | 08-07-2014 |
20140301955 | CHITOSAN-DERIVATIVE COMPOUNDS AND METHODS OF CONTROLLING MICROBIAL POPULATIONS - The present invention is directed to chitosan-derivative compounds and structures, methods of making chitosan-derivative compounds and methods for controlling, inhibiting and enhancing microbial populations in a variety of environments. The present invention is also directed to the control, inhibition and enhancement of microbial populations in animals, particularly humans. The microbial populations include bacteria, viruses and other pathogens where control of microbial populations are a necessity. The chitosan-derivative compounds of the present invention include chitosan-arginine compounds, related chitosan-L/D unnatural amino acid compounds, chitosan-acid amine compounds, chitosan-L/D natural amino acid derivative compounds, co-derivatives of the chitosan-derivative compounds, salts of the chitosan derivative compounds, and chitosan-guanidine compounds. | 10-09-2014 |
20150031610 | DERIVATIZED POLYGLUCOSAMINES FOR DELIVERY OF SMALL MOLECULES, PEPTIDES, AND PROTEINS - Described herein are compositions comprising a derivatized polyglucosamine and a small molecule, peptide, or protein and related methods of use, e.g., to deliver a small molecule, peptide, or protein to cells (e.g., cancer cells) or tissues (e.g., mucosal membrane and epithelial membrane), e.g., to treat a disease or condition in a subject. | 01-29-2015 |