Adhesive compositions and patches, and associated systems, kits, and methods, are generally described. Certain of the adhesive compositions and patches can be used to treat tissues (e.g., in hemostatic or other tissue treatment applications), according to certain embodiments.

The present invention relates to a long-lasting medical product for protecting or treating a lesion in the gastrointestinal tract. The medical product includes a protective covering, wherein the medical product upon application at and about the site of the lesion adheres to the gastrointestinal tissue and is capable of remaining at and about the site of the lesion for a time sufficient to allow the lesion to heal or be treated.

The present chitosan-based superfine fiber invention relates to compositions, formulations, and processes that result in numerous significant advantages for the production and use of superfine fiber bioactive matrices in biomedical applications. The present invention relates to superfine, chitosan-based fibers, wherein the chitosan-based fibers have a percentage chitosan content of at least about 20% w/w, and highly conformable and compliant matrices comprising such fibers, processes for their production, and related formulations. The superfine chitosan-based fibers of the invention preferably include microfibers with diameter less than or equal to about 10 microns and micron and submicron fibers that are about 2 microns and less.

A sclerosing embolizing hydrogel comprising from about 0.1% by weight to about 4.0% by weight of chitosan; from about 0.01M to about 1M of hydrochloric acid; from 0% by volume to about 40% by volume of iopamidol; from 0.5% by weight to about 25% by weight of β-glycerophosphate disodium salt; and from about 0.05% by weight to about 4% by weight of sodium tetradecyl sulphate. Also a kit for synthesizing the hydrogel and a method using the hydrogel to treat a vascular defect in a subject.

Embodiments of the disclosure include coatings comprising an oligomerized polyphenol layer. The oligomerized polyphenol layer can be used as an intermediate coated layer on a medical device that hydrogen bonds to a synthetic or natural polymer, which in turn can be used as a top coat or further associated with another coated layer. The multilayered coatings can provide properties such as hemocompatibility or lubricity. In other embodiments, the oligomerized polyphenol layer is used on a medical device as a hemostatic layer configured to contact blood and promote coagulation. The oligomerized polyphenol layer can also be used on the inner surface (e.g., inner diameter) of a medical device to prevent bacterial adherence. The oligomerized polyphenol layer can also be used on the surface of a in vitro diagnostic article, or a cell culture device to, promote adsorption of a biological mo lecule.

The present disclosure is directed to an injectable composition in form of fluid gel and the use thereof to assist the tissues resection during endoscopic procedures in which it is injected in the tissue of interest to form a cushion for tissue separation. Aspects of the composition can include a gelling agent, a modifier, a salt and water. The composition can be prepared by mixing the gelling agent, modifier, at least one salt and water via continuous stirring to obtain fluid gel solutions, wherein modifier enables the said fluid gel composition to be injected into the submucosal layer of gastrointestinal tissues through endoscopic injection catheter and needle with significantly reduced injection pressure and generate a high and durable cushion for long-lasting tissue raise-up in the submucosal layer, for the application of injection assisted resection procedures.

Devices for the occlusion of body cavities, such as the embolization of vascular aneurysms and the like, and methods for making and using such devices. The devices may be comprised of novel expansile materials, novel infrastructure design, or both. The devices provided are very flexible and enable deployment with reduced or no damage to bodily tissues, conduits, cavities, etceteras.

[Problem to be Solved] It is intended to provide a composition for hemostasis which can be uniformly applied to a bleeding site and exerts a high hemostatic effect.

[Solution] The present invention provides a composition to be applied as a spray to a subject, the spray being used for hemostasis, and the composition comprising a self-assembling peptide, wherein the self-assembling peptide self-assembles and thereby gels when the composition is applied to a bleeding site of the subject, and the self-assembling peptide is contained in the composition at a concentration at which the composition has an improved hemostatic ability as compared with that when directly applied.

Disclosed herein are methods for producing nanocrystalline cellulose and oxidized nanocrystalline cellulose from biomass. Also disclosed are methods for forming materials, and the materials formed from a fibrin matrix that incorporates the nanocrystalline cellulose and/or the oxidized nanocrystalline cellulose.

The present disclosure relates to a method for vacuum expansion of a paste prior to freeze-drying said paste to achieve a dry paste composition which reconstitutes efficiently to form a flowable paste upon addition of an aqueous medium. The present disclosure further relates to a syringe for retaining a dry paste composition in a vacuum.