107 results about "Occupational exposure" patented technology

The present invention relates to a method and apparatus to objectively measure stress and fatigue using measurement tools, record stress and fatigue related data in a standardized database, create automated prompts and alerts based upon pre-defined stress and fatigue thresholds (which are derived based upon individual end-user and task performance), provide a number of interventions (which can be preferentially selected by the individual end-user), create data-driven best practice guidelines though meta-analysis of the database, and provide an objective tool for comparative technology assessment.

The invention relates to a workplace occupational exposure simulation analysis method based on a computational fluid dynamics (CFD) technology. The method comprises the following steps of: determining a simulation scene through CFD three-dimensional modeling, and constructing a three-dimensional grid of the whole simulation region according to an arrangement region layout picture to be simulated; and constructing the grid of the whole simulation region by a bottom to top method in FLUENT preprocessing software GAMBIT. In the FLUENT, parameters are set according to a leakage scene to be simulated, namely a proper calculation model is selected according to a release state of toxic gas, the physical property of substances is defined, a boundary condition is set, and a flow field is initialized. A result is analyzed by utilizing a post-processing function and professional software such as Tecplot of the FLUENT, so that a gas diffusion path, a diffusion speed field, an atmosphere pressure field, concentration field distribution and the like of simulated toxic gas leakage are obtained; and therefore, toxic gas leakage and diffusion rule, exposure concentration and the like of a workplace are obtained through analysis.

The invention relates to a workplace benzene occupational exposure and carcinogenic hazard analysis method. A program of an adopted technical method analyses the risk by steps of a health risk assessment four-section method which is the most popular in the world, namely, risk identification, dose-response assessment, exposure assessment and risk characterization. The method comprises the following steps: numerically simulating an inner exposure dose by using ERDEM software; analyzing a quantitative relation between the exposure dose and the carcinogenic response by using a multi-step model; and analyzing the probability distribution rule by using a crystal ball Monte Carlo analogue method aiming at the uncertainty of the exposure and the risk. The invention firstly and perfectly provides a workplace benzene occupational exposure and carcinogenic hazard analysis technology; and the method can be applied to the work such as health monitoring, occupational exposure and health risk assessment and the like of high-risk occupational groups.

The invention discloses a portable radioactive ray irradiation device, which comprises a shielding body, a radioactive source, a radioactive hole, a collimator, a scattering cavity and a radioactive source support frame, wherein the radioactive source is arranged in the shielding body, the radioactive hole is formed in one side of the shielding body, the collimator is arranged in the radioactive hole and is used for leading out radioactive rays, the scattering cavity is arranged in the shielding body and is used for reducing the self scattered radiation of the irradiation device, the radioactive source support frame is arranged in a through hole formed in the shielding body, the radiation source support frame adopts the liftable design, the radioactive source is positioned in the center position of the scattering cavity during the irradiation, the radioactive rays generated by the radioactive source pass through the collimator and a tungsten alloy collimating diaphragm arranged in the collimator to be subjected to collimating shaping, and then forms reference radiation to be used for the in-site calibration work of a fixed environment radiation monitoring instrument, and through the scattering cavity and the tungsten alloy collimating diaphragm, the scattered radiation in the reference radiation and the occupational exposure dosage of operators are reduced.

The disposable stethoscope cover is a medical device that is designed to prevent the spread of infection by not allowing any fluids, infectious or not, to pass through it. It is a universal precaution which institutes personal protective equipment to provide barrier protection preventing liquids from transporting through it. It is designed for a single use. It is designed to be used wherever stethoscopes are used. It is designed to protect the stethoscope from contamination and to prevent the spread of contamination via the stethoscope. According to federal mandates in OSHA states, personal protective equipment should be provided to employees that perform duties that place them at risk of occupational exposure at no cost to the employees. Also, according to the mandates, the product should be disposed of by the employer with all costs of disposal being borne by the employer. Recently, non-OSHA states have enacted legislation to address the potential spread of infection through blood and bloodborne pathogens. Pursuant to this legislation, personal protective equipment should be worn at all times whenever contamination and or infection are possible. Preventing infection will aide mankind in increasing our quality of life.

The invention discloses a chemical poison occupational hazard risk grade evaluation method for petrochemical enterprises, and relates to the field of occupational health. The method includes the following steps of investigating and recording operating posts and corresponding operation types in a place to be evaluated, investigating and recording the working time, occupational exposure poisons, the working equipment airtight degree, working equipment operation time of workers and an engineering control measure corresponding to each operation type, determining the hazard grade and the exposure grade of each occupational exposure poison, obtaining the risk grade of each occupational exposure poison in each operation type and risk level grades of the corresponding operating posts according to the poison hazard grades, the poison exposure grades and risk grade evaluation rules, and making a risk evaluation report and a risk control and management report. According to the chemical poison occupational hazard risk grade evaluation method for the petrochemical enterprises, occupational disease prevention resources are used reasonably, the occupational health management efficiency is obviously improved, and the occupational health prevention and control cost of the petrochemical enterprises can be effectively reduced.

The invention relates to a touch automatic protection-type nasopharyngeal swab specimen collection robot. The robot comprises a robot body, the robot body comprises a box type fixed base, an X-direction guide rail and a driving mechanism are mounted in the box type fixed base, a Z-direction gantry lifting mechanism is installed on an X-direction sliding block installed on the X-direction guide rail and the driving mechanism through a transverse plate, the Z-direction gantry lifting mechanism is provided with a cross beam, a Y-direction guide rail and driving mechanism is installed on the crossbeam, and a nasopharyngeal swab device is installed on a Y-direction sliding block of the Y-direction guide rail and the driving mechanism. Therefore, through automatic control of a controller, localautomatic operation or remote control in different places can be achieved under blind vision, and occupational exposure risks of medical staff are reduced or even avoided. Under the monitoring of endoscope lens, local automatic operation or remote control of the oropharyngeal swab can be realized. The standardization of specimen collection can be realized, the reliability of collection is improved, the access operation of the medical staff can be further reduced, and the labor intensity is reduced.

The invention provides a quantitative evaluation method for a risk of electric welder pneumoconiosis caused by electrowelding fume occupation exposure.The method comprises the steps that risk identification, exposure evaluation, dosage-reaction evaluation and risk characterization are adopted; a statistical distribution test is performed through SPSS software on the basis of on-site detection data of the electrowelding fume concentration to obtain probability distribution of the received fume concentration; a logistic model is selected to serve as a dosage-reaction model of the electric welder pneumoconiosis, model parameters are determined through population epidemiology data, and a dosage-reaction model used for evaluating the electric welder pneumoconiosis caused by electrowelding fume occupation exposure is obtained; Monte Carlo simulation of a carcinogenic risk value is performed by adopting crystal ball software, and the risk of the electric welder pneumoconiosis caused due to the fact that a crowd works in the electrowelding fume exposure environment for a long term is characterized.The quantitative evaluation method for the risk of the electric welder pneumoconiosis caused by electrowelding fume occupation exposure is completely presented for the first time and applied to occupational hazard evaluation of building projects and occupational hazard risk management of the electric welder pneumoconiosis.

The invention discloses a peripheral blood lymphocyte micronucleus detection kit and a detection method thereof. The detection kit provided by the invention comprises erythrocyte hemolysin, a red fluorescent dye solution, a lysis solution and a positive standard product, wherein the lysis solution comprises sodium chloride, sodium citrate, Triton X-114, green fluorescent dye and RNase; and a peripheral blood lymphocyte micronucleus detection method based on the kit and a flow cytometry detection method is provided. An experiment proves that the peripheral blood lymphocyte micronucleus detection kit and the peripheral blood lymphocyte micronucleus detection method are quick and accurate; on the premise of guaranteeing objective and true experimental results, the detection cost is reduced, and the experiment has repeatability and can be widely applied to clinical diagnosis and monitoring of occupational exposure genetic damage of healthy people, rehabilitation detection of genetic damage of cancer patient and cellular genetic science research.

The invention relates to a nuclear power plant work personnel occupational exposure analysis method; the method can minutely divide task types and personnel post types; the method can carry out exposure dosage statistics, and simultaneously considers three factors including work ticket, personnel in-out time, and operation content causing work personnel exposures. The method comprises the following steps: recording collective dosage; carrying out radiation protection measures when the recorded collective dosage approaches or exceeds the estimated collective dosage level; optimizing the collective dosage received by people for finishing corresponding work task in the following time. The method can easily carry out statistics analysis of the dosage data, thus controlling and reducing the collective dosage in operation and maintenance periods.

The invention provides a medical protective screen hood. The medical protective screen hood comprises a hood and a transparent protective screen which is connected with the hood and at least corresponds to eyes. The hood is made of a flexible and light material and comprises a head part arranged at the top of the head in a sleeving mode. The parts, surrounding the top of the head, of the inner edge and the outer edge of the head part are each provided with a head top fixing structure for clamping and fixing the head part, and a flexible supporting component is arranged at the position, corresponding to the forehead position of the top of the head, of the inner edge of the head part. The protective screen comprises a sheet which is made of a hard and elastic material and at least covers the eyes. After being disinfected and sterilized, the medical protective screen hood can comprehensively and integrally protect the head, the neck, the face and the eyes of a medical worker in a surgery or operation process, and therefore occupational exposure caused by splashing of body fluid or other substances is avoided. In addition, the medical protective screen hood is stable to wear, easy to use, comfortable to wear, light, convenient to use, ventilated and capable of preventing mist and being adjusted in a telescopic mode, fits the head structure of the human body, and enables a wearer to conduct operations conveniently.

The invention relates to a multifunctional medicine bottle opening ampoule assisted folding device. The defect that the medical personnel manually open lots of medicine bottles every day is overcome, nosocomial infection and occupational exposure caused by breaking off the ampoule bottles so as to scratch fingers are avoided, the fingers are protected, and the pain is reduced. The device is comfortably and safely used, and the working efficiency is greatly improved. The device can be made of stainless steel or medical high polymer materials, wherein a grinding wheel and a grinding wheel sheath for cutting the ampoule necks are arranged in the device and are fixed on a plate body through a screw and a nut. The device also comprises a handle at an opening of a bagged liquid bottle and a bottle opener for opening the bottle covers. The device can be widely applied to cutting and breaking various types of ampoules.

The invention relates to a one-step method preparation process of treatment type drug resistant AIDS (acquired immunodeficiency syndrome) autologous plasma virus inactivated vaccine. Through blood collection, plasma separation and plasma virus inactivation, the vaccine is directly prepared; then, intravenous vaccination is performed; the whole process is completed in a sealed disposable consumable; the pollution risk in the preparation process can be effectively avoided; the vaccine preparation safety is ensured. The preparation process is simple; the cost is low; the inoculation procedure canalso be simplified; the technical requirements of large-dose (600 to 800ml) plasma virus inactivated vaccine inoculation are met. More importantly, the virus strain of the inactivated vaccine is froma patient self; the plasma is also from the patient self; the obvious safety, effectiveness and feasibility are realized. The principle of medical ethics is conformed; the problem of animal model lack of AIDS vaccine development can also be solved. The vaccine is applicable to the continuous treatment of AIDS patients with drug resistance and treatment failure, initial and conventional treatmenton AIDS patients without drug resistance, and emergent blockade treatment on occupational exposure persons.

The invention provides a radioactive drug activity real-time measuring/calculating method and system and relates to the technical field of acquiring radioactive drug activity. The system comprises a data entry module, a processing module and a display module. The data entry module is used for entering initial information and current information of a radioactive drug, wherein the initial information of the radioactive drug includes the initial activity, the initial volume and the activity detection time of the radioactive drug and the current information includes current time and the user-needed activity; the processing module is used for calculating the volume of the radioactive drug needed by a user according to the initial information and the current information of the radioactive drug; the display module is used for displaying the volume of the radioactive drug needed by the user. Based on an isotope attenuation law, activity measuring and calculating replaces an on-site activity measuring process; operating personnel can perform one-time extracting according to a calculated drum volume and there is no need to measure the activity repeated on site, so that the radioactive isotope contact time of workers is reduced and the occupational exposure dose of workers is reduced.

An artificial membrane breaker solves the problem that there is no special membrane breaker in clinic, which may lead to occupational exposure of medical staff, and may cause maternal and newborn injury. The utility model comprises a vertical cylinder, wherein the lower end of the cylinder is fixedly connected with the box body through a connecting plate; The upper end of the cylinder body is fixed with a conical sealing ring, the upper end of the sealing ring is larger than the lower end, the lower end of the cylinder body is fixed with a sealing plug, a hollow fixing column is slidably arranged in the cylinder body, the upper end face of the fixing column penetrates the sealing ring, and the lower end of the fixing column penetrates the cylinder body and is slidably connected with the box body. The fixing column is provided with a vertical sliding needle, the lower end of the needle is rotatably connected with a lead screw, the fixing column is divided into an upper column and a lower column through a step, the lead screw is threadably connected with the lower column, and the lower end of the lead screw penetrates the lower column and is fixedly connected with a second gear. A gear shaft capable of vertically sliding is arranged in the housing, and a first unidirectional gear, a second unidirectional gear, a third unidirectional gear and a fourth unidirectional gear are sequentially arranged on the gear shaft from the top to the bottom.

The invention relates to a method for screening and verifying taurine being a molecular marker of a low-dose ionizing radiation injury of a human body. A first-line worker is used as a low-dose radiation exposure group, office personnel are used as a control group, and the screening of low-dose radiation injury molecular markers is performed on low-dose radiation occupational exposure people based on a non-targeted metabonomics method. It is screened and verified that the taurine can be used as a molecular marker of low-dose radiation injury of a human body, and compared with other molecular markers of radiation injury, the taurine can reflect the biological injury effect of professional people under low-dose radiation irradiation more systematically; samples used for taurine detection, such as blood, urine and the like, are easy to obtain, and therefore, the method has practical significance in application, and has the multiple advantages of short required time, strong specificity, high reliability, low environmental risk and the like.

The invention discloses a laparoscope waste gas collection and filtering device. The tail end of a main pipe is communicated with a filter; an outer conical locking connector is mounted at the front end of the filter; a mist suction cover is arranged at the periphery of the filter; an outer wall of the main pipe is provided with an adjusting ring for adjusting the outer diameter of the main pipe and controlling the size of airflow and negative pressure; the main pipe is internally provided with a one-way valve; a far end of the main pipe is connected with a negative-pressure suction pipe; and a suction connection pipe is mounted at the rear end of the mist suction cover. The laparoscope waste gas collection and filtering device can be used for effectively collecting waste gas generated in a laparoscope surgery process, so that occupational exposure of medical personnel in the surgery process can be further reduced.

The invention provides a novel slide cleaning device. The device comprises a first cleaning pipe and a second cleaning pipe. The second cleaning pipe is flexibly installed at the upper end of the first cleaning pipe; a first water pump is flexibly installed at the lower end of the first cleaning pipe; a throwing bin is fixedly installed on the outer surface of one side of the first cleaning pipe;a second water pump is flexibly installed on one side of the second cleaning pipe; a coverslip settling pipe is flexibly installed on the side, away from the second water pump, of the outer surface ofthe lower end of the second cleaning pipe; a glass slide settling pipe is flexibly installed on the outer surface of the lower end of the second cleaning pipe and positioned on one side of the coverslip settling pipe; and a filter net is flexibly installed on the other side of the second cleaning pipe. The slide cleaning device can rapidly separate coverslips and glass slides and clean and categorize the slides, operators can be protected from occupational exposure, slide cleaning efficiency is improved, and meanwhile, water overflow from a throwing opening in the process of cleaning can be prevented.

The invention discloses an intelligent biological recognition automatic blood sampling system combined with the network technology. The system comprises an intelligent biological recognition apparatusand an automatic blood sampling apparatus, wherein the intelligent biological recognition apparatus comprises a camera, a biological radio frequency sensor, a Type B non-contact IC card reader, an information digital memory and a bar code printer, the camera, the biological radio frequency sensor and the Type B non-contact IC card reader collect identity information and store the identity information into the digital memory, and the bar code printer is used for printing a blood sampling card with the identity information; and the automatic blood sampling apparatus comprises a full-automatic blood sampling arm, a blood sampling needle telescopic cylinder, a blood sampling needle clamping apparatus, a blood sampling needle storage bin automatic feeding apparatus, a blood sampling card clamping apparatus, a blood sampling card storage apparatus, a blood sampling auxiliary apparatus, a motor and a control apparatus. According to the system, the accuracy of the identity information of a detected person is guaranteed, the workload and occupational exposure risks of medical staff are reduced, a non-contact blood sampling self-service mode between blood sampling and supplying persons is provided, and a large-scale intelligent medical treatment and DNA database can be constructed.

The invention discloses a sampling and identifying method for micro-plastic in dust in a workplace and application thereof. Micro-nano plastic exposure risk investigation of an injection molding post is performed in a plastic production and processing enterprise, according to the application characteristics of different micro-nano plastic detection technologies, a mass spectrometry method and an infrared spectrometry method are selected to identify and analyze plastic raw materials involved in the operation process so as to define the characteristics of the to-be-detected micro-nano plastic target substance related to the operation. On the basis, a fixed-point sampling method is adopted to carry out workshop atmosphere sampling at the injection molding operation post. Then, the filter membrane is put under a light microscope to preliminarily observe the morphology and size of the dust, and the chemical components of the dust is identified by adopting an infrared spectroscopy method. In combination with field sampling and laboratory characterization data, the potential occupational exposure risk of the micro-nano plastic aerosol in the workplace is revealed.

The invention provides a surgical cart for the anesthesiology department. The cart includes a tray, a storage cabinet and cart frames; the storage cabinet is fixedly connected to the bottom of the tray, the cart frames are fixedly connected to the four corners of the tray and the four corners of the storage cabinet respectively, and the tray is internally provided with an apparatus placement groove, an injection placement groove and a disinfection placement groove; sliding grooves are correspondingly formed in the inner walls of the two sides of the tray, and at least one clapboard is slidingly connected between the two sliding grooves. Since the clapboards can slide in the sliding grooves, the spaces for storing medical apparatuses or medicine can be adjusted, the stability during placement of the medical apparatuses or medicine is effectively guaranteed, and the working efficiency is improved; a suspended trash bin is used for placing storage boxes of medical waste, medicinal liquidbottles and other objects and can prevent waste or the apparatuses from being overturned, and the occurrence of occupational exposure risk factors is avoided. Meanwhile, the surgical cart for the anesthesiology department is maintained tidy, and the cart is convenient to use, capable of improving the working efficiency and suitable for production and usage and has a great development prospect.

A medical single-cannula anti-blocking drainage tube for hyperthermic intraperitoneal chemotherapy based on replacement of an inner tube belongs to the field of medical instruments. According to the technical scheme, a single-cannula channel is constructed to guarantee the circulating flow requirement of hyperthermic intraperitoneal chemotherapy, and when a pipeline is blocked, blockages in the inner tube are removed in time through the technical method of replacing the inner tube through sterile operation. In addition, damage to the machine body is small in the inner tube replacing process, and the operation is easy. In addition, the replacement of the inner tube is generally performed before the hyperthermic intraperitoneal chemotherapy is performed such that the occupational exposure ofmedical personnel to chemotherapeutic drugs is avoided. Besides, on the premise that the hyperthermic intraperitoneal chemotherapy is carried out smoothly and the clinical treatment effect of a tumorpatient is improved, the cost of the technical scheme can be greatly reduced.