73 results about "Driver syringe" patented technology

An injector device comprising a body containing a syringe with a needle and plunger, a drive spring coupled with the syringe and operable, when released, to drive the syringe forward to inject the needle and subsequently to dispense a dosage from the syringe, a housing containing the body and drive spring, and a release apparatus coupled with the housing. The drive spring is initially locked in an unreleased position, and the body is slidable with respect to the housing and configured for sliding upward in the housing when the injector device is pressed down at an injection site to engage the release apparatus and release the drive spring for delivering a dosage.

A drug to be infused into a patient is contained in a syringe or vial having a displaceable plunger for ejecting the drug out through an injection port into an administration set. Motion of the plunger of the drug delivery syringe / vial is controlled by a driver syringe having a piston or plunger for ejecting either a compressible or an incompressible fluid through a flow resistance element. Motive power for the piston of the drive syringe is provided by a constant load spring. A suitable linkage is provided for coupling the piston of the drive syringe to the plunger of the drug delivery syringe. Several types of flow rate control elements for use with the driver syringe are disclosed.

The invention relates to an injection device for medical drug preparation. The injection device comprises a supporting base plate, an overall rotary motor, an injector feeding mechanism and a mandrel push-and-pull mechanism, wherein a feeding motor of the injector feeding mechanism drives a feeding screw to rotate through a coupler, so that a feeding nut drives a feeding sliding block to move up and down along the feeding screw to drive an injector outer sleeve to conduct translational movement in the axial direction of the injector outer sleeve; and a push-and-pull motor of the mandrel push-and-pull mechanism drives a push-and-pull screw to rotate through a coupler, so that a push-and-pull nut drives a push-and-pull sliding block to move up and down along the push-and-pull screw, a mandrel clip fixed on the push-and-pull sliding block drives an injector mandrel to move up and down relative to the injector outer sleeve, and injector push-and-pull actions are finished. The injection device is compact and reasonable in structure, convenient to operate and capable of performing automatic operation on a disposable injector, realizing functions of liquid extraction, liquid injection, transposition, pipetting and the like required in a drug preparation process, lowering the human intervention degree, reducing the labor intensity and avoiding drug waste and cross contamination.

An injector drive device includes a power supply unit that is supplied with power from a battery mounted in a vehicle and generates a voltage higher than the voltage of the battery, and EDU having a drive unit that is supplied with power from the power supply unit and drives an injector. The drive unit is housed in a housing. The power supply unit is placed externally to the EDU, that is, externally to the housing, so that the housing need not be made large against heat generation of the power supply unit.

Automated isothermal titration micro calorimetry (ITC) system comprising a micro calorimeter with a sample cell and a reference cell, the sample cell is accessible via a sample cell stem and the reference cell is accessible via a reference cell stem. The system further comprises an automatic pipette assembly comprising a syringe with a titration needle arranged to be inserted into the sample cell for supplying titrant, the pipette assembly comprises an activator for driving a plunger in the syringe, a pipette translation unit supporting the pipette assembly and being arranged to place pipette in position for titration, washing and filling operations, a wash station for the titrant needle, and a cell preparation unit arranged to perform operations for replacing the sample liquid in the sample cell when the pipette is placed in another position than the position for titration.

The invention relates to an automatic medicine dispensing device based on macro / micro driving and precise liquid medicine control and belongs to the field of medical equipment. The automatic medicine dispensing device is characterized in that a macro / micro driving injector movement unit and a grating scale linear displacement sensor form closed loop feedback control, the position of an injector inserted into a medicine bag and the position of the injector inserted into a penicillin bottle are precisely controlled, and a servo motor is decelerated by a worm and gear to drive a rotary block to realize a 90-degree turning action of the injector; a penicillin bottle manipulator-grabbing and moving unit adopts macro / micro combined dual driving to control a lead screw to move, so that the penicillin bottle is accurately grabbed from a conveying belt tray to a spring cup in a designated position, and a disinfection nozzle is configured for disinfecting a penicillin bottle opening; a penicillin bottle oscillation unit is driven by a motor to perform oscillation at specific amplitude and specific frequency after a medicine is injected into the penicillin bottle, and the medicine is enabled to be dissolved sufficiently. The automatic medicine dispensing device realizes rapid and precise medicine dispensing, sufficiently utilizes the medicine, avoids waste, can relieve pressure of a nurse, reduces medicine dispensing errors and has great realistic significance and practical value.

The invention discloses a base structure of an injection pump. According to the base structure, a step motor is utilized to drive a screw rod to rotate, a holding bracket with screw nuts is driven by the screw rod to move linearly, then a push injection head connected with the holding bracket is driven to move linearly and an injector is driven to work; the displacement of the holding bracket is continuously detected from relative sliding distance between a brush and a linear displacement sensor board coating, and the injection working and alarming of the injector are controlled in real time according to the displacement, thereby ensuring that the micro-injection of the injection pump is precisely accomplished. The base structure solves the problems that a drive part of a conventional injection pump is complicated in structure and poor in reliability, as well as the near-empty and empty alarming detection structures cannot be continuously sampled, ensures that the injection pump can accomplish the micro-injection work, and has the advantages that the structure is simple, the performance is reliable, the mounting and maintaining are convenient, and the displacement of the holding bracket and the push injection head can be continuously detected, the drive is accurate and stable.

In an assembly for actuating a syringe, two gripping devices are designed to receive and withhold a containment cylinder and, respectively, a piston of the syringe, and are defined by respective pairs of jaws for gripping a flange of the containment cylinder and, respectively, of an end head of the piston, the jaws of at least one gripping device being mobile with respect to one another between a gripping position and a release position under the thrust of a corresponding actuation device.

A drug to be infused into a patient is contained in a syringe or vial having a displaceable plunger for ejecting the drug out through an injection port into an administration set. Motion of the plunger of the drug delivery syringe / vial is controlled by a driver syringe having a piston or plunger for ejecting either a compressible or an incompressible fluid through a flow resistance element. Motive power for the piston of the drive syringe is provided by a constant load spring. A suitable linkage is provided for coupling the piston of the drive syringe to the plunger of the drug delivery syringe. Several types of flow rate control elements for use with the driver syringe are disclosed.

A delay mechanism for an automatic injection device having a housing and a medication filled syringe. The delay mechanism includes a shuttle, a follower, a damping compound, at least one biasing member, and a biased plunger element. When moved in the device housing from a first location to a second location, the biased plunger element is adapted to drive the syringe piston within syringe barrel to force medication through the syringe needle for an injection. The follower, when the plunger element is so moved, is freed to move, under urging of the at least one biasing member, from a first position on the housing toward a second position to thereby move the shuttle for retracting the syringe needle into the housing after injection. The damping compound dampens or slows rotation of the follower as the follower moves from the first position toward the second position.

A delay mechanism for an automatic injection device having a housing and a medication filled syringe. The delay mechanism includes a shuttle, a follower, a damping compound, at least one biasing member, and a biased plunger element. When moved in the device housing from a first location to a second location, the biased plunger element is adapted to drive the syringe piston within syringe barrel to force medication through the syringe needle for an injection. The follower, when the plunger element is so moved, is freed to move, under urging of the at least one biasing member, from a first position on the housing toward a second position to thereby move the shuttle for retracting the syringe needle into the housing after injection. The damping compound dampens or slows rotation of the follower as the follower moves from the first position toward the second position.

A vial has a body defining a chamber for receiving a substance therein; and a valve assembly coupled in fluid communication with the chamber and defining (i) an open position permitting at least one of (a) passage of the substance through the valve assembly and into the chamber for storing the substance in the chamber, and (b) passage of the substance out of the chamber for dispensing the substance therefrom; and (ii) a closed position forming a fluid-tight seal between the chamber and exterior of the container. A filling member engages a flexible valve member of the valve assembly to move the valve member between the closed and open positions to fill and seal the vial, respectively. A syringe is connectable to the vial. The valve assembly opens upon connecting the syringe to the vial to allow the substance within the vial to be withdrawn from the vial and into the syringe by actuating a plunger of the syringe, and the valve assembly closes upon disconnecting the vial and syringe to hermetically seal and store the substance remaining in the syringe for later use.

The invention discloses an injection pump and a control method thereof. The injection pump comprises a mounting position of an injector, a push and pull mechanism for driving the injector, and an injector identifying device for effectively identifying the injector.

The invention discloses an automatic test mechanical arm device based on vision calibration. The automatic test mechanical arm device based on vision calibration comprises a control system, a mechanical arm main body, an end executer, a gas pump and a test tube rack, wherein the mechanical arm main body comprises a first servo motor fixed to a support platform, a second servo motor adjacent to thefirst servo motor, a large arm connected with the second servo motor, a third servo motor connected with the large arm, and a small arm connected with the third servo motor; the mechanical arm main body is connected with the end executer through an L-shaped workpiece; the end executer comprises an injector and a camera; and the axis of the camera is vertical to the upper plane of the test tube rack. The gas pump is located behind the mechanical arm main body, and the injector is connected with the gas pump through a hose; and the gas pump is used for driving the injector to suck or drain a liquid. The automatic test mechanical arm device based on vision calibration is capable of realizing automatic test, and is high in interference resistance, repeatability and efficiency.

A precision syringe pump employing a syringe comprises a motor, a lead screw and a syringe driving head connected to the lead screw. The syringe comprises a cylinder and a plunger. The motor drives the lead screw to rotate clockwise or counterclockwise to drive the syringe driving head and push the plunger to move within the cylinder. The syringe pump further comprises: a magnetoresistive sensor, at least one permanent magnet and an MCU, the at least one permanent magnet being located on the lead screw and rotating therewith; the magnetoresistive sensor can sense the magnetic field generated by the at least one permanent magnet; the input end of the MCU is connected to the magnetoresistive sensor, and the output end of the MCU is connected to the motor; the MCU receives signals from the magnetoresistive sensor and controls, according to the signal feedback, the direction and velocity of the lead screw rotated by the motor. The precision syringe pump of the present invention is characterized by high sensitivity, high reliability, low power consumption and low cost, and is convenient to use.

The invention relates to a model device for dynamic detection of root canal flushing effect and a detection method thereof. The invention is characterized in that the device is successively integrated as a whole by a transparent tooth model (1), a microscope (2), an electro-ocular (3), a notebook computer (4), a universal mechanics tester (5), an injector (6), a root canal flushing needle (7), a transparent tooth and injector fixing device (8) and a base station fixing device (9) through connectors. The detection method comprises the following steps: infusing a tracer with colors in the transparent tooth model (1) after connection of the model device for dynamic detection of root canal flushing effect is finished, while filling flushing liquid in the injector (6), driving the injector (6) by the universal mechanics tester (5) and flushing the tracer in the transparent tooth model (1) through the root canal flushing needle (7), and carrying out micro dynamic shooting with the microscope (2) and the electro-ocular (3) and storing in the notebook computer (4) to facilitate analysis of the root canal flushing dynamic effect and influence factors thereof. The method is to provide a scientific study method and clinical therapy basis for flushing the root canal.

The invention relates to the field of biotechnology equipment, and provides a full-automatic nucleic acid extraction system. The full-automatic nucleic acid extraction system comprises a mounting seat, a syringe assembly, an extraction platform assembly, a magnetic separating assembly, a reagent kit and a driving assembly, wherein the syringe assembly and the extraction platform assembly are in sliding connection with the mounting seat; the syringe assembly is located above the extracting platform assembly; the reagent kit is loaded on the extraction platform assembly; the driving assembly isused for driving the extraction platform assembly to move back and forth and complete the motion of operation positioning; the magnetic separating assembly is mounted on the extraction platform assembly and moves along with the extraction platform assembly; the driving assembly is used for driving the syringe assembly to move up and down and complete the motions of puncturing an encapsulating film, taking / removing a pipetting head or sucking / discharging liquid; and the driving assembly is used for driving the magnetic separating assembly to move up and down and complete the motion of separating magnetic beads. The full-automatic nucleic acid extraction system disclosed by the invention is accurate in liquid sucking and discharging control and short in experiment flow time, and can sufficiently guarantee the validity of the experiment result.

Automated isothermal titration micro calorimetry (ITC) system comprising a micro calorimeter with a sample cell and a reference cell, the sample cell is accessible via a sample cell stem and the reference cell is accessible via a reference cell stem. The system further comprises an automatic pipette assembly comprising a syringe with a titration needle arranged to be inserted into the sample cell for supplying titrant, the pipette assembly comprises an activator for driving a plunger in the syringe, a pipette translation unit supporting the pipette assembly and being arranged to place pipette in position for titration, washing and filling operations, a wash station for the titrant needle, and a cell preparation unit arranged to perform operations for replacing the sample liquid in the sample cell when the pipette is placed in another position than the position for titration.

The invention relates to a remote control injection device with a camera, which comprises a drive block driving a pushing handle of an injector, a screw rod driving the driving block, a stepper motor driving the screw rod, a stepper motor drive module driving the stepper motor, a singlechip driving the stepper motor drive module, a battery of 3.6 V, a battery of 5 V, a support, a minitype wireless camera, and a Bluetooth receiving module, wherein the camera is connected with the battery of 5V, and is used for camera shooting and sending a video signal; the Bluetooth receiving module is connected with the singlechip and the battery of 3.6 V, and is used for receiving, processing a remote signal and transmitting the remote signal to the singlechip; and the camera is in wireless connection with a PC provided with a receiver. According to the invention, operators can remotely control the contrast agent pushing and injection through the PC in a shielding room, and can observe the working state of the remote control injection device through the PC synchronously, so that the safety risk for remotely controlling the X ray contrast agent pushing and injection can be reduced, and the radiography quality and working efficiency are improved.

The invention discloses a primary explosive crystallization system based on segmented flow. The system comprises a computer control unit, a fluid driving unit, a micromixer, a synthesis and crystallization unit, a micro-observing system and a connecting assembly. Continuous phase loading liquid in an injector is driven by a computer control passage injecting pump to flow to a T-shaped connector through a flexible tube, the injecting pump is controlled to drive reflection liquid and an additive or an impurity solution in the injector to be collected and flow to the micromixer through a flexibletube, after thorough mixing, the mixture flows to the T-shaped connector to form liquid drops in uniform shapes, and the liquid drops flow to the synthesis and crystallization device with flowing ofthe fluid; the micro-observing system comprises a microscope and a connecting line connected with the computer control unit, the microscope is controlled by a computer to shoot the growing conditionsof crystal at different positions, the growing conditions of the crystal can be conveniently studied, and the crystal quality can be conveniently adjusted.

The invention discloses a medical device for an intensive care unit (ICU). The medical device comprises a square housing, a fixing device, a safety device and a driving device, the fixing device is arranged on one side of the front portion of the square housing, the safety device and the driving device are installed in the square housing, a guiding groove is formed in the other side of the front portion of the square housing, and an inserting groove is formed in the part, located between the fixing device and the guiding groove, of the front portion of the square housing; the fixing device comprises two U-shaped protruding blocks which are fixedly installed on the front portion of the square housing and a clamping member which is rotatably installed on the front portion of the square housing. The medical device has the advantages that the medical device is safe and reliable, the service life is long, the operation of fixing a syringe is more convenient and efficient and faster, the interruption of medicinal liquid injection using the syringe can be prevented, the potential safety hazards on the life of a patient are eliminated, the syringe can be smoothly driven to inject medicinalliquid into the patient, and the life of the patient can be effectively ensured.

The present invention provides a syringe cartridge that is sufficiently robust to be used in autoinjectors that generate injection forces sufficient to deliver viscous medicaments. The syringe cartridge of the present invention includes a syringe, a bias mechanism, and a casing. The casing of the syringe cartridge of the present invention includes a collapsible portion and a fixed portion. Advantageously, the collapsible portion of the casing collapses within the fixed portion of the casing as the syringe is driven through its stroke within the syringe cartridge. As the collapsible portion collapses within the fixed portion, the length of the syringe cartridge is effectively reduced, which, in turn, allows the use of a shorter plunger and thereby facilitates the construction of a more compact autoinjector.

The dispenser of the liquid crystal display panel is configured by including a syringe which is furnished with the nozzle at one end and is isolated from the substrate, a vertical driving motor which drives the syringe to a vertical direction, a contact type switch which detects contactability or not of the nozzle and the substrate by driving the motor, and a first sensor which detects the initial value to contact the nozzle and the substrate by the result of detection of the contact type switch.

The invention provides an injector nearly-empty already-empty detection mechanism. The mechanism comprises a motor for driving an injector, a driving device which is connected with the motor and transforms the rotation of the motor into linear motion, a push injection component which is connected with the driving device, the injector which is connected with the push injection component, a sensor for detecting the position of the push injection component and sending corresponding signals, a processor which is electrically connected with the sensor, receives the corresponding signals and sends corresponding commands, and an alarm which is electrically connected with the processor and receives the corresponding commands to alarm or not alarm. The motor is electrically connected with the processor and runs or stops running according to the corresponding commands. The invention also provides an injector nearly-empty already-empty detection method. The injector nearly-empty already-empty detection mechanism has a simple structure, and the detection method has high efficiency and is convenient to implement. The mechanism is favorable for prolonging the service life of an injection pump, improving the utilization rate of injection solution in the injector and reducing waste.

The invention discloses a reagent continuous quantitative injection device. The device comprises a power mechanism, at least one injection syringe and a support connection mechanism. The support connection mechanism comprises an upper fixing plate, a lower fixing plate and an adapter plate. The power mechanism comprises a motor and a power output shaft. The injection syringe comprises a syringe needle, a syringe cylinder, a piston rod and a piston fixed to the end of the piston rod. The upper fixing plate is fixed above a microfluidic chip by a support rod. The lower fixing plate is located below the upper fixing plate and is fixedly connected to the upper fixing plate by a connection rod. The device utilizes the power mechanism and the at least one injection syringe. The power mechanism is controlled by an upper computer and drives the injection syringe so that an injection process is finished. The device realizes continuous automatic injection. The power mechanism can synchronously drive one or more syringes so that injection efficiency is further improved.

The invention discloses a calibration apparatus for a chemical alarm. The calibration apparatus is mainly used for preparing accurate-concentration standard gas with a concentration of 10<-10> to 100 mg / m3 or dilution of 1 to 10<12> times from a liquid or gaseous standard chemical and testing the metering performances like response sensitivity of the chemical alarm so as to facilitate research on apparatus metering or analytical methods. The apparatus comprises a stepping motor (6-1) which drives injection of a liquid or bottled high-concentration gaseous standard chemical (9-2) in a syringe (16-1) into a gasifier (10), and the liquid or bottled high-concentration gaseous standard chemical (9-2) is evaporated or diluted by zero gas (9-1) so as to obtain primary-standard gas (9-5) with a concentration of 10<-3> to 100 mg / m3; to obtain a lower concentration, the primary-standard gas stored in a second syringe (16-2) is diluted in a mixer (14), and secondary-standard gas (9-5) with a concentration of 10<-10> to 100 mg / m3 is output; and standard gas is switched in virtue of a three-way solenoid valve (13) and enters the alarm or detector (9-4), alarming time (12) of sound or light emitted by the alarm is recorded, and response sensitivity of the alarm is calculated.

An automatic pipette assembly for an isothermal titration micro calorimetry system, comprising a pipette housing, a syringe with a titration needle arranged to be inserted into a sample cell for supplying titrant, and a linear activator for driving a plunger in the syringe, the titration needle is rotatable with respect to the housing and is provided with a stirring paddle arranged to stir fluid in the sample cell, wherein the automatic pipette assembly comprises a stirring motor for driving the rotation of the titration needle. There is also provided an isothermal titration micro calorimetry system.

The present invention uses an injection apparatus comprising: an injector which includes a mounting part on which a syringe is mounted, a needle assembly having a plurality of needles, a motor and a screw for actuating a piston of the syringe forward and backward; and a main body for controlling the forward and backward actuation of the piston of the syringe and drug injection. The present invention is configured as follows: a vacuum suction pressure is formed in the needle assembly that is in contact with the skin; injection is performed so that a drug is injected through a needle after it is determined that the needle is in close contact with the skin by comparing a sensed vacuum suction pressure value with a preset vacuum suction pressure value; and if injection is completed, the needle assembly is separated from the skin.