1177 results about "Healing wounds" patented technology

A system for subatmospheric pressure therapy in connection with healing a wound is provided. The system includes a wound dressing cover dimensioned for positioning relative to a wound bed of a subject to establish a reservoir over the wound bed in which subatmospheric pressure may be maintained, a subatmospheric pressure mechanism including, a housing, a vacuum source disposed in the housing, and a collection canister in fluid communication with the vacuum source. The system further includes an exudate conduit in fluid communication with the wound dressing and the collection canister for collecting exudate removed from the reservoir and deposited in the collection canister under influence of the vacuum source and a vent conduit in fluid communication with the collection canister and the wound dressing for introducing air into the reservoir to facilitate flow of exudate through the exudate conduit.

Devices that employ external compression stocking-type garments in the treatment of edema, chronic wounds, deep venous thrombosis prevention or claudication all share a number of significant limitations. These include the frequent need for custom fitting to assure an appropriate fit, vigilant maintenance to assure a continued “good fit,” limited compliance with proper use by patients and difficulty of application. There is a large body of evidence demonstrating that patients often decline to wear the compressive stockings as prescribed or in the form that would be most beneficial because they find these devices to be difficult to put on and take off. Building on the limitations of existing therapies, and distilled lessons learned from the field of prosthetics and wound healing, the present invention employs vacuum-assisted negative pressure to provide compression and help pump fluid from the tissues of affected limbs. The device is embodied in the form of a flexible stocking-like garment that will utilize a pumping mechanism to generate negative pressure around the limb and thus create vacuum compression that will mobilize fluid in a limb and increase venous return to the heart. Through the use of a circumferential wrap, the present invention provides a major advance in both the distribution of vacuum and the securing of the device over the limb.

Topical exposure of nitric oxide gas to wounds such as chronic non-healing wounds may be beneficial in promoting healing and preparing the wound bed for further treatment and recovery. Nitric oxide gas may be used to reduce the microbial infection, manage exudates secretion by reducing inflammation, upregulate expression of endogenous collagenase to locally debride the wound, and regulate the formation of collagen. High concentration of nitric oxide ranging from 160–400 ppm may be used without inducing toxicity in the healthy cells around a wound site. Exposure to the high concentration for a first treatment period reduces the microbial burden and inflammation, and increases collagenase expression to debride necrotic tissue at the wound site. After a first treatment period, a second treatment period at a lower concentration of nitric oxide, preferably ranging from 5–20 ppm may be used to restore the balance of nitric oxide and induce collagen expression aiding in the wound closure.

The present invention provides a treatment for enhancing the ability of the body to heal wounds. A topical cream is described which improves blood flow by the transdermal delivery of the nitric oxide precursor L-Arginine either alone or with an adjunct, theophylline. The delivery of the active agents is accomplished by use of a vehicle which contains a hostile biophysical environment which is also hostile to hydrogen bond formation.

Polymerized type I and / or III collagen based compositions for medical use as adhesives and sealants and preparation thereof are described. Prior to polymerization, the collagen monomers are prepared recombinantly whereby chemical modifications of the collagen are not needed to form such monomers. The type I and / or III collagen compositions are useful as medical adhesives for bonding soft tissues or in a sealant film for a variety of medical uses. In a further aspect of the present invention, the polymerized type I and / or III collagen composition includes agents which induce wound healing or provide for additional beneficial characteristics desired in a tissue adhesive and sealant.

A disposable therapeutic device for the promotion of wound healing providing fluid irrigation and vacuum drainage of a wound includes a housing containing a controller and fluid moving device in a waterproof manner, a fluid mover capable of raising, compressing, or transferring fluid, a controller equipped to restrict fluid moving device in accordance with a predetermined treatment plan or duration, a chargeable power source removably connected to the housing, an optional therapeutic member of a compressible dressing or inflatable cuff to provide hemostasis, an identification member for regulating the operation of the device in accordance with a predetermined treatment plan, a disposable container, a pressure sensor and a control display panel. The fluid includes, but is not limited to, Lactoferrin, Xylitol, Dakins Solution, Polyhexanide and Hypochlorous Acid.

This invention relates to compositions and methods for treatment of vascular conditions. The invention provides arginine polymers and arginine homopolymers for the treatment and / or prevention of glaucoma, pulmonary hypertension, asthma, chronic obstructive pulmonary disease, erectile dysfunction, Raynaud's syndrome, heparin overdose, vulvodynia, and wound healing. The invention also provides arginine polymers and arginine homopolymers for use in organ perfusate and preservation solutions.

The present invention provides compositions and methods for treating abnormal cell proliferation and for regulating angiogenesis. In particular, multivalent protein conjugates (MVPs) are constructed to include multiple ligand-binding domains of different receptors and utilized to target multiple, different ligands that are involved in regulation of cell growth and neovascularization. The MVPs of the present invention can be used to treat various conditions associated with abnormal cell proliferation and angiogenesis such as cancer and cardiovascular disorders, as well as to promote wound healing.

The Technology described herein applies to medical dressings designed to heal wounds in the area of advanced wound care, inclusive of Negative Pressure Wound Therapy (NPWT), and describes novel wound healing absorbent scaffolds and dressing based on natural and naturally-derived material and fibers, preferentially poly (lactic) acid fibers and alginate materials.

Methods and pharmaceutical compositions for inducing or accelerating a healing process of a damaged skin or skin wound, comprise modulating expression and / or activity of at least two PKC isoforms in skin cells colonizing the damaged skin or skin wound area.

An apparatus and a method for the therapy of a range of dermatological conditions using precisely formulated gaseous milieus featuring the beneficial functions of oxygen and ozone. A range of clinical applications for this system include the therapy of gas gangrene, infected wounds, poorly healing wounds, war wounds, decubitus ulcers, dermatological conditions due to circulatory disorders, lymphatic diseases of the skin, fungal skin infections, burns, nail afflictions, radiodermatitis, parasitic skin infestations, and frostbite.

The invention relates to a prosthesis that can be implanted in the centre of wall wound scarring. The inventive prosthesis, which is intended for use in abdominal surgery, is provided with a geometric shape in the form of sheets that converge in dihedral angles. The sheets or planes are made from a synthetic biotolerated material in porous form with large pores. One of said planes is inserted into the centre of the scarring between the two aponeurotic surfaces to be joined. The other plane(s) of the prosthesis, which is perpendicular to the aforementioned plane, is arranged so as to overlap the aponeurotic edges of the edge of the section. The proliferation obtained around the prosthesis, in the scarring centre and close thereto, provides stress resistance greater than that obtained in standard closures, thereby greatly reducing the risk of hernias caused by a badly healed wound.

The invention provides a hydrogel suitable for use in wound healing, particularly for reducing post-surgical adhesions. The hydrogel comprises cross-linked derivatives of chitosan and dextran polymers. The hydrogel forms when solutions of the polymers are combined.

The invention relates to a polyvinyl alcohol / chitosan nano fiber film dressing containing nano silver and preparation thereof. The nano fiber film dressing is prepared by the following steps: taking a mixture of polyvinyl alcohol and chitosan as the base material, then mixing nano silver into the polyvinyl alcohol / chitosan nano fiber film through an electrostatic spinning technology, and finally adding glutaraldehyde to crosslink the nano fiber film so as to obtain the target product. The obtained dressing has the characteristics that the preparation technology is simple; a wet environment can be achieved for promoting wound healing; and the dressing has an antiseptic function.

Methods and apparatus for real-time, quantifiable monitoring of high-risk areas of biological tissue are described. The methods and apparatus use impedance spectroscopy to detect subtle changes in tissue health.

The present invention relates to a novel peptide and use thereof, more particularly to an isolated peptide comprising 21-41 contiguous amino acids selected from the amino acid sequence of SEQ ID NO: 1 or the amino acid sequence having at least 90% sequence homology to the amino acid sequence of SEQ ID NO: 1 and methods for promoting fibroblast proliferation and wound healing, which comprise administering to a subject in need thereof an effective amount of the peptide.

The invention discloses a method for preparing a nanofibre membrane, belonging to a technique for preparing a nanofibre compound membrane. The method comprises the following steps: preparing curcuminethanol solution and chitosan acetum, mixing the curcumin ethanol solution and the chitosan acetum by the volume ratio thereof to prepare spinning solution which is injected into an injector of an electrostatic spinning device for electrostatic spinning to form a compound nanofibre membrane and to obtain a curcumin / chitosan nanofibre membrane of antibacterial property, wherein the diameter of thecurcumin / chitosan nanofibre membrane is 200-400 nm. The invention has the advantages that the preparation process is simple, the prepared membrane material heals wound, has broad spectrum bactericidalproperty and has higher bacterial inhibition rate to colibacillus and staphylococcus aureus for 24h.

The present invention provides supramolecular hydrogels having a three-dimensional, self-assembling, elastic, network structure comprising non-polymeric, functional molecules and a liquid medium, whereby the functional molecules are noncovalently crosslinked. The functional molecules may be, for instance, anti-inflammatory molecules, antibiotics, metal chelators, anticancer agents, small peptides, surface-modified nanoparticles, or a combination thereof. Applications of the present invention include use of the supramolecular hydrogel, for instance, as a biomaterial for wound healing, tissue engineering, drug delivery, and drug / inhibitor screening.

The invention belongs to the medical material and preparation technology field, and provides a hydrogel antibacterial gauze dressing and a preparation method therefor. Hydrophilic macromolecules and glycerin are dispersed in purified water, mixed and stirred uniformly. After full swelling, inorganic nano-antibacterial agents are added, uniform mixing and stirring are carried out again and a uniform mixture, namely, hydrogel is obtained. Then the obtained hydrogel is painted on a support layer uniformly, and a hydrogel layer is formed. Then protection layers cover the exposed parts of the hydrogel layer and the support layer, and a finished product is obtained. The obtained hydrogel antibacterial gauze dressing has good biological compatibility, wound healing is promoted rapidly, the stability is good, the dressing has no toxic or side effects and the antibacterial effects are obvious.

A bio-adhesive supramacromolecular complex of the general formula:wherein R1 is independently selected from the group consisting of an alkane unsubstituted or substituted with alkoxy groups; R2 is independently selected from the group consisting of C1-6 alkyl; R3 and R4 are independently selected from the group consisting of optionally substituted aliphatic or aromatic alkyl; R5 is independently selected from the group consisting of H or C1-6 alkyl; W is a hydrogen-bond accepting functional group-containing entity; Y is a carboxylic acid ester or amide linkage; R is an independently selected peptide linking group; T1, T2, T3 and T4 are independently selected polymer residues; and m1, m2, m3, n1 and n2 are integers selected from at least 25; and wherein P has a molecular weight of about 1×103 to 1×107 and Q has a molecular weight of about 1×103 to 1×107. The complex provides controlled nitric oxide release over a longer period of time than prior art compounds in the locally delivery systems. Novel compositions, methods of preparation, apparatus including layer-by-layer assemblies coating, electrospinning and ultrasonic atomization, skin coverings containing and medical use of the complexes are described.

Methods and compositions comprising combinations of one or more anti-connexin agents and one or more other agents useful for the promotion and / or improvement of wound healing and / or tissue repair.

This invention relates to an improved Lyophilized platelet rich plasma used to make a platelet gel wound healant, and methods of preparation and use thereof for healing wounds are disclosed. The improved wound healant comprises therapeutically effective amounts of activated growth factors, platelet ghost, plasma (know as the plasma back bone), white blood cells with optional none, one or more additional anti-oxidant such as vitamin A and / or C and / or E, and / or none one or more antibiotics and / or GHK-Cu (produced by ProCyte Inc.)

The present invention provides electrospun fibrous materials with various potential applications in the healthcare industry. Unique fiber morphologies are provided, which can allow the fibrous materials to exhibit a range of desirable properties. The electrospun fibrous materials are advantageously biocompatible and may be tailored for certain specific applications, e.g., by the incorporation of one or more therapeutic agents. Exemplary materials described herein can be employed in controlled, localized drug delivery, tissue engineering, and wound healing applications.

Human TNF-gamma-alpha and TNF-gamma-beta polypeptides and DNA (RNA) encoding such polypeptides and a procedure for producing such polypeptides by recombinant techniques are disclosed. Also disclosed are methods for utilizing such polypeptides to inhibit cellular growth, for example in a tumor or cancer, for facilitating wound-healing, to provide resistance against infection, induce inflammatory activities, and stimulating the growth of certain cell types to treat diseases, for example restenosis. Also disclosed are diagnostic methods for detecting a mutation in the TNF-gamma-alpha and TNF-gamma-beta nucleic acid sequences or overexpression of the TNF-gamma-alpha and / or TNF-gamma-beta polypeptides. Antagonists against such polypeptides and their use as a therapeutic to treat cachexia, septic shock, cerebral malaria, inflammation, arthritis and graft-rejection are also disclosed.

The invention belongs to the field of biomedical engineering materials and discloses a nitric oxide loaded cationic polymer, a preparation method therefor and an application of the nitric oxide loaded cationic polymer in the field of biomedicine. A cationic polymer which is used for loading nitric oxide and containing a dendritic polyamide element specifically is a polyethyleneimine grafted dendritic polyamide polymer and has a molecular formula shown in the description. The invention further provides the nitric oxide loaded cationic polymer based on the polymer. The nitric oxide loaded cationic polymer disclosed by the invention can be applied to the field of biomedicine as a nitric oxide donor material through loading NO, is used as a biomedical material and particularly is applied to the preparation of antibacterials; and the nitric oxide loaded cationic polymer has the effects of effectively inhibiting the growth and reproduction of bacteria and fungi, has remarkable inhibitory effects on common oral cavity pathogenic bacteria, dermatophyte, wound infection bacteria and the like, has the functions of promoting wound healing, diminishing inflammation and the like and provides a support for the application of the nitric oxide loaded cationic polymer in preparation of the biomedical engineering materials.

The present invention relates to production of polyketides and other natural products and to libraries of compounds and individual novel compounds. Therefore in aspect the present invention provides 17-desmethylrapamycin and analogues thereof, methods for their production, including recombinant strains, and isolation and uses of the compounds of the invention. In a further aspect the present invention provides for the use of 17-desmethylrapamycin and analogues thereof in the induction or maintenance of immunosuppression, the stimulation of neuronal regeneration or the treatment of cancer, B-cell malignancies, fungal infections, transplantation rejection, graft vs. host disease, autoimmune disorders, diseases of inflammation vascular disease and fibrotic diseases, and in the regulation of wound healing.

The success of tissue engineering and therapeutic neovascularization depends on the development of a microvascular network. The present invention provides methods for promoting neovascularization in tissue engineering constructs, tissue repair, and wound healing comprising endothelial and mesenchymal progenitor cells.

Compositions and methods for antagonizing miRNAs that are overexpressed in chronic, non-healing wounds, as compared to healthy tissue, are disclosed. The miRNA antagonists are oligonucleotides that hybridize to selected pre-miRNA or mature miRNAs and prevent the miRNAs from binding to and downregulating their target mRNAs. Methods of using the miRNA antagonists to treat inflammatory disorders, including to promote healing of chronic, non-healing wounds and acute wounds are provided.