80results about How to "Reduce the risk of contagion" patented technology

The invention discloses a dual-band self-adaptive intelligent temperature measurement face recognition system, which accurately matches a visible light image with an infrared image through an image fusion technology, optimizes a recognition algorithm for a wearing state of a mask, and can intelligently detect the temperature of an effective region. When the body temperature of a person is abnormal, an alarm can be given automatically; if the person is in a face database, assistance in identifying the person and recording the name of the person is carried out. The system is an intelligent safety epidemic prevention monitoring system integrating a visible light wave band, an infrared wave band, a temperature measurement function, a face detection function, a face recognition function and a face recognition function under the condition that a mask is worn, and therefore non-contact, low-error and high-efficiency blackbody-free ultra-precision body temperature detection application is achieved.

The invention discloses a new coronal pneumonia nucleic acid detection box with an automatic nucleic acid collection function. The detection box comprises a detection box body, an operation cavity isformed in the detection box body, a door opening cavity with a rightward opening is formed in the inner wall of the left side of the operation cavity, and a detection cavity penetrating through the inner wall of the left side of the door opening cavity is formed in the inner wall of the left side of the door opening cavity. The detection box is small and exquisite and can be carried about, duringuse, a subject only needs to bite a device on the machine, sampling of nucleic acid detection can be performed on the subject, after use, the interior of the machine can be disinfected, so that the aggregated infection risk caused by the fact that the examinees go to a hospital together can be greatly reduced, the pressure of front-line medical workers can be greatly reduced, the nucleic acid detection sampling efficiency can be improved, and the infection risk can be reduced.

The invention discloses an intelligent body temperature detection and sterilization disinfection system. The intelligent body temperature detection and sterilization disinfection system comprises a building main body structure which is movably installed and integrates body temperature detection and sterilization disinfection functions; the building main body structure comprises a passage for pedestrians to walk through; a disinfection foot pad layer used for disinfecting soles of the pedestrians passing through the passage is arranged on the ground of the passage; a gate machine is arranged onthe passage; a controller with a preset human body detection temperature value is arranged in the gate machine; the controller is connected with an infrared temperature detector or a thermal imagingtemperature measuring device which is arranged on the passage, located at the front end of the gate machine and used for detecting the temperature of a human body; the controller is further connectedwith a gate driver which drives the gate machine to be opened for releasing when the temperature of the human body of a pedestrian is detected to be lower than the preset human body detection temperature value. The functions of automatically detecting the human body temperatures of the pedestrians and externally sterilizing and disinfecting the pedestrians can be realized.

The invention provides a wireless stethoscope, which relates to the field of medical instruments and comprises a chest piece and a mobile terminal, the chest pieces are placed on all parts of the bodyof a user respectively to collect sound signals of all the parts and send the collected sound signals to the mobile terminal in a wireless transmission mode. The mobile terminal is used for carryingout diagnosis on the sound signal in combination with the trained analysis diagnosis network so as to give an auscultation result to the user; and a cloud system is used for carrying out structured and unstructured data analysis according to the sound signal uploaded by the mobile terminal, the auscultation result, the previous medical history of the user, the genetic medical history, the genomicsand the related cases, mining hidden information of the sound signal and carrying out disease prediction so as to further diagnosis the physical health condition of the user. The system is suitable for multifunctional wireless auscultation and intelligent diagnosis analysis in occasions such as hospital medical systems, intelligent family health monitoring and high infection risk, and has a wideapplication prospect.

The invention provides an elevator control method and device capable of monitoring personnel body temperature and flow and a storage medium. The control method comprises the steps that before a calling instruction of a passenger is executed, the temperature of the passenger is monitored, and the floor selection authority of the passenger is controlled and / or an alarm is given according to the monitoring result; the passenger needs to scan a two-dimensional calling code or wake up a calling instruction through a calling application program preset in a mobile terminal, the body temperature of the passenger is monitored, personnel information is registered, the floor selection authority of the passenger is controlled and / or an alarm is given according to a body temperature monitoring result,and meanwhile the flow information of the passenger is collected and recorded. According to the elevator control method capable of monitoring the personnel body temperature and flow, all links and thewhole process of using the elevator by the passenger can be in zero contact with elevator components, an elevator car or elevator buttons are effectively isolated to serve as bacteria / virus infectioncarriers, and the safety of the passenger taking the elevator is guaranteed.

The invention discloses a manufacturing method for a touch screen with an antibacterial layer, and relates to the technical field of touch screens. The manufacturing method comprises the following steps: uniformly dispersing the granules of a nano-scale metal material into a chemical liquid for surface treatment, and keeping the concentration of the chemical liquid between 20ppm to 500ppm; uniformly coating the surface of the cover plate of the touch screen with the treated chemical liquid; and carrying out heat treatment on the uniformly-coated chemical liquid, completely evaporating a solvent in the chemical liquid, and closely attaching the granules of the nano-scale metal material onto the surface of the cover plate of the touch screen, thereby forming the antibacterial layer on the cover plate. The manufacturing method disclosed by the invention is simple and practicable; and the nano-scale metal material is uniformly and firmly attached onto the surface cover plate of the touch screen, high in antibacterial capacity, capable of reducing the routes and probability of bacterial infection, time-saving and labor-saving, capable of effectively protecting an electronic informationdevice and prolonging the service life of the electronic information device, and easy to popularize and use.

The invention discloses a non-contact type safe-packaging medical garbage collecting device and belongs to the technical field of garbage cans. The non-contact type safe-packaging medical garbage collecting device comprises a box body, a disinfection system and a controller; the sidewall of the upper end of the box body is provided with a garbage feeding opening; a first sensor is arranged insidethe box body; an internal part, positioned at the garbage feeding opening, of the box body is provided with a first flow guide plate; the disinfection system is arranged inside the box body and corresponds to the first flow guide plate; the box body is internally provided with a collection groove; the collection groove is positioned under the discharging end of the first flow guide plate; a position, corresponding to the collection groove, of one sidewall of the box body is provided with a box door; the collection groove is in sliding fit with the box body; and a controller is arranged insidethe box body. The non-contact type safe-packaging medical garbage collecting device is convenient to use; when garbage is fed into the garbage can via the garbage feeding opening, the disinfection system is used for disinfecting the garbage, subsequently the garbage is crushed and then falls into a garbage bag; and an opening sealer can be used for automatically sealing the opening of the garbagebag, thus preventing a cleaner from virus infection caused by contacting the garbage when the cleaner is collecting the garbage.

The invention provides movable safety detection and disinfection equipment. The equipment comprises a safety channel structure, a telescopic device, a detection device, a disinfection device and a control device; a walking channel for pedestrians or vehicles to pass through is formed in the safety channel structure, and the walking channel comprises two opposite openings; the telescopic device isarranged at the bottom of the safety channel structure and is provided with a moving stroke vertical to the extension direction of the safety channel structure; the detection device is arranged in thesafety channel structure and is used for detecting body temperatures of the pedestrians in the walking channel; the disinfection device comprises a disinfection blanket structure arranged at the bottom of the walking channel and a disinfection spraying mechanism arranged on the safety channel structure, wherein the disinfection spraying mechanism has a moving stroke of reciprocating along the extension direction of the walking channel; and the control device is arranged on the safety channel structure and is electrically connected with the telescopic device, the detection device and the disinfection device. The movable safety detection device provided by the invention aims to solve the problem that in the conventional technology, lack of a device for intelligent detection and disinfectionof people or vehicles in various places brings a certain potential safety hazard to health of pedestrians and brings a certain potential safety to management and control of people.

The invention relates to a domestic garbage sterilization and disinfection sanitary collection bucket, and belongs to the field of environmental sanitation facilities and daily necessities. The domestic garbage sterilization and disinfection sanitary collection bucket is composed of a bucket body and a bucket cover with an ultraviolet and ozone generation structure, bacteria or germs in domestic garbage can be killed while the domestic garbage is collected, and environmental pollution caused by the bacteria or germs is reduced from the source. The domestic garbage sterilization and disinfection sanitary collection bucket is especially suitable for collecting the domestic garbage in the field of environmental public sanitation and collecting high-risk garbage in public places such as hospitals, routes of infection can be cut off from the source, and the safety of the environment and the public places such as the hospitals are improved.

The invention discloses a hospital waste gas treatment device and method which can sterilize and disinfect waste gas exhausted by a hospital and can prevent the hospital waste gas from carrying viruses, disease treatment bacteria and fungi. The hospital waste gas treatment device comprises an air suction pipe, a U-shaped ultraviolet sterilization pipe, an exhaust fan, a first filter, a booster fan, a disinfection tank and a second filter. The hospital waste gas treatment method comprises the steps that S1, the air volume of an exhaust fan is adjusted to enable the air volume in an air suctionpipe to be 5-15 m <3> / min; S2, the wavelength of an ultraviolet lamp is controlled to be 250-270 nm through an ultraviolet lamp controller; S3, a booster fan is adjusted to enable the air pressure torange from 30 pa to 80 pa; S4, 84 disinfectant with the effective chlorine concentration of 1000 mg / L is added into the disinfection tank; and S5, a heating device is arranged at the bottom of the disinfection tank, so that the temperature in the disinfection tank is 30-45 DEG C. By adopting the hospital waste gas treatment device and method, the risk of disease infection caused by hospital wastegas can be effectively reduced; the purification effect can be effectively improved; and the hospital waste gas treatment cost is reduced.

The invention relates to a thiazole phosphine and metalaxyl granule and a preparation method thereof. The thiazole phosphine and metalaxyl granule includes the components by weight: 0.1%-20% of thiazole phosphine, 0.1%-5% of metalaxyl, 70%-80% of carrier attapulgite particles, 0.5%-3% of a dispersing agent, 0.1%-2% of a sustained-release agent, 0.1%-5% of a binder, and the balance a filler. The granule of the present invention is granulated by a film coating method. The invention effectively combines the control of plant nematodes and soil-borne diseases, uses resources efficiently, scientifically and rationally, has important significance on environment protection, and plays a positive role in reducing agricultural inputs and promoting agricultural output and income.

The invention discloses an access control gate starting and stopping control method. The method comprises the following steps: receiving natural light image information and infrared image informationof a person to be detected; performing face detection by using the natural light information to obtain face feature information; judging whether the person to be detected wears a mask or not accordingto the face feature information to obtain mask wearing information; carrying out temperature detection by utilizing the infrared image information to obtain body temperature information of the to-be-detected person; acquiring corresponding gate starting and stopping information according to the mask wearing information and the body temperature information; and sending the gate starting and stopping information to an access control gate, and controlling the starting and stopping of the access control gate. The face recognition technology and the infrared temperature measurement technology arecombined, starting and stopping of the gate at the entrance guard are determined according to a preset rule, and mask wearing inspection and visitor body temperature measurement without manual intervention are achieved. The invention further provides an access control gate starting and stopping control device and equipment, and a computer readable storage medium.

The invention relates to the technical field of medical equipment, in particular to an automatic ultrasonic probe coating device. According to the automatic ultrasonic probe coating device, a display screen is arranged on the front side of a body, a sealing cabin door is arranged on the upper surface of the body, a coupling agent sealing cabin is arranged below the sealing cabin door and is a semispherical cavity, a nozzle is arranged below the coupling agent sealing cabin, a nozzle switch is arranged on the nozzle, the body around the nozzle is an arc surface provided with a sensor A, a control panel cabin is also arranged at the upper part of the body, a body inner cabin is arranged at the back of the body, a body back board is arranged on the back surface of the body inner cabin, a coating motor is mounted on the body back board, the output end of the coating motor is connected with a planetary gear train, output of the planetary gear train is connected with a preservation film roller, a lithium battery cabin is arranged below the body inner cabin, a U-shaped base is also arranged below the body, and a sensor B is also arranged on the lower slope of the body. The device can automatically spray a coupling agent to coat an ultrasonic probe, and is convenient, efficient and good in user experience.

The invention provides a method for co-culturing natural killer cells by using umbilical cord mesenchymal stem cells. According to the method, umbilical cord mesenchymal stem cells with the same source as an umbilical cord blood donor and nucleated cells in umbilical cord blood are co-cultured to provide a microenvironment for promoting proliferation and differentiation of the nucleated cells in the umbilical cord blood, in-vitro large-scale amplification of nucleated cells in umbilical cord blood to NK cells and precursor cells of the NK cells is achieved, the requirement for umbilical cord blood raw materials in subsequent large-scale production of the NK cells is lowered, application to industrial production of subsequent NK cell therapy products is achieved, and the umbilical cord blood contains hematopoietic stem cells capable of reconstructing a hematopoietic and immune system of a human body and can be used in hematopoietics stem cell graft. Therefore, the umbilical cord blood becomes an important source of hematopoietic stem cells, particularly a source of hematopoietic stem cells without blood relationship, and is also a very important human biological resource.

The object is to provide an ampoule usable as a syringe, and a syringe unit which are easy to handle, excellent in quantitative accuracy, and further more excellent in hygienic aspect. The above object is solved by an ampoule usable as a syringe comprising: a front edge portion (4) which is removed when the ampoule is used; an ampoule body (2) which can accommodate a drug solution (10); and a liquid infusing portion (3) connecting the front edge portion (4) and the ampoule body (2); the ampoule body (2) being able to place a movable stopper (5) in contact with an internal surface of the ampoule body (2), and being able to accommodate the drug solution (10) hermetically-sealed in the through-hole (6) between the movable stopper (5) and the sealing portion (4a).

The present invention provides a throat swab collection and protection device for reducing a risk of respiratory virus infection. The throat swab collection and protection device for reducing the riskof the respiratory virus infection comprises an operating table, a thin membrane and an adjustment assembly; operating holes are arranged in the operating table; the thin membrane is connected with operating gloves, the thin membrane covers the operating table, one side, close to the thin membrane, of the operating table is a patient side, one side, away from the thin membrane, of the operating table is an operating side, and the operating gloves can extend into the operating holes to conduct throat swab collection; and the adjustment assembly is connected with the thin membrane, so that theadjustment assembly can adjust the thin membrane to move along the operating table. The provided throat swab collection and protection device for reducing the risk of the respiratory virus infection can effectively reduce the risk of the infection of medical staff during throat swab collection.

The invention relates to the technical field of medical devices, and particularly relates to a pediatric vomiting device for digestive infection. The pediatric vomiting device comprises a tank body. Avomiting cover is arranged on the upper end of the tank body. The opposing side walls of the vomiting cover are rotatably connected with a partition plate. The lower end of the vomiting cover is provided with a snap ring. The snap ring is in snap fit with the upper end of the tank body. The interior of the tank body is provided with a bag sealing assembly. One side of the tank body communicates with a storage cavity. The interior of the storage cavity is provided with a screw transmission assembly. The tank body is also internally provided with a sealing reminder assembly. The upper end of the storage cavity is also provided with a cleaning assembly. By the sealing reminder assembly, medical personnel can be reminded to seal and replace a plastic bag when the medical plastic bag is full of vomit. When the medical plastic bag is full of vomit, a connecting plate is pressed down. The connecting plate drives a metal sheet to contact with an electrical contact 1 and an electrical contact2 to form a closed circuit, and a buzzer is powered on to remind the medical personnel.

An indoor central environment management system for neonates comprises a central control server, a central control platform, a smart controller, and measuring instruments which are arranged in a neonate room, include a humiture sensor, a brightness sensor, an oxygen density sensor and a carbon dioxide density sensor and are respectively connected with the smart controller, an air-exchange apparatus for venting and introducing fresh air, constant temperature and humidity machine and / or air conditioner for retaining constant temperature and humidity, an oxygen supplying device for supplementing oxygen, and a lighting device for lighting. System control is used to realize personnel and environment management, the environment parameter indexes are adjusted to reach designated data scope, thereby preventing the large-scale infection possibility of neonates in large environment. Infection is prevented maximally, and infection and contamination of neonates are effectively reduced, and optimal environmental state is provided.

The invention discloses a triage method, a triage system and a robot. The method is executed by the robot, and comprises the following steps: identifying a health code of a user; if the health code passes identification, measuring the body temperature information of the user; and receiving triage information input by the user, and determining a triage result for the user according to the triage information and the body temperature information of the user. According to a technical scheme provided by embodiments of the invention, the robot is used for replacing manual triage operation, so personnel contact is reduced, infection risks are reduced, and the situation of shortage of medical personnel is also relieved.

The invention discloses novel highway tunnel movable water spray fire extinguishing equipment which comprises a tunnel. Fixing plates are fixedly connected to the positions, close to the top, of the inner walls of the two sides of the tunnel correspondingly, and the front ends and the rear ends of the fixing plates are arranged close to front holes and rear holes of the tunnel correspondingly; a plurality of reinforcing rods which are evenly distributed in the longitudinal direction are vertically and fixedly connected to the positions, corresponding to the fixing plates, of the inner top wall of the tunnel, the lower end of each reinforcing rod penetrates through the corresponding fixing plate and is fixedly connected with the lower end of the corresponding fixing plate, and steel rails are fixedly connected to the positions, close to each other, of the upper ends of the two fixing plates; and the length of the steel rails is consistent with that of the fixing plates, a mounting plate is arranged on the upper portions of the two steel rails, and moving grooves are formed in the upper ends of the two steel rails. The novel highway tunnel movable water spray fire extinguishing equipment has the advantages that the equipment can quickly reach an accident fire position to extinguish fire through remote control, the fire can be controlled in time, people do not need to go to the fire position, and the safety is high.

The invention relates to a fosthiazate and hymexazol granule. The fosthiazate and hymexazol granule comprises the following components in percentage by weight: 0.1-20% of fosthiazate, 0.1-5% of hymexazol, 60-80% of a carrier attapulgite grain, 0.5-3% of a dispersing auxiliary agent, 0.1-2% of a slow release agent, 0.1-5% of a bonding agent and residual fillers. The invention further discloses a preparation method of the fosthiazate and hymexazol granule; and the fosthiazate and hymexazol granule effectively combines the effects of preventing and treating plant nematode diseases and soil borne diseases, efficiently, scientifically and reasonably utilizes resources, has very important meanings on protecting an environment, and has the active propelling effects of reducing the agricultural input and increasing both production and income of agriculture.

The invention discloses a ventilation device for a hospital infectious disease department ward. The ventilation device comprises an exhaust device, an adsorption filtration treatment device, a disinfection treatment device and a gas-liquid separation device, wherein the adsorption filtration treatment device is communicated with the exhaust device; the disinfection treatment device comprises a disinfection box, an atomization generator and an atomization spray pipe; the disinfection box is provided with a first cavity and a second cavity; the second cavity is provided with an air inlet and an exhaust port; the air inlet is communicated with the adsorption filtration treatment device; the atomization generator is arranged in the first cavity; the atomization spray pipe is arranged in the second cavity and communicated with the first cavity; and the gas-liquid separation device is communicated with the exhaust port. According to the ventilation device for the hospital infectious disease department ward provided by the embodiment of the invention, air in the ward can be effectively sterilized and disinfected and then exhausted, the treated air is cleaner and safer, and the infectious risk in the environment is reduced.

The invention relates to healthcare fire clearing tea which is formed by adding water into the following components in powder form: 0.5g of saffron, 0.6g of rose, 0.5g of pine needles, 6g of fructus momordicae, 0.1g of kalanchoe blossfeldiana leaves, 0.12g of radix lithospermi, 0.03g of aloe peel, 0.8g of ivy leaves, 0.04g of Notarchus powder, 1.6g of fructus lycii, 0.01g of fructus ulmi, 0.28g of cymbidium erythraeum leaves, 0.4g of maranta leuconeura variegata leaves, 0.45g of radix astragali and 0.65g of garlic peel. The components are added into a container with 2,500ml of water; the mixture is heated while stirred; after the mixture is boiled, the heating is continued to keep the boiling for 3 minutes before the heating is stopped; the product is naturally cooled to obtain a finished product. The healthcare fire clearing tea provided by the invention has good taste, is easy to absorb by human bodies, and realizes a perfect anti-cancer healthcare function; with mild characters, the healthcare fire clearing tea can be taken for a long time.

The invention relates to the technical field of medical instruments, in particular to a medical instrument cleaning device capable of preventing aerogel infection. The medical instrument cleaning device capable of preventing the aerogel infection comprises a table body, a cover door is arranged on one side of a cover body, a high-pressure water gun is further arranged on the cover body, the cover body is arranged at the top end of the table body, at least two openings are formed in the front side of the cover body, gloves are arranged on the openings, a ventilation pipe is further arranged on a top plate of the cover body and is connected with air draft equipment, and an ultraviolet lamp sterilization device is further arranged in the cover body and is used for irradiating the interior of the cover body. According to the medical instrument cleaning device, the cleaning effect of instrument cleaning is improved, in addition, air in the cover body is sterilized and disinfected, the content of pollutants and germs in pumped air is decreased, and therefore the risk of outdoor pollution and infection is reduced.

The invention relates to a method for realizing epidemic situation dynamic information analysis in an infectious disease epidemic situation outbreak period by using a graph model, and the method comprises the steps: building a graph model according to the determined attribute type of a monitored person and the activity place information of the monitored person based on the first definite case information obtained in advance; determining an infectious disease infection condition score value of a preset area within a preset time according to the graph model; and determining a close contact theoretical value of the area according to the score value of the infectious disease infection condition to obtain corresponding epidemic situation dynamic information. The invention also relates to a corresponding system, device, processor and storage medium. By adopting the corresponding method, the system, the device, the processor and the storage medium of the invention, a contact network diagram between people in an epidemic outbreak period can be intuitively formed by using a dynamic graph model, and close contact persons or potential infected persons can be quickly found according to an epidemiological path, so further outbreak of infectious diseases is prevented.

The invention discloses an electric needleless injector, and relates to the field of injectors. The electric needleless injector comprises an injector shell and an injection key; one end of the injector shell is provided with an injection port; the other end of the injector shell is provided with a charging interface; the outer wall of the injector shell is provided with a medicine tube access port; one end, close to the injection port, of the injector shell is provided with a pressurizing indicator lamp; a power switch, an electric quantity display screen and the injection key are inlaid in the outer wall of the injector shell; and the outer wall, close to the charging interface, of the injector shell is provided with an injection completion indicator lamp. According to the invention, painless injection is achieved; an injection hole is small; the injection speed is very rapid; a user cannot feel pain; the electric needleless injector does not have a traditional needle, so that the user cannot resist the injector mentally; and the electric needleless injector is simple to operate, small in size and convenient to carry, can be used anytime and anywhere, accelerates drug absorption, disperses drugs to subcutaneous tissues, takes effect quickly, reduces the infection risk, and reduces the use cost.

The invention relates to the field of in-vitro diagnostic reagents, in particular to application of a reagent for detecting biomarkers in urine to preparation of a diagnostic kit for new coronal pneumonia. According to the invention, urine is used as a biological sample, so that the collection of a detection sample is greatly facilitated, and the infection risk of new coronavirus is reduced; the collection of the urine is non-invasive, so that the compliance of a person to be detected is also greatly improved; due to the fact that the detected urine indexes are few, the detection cost is remarkably reduced, the detection time is shortened, medical institutions can carry out the method more conveniently, meanwhile, the detected urine indexes are few, and the detection accuracy is equivalent to that of a traditional method. Therefore, the urgent requirement of clinical non-innovative coronary pneumonia examination can be well met.

The invention relates to the technical field of household appliances, and discloses a refrigerator which comprises a cabinet body, at least one box body, drawers, locking mechanisms and sealing strips, the number of the drawers is consistent with that of preservation chambers, and the cabinet body is provided with a refrigerating chamber. The box body is installed in the refrigerating chamber, at least two preservation chambers are arranged in the box body, the preservation chambers are arranged in a mutually separated mode, and air doors are arranged on the rear sides of the preservation chambers respectively. The drawers are arranged in the preservation chambers in a one-to-one correspondence and push-pull manner, and each drawer is provided with an abutting surface. The locking mechanisms are mounted in the preservation chambers and / or on the outer sides of the drawers; and the sealing strips are arranged between the preservation chambers and the drawers. When the drawers are pushed into the preservation chambers, the drawers and the box body are kept in a locked state through the locking mechanisms, and the rear side edges of the drawers and the box body are kept sealed. According to the refrigerator adopting the technical scheme, raw materials and cooked materials can be stored separately, odor tainting is prevented, bacteria resistance, bacteriostasis and oxidation resistance are achieved, food materials are prevented from generating harmful products, and the food materials stored in the refrigerator are kept fresh to the maximum extent.

The invention belongs to the technical field of medical instruments and relates to a percutaneous dilatational tracheostomy (PDT) tube instrument set capable of reducing cross infection. The instrument set comprises a puncture needle, an injector, a guide wire, a guide wire fixator, a dilator, a tracheostomy tube, a tube catheter and an isolation hood. The PDT tube instrument set constructs a local isolation space at an operation part of a patient and locks an infection source to reduce the required protection grade so as to reduce the burden of medical staff in personal protection, and aims to provide daily available effective protection while serving as an operation tool of tracheostomy tube operation. In addition, the dilator is of an expandable / contractible net cage type structure, canbe easily inserted into a puncture stoma in a small diameter state and can expand in a large diameter state, so that expansion of the trachea and pretracheal tissue of the patient can be completed through one step. Compared with an existing PDT tube instrument requiring multi-step expansion, the PDT tube instrument set can reduce the number of required instruments and the operation steps and shorten the operation time.