55results about How to "Adhesion will not" patented technology

The invention discloses nanometer medicament microspheres. The microspheres comprise a medicament, nanoparticles, a polymer and medicinal auxiliary materials. The invention further provides a preparation method of the nanometer medicament microspheres. The method comprises the following steps of: preparing a medicament and medicinal auxiliary materials into a nanometer medicament; adding the nanometer medicament into a polymer-containing organic solvent mixed solution for emulsifying; adding a nanometer medicament-in-oil mixed suspension into a water mixed suspension containing nanoparticles or containing nanoparticles and a surfactant for emulsifying to obtain an oil-in-nanoparticle mixed suspension-nanometer medicament-in-oil compound emulsion; and curing the obtained compound emulsion, and centrifugally collecting microspheres, wherein the obtained microspheres comprise the medicament, nanoparticles, the polymer and the medicinal auxiliary materials. An appropriate polymer material and an appropriate microsphere preparation method are selected, the prepared microspheres have high envelop rate, and a layer of self-assembled nanoparticles on the surfaces of the microspheres has the effects of improving cell adhesion and reducing inflammation and microencapsulation caused by local excessive acid and hydrophobic materials. The method disclosed by the invention can be applied to preparation of other medicament slow release or controlled release microspheres.

The invention discloses a method for preparing microspheres by using oil-in-nanoparticle mixed suspension-nanometer medicament-in-oil. The method comprises the following steps of: preparing a medicament and medicinal auxiliary materials into a nanometer medicament; adding the nanometer medicament into a polymer-containing organic solvent mixed solution for emulsifying; adding a nanometer medicament-in-oil mixed suspension into a water mixed suspension containing nanoparticles or containing nanoparticles and a surfactant for emulsifying to obtain an oil-in-nanoparticle mixed suspension-nanometer medicament-in-oil compound emulsion; and curing the obtained compound emulsion, and centrifugally collecting microspheres, wherein the obtained microspheres comprise the medicament, nanoparticles, the polymer and the medicinal auxiliary materials. An appropriate polymer material and an appropriate microsphere preparation method are selected, the prepared microspheres have high envelop rate, and a layer of self-assembled nanoparticles on the surfaces of the microspheres has the effects of improving cell adhesion and reducing inflammation and microencapsulation caused by local excessive acid and hydrophobic materials. The method disclosed by the invention can be applied to preparation of other medicament slow release or controlled release microspheres.

The invention discloses adriamycin-containing nanometer medicament microspheres, which comprises adriamycin, nanoparticles, a polymer and medicinal auxiliary materials. The invention further provides a preparation method of the microspheres. The method comprises the following steps of: preparing adriamycin and the medicinal auxiliary materials into a nanometer medicament; adding the nanometer medicament into a polymer-containing organic solvent mixed solution for emulsifying; adding a nanometer medicament-in-oil mixed suspension into a water mixed suspension containing nanoparticles or containing nanoparticles and a surfactant for emulsifying to obtain an oil-in-nanoparticle mixed suspension-nanometer medicament-in-oil compound emulsion; and curing the obtained compound emulsion, and centrifugally collecting microspheres. An appropriate polymer material and an appropriate microsphere preparation method are selected, the prepared microspheres have high envelop rate, and a layer of self-assembled nanoparticles on the surfaces of the microspheres has the effects of improving cell adhesion and reducing inflammation and microencapsulation caused by local excessive acid and hydrophobic materials. The method disclosed by the invention can be applied to preparation of other medicament slow release or controlled release microspheres.

Disclosed is a jacket for any one of an impression cylinder (19a, 109b) and a transport cylinder (112) of a printing press, which jacket is wound around any one of the impression cylinder (19a,109b) and the transport cylinder (112) of a printing press so as to prevent ink from adhering to the cylinder, the jacket produced by plating the front side of a sheet-shaped base (1) having convex and concave portions (2) thereon with a metal having ink-repellent particles (3) dispersed therein, in a manner that the convex and concave portions (2) on the front side of the sheet-shaped base (1) are left.

The invention relates to a hydraulic fluoride varnish material, which includes a film-forming material, a fluoride and a volatile solvent, and also includes an adhesion promoter and a suspending aid. The fluoride is superfine inorganic fluoride powder with good water solubility and its adding amount in a coating material is 1-7mg / ml; the particle size of the inorganic fluoride powder is 0.1-10.0 micrometers; and the content of the film-forming material in the coating material is 20%-90%. The hydraulic fluoride varnish material provided in the invention is a premixed single-component fluoride particle suspending magma and contains 5% of fluoride. During application, the hydraulic fluoride varnish material is directly daubed on a tooth surface, needs no blow drying, and gradually hardens into a film after encountering saliva in the oral cavity. The hardened varnish has a porous microstructure, and has good hydrophilicity, can fully release fluorine ions, and bring tooth fluorination and caries prevention functions into play.

Belonging to the field of sewage treatment equipment, the invention discloses sewage treatment equipment for heavy metal ions. The equipment comprises a treatment box, a filtering mechanism, a drainage mechanism, a drug supply reaction mechanism and a disinfection discharging mechanism. The treatment box is internally provided with a first partition board and a second partition board, the first partition board and the second partition board divide the internal space of the treatment box into a first cavity, a second cavity and a third cavity, the top of the treatment box is equipped with a water inlet port, the filtering mechanism includes a filter screen, a sewage disposal driving component, a sewage draining component and a driving component, the filter screen is horizontally arranged inthe first cavity in a circular ring, the side wall of the second partition plate is provided with a water control component, and the outer side wall of the treatment box is equipped with a condensingwater outlet pipe. While reaching sewage filtration, the equipment provided by the invention does not cause adhesion of sludge impurities and the like in sewage to the inner wall of the treatment box, and utilizes multiple treatment procedures to improve the sewage treatment efficiency and effect, also can separate heavy metals from sewage, and improves the recovery rate of heavy metals.

The invention discloses a non-woven fabric three-dimensional gold stamping process. The non-woven fabric three-dimensional gold stamping process comprises the following steps that 1, a non-woven fabric bottom plate is prepared, wherein patterns in a design draft are analyzed according to the design draft, the patterns are divided into a plurality of pattern layers, each pattern layer is a specialcolor and an independent plate, when printing is carried out on non-woven base paper, the non-woven base paper is subjected to continuous circulation printing and inter-plate drying, so that the plurality of pattern layers are overlapped, and finally form a complete three-dimensional pattern on the non-woven base paper to obtain a non-woven fabric bottom plate; 2, the non-woven fabric bottom plateis treated, and slurry coats the surface of the pattern on the non-woven fabric bottom plate; 3, gold stamping is carried out, the processed non-woven fabric bottom plate is installed on a gold stamping device for the gold stamping, and the gold stamping is completed to obtain a semi-finished product; and 4, the semi-finished product is put into a drying oven, after baking, edge cutting, rollingand packaging of the semi-finished product, a finished product can be obtained. According to the non-woven fabric three-dimensional gold stamping process, the selective three-dimensional gold stampingon the surface of the three-dimensional pattern is completed, so that hot-stamping wallpaper with the layering sense is obtained, and a visual three-dimensional metal effect is formed.

The invention discloses growth hormone-containing nanometer medicament microspheres. The microspheres comprise a medicament, nanoparticles, a polymer and medicinal auxiliary materials. The invention further provides a preparation method of the microspheres. The method comprises the following steps of: preparing growth hormone and medicinal auxiliary materials into a nanometer medicament; adding the nanometer medicament into a polymer-containing organic solvent mixed solution for emulsifying; adding a nanometer medicament-in-oil mixed suspension into a water mixed suspension containing nanoparticles or containing nanoparticles and a surfactant for emulsifying to obtain an oil-in-nanoparticle mixed suspension-nanometer medicament-in-oil compound emulsion; and curing the obtained compound emulsion, and centrifugally collecting microspheres, wherein the obtained microspheres comprise the medicament, nanoparticles, the polymer and the medicinal auxiliary materials. An appropriate polymer material and an appropriate microsphere preparation method are selected, the prepared microspheres have high envelop rate, and a layer of self-assembled nanoparticles on the surfaces of the microspheres has the effects of improving cell adhesion and reducing inflammation and microencapsulation caused by local excessive acid and hydrophobic materials. The method disclosed by the invention can be applied to preparation of other medicament slow release or controlled release microspheres.

The invention relates to the technical field of clothes machines, in particular to a laser cutting mechanism used for clothes cutting equipment. The laser cutting mechanism used for the clothes cutting equipment comprises a working chamber, a laser generator, a laser base and a conveying network chain. A smoke pumping port and an air pumping port are formed in the upper portion and the lower portion of the conveying network chain respectively and are located on the same side of the conveying network chain. The position, corresponding to the smoke pumping port, of the other side of the conveying network chain is provided with an air supply draught fan. The laser base is arranged above the conveying network chain. The laser generator is installed on the laser base. A tailing sensor is arranged at the feeding end of the conveying network chain, and a stopping sensor is arranged at the discharging end of the conveying network chain. A conveyor belt used for receiving and conveying cloth is arranged below the discharging end of the conveying network chain. As the smoke pumping port and the air pumping port are formed in the upper portion and the lower portion of the conveying network chain respectively, the smoke discharge speed is high, the cooling effect is better, cloth adhesion is avoided, and it is ensured that cloth is sucked and tensioned on the conveying network chain.

The invention provides deacidification functional paper with a pH-responsive fluorescent probe for solid-phase deacidification repair of paper and a preparation method thereof. The deacidification functional paper with the pH-responsive fluorescent probe can be obtained by sequentially loading a nano alkaline composite deacidification agent and the cellulose-based fluorescent probe on a paper base, wherein the nano alkaline composite deacidification agent is obtained by grafting reaction of starch with nano zinc oxide, nano magnesium oxide and nano titanium dioxide; and the cellulose-based fluorescent probe is a cellulose-based material grafted with rhodamine isothiocyanate. The deacidification functional paper with the pH-responsive fluorescent probe has the same compositions with ordinary paper, has no by-products in the deacidification process, can monitor the acidification degree of the paper through fluorescence intensity change of the fluorescent probe, adjust the alkalinity formula of the functional paper according to different acidification degrees, has the characteristics of being simple to use and convenient to replace, and is suitable for emergency deacidification repairand preventive protection of book paper.

The invention discloses a soft capsule and a preparation method thereof. The preparation method comprises the following step: adding a crystallizing agent into a soft capsule shell to ensure that a layer of crystalloid powder can be kept on the surface of the soft capsule shell all the time. The soft capsule has the advantages that due to the crystalloid powder, the surface of the soft capsule shell can keep dry and clean in the conditions that the water content of the soft capsule is relatively high and the texture of the soft capsule is relatively low; when a plurality of soft capsules are stacked for packaging, no adhesion is formed among the soft capsules; being soft, the soft capsule is relatively excellent whether being taken orally or chewed; as no adhesion is formed among the soft capsules provided by the invention, the defect that adhesion is easily formed among soft capsules prepared according to the conventional production method is overcome, the finished product ratio is improved, the product quality is improved to an extremely high level, and the production cost is reduced. The preparation method is simple, convenient, fast, high in production efficiency, excellent in application effect, and significant in popularization.

The invention discloses a propolis lozenge. The propolis lozenge is characterized in that the propolis lozenge is mainly prepared from, by weight, 10-50 parts of propolis alcohol extract, 25-100 partsof an inclusion agent, 100-500 parts of powdered sugar, 12-20 parts of a thickener, 4-20 parts of a flavoring agent, 2-8 parts of the a lubricating and anti-sticking agent and 5-20 parts of a film coating premix. The invention also discloses a preparation method of the propolis lozenge. The method comprises the following steps: inclusion, filtration, drying, crushing, mixing, granulation, tabletting and coating. The propolis lozenge is a throat heat clearing product produced by using the antibacterial and anti-inflammatory properties of propolis (the propolis contains a large amount of totalflavonoids), and is mainly suitable for people with throat discomfort.

The invention provides a portable feed granulation device for livestock breeding. The device includes a panel, a handle and an inserting board. The sliding edges of the two sides of a moving plate areembedded into a T-shaped sliding groove inside a main body; a drawer-like box is installed on the bottom of the side edge of the inside of the main body and can be pulled out. The inserting board isinserted in an inserted groove, the inserting board is manually pulled out from the inside of the inserted groove, prepared feed materials are added to the inside of the main body through a feeding hole, then the inserting board is re-inserted into the inserted groove, a hand-rocker is manually rotated so as to generate power, the power is transmitted to a lower compression column through an internal gear and a double-headed gear lever, the lower compression column thus presses a lower press plate to move downward, and the feed materials in the main body thus can be extruded out from a discharge hole.

The invention relates to the technical field of product cutting, in particular to an anti-bonding device which can effectively prevent bonding of residual glue on rollers. The anti-bonding device comprises a frame; and a cutter roller is mounted on the frame. The anti-bonding device is characterized in that an oil roller is arranged on one side above the cutter roller; the oil roller comprises a roller shaft, and an annular sponge body sleeving the roller shaft; a silicone oil layer or a mold releasing agent layer are coated on the outer peripheral surface of the sponge body; the outer peripheral surface of the sponge body is bonded with the cutter roller; the end part of the roller shaft is clamped at one end of a sleeve; a locking screw for fixing the roller shaft is mounted on the sleeve; and the sleeve is connected to and mounted on a bearing of the frame.

The invention discloses a silver ion controlled-release antibacterial dressing, and a preparation method and application thereof. The antibacterial dressing is prepared from polyvinyl alcohol, polyacid K13Na [AgP5W30O110] and water, wherein the polyacid K13Na [AgP5W30O110] accounts for 0.5-3% of the dry weight of PVA, and the mass ratio of the polyvinyl alcohol to the water is (1: 99)-(30: 70). The antibacterial dressing disclosed by the invention has good antibacterial performance and mechanical performance and has a good percolate absorption capacity, meanwhile, controlled release of silver ions is achieved, too fast consumption of silver ion concentration due to substances such as chloride ions and the like is avoided, long-acting bacteriostasis is realized, the preparation way is simple, and the manufacturing scale can be enlarged according to the proportion.

The invention discloses a horizontal continuous feeding electric arc furnace scrap steel distributing device and a distributing method thereof, and relates to the technical field of metallurgical feeding equipment, including a feeding channel, a preheating channel, a conveying roller table and several feeding bins arranged at intervals. The top and bottom of the feeding channel are equipped with a blanking port; the volume types of scrap steel stored in several feeding bins are different, and they decrease sequentially along the feeding direction, and some feeding bins at the beginning of the feeding direction are also equipped with useful It is suitable for the heating device for heating scrap steel; the present invention preheats scrap steel in advance by arranging a plurality of feeding bins, and setting heating devices in these feeding bins, which greatly improves the preheating temperature of the area near the bottom of the scrap steel material layer, making the scrap steel The temperature distribution of the material layer is more uniform, which can improve the production efficiency. It also solves the problem of melting and adhesion of light material scrap steel on the conveying roller table during the horizontal continuous feeding electric arc furnace feeding process, ensuring the normal use of the conveying roller table.

The invention provides an FFS packaging film, and a preparation method thereof. The FFS packaging film comprises three parts, i.e., an outer layer, a middle layer and an inner layer, which are sequentially arranged from outside to inside at a weight ratio of (1-2):(1-3):1, wherein according to parts by weight, the outer layer comprises 30-40 parts of LDPE 2420H and 60-70 parts of LLDPE LL0220AA, the middle layer comprises 30-40 parts of LDPE 2426H and 60-70 parts of LLDPE LL0220AA, and the inner layer comprises 30-40 parts of LDPE 2426H, 60-70 parts of LLDPE 1002BU, 1-2 parts of the anti-blockagent 10063, and 1-2 parts of a smooth masterbatch. The preparation method of the FFS packaging film provided by the invention has the advantages that the production technique is simple, equipment requirements are not strict, the cost is low, the efficiency is high, and the prepared film has good mechanical and surface friction properties and is not sticky during use.

The invention discloses an environment-friendly efficient heat transfer drying drum comprising a mandrel, an outer drum, an electrically conductive sliding ring and a plurality of heat transfer pipes.The outer drum comprises a drum section I and round seal plates I. The mandrel is arranged horizontally and penetrates through the round seal plates I at the two ends and is in seal connection with the round seal plates I fixedly, and a closed cavity is formed. The left end of the mandrel is sleeved with the electrically conductive sliding ring. The heat transfer pipes are parallel to the centeraxis of the mandrel and penetrate through the round seal plates I at the two ends and are in seal connection with the round seal plates I fixedly. Electric heaters are arranged in the heat transfer pipes and are electrically connected with the electrically conductive sliding ring. The outer walls of the heat transfer pipes are provided with spiral grooves. According to the further improvement, theouter wall of the drum section I is provided with a polyetheretherketone coating; the heat transfer pipes are evenly distributed on the circumference with the center axis of the mandrel as the centeraxis; a liner is arranged in the closed cavity; the round seal plates I are provided with temperature measurement installing pipes; and temperature measurement thermocouples are arranged in the temperature measurement installing pipes. The environment-friendly efficient heat transfer drying drum is resistant to adhesion and corrosion, high in thermal efficiency, significant in energy saving effect, friendly to environment, free of pollution and high in control precision.

The invention discloses a wool brush with an auxiliary smoothing structure. The wool brush includes a brush body and a roller. A fixed block is installed at the middle position of the front end of thebrush body. Connecting rods are welded in the fixed block, and slide grooves are formed in the bottom ends and the top ends of the connecting rods. Slide blocks are embedded in the two sets of slidegrooves. The top end of the slide block at the bottom end is connected with a rotating shaft through a bearing, and the top end of the rotating shaft is connected with another slide block through a bearing. The roller is fixedly connected to the middle position of the rotating shaft. According to the wool brush, when glue needs to adhere to the wool brush, two groups of buttons are rotated in theopposite direction to rotate a clamping block, and then the buttons are pulled upward. At this time, a protruding block moves along a slot, the clamping block is separated from the inner part of a clamping slot, the positions of the slide blocks are no longer restricted, the roller can be pulled to the right under the action of the slide blocks and the slide grooves, and then the brush body is immersed in the glue to ensure that the glue does not adhere to the roller, so that the degree of cleanliness of the roller is improved, and it is ensured that spring festival couplets do not adhere to the roller when the roller is rotating.

The invention discloses an asphalt concrete preparation process which comprises the following steps: S1, starting a power assembly, and driving a stone screening and crushing assembly and a stirring assembly to work by the power assembly; s2, feeding broken stones from a stone inlet, screening large broken stones and small broken stones twice through a stone screening and smashing assembly, enabling the small broken stones to fall into a stirring cavity, and extruding and smashing the large broken stones to be added into the stirring cavity; s3, introducing asphalt into an asphalt inlet, and controlling a switch assembly to open the asphalt inlet once when the stirring plate of the stirring assembly rotates by one circle, so that the asphalt quantitatively enters the stirring cavity and is uniformly mixed with the crushed stones; s4, after stirring is completed, placing a collecting vehicle at a discharging opening, then opening the material cover, and enabling the stirred asphalt concrete to flow into the collecting vehicle below; the preparation of the asphalt concrete is easy to operate, and the asphalt concrete prepared by screening stones is more uniform.

The invention discloses a surface flame demolding device of a Hazelett casting machine. The surface flame demolding device comprises two headless steel belts which are arranged on an upper frame and a lower frame and run in parallel, a casting cavity is formed between the two headless steel belts, the surface flame demolding device further comprises two gas conveying pipes, the two gas conveying pipes are horizontally arranged at the upper part and the lower part of the outlet end of the casting cavity, the two gas conveying pipes are fixedly connected with the upper frame and the lower frame respectively, and a plurality of burners are evenly arranged on the gas conveying pipes and face the steel belts. By arranging the gas conveying pipes and the burners, liquefied gas is insufficiently combusted, generated carbon black is evenly coated on the surfaces of the steel belts and adheres to the surfaces of the steel belts, molten aluminum passes through the casting cavity and then is cooled through water to become solid, diaphragm objects exist between the steel belts and aluminum plates, transmission is conducted through a transmission device, the aluminum plates and the steel belts are conveniently separated, adhesion to the steel belts is avoided, the service life of the steel belts is prolonged, and meanwhile, the surface quality of the steel belts is guaranteed.

The invention discloses a bending type handle of a hotpot ladle, and relates to the field of kitchen ware, in particular to a ladle for hotpot. The existing ladle for a hotpot is easy to drop into the hotpot; the adhered hotpot oil flows along the ladle handle; when being used for the second time, the hotpot oil is adhered on the hand. In order to conquer the disadvantage that the ladle for the hotpot is easy to drop into the hotpot, and the hotpot oil flows along the ladle handle, the invention provides a bending type handle of the hotpot ladle. The technical scheme is as follows: a connecting line between two ends of the hotpot ladle is 25-30 cm; the handle of the hotpot ladle is connected by two straight section fillets; the straight section near the ladle body is 8-10 cm; an included angle of 15-20 degrees is formed by the connecting line between the two ends of the hotpot ladle and the straight section; prisms are arranged at the straight section part and 1-2 mm high; and the distance between the prisms is 2 mm. The bending type handle has the beneficial effects that the risk of the ladle dropping into the hotpot is reduced; and if the hotpot ladle is placed on the desktop, the hotpot oil adhered on the handle can flow back to the ladle body.

The invention discloses a microwave ablation electrode needle device which comprises a handle and an electrode needle, the electrode needle comprises an inner tube, an outer tube and a cable, the inner tube is sleeved with the outer tube, the periphery of the outer tube is wrapped with an anti-adhesion sleeve, one end of the outer tube is partially inserted into the handle and communicated with a hot water pipeline in the handle, and the other end of the outer tube is connected with a needle head. One end of the inner pipe is partially inserted into the handle and is communicated with a cold water pipeline in the handle, and the other end of the inner pipe is open; the cable is arranged in the inner tube, one end of the cable is connected to the handle, the other end of the cable is connected with the microwave antenna, the microwave antenna is arranged in the needle head, the periphery of the end, close to the microwave antenna, of the cable is sleeved with the choke tube, and the ID recognizer and the temperature sensor are installed in the handle. The cable surface current is eliminated, the effect of an approximate spherical ablation area is achieved, and clinical requirements can be better met.

The invention provides a high polymer material mixing device for bamboo product decoration, and relates to the technical field of bamboo product decoration. The high polymer material mixing device comprises a mixing frame, a motor box is arranged at the bottom of the outer surface of the mixing frame, a motor is arranged at the bottom of the inner surface of the motor box, and an output shaft of the motor is fixedly connected with a rotating rod; stirring paddles are arranged on one side of the outer wall of the rotating rod, feeding pipes are arranged on one side of the top of the mixing frame, and a filter screen is arranged at the bottom end of each feeding pipe; and discharging pipes are arranged on one side of the bottom of the mixing frame, a butterfly valve is arranged on one side of the bottom of each discharging pipe, and a heating device is arranged on one side of the inner surface of the mixing frame. According to the high polymer material mixing device for bamboo product decoration, the problems that when an existing high polymer material mixing device for bamboo product decoration is used, due to the fact that high polymer materials are mixed, the high polymer materials are prone to adhesion, the effect is not good, the mixing effect is not improved, and long-term use is not facilitated can be solved.

The invention discloses an energy-saving water-saving arc printing and dyeing drying cylinder. The energy-saving water-saving arc printing and dyeing cylinder comprises a left shaft head, a barrel, aleft end enclosure, a right end enclosure and a right shaft head; the barrel is an arc cylinder with the height of the outer surface being gradually decreased from middle to two sides along the axis and is fixedly connected between the left end enclosure and the right end enclosure; the left shaft head is fixedly connected to the left side of the left end enclosure; the right shaft head is fixedlyconnected to the right side of the right end enclosure; a C-shaped supporting apparatus is arranged in the middle portion in the barrel; and the energy-saving water-saving arc printing and dyeing drying cylinder is further characterized in that a guide cylinder is arranged inside the barrel; the guide cylinder is of a sealed cavity structure, and two ends of the guide cylinder are respectively connected with the middle portions of the left end enclosure and the right end enclosure; the guide cylinder is of an oval structure and penetrates through an inner hole of a C-shaped annular plate; theouter surface of the barrel is provided with a polyether-ether-ketone coating; and the left shaft head, the barrel, the left end enclosure, the right end enclosure, the right shaft head and the guidecylinder are respectively made of stainless steel. The energy-saving water-saving arc printing and dyeing drying cylinder is high in structural strength and rigidity, resistant to adhesion, resistantto corrosion, low in energy consumption, and significant in energy-saving and water-saving effect.

The invention discloses a degradable and foldable biological amnion composite repair stent. The degradable and foldable biological amnion composite repair stent comprises a tube-shaped body with an axially extending through hole, an elastic balloon is arranged at the front end of the tube-shaped body, a one-way valve is connected to the tail end of the tube-shaped body, the one-way valve closes the through hole at the position, a foldable net-pipe-shaped polylactic acid bracket covers the outer surface of the elastic balloon, a biological amnion covers the outer surface of the foldable net-pipe-shaped polylactic acid bracket, a plurality of tiny holes are formed in net filaments of the foldable net-pipe-shaped polylactic acid bracket, and biological amnion powder fills the plurality of tiny holes; under the initial state, the elastic balloon, the foldable net-pipe-shaped polylactic acid bracket and the biological amnion are compressed to in the compact state; and under the use state, after the stent is implanted into the body and swelling occurs due to pressurizing, the tube-shaped or waterdrop-similar-shaped state can be formed complying with the lacrimal duct / uterine cavity, or the other spatial states adaptive to body cavity also can be formed.