555 results about "Natural state" patented technology

The invention relates to a delivery device for delivering a self-expanding tubular implant and a system comprising the same. The conveying device comprises a pushing rod; at least one expandable body disposed at a distal end of the push rod, the expandable body configured to: axially elongate in a radially constrained contracted state; under the expansion state of releasing the constraint, radial expansion and axial contraction are realized; the elastic core wire is arranged in the expandable body in a penetrating mode and connected with the two ends of the expandable body, and the core wire is kept in a straight line shape in the natural state and the contraction state of the expandable body. The conveying device provided by the invention can be matched with a small-size micro catheter and can provide enhanced axial pushing force in the conveying process, so that the pushing efficiency and the operation stability of the tubular implant are improved; meanwhile, the radial expansion force provided by the expandable body can form effective auxiliary support for the implant, rapid wall attachment and stable expansion of the implant are promoted, and therefore the release effect of the implant is improved.

The invention relates to a self-expanding stent delivery device and a system comprising the same. The self-expanding stent conveying device comprises a pushing rod; the radial force storage structure extends in the axial direction and is arranged at the far end of the pushing rod, and an inner cavity extending in the axial direction is defined in the radial force storage structure; the positioning line extends in the axial direction and penetrates through an inner cavity of the radial force storage structure; the positioning line is in a natural state; the fixing components are at least arranged at the near end and the far end of the positioning line effective area, and the near end and the far end of the positioning line effective area are fixed to the cavity walls of the inner cavities at the near end and the far end of the radial force storage structure respectively. Through cooperative cooperation of the radial force storage structure, the positioning line and the fixing part, while the auxiliary expansion effect on the self-expanding stent is ensured, displacement of the fixing part possibly caused by release of the radial force storage structure is effectively restrained, and therefore reliable conditions are provided for accurate release of the self-expanding stent.

The invention discloses a flexible grinding device for granular medicine, and particularly relates to the technical field of the international classification number B02C7 / 02. The device comprises a grinding container, a flexible diaphragm is arranged at the bottom of the grinding container, and a sealed A cavity is formed between the flexible diaphragm and the bottom end of the grinding container; the upper space of the flexible diaphragm is a grinding chamber B; the flexible diaphragm is in a downward concave surface shape in a natural state; grinding and pestling; a spinning cover is fixed at the upper part of the grinding pestle; the spinning cover covers the upper opening of the grinding container and is in running fit with the upper opening; the middle of the grinding pestle is a transmission rod; the grinding end face of the lower portion of the transmission rod is an upper concave face. According to the grinding and dissolving device, grinding and dissolving can be achieved while a solution is contained, the flexible diaphragm is adopted as a bearing body of the grinding bottom face, the flexible diaphragm can be tightly attached to the grinding end face at the final stage of grinding, in this way, the ground granularity is finer, the dissolving efficiency is higher, and more labor is saved in use.

The invention discloses a long-distance seasonal throttling shoreline natural condition evaluation method based on a remote sensing image, and belongs to the technical field of ecological monitoring. The method comprises the following steps: synchronously obtaining a remote sensing image set, dividing the remote sensing image set into a plurality of sub-image sets according to seasons, obtaining a processed sub-image set, extracting topographic features of a region, extracting earth surface element information, obtaining a soil type distribution condition according to soil spectral data of the region, and establishing engineering time sequence distribution features; constructing a time-space coupled evaluation index system based on the earth surface element information, the soil type distribution condition and the engineering time sequence distribution characteristics; calculating a shoreline natural condition score of each region in the season based on the evaluation index system; and finally generating a seasonal natural state evaluation result covering the whole target shoreline. According to the method, the limitation of single-dimension evaluation is avoided, the real natural conditions of the shoreline in different seasons and different areas can be accurately and systematically reflected, and comprehensive data support is provided for subsequent scientific decision making.

The invention relates to a shearing device for a tile press, which comprises a workbench, an upper cutter, a lower cutter and a driving part, and further comprises a material receiving table, a material receiving part is hinged to the material receiving table, an elastic part is arranged on the material receiving part, when the elastic part is in a natural state, an included angle formed by the upper surface of the material receiving part and the horizontal plane is less than 10 degrees, and the material receiving part is used for being clamped into a groove. And an elastic ring is arranged on the material receiving piece. Through secondary buffering of the elastic piece and the elastic ring, the impact force of falling of the plate body is comprehensively reduced, so that the situation that the plate body collides with the material receiving table or the plate body on the material receiving table is damaged due to collision is reduced, the product percent of pass of the metal panel is improved, the plate body is limited by clamping the material receiving piece into the groove in the plate body, and the production efficiency is improved. And the plate bodies slide downwards along the material receiving piece according to a specified path, so that the plate bodies can be stacked more orderly, and workers do not need to arrange the plate bodies.

The seamless continuously-formed knitted one-piece panty-hose comprises a first sock leg, a panty body and a second sock leg which are sequentially formed at a time. The pant body comprises a plain weave base layer formed by weaving basic yarns, and a floating thread weave and / or tuck weave plaiting layer formed by adding additional yarns on the base layer for weaving; and at least one part of the plaiting layer is a high-tension adjusting layer, so that the crotch part of the pants body presents a concave curved surface in a natural state. According to the obtained one-piece panty-hose, no seam is generated, and the problems that in the prior art, the seam affects the attractiveness and brings discomfort to a wearer are solved; due to the design of the high-tension adjusting layer, the problems of crotch falling, non-fitting and the like of the one-piece pantyhose are effectively solved; the product is further provided with a local tension reducing structure, so that the shape of the product is improved, and meanwhile, the product is more fit to wear.

The utility model discloses an intestinal juice perfusion testing device used before temporary fistulization reduction. The intestinal juice perfusion testing device comprises an outer shell with the hollow bottom, a perfusion assembly wrapped in the outer shell and a water pump assembly. One end of the filling assembly is plugged into the far end of the fistulization opening, and the other end is connected with a water outlet of the water pump assembly; the outer shell is semicircular, and the bottom of the outer shell is movably connected with the base plate of the two-piece fistulization bag. According to the intestinal juice perfusion testing device used before temporary fistulization and reduction, intestinal juice can be directly perfused into a far-end intestinal canal for temporary fistulization, the flowing condition of the intestinal juice in the natural state is simulated, and therefore the healing condition of a rectum anastomotic stoma, the recovery degree of the anus function and the adaptability of the colon function are evaluated more accurately.

The utility model provides an auxiliary device for sleeving a casing into a filling pipe, which comprises a curled film main body, the film main body is curled in a natural state to form a C-shaped tubular structure with a longitudinal opening, and horn mouth parts are arranged at two ends of the film main body. By arranging the curled film main body and utilizing the C-shaped tubular structure formed in the natural state, when the auxiliary device is sleeved into the filling pipe, the tubular film main body can form a temporary isolation layer between the casing and the filling pipe. And the chance that the casing is in direct contact with the port or the pipe wall of the filling pipe is reduced, so that the risk that the casing is damaged due to direct scratching is reduced, and the casing is protected. And the horn mouth parts arranged at the two ends of the film main body provide effective guidance for sleeving the auxiliary device into the filling pipe and subsequently sleeving the casing into the auxiliary device. Therefore, an operator can more easily align and place the auxiliary device at the port of the filling pipe, the alignment operation is simplified, and the smoothness of the sleeving process is improved.

The utility model belongs to cup taking device technical field, especially relate to a disposable cup taking device. A disposable cup taking device, include: cup body, its inside has the accommodating cavity, the top of cup body is equipped with with accommodating cavity's opening, cup support platform is movably established in accommodating cavity bottom, constitutes the bottom plate of accommodating cavity, and be configured as along the height direction of cup body slides to adjust the volume of accommodating cavity, elastic member, its setting in cup body, be used for to cup support platform provide the elastic thrust to opening direction, to continuously reduce the volume of accommodating cavity, and push disposable cup to opening direction movement, a plurality of elastic clamping jaw, it is configured to: in natural state elastic clamping the topmost disposable cup, to resist the thrust of elastic member makes opening area only topmost disposable cup exposes outside. The utility model has the advantages of more scene, better convenience.

The embodiment of the application provides a cleaning device and a control method thereof, and relates to the technical field of cleaning devices. The cleaning device comprises a machine body and a floor brush assembly; the floor brush assembly comprises: a mounting seat; a cleaning piece rotatably arranged on the front side of the mounting seat; and a front scraping strip arranged on the front side of the cleaning piece, the front scraping strip being capable of ascending and descending relative to the mounting seat. The front scraping strip comprises a first scraping part extending along the axial direction of the cleaning piece and a second scraping part extending laterally to the cleaning piece, and in a natural state, the bottom of the second scraping part is lower than the bottom of the first scraping part. The front scraping strip is configured to contact the second scraping part to the cleaning piece before the first scraping part contacts the cleaning surface when descending, so as to scrape the water on the side of the cleaning piece to the cleaning piece through the second scraping part when the floor brush assembly turns. Through the specific structure of the front scraping strip, the water stains on the cleaning surface can be scraped to the cleaning piece when the floor brush assembly is pulled backward and turns backward, so that the water stains are prevented from remaining on the cleaning surface, and the cleaning effect and the user experience are improved.

The utility model discloses a locking mechanism, a stamping storage battery bolt, a storage battery and a motor vehicle. The locking mechanism comprises a connecting piece and a locking hole formed in the connecting piece, a first clamping arm and a second clamping arm are arranged, and an abutting piece is installed between a bolt and the first clamping arm and between the bolt and the second clamping arm; an elastic piece used for keeping the separation trend of the bolt and the abutting piece is arranged between the head of the bolt and the abutting piece. The bolt sequentially penetrates through the elastic piece, the second channel and the first channel and is matched with the nut to be installed on the first clamping arm and the second clamping arm. The technical scheme has the advantages that the elastic piece is arranged between the head of the bolt and the abutting piece, the bolt and the abutting piece are normally separated by providing elastic force, so that rotation of the nut in a natural state cannot drive the locking mechanism to act, misoperation is prevented, and the locking mechanism can be locked only after the elastic force is overcome to enable the bolt to abut against the abutting piece. Locking can be effectively driven through rotation of the nut, and therefore reliable separation of a safe state and a working state is achieved.

The invention discloses a composite reinforcing method and device for a soft soil levee slope based on prestressed corrugated pile emergency support, and the method comprises the steps: investigating a to-be-reinforced levee slope and engineering geological conditions in an influence range of the to-be-reinforced levee slope, and obtaining investigation data; calculating by setting a slope stability analysis strategy to obtain a natural state safety coefficient; the state of the to-be-reinforced levee slope is judged, and a state result is obtained; according to a state result, a cement-soil mixing pile temporary construction platform, a composite reinforcing area, a prestress wave-shaped pile and a three-dimensional drainage system are designed; and performing construction preparation and reinforcement construction according to the design scheme. The problems of temporary emergency and permanent splitting, construction disturbance instability, high cost, river channel occupation, difficulty in considering efficiency and ecology and the like in the prior art are solved.

The invention provides an ultrasonic imaging device and an ultrasonic imaging system.The ultrasonic imaging device comprises an interventional catheter assembly and an operating handle assembly, the operating handle assembly is provided with a first handle end, and the interventional catheter assembly is connected to the first handle end; the operating handle assembly is further provided with a main body and a switching piece, the main body has initial damping, the main body can be switched between a first state and a second state through the switching piece, and the initial damping restrains the interventional catheter assembly when the main body is in the first state so that the interventional catheter assembly can deform from a natural state to a specified state; when the main body is in the second state, the initial damping relieves constraint on the interventional catheter assembly, and the interventional catheter assembly returns to the natural form from the specified form. According to the interventional catheter assembly, the interventional catheter assembly can be locked to the designated form through initial damping of the main body, one-key unlocking can be achieved through the switching piece, controllability is guaranteed, locking and unlocking operations are simpler, and the use experience is improved.

This application discloses a method and system for predicting reservoir bank landslides induced by reservoir impoundment based on the principle of refraction. The method includes: obtaining the natural slope angle above water in the natural state and the stable slope angle underwater in the saturated state of the target reservoir bank slope; introducing and calculating the refractive index to characterize the degree of difference between the natural slope angle above water and the stable slope angle underwater; the introduction of the refractive index is based on the understanding of landslide mechanisms: during reservoir impoundment, the water surface acts as an interface for abrupt changes in the physical and mechanical properties of the soil and rock mass, leading to a discontinuous reconstruction of the slope's stable morphology with the water surface as the boundary. The reservoir impoundment process follows the principle of mass conservation, and the actual inclination angle of the failure surface, instead of the natural slope angle above water, better reflects the mechanical state of the slope during instability; based on the value of the refractive index, the instability risk and progressive failure range of the target reservoir bank slope during reservoir impoundment are qualitatively or quantitatively predicted. This application improves the early risk identification and dynamic warning capabilities for reservoir bank landslides induced by impoundment.

The present application relates to the technical field of medical devices, and provides a system with a spiral structure for cavity embolization and a delivery method, the system comprising: an embolization device which is in a spiral structure in a natural state and can be freely stretched and contracted under stress; the embolization device comprises an inner mesh layer and an outer mesh layer which are concentrically arranged, and the sparseness of the outer mesh layer is greater than that of the inner mesh layer; the embolization device is used for sleeving the embolization stent and the inner circle of the spiral structure is tightly attached to the outer wall of the embolization stent. The system, after the release of the embolization device with a spiral structure, can tightly adhere to the periphery of the embolization stent, increase the diameter of the cavity part of the embolization stent, fill the entire cavity or cyst in a physical occupation manner, improve the occlusion effect, avoid the occurrence of internal leakage, and thus avoid secondary surgery. Moreover, since the sparseness of the outer mesh layer is greater than that of the inner mesh layer, the blood flow direction can be better changed, the blood flow speed is reduced, the endothelial material in the blood is quickly deposited in the embolization, the endothelialization is completed, and the tumor cyst is atrophied.

The utility model discloses an anti -pulling expansion bolt, including expansion sleeve, the bolt body of having expansion head in one end, the bolt body of having the stud portion in the other end is worn in expansion sleeve, and the stud portion is connected with the lock nut on the screw thread, and the expansion sleeve is surrounded with a plurality of lateral mouth extending along the axial direction, and the U type elastic sheet is buried in the lateral mouth, and the U type elastic sheet includes the first elastic sheet partial body of arranging outward, the second elastic sheet partial body of arranging inward, the first elastic sheet partial body is connected with the expansion sleeve to the one end of facing expansion head, and the other end is connected with the second elastic sheet partial body, and the second elastic sheet partial body stretches out the inside of lateral mouth, and the first elastic sheet partial body under the natural state does not stretch out the outside of lateral mouth, and the extrusion ring is equipped on the bolt body, and the extrusion ring is equipped between the lateral mouth and expansion head. When the expansion bolt is in the expansion state at the sleeve head part, will make the extrusion ring extrude the U type elastic sheet outward, causes its to stretch out the aperture and press into the bolt hole hole wall of reserving, thereby strengthens the anti -pulling capacity.

The present application relates to a self-correcting connector, the self-correcting connector product is composed of a contact, a spring, a limiting piece, a plug, a base and a shell. In the natural state, the spring is not deformed, and no elastic force is generated. When the spring is placed in the limiting piece, the spring is deformed under pressure, the spring exerts an elastic force on the contact, and the plug limits the contact. At this time, an independent elastic assembly is formed. When the two ends or one end is inserted into the second conductor, the contact exerts sufficient positive force on the two end conductors to complete the conduction and realize current transmission. The self-correcting connector has the advantages of controllable clamping elasticity, improved reliability and reduced maintenance cost.

The application discloses an anti-skid air column bag and a manufacturing process thereof, relates to the field of article packaging, and aims to solve the problem that an ice layer is formed on the surface of the air column bag during cold chain transportation, and it is inconvenient for people to exert force and grab the air column bag. Technical scheme points are as follows: the bag body is provided with a plurality of air cavities one arranged in an array, an air inlet channel is arranged on one side of the bag body, air valve membranes are arranged between the air inlet channel and the air cavities one to be in communication with each other, elastic sheets are fixedly connected to the surface of the bag body at the air cavities one, the surface of the elastic sheet is a plane in a natural state of the bag body, the air cavities one are inflated to make the elastic sheet bent and form a plurality of protrusions on the elastic sheet after the bag body is inflated, the elastic sheet is pushed out to form the protrusions after the air cavities one are filled with air and inflated, and the protrusions of the plurality of elastic sheets can increase the contact friction between the palm and the bag body during the carrying process, so that the bag body is prevented from sliding in the palm.

The utility model discloses a biliary tract inside and outside drainage device which comprises a drainage catheter, a fixing stay wire and a hard sleeve. The drainage catheter is composed of an inner drainage area, a narrow section covering area, a shaping area and an outer drainage area, and the interior of the drainage catheter is of a hollow structure. One end of the inner drainage area is designed into a cylindrical cone; a clamping table is arranged at one end of the outer drainage area and used for connecting a cap or a drainage bag; side holes penetrating through the inner cavity are formed in the outer walls of the inner drainage area and the shaping area; a marker point is arranged between the rear end of the side hole of the inner drainage area and the narrow section coverage area; the shaping area is curled into a loop in a natural state, and the shaping area can be straightened through the hard sleeve; the narrow section coverage area is distributed between the inner drainage area and the shaping area; the fixing stay wire comprises a fixing piece and a stay wire, and the tail end of the stay wire is connected with the fixing piece. The drainage catheter main body adopted by the utility model is made of a material with good biocompatibility; and internal drainage and external drainage can be realized. Multiple side holes are formed in the middle and the head end of the drainage tube, sufficient drainage is promoted, and infection risks are reduced.

The utility model provides a kind of planting device for obtaining root soil complex cohesion detection sample, including two identical shape shell, shell upper and lower ends are provided with opening, shell side is provided with multiple holes, when using, two shell are oppositely arranged and are connected, to make two shell form a whole, shell one end forms planting mouth, shell other end forms water permeable mouth, connector is respectively connected on planting mouth and water permeable mouth, the connector of water permeable mouth is provided with net body, planting groove is formed between two shell, planting substrate is filled in planting groove inner shell, plant grows on planting substrate.The utility model can effectively avoid the restriction to plant root system growth, make plant root system growth close to natural state, by the setting of both sides and upper and lower ends slot, the stability of planting structure is improved, avoid the damage to root soil complex in planting structure, greatly reduce the influence on test result.

The invention relates to a delivery sheath assembly and a thrombectomy system.The delivery sheath assembly comprises a dilator and a delivery sheath, the dilator comprises a far-end tip section, a pushing section and a deformation section, the far end of the pushing section is connected with the near end of the far-end tip section, and the radial size of the near end of the far-end tip section is larger than that of the far end of the pushing section; the deformation section is connected with the near end of the far-end tip section, the deformation section axially extends from one end connected with the far-end tip section to the near end and sleeves the far end of the pushing section to form a gap, and one end, far away from the far-end tip section, of the deformation section is a free end pointing to the near end; in the natural state, the maximum outer diameter of the deformation section or the maximum diameter of the circumcircle of the deformation section is smaller than the inner diameter of the conveying sheathing canal, the conveying sheathing canal is movably arranged on the pushing section in a sleeving mode, the far end of the conveying sheathing canal can stretch into the gap, and after the conveying sheathing canal is withdrawn from the gap, the deformation section recovers to the natural state. The conveying sheathing canal assembly is not prone to damaging the blood vessel wall.

The invention discloses a composite door and window with sound insulation and micro ventilation functions, and relates to the technical field of doors and windows. The window comprises a window assembly, a window frame assembly and an interlayer assembly annularly arranged between the window assembly and the window frame assembly. The interlayer assembly is provided with an inner side wall, an outer side wall and an inner cavity, the outer side wall is provided with an air inlet, the inner side wall is provided with an air outlet and a protruding piece, and the air outlet is covered with a petal piece so that sealing can be kept in the natural state. The window assembly is provided with a flexible belt, and the flexible belt is wound on the inner side wall of the interlayer assembly and connected with a sliding block. A sliding groove matched with the sliding block is formed in the window frame assembly. By sliding the sliding block, the flexible belt is tensioned and applies pressure to the convex piece, so that the inner side wall deforms, the deformation drives the petal piece to turn up through structural association, and therefore the air outlet is opened, and the micro-ventilation function is achieved. The micro-ventilation window is exquisite in structure, and controllable and quiet micro-ventilation is achieved while high sound insulation and sealing performance are guaranteed.

The invention discloses glass flatness inspection equipment and method, and relates to the technical field of inspection equipment, and the glass flatness inspection equipment comprises a workbench, a movable table, a measuring part, a partition plate and a baffle plate; a lifting part is arranged between the working table and the movable table; the measuring part is arranged on the top surface of the workbench in a sliding manner and is used for measuring the laser flatness; the multiple partition plates are evenly arranged on the top face of the movable table in parallel. The partition plate is perpendicular to the hinge shaft and located below the measuring component. The baffle is arranged on the top face of the movable table and is perpendicular to the partition plate. An air cavity is formed in the movable table, and air outlets are evenly distributed in the top face of the movable table. An air pump is mounted on one side of the movable table; the technical effects that the gravity deformation of the glass in a natural state or the inclination angle of an actual use scene can be simulated, and the adaptive scene is expanded are achieved.

The application discloses a low-tension cloth feeding frame device of a flatting, tentering and setting machine, and relates to the technical field of flatting and setting cloth.The device comprises a machine body, a mounting frame is fixedly connected to one side of the machine body, a finished cloth is arranged at one end of the mounting frame, and a plurality of auxiliary rollers are rotationally connected to the inner sides of the machine body, the mounting shell and the mounting frame respectively.The low-tension cloth feeding frame device of the flatting, tentering and setting machine disclosed by the application moves two adjusting plugs in the direction close to the adjusting motor by adjusting the motor, so that the adjusting plugs are away from one end of the elastic sheet provided with a roller.In a natural state, one end of the elastic sheet is close to the fixed rod, the roller is driven by the elastic sheet to slide in the sliding groove, so that the diameters of the two ends of the elastic sleeve are reduced, the diameter of the middle of the elastic sleeve is unchanged, the pressure between the finished cloth and the elastic sleeve is immediately changed by moving the adjusting plug driven by the adjusting motor, the stress of the two side edges of the finished cloth is quickly reduced, and the effect of preventing the finished cloth edges from being uneven due to excessive stress is achieved.

The invention discloses a power supply device, an installation method and atomization equipment, the power supply device comprises a shell, the lower side of the shell is open, an installation cavity is formed in the shell, and a movable hole is formed in the side wall of the shell; the mounting frame is mounted in the mounting cavity; the battery bin is movably inserted into the mounting cavity and located on the lower side of the mounting frame, a battery is mounted in the battery bin, and a clamping hole is formed in the outer wall of the battery bin; the movable block is located in the installation cavity and can move horizontally relative to the installation frame, a clamping arm is arranged on the lower side of the movable block in a protruding mode, a clamping protrusion is arranged on one side of the clamping arm, the key is installed at one end of the movable block and movably penetrates through the movable hole, one end of the tension spring is installed on the movable block, the other end of the tension spring is installed on the installation frame, and therefore a natural state and an extension state are achieved; in a natural state, the clamping protrusion is clamped in the clamping hole, when the key is pressed, the key drives the movable block to move, the tension spring is in an extension state, and the clamping protrusion is disengaged from the clamping hole. The battery compartment can be pulled out without effort, and the operation experience of a user is improved.

The utility model relates to the related technical field of conveying devices, in particular to a flexible chain plate conveying device which comprises a protection plate, a conveying mechanism is arranged on the inner side surface of the protection plate, and a connecting mechanism is arranged on the surface of one side of the protection plate. According to the flexible chain plate conveying device, through the arrangement of a connecting mechanism, a connecting plate is aligned with a connecting block, a clamping block is located in a groove of the connecting block, a spring is in a natural state, a clamping pin is pushed to drive the clamping block to slide in a clamping groove, when the clamping block slides to a proper position in the clamping groove in the connecting plate, a check block is rotated to drive the clamping block to be clamped in the clamping groove, and the spring is loosened; the stretching tension of the spring enables the clamping pin to drive the clamping pin clamping block to be fixed in the clamping groove in the connecting plate, stable locking connection is achieved, and connection of the conveying device is more convenient and stable.

The application relates to a mobile grab hand of a modular shielding door, which comprises a main support, a positioning plate, an elastic rotation limiting component and a bolt component. The main support is connected with a first lug plate. The positioning plate is connected with a second lug plate. A rotating shaft simultaneously penetrates through the first lug plate and the second lug plate, so that the positioning plate can rotate relative to the main support around the rotating shaft, and the rotating shaft extends along the Z-axis direction. The elastic rotation limiting component is arranged between the main support and the positioning plate, and is used for limiting the rotation of the positioning plate relative to the main support in a natural state. The bolt component is connected to the positioning plate and is used for being inserted into a lifting hole of the shielding door. The application has the freedom of rotating around the Z-axis with flexibility and rigidity, can adapt to the error of the modular shielding door being not perpendicular to the Y-axis direction when being installed on a special tray, can adapt to the precision error of the modular shielding door when being simultaneously moved along the Y-axis direction, and can also adapt to the construction error of the foundation on which the modular shielding door is installed.

An elastic terminal ferrule includes an annular body, a limit structure formed on the annular body, and a mating limit structure formed on the annular body for mating with the limit structure. When the annular body is in a natural state without radial expansion, the limit structure and the mating limit structure are spaced apart from each other in a circumferential direction. When the outer diameter of the annular body is expanded to a predetermined value, the limit structure and the mating limit structure abut against each other in the circumferential direction to prevent further radial expansion of the elastic terminal ferrule.

The present application relates to a kind of film-covered stent and stent system, film-covered stent includes stent body, film and the several anchor thorn of being arranged on stent body, film covers stent body, the free end of anchor thorn is covered with detachable protective sleeve.Stent system includes the preceding film-covered stent, also include sheath, the inner diameter of sheath is greater than the outer diameter of stent body in natural state, the film-covered stent and stent system provided by the present application, by adding a detachable protective sleeve at the free end of anchor thorn, to avoid the risk that the free end of anchor thorn contacts and pierces the film that is stacked and mutually extruded during sheathing, to avoid the problem that the whole implant fails due to film damage.

The invention discloses a rotary flushing large-flow drainage floor drain, and relates to the technical field of drainage devices. The floor drain core body is provided with a plurality of water flow channels, the effective water passing area of the drainage floor drain is remarkably increased, meanwhile, the water flow channels extend spirally so as to guide water flow to enter in the tangential direction and form rotary flushing flow, the flow resistance can be reduced, the drainage speed can be increased, the inner walls of the channels can be self-cleaned, and the service life of the drainage floor drain is prolonged. The possibility of adhesion and deposition of sundries is reduced, and the anti-clogging performance is enhanced. The outlet sealing piece is arranged, and the outlet end face of the water flow channel is obliquely arranged relative to the axis of the floor drain core body, so that the floor drain turning plate can automatically reset by means of gravitational torque in a natural state and is tightly attached to the outlet end face, the sealing reliability is ensured, peculiar smells and pests in a sewer are prevented from escaping upwards, and indoor environmental sanitation is guaranteed. According to the drainage floor drain provided by the invention, the effects of large-flow drainage, reliable sealing and low maintenance requirements are achieved through the synergistic effect of all the components.