33results about How to "Avoid risk of transmission" patented technology

The invention relates to a tissue sealant and a preparation method and application thereof. The sealant mainly comprises hydrophilic raw material, nucleophilic raw material, a marker and physiological thinner, wherein the hydrophilic raw material mainly refers to the derivatives of polyethylene glycol and the nucleophilic raw material mainly refers to polyamino acid. The preparation method includes: physically mixing the hydrophilic raw material, the nucleophilic raw material, the marker and the physiological thinner through a mixing tool, and performing covalent cross-linking to form hydrogel. The tissue sealant has the advantages that the sealant mainly used for sealing small wounds after eye surgery is good in tissue cohesive force and film-forming property, good in biocompatibility, capable of promoting epithelization healing and preventing seepage leakage, simple in preparation method, capable of being quantified to form a stable production line, and good in clinical application value.

The invention provides an acellular dermal matrix guided tissue regeneration membrane material as well as a preparation method and application thereof, and relates to the technical field of medical biological materials. The preparation method provided by the invention comprises the following steps: pretreating, removing an epidermal layer, preparing a loose surface, stabilizing, performing the accellular treatment, washing, and sterilizing. A membrane material prepared by the method provided by the invention adopts fish skin as a raw material and has a three-dimensional space framework structure, and comprises a compact surface formed by a biological substrate membrane and a collagen loose surface formed by a dermal scaffold. By adopting the membrane material provided by the invention, therisk of the existing tissue restoration material in carrying and propagating the human-animal viruses can be avoided, the cell components can be completely removed, the immunogenicity is low, the clearance of the collagen fibers is increased, a corium layer structure is reserved, the tissue compatibility is good, the mechanical shielding effect is good, and the generation of new bones can be facilitated; and when used for restoring and treating the bone deficiency of an oral implantation operation, the material is digestible, and the second operation and the injury of the membrane material topatients can be effectively avoided.

The invention discloses a gradient material for guiding regeneration of periodontal hard and soft tissues, and a preparation method of the gradient material. The gradient material is constructed by combining an electrostatic spinning technology with a biological 3D (three dimensional) technology. A micropore structure of an electrostatic spun fibrous membrane can prevent gingival fibroblasts frommigrating to a root surface to play a mechanical barrier role and facilitate transmission of nutrition and metabolism substances; and individualized repair of alveolar bone can be achieved according to clinical requirements since a structure and a shape of a 3D printing scaffold layer are highly designable. The method is simple and stable in preparation technology, and the gradient material integrates a periodontal guided tissue regeneration membrane and an alveolar bone repair scaffold material and has a potency to achieve clinical customized treatment. The gradient material has a good effectof guiding the repair of the hard and soft tissues in vivo and can be better applied to the synchronous regeneration and repair of the alveolar bone and the periodontal tissues.

The invention discloses a striped rice borer standardized feeding and management method which includes the processes of artificial feed preparation, larva 36-day feeding and adult feeding. The methodfirst suggests 5 days as the period of indoor population egg collection, 4 days as the period of pupa collection and 36 days as the larva feeding period of inoculating single-batch egg masses into a pupation stage. By standardized management of different stage operation processes, a multi-batch overlap loop feeding novel management system is established. The basic requirements of indoor populationlong-term subculture feeding can be met, reproduction can be expanded at any time according to change of test insect dosage, and the preparation period of test insects with different instars and at different stages is greatly shortened. Besides, the method effectively solves the problem of unstable striped rice borer indoor population feeding scale, namely the condition that accidental populationscale rapidly shrinks and even tends to be extinct. The method can be popularized as a striped rice borer indoor artificial feeding technical specification.

The invention relates to a construction site emergency management system. The construction site emergency management system comprises an intelligent robot, an intelligent detection device and a dronedisinfection unit, the intelligent robot is connected with a grade-A tertiary hospital health system, the intelligent robot, the drone disinfection unit and a monitoring group are connected with an administrator computer data terminal and a cloud database, the intelligent robot comprises a robot main body, mechanical arms arranged on the two sides of the robot body, a throat swab sample storage box arranged in the center, a medical high-definition camera, a voice guiding device, a medical material storage box arranged at the lower portion, a daily material storage box, a moving device arrangedat the bottommost portion and a telescopic device arranged at the bottom, wherein the medical high-definition camera and the voice guiding device are arranged at the top of the robot, and the intelligent detection device comprises a body temperature detector, a heart rate detector, a virus nucleic acid detector and an alarm device. The construction site emergency management system is novel in design, high in practicability, high in safety degree, good in timeliness, high in social benefit, good in development prospect and high in intelligent degree.

The invention discloses a method for treating kitchen waste based on an ultrahigh-temperature aerobic composting technology. High temperature generated in the pre-fermentation process at the earlier stage of thermophilic bacteria compost fermentation is used for sterilization, and then the thermophilic bacteria are subjected to tank turning treatment, so that the kitchen waste with viruses is turned into an organic fertilizer in a safer, more efficient and more environment-friendly way. The operation involves the following raw materials in parts by weight: 26-52 parts of kitchen waste, 20-40 parts of sludge, 35-70 parts of leaves and 120-240 parts of sludge bacteria. Compared with an existing kitchen waste treatment method, the method saves cost, is convenient to operate and is suitable for nationwide popularization.

The invention discloses a preparation method of degradable antibacterial hemostatic hydrogel capable of promoting diabetic wound repair. The hydrogel with a three-dimensional network structure is prepared from dopamine (DA) grafted oxidized natural polysaccharide and jellyfish collagen (JC) through a cross-linking agent. The hydrogel prepared by the invention not only has excellent tissue adhesion performance, antibacterial performance and hemostasis performance, but also has very strong water retention capacity, provides a moist environment for wound healing of diabetes mellitus, and accelerates wound healing. The invention has the advantages that: 1, the prepared degradable hydrogel with antibacterial and hemostatic functions for repairing the diabetic wound surface does not need to be additionally added with antibiotics when being used for treating the diabetic wound surface, so that the generation of drug resistance is avoided; 2, the used collagen is derived from plankton in an aquatic environment, and compared with animal-derived collagen, outbreak of zoonosis (mad cattle disease, porcine brucellosis, inhalable anthrax and the like) and some potential virus transmission risks are avoided;

The invention provides a bionic medical fibroblast with a sequence of SEQ ID NO:1. On the one hand, the invention provides a preparation method for preparing a protein fragment of the fibroblast. Theprotein fragment is 160-324-locus amino acid of a scallop byssus protein with a sequence of SEQ ID NO:1, and the sequence of the protein fragment is SEQ ID NO:2. The protein prepared into the fibroblast is prepared by virtue of a genetic engineering method from the material source, is low in cost and environment-friendly and can be produced in a large scale. A protein-base material is derived fromocean scallop byssus, is formed through polymerization in a similar seawater environment and has good adaptability and stability to a humidity environment. The bionic medical fibroblast has relatively good development prospects in the medical material field. According to a marine organism derived material, the transmission risk of terrestrial biological diseases is avoided in the aspect of the biological safety of materials, and an examination result shows that the material has no cytotoxicity and has good biocompatibility.

The invention provides a continuous and rapid disposable blood collecting needle automatic blood collecting device. The automatic blood collecting device comprises a base and a cover body, wherein oneend of the base is provided with a protruding connecting piece; the connecting piece is movably connected with a rack through a connecting shaft; a circle of limiting holes are formed in the rack; the rack is of a hollow structure, and a hollow inner cavity of the rack is a blood collecting needle arrangement cavity; a plurality of disposable blood collecting needles are sequentially arranged inthe blood collecting needle arrangement cavity; a spring pushing plate is arranged in the blood collecting needle arrangement cavity and pushes the disposable blood collecting needles to a feeding device; a feeding round hole is formed in the head of the rack; the feeding device is arranged in the feeding round hole; a stepping motor is connected in a center hole of the feeding device; an ejectionpush rod and a discharge push rod are arranged at the upper part of the feeding device; a blood sampling hole and a discharging hole are formed in the lower portion of the ejection push rod and the lower portion of the discharging push rod respectively; a clamping device is arranged at the other end of the base to clamp fingers; and a sensor is arranged below the clamping device.

The invention discloses a non-contact keyboard capacitance sensor and a key position input method. The non-contact keyboard capacitance sensor comprises a power supply circuit, a capacitance sensor, acapacitance-to-digital conversion circuit, a control module, a state feedback control circuit, an indicator and a communication circuit. The capacitance sensor comprises a first electrode arranged onthe outer side of the periphery of the key position, a second electrode arranged on the periphery of the key position and a third electrode arranged in the center of the key position, wherein any electrode is at least a double-bond position, and the third electrode sinks by 0.8-3.5 mm compared with the second electrode; the three-dimensional position of the finger on the keyboard is determined bydetecting the self-capacitance of each electrode, and a three-state response of the finger pointing to the key position is provided and inputted through the feedback control circuit. The invention provides a low-cost and mature CDC chip technology which is reasonable in structural design and high in resolution, effectively resists various interferences and makes full use of capacitance detection,and a commercial non-contact input solution which can be popularized and promoted is provided for sanitation sensitivity.

The invention relates to the field of biomedical materials, in particular to a fish-skin decellularized dermal matrix scaffold as well as a preparation method and application thereof. The method comprises the following steps: pretreating fish skin to obtain dermal-layer skin grafts; and separately carrying out virus inactivation, decoloration, degreasing, immunogenicity removal, cross-linking, freeze-drying shaping, cutting and sterilization on the dermal-layer skin grafts. According to the method disclosed by the invention, the damage to a collagen structure of the fish-skin dermal matrix scaffold is reduced to the maximum, collagenous fibers are arranged in order, pores are uniform and regular, the hydrophilicity is strong, rapid vascularization can be realized, and good mechanical properties, good biocompatibility and good tissue induction capability are achieved. The material is widely applied to replacement and repair treatment of dermis defects.

The invention provides a method for preparing an organic fertilizer by using penicillin mushroom dreg compost, and relates to the technical field of organic fertilizers. The organic fertilizer is prepared from the following raw materials in parts by weight: 30-70 parts of penicillin mushroom dregs, 15-35 parts of cow dung, 15-35 parts of straws and 0.1-0.3 part of a compost fermentation inoculant, wherein the content of penicillin in the penicillin mushroom dregs is less than or equal to 0.1 mg/L. The organic fertilizer prepared by the invention is high in content of organic matter, balanced in content of nutrient substances such as nitrogen, phosphorus and potassium and high in total amount, particularly, the content of nitrogen element is remarkably increased, sufficient nutrition can be provided for plants, and good growth of the plants can be promoted under the condition of low fertilizing amount. Meanwhile, the organic fertilizer is subjected to innocent treatment, penicillin is removed, generation and propagation risks of drug-resistant genes can be avoided, and the organic fertilizer is safe to use. The organic fertilizer prepared by the method provided by the invention overcomes the defect of drug-resistant gene transmission risk in preparation of the organic fertilizer from antibiotic mushroom dreg compost in the prior art, and has good application prospects.

The invention provides a tax place body temperature abnormity early warning method, a device and a system. The method comprises steps: when it is sensed that the taxpayer enters the tax place, measuring the body temperature value of the taxpayer; judging whether the body temperature value exceeds a preset abnormal body temperature threshold value or not; when the body temperature value exceeds theabnormal body temperature threshold value, generating early warning information indicating that the body temperature of the taxpayer is abnormal; judging whether real-name information of the taxpayeris stored in a to-be-referenced tax information base or not, wherein the real-name information comprises a first contact way of the taxpayer; if yes, determining a first contact way of the taxpayer;obtaining a second contact way of at least one current responsible person in the tax place; and sending the early warning information to the taxpayer and the at least one current responsible person through the first contact way and the second contact way. According to the scheme, body temperature abnormity early warning can be carried out more effectively.