84results about How to "Improve perfusion effect" patented technology

The invention provides a vacuum assistant resin casted protection coating, system and method of a permanent magnet motor rotor. The provided protection coating comprises an enhancing phase, demoulding cloth, and a flow guide net, wherein the enhancing phase, the demoulding cloth and the flow guide net are paved on the surfaces of the magnetic poles of a rotor in sequence. The end part of a resin injection pipeline and the end part of an air suction pipe are fixed on the exterior of the flow guide net. The rotor is hermetically connected to a vacuum isolation membrane, and the vacuum isolation membrane covers the enhancing phase, the demoulding cloth, the flow guide net, the end part of the resin injection pipeline, and the end part of the air suction pipe. Vacuum assistant resin casting and moulding equipment is applied to the magnetic pole protection of permanent magnet motor rotor so as to form a resin coating on the magnetic pole surfaces of a permanent magnet motor rotor; moreover the thickness of the resin coating is easily controlled, and mould sleeve tools are not required. The provided system and method can achieve a good casting effect, and thus the mechanical performance and anticorrosion grade of rotor magnetic poles can be enhanced.

The invention relates to a pouring filling method of a large-thickness area composite product, which is suitable for filling molding of a large-thickness composite product, and aims at solving the problems in a vacuum assisted filling molding process of a wind blade product. A supporting platform (5) and an isolation plate (4) are additionally arranged in the molding process to avoid the contact between a filling pipe (6) and a composite material reinforced fabric laying layer (1), so that the primary flow rate of resin in the filling process is reduced, the resin is prevented from entering the reinforced fabric in an impact way, the adequate time for infiltration between the resin and the reinforced fabric can be guaranteed, and the probability of unfavorable infiltration and insufficient rubber content can be reduced. A guide medium (8) strong in dispersion property is laid on the surface of the composite material reinforced fabric layer (1) to form a stripping layer (2), so that bubbles separated out from the resin through the supporting platform (5) and the isolation plate (4) can be collected and can be further reduced to be easy to pump, and a purpose of overcoming the filling blushing weakness of a product can be fulfilled.

The invention discloses a method for separating and culturing primary chicken hepatocytes. According to the method, EGTA (Ethylene Glycol Tetraacetic Acid) with low hepatotoxicity is added into a perfusate A to loosen the junction between hepatocytes, so that the dispersion degree of the to-be-separated hepatocytes is increased; double resistance is added into the perfusate A, a perfusate B and D-Hanks flushing fluid, so that the pollution is further prevented; and circulating perfusion digestion is adopted during digestion perfusion, so that the perfusion cost is greatly reduced. A serum-free cultural method of the chicken hepatocytes is established; compared with a traditional serum cultural method, the method disclosed by the invention has the same effect on the aspects of cell quantity, activity, function and the like, so that the problems caused by the existence of serum are solved and a foundation is laid for the substance metabolism study and biological product preparation on the basis of the chicken hepatocyte culture.

The present invention relates to a method for preparing and using architectural materials. The invention discloses a method for preparing and using a foaming epoxy resin base grouting material for treating the concrete floor empty drum. The material is composed of epoxy resin, diluting agent, firming agent, foaming agent and adjuvant according to proportioning. By means of pressure grouting equipment, it is capable of injecting the foaming expansion epoxy resin base grouting material into a concrete floor empty drum position to fill, to make the empty drum position to be compact, so as to repair the concrete floor. The foaming magnification of the material is from 5% to 100%, and is capable of pouring the concrete empty drum position to satiate; the material after solidifying has well water resistance, chemical resistance and certain strength. The raw material is easy to be obtained, operation is simple, construction is easy, and an operable method for repairing the concrete floor empty drum is provided.

The invention relates to a perfusion fixation device and a perfusion fixation method for a small animal experiment. The device comprises a pedestal, wherein the upper end face of the pedestal is provided with a first syringe fixing seat, a second syringe fixing seat, a first guide sliding chute and a second guide sliding chute; the first guide sliding chute corresponds to the first syringe fixing seat; the second guide sliding chute corresponds to the second syringe fixing seat; a first slide block is arranged in the first guide sliding chute in a sliding fit manner; a second slide block is arranged in the second guide sliding chute in a sliding fit manner; a first step motor and a second step motor are arranged in the pedestal respectively; the first step motor is connected with the first slide block through a first lead screw nut mechanism; the second step motor is connected with the second slide block through a second lead screw nut mechanism; both the first step motor and the second step motor are electrically connected with a motor control circuit; the pedestal is provided with a perfusion flow speed adjusting key and a motor control switch; and the perfusion flow speed adjusting key and the motor control switch are both electrically connected with the motor control circuit. The device and the method have the advantages of good perfusion effect, convenience in operation and simple structure.

The invention discloses a quantitative packaging device for particle feed. The quantitative packaging device for the particle feed comprises a feed particle storing tank, a quantitative discharging barrel, a packaging bag hot-stamping roller, a hot-stamping supporting frame, a packaging bag sealing frame, a hot-stamping wheel and a tangent line cutter; the quantitative discharging barrel is welded to the bottom of the feed particle storing tank; a rotating material distributor is installed in the quantitative discharging barrel; a feed particle input port is formed in the top of the quantitative discharging barrel, and is communicated with the interior of the feed particle storing tank; a feed particle output port is formed in the bottom of the quantitative discharging barrel, and is communicated with a feed injecting hopper which is welded to the bottom of the quantitative discharging barrel; quantitative discharging of feed particles is achieved; the packaging bag hot-stamping roller achieves hot stamping on the two side edges of each packaging bag, and the feed particle filling effect is good; and a sealing block a and a sealing block b complete sealing hot stamping, the middle portion of a package sealing part is cut to form a tearing line, and finished packaging products of packaged and connected feed particles can be conveniently torn.

A simple in vitro liver perfusion apparatus for digesting and separating liver cell characterized in that a container is installed on the engine block, inside the container being positioned a stainless reticular baffle plate, a heating device being installed in the container bottom under the stainless reticular baffle plate, a perfusion bottle with a side hole is fixed on the top surface of stainless reticular baffle plate by a fixing clamp, and a stainless filter net is fixed on the top part by bracket. An input end of peristaltic pump on the engine block is connected with an aseptic input conduct, while the out put end of the peristaltic pump is connected with an aseptic outputting conduct, needle handle and perfusion needle. It can realize two step liver perfusion for in vitro liver, obtain effective perfusion for anterior perfusion fluid and digestive fluid rapidly and continuously in the largest extent, and monitor liver tissue process

The invention relates to the technical field of medical instruments and provides a lung therapy apparatus, comprising an injecting-sucking component and a catheter component; the injecting-sucking component comprises an injecting-sucking subcomponent for injecting gas or liquid and a dirt discharge subcomponent for sucking and discharging lung dirt; the catheter component comprises an injecting tube and a dirt discharge tube, the irrigating subcomponent is in one-way communication with the irrigating tube, the dirt discharge tube is in one-way communication with the dirt discharge subcomponent, and the catheter component is provided with a sealed balloon, wherein the catheter component may be inserted into lung and the expanded balloon may be attached to the inner wall of trachea so as to arrive at sealing such that the lung is in a relatively sealed environment, the irrigating subcomponent may inject gas, liquid and the like into the lung through the injecting tube, and the injecting effect is good; the dirt discharge subcomponent may discharge dirt from the lung through the dirt discharge tube, and dirt discharging effect is good; the catheter component may also be inserted into a certain area of the lung, the expanded balloon is attached to the inner wall of the bronchial tube, and therefore, the local area of the lung can be cleared.

The invention discloses a full-automatic eyebrow pencil core filling machine which comprises an automatic quantitative rod feeding system, a quantitative filling system, a multi-station rotary disk system and a mechanical driving system and is characterized in that the quantitative filling system comprises a storing tank, a big valve body assembly, a small valve body assembly, a piston cylinder sleeve assembly and a piston rod driving system; an outlet of the storing tank is connected with an upper opening of the big valve body assembly; a lower opening of the big valve body assembly is connected with the upper end of the piston cylinder sleeve assembly; a piston rod of the piston cylinder sleeve assembly is connected with the piston rod driving system; inlets of the big valve body assembly and the small valve body assembly are connected through a hose assembly; the outlet of the small valve body assembly is provided with a discharge port assembly; the big valve body is a T-shaped valve body; and the small valve body is an L-shaped valve body. The full-automatic eyebrow pencil core filling machine disclosed by the invention has the advantages of breaking through traditional processes of pen making industrials, changing intensive manual labour to mechanization production, reducing the labor cost and increasing the labor efficiency and the product qualification ratio.

The invention discloses an integrated device for gap cutting and caulking on a road surface. The device comprises a car body, a stepper motor and a rotational motor; a movement frame is connected in the car body in a sliding manner, the bottom of the movement frame is provided with a cutting wheel, and the cutting wheel is rotationally connected with the movement frame through a revolving shaft; the cutting wheel is connected with a driving motor through the revolving shaft and a transmission belt; the right side of the cutting wheel is provided with a hairbrush wheel. By arranging the hairbrush wheel, a hairbrush roller and a water spray nozzle, the hairbrush wheel can be used for clearing sludge in a cut gap, the hairbrush roller is used for clearing the sludge, which is cleared out fromthe cutting gap, towards one side, far away from the cut gap, no sludge can be guaranteed in the cutting gap, and meanwhile, the peripheral sludge can be prevented from flowing back into the cuttinggap. The integrated device is provided with a pouring tank and a helical blade roller to stir bitumen mastic and maintain the fluidity of the bitumen mastic, extrusion and pouring are performed by using the helical blade roller, and the pouring effect and efficiency are improved, thereby realizing the completion of gap cutting and caulking at a time and improving the operation efficiency.

The invention discloses a mortar transfer device comprising a rack and a hopper fixed on the rack, wherein a self-stirring assembly is arranged in the hopper and comprises a stirring shaft, a stirring blade and a motor, the stirring blade is fixed on the stirring shaft which is connected with the output end of the motor, and the motor is connected with a power supply assembly assembled on the rack. The invention is a mortar transfer device which has simple, compact and beautiful structure, self stirring function, convenient movement, flexible steering, convenient hoisting, low cost and high efficiency and is provided with a power supply.

The invention belongs to the technical field of underground mines, and particularly relates to a grouting method of a microcrack rock mass. According to the grouting method, bentonite and ordinary Portland cement are made into grouting slurry according to a ratio, and by putting proper pumping pressure to inject the prepared grouting slurry into drill holes, a sealing effect is achieved. The bentonite slurry has the advantages of fine particles, diffusivity, good stability and the like, but is low in consolidating strength and week in osmotic pressure resistance and erosiveness resistance, however, slurry of the ordinary Portland cement has good groutability and mobility, therefore, the grouting slurry prepared by combining the bentonite and the slurry of the ordinary Portland cement has agood grouting effect on microcracks in strata with complex hydrogeological conditions, the water-plugging efficiency of the microcracks is greatly improved, and the cost is reduced.

The invention discloses a mouse primary hepatocyte perfusion type separating and in-vitro culturing method. The perfusion type separating of mouse primary hepatocytes is conduced through an in-situ living body perfusion method, a high-yield single-cell suspension can be obtained, and therefore a basis is provided for in-vitro long-time culturing of the primary hepatocytes. An applied stimulating culture solution contains mouse colony stimulating factors (CSF), mouse IL-2, mouse IL-6 and mouse recombinant hepatocyte growth factors r-mHGF and other cell factors; the primary hepatocytes can be separated through stimulation according to the reasonable ratio for in-vitro proliferation, and the number can reach 2.25 times the number of initially-added primary hepatocytes 72 hours later. The cellproliferation activity can be kept for at least 1-2 weeks under the in-vitro conditions, the problem that the primary hepatocytes cannot be cultured for a long time in vitro is solved, and thereforethe method can be used for infection of retroviruses, provides a basis for over-expression target genes or knockout target genes in in-vitro primary cells, and greatly expands the application field ofthe primary hepatocytes.

The invention discloses an injection process for a metalized polypropylene film dielectric capacitor .The injection process includes the following steps that an injection head for an epoxy resin filling adhesive is closely attached to the inner wall of a capacitor shell, the epoxy resin filling adhesive flows downwards along the inner wall of the capacitor shell, the level of the epoxy resin filling adhesive rises gradually, the position of the injection head shifts upwards constantly, and finally injection is completed .An injection tube serves as the injection head, and the outer wall of the injection tube is defined by an arc outer wall and a planar outer wall .The epoxy resin filling adhesive is prepared from, by weight, 45-60 parts of epoxy resin, 10-18 parts of polyester resin, 5-10 parts of a fire retardant, 30-45 parts of a filling material, 30-45 parts of a diluent, 0.5-1.5 parts of a defoaming agent, 22-35 parts of a curing agent and 0-1.5 parts of a curing accelerator .The epoxy resin filling adhesive is uniformly injected without bubbles inside, the injection process is simple, and the injection efficiency is high.

The invention discloses a pultrusion part for a wind power blade, a perfusion method of the wind power blade and the wind power blade. The pultrusion part is in a prism shape, and the cross section inthe thickness direction of the pultrusion part is in a parallelogram shape; the perfusion method of the wind power blade comprises the following steps that the pultrusion parts are arranged togetheraccording to the mode that splicing faces are spliced together, the adjacent splicing surfaces are parallel, a through seam is formed between the splicing surfaces, one layer of the pultrusion part isstacked upwards, so that the piling surface can be ensured to be on a plane; and the resin is poured from the lowest point of the highest layer of the pultrusion part stack. According to the method for pouring the wind power blade, the strength of the through seam can be enhanced, the risk that the pultrusion part resin is reversely wrapped is reduced, and the overall strength and the pouring effect of a main beam are improved.

The invention discloses an improved Celsior preservation solution for a donor heart, and a preparation method and application thereof. The improved Celsior preservation solution for the donor heart comprises potassium chloride, magnesium chloride, calcium chloride, mannitol, histidine, reduced glutathione, monosodium glutamate, sodium lactobionate and linagliptin, with the balance being double-distilled water. The preparation method comprises the following steps: adding the double-distilled water into a container, then successively adding potassium chloride, magnesium chloride and calcium chloride, and carrying out stirring until the color of the obtained mixture becomes clear; then adding mannitol, histidine, reduced glutathione and monosodium glutamate and carrying out stirring until the color of the obtained mixture becomes clear; adding sodium lactobionate and carrying out stirring until the color of the obtained mixture becomes clear; and adjusting the pH value and osmotic pressure value of the obtained solution, fixing the volume of the solution with the double-distilled water and preserving the solution at a low temperature of 4 DEG C. The improved Celsior preservation solution has the advantages of good and long-term organ preservation effect and capacity of promoting recovery of heart functions after reperfusion of the donor heart.

The invention relates to a renal artery sympathetic nerve ablating perfusion pipe. A pipe body is formed by connecting a hard pipe, a flexible pipe and a bending-controlled flexible pipe, wherein a spring is arranged in the wall of the flexible pipe, gaps among the inner walls of the hard pipe and the flexible pipe, a spring pipe sheath and leads form a water channel, four cavities are arranged inside the bending-controlled flexible pipe, two of the four cavities are water pass ways, another one is a lead pass way, and the other one is a traction wire pass way. According to the renal artery sympathetic nerve ablating perfusion pipe, the elasticity is increased, moulding can not be easily carried out, the recovery capability after bending is improved, the torque conduction capability is improved, and the perfusion capability is improved. The invention further relates to a catheter adopting the renal artery sympathetic nerve ablating perfusion pipe, wherein a handle is connected with the hard pipe, a structure for controlling the bending degree of the bending-controlled flexible pipe is arranged on the handle, the operation is easy, a porous ablating electrode is connected with the front end of the bending-controlled flexible pipe, the structure is stable, and the positioning is sensitive. The invention also provides an ablating system for the ablating perfusion of the renal artery sympathetic nerve. The ablating system comprises the catheter and a sheath pipe, and with match of the bending degree control, good controllability is realized.

The invention provides an isolated organ perfusion, preservation and transfer system. The isolated organ perfusion, preservation and transfer system comprises a preservation box and a supporting device connected with the preservation box; a temperature control pool, a circulating pool arranged in the temperature control pool as well as circulating pipelines communicated with the top and the bottomof the circulating pool correspondingly are arranged in the preservation box; the circulating pipelines comprise a first pipeline and a second pipeline which are not communicated with each other; peristaltic pumps, pressure sensors, flow sensors, oxygenators and the like are arranged on the first pipeline and the second pipeline; the supporting device comprises a bottom plate and a foldable bracket arranged on the upper surface of the bottom plate; and one end, far away from the bottom plate, of the foldable bracket is connected with the preservation box. The isolated organ perfusion, preservation and transfer system has the advantages of portability, high airtightness, simplicity in connection, convenience in loading and disassembling and the like, and facilitates clinical application.

The invention provides a stem cell culture perfusion device, and relates to the field of cell culture. The stem cell culture perfusion device comprises a base, a spraying mechanism and a sampling mechanism, wherein a perfusion box is arranged on the top of the base; a nutrient solution box is fixedly connected to the top of the perfusion box; a motor is fixedly connected to the top of the nutrientsolution box through a supporting plate; a rotating rod is mounted on the top of the perfusion box through a bearing; a connecting pump communicates with the right side of the nutrient solution box;a conveying pipe communicates with an output end of the connecting pump; the other end of the conveying pipe extends into the perfusion box; a rotating plate is fixedly connected to the lower portionof the conveying pipe; and a gear is fixedly connected to the bottom of the rotating rod and is engaged with the rotating plate. A nutrient solution stirred by a rotating shaft is discharged by a sprayer, the rotating rod is driven to rotate through a transmission wheel and a transmission belt, by transmission of the gear and the rotating plate, the sprayer rotates along the center of the rotatingplate, thus, the nutrient solution is uniformly sprayed to a culture solution on the bottom of the perfusion box, and the perfusion effect is improved.

The invention discloses a bearing structure member used for a wind power blade and a preparation method thereof. The bearing structure member is formed by stacking a plurality of pultrusion sheet layers with the same arrangement, and the edges at the two sides are aligned; the pultrusion sheet layers are formed by arranging even number of trapezoidal pultrusion sheets, and the trapezoidal pultrusion sheet is provided with at least one chamfer; the upper and lower edges of the adjacent two pultrusion sheets of each layer are arranged oppositely, horizontally aligned, the side walls of the adjacent trapezoidal pultrusion sheets are closely arranged and connected, and the connection part of the adjacent trapezoidal pultrusion sheets is formed with a diagonal seam between layers. According tothe invention, a weak straight joint is in a vertical section by designing the trapezoidal pultrusion sheet with a trapezoidal cross section and a stacking method to ensure the alignment of the beveled edges of the edge sheet, and the adhesion area of two adjacent pultrusion sheets of each layer is increased, the overall bearing capacity of a sheet structure is improved, and the problem that rectangular cross-section sheets form vertical straight joint when being stacked to reduce the rigidity and strength of the sheet structure is overcome.

The invention discloses a production line for pouring epoxy resin into an automobile ignition coil. The production line is composed of a preheating device, a filling device and a drying device. A new mechanical structure is adopted in the scheme. The production line has the following beneficial effects that in the automobile ignition coil pouring process, pouring is conducted in a negative pressure box firstly, after pouring of the interior of the negative pressure box is finished, the normal pressure state is achieved in the transferring process, epoxy resin in the automobile ignition coil can be compacted in the automobile ignition coil under the action of the barometric pressure, accordingly, the epoxy resin pouring effect in the automobile ignition coil is improved, and the structural strength and electrical performance of the automobile ignition coil are improved; and supplementing of the epoxy resin is then conducted through a resin guide pipe in a normal pressure box, and closing is conducted.

The invention provides a prefabricated part, a prefabricated part mold, a wind power blade and a manufacturing method of the wind power blade. One strip-shaped groove is formed in the lower surface ofa prefabricated part body and can extend from one end of the prefabricated part body to the other end of the prefabricated part body so that during subsequent blade machining and molding, poured resin materials can flow along the strip-shaped groove; a protruding part is directly arranged on the prefabricated part mold in a protruding mode, when a prefabricated part is machined, the strip-shapedgroove can be directly formed in the bottom of the prefabricated part body, secondary machining of the prefabricated part can be avoided, the influence on the performance of fibers on the lower surface of the prefabricated part body is avoided, and the machining process is simpler, so that the production cost of the prefabricated part is reduced; and the pouring speed and the pouring effect can beimproved, and the problem that a bottom layer cannot be completely poured through when pouring is carried out from top to bottom is solved, so that the possibility that a cloth layer is whitened is reduced, and the molding rate is increased.

The invention discloses a method for conveniently pouring an electrochromic liquid into an electrochromic rearview mirror. The method comprises the steps that a glass shell is manufactured, wherein the glass shell is formed by bonding a front glass substrate and a rear glass substrate through epoxy resin glue on the periphery of the front glass substrate and the periphery of the rear glass substrate, a liquid inlet opening is formed in one end of the glass shell, and a liquid outlet opening is formed in the other end of the glass shell; the electrochromic liquid is vacuumized to eliminate airin the electrochromic liquid before pouring; and in a normal-pressure environment, the liquid inlet opening is soaked in the electrochromic liquid, the electrochromic liquid flows into an inner cavityof the glass shell from the liquid inlet opening in a suction or pressure injection mode, and when the electrochromic liquid reaches the liquid outlet opening, the liquid inlet opening and the liquidoutlet opening are sealed and closed by using colloid. The method has the advantages that the electrochromic liquid can be filled in a normal-pressure environment, the filling operation is simple, and the manufacturing is convenient.

The invention provides a cement perfusion apparatus for construction machinery. The cement perfusion apparatus for the construction machinery comprises a pouring port, a motor, a perfusion box, a fixed bracket, a gas pressurizing pump, a control switch, a pressurizing pipe, a connecting pipe, a perfusion pipe, a spiral rod, a fixed plate and a bearing, wherein the upper end surface of the perfusion box is provided with the motor, the left side of the perfusion box is provided with the pouring port, the right end surface of the perfusion box is fixedly provided with the fixed bracket, the spiral rod is installed on the middle position inside the perfusion box, the lower end surface of the spiral rod is provided with the bearing, the lower end surface of the perfusion box is provided with the connecting pipe, the fixed plate is installed at the inner lower side of the connecting pipe, the left end surface of the connecting pipe is connected with the perfusion pipe, the right end surfaceof the connecting pipe is connected with a pressurizing pipe, the upper end surface of the pressurizing pipe is provided with the gas pressurizing pump, and the front end surface of the fixed bracketis provided with the control switch. By adopting the cement perfusion apparatus for the construction machinery, the problems of poor perfusion effect of the original cement perfusion apparatus for theconstruction machinery can be solved. The cement perfusion apparatus for the construction machinery is reasonable in structure, convenient in use and good in perfusion effect.

The invention discloses a manufacturing method of a double-crosslinked gel-based micro-fluidic chip. The manufacturing method comprises the following steps: (1) carrying out three-dimensional printingor mold casting on a hydrogel precursor solution under a primary crosslinking condition to obtain two partially-crosslinked hydrogel sheets with partial channel structures; and (2) laminating the twopartially-crosslinked hydrogel sheets to abut the channel structures, and applying a secondary crosslinking condition to make the two hydrogel sheets bonded and completely crosslinked in order to obtain the double-crosslinked gel-based micro-fluidic chip. The manufacturing method of the double-crosslinked gel-based micro-fluidic chip has the advantages of simple and convenient manufacturing process, non-toxicity, harmlessness and wide application range. The gel-based micro-fluidic chip produced through the method has the advantages of good stability and reliability, various forms and good biocompatibility.

The invention discloses a multi-frequency and multipoint heating device which comprises a heating device body and a heating tank. The heating device body comprises a molecular ring and a heater for heating the heating tank. The heater comprises a base and a sleeve mounted on the base. An induction coil winds the sleeve. A plurality of magnetic field generators for heating the heating tank coaxially fixedly sleeve the sleeve. The molecular ring sleeves the magnetic field generators. The heating tank is disposed in the sleeve. An inductor for inducting the magnetic field generators and the magnetic field generated by the coil is disposed in the heating tank. The multi-frequency and multipoint heating device has the advantages that by the molecular ring and the heater, the heating mode of the heating tank is changed into multi-frequency and multipoint heating including layered heating, alternate heating and simultaneous heating by adjusting one or more of the magnetic field generators according to water temperature conditions, even heating is achieved, uneven heating temperature caused by one-face single-point heating is avoided, heating is assisted by the molecular ring, and heat exchanging efficiency is increased.

The invention provides a medicine circulating type bladder instillation device. The medicine circulating type bladder instillation device comprises an instillation tube body, wherein the body is provided with an airbag for fixing an instillation tube; the airbag is provided with an airbag injection hole; the body is internally provided with a medicine jet flow cavity and a reflowing cavity; the jet flow cavity is provided with a medicine flowing-out hole and is located between the airbag and a far end of the instillation tube body; a mushroom head is arranged at one end of the reflowing cavity and the reflowing cavity is internally provided with a negative-pressure cavity; a negative-pressure suction hole and a medicine sucking-back opening of the negative-pressure cavity are formed in a lower surface of the mushroom head; the negative-pressure cavity is communicated with the medicine reflowing cavity through the negative-pressure suction hole and a short tube connected with the negative-pressure suction hole; the sucking-back opening is connected with a buffering chamber; an instillation liquid bag is arranged between a medicine outlet of the reflowing cavity and an inlet of the jet flow cavity; a liquid inlet is connected with an outlet of the reflowing cavity; a liquid outlet is connected with the inlet of the jet flow cavity; the jet flow cavity is internally provided with a jet flow valve and the direction of the jet flow valve is the same as a medicine jet flow direction; the reflowing cavity is internally provided with a reflowing valve and the direction of the reflowing valve is the same as a medicine reflowing direction.