3results about How to "Non-toxic material" patented technology

The application discloses an aluminum cover forming method and an aluminum cover and relates to the technical field of aluminum cover manufacturing. The aluminum cover forming method comprises the following steps: S1, placing an aluminum plate into an initial forming die, and forming a macro-domain large curved surface in the middle of the aluminum plate and an initial foot position with the same height as a required foot position on the circumferential edge of the aluminum plate through the extrusion force of a press machine and the initial forming die; S2, placing the aluminum plate preliminarily formed in S1 into a final forming die, and further forming the macro-domain large curved surface formed in the middle of the aluminum plate into a final shape at room temperature through the final forming extrusion pressure of the press machine, and flowing and filling the edge cavity of the final forming die to form an edge through the extrusion of the final forming die, and forming a final foot position shape through the extrusion of the initial foot position; and S3, opening the die to take out the formed aluminum cover. The production of the large-size foot position height aluminum cover can be realized at room temperature, the energy consumption is low, and the aluminum cover is simple and convenient to manufacture.

This application discloses a hydrogel composition, its preparation method, and its applications, relating to the fields of regenerative medicine and biomedical materials technology. The hydrogel composition comprises o-nitrobenzyl alcohol-modified tetra-arm polyethylene glycol and methacrylated hyaluronic acid. The hydrogel composition provided in this application addresses the problems in related technologies that rely on tissue flaps or prostheses for repair, such as large trauma, easy foreign body reaction, asymmetrical shape, unnatural feel, and the inability of tissue engineering materials to be rapidly molded intraoperatively, requiring secondary surgery.

This invention relates to the field of biomedical technology, disclosing a targeted probiotic nanocapsule, its preparation method, and its application. The method involves using a photosensitizing agent ICG and polysaccharides to covalently couple probiotics to prepare probiotic nanocapsules. The core material of the microcapsule is primarily probiotics, and the microcapsule wall material is carboxymethyl dextran and the photosensitizing agent ICG. These microcapsules are easy to prepare, exhibit good sustained-release and controlled-release properties, and the materials are non-toxic, biocompatible, and biodegradable. This invention improves the wall material of the probiotic microcapsules and designs the preparation method and overall process accordingly. By utilizing polysaccharides and photosensitizing agents to form the capsule wall, the resulting nano-probiotics are acid-resistant, bile salt-resistant, digestive enzyme-resistant, and heat-resistant, resulting in improved probiotic stability and enhanced intestinal colonization.