143 results about "Needle Free Injection" patented technology

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.

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.

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 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.

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.

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.

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 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.

An intravitreal drug delivery tool (50) for positioning a needleless syringe for injecting a substance to be injected into the vitreous body of an eyeball without passing through an injection needle, the intravitreal drug delivery tool (50) being provided with: a guide (54) at least a part of which is formed in a shape corresponding to the outer edge of the cornea in the eyeball; and a positioning part (51) that is connected to the guide (54) and the needleless syringe, and that positions the needleless syringe when the guide (54) is disposed so as to be aligned with the outer edge of the cornea. The positioning unit (51) positions an injection port (77) from which the injection target substance is injected in the needleless injector at a position separated from the outer edge of the cornea toward the rear of the eyeball by a predetermined distance.

The utility model relates to a needleless injector main part and needleless injector, wherein, the needleless injector main part includes first component and the second component that can with first component opposite movement, wherein, the needleless injector main part still includes the first auxiliary device for providing visual feedback, the first auxiliary device includes: at least one dose mark, at least one dose mark sets up on the outer surface of second component, first opening, first opening sets up on first component and visual enhancement element, visual enhancement element is fixed on first component and is positioned to align first opening, wherein, in the process of first component and second component relative motion, at least one dose mark aligns first opening in turn and is optically magnified by visual enhancement element. The needleless injector includes injection head and the needleless injector main part.

1. The name of the design product: needleless injector. 2. The use of the design product: needleless injector for injecting liquid medicine. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

An elastic membrane for transmitting driving pressure of a needleless syringe, and the needleless syringe using same are disclosed. The elastic membrane (500) for transmitting pressure comprises: a body (510) which has elasticity, and which is provided between a driving chamber (402) and a driven chamber (202) so as to partition the driving chamber (402) from the driven chamber (202) in a sealed state; a driven protrusion part (520) in which a pressure-side cavity (522) opened to the driving chamber (402) is formed, and which protrudes from the central portion of the body (510) toward the driven chamber (202); and a driving protrusion part (530) which is spaced a predetermined distance from the edge of the body (510) and which protrudes toward the driving chamber (402), wherein, when a pressure (F) is applied from the driving chamber (402) such that the driving protrusion part (530) is pressed toward the driven chamber (202), the edge of the body (510) facing the driven chamber (202) becomes a hinge point (H), and thus the driven protrusion part (520) transmits the pressure while deformed toward the driven chamber (202).

1. The name of the design product: medicine taking interface for needleless injector (SJ-01 type). 2. The use of the design product: for taking medicine of needleless injector. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

1. The name of this design product: needle-free syringe. 2. Purpose of this design product: This design product is used to provide a medical injection that does not use a needle to pierce the skin. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the technical field of needleless injectors, in particular to a connecting structure of a piston rod and a push rod and a needleless injector thereof, the connecting structure comprises the piston rod and the push rod, the piston rod comprises a first rod body and a first clamping part located at the end of the first rod body, and the first clamping part comprises a plurality of clamping jaws. The push rod comprises a second rod body and a second clamping part located at the end of the second rod body, the second clamping part comprises an inner limiting body and an outer limiting body located on the periphery of the inner limiting body, and an annular limiting cavity allowing the clamping jaws to be clamped in so as to fix the clamping jaws is formed between the inner limiting body and the outer limiting body; according to the utility model, the inner limiting body and the outer limiting body on the push rod are utilized to form the annular limiting cavity in which the clamping jaws are clamped to fix the clamping jaws, and the outer limiting body surrounds the outer sides of the plurality of clamping jaws to limit the outward bending degree of the clamping jaws, so that the clamping jaws are prevented from being separated from the push rod; the inner limiting bodies are supported on the inner sides of the clamping jaws to limit the inward bending degree of the clamping jaws, so that the breaking phenomenon caused by excessive bending of the clamping jaws is avoided.

The utility model provides a needleless injector main body and a needleless injector. The needleless injector body includes a locking mechanism for the injection actuator, the locking mechanism including: a pressing member provided on a side of the base; the blocking component comprises at least one vertical arm, and each vertical arm comprises a groove; the pivot component is arranged between the pressing component and the blocking component and comprises a pivot shaft and a first pivot arm and a second pivot arm which extend on the two sides of the pivot shaft, the first pivot arm is connected with the pressing component, the second pivot arm is connected with the blocking component, the injection actuator comprises at least one stop protrusion, and in the locking state, the stop protrusion is connected with the pressing component. During unlocking, the pressing component is pressed to drive the first pivoting arm to move downwards, the second pivoting arm moves upwards and drives the blocking component to move upwards, so that the grooves are aligned with the corresponding locking protrusions, and the corresponding locking protrusions are allowed to pass through. Thereby allowing the injection actuator to move from the non-actuated position to the actuated position.

This invention relates to a midazolam nanocrystal suspension, which, by weight-volume percentage, comprises 5%–45% midazolam, 1%–10% Tween, and 0.1%–10% sodium deoxycholate (SDC). The midazolam nanocrystal suspension of this invention exhibits superior blood-brain barrier permeability and bioavailability, making it suitable for needle-free injection administration.

To provide a technology for injecting at least an injection object substance intracutaneously.SOLUTION: A device assembly for needleless syringe intracutaneously injects an injection object substance not via an injection needle, in which an energy value of gas generated when an igniter and a gas generating agent the device assembly are combusted, is within a prescribed range.SELECTED DRAWING: Figure 1

This disclosure provides a needle-free injector and its assembly and control methods. The needle-free injector includes a nozzle, a drug chamber, a driving fluid chamber, and a housing. The housing includes a guide groove; the driving fluid chamber includes a first side boss corresponding to the guide groove; the drug chamber includes a second side boss corresponding to the guide groove; the nozzle is disposed inside the housing; the driving fluid chamber is disposed inside the housing along the guide groove via the first side boss; the drug chamber is disposed inside the housing along the guide groove via the second side boss; the drug chamber stores the drug to be injected; the driving fluid chamber stores the driving fluid to provide pressure for the needle-free injector; the nozzle sprays the drug from the drug chamber into the patient's skin tissue. This disclosure, through a simple mechanical structure, reduces the number of fixing screws and uses the interlocking of components for fixation, thus reducing the cost of using the needle-free injector as a consumable, thereby reducing the patient's treatment costs.

The utility model provides a needleless injector main body and a needleless injector. The needleless injector body includes a locking mechanism for the injection actuator, the locking mechanism being configured to lock the injection actuator in a non-actuated position in a locked state and to allow the injection actuator to move from the non-actuated position to an actuated position in an unlocked state, the locking mechanism including: a pressing member provided on a side of the base; the blocking component is arranged below one end of the pressing component and comprises at least one vertical arm, each vertical arm comprises a groove, the injection actuator comprises at least one stop protrusion, in the locking state, the grooves and the corresponding stop protrusions are staggered, in the unlocking state, the pressing component is pressed, the pressing component drives the blocking component to move downwards, and in the locking state, the blocking component drives the injection actuator to move downwards. The groove is aligned with the corresponding stop protrusion and allows the corresponding stop protrusion to pass through, so that the injection actuator is allowed to move from the non-actuating position to the actuating position.

This utility model relates to a needleless injector body and a needleless injector. The needleless injector body includes a first component and a second component capable of relative movement with respect to the first component. The needleless injector body also includes an auxiliary device having a first feedback component and a second feedback component. The first feedback component is disposed on the first component and moves with it, and the second feedback component is disposed on the second component and moves with it. When the first component and the second component move relative to each other, the first feedback component and the second feedback component interact to provide tactile and / or auditory feedback. The needleless injector includes an injection head and the needleless injector body.

The invention belongs to the field of injectors, and particularly relates to a multi-hole needleless injector driven by a same-air-source double-channel Laval nozzle, which comprises a compressed air source and a control valve, the two Laval nozzles are arranged in parallel and have different structural parameters, and inlets of the two Laval nozzles are both communicated with the compressed air source; the pneumatic cavities are respectively communicated with outlets of the two Laval spray pipes; the pistons are arranged in the cavities; the liquid medicine storage chamber is connected with the piston of the transmission assembly; the injection spray head assembly is connected with an outlet of the liquid medicine storage chamber and comprises a central main spray hole and a plurality of peripheral auxiliary spray holes arranged around the central main spray hole, the central main spray hole corresponds to the piston driven by one path of high-pressure air flow, and the peripheral auxiliary spray holes correspond to the piston driven by the other path of low-pressure air flow. Under the condition that a needle head is not needed, the subcutaneous distribution uniformity of liquid medicine is remarkably improved, the injection precision is improved, and the tissue damage risk is reduced.

The utility model discloses an anti-shake structure of an electric needleless injector for livestock. The anti-shake structure provides two more optimized functions that the risk of falling off is reduced when the anti-shake structure is externally connected with a needle tube or a long medicine bottle and the like. When a machine generates vibration, the anti-shake rubber ring can disperse part of force through the flexible connection at the position, so that an external connection piece which is regarded as a force arm cannot fall off easily. And the internal waterproof rubber ring can be effectively prevented from loosening. Due to the fact that the fixing mode of the liquid inlet pipe and the internal metal piece is rigid connection containing the rubber ring, if the liquid inlet pipe is then in rigid connection with the shell, dislocation or leakage of the position with the rubber ring is possibly caused by vibration, and then the rubber ring loses efficacy, and flexible connection between the liquid inlet pipe and the shell is very important.

The invention discloses a testing device and method for testing the injection effect of a needleless injector, and relates to the technical field of needleless injector test.The testing device comprises a positioning support used for fixing the needleless injector; the positioning support is fixed on a sliding rail, a sliding block base is further arranged on the sliding rail in a sliding mode, a sensor is arranged on the sliding block base, and a stress circular plate is fixedly connected to the sensor through a connecting rod; the circular axis of a nozzle opening of the needleless injector coincides with the circular axis of the stress circular plate. The system further comprises a high-speed sampling module which is electrically connected with the sensor and used for continuously sampling pressure generated by jet flow on the stress face so as to judge a pressure curve of the whole injection process. According to the invention, the injection pressure of the needleless injector is tested for multiple times within the preset time, so that the puncture effect of injection and the drug injection effect are tested.

This invention relates to the field of auto-injector technology and discloses a fully automatic intelligent high-pressure needleless injector, comprising a main body, a needleless injection head detachably mounted on the injection end of the main body, a gripping drive assembly disposed in the middle of the inner cavity of the main body, and an impact assembly connected to the gripping drive assembly disposed in the inner cavity of the main body at the end away from the needleless injection head, and a charging assembly disposed on the inner cavity and outer end of the main body on the same side as the impact assembly; the invention, by providing a gripping drive assembly and an impact assembly, facilitates users to set the required drug injection volume and injection pressure parameters via a mobile APP, and transmits the information to the injector's control module via Bluetooth communication. The control module analyzes the received injection volume and injection pressure parameters and realizes an intelligent integrated control process for automatic drug replenishment and automatic injection of the needleless injector, improving the control capability of drug injection dosage and force.

A displacement prevention material for suppressing displacement between a target region of an eyeball that is an injection target and a syringe that ejects an injection target substance from an ejection port toward the target region, the displacement prevention material being provided with: a base body that is provided on the injection port; an injection part disposed around an axis along the injection direction of the injection target substance so as to surround the injection part; and a concavo-convex portion provided on the target region side of the base body.

1. Name of the designed product: needleless injector. 2. Use of the designed product: for injecting medicine. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The embodiment of the utility model discloses a needleless injection device, and relates to the technical field of needleless injection. The needleless injection device comprises a main shell, an injection head, a medicine pushing piece and a driving assembly. The main shell is provided with a movable cavity. The injection head is detachably connected to one end of the main shell, a medicine storage cavity is formed in the injection head and communicates with the movable cavity, and an injection micro-hole is formed in the end, away from the main shell, of the injection head and communicates with the medicine storage cavity. The medicine pushing piece is detachably arranged in the medicine storage cavity. The driving assembly is connected with the medicine pushing piece and moves in the movable cavity so as to push the medicine pushing piece to change the volume of the medicine storage cavity. According to the needleless injection device, the injection head and the medicine pushing part are both arranged to be in a detachable installation mode, so that after the needleless injection device is used, the injection head and the medicine pushing part can be replaced by disassembling the injection head and the medicine pushing part, cross contamination of liquid medicine can be avoided, the needleless injection device can be continuously used, the whole needleless injection device does not need to be discarded, and the use cost is saved.