49 results about "Plastic Syringe" patented technology

The present invention relates to a pre-filled syringe containing a VEGF antagonist and comprising a plastic barrel which is silicone-free, kits comprising this syringe and the use of the syringe for the administration of a VEGF antagonist in the treatment of ocular diseases.

The invention discloses a plastic syringe recycling and processing device. The device includes a working box and a working cavity located in the working box; a feeding port runs through the upper endwall of the working box; a first rotating shaft located on the lower side of the feeding port is rotatably arranged on the front and back cavity walls of the working cavity; the first rotating shaft is fixedly provided with a first squeezing barrel; a second rotating shaft located on the right side of the first rotating shaft is rotatably arranged on the front and back cavity walls of the workingcavity; and the second rotating shaft is fixedly provided with a second squeezing barrel. The device can recycle used plastic syringes; through a squeezing device, air and water left in the used syringes can be squeezed, the plastic syringes can be compressed, so that the volumes of the syringes can be decreased; the syringes can be broken through a breaking device, heating and melting can be carried out on the broken syringes, sterilization and disinfection on metal needles can be achieved during heating; and after heating and melting, melted plastic liquid can be separated from the metal needles, so that classification and recycling on the syringes can be accomplished.

The invention relates to a one-off plastic syringe conveying device, which belongs to the technical field of packing machinery. The conveying device comprises a stander, a turntable base, a turntable, a first guide rail, a pressing plate, a pair of first lead-out guide rails, and a first guiding groove between the pair of the first lead-out guide rails. The conveying device is characterized by further comprising a pair of second lead-out guide rails, at least one second guide rail and a sorting block, wherein the pair of the second lead-out guide rails corresponds to the lower parts of the pair of the first lead-out guide rails and corresponds to a gap path; a second guiding groove is formed between the pair of the second lead-out guide rails; the second guiding groove corresponds to the first guiding groove; the second guide rail corresponds to the lower part of the first guide rail, and a first passage is formed between the second guide rail and the first guide rail; the sorting block is fixed with the turntable base at the part corresponding to the gap path; and a needle-drawing groove is formed in the length direction of the sorting block. The one-off plastic syringe conveying device has the advantages of not only lightening the labor intensity for workers and improving the packaging efficiency and the packaging quality of a rear path, but also thoroughly putting an end to disqualified syringes to flow into the packaging processes.

The invention relates to a shallow lake greenhouse gas in-situ collection method and a device thereof. The device comprises an in-situ gas collection system, a gas storage system, and a gas sampling system, wherein the in-situ gas collection system can be fixed in lake sediments, the upper end of the in-situ gas collection system is connected with the gas storage system, the gas storage system floats on the water surface and collects greenhouse gases released from the sediments by using draining method, and the purified greenhouse gases are injected into a vacuum aluminum foil bag through a plastic syringe to store. The device has the advantages of smart design and simple operation, can effectively collect the greenhouse gases released from the lake sediments by using draining method, can eliminate the error of the sampling process caused by air in the device, and has high precision.

The present invention relates to a prefilled plastic container, such as a plastic syringe, comprising an aqueous botulinum toxin formulation. The aqueous botulinum toxin formulation in the prefilled plastic container is stable for a prolonged time period. Furthermore, the present invention relates to a kit comprising the prefilled plastic container, and to the use of the prefilled plastic container for therapeutic and cosmetic purposes.

The invention belongs to preparation of drug-carrier microspheres, and discloses a method for coaxially preparing an injectable PLGA (poly(lactic-co-glycolic acid)) drug-carrier microsphere by utilizing an electrospinning machine. The method comprises the following steps: dissolving PLGA in hexafluoro isopropyl alcohol to prepare a PLGA solution as a shell layer solution; dissolving PTX (Paclitaxel) and ETP (Etoposide) in a dichloromethane solution to prepare a solution as a nuclear layer solution; stirring the two solutions and respectively injecting the solutions into a disposable 1ml plastic syringe; performing high-pressure electrostatic spraying by utilizing the electrospinning machine; then performing lyophilization to prepare PLGA microspheres with embedded PTX and ETP. The coaxialdrug-carrier microspheres prepared by the invention can be subjected to sustained-release and controlled-release and can be used for injecting. According to the method disclosed by the invention, through characteristic observation on the microspheres and determination on particle sizes of the microspheres, the average particle size of the drug-carrier microspheres is 3 microns, and the surfaces ofthe drug-carrier microspheres are smooth without holes. The composite microspheres prepared by the method disclosed by the invention are safe and free of toxicity, and can be used for postoperative treatment of osteosarcoma; a specific sustained-release effect is beneficial for reducing the damage of anti-tumor drugs to a human body, the anti-tumor activity of the drugs is improved, and the microspheres have a broad research value and development prospects.

The present invention relates to a pre-filled syringe containing a VEGF antagonist and comprising a plastic barrel which is silicone-free, kits comprising this syringe and the use of the syringe for the administration of a VEGF antagonist in the treatment of ocular diseases.

The invention is provides a simple, convenient, and inexpensive method for producing lanthanide series rare earth ion adulterating bismuth titanate non-lead ferro-electricity nanowire, including 1) preparing the electrospinning precursor solution that preparing the lanthanide series rare earth ion adulterating bismuth titanate solution according to the formula of Bi4-xRxTi3O12 (R is lanthanide series rare earth element, 0 C04B 35 / 475 C04B 35 / 462 C04B 35 / 624 C04B 35 / 64 3 7 2 2007 / 4 / 29 101037330 2007 / 9 / 19 100427431 2008 / 10 / 22 2008 / 10 / 22 2008 / 10 / 22 Xiang Tan University Hunan 411105 Zhong Xiangli Liao Min Wang Jinbin Zhou Yichun yanyong 43114 The Patent Agency of Changsha City The People's Road, the City of Changsha (Yaoling), Hunan Province 410011

The invention discloses a safety infusion device, which comprises a plastic syringe needle, an infusion tube, a Murphy's drop apparatus, a slide switch, a filter, a syringe needle, and a syringe needle handle, wherein the rear of the syringe needle is provided with an outer sleeve, while the front is provided with a syringe needle sleeve; the rear of the syringe needle sleeve is arranged between the outer sleeve and the syringe needle in a sliding way; the front end of the syringe needle sleeve has a tapered opening structure; one side of the rear of the syringe needle sleeve is provided witha push handle; a push handle sliding groove is axially arranged on the sleeve corresponding to the push handle of the syringe needle sleeve; the rear end of the sliding groove is provided with a pushhandle notch along the circumferential direction of the outer sleeve; and the outer sleeve corresponding to the syringe needle handle is provided with a fixing handle, and a fixing tape matched with the syringe needle handle and the fixing handle. The safety infusion device can effectively prevent the syringe needle from moving, and is convenient, practical, and more safe and reliable.

A plastic-made nozzle cap for a plastic syringe includes a leg section, a cavity top wall portion, and a finger knob for the attachment / detachment of the nozzle cap. The leg section is structured for connection with a female Luer lock fitting formed face-to-face with an outer circumferential wall of a syringe nozzle. The cavity top wall portion is provided with a curved surface having a downwardly-convex, radius of curvature ranging from 0.6 to 12.0 mm for being brought into contact with a tip of the syringe nozzle to maintain sealing performance. The finger knob is arranged on an upper side of the leg section, and extends above the female Luer lock fitting in a state that a syringe barrel and the nozzle cap have been connected together.

The invention discloses a bio-glue syringe suitable for surgical positioning of tiny intrapulmonary nodules, which comprises a plastic storage bag with a sealed accommodation cavity, the storage cavity is arranged at one end inside the plastic storage bag, and the plastic storage bag is easily deformed when it is under pressure; The middle of the bottom of the plastic bag is fixedly connected with a hollow cylinder communicating with the containing cavity, and the inner wall of the cylinder is provided with an internal thread; the upper end has a transparent hollow tube with a tip, and the upper end of the hollow tube is provided with an external thread that matches the internal thread , the upper end of the hollow tube is sheathed in the cylinder, and is detachably connected with the internal thread in the cylinder. When the upper end of the hollow tube moves toward the cylinder, the tip is used to pierce the diaphragm between the accommodation chamber and the plastic storage bag, so that the biological The glue flows into the containing cavity, and by pressing the plastic storage bag, the biological glue flows into the patient's affected part through the hollow tube; it also includes a hard protective shell arranged outside the plastic storage bag and the cylinder, and the protective shell is arranged along its length or width. Has a tear-off seal. The bio-glue syringe suitable for surgical positioning of tiny intrapulmonary nodules is convenient for medical staff to operate and relieves pain of patients.

The invention relates to a shallow lake greenhouse gas in-situ collection method and a device thereof. The device comprises an in-situ gas collection system, a gas storage system, and a gas sampling system, wherein the in-situ gas collection system can be fixed in lake sediments, the upper end of the in-situ gas collection system is connected with the gas storage system, the gas storage system floats on the water surface and collects greenhouse gases released from the sediments by using draining method, and the purified greenhouse gases are injected into a vacuum aluminum foil bag through a plastic syringe to store. The device has the advantages of smart design and simple operation, can effectively collect the greenhouse gases released from the lake sediments by using draining method, can eliminate the error of the sampling process caused by air in the device, and has high precision.

The invention provides a preparation method of carbon-doped TiO2 nano-fibers. The preparation method includes the steps that a precursor solution is prepared firstly, titanium-containing nano-fibers are prepared, the precursor solution prepared in the step a is put in a disposable plastic injector, a metal needle head with the internal diameter ranging from 0.7 mm to 0.8 mm is selected, voltage of 9-10 kV is applied, the flow of a spinning solution is set to range from 1.0 mL / h to 1.1 mL / h, the distance between a drum receiver and the needle head ranges from 13 cm to 14 cm, and the rotating speed ranges from 1,600 r / min to 1,700 r / min; finally, the carbon fibers are carbonized, the nano-fibers in the step b are placed in a vacuum oven of the temperature of 40 DEG C for 24 h, dried nano-silver films are put in a tube type resistance furnace, the temperature is raised to 520-540 DEG C at the heating rate of 10 DEG C / min, the temperature is constantly kept for 1-1.5 h, then the materials are naturally cooled to room temperature, and the carbon-doped TiO2 nano-fibers are obtained. The preparation method has the advantages that the synthesis process is simple, the reaction conditions are mild, the production cost is low, good repeatability is achieved, the absorption spectrum range of TiO2 is widened through the carbon-doped TiO2 nano-fibers, and the catalytic degradation efficiency is improved.

The invention relates to a disinfection recovery device, in particular to a medical plastic syringe recycling device. The invention aims at providing an efficient medical plastic syringe recycling device. In order to solve the technical problem, the invention provides the medical plastic syringe recycling device; the device comprises a bottom plate, support legs, a first support, a first support rod, a second support, a first bearing, and the like, wherein the support legs are respectively connected with the front, back, left and right of the bottom of the bottom plate; the first support is fixedly connected with the right side of the upper part of the bottom plate; the first support rod and the second support are fixedly connected with the upper part of the left side of the first support;the first support rod is positioned under the second support; the first bearing is arranged at the left side of the first support rod. The medical plastic syringe recycling device realizes a functionof utilizing a machine to replace manual work for recovering plastic syringes, is rapid in recovering speed and large in single recovering amount, and has functions of completely disinfecting, and the like; furthermore, the medical plastic syringe recycling device also has the characteristics of being convenient to use, safe to use, simple to operate, low in manufacturing cost, and the like.

The invention discloses a method for preparing hollow nanofibers capable of keeping disinfectant for a long time, comprising the following steps: dissolving 1 g of polycaprolactone in 9 g of chloroform solvent, then adding 0.1 g of photocatalyst, and stirring and standing still Finally, polycaprolactone-titanium dioxide sol is obtained; a small amount of the obtained sol is taken out and placed in a plastic syringe, and a metal needle is installed at the front end of the plastic syringe, then the high-voltage electrostatic power supply is connected, and the grounding aluminum foil is set as the negative pole. Gently press the plastic syringe until the sol flows out before spinning; grind the spun fibers into pieces and place them in 500 ml of aqueous solution, stir them while irradiating them with ultraviolet light for 3 days, then filter them, and then dry them in a vacuum oven ; soak the dried nanofibers in a disinfectant to obtain a porous nanofiber substrate; the hollow biodegradable nanofibers obtained in the present invention have the characteristics of large liquid storage and long release time.

The invention discloses a safety infusion device, which comprises a plastic syringe needle, an infusion tube, a Murphy's drop apparatus, a slide switch, a filter, a syringe needle, and a syringe needle handle, wherein the rear of the syringe needle is provided with an outer sleeve, while the front is provided with a syringe needle sleeve; the rear of the syringe needle sleeve is arranged between the outer sleeve and the syringe needle in a sliding way; the front end of the syringe needle sleeve has a tapered opening structure; one side of the rear of the syringe needle sleeve is provided witha push handle; a push handle sliding groove is axially arranged on the sleeve corresponding to the push handle of the syringe needle sleeve; the rear end of the sliding groove is provided with a pushhandle notch along the circumferential direction of the outer sleeve; and the outer sleeve corresponding to the syringe needle handle is provided with a fixing handle, and a fixing tape matched with the syringe needle handle and the fixing handle. The safety infusion device can effectively prevent the syringe needle from moving, and is convenient, practical, and more safe and reliable.

A method for producing a component from a prefabricated and dimensionally stable preform, which is designed as a hollow body and has a prefabricated cavity and at least one opening, the method comprising the steps of inserting the preform (21) into a fitting In the cavity (2) of a plastic injection molding machine mold (1) with a first plastic injector; closing said mold (1); injecting a liquid plastic molding mixture of a first plastic (26) through said first plastic injector and introducing the liquid plastic molding mixture into the prefabricated cavity (23); injecting the first pressurized fluid into the liquid plastic molding mixture of the first plastic (26), displacing the plastic molding mixture in the forming a part cavity (28) in said plastic molding compound; and converting said preform (21) into said part, wherein said preform (21) is molded in a controlled manner and forms the outer contour of said part .