397 results about "Needle free" patented technology

Needleless connector disinfecting devices are provided that include a body having a top surface and a bottom surface, a cavity in the body, the cavity configured to receive a needleless connector, an activation arm disposed on the body, a cartridge housing disposed on the activation arm, a swab cartridge disposed in the cartridge housing, and a disposal chamber disposed in the body, the disposal chamber configured to receive used cleaning swabs. The activation arm is configured to slidably move the cartridge housing on the top surface of the body between a non-biased position in which a bottommost cleaning swab in the swab cartridge is in contact with an end portion of a needleless connector and a biased position in which the cartridge housing is disposed over the disposal chamber. Additional needleless connector disinfecting devices and methods of using needleless connector disinfecting devices are also provided.

The invention provides a needle-base-free multi-needle electrostatic spinning nozzle which comprises a liquid conveying base, a liquid storage base, a conductive assembly and multiple spinning needles, the distance between every two adjacent spinning needles is 1-3 mm, the inner diameter of each spinning needle is 0.1-0.3 mm, and the outer diameter of each spinning needle is 0.3-0.5 mm. Compared with the prior art, the multiple spinning needle heads are directly connected with the current-conducting plate, so that the distance between the adjacent needle heads is shortened to 1-3 mm, and short-distance ordered array nanofiber preparation is achieved; a plurality of second through holes are formed in the current-conducting plate, so that the array mode of the spinning needle heads on the current-conducting plate can be flexibly adjusted according to production requirements to meet the preparation requirements of different nanofiber arrays.

The utility model relates to the technical field of needleless injectors, in particular to a liquid pushing mechanism and an injector, the liquid pushing mechanism comprises a liquid storage assembly, the liquid storage assembly comprises a liquid storage tube and a liquid outlet hole arranged at the end part of the liquid storage tube; the pushing assembly comprises a piston rod arranged in the liquid storage pipe in a sliding mode and a push rod capable of moving relative to the piston rod; the push rod can drive the piston rod to move synchronously when the relative displacement reaches the tail end of the stroke. According to the liquid pushing mechanism and the injector, a relative displacement action exists between the piston rod and the push rod, when the push rod and the piston rod generate relative displacement, the moving speed of the push rod can be increased, when the push rod makes contact with the piston rod, the piston rod can be impacted, and when the piston rod is impacted, the liquid medicine spraying pressure can be increased, so that the epidermis can be punctured conveniently; the piston rod moves along with the push rod in the later period to slowly enter the human body.

The invention provides a method for composite manufacturing of a ribbed wallboard structure through friction stir solid phase additive and needleless friction stir, which comprises the following steps: firstly, manufacturing a reinforcing rib structure on a substrate layer by layer through a friction stir additive manufacturing process, and meanwhile, carrying out friction stir treatment on a deposition layer by using a needleless stirring head; therefore, the reinforcing rib generates plastic deformation at the recrystallization temperature, the reinforcing rib and the matrix structure are combined more tightly, meanwhile, the surface roughness of the reinforcing rib is further reduced through needle-free stirring, grains are refined, and the overall strength of the reinforcing rib is improved. And finally integrally forming the part through a shot blasting forming process. According to the method, the problems that a reinforcing rib structure made of dissimilar materials cannot be manufactured through a traditional method, and a ribbed integral wallboard is difficult to integrally form are solved, redundant machining is avoided, the forming cost of the ribbed wallboard structure is reduced, meanwhile, the bonding strength between the reinforcing rib and a base body is further improved through needle-free stirring, and the production efficiency is improved. And the performance of the wallboard structure can be better improved.

The utility model belongs to the technical field of Tibetan pig disease prevention and treatment, particularly relates to a vaccine injector for Tibetan pig disease prevention and treatment, and aims to solve the problems that when vaccine injection is carried out on Tibetan pigs in the same batch of growth stage, workers often hold injectors with hands to go to pigsties to inject the Tibetan pigs one by one, piglets missing vaccine injection are prone to occurring, and potential risks exist. According to the scheme, the device comprises an electric conveying belt, the electric conveying belt is arranged on a channel between two adjacent pigsties, and two guardrails for preventing piglets from falling off are symmetrically arranged above the electric conveying belt. When the piglet vaccine injection device is used, through the design of the electric conveying belt and the guardrails, a worker can conveniently inject vaccines to piglets one by one, and therefore the situation that the piglets are missed to be vaccinated is avoided; through the design of the adjusting assembly, the distance between the guardrails can be adjusted according to the body types of piglets of different growth batches; through the design of the needle-free injection assembly, stress reaction and cross infection risks caused by traditional needle puncture are avoided.

The invention relates to the technical field of medical instruments, in particular to an electromagnetic needleless injector which comprises a shell, a nozzle assembly, a liquid storage assembly, a driving assembly and an intelligent control system. Firstly, a series excitation linear motor is adopted to replace a traditional needleless injector driven by a spring, and the problems that driving force is limited and elasticity is attenuated due to the spring are effectively solved. According to the series excitation linear motor, through excitation magnetic field coupling between the stator coil and the rotor coil in the motor, the rotor directly drives the plunger rod to do linear motion in the axial direction so as to complete injection, the structure is simpler, the direct drive type connection structure is adopted, the stability is higher, and force transmission is more accurate. In addition, an intelligent control system integrated in the needleless injector enables the needleless injector to be more intelligent, control precision is higher, operation is more convenient, the needleless injector can be wirelessly connected with a breeding cloud management system, rapid, accurate and painless injection of live pigs and other animals can be achieved, and breeding efficiency and injection safety are improved.

The present invention relates to a needleless syringe comprising a body part and a nozzle part, wherein the body unit provides a pulse-type pressure of a predetermined magnitude to a drug accommodated in a drug accommodation unit in the nozzle unit, and the nozzle unit discharges, in the form of a microjet through a nozzle hole of the nozzle unit, the drug accommodated in the drug accommodation unit in response to the pulse-type pressure provided by the body unit. A nozzle unit-side connection unit in the nozzle unit, which is mounted on a connection unit of the body unit, includes an information unit configured to store, as tag information, information on equipment parameters for the operation of the needleless syringe. The body unit is provided with: a sensor capable of recognizing the information unit provided in the nozzle unit; and a control unit that automatically sets the equipment parameters for controlling the operation of the needleless syringe, on the basis of the tag information recognized by the sensor.

The utility model provides a needleless injector which comprises a shell, an injection driving mechanism, a liquid inlet device, a liquid storage device and a spray head, the injection driving mechanism is connected to the liquid storage device and used for sucking a reagent into the liquid storage device through the liquid inlet device and spraying the reagent in the liquid storage device out through the spray head; the nozzle comprises a nozzle body, a nozzle one-way valve and a nozzle, and the nozzle is detachably connected to the nozzle body; wherein the nozzle body is provided with a containing cavity and a reagent inlet which are communicated, and the nozzle one-way valve is arranged in the containing cavity; the sprayer one-way valve comprises a one-way valve element and an elastic piece, the one-way valve element is of a cavity structure, the elastic piece is arranged in the cavity structure, a reagent outlet is formed in the side wall of the one-way valve element, and the reagent outlet is communicated with the cavity structure; the nozzle is provided with at least one jet hole, and the cavity structure is communicated with the jet hole. The needleless injector effectively solves the problems that a needleless injector is single in application scene, short in service life, low in injection frequency and the like.

Systems, methods, and computer program products are provided for detecting connection of a medical device to a needleless connector. An example system includes an image capture device and at least one processor. The image capture device may be configured to capture a set of images of a movable component of a needleless connector. The at least one processor may be configured to receive the set of images of the movable component of the needleless connector; and process the set of images of the movable component of the needleless connector to determine whether a medical device is connected to the needleless connector.

A valve member for a connector includes a head portion, a body portion, and a circumferential lip seal extending radially outward from an outer surface of the head portion. The head portion includes a top section defining a first seal portion. The body portion extends longitudinally from the head portion and defines a second seal portion at a proximal end thereof. The second seal portion is disposed distally to the first seal portion. The circumferential lip seal is disposed between the first and second seal portions.

The present invention provides an auxiliary device or system for a needleless syringe that uses the force of an elastic body to eject the injectable solution from the ampoule, and that can automatically perform the charging of the elastic body and the loading of the ampoule. [Solution] The auxiliary device 1 or system for the needleless syringe includes a holding unit 3 for holding the needleless syringe 10, an elastic body energy storage unit 5 for storing energy in the elastic body of the needleless syringe, an ampoule loading unit 6 for loading a pre-filled ampoule into the needleless syringe, a drive unit 7 for relatively moving the holding unit, and a control unit 8 for controlling the operation of the drive unit, and sequentially moves the needleless syringe to a position where the elastic body can be stored and to a position where the pre-filled ampoule can be loaded.

The utility model discloses an electric needleless injector for livestock. The electric needleless injector comprises a shell, a battery, a nozzle assembly, a liquid inlet pipe assembly, a liquid storage cavity, an adapter block, a motor, a rotating worm, a worm position measuring plate, a compression spring, a spring connecting rod, a piston fixing rod, a transmission bearing, a spring pressing plate, a buffering rubber mat, a liquid medicine push rod and a Hall sensor. The utility model provides three more optimized functional structures: (1) the trigger device is simpler and more practical: the trigger device can be triggered by only pressing the head, the trigger device can be pressed on an animal body when in use, and liquid flying caused by the fact that the trigger device is not attached to the epidermis can be prevented; (2) the liquid medicine, the medicine bottle and the like are more convenient to replace: the Luer taper of the medicine bag is directly sleeved during use, or the medicine tube is directly sleeved on the Luer taper when the self-made medicine bottle and the medicine cylinder are used; and (3) the power structure is more stable and simpler: the motor drives the worm to rotate and then drives the straight connecting rod to operate.

1. The name of the design product: syringe auxiliary propulsion gun. 2. The use of the design product: needle-free syringe for drug injection. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view. 5. The bottom of the design product is the part that is not easy to see or cannot be seen during use, and the top view is omitted.

The present invention provides a needleless connector comprising: a housing having an upper portion comprising an inlet port, a lower portion comprising an opening, and an inner surface forming an interior cavity extending from the inlet port to the opening, the upper portion having a first section of opposing walls inclined radially inwardly; and a compressible valve having a head portion and a compressible body portion extending distally from the head portion, the compressible valve located within the interior cavity and compressible between a closed state in which the compressible body portion is closed and an open state in which the compressible body portion extends distally from the head portion. In an open state, a top section of the head portion engages against the inner surface to impede flow of fluid between the inlet port and the interior cavity, and in an open state, the top section of the head portion engages against a first segment of opposing wall that is radially inwardly inclined, the top section of the head portion is biased and a fluid flow path is formed between the top section of the head portion and the inner surface.

This invention discloses a method for calculating needle-free injection depth based on energy analysis, comprising the following steps: Step 1, obtaining the jet process parameters during a single needle-free injection, and calculating the initial peak jet power and the total jet energy of this injection; Step 2, calculating the initial injection depth based on the initial peak jet power using a preset initial depth linear model; Step 3, calculating the diffusion depth increment based on the total jet energy using a preset diffusion depth linear model; Step 4, calculating the predicted maximum injection depth based on the sum of the initial injection depth and the diffusion depth increment. This invention decomposes the injection process into two stages: initial impact and subsequent diffusion, and establishes linear prediction models for each stage based on the jet energy parameters, thereby achieving reliable and accurate calculation and prediction of the injection depth for large-volume needle-free injections.

The invention relates to a firing device for a needleless injector and a needleless injection system. The needleless injector includes an injection chamber housing and a piston assembly. The launch device includes a support housing, a power push rod, and a dose adjustment device. The support housing is configured to be connectable to the injection chamber housing. The power push rod is configured to be connectable to the piston assembly and movable relative to the support housing. The dose adjusting device comprises a dose adjusting disc and a dose adjusting column, the dose adjusting disc is rotatably connected to the supporting shell, a plurality of dose grooves are formed in the dose adjusting disc, the depths of the dose grooves are different from one another, and the dose adjusting column is arranged on the power push rod and can move along with the power push rod. The dose adjusting column can change the movement stroke of the power push rod by being matched with different dose grooves. According to the needleless injection system of the scheme, a user can conveniently achieve injection of a preset dose.

The utility model provides a disposable needleless injection needle which comprises a pressure source instrument connecting part, a liquid medicine injection part, a liquid medicine storage part and a liquid medicine injection part, and a screw sequentially penetrates through a screw hole of the liquid medicine injection part and a screw hole of the liquid medicine storage part and finally enters a threaded hole of the pressure source instrument connecting part to achieve overall fixation. The side wall of the liquid medicine injection part and the side wall of the liquid medicine storage part are fixed through screws, the pressure source instrument connecting part is connected with an external micro-jet injector to obtain a pressure source, and the liquid medicine injection part is connected with an external injection tube to obtain liquid medicine. And the continuous broken injection of the liquid medicine is realized. The utility model has the beneficial effects that a trace amount of medicine can be quickly and accurately injected into the skin surface layer, so that pain and recovery time are reduced; under the condition that the needle head is not replaced, liquid medicine can be added at any time, and convenience and rapidness are achieved.

The utility model relates to a needleless injector device capable of preventing injection shaking and conducting injection in batches, which belongs to the field of needleless injectors and comprises a reset motor, a reset screw rod, a reset block, a sliding block, a trigger, a sliding block positioning groove, a driving hammer, a driving hammer spring, an injection motor, an injection screw rod, a machine frame and a sliding sleeve. The reset screw is in threaded fit with a reset block, one face of the output end of the reset motor is installed on one side of the rack, the sliding block is located in the rack, the sliding block positioning groove is formed in the end of one side of the sliding block, the trigger is installed on the rack, the sliding sleeve is installed in the rack, the driving hammer is installed in the rack, and the head of the driving hammer is installed in the sliding sleeve in a sliding mode. The driving hammer spring is installed at the tail of the driving hammer, the injection motor is fixed in the rack, the output end of the injection motor is connected with the injection screw rod, and by arranging the pushing motor and the injection screw rod, the problems that multiple times of injection cannot be achieved, and medicine leakage or injection position deviation is caused by shaking during injection are solved.

A needleless connector can include a housing having an inlet port, an outlet port, and an inner surface defining an internal cavity extending between the inlet port and the outlet port, and a compressible valve reciprocally disposed in the internal cavity. In a closed state, a top section of a head portion of the compressible valve can have a planar shape configured to contact and seal against the inner surface of the housing. In an open state of the compressible valve subject to an axial force, the top section of the head portion can be trapped between two pinch points between opposing walls of an inwardly sloped portion of the inner surface. Further, in the open state, the top section of the head portion can have a non-planar shape defining a fluid path extending at least partially between opposing walls on an outwardly sloped portion of the inner surface.

The invention discloses an indwelling needle heparin lock with an anti-backflow function, and belongs to the technical field of medical puncture tools. Comprising a main pipeline, a branch pipeline is integrally formed on the right side of the main pipeline, a main pipe cap is fixedly connected to the upper portion of the outer side wall of the main pipeline, a branch pipe cap sleeves the upper portion of the outer side wall of the branch pipeline, an extension pipe is fixedly connected to the lower surface of the main pipeline, and the interior of the extension pipe communicates with the interior of the main pipeline; the main pipeline and the branch pipeline are integrally formed, the medical duckbilled valve is arranged in the main pipeline, the stable one-way conduction effect can be achieved, liquid can smoothly pass through during infusion, the valve port is automatically closed when infusion is stopped or a blood backflow trend exists, blood backflow is fundamentally blocked, and the safety of infusion is improved. The risks of pipeline blockage, blood return pollution and infection are effectively reduced, and needle-free closed operation can be achieved in cooperation with the first silica gel diaphragm in the main pipe cap.

The invention discloses a pressure-adjustable needleless injector based on double springs, and belongs to the technical field of needleless injectors.The technical scheme is that the pressure-adjustable needleless injector comprises an injection head shell, an injection cavity is formed in the injection head shell, and an open hole communicating the outside with the injection cavity is formed in the front end of the injection head shell; an injection push rod extending into the injection cavity is arranged at the rear end of the injection head shell; a transmission assembly is arranged between the driving mechanism and the injection push rod, the transmission assembly comprises a first barrel and a second barrel which are parallel to each other, transmission push rods are arranged in the first barrel and the second barrel in a sliding mode, the two transmission push rods are sleeved with percussion springs, and the two percussion springs are consistent in parameter but different in initial compression amount; the switching connection between the two transmission push rods and the injection push rod is realized by the two transmission push rods through a detachable switching piece; switching connection between the two transmission push rods and the driving mechanism is achieved through detachable connecting pieces. The pressure-adjustable needleless injector has the beneficial effect that the pressure-adjustable needleless injector based on the double springs is provided.

This invention discloses an automated assembly device for intravenous indwelling needles, comprising a needleless positive pressure connector delivery mechanism, a connecting tube delivery mechanism, and a needle assembly mechanism. The connecting tube delivery mechanism is located between the needleless positive pressure connector delivery mechanism and the needle assembly mechanism. Glue application mechanisms are provided on both sides of the connecting tube delivery mechanism. This facilitates automated processing of intravenous indwelling needles, thereby improving processing efficiency, reducing the labor intensity of workers, and ensuring aseptic processing of the indwelling needles.

The utility model provides a needleless injector main body and a needleless injector. The needleless injector body includes: a base; the lens is arranged on the side surface of the base; an upper cover mounted on a side surface of the base and provided with a lens receiving hole to receive and expose the lens; wherein the lens comprises a main body and an installation base which is arranged below the main body and extends outwards in the radial direction to exceed the main body, the upper cover comprises a fixing edge which protrudes downwards from the lens containing hole, and when the upper cover is installed on the base, the fixing edge abuts against the installation base.

The invention relates to the technical field of medical equipment, in particular to a needleless transfusion harbor needle system with puncture prevention and blood backflow early warning functions, which comprises a harbor seat embedded in the body of a patient and a harbor needle matched with the harbor seat for injection, and a fixing block for fixing the harbor needle is arranged on the harbor needle. The fixing block is provided with an infusion tube communicated with the port needle, and the fixing block is provided with a butterfly wing convenient for medical staff to hold; a protection device is arranged outside the harbor needle and comprises a connecting plate fixed to the fixing block and a protection sleeve assembly fixed to the connecting plate, and the protection sleeve assembly can stretch out and draw back freely and surrounds the harbor needle. The needle withdrawal device has the effect of reducing the probability that medical staff are punctured in the needle withdrawal process.

1. The name of the design product: injection end shell for needleless injection device. 2. The use of the design product: for needleless injection device, which cooperates with medicine tube to suck and inject medicine. 3. The design points of the design product: in the shape of the product. 4. The picture or photo that best shows the design points: perspective view 1. 5. Other circumstances that need to be explained: the reference figure is the state after the needleless injection device is pressurized, in which state the gap between the injection end shell and the control end shell of the needleless injection device changes, the button at the end of the control end shell pops up, the cap at the end of the injection end shell is removed, and the medicine tube is inserted on the needleless injection device. 6. Other circumstances that need to be explained: this design patent application is a partial design patent application, and the area covered by the green block in the design picture is the part to be protected by the partial design patent.

The utility model discloses a rotatable handle of a needleless injector, which relates to the technical field of needleless injectors, and adopts the technical scheme that the rotatable handle comprises a needleless injector main body and further comprises a fixing ring fixedly arranged on the needleless injector main body; the movable ring is arranged on the outer side of the fixed ring and can freely rotate relative to the fixed ring; and the holding arm is rotationally arranged on the movable ring. According to the needleless injector, the holding arm is rotationally arranged on the movable ring, and meanwhile, the movable ring is rotationally arranged on the fixed ring, so that the angle of the holding arm can be adjusted in the horizontal direction and the vertical direction relative to the needleless injector main body, and a patient can conveniently adjust a holding mode suitable for the patient to complete independent injection.

The present disclosure provides a needle-free injector, which comprises a drug liquid chamber, a semi-spherical diaphragm and a driving liquid chamber; the semi-spherical diaphragm is clamped between the drug liquid chamber and the driving liquid chamber; the semi-spherical diaphragm is used to isolate the drug in the drug liquid chamber and the driving liquid in the driving liquid chamber, and is also used to transmit the driving force generated by the driving liquid chamber to the drug liquid chamber; the drug liquid chamber is used to store the drug to be injected; and the driving liquid chamber is used to store the driving liquid to provide pressure for the needle-free injector. The present disclosure isolates the drug in the drug liquid chamber and the driving liquid in the driving liquid chamber through the semi-spherical diaphragm, thereby preventing the risk of mixed contamination of the drug and the driving liquid. Meanwhile, when the driving force is generated by ionization of the driving liquid, the semi-spherical diaphragm is subjected to repeated stress more uniformly than the ordinary diaphragm, thereby reducing the risk of cracking of the diaphragm due to repeated stress deformation and increasing the service life of the diaphragm.

A valve including an antibacterial agent may be used with a needleless access connector. The valve may have an insert including an antibacterial coating thereon, and / or the valve may have physical features containing an antibacterial agent, such as a series of channels or grooves or patterned surfaces, and / or the valve may be made of a material including an antibacterial agent.