165 results about "Syringes needles" patented technology

The invention relates to an electrostatic spinning device which is used for preparing direction arrangement nanofibers. The device comprises a high voltage source, an injector, an ejector jet pump which pushes the injector and a gathering unit, wherein, the high voltage source which is connected with the position of an injector pinhead is anode; the gathering unit which is ground connection by an earth wire is cathode; the device is characterized in that the gathering unit is an open fiber gathering device which consists of two parts of a performance element and a control unit; wherein, the performance element is an open roller which is formed by a centre pivot and a copper pipe which is parallel to the centre pivot, the two ends of the copper pipes are fixed on the periphery of an aluminum subpanel; the roller has a copper centre pivot; the control unit comprises a driving motor and a rotary speed controller; the motor drives the roller to rotate by a shaft joint; the motor shields the disturbance of electric field by a shield cover; the rotary speed controller controls the rotate speed of the motor, and the rotate speed is 800-1000rpm; the performance element and the control unit are all supported by a PVP plate. The produced nanofibre has the advantages of good order and thick film, and is suitable for biomedicine support materials.

The invention relates to a device and a method for twisting electrostatic spinning nanofiber into yarn in a jetting mode. A spinning solution is injected in an injector of a fiber jetting device, a needle of the injector is connected with a high voltage static electricity generating device, the spinning solution is subjected to the effect of electric field force to form a Taylor cone to jet flow, the spinning solution is deposited on the surface of a solvent in a water tank to form a felt-shaped material, nanofiber bundles are formed by the felt-shaped material through mobility of the solvent and traction of a roller and subsequent devices, a drafting device is heated to remove the solvent contained in the nanofiber bundles to achieve effective drafting, the nanofiber bundles are sent in a Laura jaw, an air compressor is started, the nanofiber bundles enter a double-nozzle twisting device and are twisted into the yarn through mutual effect of a first nozzle and a second nozzle, and the yarn is led out through an output roller and wound into a cylinder through a winding device. The device and the method for twisting the electrostatic spinning nanofiber into the yarn in the jetting mode integrate fiber jetting, condensation, bundle concentration, drafting, twisting and winding and are simple in device and process, suitable for various polymer spinning solutions and capable of achieving continuous and large-scale production of the nanofiber yarn.

OBJECT There is provided a coinfusion apparatus capable of automatically performing part or all of a coinfusion processing appropriately.

MEANS FOR SOLUTION A coinfusion apparatus 1 includes: a first robot arm 21 which retains a medical agent container; a second robot arm 22 which performs an operation of inserting a syringe needle of a syringe into a mouth of the medical agent container retained by the first robot arm 21, and an operation of inserting the syringe needle of the syringe into a coinfusion mouth of a transfusion bag; a coinfusion processing room 104 which shelters the robot arms, etc.; and a transfusion bag elevation inclination section 113 which retains the transfusion bag outside of the coinfusion processing room 104 and positions the coinfusion mouth of the transfusion bag in a coinfusion communication mouth 37 formed in the coinfusion processing room 104. A trash storage room door 13 is provided in a front surface of the coinfusion apparatus 1.

Conversion assemblies enable an air/water dental syringe adapted for connection to an existing tip such as an autoclavable tip to instead receive disposable tip. A conversion kit includes a cap subassembly with a cap body having a distal opening into which the disposable tip is inserted, and an adapter subassembly having a proximal end configured for connection to the syringe body and a distal end configured for coupling to the cap subassembly. The adapter subassembly includes one or more components with cut-outs, grooves or channels to direct air and water from the syringe body to the air-carrying channels and water-carrying tube of the disposable tip through the cap subassembly. To accommodate a wide variety of syringe styles, the adapter subassembly may include a proximal receptacle to receive a stem on the syringe; a proximal stem insertable into the syringe; one or more proximal air- or water-carrying tubes insertable into the syringe; or a threaded connection to the syringe body.

The invention relates to a method for preparing medicine-carrying nanofibers of a core-shell structure by virtue of Pickering emulsion electrospinning. The method comprises the following steps: 1) the preparation of a Pickering emulsion; 2) the electrospinning of the Pickering emulsion, namely sucking the Pickering emulsion obtained in the step 1) into a 10ml injector, connecting an injection pump with a receiving device, and preparing the nanofibers of the Pickering emulsion by virtue of electrospinning under the conditions of a DC voltage within the range of 15-25kV, an injection rate within the range of 0.1ml/h to 1.0ml/h and an interval between the receiving plate and the needle head of the injector within the range of 15cm to 20cm. Compared with the prior art, the method has the advantages that no any small molecular surfactant having biotoxicity needs to be added to the prepared Pickering emulsion as an emulsifier and the specific functions of nanoparticles are introduced to the Pickering emulsion, and therefore, the Pickering emulsion has specific advantages in application in the fields such as medicine release and tissue engineering.

The invention relates to a method for synthesis of strontium-barium titanate nanotubes. PVP is added into DMF to form a core-layer spinning solution; Ba(COOH)2 and Sr(COOH)2 are added into glacial acetic acid to obtain a first mixture, C16H36O4Ti is added into acetylacetone to obtain a second mixture, then PVP is added into alcohol to obtain a third mixture, and the three mixtures are mixed to form a shell-layer spinning solution; the prepared core-layer spinning solution is added into an inner tube, the shell-layer spinning solution is added into an outer tube, two truncated syringe needles with different diameters are sheathed together to form a coaxial two-layer spinneret, and an static electricity spinning method is adopted for spinning. The prepared product has a core-layer @ shell-layer structure, the core layer is PVP, the shell layer is PVP/[Ba(COOH)2+Sr(COOH)2+C16H36O4Ti), after sintering, PVP is volatilized at the high temperature, and the strontium-barium titanate nanotubes with the outer diameter of 200-400 nm, the inner diameter of 50-100 nm and the length of 10-100 [mu]m are formed. Compared with the prior art, the method has the advantages of being simple and feasible to implement, low in cost, convenient and fast, high in purity of the prepared sample, and can used for large scale production.

The invention relates to a fly dropping type single liquid droplet combustion system. The fly dropping type single liquid droplet combustion system comprises a liquid droplet conveying unit, a combustor unit, an air supply unit and a recording unit, wherein the liquid droplet conveying unit comprises a trace syringe, a syringe tube and a needle; the combustor unit comprises a base, an outer casing and a porous combustion disc; an outer retaining ring is arranged at the upper part of the porous combustion disc, and the outer retaining ring and the porous combustion disc form a high temperature area for combusting the single liquid droplet; the air supply unit comprises air blowing equipment and a fuel air cylinder; the recording unit adopts high-speed camera equipment which is connected with a computer, and is used for shooting the combustion state of the single liquid droplet in the high-temperature area. Compared with the prior art, the fly dropping type single liquid droplet combustion system has the advantages that by controlling the flow rate of fuel gas, the 700K-1500K wide high temperature range can be produced, and the single liquid droplet can be quickly evaporated and combusted; the single liquid droplet is produced by pressing a piston cylinder of the syringe, and is positioned at the tail end of the needle of the syringe, and the liquid droplet freely drops down under the gravity action, and enters the high-temperature area to evaporate and combust; the fly dropping type single liquid droplet combustion system is suitable for various types of viscous liquid.

An improved injector needle apparatus is described with inherent properties for increasing linear flow rates when inserted into a subcutaneous port during tissue expansion thus decreasing procedure time.

The invention relates to a preparation method of an optical composite nano-fiber material. The method comprises the steps of 1) preparing a nano gold-multi-wall carbon nano tube compound Au-MCNT; 2) preparing a spinning solution; 3) preparing the optical composite nano-fiber material in an electrostatic spinning way. In the electrostatic spinning, the prepared uniform and transparent precursor electrostatic spinning solution is arranged in an injector, a positive electrode of a high-voltage electrostatic generator is connected with a needle, a negative electrode is connected onto a clean bare electrode, the liquid is supplied by adopting a trace injection pump and directly applied to the injector needle through the high-voltage electrostatic power generated by the high-voltage electrostatic generator, and the optical composite nano-fiber is collected onto the bare electrode. The nano gold-multi-wall carbon nano tube compound with good conductivity and large specific surface area and capable of stably and firmly loading a great amount of trisruthenium Ru(bpy)3<2+> is doped with the spinnable macromolecular nylon 6 with good stability to obtain the precursor electrostatic spinning solution, and the optical composite nano fiber is obtained through the one-step electrostatic spinning method.

The invention relates to a separation, collection and treatment device for used medical syringes. The device comprises a base, a collecting box, a collecting plate, a trapezoidal baffle, a first rotating roller, a rotating shaft, a rotating mechanism, a groove, an L-shaped plate, a conveying mechanism, a syringe needle separating mechanism and a core rod separating mechanism. The separation, collection and treatment device can solve the following problems existing in the treatment process of the used medical syringes in the prior art, the syringes are collected through the collecting box, and when the syringes fall down, syringe needles are adsorbed through power on and power off of an electromagnet, so that the syringes are uniform in direction, tidy and ordered; the syringes are conveyed through a conveying mechanism, so that the working efficiency of separating the syringes is improved; and the syringe needles and syringe cylinders are separated through the syringe needle separating mechanism and the core rod separating mechanism, the syringes are moved in order through a rotating mechanism, deviation of the syringe needles and core rods is avoided, the separating efficiency of the syringe needle separating mechanism and the core rod separating mechanism is improved, and the syringe collecting and processing efficiency is improved.

The invention relates to an electrostatic spinning melt blowing composite non-woven material for filtering blood and a preparation method of the electrostatic spinning melt blowing composite non-woven material. The electrostatic spinning melt blowing composite non-woven material comprises a melt blowing receiving material and an electrostatic spinning material located on a surface layer; the melt blowing receiving material is made by polyester chips via melt blowing process; and fibers sink down on a receiving plate wrapped by melt blowing materials after being stretched by effects of electric field force so that the electrostatic spinning material is manufactured. The preparation method includes steps: (1) mixing trifluoroacetic acid with dichloromethane, adding the polyester chips into the mixture, and obtaining spinning liquid after dissolving; (2) applying high-voltage positive current on a needle of a syringe, leading a receiving device wrapped with the melt blowing materials to be grounded, carrying out electrostatic spinning by the aid of the spinning liquid obtained from the step (1), and obtaining composite non-woven fabrics; and (3) drying the composite non-woven fabrics in a vacuum manner. The porosity and the specific surface area of the composite non-woven material are high, and removal efficiency of white blood cells in the blood is improved. The preparation method is simple, and is simple and convenient in operation, low in cost and not high in requirements to equipment.

The invention discloses an injector needle back-stitching detection method and device, and aims to provide an injector needle back-stitching detection method and device which are fast in detection speed and high in accuracy rate. In the technical scheme, a reflective quantity of a needle top is used to judge whether a back-stitching situation exists. When a tool clamp strip equipped with the injector needle is transferred to a detection station by a conveyor belt, a light emitter emits light to the detection station, and a light receiver detects light intensity of received light and transmits the light intensity to a control module; the control module detects the light intensity and compares the light intensity with a threshold; if the light intensity is more than the threshold, the needle at the current detection station is judged to be back-stitching; if the light intensity is smaller than the threshold, the needle is judged to be normal; and then a light-emitting diode is used for displaying and a needle unloading mechanism is used to unload a back-stitching needle. In the invention, the injector needle can be detected quickly, efficiently and accurately; the low cost and highly practical performance are realized; the product factory qualified rate can be effectively guaranteed; and the method and device of the invention can be applicable to all the injector needle manufacturers.

The invention relates to a rare-earth ion doped gadolinium gallium garnet porous nano-belt and a preparation method thereof, belonging to the technical field of nanometer material preparation. The method comprises three steps: (1) spinning solution preparation, in which, mass percentage of nitrate is between 6 and 10 percent, mass percentage of PVP is between 26 and 30 percent, and the balance is solvent DMF; (2) PVP/[Gd(NO3)3+Ga(NO3)3+RE(NO3)3] composite nano-belt preparation, in which, static spinning technology is adopted, and the technical parameters are that voltage is between 15 and 18 kV, and the solidification distance is between 10 and 15cm; the inner diameter of a needle nozzle of a syringe is 1.2mm, a vertical spraying mode is adopted, the indoor temperature is between 20 and 30 DEG C, and relative humidity is between 40 and 50 percent; and (3) GGG preparation, wherein heat treatment is performed on the obtained PVP/[Gd(NO3)3+Ga(NO3)3+RE(NO3)3] composite nano-belt by RE3+porous nano-belt to obtain GGG: RE3+porous nano-belt.

Belonging to the technical field of materials, the invention relates to a high porosity porous ceramic microsphere and a preparation method thereof. The preparation method includes: mixing ceramic powder, a pore-forming agent and oleic acid in proportion, then conducting ball milling, then mixing the mixture with paraffin in proportion, then heating and stirring the substances evenly at 80-120DEGC to obtain a wax slurry, then heating the wax slurry to 120-155DEG C, dripping the wax slurry into a low temperature liquid medium with a syringe needle dropwise for solidifying into a microsphere, conducting high temperature dewaxing treatment on the solidified microsphere for 30-120min by burying sintering process, and finally calcining the biscuit firing ceramic microsphere under a high temperature condition to obtain the porous ceramic microsphere. The method provided by the invention has the advantages of simple process, low cost and good reproducibility, and the prepared inorganic porous ceramic microsphere has high porosity. Also, the method provided by the invention can avoid deterioration of water sensitive powder during microsphere formation, and is especially suitable for preparation of water sensitive inorganic ceramic microspheres.

The invention discloses an automatic separating and collecting device for syringe needles and needle cylinders of medical syringes. The automatic separating and collecting device comprises a body, wherein a linkage chamber is arranged in the body, a syringe inlet communicating with the linkage chamber is formed in the right side of the upper end face of the body, and a syringe adjusting and transferring mechanism is arranged in the body and comprises transmission adjustment plates, which are fixedly connected to internal walls of the front and back sides of the linkage chamber in back-and-forth symmetry and are located at the lower side of the syringe inlet. According to the automatic separating and collecting device, power is provided through a motor, the syringes put into the device aresubjected to position adjustment through cooperation with the transmission adjustment plates, the syringe needles of the syringes can face downwards before treatment, the syringes are conveyed to a syringe needle treatment position under the action of a conveying rotation block, a syringe needle clamp cam clamps and detaches the syringe needles under the driving of the motor, and thus, the effectof separating and collecting the syringe needles and the needle cylinders is achieved.

To enable a user to readily determine the gauge of the needle of a needle assembly that has a base and a needle protective housing pivotably attached thereto, the needle assembly is injection molded from a color coded molding material which color was preassigned to correspond to the gauge of the needle. As a result, both the base and the protective housing of the needle assembly have—the same specific color, and reflect or provide an indication of the given gauge of the needle. The needle sheath that covers the needle prior to use may be made of a plastics material that may be clear, or have the same or a different color than that of the needle assembly. The gauge of the needle of a fixed needle syringe could also be ascertained by its color coded needle protective housing. Color coded markings that correspond to the gauge of the needle may also be printed onto the syringe barrel of the fixed needle syringe.

The invention relates to a hot pepper pollinator, and belongs to the technical field of plant biology. The pollinator is designed based on the characteristics that hot pepper anther is small, sealed and closed. The pollinator consists of a handle and a pollinating pipe. The making materials are an injector needle head and a pipet suction head; the rear part of the needle head is sleeved at one end of a big head at the top of the pipet suction head; the part of the pipet suction head is used as the handle; and the point part of the needle is used as the pollinating pipe. The pollinator has the advantages that pollen is easy to collect, the pollen storing capacity is high, the pollination area is large and the pollination effect is good.

The invention relates to a fixing device for an injector, which comprises a clamping groove of an injector, a connecting post, a top headstock, a return spring and a knob, wherein the clamping groove of the injector is fixedly connected to the connecting post in series, the top headstock is in sleeve joint on the connecting post, the front end of the top headstock is provided with a through hole, and the injector is in clamping connection in the clamping groove of the injector, so that a needle head of the injector is at a state of correspondingly penetrating through the through hole. The return spring is supported between the top headstock and the clamping groove of the injector, and the knob is in screw connection on the back end of the top headstock and is at a state of adjustable distance with the clamping groove of the injector. According to the device, the structure is simple, the use is convenient, the injection depth can be accurately controlled, and the requirement of injection at various depth is met. The use is safe.

The invention relates to image registration, in particular to an in-vitro locator beacon and a location registration method using the locator beacon. The in-vitro locator beacon comprises a locator beacon body, wherein a cavity for accommodating liquid is formed inside the locator beacon body; the outer wall of the locator beacon body can be punctured by an injector pinhead; the wall thicknesses of all parts of the locator beacon body are equal. The location registration method achieves beacon overlapping location registration through the in-vitro locator beacon. The in-vitro locator beacon has the benefits of precise location registration, high registration efficiency and high fusion quality of special SPECT (single photon emission-computed tomography) simulation PET (positron emission tomography) images and different machine CT (computed tomography) images for radiotherapy and the like, is mainly applied to tests and can also be applied to location of tumor positions.

The invention relates to a lead acid battery and especially relates to an automatic liquid injection and exhaust cooling system of a storage battery. The system comprises a storage battery and an electron liquid tank. An upper cover of the storage battery is provided with medical injectors without syringe needles. Push rod plug ends of the medical injectors are located in the tank of the storage battery. Push rod plug tail ends of the medical injectors are provided with floats. The floats float on the surface of an electrolyte. Syringe needle ends of the medical injectors are located outside the tank of the storage battery and are communicated with the interior of the electron liquid tank by liquid injection pipes. The upper cover of the storage battery is provided with exhaust pipes. Outer ends of the exhaust pipes are communicated with lower end openings of exhaust cooling pipes installed in the electron liquid tank by connection flexible pipes. Inner end openings of the exhaust pipes are located at an electrolyte level highest position. The system provided by the invention solves the problem that an amount of an electrolyte added artificially is controlled difficultly, and has effects of convenient, accurate and environmentally friendly electrolyte supplement. In storage battery charging, the evaporative electrolyte can be recycled so that electrolyte consumption is reduced.