32results about How to "Prevent extravasation" patented technology

The utility model discloses a medicine application nursing appliance, which belongs to the technical field of medical instruments and comprises a substrate layer, a medicine bag cavity, an anti-seepage ring, a heating component and a displaceable pressing component. When the medicine applying nursing appliance is used, the medicine applying nursing appliance is stably adhered to the umbilical region of a user through the adhering edge on the base layer, the medicine bag in the medicine bag cavity acts on the umbilical region for treatment, and the movable pressing assembly can be moved to the umbilical region or near the Tianshu point for intermittent pressing during the period. In addition, the heating assembly can be started to conduct low-temperature heat conduction on the application area, integration of medicine, hot compress and acupoint pressing is achieved, and the treatment effect is improved. The medicine bag is arranged in the medicine bag cavity, replacement is convenient, medicine liquid leakage can be prevented, and use convenience is improved.

The invention provides a portal vein right atrium circulating tube under an endoscope, and belongs to the field of medical instruments. Comprising a tube body and two insertion tubes, the two insertion tubes are fixedly connected to the two ends of the tube body respectively, the tube body is straight and made of hard materials, and the two insertion tubes can be bent and made of elastic materials; when the device needs to be used, due to the fact that the tube body and the two insertion tubes are straight when not used, the two insertion tubes are inserted into the portal vein or the right atrium respectively, after insertion is completed, the annular plate and the connecting plate are driven by the driving assembly to slide on the tube body, and the connecting plate drives the guide wire to slide in the guide groove; the guide wire firstly slides into the guide groove in the tube body from the guide groove in the insertion tube and then penetrates out of the tube body from the guide groove in the tube body, when the guide wire completely leaves the guide groove in the insertion tube, the insertion tube rebounds and bends, the tube body is limited, the insertion tube is prevented from being inserted into the portal vein or the right atrium to fall off, and therefore the use effect is improved.

The utility model discloses a kind of thyroid ablation post-neck ice compress band, including front cloth band, the middle part of front cloth band is equipped with rectangular through-hole, heat conduction layer is sewn in the inside of through-hole, the left side of front cloth band is sewn and has the storage assembly for placing ice bag, the both ends of front cloth band are sewn and have connecting band;The utility model connects first fixed band and second fixed band by connecting band at the both ends of the front cloth band with hollow, make overall form scarf style around patient neck, not only guarantee the reliability of ice compress, but also suitable for different population use, while setting heat conduction layer and storage assembly in the middle part of front cloth band, storage bag in storage assembly is divided into two areas by separation cloth for placing ice bag, so that it corresponds with heat conduction layer, heat conduction layer can efficiently transfer the temperature of ice bag to improve ice compress effect.

The application relates to the technical field of mechanical seals, and discloses a combined sealing water-cooling mechanical seal structure, which comprises a rear bearing seat end, a front bearing seat end, a positioning hole and a shaft groove. The inner sides of the rear bearing seat end and the front bearing seat end are provided with a pressure-bearing bearing mechanism which is used for replacing traditional bearings to reduce wear caused by vertical stress. The inner side of the pressure-bearing bearing mechanism is provided with a water-cooling cooling mechanism which is used for assisting heat dissipation. The periphery of the water-cooling cooling mechanism is provided with a sealing mechanism which is used for sealing and packaging structure. The pressure-bearing bearing mechanism comprises an inner bearing seat end, the two sides of the inner bearing seat end are provided with matching ring grooves, the side surfaces of the matching ring grooves are slidably connected with rotating shaft rings, and the two sides of the inner bearing seat end are slidably connected with eight roller shaft columns. The application enhances oil distribution uniformity, reduces local dry friction and heat accumulation, thereby comprehensively improving transmission efficiency, reducing maintenance frequency, and effectively preventing jamming and early fatigue failure.

The invention relates to the technical field of resource recycling type air-jet looms, in particular to a resource recycling type air-jet loom which comprises an air-jet loom body and a turbine box used for lubricating and cooling transmission roller gear accessories on the air-jet loom body, and the turbine box is fixedly connected to one side of the air-jet loom body. The turbine box is divided into a first box body and a second box body which are fixedly connected with each other, the first box body is detachably and fixedly connected with an oil inlet sealing cover used for injecting new oil into the turbine box, and a material storage groove used for collecting scrap iron sundries is formed in the bottom wall of the second box body. According to the technical scheme, engine oil circulates in an internal circulation mode, the temperature of the engine oil can be reduced, meanwhile, the engine oil in the turbine box is prevented from leaking out, meanwhile, the cleaning effect on scrap iron in the engine oil is improved, and then the transmission stability of gear accessories is improved.

The utility model discloses a tool rest combined type waterproof and dustproof mechanism of a machine tool, which belongs to the technical field of sealing structures and comprises a box body, the box body is fixedly connected with the machine tool, a fixed shaft is fixedly mounted in the box body, a cutter head is abutted against the fixed shaft, the cutter head is movably connected with the box body, and an elastic sealing ring and a V-shaped sealing ring are arranged at the joint of the cutter head and the box body. Two sets of sealing structures of the elastic sealing ring and the V-shaped sealing ring are arranged and matched with each other, the sealing effect on the connecting position of the cutter head and the box body is achieved, scrap iron and cooling liquid can be effectively prevented from entering the tool rest, protection on the tool rest is achieved, the stability of the tool rest of the machine tool is improved, the service life of the tool rest of the machine tool is prolonged, and the practicability of the waterproof and dustproof mechanism is guaranteed.

The invention relates to the field of hot rolling strip steel cooling headers, and discloses header cleaning and calibrating equipment which comprises two U-shaped pipes, the two U-shaped pipes are arranged on the left side of a water tank and extend into the water tank, two manual valves are fixed to the outer walls of the U-shaped pipes and communicate with the U-shaped pipes, and the U-shaped pipes are fixed to the left side of the water tank. A three-way pipe is arranged on the outer walls of the U-shaped pipes, two water inlet ends of the three-way pipe are respectively communicated with the two U-shaped pipes, a pressure gauge is fixed on the outer wall of the three-way pipe, and a pneumatic butterfly valve is fixed on the outer wall of the three-way pipe. According to the automatic cleaning device, through cooperation of the U-shaped pipe, the adjusting valve and the water pump, the automatic cleaning method for cleaning the multiple collecting pipe bodies at a time can be achieved, so that the cleaning efficiency is improved, the labor intensity of workers and the operation risk are reduced, the maintenance cost of spare parts is reduced, and through cooperation of the manual valve, the adjusting valve, the water pump and the flow meter, the cleaning quality of the collecting pipe is improved; and the flow of the header body can be tested and calibrated.

The utility model belongs to the technical field of flush valves, particularly relates to a coffee machine milk path flush valve, and aims to solve the problems that the production cost of parts is increased and the product occupies the assembly space of a coffee machine due to the fact that a switching valve is complex in overall structure and tedious in assembly process and needs a large number of parts, the following scheme is provided: the coffee machine milk path flush valve comprises a valve body, a first liquid inlet used for receiving pressure water is formed in one side of the valve body, a liquid outlet used for pumping milk is formed in the top of the valve body, the end cover is arranged at a valve port of the valve body, a second liquid inlet used for receiving milk is formed in the end cover, a rubber plug is slidably connected to the inner wall of the valve body, and a reset spring and a buckling assembly are arranged between the rubber plug and the end cover. The device is arranged on the valve body and the end cover so that the end cover can be rapidly mounted and dismounted. Under the condition that basic use requirements are met, the number of parts is greatly reduced, the cost of the parts is reduced in a large range, the assembly process is simplified, the length of a product can be reduced by half, and therefore the occupied assembly space of the coffee machine is reduced.

The faucet comprises a pipe body and a valve element installed at the tail end of the pipe body, the initial end of the pipe body is a water outlet end, a water outlet groove is formed in the pipe body in the length direction of the pipe body, the water outlet groove is communicated to the water outlet end of the pipe body and provided with a water outlet hole, a filter tip is arranged at the water outlet end of the pipe body, and the valve element is installed at the tail end of the pipe body. The outer circumferential wall of the filter tip and the inner circumferential wall of the water outlet hole are arranged in a threaded fit mode, a filter hole communicated with the water outlet hole penetrates through the filter tip in the height direction of the filter tip, a plurality of notches are formed in the outer circumferential wall of the filter tip in the height direction of the filter tip, a filter plate is inserted into each notch, each filter plate is arranged in the filter hole, and the filter holes are communicated with the filter holes. And the materials of all the filter plates are not consistent. The faucet solves the problems that in the prior art, a faucet only has a single filter element, and the filter element is difficult to disassemble, assemble and replace.

The invention discloses a pressure relief device for reducing water pressure outside an underground cavern. The pressure relief device comprises an outer cylinder, a steel base plate, a hinge, a spring and a bottom plate. The outer cylinder and the steel base plate are pre-buried in the reinforced concrete lining, the steel base plate is located on the outer edge of the open end of the outer cylinder, the two hinges are symmetrically installed in the outer cylinder through the springs, the bottom plate is fixedly connected with the steel base plate, and the drainage hole is formed in the bottom plate. The two hinges divide the interior of the outer barrel into an upper closed part and a lower closed part under the combined action of inner water pressure, outer water pressure and spring tension, when the inner water pressure difference and the outer water pressure difference are larger than the starting pressure difference set between the hinges, the device is started, and the spring is stretched; outer water enters from the upper end of the outer cylinder and then is discharged into the reinforced concrete lining through the water outlet holes through the gaps between the hinges, the hinges are reset and the device returns to the closed state along with the discharging of the outer water, the pressure difference is reduced, the spring contracts to enable the device to return to the closed state, different device starting pressure differences are set by adjusting the initial stretching amount of the spring, and the inner and outer water pressure difference is accurately controlled.

The invention discloses a method for detecting a venous access before high-pressure injection of a CT enhanced contrast agent, and relates to the technical field of CT examination. Whether the bearing capacity of the blood vessel of the patient can bear the standard injection speed of the contrast agent or not can be judged through pre-examination, if normal saline exosmosis or pain does not occur in the blood vessel of the patient in the pre-detection process, it is indicated that the blood vessel meets the high-pressure injection condition, and injection can be conducted according to the high-pressure requirement; if liquid exosmosis occurs during pre-detection, the blood vessel does not meet the high-pressure injection condition, and the blood vessel needs to be replaced additionally to ensure the treatment safety of the patient.

The invention discloses an aerosol generating product containing aerosol generating particles with a coating layer and a preparation method of the aerosol generating product, the aerosol generating product comprises the aerosol generating particles (2) with the coating layer, the aerosol generating particles with the coating layer are of a core-shell structure, the core of the aerosol generating particles is an aerosol generating particle body, and the coating layer is a coating layer. And the shell layer is a coating layer coated outside the aerosol generating particle body. The surfaces of the aerosol generating particles are coated, the coating layer on the surfaces of the aerosol generating particles can avoid the caking problem of the aerosol generating particles in the placing process, the fluidity of the aerosol generating particles in the filling process is improved, and the breakage rate of the particles in the filling process is reduced to a certain extent. In addition, the aerosol generated by heating the aerosol-generating particle body can still be smoothly and gradually released through the coating layer, and the fuming amount of the aerosol-generating particle body is not affected.

The application discloses a kind of underground storage tank liquid flow battery systems and its leakage monitoring control method.System includes the outer tank being vertically arranged in underground shaft, the inner tank being coaxially arranged in the inside of outer tank and being double-wall structure, the closed assembly being sealingly connected between the inner tank shell and outer tank, and the electric pile module;Annular isolation layer space filled with liquid isolation medium is formed between the inner and outer shell of inner tank, the second electrolyte storage space is formed in the inside of inner tank, and the first electrolyte storage space is formed between the inner wall of inner tank shell and outer tank;System further includes pressure regulating tank communicated with isolation layer space, pressure maintaining device, detection unit and ground control unit.The application forms positive pressure barrier by adjusting the pressure of isolation medium to be higher than the pressure of electrolyte on both sides at each depth, realizes the active defense of leakage, and realizes the cross determination of leakage position by using the coupling characteristics of multiple physical quantities.

This application discloses a pair of pliers that is easy to assemble and disassemble, including a left and a right pair of pliers arranged in a cross configuration. The left pliers have a left plier shaft portion, and the right pliers have a right plier shaft portion. The left plier shaft portion includes a left connecting seat with a connecting groove. A connecting sleeve with internal threads is concentrically arranged in the connecting groove. The right plier shaft portion includes a right connecting seat with a gasket mounting groove and a connecting sleeve on opposite sides. A connecting hole is formed at the bottom of the gasket mounting groove. During assembly, the connecting sleeve is inserted into the annular mounting groove outside the connecting sleeve, and the bolt passes through the gasket and the connecting hole and is screwed into the internal thread of the connecting sleeve. Therefore, the pliers provided by this application can be assembled and disassembled using only a screwdriver. Its double-sleeve structure allows for both sliding rotation and adjustment of tightness at any time by tightening the bolt. The two pliers can be separated by removing the bolt, making it convenient to clean the dirt inside the pliers. The assembly and maintenance are simple, and the gasket forms an end face seal to prevent lubricating oil from seeping out, thus avoiding dirty hands and clothes.

The application relates to a pipeline connecting flange anti-leakage device, which comprises a first protection cover and a second protection cover which are butted into a protection barrel body, and a placing groove which accommodates a connecting flange; the two ends of the first protection cover and the second protection cover are inserted into a pipe body through grooves, and the inside of the placing groove of the first protection cover and the second protection cover is provided with a semi-annular sealing gasket; the extension plates on the two sides of the first protection cover and the second protection cover are locked through bolts to form integral sealing and fix the semi-annular sealing gasket; a film bag is arranged in the placing groove, the film bag is attached to the end face and the outer wall of the flange; an oil injection pipe passes through the corresponding first protection cover or the second protection cover to communicate with the film bag, one end of an oil leakage pipe is connected to the film bag and the other end is connected to an external observation box, a check valve is arranged in the oil leakage pipe; oil is injected before use to make the film bag tightly attached to the flange; when the connecting flange leaks, the pressure in the placing groove rises, the leakage of the placing groove extrudes the film bag, hydraulic oil in the hydraulic oil pushes away the check valve to enter the observation box, and a patrol personnel can judge the leakage through a window.

The invention discloses an anti-exosmosis chemotherapy dosing device for medical oncology, which belongs to the technical field of tumor chemotherapy and comprises a moving rod, a support rod is fixedly mounted at the top end of the moving rod, a dosing bottle is arranged on one side of the support rod, and an infusion mechanism forming a gas-liquid pressure self-balancing system is arranged at the bottom end of the dosing bottle. The infusion mechanism comprises an injection head inserted into a bottle opening of the medicine feeding bottle, a first connecting block is arranged on the injection head, and an infusion tube is installed at the free end of the injection head in a communicating mode. Meanwhile, redundant liquid can be rapidly shunted and reflowed through the backflow pipe, the backflow pressure peak value can be effectively absorbed through a buffering bag supported by a honeycomb support in the flow slowing cavity, vortex can be avoided through a built-in flow guiding component and a flexible silica gel miniature flow limiting valve, and the problem of damage caused by too high pipeline pressure is solved to the maximum extent.

The utility model discloses a tracheostomy tube sputum storage bag which comprises a tracheostomy tube. The device further comprises a pocket pad and a sputum storage box. The pocket pad is divided into an inner ring and an outer ring; the inner ring is made of a water absorbing material, and the outer ring is made of a medical proof fabric; the tracheostomy tube penetrates through the inner ring; one side of the sputum storage box is high and the other side is low; and the sputum storage box is detachably arranged at the bottom of the inner ring. The tracheostomy tube can effectively absorb sputum sprayed by a patient adopting the tracheostomy tube, prevents the sputum from infiltrating into clothes and skin, and ensures cleanness and sanitation.

The utility model relates to an electric locomotive battery charging and exhausting device which comprises a battery body. The valve comprises an outer cylinder, an inner cylinder and an exhaust part; the open end of the outer cylinder penetrates through and is fixedly connected with a cover plate of the battery body, the outer wall of the inner cylinder is sleeved with circular-truncated-cone-shaped first guide cylinders at intervals, and an inverted circular-truncated-cone-shaped second guide cylinder is arranged between every two first guide cylinders; the exhaust part comprises a rotating rod and a rotating plate, the rotating rod is arranged in the inner cylinder, the upper portion of the rotating rod penetrates through and is rotationally connected with the closed end of the outer cylinder, the rotating plate sleeves the upper end of the rotating rod, first air holes are annularly arrayed in the closed end of the outer cylinder on the upper side of the first guide cylinder, and second air holes are formed in the rotating plate between every two adjacent first air holes; a spring is connected between the driving ring and the closed end of the outer cylinder. According to the utility model, the problem that the acid liquor of the battery is easy to discharge and seep along with gas in the exhaust process of the lead-acid battery is solved.

The utility model provides an anti-leakage printer cartridge, which comprises a cartridge, an ink storage cavity, an ink inlet and an ink outlet, the ink storage cavity is arranged in the center of the interior of the cartridge, the ink inlet is arranged at the bottom end of the right part of the top inner wall of the ink storage cavity, the ink outlet is arranged at the left part of the bottom inner wall of the ink storage cavity, and a stirring screw rod penetrates through the center of the top inner wall of the ink storage cavity. A concentric scraping frame is slidably arranged at the upper end in the ink box, and a visible groove is formed in the right portion of the bottom end of the outer surface of the front side of the ink box. According to the printer ink cartridge capable of preventing leakage, the visual groove is formed, so that a worker can observe the ink cartridge conveniently; a stirring lead screw, stirring blades and a concentric scraping frame are arranged, ink in the ink box can be stirred, ink adhering to the inner wall of the ink storage cavity can be swept off, and waste is prevented; and the sealing ring, the upper cavity, the lower cavity and the elastic block are arranged, so that the ink outlet can be sealed, and ink is prevented from leaking outwards.

The invention discloses an aerosol generating product containing an ordered aerosol generating substrate with a coating layer and a preparation method of the aerosol generating product. The aerosol generating product comprises outer wrapping paper (1), and the aerosol generating substrate (2), a supporting piece (3), a composite cooling filtering piece (4) and an end cavity piece (5) which are positioned in the outer wrapping paper (1), the aerosol generating matrix (2) is reconstituted tobacco shreds arranged in order, and each reconstituted tobacco shred comprises a reconstituted tobacco shred body and a coating layer wrapping the outer surface of the reconstituted tobacco shred body. According to the method, the surface of the reconstituted tobacco is coated, and the coating layer on the surface of the reconstituted tobacco can improve the physical strength of the reconstituted shredded tobacco from multiple aspects, so that the problems that the filling amount of the reconstituted shredded tobacco is difficult to control, the reconstituted shredded tobacco is sticky after absorbing moisture, the stiffness becomes low, and an ordered tobacco core rod becomes soft are solved.

The invention discloses a hydroponic cabbage mustard planting device and method, and particularly relates to the field of agricultural hydroponics, the hydroponic cabbage mustard planting device comprises an outer fixing frame, step-shaped circulating rotary cultivation parts are arranged on the outer fixing frame, and a water storage tank is arranged at the bottom of the outer fixing frame; the circulating rotary cultivation piece comprises multiple sets of cultivation bins, and the multiple sets of cultivation bins on the two sides of the circulating rotary cultivation piece are arranged in a stepped mode at equal intervals. The structure of the circulating rotary cultivation part is improved, the circulating water pump works to pump a nutrient solution in the water storage tank to the topmost cultivation bin through the water conduit, the protective bottom part is matched with the arc-shaped bottom surface to form a smooth inner wall of the planting cup, and cabbage mustard roots grow and cannot adhere to or be interwoven with the inner wall of the planting cup in the water planting process; the floating plate together with the seedlings is kept in a floating state, the situation that a water culture container is grabbed by a root system of a traditional water culture device is avoided, the situation that the rhizosphere part is rotten or the plant growth state is weakened possibly is effectively avoided, and a simple mode is provided for subsequent picking.

The utility model provides a novel throttle valve belongs to valve body technical field, including valve subassembly and anti loosening structure, valve subassembly is by valve body, installation cover, valve rod and valve core is composed, the utility model: valve rod is by upper stem body and lower stem body two parts constitute, is connected with screw rod in the upper stem body bottom, lower stem body top installs the sliding sleeve, and screw rod is connected in the thread groove of sliding sleeve inside opening in the thread, and the inside of installation cover is installed with the guide sleeve, and the inner wall of guide sleeve opens the limit slot, and sliding sleeve slides in the limit slot through both sides' limit sliding block, when the upper stem body rotates, drives screw rod to rotate in the sliding sleeve, and sliding sleeve is lifted and removed along screw rod under the limit of limit slot, thereby makes the drive valve core lift and open and close, because the upper stem body and lower stem body are connected through screw rod sliding sleeve, make valve rod not to produce loosening when being vibrated, avoid the leakage caused by the valve core upward movement.

The utility model relates to the technical field of medical instruments, in particular to a simple excrement liquid collecting device which comprises an anal tube and a collecting bag communicated through a drainage tube, a catheter portion is formed at the tail end of the anal tube, a bag body is arranged on the outer side of the catheter portion, a connecting tube is arranged on one side of the bag body, a plurality of edge grooves are formed in the outer side of the anal tube, and the drainage tube is arranged in the edge grooves. A plurality of liquid inlet holes are formed in the position, located in the edge groove, of the anal tube, a through hole is formed in the tube head of the anal tube, a plurality of annular grooves are formed in the outer side of the anal tube in the length direction, and the annular grooves are in a smooth transition V shape. According to the simple excrement liquid collecting device, the anal tube is inserted into the anus of a patient, the insertion depth can be judged through the ring block until the bag body extends into the anus and is located in a staying area, gas or liquid is injected into the bag body through the connecting pipe, the anus can be blocked after the bag body is expanded, and therefore excrement liquid can be effectively prevented from leaking out; and meanwhile, the use of medical staff is facilitated.

The invention discloses a deep-buried hydraulic tunnel external water pressure reduction control device easy to disassemble and replace. The deep-buried hydraulic tunnel external water pressure reduction control device comprises an outer cylinder, a piston, a spring and a bottom plate. The outer cylinder is embedded in a reinforced concrete lining, the piston and the spring are sequentially installed in the outer cylinder from the tail end of the outer cylinder, the two ends of the spring are connected with the piston and the bottom plate respectively, the bottom plate is fixedly connected to the end face of the tail end of the outer cylinder and pre-tightens the spring, and the pre-tightening force of the spring acts on the piston and enables the upper end of the piston to seal the open end of the head end of the outer cylinder. The piston bears the effects of internal water pressure and external water pressure at the same time, when the internal and external water pressure difference is larger than the starting pressure difference set by the piston, the device is started, the spring is compressed, external water is discharged, along with external water discharging, the pressure difference is reduced, the spring extends, the piston moves upwards and then resets, and the device returns to the initial state. Different device starting pressure differences are set by adjusting the initial compression amount of the spring, and accurate control is carried out. During replacement and maintenance, only the bottom plate needs to be detached, replacement is convenient, and the lining structure is not damaged.

The utility model provides a sample collecting device which comprises a collecting bottle, a sampler, a separating piece and a sample injector, two opposite ends of the sample collecting device are respectively provided with a sample inlet end and a sample outlet end, the separating piece is connected on the sample inlet in the collecting bottle, the sampler comprises a sampling rod, a sampling head and a holding part, and the sampling head and the holding part are positioned at the end part of the sampling rod. The sample injector comprises a liquid suction head, a plug and a holding part, the liquid suction head comprises a capillary tube structure, a sample outlet end of the sample collecting device is provided with a sample injector support, the sample injector support further comprises a sample outlet and a storage cavity, one end of the storage cavity is open, the other end, facing the interior of the collecting bottle, of the storage cavity is closed, and the plug of the sample injector seals the sample outlet. According to the sample collecting device, quantitative sampling and quantitative dropwise adding of the sample mixed liquid can be achieved, and an operator is prevented from being polluted in the operation process.

The invention discloses a wading underground cavern pressure difference control device based on a double-layer outer barrel. The wading underground cavern pressure difference control device comprises a valve body outer barrel, a piston, a spring and a bottom plate. The valve body outer cylinder is of a double-layer structure, an annular gap is formed in the upper end of the valve body outer cylinder, a water outlet hole is machined in the lower end of the valve body outer cylinder, the valve body outer cylinder is embedded in a reinforced concrete lining, the piston and the spring are sequentially installed in the valve body outer cylinder, and the two ends of the spring are connected with the piston and the bottom plate respectively. When the pressure difference between the inside water and the outside water is larger than the starting pressure difference set by the piston, the device is started, the spring is compressed, the outside water is discharged into the reinforced concrete lining from the water outlet through the annular gap of the outer cylinder of the valve body, the pressure difference is reduced along with discharging of the outside water, the spring extends, the piston moves upwards and then resets, and the device returns to the initial state. Different device starting pressure differences are set by adjusting the initial compression amount of the spring, internal water leakage can be effectively prevented, and meanwhile the internal and external water pressure difference can be accurately controlled.

The utility model relates to medical waste liquid collecting device field, concretely is a kind of waste liquid collection and anti-seepage transfer device, including box and barrel, it is characterized in that, the barrel includes inner barrel and outer barrel, inner barrel is sleeved with outer barrel, and inner barrel top is equipped with barrel cover, and outer barrel top is open structure;The lower part of the inner barrel is equipped with first liquid discharge pipe, and the lower part of the outer barrel is equipped with second liquid discharge pipe;First clamping plate, second clamping plate and screw rod are equipped in the box, and the first clamping plate, second clamping plate are respectively equipped with screw block and the thread connection of positive and negative thread section on screw rod;The one end of screw rod is equipped with handle;The barrel is located between first clamping plate and second clamping plate.The utility model outer barrel can collect the waste liquid of inner barrel exosmosis;First clamping plate, second clamping plate can clamp barrel, prevent waste liquid transfer process barrel sliding or tilting, improve the stability of barrel transfer, reduce waste liquid exosmosis risk.

The invention relates to the technical field of water seal wells, in particular to a safety type aviation kerosene oil depot water seal well which comprises a water seal well body, a well lid is arranged at the top of the water seal well body, one side of the well lid is movably connected with one side of the water seal well body, a groove is formed in the bottom in the water seal well body, and a container is arranged in the water seal well body. According to the safety type aviation kerosene oil depot water seal well, the water level floating monitoring device and the oil level floating device are arranged in the well, a water level display area is marked on the oil level floating device, and when the liquid level drops and rises due to water evaporation or external water inflow, the water level display area can be displayed on the water level display area. The water level display area moves downwards and upwards relative to the position of the well lid hole, displacement changes of the display area and changes of the identification colored tape are found through regular inspection of operators on duty, and therefore the conditions of low water level and high water level are known, and the visual effect of water level monitoring is achieved.

The utility model discloses a kind of arteriovenous fistula indwelling needle, belong to indwelling needle technical field, this kind of arteriovenous fistula indwelling needle, including indwelling needle body, indwelling needle body includes indwelling catheter component, needle core component is inserted in the inside of indwelling catheter component, needle core component includes needle core, tail portion of needle core is fixedly connected with rear needle seat, the end of rear needle seat is limit connection with indwelling catheter component, the outside of needle core is provided with needle cap, needle cap is respectively with indwelling catheter component and needle core corresponding sleeve joint, the side of indwelling catheter component is continuously provided with infusion connector pipe, infusion connector pipe is externally sleeved with infusion clamp, needle cap is set outside needle core, after puncture needle cap can be clamped in the limiting ring of front needle seat, cooperate the telescopic structure of extension sleeve pipe, make needle core retract into pipe, avoid needle tip exposure, significantly reduce the risk of being pricked of medical staff and patient.

The utility model relates to the technical field of paper diapers, and discloses a breathable paper diaper which comprises a paper diaper body, an absorption core layer is arranged in the middle of the paper diaper body, a first breathable layer is arranged at the front end of the absorption core layer, a second breathable layer is arranged at the rear end of the absorption core layer, leg inner side binding stickers are arranged on the two sides of the absorption core layer, and leakage-proof layers are arranged on the leg inner side binding stickers. A first sponge anti-abrasion strip is arranged at the front end of the first breathable layer, and a second sponge anti-abrasion strip is arranged at the rear end of the second breathable layer. The first breathable layer and the second breathable layer are arranged on the waist portions of the two ends of the paper diaper body, moisture can be dissipated, the skin of a baby can be kept dry and clean, the breathable layers are made of elastic materials and can be tightly attached to the body of the baby, air circulation resistance is reduced, and the breathable effect is improved.