258 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 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 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.

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 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 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.

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.

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.

Flow path control devices and a method for delivering a medical fluid by flow path control device are disclosed. A flow path control device includes an inner housing and an outer housing. The inner housing includes a knob that rotates the inner housing relative to the outer housing. Rotating the knob activates different flow paths by aligning the flow paths with flow channels on the outer housing. Flow indicators on the inner housing are visible through windows in the outer housing and show a user of the flow path control device which flow channels are open. Additionally, at least one of the flow channels is an access port for a needleless fluid connector. When the flow channels are open, medical fluid can be transported through the flow channels.

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.

A system and method of tattooing skin comprising creating voids extending from a surface of the epidermis into the dermis; introducing a dye through the voids into the dermis; and fixing the dye in the dermis. There is provided a system of needleless tattooing comprising a sensor for sensing a location of the surface of a region of skin of a subject, a dermal penetration device for penetrating into the skin, a controller responsive to the sensor to control the dermal penetration device to penetrate into but not through the dermis in the region of skin of the subject.

The utility model relates to the technical field of needleless injectors, in particular to a one-way valve and a liquid injection mechanism, which comprise an installation assembly, the installation assembly comprises a valve body and a liquid passing channel arranged in the valve body; and a sealing assembly; the sealing assembly comprises an elastic piece arranged in the liquid passing channel, an extrusion piece arranged at the end of the elastic piece and a rubber piece arranged between the extrusion piece and the inner wall of the valve body. The liquid passing channel comprises a liquid inlet end and a liquid outlet end; and the end part of the extrusion piece is in soft contact with the liquid inlet end through the rubber piece. According to the one-way valve and the liquid injection mechanism, liquid medicine is injected into the liquid storage pipe through the liquid inlet pipe, then the liquid medicine is extruded through the piston rod to penetrate through the liquid passing channel of the valve body, spraying injection is completed, soft sealing between the end of the extrusion piece and the liquid inlet end is achieved through the rubber piece in the valve body, and the overall sealing effect is improved.

The needleless connector may include a housing having an inlet port, an outlet port, and an inner surface defining an internal cavity extending between the inlet and outlet ports, and a compressible valve reciprocally disposed within the internal cavity. In a closed state, an upper portion of a head of the compressible valve may have a planar shape configured to contact and seal against the inner surface of the housing. In an open state, in which the compressible valve is subjected to an axial force, the upper portion of the head may be clamped between two pinch points between opposing walls of an inwardly sloping portion of the inner surface. Furthermore, in the open state, the upper portion of the head may have a non-planar shape defining a fluid path at least partially extending between opposing walls of the outwardly sloping portion of the inner surface.

Fluid delivery securement systems, needleless connector securement systems, and methods for regulating fluid delivery with these systems are disclosed. The fluid delivery securement system comprises a catheter securement system and a needleless connector securement system. The catheter securement system and the needleless connector securement system are primary and secondary securement devices that prevent harmful movement of the fluid delivery devices. The catheter securement system includes a catheter securement device adhered to the patient and a catheter hub comprising one or more catheters. The needleless connector securement system comprises a securement device adhered to the patient. The securement device is movably coupled to a bracket, which can be coupled to different needleless connectors. The needleless connectors, in turn, are coupled to catheters. The bracket can rotate and translate the needleless connector and the catheter relative to the securement device, which facilitates clinician access to the needleless connector and the catheter.

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).

A catheter assembly is provided that includes a catheter having a catheter distal end and a catheter proximal end, a catheter adapter coupled to the catheter proximal end and including a lumen in fluid communication with the catheter and an adapter port in fluid communication with the lumen, a near-patient adapter connected to the adapter port via an extension tube and including a distal end and a proximal end, and a needle-free connector coupled to the proximal end of the near-patient adapter. The needle-free connector includes a main body defining an inner lumen and including a distal port and a proximal port, a split septum valve retained within the proximal port and extending into the inner lumen, and a pressure resistance-increasing feature incorporated into or provided adjacent to the split septum valve configured, to increase a pressure capability of the needle-free connector.

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.

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 invention provides a medium processing device and an image forming apparatus, the medium processing device includes: a needle binding device that binds a medium with a needle; a needleless binding device that binds a medium without using the needles; a guide unit that guides the stapled binding device and the needleless binding device in a width direction of a medium; and a frame body disposed at one end of the guide unit in the width direction, the frame body being disposed further toward the inside than the outer end of the needleless binding device in the width direction when the needleless binding device moves to the one end of the guide unit.

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.

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.