58results about How to "Rapid contraction" patented technology

The invention relates to the technical field of medical instruments, and discloses an adjustable anus dilatation device for an anorectal anastomat, the adjustable anus dilatation device for the anorectal anastomat comprises two connecting seats, a plurality of dilatation plates are annularly arranged between the two connecting seats at equal intervals, a movable rod is rotatably connected in one connecting seat, and the movable rod is rotatably connected in the other connecting seat. A fixed rod is fixedly connected to one side of the other connecting seat, the movable rod is sleeved with the fixed rod, a vibration assembly is connected into the connecting seat and connected with the expansion plate, and an adjusting mechanism is connected between one end of the fixed rod and the movable rod. According to the adjustable anal dilatation device for the anorectal anastomat, when a driving seat is rotated, a driving block and a driving rod are matched to drive dilatation plates to vibrate, meanwhile, a transmission gear is meshed with an arc-shaped rack to enable a screw to move on the driving seat, the dilatation plates are far away from one another, and therefore the dilatation plates vibrate circularly while intermittent anal dilatation is carried out on the dilatation plates; the anorectum is massaged and pre-loosened, so that the comfort and the safety of a patient are improved while the operation mode is simplified.

The invention relates to the technical field of environment monitoring, and discloses an expandable environment monitoring system device which comprises a supporting assembly and a meteorological monitoring assembly, the supporting assembly comprises a longitudinal supporting pipe, a rope, a spacing base plate, a longitudinal connector and an end, and the longitudinal supporting pipe, the longitudinal connector and the spacing base plate are sequentially connected from bottom to top to form a support; environmental parameters can be monitored, local or overall high-precision environmental parameter measurement in any size range can be realized, and the implementation is better; the shielding to the environment of the measured target is small, so that the environment information in a certain space is not lost; the multiple trapezoid environment monitoring structures are parallel and can form a plane trapezoid structure or an annular trapezoid structure, rigid fixing and flexible folding of the environment monitoring device are facilitated through the spacing base plates and the end elastic ropes, rapid folding and unfolding can be achieved, the supporting assemblies cannot move through end fixing when the environment monitoring device is unfolded, and the environment monitoring device is convenient to use. Therefore, full-coverage and full-surrounding monitoring of an environment monitoring area is realized.

The utility model discloses a double-layer hose which is characterized in that the double-layer hose comprises an inner pipe, an outer pipe, an outer pipe and an inner pipe, and the outer pipe covers the outer side of the inner pipe, and the outer pipe can be elastically shrunk so as to drive the inner pipe to be shrunk. Compared with the prior art, the telescopic hose has the advantages that the telescopic outer pipe is arranged, so that the hose can be shrunk into a shorter state in a natural state, the hose is convenient to store, and the outer pipe can play a role in protecting the inner pipe and preventing the inner pipe from being damaged; by arranging the inner pipe which cannot stretch out and draw back, the diameter of the inner pipe can be kept unchanged when the hose stretches out and draws back, and therefore the water flow can be easily controlled.

A ventricular assist device that can be used for ventricular aneurysm includes a stent, the stent having a first end and a second end opposite to each other, a polymer film attached to the first end of the stent, a base provided at the second end of the stent, and a force-bearing portion formed between the first end and the second end of the stent, which can spontaneously adapt to the contraction and relaxation movements of the heart. That is, when the force-bearing portion contracts radially under force, the stent stretches axially; when the external force disappears and the force-bearing portion is not radially stressed, the stent returns to its original state. A skirt is provided at the edge of the polymer film, and one end of the skirt away from the polymer film is reversely adhered to the polymer film. When the stent enters the ventricle, the portion of the skirt that is reversely adhered to the polymer film is separated from the polymer film and adsorbed to the ventricular cavity wall, thereby reducing or even solving the problem of residual leakage after surgery.

The utility model discloses a suspension shock absorber of an automobile chassis, and relates to the technical field of shock absorbers. The connecting rod comprises a rod body, a first connecting block is arranged at one end of the rod body, a second connecting block is arranged at the other end of the rod body, the first connecting block and the second connecting block can be connected with an automobile chassis and wheels respectively, and a damping device is further arranged outside the rod body. When violent jolting occurs, the first connecting block can drive the damping spring and the moving block to get close to the second connecting block, and the inner wall of the moving block is in threaded connection with the outer wall thread, so that the piston rod is decelerated through the outer wall thread and then damped when contracting into the cylinder barrel; the problems that when an automobile bumps violently in the running process and the weight in the automobile is large, a spring in the shock absorber shrinks rapidly, the automobile body vibrates violently possibly due to the fact that the contraction speed of the spring is too high, passengers feel more bumps, and the riding comfort is affected are solved.

The utility model discloses a kind of T-shaped rigid scraping device of gear hobbing machine, comprising: the connecting seat of installation on gear hobbing machine, rotatable and the vertical column of up and down motion is installed on the connecting seat, the horizontal installation of vertical column end portion has tool holder, the position of tool body can be adjusted by setting adjustable vertical column, rely on the screw hole reserved on machine tool, through the mutual combination of connecting seat, vertical column, tool holder and tool body and other 4 kinds of simple parts, through adjusting vertical column up and down and rotation, and the front and rear movement of tool body and other actions, gear part end face produced by burr can be scraped clean quickly. The vertical column of the utility model mechanism and tool body seat, tool body are simple in processing, light in weight, convenient to adjust, and the adjustment range is larger, so that the applicability of the device is wider, and the cost is reduced.

The utility model discloses a caster capable of quickly stretching and retracting and enhancing a supporting effect and a box group, which relate to the technical field of moving parts and are characterized in that the caster comprises a fixed plate, a sliding groove is formed in the middle of the fixed plate, and a hinge shaft is arranged in the sliding groove in a sliding manner; two symmetrically-arranged supporting feet are hinged to the hinge shaft, and wheels are arranged at the ends, away from the hinge shaft, of the supporting feet respectively. On the premise of rapid carrying and moving, the product stability is enhanced, the problem that the supporting legs of the product are tedious to assemble or unfold is solved, the supporting legs stretch out and retract rapidly, one supporting leg is pulled to stretch out automatically, and the horizontal torque and the inclination resistance of the product are increased after the supporting legs are pulled out; the casters are universal wheels, retraction and pull-out of the supporting feet do not affect movement of the product, and the product can be reliably fixed to the current position through a locking structure with a braking vane.

An object is to provide a balloon catheter that allows a balloon to rapidly contract even if the balloon located right above an opening is strongly pressed against an outer peripheral surface of a hollow shaft when contracting the balloon. A balloon catheter 1 includes a hollow shaft 11 having a lumen 11h1 through which an expansion liquid flows, and an expandable and contractable balloon 31 arranged so as to cover at least a part of an outer periphery of the hollow shaft 11. The hollow shaft 11 has an opening 11a1 that communicates between the lumen 11h1 and an inside of the balloon 31, and an outer peripheral surface 11b of the hollow shaft 11 has a groove 111 extending across the opening 11a1 and along the outer peripheral surface 11b.

The invention discloses a high-altitude windproof welding robot, and relates to the field of welding equipment, the high-altitude windproof welding robot comprises a machine body, the top of the machine body is provided with a rotatably connected welding device, the top of the welding device is provided with a welding head, the top of the machine body is rotatably connected with a shield for protecting a welding area, and the top of the machine body is symmetrically and rotatably connected with rotating rods; the two sides of the bottom of the protective cover are fixedly connected to the outer sides of the corresponding rotating rods correspondingly, an arc-shaped hole is formed in the top of the machine body, the radian of the arc-shaped hole is consistent with that of the protective cover, and the rotating rods rotate to drive the protective cover to be stored into the machine body from the arc-shaped hole. Influences of external wind, dust and other adverse factors on a welding area are effectively isolated, the stability and the welding quality in the welding process are ensured, in the high-wind-speed environment, the robot body and the shield component can be folded or contracted rapidly, wind resistance is reduced, and the stability of the robot in the severe environment is ensured.

The present invention discloses a portable soil sampling mechanism, including a bottom plate, a placement box and a support column, wherein the bottom of the bottom plate is fixedly connected with a universal wheel, the top of the bottom plate is provided with a slot, and a supporting telescopic rod is movably installed on the top of the slot, and a limiting hole is provided on the side of the supporting telescopic rod, and the inner wall of the limiting hole is movably connected with a limiting block. The portable soil sampling mechanism, through the provided limiting spring, L-shaped plate and special-shaped block, enables the first drill bit to be directly assembled to the side of the stabilizing block through the special-shaped rod, and through the provided supporting telescopic rod, supporting telescopic plate and special-shaped telescopic plate, the overall area of ​​the device can be greatly reduced when it is carried and transported, so that the collector does not need to use large-scale transportation equipment to transport the device, which greatly reduces the user's use cost to a certain extent, and when the internal parts of the device are damaged, the collector can disassemble and repair the special parts, thereby improving the collector's maintenance efficiency.

The invention discloses a dry-type cleaning and low-temperature minimal quantity lubrication combined system and a working method, solves the problem that in the prior art, workpiece lubrication and chip treatment are independently carried out, and has the beneficial effect of being convenient to operate. Comprising a liquid carbon dioxide bottle, a first-stage valve, a first valve and a cooling bin which are sequentially connected, part of liquid carbon dioxide is decompressed from the liquid carbon dioxide bottle through the first-stage valve to form gaseous carbon dioxide, and the liquid carbon dioxide and the gaseous carbon dioxide can flow towards the cooling bin through a pressure reducing valve after passing through the first valve or can be divided into two paths, one path directly flows to a heat exchange pipeline in the cooling bin, the other path passes through a pressure reducing valve and then is converted into gaseous carbon dioxide, the gaseous carbon dioxide flows into the cooling bin, and the gaseous carbon dioxide discharged from the cooling bin can enter an adjustable nozzle or a gas-liquid mixing nozzle after passing through a second valve.

The invention discloses a prefabricated transformer substation, which relates to the technical field of transformer substations and comprises a transformer substation box body, a heat dissipation frame is stacked in a hot gas concentration area above the transformer substation box body, and spirally coiled radiators are uniformly distributed on two sides of the heat dissipation frame. An inner baffle capable of horizontally moving along with spiral stretching and retracting of the radiator is arranged in the radiator, and breathing films capable of generating the breathing effect along with horizontal reciprocating of the inner baffle are symmetrically arranged in the centers of the other two sides of the radiating frame. On one hand, hot air in the box is forced to be discharged from the radiator on the leeward side through space compression of the breathing films on the two sides, on the other hand, the breathing films with the breathing effect can accelerate air flow in the upper portion in the box to break air partition in the box, and therefore the hot air in the upper portion in the box can be rapidly discharged through air flow of the air inlet and outlet.

The present invention discloses a foldable window reinforcement mechanical device and a method of use, and belongs to the field of smart home technology. The present invention includes an integral support module, a motion feed module and a glass fixing module; the integral support module includes a support, a fixing ring, a fixing rod and a shoe; the rotation feed module includes a screw, a screw nut, a connecting rod, a pull rod, a first slider and a second slider; the glass fixing module includes a suction cup, a support, a threaded rod, a sleeve shaft and a nut. Before the typhoon comes, the screw is rotated to drive the pull rod and the connecting rod to move, so that the device is unfolded, and fixed on the two opposite walls of the window through the shoe, and then the nut on the suction cup is adjusted so that the suction cup absorbs the glass and supports the glass; after the typhoon weather, the reinforcement device can be removed from the window and folded for storage. The device of the present invention can be folded and put away, and has the characteristics of small storage volume, easy storage, simple and quick operation, good protective rigidity and can be reused many times.

The utility model discloses a sandwich purification plate convenient to combine, and relates to the technical field of sandwich purification plates, the sandwich purification plate comprises a purification plate, an inserting piece and an inserting groove, a contraction part is arranged in a contraction groove, the contraction part comprises a sliding plate arranged in the contraction groove in a sliding mode, and the inserting piece is vertically fixed on one side face of the sliding plate. A limiting rod perpendicularly and fixedly connected with the inner wall of the innermost side of the shrinkage groove penetrates through the middle of the sliding plate, a buffering groove is formed in a rod body of the limiting rod, a positioning clamping piece is arranged in the buffering groove, and a pressing spring is fixedly connected between the other side face of the sliding plate and the inner wall of the innermost side wall of the shrinkage groove; through the arrangement of the contraction component, when the purification plate needs to be carried, only the sliding plate needs to be simply pressed, so that the sliding plate is stressed to contract towards the deep position of the inner side of the contraction groove, the insertion piece can be quickly contracted and hidden in the inner side of the contraction groove, and the situation that the contraction groove is directly arranged outside the purification plate and is prone to being collided and damaged is avoided.

The present invention relates to the technical field of hardware stamping, and in particular to a stamping device for small hardware, comprising an ejector assembly, wherein the ejector assembly comprises a mounting tube with through holes extending therethrough from top to bottom, the inner wall of the mounting tube being integrally formed with a separation ring to divide the interior of the mounting tube into two groups of upper and lower chambers, a push rod extending to the outside being slidably mounted inside one group of chambers, a first elastic member being elastically connected between the push rod and the separation ring, at least two groups of first connecting ports for expansion are provided on the periphery of the other group of chambers, one group of the first connecting ports being connected to a one-way valve device, and the other group of the first connecting ports being connected to a slow-release device or a pneumatic device. The stamping device for small hardware solves the shortcomings of the prior art that hardware is easily ejected and it is inconvenient to place the hardware.

The utility model discloses a lightweight assembly for a support frame of medical auxiliary equipment, which relates to the field of medical auxiliary equipment and comprises a support plate, a contraction assembly and an adjusting assembly for adjusting a mounting angle. The adjusting assembly comprises a rotating assembly arranged above the supporting plate, and a fixing assembly is arranged below the rotating assembly. The telescopic assembly comprises a mounting cylinder fixed in the supporting plate, telescopic rods fixedly connected in the supporting plate are arranged on the two sides of the mounting cylinder, a fastening plate is fixedly connected to the top ends of the telescopic rods, a fixing column is clamped and fixed in the fastening plate, and a sliding hole is formed in the top end of the fixing column. A rack plate is fixedly connected to the interior of the sliding hole, the rack plate is meshed with a rotating gear through a gear, and a connecting column is fixedly connected to the side face of the rotating gear.

The present invention relates to a side leakage prevention waist baby diaper, which relates to the technical field of diapers, and comprises a diaper main body and an air pumping device. The diaper main body is overlapped to form leg guard holes, and the diaper main body is provided with side leakage prevention elastic guards around the leg guard holes and on both sides of the absorbent core part. The air pumping device is connected to the inner side of the side leakage prevention elastic guard, and a shrinkable pressurized chamber is formed between the air pumping device and the first waistband part, which can prevent the diaper from side leakage.

The invention provides a quadrangular deployable space truss structure which comprises polyhedral joints, connecting pieces, truss rods, stay cables and transverse rod joints, the truss rods are connected with the polyhedral joints through the connecting pieces and fixed through flat-end groove pins, and a rotating joint is arranged in the middle of a transverse rod of each periodic unit, so that a truss can be freely unfolded and contracted; and the stay cables are hooked on the polyhedral joints through the hooks, so that the overall stability of the truss structure is ensured. The large space expandable truss structure has the advantages of being beneficial to expansion and contraction of the structure, flexible in adjustment and convenient to mount and dismount, assembly of the large space expandable truss structure is facilitated, and flexibility of space tasks is greatly improved.

The present invention belongs to the technical field of security monitoring, and in particular, relates to a self-retracting security lens that prevents abnormal damage, including a fixed lens barrel and a movable lens barrel, and a flexible sleeve is provided between the fixed lens barrel and the movable lens barrel, and a lens assembly is provided inside the fixed lens barrel and the movable lens barrel, and also includes: a support cover, the support cover fixed sleeve is arranged on the outside of the fixed lens barrel, and the support cover is hemispherical, and a single-chip microcomputer is arranged on the inside of the support cover; an installation sleeve is arranged on the outside of the movable lens barrel, and the outer wall of the installation sleeve is provided with an arc surface, and the installation sleeve is arranged on the inside of the support cover by rotating the arc surface, and the installation sleeve and the support cover are jointly installed with a start trigger unit. The present invention can unload and buffer the external force when the lens end is acted upon by an external force, and can respond quickly, and actively retract the lens quickly, with good protection effect.

The utility model relates to the technical field of automobile engine treatment equipment, in particular to a cracking, classifying and recycling device for an automobile engine. According to the technical scheme, the cracking reaction kettle comprises a cracking reaction kettle, and further comprises an opening mechanism which is rotationally mounted on the outer wall of the cracking reaction kettle and is used for isolating the periphery of the cracking reaction kettle after being linked and opened with the cracking reaction kettle. According to the utility model, the cracking reaction kettle, the opening mechanism, the driving mechanism and other structures are matched, and the opening mechanism can effectively isolate the outer wall of the cracking reaction kettle, so that people are prevented from being scalded due to being in contact with a high-temperature surface. The opening mechanism is designed to be quickly unfolded and contracted, so that the baffle can be quickly unfolded as required, and effective isolation protection is provided; and when not needed, the device can be quickly contracted, so that the space is saved, and excessive working areas are prevented from being occupied. An operator can easily control the state of the baffle plate according to needs, so that the requirements of safe isolation and scald prevention are met, and the operation is not influenced.

The utility model discloses a flatbed semitrailer platform quick widening locking structure, including widening platform and locking mechanism, the widening platform one end articulates on the semitrailer frame longitudinal beam, and the other end is through locking mechanism and semitrailer frame longitudinal beam lock joint cooperation, the widening platform has two conditions of folding and unfolding, widening platform is in the folding state, and is accommodated in the semitrailer frame longitudinal beam inside, and is parallel with the semitrailer frame longitudinal beam abdomen and is pasted together, widening platform is in the unfolding state, and is stretched and is arranged in the semitrailer frame longitudinal beam outside, and is perpendicular with the semitrailer frame longitudinal beam abdomen. The utility model has the advantages of: the ingenious utilization of the different moving state of lock plate can open, contract widening platform quickly, realize flatbed semitrailer platform width widening, satisfy more goods loading demand.

The utility model discloses a nasal aspirator body and a nasal aspirator. The nasal aspirator body comprises a power supply; the positive pressure pump comprises a positive pressure pump air outlet, and the positive pressure pump is arranged in the machine body shell; the electromagnetic valve comprises an electromagnetic valve first connecting port, an electromagnetic valve second connecting port and an electromagnetic valve third connecting port; the control device is used for being electrically connected with the positive pressure pump and the electromagnetic valve. Due to the fact that the nasal aspirator comprises the positive pressure pump, when the nasal aspirator works, the air outlet of the positive pressure pump outputs air, the air sequentially passes through the third connector of the electromagnetic valve and the second connector of the electromagnetic valve and enters the air bag cavity, and when the air bag is expanded to the required degree, the air in the air bag sequentially passes through the second connector of the electromagnetic valve and the first connector of the electromagnetic valve and is rapidly exhausted; the air bag in the suction head of the nasal aspirator is rapidly contracted, so that negative pressure is rapidly generated in the containing cavity, and the action of sucking snot is rapidly completed. The inflated air bag instantly releases positive pressure to enable the containing cavity to generate negative pressure, the nasal aspirator body does not need to be provided with a negative pressure cavity independently, and the structure of the nasal aspirator is simplified.

The utility model discloses a fishing line winding device with a cutting function, which relates to the technical field of fishing line processing and comprises a base, a worktable is fixedly mounted at the top of the base, a pay-off component is arranged on the rear portion of the worktable, a winding and cutting structure is arranged at the top of the worktable close to the front portion, and the pay-off component is connected with the winding and cutting structure. The winding and cutting-off structure comprises six driven rollers and a driving roller, the six driven rollers are symmetrically and rotationally installed in the position, close to the front portion, of the interior of the workbench, the driving roller is rotationally installed in the position, close to the middle of the front portion, of the interior of the workbench, and a chain belt is arranged between the driven rollers and the driving roller in a sleeving mode. According to the fish wire winding device with the cutting function, the winding and cutting structure is arranged to be matched with the fixing structure, fish wires of wire coils of different specifications are stored, the wound wire coils are automatically cut, and the problem that a traditional winding device is low in practicability and function is solved.

The invention relates to the technical field of postoperative rehabilitation devices, and discloses an elbow joint fracture postoperative functional rehabilitation exercise device. An upper fixing cylinder is connected with a lower fixing cylinder through a first spring and a traction rope, and the outer side wall of the upper fixing cylinder is fixedly connected with a cylinder body with an opening in the lower end; the device further comprises a buffer assembly arranged in the cylinder and connected between the first spring and the traction rope, the buffer assembly comprises an upper support, a lower support, a plurality of sets of telescopic frames and a damping piece, the upper support and the lower support are slidably connected into the cylinder, a second spring is fixedly connected between the upper support and the lower support, and the elastic force of the second spring is larger than that of the first spring. The telescopic frames are evenly and symmetrically distributed between the upper support and the lower support, each telescopic frame comprises a first connecting rod hinged to the lower surface of the upper support and a second connecting rod hinged to the upper surface of the lower support, and the ends, close to each other, of the first connecting rods and the second connecting rods are hinged through hinged shafts. And an accident protection effect can be achieved in the use process of a patient.

The utility model discloses a tunnel wind zone rapid contraction device which comprises a steel rope parallel to a tunnel and arranged at the top of the tunnel, the top of the steel rope is fixedly connected with the inner top of the tunnel through anchor bars, the anchor bars are arranged at equal intervals, and a wind zone safe contraction distance is arranged between the adjacent anchor bars at one end, close to a tunnel face, of the steel rope. The ends of the wind belts are connected with the steel ropes through fixing assemblies walking along the steel ropes, and the middles of the wind belts are connected with the steel ropes through movable sliding buckles arranged at equal intervals. The effect of improving the use safety of the wind belt and the intelligence of wind belt state switching is achieved.

The utility model relates to a low-pressure telescopic heating device which comprises a base, a candle bottle, a light-emitting structure, a telescopic heating module and a controller. The independent low-voltage electrified heating rod is adopted, the height and the temperature are automatically adjusted through the telescopic structure and the controller, a point heating mode is adopted, the heating rod directly stretches into the center of the wax body to heat and melt the wax body to achieve the fragrance diffusion effect, the heat dissipation effect of the product and the wax body is good, and the generated fragrance effect is in an excellent state; the device is smokeless, has no potential harm to the environment and people, is complete in comprehensive protection measure, and is safe, energy-saving and environment-friendly; a light-emitting structure comprising two sets of light-emitting lampshades is adopted, and the functions of atmosphere lighting and aromatherapy are achieved; after heating and fragrance diffusion are stopped, the heating rod rapidly shrinks, and the loss of wax liquid is extremely low; and cyclic utilization of the heating device can be realized in a manner of adding aromatherapy wax liquid into the candle bottle.

The invention belongs to the technical field of security and protection monitoring, and particularly relates to a self-retracting security and protection lens capable of preventing abnormal damage, which comprises a fixed lens cone and a movable lens cone, a flexible sleeve is arranged between the fixed lens cone and the movable lens cone, a lens assembly is arranged in the fixed lens cone and the movable lens cone, and the self-retracting security and protection lens further comprises a supporting cover, the supporting cover is fixedly arranged on the outer side of the fixed lens cone in a sleeving mode, the supporting cover is hemispherical, and a single-chip microcomputer is arranged on the inner side of the supporting cover; the mounting sleeve sleeves the outer side of the movable lens cone, the outer side wall of the mounting sleeve is provided with an arc surface, the mounting sleeve is rotatably arranged on the inner side of the supporting cover through the arc surface, and the mounting sleeve and the supporting cover are jointly provided with a starting trigger unit. When the lens end is subjected to external force, external force can be unloaded and buffered, quick response can be achieved, the lens is actively and quickly contracted, and the protection effect is good.

The utility model discloses a moving mechanism for a plenum chamber wall plate of a plane cascade tester, the plenum chamber wall plate comprises a first wall plate and a second wall plate, and an airflow channel is arranged in the plane cascade tester. The moving mechanism comprises a translation mechanism for controlling the second wall plate to move along the axis direction of the airflow channel relative to the first wall plate, and a lifting mechanism for controlling the first wall plate and the second wall plate to lift and move in the vertical direction; the translation mechanism comprises a worm, a transmission plate and a driving device for driving the worm to rotate, the worm is installed on the first wall plate through a bearing seat, a long through hole is formed in the first wall plate, the transmission plate penetrates through the long through hole and then is installed on the second wall plate, the transmission plate is provided with a hole for the worm to penetrate through, and the hole is a turbine hole in meshing transmission with the worm; the lifting mechanism is a lead screw transmission mechanism, the lead screw transmission mechanism comprises a lead screw assembly, and the lead screw assembly is connected with the first wall plate. The translation mechanism can rapidly achieve rapid front-back movement of the second wall plate, the lead screw transmission mechanism drives the plenum chamber wall plate to ascend and descend, and the movement process is accurate, stable and reliable.

The invention provides a balloon plugging device for ultrasonic 3D printing, which comprises a multi-cavity catheter, the multi-cavity catheter comprises an outer layer protective sleeve, an inflation catheter and an ink delivery pipe, the inflation catheter and the ink delivery pipe are located in the outer layer protective sleeve, and the axes of the outer layer protective sleeve, the inflation catheter and the ink delivery pipe are parallel; the outer-layer protective sleeve is provided with a first sealing face and a second sealing face which are perpendicular to the axis, the first sealing face is the front end face of the outer-layer protective sleeve, the second sealing face is located at one end close to the front end face of the outer-layer protective sleeve, and the position, between the first sealing face and the second sealing face, of the outer-layer protective sleeve is connected with a pneumatic balloon. The pneumatic balloon is communicated with a cavity between the first sealing surface and the second sealing surface; the front end of the inflation catheter is communicated with the pneumatic balloon, and the front end of the ink conveying pipe extends out of the first sealing face. Blood flow and uncured acoustic ink can be physically isolated through the pneumatic balloon, the ink is prevented from being washed away by the blood flow, and meanwhile, hydrogel particles of the acoustic ink are prevented from entering blood to cause thrombus.