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91results about How to "Block the flow" patented technology

Nano ceramic high-temperature-resistant thermal-insulation coating, and its preparing method and use

The invention discloses new nanometer ceramic high temperature resistant heat preservation paint and the preparing method and use. Its components part by weight are as follows: film forming matter 10-35, filling 50-75, ceramic micro-balloon 8-50, and modified nanometer material 3-12. The produced nanometer ceramic high temperature resistant heat preservation paint can prevent solid heat transfer and radiant heat transfer, thus it can greatly improve heat preservation effect. And its high temperature resistant can reach 1000 degree centigrade.
Owner:王继征

OLED display panel and a method for manufacturing same, and OLED display device

The present invention provides an OLED display panel and a method for manufacturing the same, and an OLED display device. A concave-convex structure is arranged at one side, far away from a substrate,on a planarization layer, after an organic light-emitting functional layer and an inorganic first package layer are formed on the planarization layer, positions of the organic light-emitting functional layer and the first package layer corresponding to the concave-convex structure are non-flat surfaces, namely concave-convex structures with the same shapes are formed at the positions, corresponding to the concave-convex structure, on the organic light-emitting functional layer and the first package layer; when an organic second package layer is formed, the non-flat surface of the first package layer can block the flow of the second package layer to a certain extent to reduce the liquidity of the second package layer, reduce the climbing distance of the edge of the second package layer andincrease the edge stress and an angle of gradient so as to achieve the product narrow-frame design, improve the thickness uniformity of the edges of the second package layer, avoid bad mura of a non-display area and ensure the package effect.
Owner:BOE TECH GRP CO LTD +1

OLED display panel and display device

The invention provides an OLED display panel and a display device. A retaining wall of the OLED display panel comprises a substrate retaining wall layer, an inorganic retaining wall layer and an organic retaining wall layer which are stacked, an inorganic retaining wall film and the cross section of the substrate retaining wall layer form an undercut shape, and the substrate retaining wall layer comprises a second flexible substrate. The inorganic retaining wall layer comprises an inorganic layer in the driving circuit layer, and the organic retaining wall layer comprises at least one of a planarization layer, a pixel definition layer and a supporting column. Based on the retaining wall structure, the retaining wall height is increased, the organic materials can be better prevented from flowing, and the distance between the retaining wall and the display area is reduced. Meanwhile, the undercut shape between the retaining wall and the display area can also increase the flow path of theorganic materials, so that the distance between the retaining wall and the display area can be further reduced. Moreover, the cutting cracks can be prevented from extending to the display area alongthe inorganic layer and the substrate, so that the size of a frame can be further reduced to a greater extent.
Owner:WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD

Packaging substrate and manufacturing method thereof, and OLED display device and manufacturing method thereof

The invention discloses a packaging substrate and a manufacturing method thereof, an OLED display device and a manufacturing method thereof, relates to the technical field of display, and can prevent an outer side edge of glass cement coated on the packaging substrate from generating burrs. The packaging substrate includes a substrate, the substrate includes a bonding area used for coating glass cement, the packaging substrate also includes a first retaining wall located on the substrate, and the first retaining wall is arranged along an outer side edge of the bonding area and is used for stopping the glass cement coated on the bonding area from flowing outwards. The packaging substrate provided by the invention is used for preventing outside moisture and oxygen from entering an OLED display device.
Owner:BOE TECH GRP CO LTD +1

Emergency hemostasis device for hematology department

The invention discloses an emergency hemostasis device for the hematology department. The emergency hemostasis device comprises a base, a motor driving device, a cotton swab disinfecting and cleaningdevice, an emergency hemostasis hand device, a blood pressure display device, a disinfecting and cleaning solution storage device, an adhesive tape fixing device, an automatic ice compress nozzle mechanism and an imaging device, wherein the base is a mounting platform for all the devices, and the emergency hemostasis hand device is used for fixing hands, feet and other parts and blocking blood flow, so that blood vessels are exposed; when being adjusted to a proper position, the cotton swab disinfecting and cleaning device disinfects a wound, the automatic ice compress nozzle mechanism is aligned to the wound to work to achieve the effect of emergency hemostasis, the emergency hemostasis hand device grasps hands and feet to be adjusted to proper positions and then automatically binds the wound with an adhesive tape, the adhesive tape fixing device is operated, and a needle head can be stuck to the hand through the adhesive tape so as to fix the wound; and the imaging device can identify accurate positions of arms and feet of a human body.
Owner:姜元成

Novel heat-radiation and thermal-insulation integrated water cup

The invention discloses a novel heat-radiation and thermal-insulation integrated water cup and relates to a water cup; in order to overcome the difficulty that a heat-radiation cup having two layers and two rows of holes is incontrollable in heat-radiation degree, the invention designs a novel heat-radiation and thermal-insulation integrated water cup; the technical scheme is as follows: according to the novel heat-radiation and thermal-insulation integrated water cup, a cup body is divided into an inner layer and an outer layer, wherein foam is accommodated between the two layers of the cup body; the foam is divided in two parts, wherein one part of the foam is attached to the outer side of the inner layer of the cup body and the other part of the foam is stuck on the inner side of the outer layer of the cup body; on the part not stuck with the foam, the outer layer of the cup body is formed with heat-radiation holes; as the outer layer of the cup body is rotated, the two parts of foam can be partially or completely overlapped, so that some or all heat-radiation holes in the outer layer of the cup body are aligned with metals of the inner layer of the cup body; therefore, better heat radiation is guaranteed through air circulation between the two layers of metals; and when the outer layer of the cup body is rotated, the edges of the two parts of foam are mutually contacted in a vertical direction, so that a seal ring is formed. The integrated water cup disclosed by the invention has the beneficial effects that the integrated water cup can guarantee heat radiation and thermal insulation.
Owner:SICHUAN UNIV

Moisture liquid phase sampler with eccentric hole plate

The invention relates to a moisture liquid phase sampler with an eccentric hole plate. The moisture liquid phase sampler comprises a sampling pipeline main path 1, a sampling U-shaped loop 5 and a liquid phase sampling bottle 7, wherein the sampling pipeline main path 1 is connected onto a moisture circulation pipeline; the eccentric hole plate 2 is fixed on the sampling pipeline main path 1; the center of the hole is positioned above the center axial line of the main pipeline; an inlet and an outlet of the sampling U-shaped loop 5 are respectively positioned in the two sides of the eccentric hole plate of the sampling pipeline main path 1; the liquid phase sampling bottle 7 is positioned under the U-shaped loop 5, and is connected with the sampling U-shaped loop 5 through a switch valve; a three-way valve structure is arranged in positions of an inlet position and an outlet position of the sampling U-shaped loop 5 and in a position among the inlet and outlet of the sampling U-shaped loop 5 and the liquid phase sampling bottle 7. The moisture liquid phase sampler has the characteristics that the structure is simple; the efficiency is high; meanwhile, the dynamic sampling in the moisture flowing process is realized; the sampled liquid phase samples have good representativeness.
Owner:TIANJIN UNIV

Dispensing device for electronic transformer production and based on limiting extrusion mechanism

The invention relates to the technical field of electronic transformer production, in particular to a dispensing device for electronic transformer production and based on a limiting extrusion mechanism. The dispensing device at least comprises a supporting plate, an adjusting mechanism and a dispensing mechanism. The dispensing mechanism comprises a storage box, the top of the storage box is fixedly connected with the end of a rack, the bottom of the storage box communicates with a communicating cylinder, a limiting cylinder is arranged in the communicating cylinder in a sliding manner, and the limiting cylinder is matched with the inner size of the communicating cylinder. A through hole is formed in the outer wall, close to the end, of the limiting cylinder, the end of the limiting cylinder communicates with a glue outlet head, a limiting plate is arranged on the outer wall, close to the end, of the limiting cylinder, and a limiting spring is fixedly connected between the limiting plate and the end of the communicating cylinder. According to the dispensing device, dispensing can be carried out in an extrusion limiting manner, the glue outlet head stops dispensing during lifting, the dispensing amount can be conveniently controlled, and different positions can be conveniently adjusted for dispensing.
Owner:天长市超威电子有限公司

High-flame-retardant steel fireproof door made of environment-friendly filling material

The invention discloses a high-flame-retardant steel fireproof door made of an environment-friendly filling material, and relates to the technical field of fireproof doors. The high-flame-retardant steel fireproof door comprises a fireproof door housing, wherein a storage box containing cavity is formed in the fireproof door housing; three lower sliding grooves are formed in the bottom end face ofthe inner wall of the storage box containing cavity; three upper sliding grooves are formed in the top end face of the inner wall of the storage box containing cavity; a T-shaped limiting groove is formed in the upper part of the storage box containing cavity; two limiting holes are formed in the inner wall of the T-shaped limiting groove; a distilled water storage box, a dry powder storage box and a yellow sand storage box are sequentially connected into the storage box containing cavity in a sliding mode from back to front; a T-shaped sliding block is connected into the T-shaped limiting groove in a sliding mode; and the distilled water storage box, the dry powder storage box and the yellow sand storage box are limited through the T-shaped sliding block. According to the high-flame-retardant steel fireproof door, the yellow sand storage box, the dry powder storage box and the distilled water storage box are combined for use, a fire can be extinguished step by step, and the fire is prevented from further spreading.
Owner:JIANGSU YANGSHENG FIRE DOOR IND CO LTD

Combined type separation device for high-grade concrete and low-grade concrete

The invention discloses a combined type separation device for high-grade concrete and low-grade concrete. The separation device comprises a base, a drawing strip and a corner drawing piece which are mutually independent and can be combined for use; when in use, the base is placed on board steel bars to be bound by banding wires; drawing strips with different specifications are selected to be inserted in the base according to intervals between the steel bars and spliced tightly to prevent the concrete from flowing; other bases are sequentially mounted in place, and are connected and fixed through the corner drawing piece, and then concreted is poured; According to the combined type separation device for high-grade concrete and low-grade concrete, concrete is limited in a specific area due to interception of the device and is prevented from flowing here and there, so that the situation that high-grade concrete and low-grade concrete are disordered is effectively solved, the requirement of strong column and weak beam is met.
Owner:中建五局(阜阳)建筑工程有限公司

Urban road air pollutant big data acquisition equipment

The invention discloses urban road air pollutant big data acquisition equipment, which belongs to the technical field of urban road air pollutant big data acquisition equipment. The urban road air pollutant big data acquisition equipment comprises a storage shell, and the top of the storage shell is fixedly connected with an air detection assembly and a temperature and humidity detection assembly. When the urban air velocity is detected every time, the air velocity detection assembly is pushed out, the air velocity detection assembly is overturned to the vertical position through the overturning mechanism, and the air velocity is detected from the side face of the storage shell, so that the air velocity detection assembly is prevented from directly facing the storage shell, and the storage shell is prevented from blocking air flow when the air velocity is detected; the positioning mechanism is used for positioning the air velocity detection assembly at the vertical position, vibration of the air velocity detection assembly during detection is avoided, the detection precision is improved, when the air flowing direction is changed, the direction of the air velocity detection assembly is adjusted by rotating the adjusting handle, the air velocity detection assembly is made to face the wind direction all the time, and the detection precision is greatly improved.
Owner:陕西安讯环境检测有限公司

Liquid metal print cartridge

The invention relates to the field of printing machinery, and more particularly to a liquid metal printing cartridge. The liquid metal printing cartridge includes an accommodating chamber and a pressure regulating device for adjusting the top pressure of the accommodating chamber. The pressure regulating device comprises a negative pressure passage having one end communicating with the top of the accommodating chamber and the other end for communicating with a negative pressure generating device and / or a pressurizing device capable of selectively pressurizing the top of the accommodating chamber. The cartridge prevents the ink under greater gravity from leaking from the tip and allows the ink to flow smoothly downward and at a moderate speed.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

Indoor combined high-voltage cabinet with built-in fireproof isolation structure

The invention discloses an indoor combined high-voltage cabinet with a built-in fireproof isolation structure, and the cabinet comprises a cabinet bottom shockproof frame which is disposed at the bottom of a high-voltage cabinet body, fireproof plates are symmetrically connected to the inner walls of the left and right sides of the high-voltage cabinet body, a partition plate frame which is disposed at the rear side of the fireproof plates, and an equipment plate frame and an isolation plate frame are connected to the partition plate frame. And the front side of the equipment plate frame is provided with electrical elements and heat dissipation shutters which are symmetrically arranged on the high-voltage cabinet body and the fireproof plate. When the indoor combined high-voltage cabinet with the built-in fireproof isolation structure is used in a daily safe environment, the shutters can be kept open to keep air flow in the cabinet body so as to enhance the heat dissipation capability, the shutters can be isolated and closed in time when a fire disaster occurs inside and outside the cabinet body, and the fire extinguisher for flame-retardant air can be automatically started, so that the indoor combined high-voltage cabinet is convenient to use. Therefore, oxygen required by a fire ignition point is reduced, open fire is prevented from being generated, damage to the cabinet body is avoided, manual operation steps can be reduced, and the safety performance of the cabinet body is improved.
Owner:谢金梅

Automatic transfusion injector for obstetrics and gynecology

The invention discloses an automatic transfusion injector for obstetrics and gynecology. The automatic transfusion injector comprises a base, a wrist fixing device, an injection device, an adhesive tape pasting device and an imaging device, wherein the base is a placing platform of a hand of the device and a mounting platform of each device; a wrist is fixed by the wrist fixing device to block blood flow, so that blood vessels are exposed; the injection device can grasp a needle, adjust the needle to an appropriate position, and then automatically inject the needle into a vein; the adhesive tape pasting device can be operated to paste the needle on the hand by an adhesive tape, thereby fixing the needle; and the imaging device can identify positions of blood vessels in human arms.
Owner:曹延香

Color filter, preparation method and display device

The invention provides a color filter. The color filter comprises a substrate, a first transparent conductive layer, a second transparent conductive layer, an alignment layer and sealing frame glue, wherein the first transparent conductive layer is arranged at the edge of the periphery of the substrate and has a 'double-stacked-square'-shaped structure; the second transparent conductive layer covers the first transparent conductive layer and extends to a position above the substrate; the second transparent conductive layer comprises a flat portion arranged on the substrate and a step portion which is arranged above the first transparent conductive layer and is connected with the flat portion; the alignment layer is arranged on the flat portion; and the sealing frame glue is arranged on thestep portion. The 'double-stacked-square'-shaped first transparent conductive layer is additionally arranged at the edge of the periphery of the substrate, then the edge of the second transparent conductive layer is heightened, the alignment layer is effectively stopped from flowing to the edge of the periphery, the sealing frame glue is prevented from pressing the alignment layer, steam is stopped from entering the color filter, and finally, the stability of the color filter is improved.
Owner:TCL CHINA STAR OPTOELECTRONICS TECH CO LTD

Tire tread pattern provided with stone guard structure

The present invention discloses a tire tread pattern provided with a stone guard structure. The tread pattern is composed of annular grooves consecutive in the circumferential direction and pattern blocks. The annular grooves are defined by inconsecutive first side ridges; the incurvate parts, relative to the first side ridges, in the annular grooves are provided with first polygonal surfaces parallel to the tread; a second side ridge and a third side ridge of each first polygonal surface respectively extend in the trench direction, to form two second polygonal surfaces, and the two second polygonal surfaces and the first polygonal surface share a vertex S; and the bottom lines of the annular grooves are in the shapes of "zigzag" in the circumferential direction. The stone discharging function is mainly reflected in two aspects: on the one hand, the first polygon surfaces parallel to the tread directly play the role of stone discharging, on the other hand, inclined surfaces on the both sides of the annular grooves play the role of stone discharging, as the angles of the inclined surfaces change, it is difficult for stones to be firmly fixed into the inclined surfaces, stones are easily discharged during the running process of tires, so that the tires are guaranteed to have a good stone guard performance.
Owner:AEOLUS TIRE

Water drainage pipeline mounting process

The invention relates to the field of pipeline mounting, in particular to a water drainage pipeline mounting process. The water drainage pipeline mounting process comprises the following steps: step 1) of excavating a pipeline mounting groove; step 2) of mounting a tube seat in the groove; step 3) of sequentially hoisting a plurality of pipeline units; step 4) of connecting adjacent pipeline unitsto form a water drainage pipeline; step 5) of coating thermal-insulation paint on the surface of the water drainage pipeline to form a thermal insulation layer; step 6) of backfilling soil and compacting the soil to form a pipeline soil layer, and controlling vertical height difference between the top of the pipeline soil layer and the top of the water drainage part to be 2cm-5cm; step 7) of spreading porous stones on the pipeline soil layer to form a stone heat insulation layer; and step 8) of backfilling soil into the stone heat insulation layer, and compacting the stone heat insulation layer to repair ground. The water drainage pipeline mounting process has the effects of enabling a water body in a water drainage tube to be not liable to ice and expand, and enabling the water drainagepipeline to be not liable to damage.
Owner:广东荣潮拓展建设有限公司

Plunger type oil spraying pump achieving variable oil supply under multiple working conditions

InactiveCN105697206AEffective travel is convenient and precisely controlledImproved Linear RegulationMachines/enginesFuel injecting pumpsLow speedDrive shaft
The invention provides a plunger type oil spraying pump achieving variable oil supply under multiple working conditions. The plunger type oil spraying pump mainly comprises a plunger and barrel assembly, an oil adjusting device composed of a rack, a gear and a rotating shaft, a driving selecting device composed of a driving frame, a top plate and a top plate stirring rod, an auxiliary driving device composed of a guide plate, a wheel frame and a wheel, and a double-speed-cam driving device composed of a driving shaft, a low-speed cam and a high-speed cam. The plunger type oil spraying pump achieving variable oil supply under the multiple working conditions is characterized in that variable oil supply under the multiple working conditions is achieved through three kinds of chutes, the high-speed cam and the low-speed cam. Multi-working condition adjustment on the effective stroke of a plunger is achieved through the three kinds of chutes in the side face of the plunger, in other words, fine adjustment and buffered oil spraying are achieved through the double-curve type chute, convenient linear adjustment and accurate control are achieved through the linear chute, and rapid emergency adjustment is achieved through the fast-opened chute. Positioning of the three kinds of chutes is achieved through a magnetic block at the position of a notch of the gear and a magnetic strip on a plunger sleeve. The oil pumping frequency is adjusted through the high-speed cam and the low-speed cam on the driving shaft, and variable oil supplying under the multiple working conditions is achieved.
Owner:UNIV OF JINAN

Raw material adding device for flour baking

The invention belongs to the technical field of flour processing, and particularly relates to a raw material adding device for flour baking. The device comprises a material adding box, a controller is fixedly installed on the side face of the material adding box, an opening and closing mechanism is fixedly installed in the material adding box, and the opening and closing mechanism is electrically connected with the controller through connecting lines. A supporting mechanism is arranged at the bottom of an inner cavity of the material adding box, a material control box is fixedly connected to the top of the supporting mechanism, pressing rods are fixedly installed on the side face of the material control box, and pressure sensors are arranged below the pressing rods. According to the raw material adding device for flour baking, by arranging the material control box, the pressing rods and the pressure sensors, flour raw materials can be automatically weighed according to the feeding requirement in the flour raw material adding process, the problem that operation is complex during manual or machine single-time weighing is avoided, the flour raw material feeding speed is increased, it is guaranteed that the flour feeding process can run stably, and therefore the work efficiency of flour baking is improved.
Owner:烟台慧博特产业研究院有限公司

Roller-shutter-type fireproof door

The invention discloses a roller-shutter-type fireproof door which comprises a fireproof reel sleeve, a roller shutter fireproof door body and a first decoration frame. A square reel is arranged outside driving key teeth, a connecting piece is welded to the front side of the square reel, and threaded mounting shafts matched with threaded fixing cylinders are arranged on the outer side of a mounting piece. Skeleton connecting strips are arranged on the two sides of the roller shutter fireproof door body correspondingly, mounting clamping blocks are arranged on the lower portions of the skeletonconnecting strips, water passing holes are formed in the middles of sliding shafts, roller shutter fireproof rods are arranged on the inner sides of mounting holes, and hydraulic pressure slopes arearranged in the middles of the roller shutter fireproof rods. A plurality of fire hydrant connecting openings are formed in the front side of the first decoration frame. The square reel is arranged outside the driving key teeth, and thus the roller shutter fireproof door body is advantageously curled and stored; the threaded mounting shafts matched with the threaded fixing cylinders are arranged on the outer side of the mounting piece, and thus the fireproof reel sleeve is advantageously fixed to a wall; the hydraulic pressure slops are arranged in the middles of the roller shutter fireproof rods, thus hydraulic pressure of different heights advantageously keeps balance; and a fireproof groove is formed in a second decoration frame, so that fire extinguishing is faster.
Owner:山东佳和包装有限公司

Automatic traction trash holding and guiding system

The invention discloses an automatic traction trash holding and guiding system. The system comprises an algae collecting device, a floating device, an unmanned ship and a remote control device. The unmanned ship comprises a ship body. A cover plate is arranged above the ship body; a bottom plate is arranged in a lower portion; a propeller mounting plate is fixedly mounted behind the ship body; thepropeller mounting plate is fixedly connected with a propeller; and the ship body is connected with a floating device, the floating device comprises a hose and a stainless steel bearing chain, the stainless steel bearing chain is fixedly connected to the lower portion of the hose, one end of the hose is connected with a bottom plate, and the other end of the hose is connected with the algae collecting device. The system is scientific, reasonable, safe and convenient to use, and beneficial to enlarging a working surface for collecting algae and improving algae feeding efficiency.
Owner:南京清中环境技术有限公司

Membrane-free partially degradable left atrial appendage occluder

The invention relates to a membrane-free partially degradable left atrial appendage occluder, and belongs to the technical field of medical instruments. The occluder comprises an upper disc surface, a bracket body and a lower disc surface, a bracket body is arranged between the upper disc surface and the lower disc surface; the plugging device is cylindrical or drum-shaped; and the upper disc surface is of a closed structure. Due to the closed plug type design, the oppression of the plugging device on the peripheral structure tissue of the left auricle is reduced; complications caused by auricle puncture are reduced; and the requirement for the depth of the implanted left auricle is low, and the application range is wide. The occluder is woven with a dense net, the effect of blocking blood flow is achieved, a traditional flow blocking film is replaced, the occluder can pass through a smaller conveying sheath, and iatrogenic atrial septal defects are avoided. The degradable high polymer material is adopted, so that the metal implantation amount of the left auricle plugging device and the load on the heart of a patient are reduced. Through the design of the forming ring in the plugging device, the radial supporting force of the plugging device is enhanced, and the stability of the plugging device in the body is improved.
Owner:SHANGHAI SHAPE MEMORY ALLOY

Oil gas recovery device

The invention relates to an oil gas recovery device. The oil gas recovery device comprises a water removal heat exchanger, a water separator and a condensate oil heat exchanger. The water removal heatexchanger comprises a first cooling medium conveying pipeline and an oil gas conveying pipeline which are located in the shell, the first cooling medium conveying pipeline and the oil gas conveying pipeline are provided with two sections of crossed parts, and the first cooling medium conveying pipeline and the oil gas conveying pipeline are provided with at least one part extending in parallel. Aheat conduction metal layer is arranged between the parallel extending parts, the bottom and the top of a shell part of the water separator are provided with at least two baffles which are verticallyarranged side by side and spaced by a certain distance, and the tops of the baffles are provided with arc-shaped structures bent in the oil-gas inlet direction. A second cooling medium is arranged inthe condensed oil heat exchanger. The oil gas recovery device is simple, and ice blockage can be prevented while oil gas recovery is guaranteed.
Owner:深圳市奥图威尔科技有限公司

Oil baffle device for side face sleeve transformer

The invention discloses an oil baffle device for a side face sleeve transformer. The device is mainly used for the protection of transformer oil splashing and flowing after an explosion of the side face sleeve transformer, the device is arranged at a position of about 1.5-2 meters away from the outside of the side face sleeve transformer, the device comprises four components of a vertical movablefireproof oil baffle plate, a tilted movable fireproof oil baffle plate, a movable patrol door and a transformer explosion fire protection wall; the vertical movable fireproof oil baffle plate is supported by a prebuilt transformer fireproof wall or a newly-built transformer explosion fire protection wall; the tilted movable fireproof oil baffle plate is arranged at the two sides of a side face sleeve within a range larger than two meters; the movable patrol door is arranged on a patrol path or a fire fighting path which are located at the two sides of the transformer; and the transformer explosion fire protection wall is arranged at the two sides of an independent transformer or the two sides of two adjacent transformers.
Owner:ENERGY CHINA YNPD

Nasal mucosal protective device for endoscopic sinus surgery passage

The invention discloses a nasal mucosal protective device for an endoscopic sinus surgery passage; the protective device is surrounded by a nylon textile layer; a passage is formed at the interior after the nylon textile layer surrounding; one end of the passage is a stretching-out end, and the other end of the passage is a stretching-in end. The device also includes an air bag used for supportinga nasal cavity opening and arranged between the stretching-out end and the stretching-in end. The device can effectively protect mucosa of the inner wall of a nasal cavity by putting the device in the nasal cavity in advance, and unnecessary damage to the mucosa of the nasal cavity and a normal anatomical structure caused by the repeated access of an instrument in the operation process is avoided; moreover, the device can well adapt to the environment in the nasal cavity, even if the instrument impacts on the nasal passage, the device can also well decompose the impact force, and plays a highprotection effect on the inner wall of the nasal cavity. At the same time, even if a small amount of bleeding blood exists in the nasal cavity mucosa, through a self-woven dense mesh structure of theprotective device, the protective device can prevent the bleeding blood from flowing to an operation region of the bottom of the nasal cavity, maintains clearness of an operation field and an endoscopy lens, greatly saves the operation time, increases the safety of operation and reduces the risk of operation.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY
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