169 results about "Syringes needles" patented technology

An elastomeric puncture site patch for adhering to skin and antiseptically covering the skin at an area where a sharp object such as a syringe needle or intravenous is to be inserted. The patch is comprised of an elastomeric transparent self-sealing membrane and a spacer having an aperture. The spacer has an adhesive film on the surface opposite the membrane for adhering the patch to the skin. When the patch is applied to an area of the skin, a chamber is formed between the skin and the membrane and bounded by the spacer. In use, the skin is antiseptically cleaned and the patch applied. The syringe needle or similar device punctures the membrane and the skin. At the end of the procedure the needle is withdrawn and any blood remaining on the outside of the needle or oozing from the wound is trapped in the chamber, thus preventing contamination of the area beyond the chamber. A method of manufacturing the puncture site patch is also provided.

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.

A blood collecting needle, which comprises: a needle tube having a human-body puncturing needle tube and a stopper-body puncturing needle tube, wherein the needle tube has an outer diameter having substantially the same dimension from a tip of the human-body puncturing needle tube to a tip of the stopper-body puncturing needle tube, the needle tube has an inner diameter having substantially the same dimension from the tip of the human-body puncturing needle tube to the tip of the stopper-body puncturing needle tube, and the blood collecting needle satisfies equation (1):0.35≦D1<0.70  (equation 1) wherein D1 represents the outer diameter (mm) of the needle tube.

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 an individual labeling method of carp, in particular to an individual labeling method that PIT label is injected in the carp body for labeling, belonging to the technical field of aquiculture, which comprises the following steps: firstly, the PIT label and an injector are immersed in disinfection solution for sterilization; then the carp is anaesthetized; the sterilized PIT label is arranged in the injector needle; the abdomen wall is pierced with the needle on the side near the abdomen edge and anus of carp, and then the needle is pushed in the abdomen cavity along the abdomen wall; when the length of needle in the abdomen cavity is 0.8 to 1.0cm, the injector syringe is gently pushed to push the PIT label in the abdomen cavity of carp, and then the needle is extracted out. The invention has the advantages of ability of improving the retention rate of label, less impairment to the carp body in labeling and less influence on carp cultivation.

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 provides a medical sodium alginate gel microsphere and a preparation method and application of the medical sodium alginate gel microsphere. The medical sodium alginate gel microsphere consists of a composite medicine carrier and a water-insoluble medicine; the medicine is coated with the composite medicine carrier; and the composite medicine carrier is an ion crosslinking agent-sodium alginate-divalent metal ion, wherein the ion crosslinking agent is 4-aminomethylbenzoic acid or tranexamic acid. The preparation method comprises the following steps of: (1) mixing ion crosslinking agent aqueous solution with divalent metal ion solution in the same volume to obtain composite solidifying liquid; (2) dispersing medicine powder or an agent into sodium alginate aqueous solution; uniformly mixing; dropwise adding the mixture into the composite solidifying liquid obtained in step (1) through a high-voltage static droplet generating device or a syringe needle, so that the mixture drops are solidified into spheres; and (3) dehydrating gel microspheres which are washed with the distilled water; and drying at normal temperature. The medical sodium alginate gel microsphere can be used for treating tuberculosis, endocrine disease and tumor, and also can be used for treating local acute hemorrhage and chronic errhysis.

A method for separating out nano-scale fiber threads from many fiber branches and controlling alignment and deposition of the fiber threads on a substrate, comprising: electrospinning at least synthetic polymer fiber streams from an electrically charged syringe needle; controlling the fiber using at least one electrically charged metallic disk rotating about an axis positioned below the needle; capturing the fiber using electrically grounded collector; extracting a single or plurality of fiber branch threads from the fiber streams, wherein the single or plurality of fiber branch threads is attracted to and intercepted by the collector shape, and depositing the single or plurality of fiber branch threads as substantially aligned fiber on the collector.

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.

An apparatus for the removal of needles of syringes is provided with two gripping devices adapted to withhold a syringe and the respective needle, respectively, and an actuating device for moving the two gripping devices with respect to each other with a roto-translating motion about and along a longitudinal axis of the syringe in order to unscrew the needle from the syringe itself.

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 an automatic leaching method for a soil column simulation test. The method relates to a device consisting of a water storage tank, a pumping pipe, a water shortage sensor, a peristaltic pump head, a peristaltic pump controller, an LCD (Liquid Crystal Display) and keys, a water injection pipe, a universal quick joint, an exhaust valve, an upper transparent cover, a spray seat cavity, a transparent protective casing, a syringe needle and a seal ring. The method can be used for well simulating the evenness of raindrop through a set device, has the advantages of good controllability and accurate adjustment, can perform rainfall spraying simulation quantitatively and regularly according to flow speed, flow rate and rainfall strength, and is suitable for spraying and water supplying in rainfall simulation of a laboratory soil column test. The method is convenient to draw materials, has the advantages of low cost, small manual error and high test accuracy, reduces workload of experimental staff, can be used for accurately simulating rainfall levels of different degrees, realizes automatically spraying on the soil column by stages and strengths, and has high control accuracy, wherein the flow rate can be adjusted in a range of between 0 and 1,000ML / M, and the accumulated rainfall capacity can be displayed in real time.

The invention relates to the technical field of medical experimental apparatus. Provided are cross-matching of blood, blood types A, B, O, and Rh D, and irregular antibody screening sample-adding machine. The screening sample-adding machine is provided with a distribution pipe with both ends sealed and characterized in that at least one injector is arranged side by side on the distribution pipe; needle parts of the injectors penetrating the distribution pipe are located at the lower end of the distribution pipe; radial through holes are arranged on the injectors inside the distribution pipe; a sample-adding pipe is arranged on the distribution pipe next to each injector; the sample-adding pipes are communicated with the injectors through the distribution pipe. The sample-adding machine solves the problems that sample-adding machines special for cross-matching of blood, blood types A, B, O, and Rh D, and irregular antibody screening experiments do not exist and it is complex, inefficient, and error-prone to operate with ordinary straw or dropper. cross-matching of blood, blood types A, B, O, and Rh D, and irregular antibody screening sample-adding machine are provided.

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.

A method of preparing toner, is provided by preparing a stabilizer dispersion solution using distilled water and a dispersing agent; forming droplets by discharging the toner composition including at least one polymerizable monomer, a colorant, wax, and an initiator into the stabilizer dispersion solution through a syringe needle; forming core particles by warming the droplets dispersed in the stabilizer dispersion solution; and forming shells by adding a polymerizable monomer, a cross-linking agent, and an initiator to the core particles. The diameter of particles of the toner can be efficiently adjusted by changing the manufacturing process of the polymerization toner. The distribution of the toner particle diameter is improved and thus no additional sorting process is required. Also, the transferring performance of the toner can be improved, and various colors can be realized by a simple process.

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 an injector needle head with a needle point in a bionic form, which is applied to the field of disposable intervention medical appliances in the processes of clinical infusion, puncture, sampling and the like. The injector needle head is characterized in that the needle point outer wall face (3) or the needle point inclined surface (4) of the injector needle head has a macroscopic or microscopic bionic structural form. A bionic structure comprises a strip-shaped structure, a pit-shaped structure and a corrugated structure. The bionic form is added to the needle point of the needle head to reduce the friction force on the needle point in injection and puncture processes, reduce the stimulation effect of the needle point on subcutaneous nerve endings in a puncture process and achieve the effect of relieving pain.

The invention relates to a method for preparing compound Chinese medicine microcapsules, which comprises the following steps: mixing and emulsifying solution of sodium alginate and extract solution of a compound Chinese medicine according to a certain ratio; connecting a positive pole of a high-pressure generator with a needle of an injector, and placing the negative pole of the high-pressure generator at the bottom of solution of calcium chloride; and dripping the emulsified solution into the solution of calcium chloride by a microfluidic injection pump at a constant speed, dispersing and standing for 20 to 40 minutes, washing, and drying to obtain the microcapsules with a particle size smaller than 1,000 mu m. In the method provided by the invention, the raw materials are widely available, the price is low, and the large-scale production is easy; and the capsule wall thickness, size, shape and loading capacity of the obtained microcapsules can be controlled.

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.