The present disclosure discloses a medical material and a product and preparation method thereof. The medical material comprises a ferroelectric polymer, and optionally further comprises an inorganic ferroelectric particle. The composite membrane is prepared by experiencing at least one of annealing treatment, corona poling treatment, acid treatment, and ultrasonic treatment, and the acid treatment is conducted after the annealing treatment. The present disclosure further relates to a method for treating a composite membrane to regulate an antibacterial activity.

To provide a liquid medical material maintaining a colloid in a more sol form than a solid at normal temperature, having a higher function as a wound dressing material and a hemostatic material than fibrin glue, and being able to be produced safely and inexpensively. A gelatin aqueous solution including calcium at a concentration of 0.2 M or more and 1.0 M or less, and having a concentration of 5% by weight or more and 40% by weight or less, an average molecular weight of 80,000 or more and 120,000 or less, and a molecular weight distribution of 20,000 or more and 300,000 or less, and transglutaminase inducing crosslinking of the gelatin, are included. It is preferable that the calcium has a concentration of 0.2 M or more and 0.7 M or less, the gelatin has a bloom of 160 or more and 250 or less, and the transglutaminase has activity per unit of 36 U/ml to 400 U/ml.

The present invention relates to methods for adhering tissue surfaces and materials and biomedical uses thereof. In particular the present invention relates to a method for adhering a first tissue surface to a second tissue surface in a subject in need thereof, comprising the steps of adsorbing a layer of nanoparticles on at least one of the tissue surfaces, and approximating the surfaces for a time sufficient for allowing the surfaces to adhere to each other. The present invention also relates to a method for adhering a material to a biological tissue in a subject in need thereof, comprising the steps of adsorbing a layer of nanoparticles on the surface of the material and/or the biological tissue and approximating the material and the biological tissue for a time sufficient for allowing the material and the biological tissue to adhere to each other.

The invention provides liquid formulations comprising dissolved oxygen (e.g. 10 mg/L up to 100 mg/L dissolved oxygen), and a substance which is capable of forming a gel upon contact with a body surface or body tissues, wherein said gel is capable of releasing a therapeutically effective amount of dissolved oxygen. The substance capable of forming a gel may be thermogelling and may, for example, comprise a blend of poloxamers. The liquid formulations can be applied to body tissues whereupon they form a gel suitable for the treatment of a compromised tissue, for example a wound (acute or chronic), a burn, a skin disorder (e.g. psoriasis, acne, rosacea, or other dermatological condition such as atopic dermatitis), skin sores, or tissue necrosis. The liquid formulations are also suitable for use in the prevention or treatment of a bacterial biofilm on a body surface, e.g. on the skin. The invention further provides delivery devices (e.g. wound dressings or bandages) having incorporated therein such a liquid formulation or a gel formed therefrom.

Embodiments of the invention include silica fiber compositions useful for treatment of animal wounds and tissue, as well as for other applications in industry. The fiber compositions may be formed via electrospinning of a sol gel produced with a silicon alkoxide reagent, such as tetraethyl ortho silicate, alcohol solvent, and an acid catalyst.

The current invention describes a method for developing bioactive borate glass (BBG)-hydrogel constructs based on 3D printing technology for healing of burn wounds and low-tomoderate exuding wounds. The hydrogels serve as a water reservoir and binder for BBG, to provide hydration of the BBG-hydrogel construct and to make the bioink printable, while 3D printing technology enables the layer-by-layer deposition of multiple materials including BG and hydrogels such as alginate, gelatin, GelMa, cellulose, chitosan and other like materials, as well as control of pore geometry to increase the available surface area for wound-dressing contact and more favorable cell-biomaterial interactions.

There is disclosed a substrate with an electron donating surface, characterized in having metal particles on said surface, said metal particles comprising palladium and at least one metal selected from the group consisting of gold, ruthenium, rhodium, osmium, iridium, and platinum, wherein the amount of said metal particles is from about 0.001 to about 8 g/cm.sup.2. Examples of coated objects include contact lenses, pacemakers, pacemaker electrodes, stents, dental implants, rupture nets, rupture mesh, blood centrifuge equipment, surgical instruments, gloves, blood bags, artificial heart valves, central venous catheters, peripheral venous catheters, vascular ports, haemodialysis equipment, peritoneal dialysis equipment, plasmapheresis devices, inhalation drug delivery devices, vascular grafts, arterial grafts, cardiac assist devices, wound dressings, intermittent catheters, ECG electrodes, peripheral stents, bone replacing implants, orthopaedic implants, orthopaedic devices, tissue replacing implants, intraocular lenses, sutures, needles, drug delivery devices, endotracheal tubes, shunts, drains, suction devices, hearing aid devices, urethral medical devices, and artificial blood vessels.

Compositions that are suitable for use as a disinfectant are disclosed. Methods of making and using compositions that are suitable for use as a disinfectant are also disclosed.

Provided herein are methods for treating, adhering, or sealing biological tissue with a material, such as a hydrogel, that may include phyllosilicate nanoplatelets. The phyllosilicate nanoplatelets can have a high aspect ratio, a low aspect ratio, or be a mixture of high aspect ratio and low aspect ratio nanoplatelets. Drug releasing compositions and kits also are provided herein.

In at least one embodiment there is a wound application comprising at least one film applied over a wound comprising at least 1% green tea, and at least 0.01% sugar, wherein said film comprises a polymeric film comprising united chains and monomeric glucose points. In at least one other embodiment there is a wound application comprising a solution comprising at least trace amounts of colloidal silver, at least trace amounts of sodium chloride, at least trace amounts of dextrose; and water, wherein the colloidal silver, the sodium chloride and the dextrose are dissolved in water. In at least one other embodiment there is an application for treating a wound comprising both a solution comprising at least trace amounts of colloidal silver and a film comprising at least trace amounts of green tea applied over the solution on top of a wound.