Tissue and other body structures may be protected using a dry, free-flowing, sterilized mixture of chitosan particles and oxidized polysaccharide particles in sealed packaging. The mixture may assist in returning an injured, inflamed or surgically repaired surface to a normal state, e.g., through one or more healing mechanisms such as modulation of an inflammatory response, phagocytosis, mucosal remodeling, reciliation or other full or partial restoration of normal function.

Methods are disclosed for conditioning a polymeric stent after sterilization, and/or after crimping and before packaging, such that the properties of the polymeric stent fall within a narrower range of values. The stent is exposed to a controlled temperature at or above ambient for a period of time after radiation sterilization and/or after crimping and before sterilization. As a result, the polymeric stent properties, particularly radial strength and number-average molecular weight of the polymer of the polymeric stent, fall within a narrower range.

Tissue and other body structures may be protected using a hydrated composition made from free-flowing substantially collagen-free rehydratable polysaccharide particles and rehydratable polysaccharide sponges. Rehydration of the particles without clumping may be carried out be dispersing the particles in a biocompatible water-miscible polar dispersant such as ethanol and combining the dispersion with sufficient aqueous solvent for the particles to convert them to a cohesive hydrogel. The hydrated composition may assist in returning an injured, inflamed or surgically repaired surface to a normal state, e.g., through one or more healing mechanisms such as modulation of an inflammatory response, phagocytosis, mucosal remodeling, reciliation or other full or partial restoration of normal function.

Provided herein is a beauty product containing sterile PCL microspheres. The sterile PCL microspheres are subjected to an irradiation and sterilization treatment, the surface of the sterile PCL microsphere is smooth and spherical, the average particle size is in the range of 26-46 m, and the roundness is 0.96. The sterile PCL microspheres are obtained by means of an irradiation and sterilization treatment using a or ray; and a CMC-Na gel is obtained by means of a sterilization treatment using a moist heat sterilization method. The sterile PCL microspheres subjected to irradiation and sterilization, and the CMC-Na gel are uniformly mixed and then filled into a syringe sterilized with ethylene oxide, thus forming the sterile beauty product that can not only meet the requirements for sterile injection, but can also better ensure the quality of the product and reduce side effects such as an inflammatory reaction.

Electronic devices for treating a biological fluid and methods of operating the devices are disclosed. In some embodiments, the electronic device includes a plurality of non-safety critical components, a first controller communicatively coupled to the plurality of non-safety critical components, a plurality of safety critical components, and a second controller communicatively coupled to the plurality of safety critical components. In some embodiments, the electronic device includes a treatment interface.

Methods and apparatus for sterilizing plant material include disposing plant material in a sub-atmospheric pressure environment, dispersing a non-toxic, non-polymerizable gas into the sub-atmospheric pressure environment, applying an electric field to change the gas into cold plasma, and maintaining exposure of the plant material to the cold plasma until substantially sterilized plant material is obtained, wherein an amount of at least one active constituent in the plant material is substantially unchanged by the sterilizing. The plant material may be Cannabis.

The present invention discloses a method for preparing a lyophilized collagen powder and use thereof. The preparation method includes the following steps: filling a certain amount of a collagen solution in an ice cube mold, and freezing in an ultra-low-temperature environment; crushing the frozen solid collagen in a low-temperature crusher, and performing quick lyophilization, to obtain an intermediate lyophilized collagen powder; further weighing an amount of a collagen solution, and uniformly mixing with the intermediate lyophilized collagen powder prepared in the previous step; repeating the low-temperature crushing operation with the mixed collagen solution, to obtain a lyophilized collagen powder; and obtaining a final product after filling and sterilization by freezing irradiation at a low temperature. The collagen powder product is useful for hemostasis, or tissue filling after dissolution in sterile physiological saline.

A nanocarbon-iodine calcium alginate microspheres and a preparation method thereof are provided, the nanocarbon is added to the microspheres to enhance an imaging capability of iodine under X-ray, which is a good way to solve a problem that an embolic agent in clinical application cannot be imaged under X-ray. In addition, the preparation method is simple with good stability and safety. It is proved through experiments that the microspheres can be imaged under conventional interventional X-ray examination devices in CT and DSA, it is proved through animal experiments that the microspheres have good X-ray imaging performance and embolization effect.

A nanocarbon-iodine calcium alginate microspheres and a preparation method thereof are provided, the nanocarbon is added to the microspheres to enhance an imaging capability of iodine under X-ray, which is a good way to solve a problem that an embolic agent in clinical application cannot be imaged under X-ray. In addition, the preparation method is simple with good stability and safety. It is proved through experiments that the microspheres can be imaged under conventional interventional X-ray examination devices in CT and DSA, it is proved through animal experiments that the microspheres have good X-ray imaging performance and embolization effect.