30 results about "Radiation Sterilization" patented technology

The embodiment of the invention provides a detachable detection device and a needle assistor, the detection device is used for detecting blood glucose, the detection device comprises a detection assembly, a sensor assembly and a needling assembly, the detection assembly comprises a flat shell, the outer wall of the bottom of the flat shell is sunken inwards to form a containing cavity, the sensor assembly comprises a base and a probe, the base is provided with a second via hole, and the probe is arranged in the containing cavity. The base is detachably clamped in the containing cavity, part of the probe is located in the base, part of the probe extends out of the hole wall of the second through hole and extends towards the side away from the detection assembly, and when the base is located in the containing cavity, the probe is electrically connected with the detection circuit board. According to the embodiment of the invention, the detection assembly and the sensor assembly are mutually detachable and can be clamped, so that only the sensor assembly is sterilized instead of the detection assembly in the sterilization process, and the influence on the detection circuit board in the detection assembly in the electromagnetic wave or irradiation sterilization process can be avoided; the product yield of the detection device is improved.

The invention discloses a carboxymethyl chitosan-based composite gel composition and a preparation method thereof, and relates to the field of gel compositions.The carboxymethyl chitosan-based composite gel composition is formed by taking carboxymethyl chitosan as a base material, an organic amine compound which contains amido and the amido is not completely shielded by hydrophobic groups is added into a second solution, and the carboxymethyl chitosan-based composite gel composition is obtained. A stable salt dispersion liquid is formed after a neutralization reaction is performed until the pH is 6.5-8.0, the stable salt dispersion liquid is mixed with the first solution to form the composite gel, the composite gel composition prepared by matching the specific process with the raw materials can keep relatively stable viscosity after radiation sterilization, compared with conventional gel, the viscosity change rate of the composite gel after radiation sterilization is reduced, and the stability of the composite gel is improved. The quality and the using effect of the product are more favorably maintained, and the method is particularly suitable for being applied to pharmaceutical preparations, medical instruments or hygienic products and the like.

The invention belongs to the technical field of air purification, particularly relates to multi-stage cavity type air inactivation equipment, and aims to solve the problems that existing equipment wastes heat energy, is poor in airflow regulation and control and is easy to saturate activated carbon. The equipment comprises a machine shell, and a heat exchange section, a radiation sterilization section, a high-temperature inactivation section and a control unit are arranged in the machine shell; two high-temperature inactivation cavities connected in series and a wind power path regulation and control structure are arranged in the high-temperature inactivation section, and the air flowing path can be adjusted according to the airflow velocity; a radiation sterilization chamber, a light hydrogen ion generator and an activated carbon filter layer fixed on rotating blades are arranged in the radiation sterilization section, and the rotating blades can drive the filter layer to turn over for regeneration; the heat exchange section adopts an inner and outer double heat exchange tube structure, the heat exchange efficiency is improved by matching with a spiral guide vane and a radiating fin, the equipment realizes the effects of efficient inactivation, energy consumption reduction and maintenance cost reduction through the design of multi-stage collaborative sterilization, dynamic airflow regulation and control, heat energy recovery and activated carbon regeneration, and is suitable for various scenes with higher requirements on air purification.

The present disclosure sets forth an automated peritoneal dialysis (“PD”) system, which enables the re-use of certain disposable components. The APD system includes a sterilization source, such as a steamer or a UV radiation light source that sterilizes a disposable filter. During therapy, the disposable filter is connected to a PD fluid line and to a patient's catheter. Post-therapy, the disposable filter is disconnected from the patient's catheter, but remains connected to the PD fluid line, and the disposable filter undergoes steam or UV radiation sterilization.

The application discloses a gelatin-based medical consumable and a sterilization process thereof. The consumable comprises a gelatin main material and a biocompatible auxiliary component. The gelatin is pre-crosslinked to form a three-dimensional network structure, and can be made into a porous sponge, a film, a fiber felt, a particle, a columnar body, a sheet body or a gel block. The sterilization process is used for a pre-crosslinked consumable which has been formed. Radiation sterilization, ethylene oxide sterilization or combined sterilization is adopted. According to the sterilization route, the water content, the packaging atmosphere, the radiation dose, the ethylene oxide concentration and the resolution condition are controlled, so that the sterilization treatment mainly plays a sterilization role and does not damage the gelatin main network. After sterilization, the strength retention rate of the consumable is not less than 85%, the swelling ratio retention rate is not less than 80%, the degradation time change rate is ± 20%, and the gel fraction change rate is not more than 10%.

The invention relates to the technical field of composite films for BIB packaging inner bags, and discloses a high-barrier single-material sterile BIB packaging bag and a preparation process thereof, the preparation process comprises the following steps: using vanillin, 3-bromopropene, gallic acid, diethylenetriamine and 1, 3-acetonedicarboxylic acid as raw materials to prepare a gallic acid type grafting monomer; the preparation method comprises the following steps: carrying out melt grafting modification treatment on LDPE (Low-Density Polyethylene) resin by using a gallic acid type grafting monomer, and compounding with graphene oxide through pi-pi accumulation action and hydrogen-bond interaction to prepare the graphene-polyethylene composite master batch with an antioxidant function; the preparation method comprises the following steps: preparing a polyethylene master batch, introducing the master batch into a seven-layer co-extruded film to prepare a polyethylene co-extruded film, and preparing the high-barrier single-material sterile BIB packaging bag by taking the co-extruded film as a raw material of an inner bag of the BIB packaging bag. The polyethylene co-extruded film prepared by the invention still shows excellent mechanical properties and barrier properties after being treated by a radiation sterilization technology, and can be used instead of an existing aluminized polyester bag.

The application provides a radiation sterilization method of a disposable polyvinyl alcohol foam wound care material. It relates to the field of medical devices. The method comprises the following steps: placing the disposable polyvinyl alcohol foam wound care material in a sterilization chamber to obtain the sterilized disposable polyvinyl alcohol foam wound care material; packaging the sterilized disposable polyvinyl alcohol foam wound care material into a packaging box in a sterile environment; placing the packaging box into a cargo box, and placing the cargo box on a lifting tool, which is operated to a radiation area by an automatic transmission system; performing multiple cyclic radiations in the radiation area to obtain the re-sterilized disposable polyvinyl alcohol foam wound care material, and the radiation dose of the multiple radiations is required to be 25.0-40.0 kGy. The method can realize multiple sterilization of the disposable polyvinyl alcohol foam wound care material and improve the sterilization effect.

The application discloses an antibacterial composite metal coating based on protective area etching and galvanic corrosion and a preparation method and equipment thereof, and the method comprises the following steps: 1) forming a composite coating by vapor depositing a metal transition layer with a standard electrode potential higher than silver, a silver island intermediate layer and electrochemically depositing a silver layer on the surface of a pretreated titanium-based equipment; 2) performing isolation line etching on the outside of the coating area boundary of the equipment surface by laser; 3) preparing a hydrophobic protective coating on the surface of the reserved coating area; 4) filling paraffin in the isolation line groove to form a temporary hole sealing layer; 5) immersing the equipment in an acidic electrolyte to selectively dissolve the coating in the to-be-stripped area in a sectional stripping mode; 6) removing the paraffin in the isolation line groove and performing trimming by laser; and 7) obtaining the coating material after mechanical polishing, cleaning, drying, vacuum packaging and radiation sterilization. The high-strength coating can realize efficient sterilization through the galvanic corrosion effect and prevent coating abrasion during use.

This invention relates to the field of radiation sterilization technology and discloses an irradiation sterilization device for cosmetics, comprising: support legs and a transmission belt frame mounted on top of them. A rotating shaft is disposed inside the transmission belt frame, and a conveying platform is disposed outside the rotating shaft. An electron beam chamber is disposed outside the transmission belt frame, and a support platform is fixedly mounted on the top of the electron beam chamber. Vertical poles are symmetrically fixed on the top of the support platform, and a retaining pin is disposed on the lower surface of the top of each vertical pole. This invention uses a follow-up shielding part to automatically conform to the top of the cosmetics and block scattered radiation, thus preventing excessive radiation burns to the cosmetics while eliminating irradiation dead zones, resulting in more uniform and thorough sterilization. A linkage part directly links the height of the cosmetics with the conveying speed, adapting to cosmetics of different heights and pre-matching a reasonable irradiation time. A temperature control and speed adjustment part automatically fine-tunes the conveying speed based on temperature feedback, ensuring that the irradiation dose remains stable within the acceptable range.

The utility model relates to the technical field of irradiation sterilization equipment, in particular to a driving device with a gamma ray protection mechanism, which comprises a support frame, two blocking mechanisms, a shielding mechanism and a position adjusting mechanism, the top of the support frame is fixedly connected with a protection shell, and the tops of the two ends of the protection shell are fixedly connected with fixing rods. According to the irradiation sterilization device, the shielding mechanism is arranged at the top of the inner side of the protection shell, the irradiation sterilization device body is conveniently driven and controlled to be started by utilizing the driving controller, the protection plate is conveniently opened and closed through the first air cylinder, then the first shielding shell and the two second shielding shells move downwards by starting the second air cylinder, and the irradiation sterilization device is convenient to use. According to the radiation sterilization device, the first shielding shell and the two second shielding shells are arranged, so that the first shielding shell and the two second shielding shells cover the outer side of an object, gamma rays emitted by the radiation sterilization device body are shielded through the first shielding shell and the two second shielding shells, the gamma rays can be shielded and absorbed through the protection shell and the two protection plates, and dual protection is achieved.

The present application belongs to the technical field of dairy product production and processing, and particularly relates to a dairy product filling equipment with a cleaning function, which comprises a self-water-supply cleaning mechanism, inverted emulsion bottles are placed at equal intervals on an emulsion bottle inverted conveying belt and move towards the top of the self-water-supply cleaning mechanism, an emulsion bottle overturning mechanism is arranged below the output end of the emulsion bottle inverted conveying belt, the emulsion bottle overturning mechanism comprises a positioning assembly, and the positioning assembly is used for automatically positioning and overturning the emulsion bottle pressed by the pressing machine; an intermittent hole-type dryer is used for cyclic hot air drying and infrared radiation sterilization drying of the emulsion bottle at a right angle; a stirring filling machine is used for automatically filling the emulsion bottle transferred to the position directly below the stirring filling machine, the stirring filling machine is internally provided with a stirring assembly, and the stirring assembly is used for real-time stirring of the dairy to be filled. The equipment is automatically operated throughout the whole process, has a high-quality cleaning function, and has the abilities of drying and sterilization and uniform filling.

The application provides a turnover type irradiation sterilization device and method, relates to the technical field of radiation sterilization, and the device comprises an irradiation box body, a feeding belt conveying part, a discharging belt conveying part, an irradiation mechanism and a turnover driving assembly. The irradiation mechanism is provided with symmetrical rotating supports and a belt bearing assembly, can clamp a protective article and realize 180-degree turnover, and can make the front and back surfaces be exposed to the lower part of an irradiation generation module in sequence for sterilization. An adjusting unit controls the opening and closing and spacing of the belt bearing assembly, ensures stable conveying and clamping, and the turnover driving assembly synchronously drives the irradiation generation module to lift, so that interference is avoided. During sterilization, the protective article is first sent into the irradiation box body by the conveying belt, is turned over after first irradiation, is subjected to second irradiation, and is finally output by the discharging belt. The application adopts a closed automatic design, radiation is not leaked out, sterilization is complete and high in efficiency, and is suitable for the large-scale production of medical protective articles such as masks and protective clothes.

This paper describes a method for producing a sterile in-situ gel based on solvent removal technology, and the resulting product. Compared to conventional aseptic manufacturing methods for in-situ gel formulations, this method adds a volatile solvent during production to reduce the viscosity of the formulation solution, facilitating filtration and sterilization. The volatile solvent can then be removed by various methods without adversely affecting the final in-situ gel formulation. Research data shows that the volatile solvent residues in in-situ gel formulations produced using this method meet safety standards. Compared to formulations produced using the conventional radiation sterilization method, the types and amounts of degradation impurities in the polymer and active pharmaceutical ingredients are both reduced, further improving the safety of the formulation.

The utility model relates to the technical field of medicinal packaging materials, and discloses a high-barrier high-temperature-resistant radiation-resistant medical composite film which comprises an inner film and an outer film, the inner film comprises a barrier layer, a waterproof layer, a high-temperature-resistant layer, an anti-radiation layer and an antibacterial layer, and the barrier layer, the waterproof layer, the high-temperature-resistant layer, the anti-radiation layer and the antibacterial layer are fixedly connected through adhesive layers; the outer film comprises an aluminum foil layer, a nylon layer and an aluminum oxide coating layer. According to the high-barrier, high-temperature-resistant and radiation-resistant medical composite film, gas permeation is effectively prevented through the barrier layer, it is ensured that drugs are not affected by external gas, the original chemical stability and drug effect of the drugs are kept, the waterproof layer ensures that the interior of a package is dry, and moisture invasion is prevented, and the outer film comprises the aluminum foil layer, the nylon layer and the aluminum oxide coating layer. The protection effect and the service life of the package are improved under the combined action of the materials, and the composite film is suitable for packaging various medical supplies, and is particularly suitable for products needing long-term storage, high-temperature sterilization or radiation sterilization.

The invention discloses a duck liver fresh-keeping process based on low-temperature heat treatment and a processing device. The duck liver fresh-keeping process comprises the following steps: cleaning and sorting duck livers; performing low-temperature heat treatment on the cleaned and sorted duck liver in a low-temperature heat treatment device; placing the duck liver subjected to low-temperature heat treatment in a high-pressure treatment device for high-pressure treatment; placing the duck liver subjected to high-pressure treatment in a radiation sterilization device, and performing radiation sterilization treatment; and packaging the duck liver subjected to radiation sterilization treatment. According to the method, bacteria, molds, saccharomycetes and bacterial spores can be thoroughly inactivated at a deeper level by combining high-pressure treatment and radiation sterilization technologies, the quality of microorganisms inside and outside the product is ensured to meet the standard, so that the shelf life of the product is effectively prolonged, the survival possibility of the microorganisms can be effectively eliminated by comprehensively applying multiple sterilization technologies, and the product quality is improved. The existence of pathogenic microorganisms in the food is reduced, the safety of the food is improved, and the risk of food-borne diseases caused by bacterial infection is reduced.

A pierceable plug for closing off a piercing end of a needle is described herein. The plug has an end that is configured to be pierced by the needle to close off the piercing end of the needle. The plug may be radiation sterilizable and may be made of a material that includes an antimicrobial agent. The plug may be used to close off a needle end that is in fluid communication with a radioactive substance.

A bone-regeneration material comprising a biodegradable fiber produced using an electrospinning process, wherein the biodegradable fiber comprises 30 to 50 wt % of PLLGA resin and 70 to 50 wt % of β-TCP fine particles substantially uniformly dispersed in the PLLGA resin without forming aggregates, wherein the β-TCP fine particles are not chemically bonded to the PLLGA resin, and surroundings of the β-TCP fine particles are covered by the PLLGA resin so that the β-TCP fine particles are not separated from the biodegradable fiber during a formation of the fiber, and wherein the bone-regeneration material is sterilized by using radiation sterilization with gamma ray.

The present application relates to the technical field of radiation sterilization dose management, and particularly relates to a medical instrument radiation sterilization dose dynamic optimization system based on biological load analysis. The present application firstly obtains sterilization resistance according to the quantity difference of various bacteria before and after sterilization in all batches in the historical working period, combined with the corresponding radiation dose; further obtains comprehensive vitality combined with the seasonal similarity between working periods; further obtains biological load consistency and classifies the historical batches according to the similar characteristics of the quantity of all similar bacteria before sterilization and the comprehensive vitality between any two batches; further selects a reference batch, obtains a more reasonable initial radiation dose of the current working period according to the biological load consistency of the reference batch and the first batch at present, combined with the corresponding sterilization record, reduces the interference of seasonal activity difference of bacteria, reduces the number of subsequent repeated verification and correction, and improves the sterilization efficiency.

The invention discloses a composition containing gamma-aminobutyric acid for promoting growth and development of children and a preparation method thereof, the composition comprises gamma-aminobutyric acid and two newly designed modified compounds N-(4-trifluoromethylbenzyl)-gamma-aminobutyric acid amide and a gamma-aminobutyric acid-zinc complex, and functional components such as animal bifidobacterium subsp.lactis, hydrolyzed yolk powder, casein phosphopeptides, minerals and theanine are supplemented. The preparation process comprises the following steps: respectively dissolving and homogenizing the components, mixing step by step in a protective atmosphere, and finally degassing, filling and performing low-temperature irradiation sterilization. The two modified compounds are prepared through activation amidation and complex reaction respectively, and the blood-brain barrier transmittance, stability and bioavailability of original components are remarkably improved. The composition can effectively promote secretion of growth hormones, improve bone growth and improve sleep quality through a multi-target synergistic effect, and is suitable for promoting growth and development of children.

The utility model discloses an anti-scale water treatment ball for far infrared radiation sterilization, which comprises a water treatment ring I and a water treatment ring II, through holes are uniformly formed in the water treatment ring I and the water treatment ring II, grooves are uniformly formed in the top of the water treatment ring I and the bottom of the water treatment ring II, and the through holes are communicated with the grooves. And the interiors of the plurality of groups of grooves are connected with water soluble lines. Through the structural design of the first water treatment ring, the second water treatment ring, the water soluble line and the groove, the performance that the water treatment ball can be divided into two parts in water in the later period can be conveniently achieved, the throwing number of the water treatment balls in the later period can be increased, the contact area between the water treatment ball and water can be increased, and then the later treatment effect and quality of the water treatment ball can be improved; meanwhile, a plurality of groups of through holes are formed in the water treatment ring I and the water treatment ring II, so that the contact area between the water treatment ball and water can be increased again, the water absorption performance of the water treatment ball in the later period is improved, and the treatment performance and quality of the water treatment ball can be ensured again.

The utility model discloses a collagen raw material cobalt-60 irradiation sterilization box, which belongs to the technical field of collagen storage devices and comprises a hollow heat insulation box, an inner box is fixedly arranged in the heat insulation box, the middle of the inner box is hollow, and a freezing cavity for placing dry ice is arranged between the outer wall of the inner box and the inner wall of the heat insulation box. The inner box comprises an upper lining and a lower lining, the upper lining is arranged above the lower lining, a clamping groove is formed in the bottom of the lower lining, and an anti-skid column matched with the clamping groove is arranged at the bottom end of the interior of the heat preservation box. And meanwhile, the clamping grooves are formed to be inserted into the anti-skid columns, so that vibration caused by collision of the collagen raw materials in the inner box in the carrying process is reduced, and it is guaranteed that the collagen raw materials do not go bad in the transportation and irradiation processes through the formed freezing cavity.

The present invention relates to the technical field of medical dressing materials, and more specifically to jellyfish collagen sponges and methods for producing the same. Step S1: Adjust the concentration of a jellyfish collagen raw material with a molecular weight of 80 kDa or more with pure water to obtain a collagen solution with a mass concentration of 0.2 to 0.5%. Step S2: Add ethanol to the jellyfish collagen solution, stir, and let stand. Step S3: Obtain a precipitate by centrifugation or obtain a filter cake by suction filtration. Step S4: Freeze-dry under vacuum to obtain a collagen sponge. 60 The present invention includes step S5, which involves radiation sterilization, packaging, and storage. The collagen sponge produced by this invention has a dense structure, the collagen does not denature, it has strong liquid absorption capacity, and it is resistant to deformation and collapse even when exposed to water. The manufacturing method of this invention avoids technical problems such as the inclusion of impurities due to salting out, low pH precipitation efficiency, or low mechanical strength of the collagen sponge.

This invention discloses a radiation-resistant, sterilizable biopharmaceutical elastomer material, specifically relating to the field of biopharmaceutical materials technology. It comprises 50-70 parts of a thermoplastic elastomer matrix, 5-10 parts of an radiation stabilizer, 10-15 parts of a plasticizer, 1-3 parts of an antioxidant, 5-8 parts of a biocompatibility agent, and 1-3 parts of a nano-reinforcing agent. The elastomer material of this invention possesses excellent tensile strength, elongation at break, hardness, radiation resistance, and biocompatibility, meeting current requirements for biopharmaceutical materials and exhibiting promising market prospects.

The nourishment is prepared from the following raw materials: gordon euryale seed, semen cuscutae, raspberry, fructus lycii, glossy privet fruit, achyranthes root, radix scrophulariae, rehmannia root, radix ophiopogonis, schisandra chinensis, rhizoma polygonati and rhodiola rosea through the process steps of extraction, drying, crushing, granulation, total mixing, filling, polishing, screening, packaging, radiation sterilization and the like. The nourishment with a good effect is produced. Compared with the prior art, the nutritional product has the following advantages that by effectively extracting the effective components of the medicines, the effects of replenishing qi and enriching blood, enriching yin and nourishing kidney, tonifying spleen and nourishing stomach and regulating qi and blood weakness and viscera dysfunction of a human body are achieved, so that the effects of enhancing immunity and relieving physical fatigue are achieved.

The utility model relates to the field of irradiation sterilization technology discloses a kind of irradiation sterilization equipment with protection function, including rack, and the inside of rack is sterilization cavity, and cavity built-in irradiation source device and article conveying track, cavity two ends are respectively equipped with inlet and outlet, and carry the protection device of different sterilization requirements adaptation, and the front part of rack is equipped with control machine, can set up irradiation relevant parameter and instruction, and convey radiant energy and electric power, overturn mechanism automation is carried out to the single irradiation of article and is overturned, again article is conveyed to secondary irradiation area and is carried out secondary irradiation, realize the automation of article, article all-around irradiation and all-around radiation protection.The utility model in, through the cooperation of each component, realize the full-automatic high safety degree irradiation sterilization operation, improve equipment operation convenience and sterilization process stability, solve the problem that traditional irradiation equipment protection structure is single, article is difficult to be completely irradiated.

The application belongs to the technical field of medical dressings and relates to a radiation-resistant sterilization silicone gel dressing which is widely applied in wound self-repair, scar inhibition, pressure reduction, antibiosis, deodorization, hemostasis, foam dressing, eye patch, scar patch, fixing belt and the like. The radiation-resistant sterilization silicone gel dressing comprises a release layer, a porous silicone gel layer, an absorption layer and a water-blocking layer, and each layer is integrated by bonding and heat sealing process and is prepared by die cutting. The porous silicone gel layer has radiation resistance. By controlling the ratio of silicon hydrogen groups to silicon vinyl groups in the system to be between 0.35 and 0.85, first, a component A is prepared by taking methyl phenyl vinyl silicone oil, end vinyl silicone oil, MDTQ methyl phenyl vinyl silicone resin and a catalyst as main raw materials; then, a component B is prepared by taking methyl phenyl vinyl silicone oil, end vinyl silicone oil, MDTQ methyl phenyl vinyl silicone resin, a crosslinking agent, a chain extender and an inhibitor as main raw materials; finally, the component A and the component B are mixed in proportion, and the radiation-resistant sterilization silicone gel dressing is prepared by coating and punching.

The present application belongs to the technical field of label printing or radiation sterilization, and particularly relates to a label with radiation color change indication and radiation dose detection, a preparation method thereof, and a radiation dose detection method. The preparation method of the label comprises the following steps: mixing thymol blue, alcohol, alcohol-soluble acrylic resin, a buffer solution, chloral hydrate, and a leveling agent to obtain composite ink; performing positioning and quantitative inkjet printing of the composite ink on the surface of an adhesive label, and drying to form an ink layer, thereby obtaining the label with radiation color change indication and radiation dose detection. The label can indicate whether the goods have undergone a sufficient dose of radiation according to the color change after radiation, and the size of the radiation dose can be obtained according to a radiation dose standard color chart. The label has good color consistency before and after undergoing the same dose of radiation, and the obtained radiation dose result is accurate and reliable.

A plant cultivation device (100) comprising a foam body (1) for holding seeds and / or seedlings during at least one growth phase, made of a soft material having a Shore A hardness according to ISO 868:2003 of less than 80 on average under ISO 291:2008, wherein the foam body (1) is sterilizable to a sterility assurance level of at least SAL 10-5 by chemical sterilization, preferably by hydrogen peroxide, ozone, peracetic acid, ethylene oxide, ethanol and / or isopropyl alcohol, and / or by physical sterilization, in particular by electron beam and / or gamma radiation.

The application belongs to the field of biomedical materials, and provides a collagen injection for tendon repair based on coaxial neutralization microchannel fiber formation and a preparation method thereof. The application adopts coaxial neutralization microchannel fiber formation technology to prepare short-cut oriented collagen microfiber bundles, and then realizes the synergistic unity of high modulus microfiber reinforcement, low injection force, fine needle passability and filling stability through the two-phase composite design of fibrous collagen paste and gelled collagen paste. Meanwhile, through precise pH control of bicarbonate buffer alkali liquor and optimization of radiation sterilization resistance, the problems of the existing injection type collagen materials, such as the difficulty in balancing between mechanical support and clinical injectability, the degradation of collagen structure and gel performance caused by terminal sterilization, the narrow processing window of coaxial fiber formation of high-concentration collagen system and the poor batch consistency are solved, and the application value of the application in tendon injury repair is wide.

A biocellulose wound dressing comprising silver nanoparticles comprises a biocellulose wound dressing, which comprises fibers and water, combined with silver nanoparticles and a preservative. In the preparation method, biocellulose is purified inside an autoclave by boiling the biocellulose in a sodium hydroxide solution, adjusting for a neutral pH, then soaking in an organic acid and storing in distilled water prior to use. Then, the biocellulose wound dressing comprising silver nanoparticles is prepared by soaking the obtained biocellulose wound dressing in a silver nanoparticle solution, autoclaving, then soaking in the preservative and sterilizing by gamma radiation.