36 results about "Needle Free Injection" patented technology

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 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.

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.

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).

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.

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.

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.

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 needle-free injector including dose setting apparatus. The needle-free injector includes a hammer housing, a mainspring positioned within the hammer housing, and a hammer assembly engaged with the mainspring. The hammer assembly may include a hammer sleeve and a hammer engaged with the hammer sleeve, where the engagement between the hammer sleeve and the hammer provides for a forward or rearward position of the hammer with respect to the hammer sleeve be changed to select an injection dose from two or more available injection doses. Additional embodiments include methods of varying or setting the dose delivered by a needle-free injector.

The present disclosure provides a needleless injector, which comprises a drug liquid chamber, a first one-way valve and a nozzle; the first one-way valve is arranged outside the outlet of the drug liquid chamber and in the inner cavity of the nozzle; the drug liquid chamber is used for storing the drug to be injected; the first one-way valve is used for allowing the drug to flow from the drug liquid chamber to the nozzle in one direction; and the nozzle is used for spraying the drug liquid into the skin tissue of a patient. The present disclosure realizes the one-way flow of the drug through the first one-way valve and the second one-way valve. The drug is allowed to flow only from the drug feeder to the drug liquid chamber and only from the drug liquid chamber to the nozzle. The backflow of the drug is prevented, the injection efficiency is increased, and the accurate control of the injection amount of the drug is promoted.

1. Name of the design product: needleless injection assembly. 2. Use of the design product: for performing the suction and injection of liquid medicine. 3. Design points of the design product: in the shape of the product. 4. Picture or photograph best indicating the design points: perspective view 1.

The utility model provides a cap for needleless injection equipment and a needleless injection component, the needleless injection equipment comprises an injector main body and an injection head, and the injection head is constructed to be capable of being installed on the injector main body for medicine suction and injection. The cap has a proximal end and a distal end, wherein the cap includes a body member and a pressing member. The main body piece is arranged at the far end of the cap and can be arranged on the syringe main body in a sleeving mode. The pressing piece is arranged at the near end of the cap and connected to the main body piece, the pressing piece comprises a sleeving part and a peripheral part arranged on the periphery of the sleeving part, the sleeving part is constructed to be capable of sleeving the injection head, an annular groove part is formed between the peripheral part and the sleeving part, and the peripheral part and the sleeving part are connected together through the groove part; an opening of the groove portion faces the proximal end of the cap. According to the scheme, the skin around the injection part can be automatically pinched up by the groove part when the needleless injection equipment performs injection operation, so that the stability during injection is improved.

This disclosure provides a laser therapy device and its control method. The laser therapy device includes: a beam transmission module, a handpiece, and a needle-free injector; one end of the handpiece is threadedly connected to the light outlet of the beam transmission module; the other end of the handpiece is threadedly connected to the needle-free injector; the handpiece is used to receive a first laser beam emitted from the beam transmission module, to shape and focus the first laser beam, and to change the optical parameters of the first laser beam; the needle-free injector is used to receive a second laser beam emitted from the handpiece to drive the injection of a drug solution into the patient's skin tissue. This disclosure achieves a rotary connection by threading the beam transmission module, handpiece, and needle-free injector, resulting in a simple structure and minimalist appearance for the laser therapy device, making it convenient for the operator to use.

The utility model discloses a kind of noise reduction structure of veterinary electric needleless injector;Including motor, oblique falling surface rotation worm, transmission bearing, spring connecting rod;Motor shaft is fixed with rotation worm, transmission bearing is tangent with the slope of rotation worm, transmission bearing is fixed with spring connecting rod.When motor rotates and drives worm to rotate, worm and bearing tangent move from low end to high end, spring connecting rod is moved back to compress spring simultaneously.When worm moves to the highest point, it is driven to fall by spring, the falling surface of this worm is small-angle slope, can effectively reduce the noise generated by spring kinetic energy too big under the premise of not affecting injector nozzle liquid outlet.Compared with prior art, the utility model has the following beneficial effects: the noise reduction mode of a kind of veterinary electric needleless injector proposed by the utility model increases a small-angle included angle to the falling surface of worm rotated by motor, can effectively reduce the noise generated when spring rebounds under the premise of not affecting nozzle liquid outlet.

This application includes 11 similar designs, of which design 1 is designated as the basic design. The gist of design 6 is the shape of a "needleless injection component," as shown in the figure and description. The product shown in this design is used for aspirating and injecting liquid drugs. 6.1) Phase change diagram; 6.2) Phase change diagram; 6.3) Top view; 6.4) Rear view; 6.5) Perspective view; 6.6) Perspective view; 6.7) Bottom view; 6.8) Right side view; 6.9) Front view; 6.10) Left side view

For an applicator for needleless injection of an active medium (WM), which permits a high injection pressure and ensures a reliable and secure separation of the injectable active medium (WM) from the actuation of the device (1), an injection valve (20) is provided in the applicator (B) and a working medium (AM) with a working pressure (pA) can be applied at an inlet (27) of the injection valve, a pressure volume (21) is provided in the applicator (B), and the pressure volume (21) is filled with working medium (AM) at an initial pressure less than the working pressure (pA), the operational injection valve (20) is configured to inject into the pressure volume (21) a predetermined injection quantity of the working medium (AM) with an injection pressure (pE) between the working pressure (pA) and the initial pressure, and there is provided in the applicator (B) a movably arranged plunger (22), which at a first end has a plunger piston (26) that at least partially delimits the pressure volume (21), and which, with an opposite second end, bears on the pressure piston (25) such that the operational plunger (22) is movable in the direction of the pressure piston (25) in order to move the pressure piston (25) so as to deliver an active-medium pulse from at least nozzle opening (29)m, (FIG. 2).

The utility model relates to medical equipment technical field especially relates to a continuous needleless injector, including medicine pipe, it has medicine liquid chamber, medicine liquid chamber includes intercommunication injection chamber and pressurizing chamber, and is equipped with push rod in pressurizing chamber, and the lateral wall of pressurizing chamber is connected with medicine liquid storage chamber, the junction of pressurizing chamber and injection chamber and its junction with medicine liquid storage chamber all are equipped with valve chamber, one end of valve chamber is equipped with liquid input, and the other end is equipped with liquid output, is equipped with check valve in valve chamber, check valve includes float valve and elastic part, float valve includes sealing part and valve core seat, and valve core seat sets up in the bottom of sealing part, and valve core seat is equipped with liquid flow guide groove, and liquid flow guide groove and the inner wall of valve chamber form liquid flow guide chamber, and liquid flow guide chamber is connected with the liquid output of valve chamber, and elastic part sets up between the bottom of valve core seat and liquid output, the utility model discloses simple structure, good sealing, injection response speed is fast and injection accuracy is high.

The utility model provides needle-free injection equipment. The needleless injection device includes an operating portion disposed at a distal end of the needleless injection device and having an operating portion housing and an injection portion. The injection part is arranged at the near end of the needleless injection device and provided with an injection part shell, the injection part is connected to the operation part, and the near end of the injection part is provided with a first opening used for installing a medicine tube. Wherein the operating part is configured to be rotatably mounted to the injection part and can reciprocate relative to the injection part when the operating part rotates relative to the injection part, and the cross section of at least one part of the outer side wall of the operating part shell is in a non-circular shape, and / or the cross section of at least one part of the outer side wall of the operating part shell is in a non-circular shape. The cross section of at least one part of the outer side wall of the injection part shell is in a non-circular shape. According to the scheme, a user can conveniently carry out operations such as holding and screwing on the operation part or the injection part of the needleless injection equipment.

This application includes 11 similar designs, of which design 1 is designated as the basic design. The gist of design 9 is the shape of a "needleless injection drug cartridge," as shown in the figures and description. The product shown in this design is used in conjunction with a needleless injection device for aspirating and injecting liquid drugs. 9.1) Top view; 9.2) Rear view; 9.3) Perspective view; 9.4) Perspective view; 9.5) Perspective view; 9.6) Bottom view; 9.7) Right side view; 9.8) Front view; 9.9) Left side view

This application includes 11 similar designs, of which Design 1 is designated as the basic design. The gist of Design 2 is the shape of a "needleless injection device," as shown in the figures and description. The product shown in this design is used in conjunction with a needleless injection device for aspirating and injecting liquid drugs. 2.1) Top view; 2.2) Rear view; 2.3) Perspective view; 2.4) Perspective view; 2.5) Perspective view; 2.6) Bottom view; 2.7) Right side view; 2.8) Front view; 2.9) Left side view

This invention provides a needle-free injector assembly carrier, belonging to the field of automated assembly technology for needle-free injectors. It solves the problem of existing carriers carrying only a single material, resulting in large production lines and low processing efficiency. The carrier includes a base for connection to a conveyor line, with an assembly area. The assembly area has a lower tube positioning part, a lower shell positioning part, and an upper shell positioning part arranged at intervals to respectively accommodate and circumferentially limit the lower tube assembly, lower shell assembly, and upper shell assembly of the needle-free injector. This carrier can integrate and transport the lower tube assembly, lower shell assembly, upper shell assembly, and core rod assembly of the needle-free injector. The assembly processes and mechanisms between the major components can be arranged on both sides of the carrier's conveyor line, directly assembling the various components on the carrier into finished products. This design simplifies the production line layout and improves processing efficiency.

The application relates to the technical field of medical equipment and discloses an adjustable large-dose beauty-plastic boosting device and an injection device, which comprise a gun body, a striker and a stroke adjusting module. The striker is arranged in the gun body in an axially movable mode and comprises a firing section, a piston section, a tail rod section and a first limiting shoulder which are sequentially arranged along the axis. The piston section is in sealing cooperation with a piston cavity, a firing channel is matched with the firing section, and the firing channel and / or the piston cavity is provided with a gas guide hole in communication with the outside at one end close to the firing channel. The stroke adjusting module comprises a stroke adjusting sleeve which is sleeved on the outer periphery of the tail rod section and is in screw connection with the gun body. The stroke adjusting sleeve is provided with an axially extending accommodating groove, and the first limiting shoulder is accommodated in the accommodating groove. By rotating the stroke adjusting sleeve to change the axial position of the stroke adjusting sleeve, the abutting position of the first limiting shoulder and the stroke adjusting sleeve can be adjusted, so that the firing stroke of the striker is changed. The beauty-plastic boosting device can reduce the number of liquid suction times and save needleless injection tools.

This invention relates to the field of needle-free injector technology, and in particular to an apparatus and method for needle-free injection of local anesthetics into the dermis for infiltration anesthesia. The apparatus includes a receiving space for containing the anesthetic solution; the injection pressure is 14-21 MPa. This invention allows for the design of different needle-free injectors to address the physiological differences in the dermis between men and women, ensuring precise intradermal injection of the anesthetic solution and avoiding entry into the muscle layer. Furthermore, it results in less pain during injection and a longer duration of effect from the onset and exhaustion of the local anesthetic.

The utility model provides a kind of needleless injector main body and needleless injector.The needleless injector main body includes the auxiliary medicine suction mechanism for storing bottle, auxiliary medicine suction mechanism is arranged between storage bottle and main push rod, and auxiliary medicine suction mechanism includes: auxiliary push member, configured to engage with the piston of storage bottle before medicine suction operation;Actuating spring is arranged between auxiliary push member and main push rod, wherein, before medicine suction operation, actuating spring is in compressed state, the piston of storage bottle remains stationary relative to main push rod, during medicine suction operation, the piston of storage bottle moves forward relative to main push rod, and auxiliary push member is pushed forward the piston of storage bottle under the action of actuating spring.

This utility model relates to the field of medical devices, specifically disclosing a multi-head needleless injector with a flow-through mechanism, comprising a fluid-passing body, an injection head, and a fluid supply mechanism. The fluid-passing body has a fluid-passing chamber containing a push plug. The injection head is located at the front end of the fluid-passing body and has three or more injection nozzles. The fluid supply mechanism is located on one side of the fluid-passing body. The injection head has a first valve chamber separated from the fluid-passing chamber by a partition plate with a connecting hole. A first valve core is located within the first valve chamber. The fluid supply mechanism has a second valve chamber containing a second valve core. The first valve core includes a flow-dividing plate and a drainage column. The flow-dividing plate has a flow-dividing cavity on its front side, and the drainage column has a conical portion, a converging channel, and a diverting channel. Using this utility model, injection can be performed simultaneously through multiple injection nozzles, improving efficiency, and ensuring a consistent flow rate for each injection nozzle.

This utility model discloses a needle-free injector for pigs, comprising: a shell, an electric pressure generator body fixedly installed on the inner wall of the shell, and a power supply body fixedly installed on the inner wall of the shell. The needle-free injector for pigs provided by this utility model involves injecting a certain amount of liquid medicine or vaccine into a storage bottle, then sealing the storage bottle inside a connecting tube, then filling the shell with water at a suitable temperature, then attaching a threaded cap to the shell via a threaded seal, then pressing two pressure rods in the middle to fully insert the insertion block into the fixing seat, and then releasing the two pressure rods to allow the insertion tube to be inserted into the corresponding insertion block. A heat-insulating sleeve is then placed over the shell, reducing the impact of external temperature on the shell, and the temperature of the liquid medicine in the storage bottle is further reduced by the temperature of the water inside the shell, ensuring the subsequent injection effect of the medicine and improving the practicality of the device.

This application provides a needle-free microfluidic injection device, relating to the field of needle-free injection technology. The needle-free microfluidic injection device includes a main body, a laser generator, and a nozzle. The main body has a pressure generating chamber and a liquid storage chamber arranged sequentially along its height. The pressure generating chamber holds a pressurized liquid, and the liquid storage chamber holds an injection solution. A first elastic membrane is provided at the bottom of the pressure generating chamber to seal its bottom, and a second elastic membrane is provided at the top of the liquid storage chamber to seal its top. The surfaces of the first and second elastic membranes are connected by a connecting plate. The laser generator generates laser light to react with the pressurized liquid and generate energy. The nozzle is installed at the bottom of the main body, and its interior communicates with the liquid storage chamber. The nozzle is used to eject the injection solution from the liquid storage chamber. It exhibits good stability and can improve the problem of large differences in injection dosage.

The utility model provides a kind of coupling device, can be used for needleless injector, injector includes injector main body and injection head, and injection head includes medicine pipe, coupling device includes: the first joint of being arranged in injector main body;Second joint is arranged in medicine pipe, second joint can cooperate with the first joint, and medicine pipe is removably installed to the distal portion of injector main body;First cooperation feature part is arranged in medicine pipe;And second cooperation feature part is arranged in injector main body, during the process that medicine pipe is installed to injector main body, when medicine pipe reaches the fastening position being properly fastened to injector main body, first cooperation feature part and second cooperation feature part cooperate to provide feedback to operator.The utility model also provides injection head and needleless injector.The coupling device of the utility model ensures that operator can properly fasten both when installing medicine pipe each time, ensures injection safety, reduces the incidence of instrument damage.

The application discloses an intelligent needleless injector, and particularly relates to the field of needleless injection technology, which comprises an outer shell, a support is arranged in the inner cavity of the outer shell, a motor seat is linearly and slidingly arranged in the inner cavity of the thick end of the support, a driving motor is arranged in the motor seat, an energy storage mechanism is driven at the output end of the driving motor, the energy storage mechanism is always abutted against a driving spring extending towards the driving motor, the other end of the driving spring is abutted against the inner cavity step of the support, and the driving spring is abutted against a pressure sensor at any end, a dose adjusting motor is fixedly arranged at the end of the energy storage mechanism close to the driving motor, a medicine taking mechanism is driven at the output end of the dose adjusting motor, a connecting rod of the medicine taking mechanism is connected with a push rod, a medicine storage cylinder is connected to the slender end of the support, and the end of the push rod away from the medicine taking mechanism is connected with a piston, even if the elasticity of the driving spring decreases after long-term use, the initial injection pressure can be accurately controlled, and the skin can be ensured to be punctured.

The present application relates to the technical field of needleless injector, and particularly relates to a portable needleless injector, which comprises a mounting unit, a force storage unit and a trigger unit. The mounting unit comprises a mounting cavity. The force storage unit comprises a moving rod slidingly arranged in the mounting cavity, a first elastic member arranged between the moving rod and the mounting cavity, and a driving assembly arranged in the mounting cavity and matched with the moving rod. The trigger unit comprises a limiting assembly matched with the moving rod. The needle unit comprises a needle tube communicated with the mounting cavity and a piston rod slidingly arranged in the needle tube. The portable needleless injector can control the moving rod to extrude the first elastic member and then be limited by the limiting assembly to achieve the force storage effect. Then, the moving rod is extruded by the elastic force of the first elastic member, and the moving rod controls the piston rod to move to extrude and spray the liquid medicine in the needle tube.