KR20230169895A - Replaceable needleless syringe - Google Patents

Abstract

The nozzle-replaceable needleless syringe according to the present invention includes a main body provided with a driving force generator for pressurizing the drug, and a nozzle for spraying the drug, and the nozzle can be separated or combined from the main body, so that the nozzle can be separated or combined with the main body. Since only the nozzle can be replaced from the main body, there is an advantage in preventing secondary infection through the syringe. In addition, since the structure of the attaching and detaching means for separating or attaching the nozzle to the main body is very simple and easy to use, convenience of use can be ensured. In addition, by providing a sealing member between the main body and the nozzle, the drug can be prevented from getting on the main body, so the nozzle can be replaced while preventing contamination of the main body.

Description

Nozzle replaceable needleless syringe {Replaceable needleless syringe}

The present invention relates to a needle-free syringe, and more specifically, to a needle-less syringe that can repeatedly inject drugs at high speed without an injection needle, and can prevent contamination by allowing the nozzle to be replaced.

In general, a syringe is a device that injects a chemical solution into the tissue of a living organism. A syringe consists of a needle that is inserted into the body, a syringe that holds the medicine, and a piston that reciprocates inside the syringe and pushes the medicine into the needle. The needle has a hole through which the drug is injected during the injection.

Recently, research and development on needle-free syringes has become active in order to alleviate the fear of syringe needles and prevent infections caused by needles.

However, because existing needle-less syringes are designed to inject a certain amount of drug into only one area of the skin at a time, damage to skin tissue may occur.

In addition, because there are inconveniences such as reloading after a single injection, there is a limitation in that it cannot be used to evenly inject the drug multiple times into a large area of skin in fields such as skin care.

Korean Patent No. 10-1945554

The purpose of the present invention is to provide a needle-free syringe that can be reused while preventing secondary infections caused by the nozzle by replacing the nozzle for injecting the drug.

The nozzle-replaceable needleless syringe according to the present invention is a needleless syringe that repeatedly sprays a drug at high speed, comprising: a main body provided with a driving force generator that generates a driving force for spraying the drug; a nozzle that is detachably coupled to the main body, has a drug receiving portion that accommodates the drug, and sprays the drug contained in the drug receiving portion to the outside by the driving force; It includes attachment and detachment means provided on the main body and the nozzle to separate the nozzle from the main body or to couple the nozzle to the main body when the nozzle is replaced.

The attachment/detachment means includes a plurality of coupling pieces, one side of which is fixed to the main body and the other side elastically open toward the outside of the main body, each having a hook formed on the other end, and an axial direction on the outer peripheral surface of the main body. A hollow slider is slidably coupled to press the coupling pieces toward the inside of the main body when moving forward and release the pressure on the coupling pieces when moving backward, and is formed on the outer peripheral surface of the nozzle, When the slider presses the coupling pieces, it includes a hook coupling groove that engages with the hook of the coupling pieces, inserting the nozzle into the nozzle insertion hole formed in the main body when the slider moves backward, and inserting the hook into the nozzle insertion hole formed in the main body when the slider moves forward. It is coupled to the hook coupling groove.

The attachment/detachment means includes a button provided on the outer peripheral surface of the main body so as to be pressable toward the inside, a hook connected to the button and protruding in a direction toward the nozzle, and formed on the nozzle in a state in which the button is pressed. The hook is inserted and includes a hook coupling groove formed so that the hook is caught and coupled when the button is pressed and released.

The attachment/detachment means further includes a coupling protrusion formed to protrude toward the main body on a surface of the nozzle facing the main body, and a coupling groove formed in the main body so that the coupling protrusion is pressed into the main body.

The attaching and detaching means include a pivoting groove formed on the outer periphery of the nozzle insertion hole formed on the front surface of the main body; It includes a rotating protrusion that protrudes outward from the outer peripheral surface of the nozzle, is inserted into the rotating groove when the nozzle is inserted into the nozzle insertion hole, and is caught and coupled to the nozzle insertion hole when the nozzle is rotated. After inserting it into the nozzle insertion hole, rotate it at a predetermined angle to combine it.

The attachment/detachment means is rotatably coupled to the main body, is formed to spread toward the outside of the main body when held and pressed, and is provided with a coupling piece having a hook formed at an end, and between the main body and the coupling piece. It includes an elastic member that restores the piece to its original position, and a hook coupling groove formed on the outer peripheral surface of the nozzle so that the hook is caught and coupled.

The attachment/detachment means includes a guide protrusion protruding outward on the outer circumferential surface of the main body, a coupling groove formed on the outer circumferential surface of the nozzle, a rotation axis inserted into the coupling groove, and a position spaced apart from the rotation axis by a set distance in the longitudinal direction. a width direction movable slit formed to be long in the width direction so that the guide protrusion is inserted to enable movement in the width direction; and a longitudinal movement slit extending in the longitudinal direction from the width direction movement slit so that the guide protrusion is movable in the longitudinal direction. and a coupling rotation lever including a slit, wherein the coupling rotation lever rotates around the rotation axis and varies the distance between the guide protrusion and the rotation axis according to the rotation angle, thereby bringing the nozzle into close contact with the front of the main body. Combine it while doing so.

The attachment/detachment means includes a coupling pin protruding from the outer peripheral surface of the nozzle, and is formed on a side of the main body, and allows the coupling pin to slide in the axial direction when the nozzle is axially inserted into the main body. An axial guide groove formed long in the axial direction, the nozzle communicating with the axial guide groove on a side of the main body, formed long in the rotation direction of the nozzle perpendicular to the axial direction, and inserted into the interior of the main body. It includes a rotation direction coupling groove formed so that the coupling pin slides in the rotation direction and then becomes caught when the coupling pin is rotated.

The rotational direction coupling groove is formed to have a width smaller than the diameter of the coupling pin and includes a separation prevention portion that prevents the coupling pin from separating.

A drug ampoule that is detachably coupled to an ampoule mounting portion formed on an outer surface of one of the main body and the nozzle to supply drug to a drug supply hole formed in the drug receiving portion, and an ampoule installed to open and close the ampoule mounting portion. Includes more covers.

The driving force generator is provided inside the main body and includes a pressure chamber in which pressure generation liquid is stored, and an energy focusing unit that concentrates and applies energy to the pressure generation liquid stored in the pressure chamber, and is supplied from the energy focusing unit. The pressure generating liquid is temporarily vaporized by the applied energy, and the drug is sprayed using the pressure of the bubbles generated.

It further includes a sealing member provided on at least one of the main body and the nozzle to prevent the drug contained in the drug receiving portion from leaking into the driving force generating portion.

The sealing member is installed at the end of the pressure chamber, and includes a fixed elastic membrane that expands in the direction of pressing the drug in the drug receiving portion when the pressure of the pressure chamber increases, and is installed opposite to the fixed elastic membrane in the nozzle. and expands together with the fixed elastic membrane, and includes a replacement elastic membrane that is attached and detached from the main body together with the nozzle.

The driving force generator includes a solenoid coil wound around the outer peripheral surface of the main body, a moving magnetic body that is longitudinally inserted into the inside of the main body and moves forward by a magnetic force generated when a current is applied to the solenoid coil, and the inside of the main body. A piston is inserted ahead of the moving magnetic body and moves forward by the impact force applied by the moving magnetic body when the moving magnetic body moves forward, and is provided between the moving magnetic body and the piston in a direction in which the moving magnetic body moves backward. It includes an elastic member for the moving magnetic body that provides elastic force to the moving magnetic body, and a forward and backward driving means that repeats forward and backward movement of the piston by repeatedly supplying and blocking current to the solenoid coil at a preset cycle.

It further includes a sealing member provided on at least one of the main body and the nozzle to prevent the drug contained in the drug receiving portion from leaking into the driving force generating portion.

The sealing member is installed opposite to the end of the piston in the nozzle, is formed to be flexible when the piston moves forward and backward, and includes a replacement elastic membrane that is detachable from the main body together with the nozzle.

The replacement elastic membrane is fastened and fixed to a cover holder provided on the inner peripheral surface of the drug receiving portion.

The sealing member is fixedly installed inside the main body to cover an end of the piston, and includes a fixed elastic membrane that is flexible when the piston moves forward and backward.

The sealing member includes a replacement piston that is detachably coupled to the end of the piston, is disposed inside the drug receiving portion, and presses the drug in conjunction with the piston when the piston moves forward and backward.

A screw coupling portion with male threads is formed to protrude on one of the piston and the replacement piston, and a coupling groove with female threads is formed on the other one of the piston and the replacement piston so that the screw coupling portion is screwed together.

The sealing member is provided to be able to move forward and backward inside the nozzle, and is provided between a replacement piston that moves forward and presses the drug when the piston moves forward, and between the nozzle and the replacement piston, It further includes an elastic member for the replacement piston that provides elastic force to the replacement piston to move backward when moving backward.

A nozzle-replaceable needleless syringe according to another aspect of the present invention is a needleless syringe that repeatedly sprays a drug at high speed, comprising: a hollow main body; It is provided inside the main body and includes a pressure chamber in which pressure generation liquid is stored, and an energy focusing unit that concentrates and applies energy to the pressure generation liquid stored in the pressure chamber, and the energy applied from the energy focusing unit is used to a driving force generator that uses the pressure of the bubble created by temporarily vaporizing the pressure generating liquid as a driving force for spraying the drug; It is detachably coupled to the open front of the main body, is provided with a drug receiving portion that communicates with the open front of the pressure chamber and accommodates the drug, and the drug contained in the drug receiving portion is supplied by pressure applied from the pressure chamber. a nozzle that sprays to the outside; Attachment and detachment means provided on the main body and the nozzle to detachably couple the nozzle to the main body; a fixed elastic membrane installed at an end of the pressure chamber and expanding in a direction to pressurize the drug in the drug receiving portion when the pressure of the pressure chamber increases; It includes a replacement elastic film that is installed opposite to the fixed elastic film in the nozzle, expands together with the fixed elastic film, and is detachable from the main body together with the nozzle.

A nozzle-replaceable needleless syringe according to another aspect of the present invention is a needleless syringe that repeatedly sprays a drug at high speed, comprising: a hollow main body; A solenoid coil wound around the outer peripheral surface of the main body, a moving magnetic body longly inserted into the inside of the main body in the longitudinal direction and moving forward by a magnetic force generated when a current is applied to the solenoid coil, and a moving magnetic body inside the main body A piston is inserted in the front and moves forward by the impact force applied by the kinetic magnetic body when the moving magnetic body moves forward, and is provided between the moving magnetic body and the piston, and provides an elastic force to the moving magnetic body in the direction in which the moving magnetic body moves backward. Injecting the drug, including an elastic member for a kinetic magnetic material that provides an elastic member and forward and backward driving means for repeating the forward and backward movements of the piston by repeating the supply and interruption of current to the solenoid coil at a preset cycle. a driving force generator that generates a driving force for; a nozzle that is detachably coupled to the main body, has a drug receiving portion that accommodates the drug, and sprays the drug contained in the drug receiving portion to the outside by the driving force; Attachment and detachment means provided on the main body and the nozzle to separate the nozzle from the main body or to couple the nozzle to the main body when the nozzle is replaced; a fixed elastic film that is fixedly installed inside the main body to cover an end of the piston and is flexible when the piston moves forward and backward; It is installed opposite to the end of the piston in the nozzle, is formed to be flexible when the piston moves forward and backward, and includes a replacement elastic membrane that is attached and detached from the main body together with the nozzle.

A nozzle-replaceable needleless syringe according to another aspect of the present invention is a needleless syringe that repeatedly sprays a drug at high speed, comprising: a hollow main body; A solenoid coil wound around the outer peripheral surface of the main body, a moving magnetic body longly inserted into the inside of the main body in the longitudinal direction and moving forward by a magnetic force generated when a current is applied to the solenoid coil, and a moving magnetic body inside the main body A piston is inserted in the front and moves forward by the impact force applied by the kinetic magnetic body when the moving magnetic body moves forward, and is provided between the moving magnetic body and the piston, and provides an elastic force to the moving magnetic body in the direction in which the moving magnetic body moves backward. Injecting the drug, including an elastic member for a kinetic magnetic material that provides an elastic member and forward and backward driving means for repeating the forward and backward movements of the piston by repeating the supply and interruption of current to the solenoid coil at a preset cycle. a driving force generator that generates a driving force for; a nozzle that is detachably coupled to the main body, has a drug receiving portion that accommodates the drug, and sprays the drug contained in the drug receiving portion to the outside by the driving force; Attachment and detachment means provided on the main body and the nozzle to separate the nozzle from the main body or to couple the nozzle to the main body when the nozzle is replaced; It includes a replacement piston that is detachably coupled to the end of the piston, is disposed inside the drug receiving portion, and presses the drug in conjunction with the piston when the piston moves forward and backward.

The nozzle-replaceable needleless syringe according to the present invention includes a main body provided with a driving force generator for pressurizing the drug, and a nozzle for spraying the drug, and the nozzle can be separated or combined from the main body, so that the nozzle can be separated or combined with the main body. Since only the nozzle can be replaced from the main body, there is an advantage in preventing secondary infection through the syringe.

In addition, since the structure of the attaching and detaching means for separating or attaching the nozzle to the main body is very simple and easy to use, convenience of use can be ensured.

In addition, by providing a sealing member between the main body and the nozzle, the drug can be prevented from getting on the main body, so the nozzle can be replaced while preventing contamination of the main body.

Figure 1 is a perspective view showing a nozzle-replaceable needleless syringe according to a first embodiment of the present invention.
Figure 2 is a cross-sectional view schematically showing the attachment and detachment means of the nozzle replaceable needleless syringe according to the first embodiment of the present invention.
Figure 3 is a cross-sectional view showing a state in which the nozzle is coupled to the main body using the attachment and detachment means shown in Figure 2.
Figure 4 is a cross-sectional view showing a method of coupling the main body and the nozzle using the attachment and detachment means shown in Figure 2.
Figure 5 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the second embodiment of the present invention.
Figure 6 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the third embodiment of the present invention.
Figure 7 is a perspective view showing a state in which the main body and nozzle of the needleless syringe shown in Figure 6 are separated.
Figure 8 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the fourth embodiment of the present invention.
Figure 9 is a perspective view showing the main body and nozzle of the needleless syringe shown in Figure 8 in a separated state.
Figure 10 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the fifth embodiment of the present invention.
Figure 11 is a cross-sectional view schematically showing a needleless syringe according to a sixth embodiment of the present invention.
Figure 12 is a cross-sectional view schematically showing the sealing member of the needleless syringe according to the seventh embodiment of the present invention.
FIG. 13 is a cross-sectional view schematically showing a state in which the nozzle and the replacement piston are separated from the main body shown in FIG. 12.
Figure 14 is a cross-sectional view schematically showing the sealing member of the needleless syringe according to the eighth embodiment of the present invention.
Figure 15 is a perspective view schematically showing a needleless syringe according to a ninth embodiment of the present invention.
Figure 16 is a perspective view schematically showing the drug ampoule of the needleless syringe shown in Figure 15 in a separated state.
Figure 17 is a perspective view schematically showing a needleless syringe according to the tenth embodiment of the present invention.
Figure 18 is a cross-sectional view schematically showing the configuration of the nozzle of the needleless syringe shown in Figure 17.
Figure 19 is a perspective view schematically showing a needleless syringe according to the 11th embodiment of the present invention.
Figure 20 is a side view schematically showing the nozzle of the needleless syringe shown in Figure 19 in a rotated state.
Figure 21 is a side view showing the nozzle of the needleless syringe shown in Figure 20 in a separated state.

Hereinafter, a needleless syringe according to embodiments of the present invention will be described with reference to the attached drawings.

Figure 1 is a perspective view showing a nozzle-replaceable needleless syringe according to a first embodiment of the present invention. Figure 2 is a cross-sectional view schematically showing the attachment and detachment means of the nozzle replaceable needleless syringe according to the first embodiment of the present invention. Figure 3 is a cross-sectional view showing a state in which the nozzle is coupled to the main body using the attachment and detachment means shown in Figure 2. Figure 4 is a cross-sectional view showing a method of coupling the main body and the nozzle using the attachment and detachment means shown in Figure 2.

Referring to Figures 1 to 4, the needleless syringe 10 according to the first embodiment of the present invention is a syringe that repeatedly injects drugs at high speed without an injection needle.

The needleless syringe 10 includes a main body 20, a nozzle 30, a nozzle cap 40, a drug ampoule 60, a sealing member 70, and a detachment means 100.

The main body 20 has an appearance that allows the user to hold it by hand, and is formed in a hollow shape. The interior of the main body 20 is provided with a driving force generator 50 that generates a driving force for spraying the drug at high speed.

The driving force generator 50 includes a pressure chamber 51 and an energy focusing unit.

The pressure chamber 51 is provided inside the main body 20 and is formed as a closed space to store a pressure-generating liquid.

The energy focusing unit is a device that concentrates and applies energy to the pressure generating liquid stored in the pressure chamber 51. The energy focusing unit may include a laser generator 52 that generates a laser beam and irradiates it to focus on the pressure generating liquid stored in the pressure chamber 51, and an electrode that passes electrical energy. Hereinafter, in this embodiment, the energy focusing unit will be described as an example of a laser generator.

The laser generator 52 includes a laser irradiation unit 52a and an objective lens 52b. The laser generator does not irradiate the laser beam directly to the drug solution, but irradiates it to the pressure generating liquid stored in the pressure chamber 51, causing the molecular structure of the pressure generating liquid to collapse, thereby generating a rapid gas bubble. I order it.

The pressure generating liquid used was degassed water to minimize residual bubbles before and after laser irradiation and injection, and various liquid substances such as polymer sol or gel such as alcohol or polyethylene glycol were used. You can use it. Additionally, when a water-soluble electrolyte such as salt is added to pure water, the energy required to collapse liquid molecules is reduced due to the ionization effect of the molecules, so more energy can be used for volume expansion.

The nozzle 30 is detachably coupled to the main body 20 and can be removed from the main body 20 after one use and replaced with a new nozzle.

The nozzle 30 includes a drug receiving portion 30a, which is a space inside which the drug is accommodated, and a spray passage 30b that communicates with the drug receiving portion 30a and sprays the drug to the outside.

For example, the nozzle 30 is coupled to the open front surface of the main body 20, and the end portion is formed to gradually decrease in cross-sectional area and has a cone shape with a sharp end.

A nozzle opening/closing valve 31 is installed in the injection passage 30b.

The nozzle opening/closing valve 31 is provided to open and close the communication hole between the drug receiving portion 30a and the injection passage 30b. The nozzle opening/closing valve 31 is pushed by the hydraulic pressure applied by the drug to open the communication hole, and is elastically restored when the hydraulic pressure is released to shield the communication hole. The nozzle unit opening/closing valve 31 is explained by way of example as a ball valve. That is, the nozzle opening/closing valve 31 includes a ball 31a installed in the communication hole, and is installed in the spray passage 30b to provide elastic force in the direction in which the ball 31a shields the communication hole. Includes an elastic member (31b). However, it is not limited to this, and the nozzle unit opening/closing valve 31 can use various valves such as duckbill valves, plate check valves, and electric control valves.

The nozzle cap 40 is formed to cover the nozzle 30, thereby preventing contamination of the nozzle 30.

Meanwhile, the sealing member 70 is installed on at least one of the main body 20 and the nozzle 30 to prevent the drug contained in the drug receiving portion 30a from leaking into the main body 20. .

The sealing member 70 includes a fixed elastic membrane 71 fixed to the main body 20 and is installed on the nozzle 30 and is removed together with the nozzle 30 when the nozzle 30 is replaced. It includes an elastic membrane (72).

The fixed elastic membrane 71 is installed to cover the open front surface of the pressure chamber 51 in the main body 20. The fixed elastic membrane 71 expands in the direction toward the drug receiving portion 30a by the pressure when the pressure of the pressure chamber 51 increases, and can be restored when the pressure of the pressure chamber 51 disappears. It is made of stretchable material.

The replacement elastic film 72 is installed opposite the fixed elastic film 71 in the nozzle 30 to cover the drug receiving portion 30a. The replacement elastic membrane 72 is made of an elastic material so that it can be expanded and restored together with the fixed elastic membrane 71.

As described above, in this embodiment, the sealing member 70 includes two elastic films, but the present invention is not limited to this, and it is also possible to include only the fixed elastic film 71.

The drug ampoule 60 is fitted and coupled to the ampoule mounting portion 61 formed on the outside of the main body 20. A drug supply hole is formed inside the main body 20 and the nozzle 30 to communicate with each other, and the ampoule mounting portion 61 communicates with the drug supply hole.

The attachment/detachment means 100 is provided on the main body 20 and the nozzle 30 to separate the nozzle 30 from the main body 20 when the nozzle 30 is replaced. ) and the nozzle 30 is coupled to the.

Hereinafter, in this embodiment, the attachment and detachment means 100 is a lever for combining the main body 20 and the nozzle 30 and maximizing the sealing force by bringing the nozzle 30 into close contact with the main body 20. The structure is explained with an example.

The attachment/detachment means 100 is centered around a guide protrusion 101 protruding outward from the outer peripheral surface of the main body 20, a coupling groove 102 formed on the outer peripheral surface of the nozzle 30, and a rotation axis 103a. It includes a coupling rotation lever 103 that couples the main body 20 and the nozzle 30 while rotating.

The guide protrusion 101 is described as being formed in a cylindrical shape as an example.

The coupling rotation lever 103 is formed in a lever shape that a user can hold and turn.

The coupling rotation lever 103 is formed in a protrusion or pin shape to be inserted into the coupling groove 102 of the nozzle 30 and has a rotation axis 103a that serves as a central axis during rotation, and the main body 20. A guide slit 104 is formed so that the guide protrusion 101 can be inserted and moved.

Referring to FIG. 4, the guide slit 104 is positioned at a position spaced apart from the rotation axis 103a by a predetermined distance d1 in the longitudinal direction of the coupling rotation lever 103. ) and a width direction movable slit (104a) formed to be long in the width direction and movable in the width direction by inserting the guide protrusion 101, and extending in the longitudinal direction from the width direction movement slit (104a) The guide protrusion 101 includes a longitudinal movable slit 104b formed to be movable in the longitudinal direction.

That is, the width direction movable slit 104a and the longitudinal direction movable slit 104b communicate with each other and are formed to be long in directions perpendicular to each other. The space between the width direction movable slit (104a) and the longitudinal direction movable slit (104b) is formed to be round.

The coupling rotation lever 103 rotates around the rotation axis 103a and varies the distance between the guide protrusion 101 and the rotation axis 103a according to the rotation angle, thereby attaching the nozzle 30 to the above. It can be brought into close contact with the main body 20.

The method of attaching and detaching the nozzle from the main body of the needleless syringe according to the first embodiment of the present invention configured as described above will be described as follows.

First, referring to FIGS. 2 and 4A, the coupling rotation lever 103 is coupled to the main body 20 and the nozzle 30.

The guide protrusion 101 of the main body 20 is inserted into the longitudinal movement slit 104b, and the rotation axis 103a of the coupling rotation lever 103 is inserted into the coupling groove 102 of the nozzle 30. ) is inserted.

At this time, as shown in FIG. 4A, the coupling rotation lever 103 is coupled while rotated counterclockwise with respect to the longitudinal direction of the main body 20.

Thereafter, the coupling rotation lever 103 is rotated clockwise around the rotation axis 103a.

Referring to FIGS. 4B and 4C, when the coupling rotation lever 103 is rotated, the guide protrusion 101 moves along the longitudinal movement slit 104b and the width direction movement slit 104a. , the coupling rotation lever 103 serves to lift the nozzle 30 in a direction to bring it into close contact with the main body 20.

That is, as the rotation angle of the coupling rotation lever 103 increases, the distance between the guide protrusion 101 and the rotation shaft 103a decreases, so that the main body 20 and the nozzle 30 come into closer contact with each other. This can improve sealing power.

The first distance d1 between the guide protrusion 101 and the rotation axis 103a in FIG. 4C is shorter than the second distance d2 between the guide protrusion 101 and the rotation axis 103a in FIG. 4B.

When separating the nozzle 30 from the main body 20, the coupling rotation lever 103 is rotated counterclockwise to increase the distance between the guide protrusion 101 and the rotation shaft 103a. , the coupling rotation lever 103 can be removed from the guide protrusion 101.

As described above, in this embodiment, the nozzle 30 can be separated from the main body 20 and the nozzle 30 can be replaced, so the main body equipped with the driving force generator is repeatedly reused, but the nozzle 30 can be replaced by removing the nozzle 30 from the main body 20. Since only the nozzle 30 that contacts the back can be replaced, contamination between patients can be prevented.

Therefore, when the nozzle 30 is coupled to the main body 20, the coupling rotation lever 103 is used as a lever to bring the main body 20 and the nozzle 30 into close contact, thereby forming the nozzle 30. When attaching or detaching, sealing force can be secured.

Figure 5 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the second embodiment of the present invention.

Referring to Figure 5, the attachment/detachment means 120 of the needleless syringe according to the second embodiment of the present invention includes a coupling piece 121 fixedly installed inside the main body 20, and an outer surface of the main body 20. It includes a slider 122 movably coupled to the nozzle 30 and a hook coupling groove 123 formed on the outer peripheral surface of the nozzle 30, so that the user can push or pull the slider 122 to open the nozzle 30. Since the configuration for combining or separating is different from the first embodiment, and the remaining configuration and operation are similar to the first embodiment, a detailed description of similar configurations will be omitted and the differences will be explained in detail.

A plurality of the coupling pieces 121 are provided inside the main body 20, spaced apart from each other at a predetermined distance along the circumferential direction, and are formed to contract or expand according to the forward and backward movement of the slider 122.

The coupling piece 121 is formed such that one side is fixed to the inside of the main body 20 and the other side is elastically opened toward the outside of the main body 20.

A hook 121a is formed on the other end of the coupling piece 12.

The slider 122 is formed in the shape of a hollow sleeve and is coupled to enable sliding movement along the outer surface of the main body 20.

The slider 122 is formed to surround the outside of the coupling pieces 121, and when moving forward, presses the coupling pieces 121 in the inner direction of the main body 20 to move the coupling pieces 121. It is retracted, and when moving backward, the pressure on the coupling pieces 121 is released, so that the coupling pieces 121 can elastically open.

In this embodiment, the slider 122 is manually moved by sliding or moving by the operator directly pushing or pulling the slider 122. However, it is not limited to this, and an elastic member (not shown) is installed to provide elastic force in the direction in which the slider 122 moves forward, so that the worker pulls the slider 122 toward the main body 20 and moves it backward. , Of course, it is also possible to elastically restore and move forward when there is no pulling force.

The hook coupling groove 123 is formed so that the hook 121a is caught on the outer peripheral surface of the nozzle 30. The hook coupling groove 123 includes a seating portion 123a on which the hook 121a is seated, and a locking protrusion 123b on which the hook 121a is caught.

The method of attaching and detaching the nozzle using the attaching and detaching means according to the second embodiment of the present invention configured as described above will be described as follows.

Referring to FIG. 5A, when the nozzle 30 is separated from the main body 20, the slider 122 is moved backward.

When the slider 122 moves backward, the engaging pieces 122 are spread outward, thereby disengaging the hook 121a from the hook engaging groove 123.

A new nozzle can be reconnected to the main body 20 while the coupling pieces 122 are spread outward.

Referring to Figure 5b, after inserting the nozzle 30 between the coupling pieces 122, the slider 122 is moved forward.

When the slider 122 moves forward, the connecting pieces 122 retract inward and the hook 121a is coupled to the hook defect groove 123.

As described above, in the second embodiment of the present invention, the nozzle 30 can be replaced by pushing or pulling the slider 122, so replacement of the nozzle 30 is easy.

Figure 6 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the third embodiment of the present invention. Figure 7 is a perspective view showing the main body and nozzle of the needleless syringe shown in Figure 6 in a separated state.

Referring to Figures 6 and 7, the attachment and detachment means 130 of the needleless syringe according to the third embodiment of the present invention includes a push button 131 provided on the outer peripheral surface of the main body 20, and the button ( 131), including a hook 132 connected to the nozzle 30 and a hook defect groove 133 into which the hook 132 is coupled, when the user presses or releases the push button 131. Therefore, the configuration for separating or combining the nozzle 30 is different from the first embodiment, and the remaining configuration and operation are similar to the first embodiment, so a detailed description of the similar configuration will be omitted and the differences will be discussed. It will be explained in detail mainly.

The button 131 protrudes outward from the outer peripheral surface of the main body 20 and is installed to be pressable inward.

The button 131 is mounted on the main body 20 and a button mounting groove 131a is formed to allow movement in the inner direction.

The hook 132 is formed at the end of the button 131 and protrudes in a direction toward the nozzle 30, and is coupled to the hook coupling groove 133 of the nozzle 30.

The hook coupling groove 133 is formed on the surface of the nozzle 30 facing the main body 20. The hook coupling groove 133 is formed to be larger in size than the hook 132, so that the hook 132 is inserted while the button 131 is pressed, and the hook 132 is inserted when the button 131 is released. A locking protrusion (133a) is formed so that (132) is caught.

In addition, the attachment and detachment means 130 is formed on the main body 20 and a coupling protrusion 134 protruding from the nozzle 30 toward the main body 20 on the surface facing the main body 20. It may further include a coupling groove 135 formed into which the coupling protrusion 134 is inserted.

Figure 8 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the fourth embodiment of the present invention. Figure 9 is a perspective view showing the main body and nozzle of the needleless syringe shown in Figure 8 in a separated state.

Referring to Figures 8 and 9, the attachment and detachment means 140 of the needleless syringe according to the fourth embodiment of the present invention includes a pivoting groove ( 141) and a rotating protrusion 142 that protrudes outward from the outer peripheral surface of the nozzle 30 and is coupled to the rotating groove 141, allowing the user to separate or combine the nozzle 30 by holding and rotating it. Since the configuration is different from the first embodiment, and the remaining configuration and operation are similar to the first embodiment, a detailed description of the similar configuration will be omitted and a detailed description will be made focusing on the differences.

The pivoting protrusions 142 may be formed in plural numbers spaced apart from each other at a predetermined distance along the circumferential direction on the outer peripheral surface of the nozzle 30. In this embodiment, two are formed as an example.

The rotating protrusion 142 is inserted into the rotating groove 141 when the nozzle 30 is inserted into the nozzle insertion hole 20a, and when the nozzle 30 is rotated in the inserted state, the nozzle insertion hole 20a ) and is prevented from coming off.

In the attachment/detachment means according to the fourth embodiment of the present invention configured as described above, the nozzle 30 is inserted into the nozzle insertion hole 20a and then rotated by a predetermined angle so that the rotating protrusion 142 is inserted into the nozzle insertion hole (20a). Combine it so that it catches on 20a).

Meanwhile, when separating the nozzle 30, the nozzle 30 can be rotated by a predetermined angle so that the pivoting protrusion 142 is positioned in the pivoting groove 141 and then separated.

Figure 10 is a cross-sectional view schematically showing the attachment and detachment means of the needleless syringe according to the fifth embodiment of the present invention.

The attachment and detachment means 150 of the needleless syringe according to the fifth embodiment of the present invention includes a coupling piece 151 that is rotatably coupled to the main body 20 and is formed to open toward the outside of the main body 20 when held and pressed. ), an elastic member provided between the main body 20 and the coupling piece 151 to restore the coupling piece 151 to its original position, and a hook coupling groove 152 formed in the nozzle 30. , the configuration in which the user separates the nozzle 30 by holding and pressing the coupling pin 151 is different from the first embodiment, and the remaining configuration and operation are similar to the first embodiment, so similar configuration A detailed description will be omitted and a detailed description will be given focusing on the differences.

The coupling piece 151 is coupled to the main body 20 by a rotating shaft 155. The coupling piece 151 opens toward the outside of the main body 20 when one end is held and pressed, and is restored to its original position by the restoring force of the elastic member when the pressure is released. The coupling piece 151 has a clamp structure.

The coupling pieces 151 may be formed in plural numbers along the circumferential direction on the outer peripheral surface of the main body 20. In this embodiment, it will be described as an example that two are formed so that the user can easily hold and press them.

A hook 153 is formed at the end of the coupling piece 151.

The elastic member may be a torsion spring (not shown) or the like.

The method of attaching and detaching the nozzle using the attaching and detaching means according to the second embodiment of the present invention configured as described above will be described as follows.

Referring to Figure 10a, when the nozzle 30 is separated, if the coupling piece 151 is held and pressed, the coupling piece 151 rotates and spreads outward.

When the coupling pieces 151 rotate, the hook 153 and the hook coupling groove 152 are disconnected.

A new nozzle can be reconnected to the main body 20 while the coupling pieces 151 are spread outward.

Referring to Figure 10b, after inserting the nozzle 30 between the coupling pieces 151, the force holding and pressing the coupling pieces 151 is released.

When the coupling piece 151 is released, the coupling piece 151 is elastically restored to its original position by the torsion spring (not shown).

As the connecting pieces 151 are retracted inward, the hook 153 is coupled to the hook defect groove 152.

As described above, in the fifth embodiment of the present invention, the nozzle 30 can be replaced by the user holding and pressing the coupling piece 151, making it easy to replace the nozzle 30.

Figure 11 is a cross-sectional view schematically showing a needleless syringe according to a sixth embodiment of the present invention.

Referring to Figure 11, in the needleless syringe 200 according to the sixth embodiment of the present invention, the driving force generator 210 that generates the driving force for spraying the drug includes a solenoid coil 211 and a moving magnetic body 212. , a piston 213, an elastic member 214 for a moving magnetic material, and a forward/backward driving means, and the attachment/detachment means 160 includes a push button 161, a hook 162, and a hook coupling groove 163. , the drug is sprayed according to the forward and backward movement of the piston 213, and the user presses or releases the push button 161 to separate or combine the nozzle 30. Since the rest of the configuration and operation are similar to the first embodiment, detailed description of similar configurations will be omitted and the differences will be explained in detail.

In the needleless syringe 200 according to the sixth embodiment of the present invention, the moving magnetic body 212 moves forward by the magnetic force generated by the solenoid coil 211, and the moving magnetic body 212 moves the piston. It is an impact type syringe that moves the piston 213 forward by colliding with (213).

The driving force generating means according to the sixth embodiment of the present invention is applicable to all of the first to fifth embodiments.

The main body 20 includes a hollow first cylinder 21 and a second cylinder 22 screwed to the front of the first cylinder 21.

The solenoid coil 211 is a coil wound on the front side of the outer circumference of the first cylinder 21 of the main body 20 and to which current is applied when the piston 213 moves forward. The solenoid coil 211 serves to move the moving magnetic body 212 forward by generating magnetic force in the direction in which the moving magnetic body 212 moves forward when current is applied.

The piston 213 is inserted longitudinally into the main body 20 and serves to push the drug contained in the drug receiving portion 30a.

The piston 213 is described as being provided separately from the moving magnetic body 212 inside the main body 20, but the piston 213 is not limited to this and can of course be formed integrally with the moving magnetic body 212.

The moving magnetic body 212 is not a permanent magnet, but is made of a material that temporarily has magnetism due to a magnetic field generated when current is applied to the solenoid coil 211, and the magnetism disappears when the external magnetic field disappears. The moving magnetic material 212 is explained by way of example as an iron core.

The elastic member 214 for the moving magnetic body is provided long in the longitudinal direction of the main body 20 between the moving magnetic body 214 and the piston 213 inside the main body 20. The elastic member 214 for the moving magnetic body provides elastic force to the moving magnetic body 213 in the direction in which the moving magnetic body 213 moves backward.

The forward and backward driving means may repeat the supply and cutoff of current to the solenoid coil 211 at a preset cycle, thereby repeating the forward and backward movements of the piston 213 multiple times.

The forward and backward driving means includes a current supply unit (not shown) and an elastic member 215 for the piston.

The current supply unit (not shown) applies current to the solenoid coil 211 when the piston 213 moves forward to move the moving magnetic body 212 forward. When the piston 213 moves backward, current is blocked in the solenoid coil 211.

The elastic member 215 for the piston is an elastic member that provides elastic force to the piston 213 in a direction in which the piston 213 moves backward when the current supply from the current supply unit is cut off. The elastic member 215 for the piston includes a second coil spring 215a and a third coil spring 215b coupled to the outer peripheral surface of the piston 213.

The needleless syringe 200 may further include a cooling chamber 216 that cools the heat generated by the solenoid coil 211 through a cooling fluid.

The cooling chamber 216 may be detachably coupled to the outside of the main body 20.

Meanwhile, the needleless syringe 200 according to the sixth embodiment of the present invention is provided in at least one of the main body 20 and the nozzle 30, and the drug receiving portion 30a of the nozzle 30 It further includes a sealing member 220 that prevents the drug contained in from leaking into the main body 20.

The sealing member 220 is fixedly installed inside the main body 20 and includes a fixed elastic film 217 arranged to cover the end of the piston 213, and fixedly installed inside the nozzle 30. and includes a replacement elastic film 218 installed opposite to the fixed elastic film 217.

The fixed elastic membrane 217 may be fitted and coupled to the inner peripheral surface of the main body 20, or may be fixedly installed on the inner peripheral surface of the main body 20 by adhesive or bonding methods.

The fixed elastic membrane 217 is made of a material that can be stretched when the piston 213 moves forward and backward. The fixed elastic membrane 217 is made of an elastic material so that it is stretched forward by the piston 213 when the piston 213 moves forward and is restored when the piston 213 moves backward. In this embodiment, the fixed elastic film 217 is explained by way of example as a rubber film.

The replacement elastic membrane 218 can be fitted and coupled to the inner peripheral surface of the drug receiving portion 30a in the nozzle 30, and is fixed to the inner peripheral surface of the drug receiving portion 30a by adhesive or bonding. It is also possible to install it. In addition, the replacement elastic membrane 218 may be fastened and fixed to an elastic membrane holder provided on the inner peripheral surface of the drug receiving portion 30a, so that frictional force is reduced when the replacement elastic membrane 218 expands and contracts.

The replacement elastic membrane 218 can prevent the drug from being directly applied to the fixed elastic membrane 217, and can be replaced when the nozzle 30 is replaced.

The replacement elastic membrane 218 is made of a material that can be stretched when the piston 213 moves forward and backward. The replacement elastic membrane 218 is made of an elastic material so that it is stretched forward by the piston 213 when the piston 213 moves forward and is restored when the piston 213 moves backward. In this embodiment, the replacement elastic film 218 is explained as an example of a rubber film.

Meanwhile, the attachment and detachment means 160 is configured to allow the user to separate or combine the nozzle 30 by pressing or releasing the button 161.

The button 161 protrudes outward from the outer peripheral surface of the main body 20 and is installed to be pressed inward.

The button 161 is mounted on the main body 20 and a button mounting groove is formed to allow movement in the inner direction.

The hook 162 is formed at the end of the button 161 and protrudes in a direction toward the nozzle 30, and is coupled to the hook coupling groove 163 of the nozzle 30.

The hook coupling groove 163 is formed on the surface of the nozzle 30 facing the main body 20. The hook coupling groove 163 is formed to be larger in size than the hook 162, so that the hook 162 is inserted while the button 161 is pressed, and when the button 161 is released, the hook 162 is inserted. A locking protrusion is formed so that (162) is caught.

In addition, the attachment and detachment means 160 is formed on the main body 20 and a coupling protrusion 164 protruding from the nozzle 30 toward the main body 20 on the surface facing the main body 20. It may further include a coupling groove 165 formed into which the coupling protrusion 164 is inserted.

In the present embodiment, the attachment and detachment means 160 is described as an example in which the user presses or releases the push button 161 to separate or combine the nozzle 30, but is not limited to this. Any of the attachment and detachment means of the first to fifth embodiments can be applied.

The method of attaching and detaching the nozzle of the needleless syringe according to the sixth embodiment of the present invention configured as described above is as follows.

When the nozzle 30 is coupled to the main body 20 and the user presses the button 161, the button 161 moves inward to form the hook 162 and the hook coupling groove 163. ) is released.

When the nozzle 30 is pulled in a direction away from the main body 20 while pressing the button 161, the engaging protrusion 164 is separated from the engaging groove 165, and the nozzle 30 is separated from the engaging groove 165. It can be separated from the main body 20.

At this time, the replacement elastic membrane 218 fixed to the nozzle 30 is also attached and detached.

Afterwards, a new nozzle can be coupled to the main body 20.

As described above, in the sixth embodiment of the present invention, the fixed elastic film 217 is provided at the end of the piston 213, and the inside of the nozzle 30 is provided with the fixed elastic film 217 corresponding to the fixed elastic film 217. By providing the replacement elastic membrane 218, even if the piston 213 moves forward to the drug receiving portion 30a of the nozzle 30 and pressurizes the drug, it is attached to the piston 213 and the fixed elastic membrane 217. Direct application of the drug can be prevented.

Therefore, if only the nozzle 30 is replaced, the main body 20 and the piston 213 can be repeatedly reused.

Figure 12 is a cross-sectional view schematically showing the sealing member of the needleless syringe according to the seventh embodiment of the present invention. FIG. 13 is a cross-sectional view schematically showing a state in which the nozzle and the replacement piston are separated from the main body shown in FIG. 12.

Referring to Figures 12 and 13, the needleless syringe according to the seventh embodiment of the present invention has a sealing member detachably coupled to the end of the piston 271 and a replacement piston disposed in the drug receiving portion 30a. (272) is different from the sixth embodiment, and the remaining configuration and operation are similar to the first embodiment, so a detailed description of similar configurations will be omitted and a detailed explanation will be given focusing on the differences.

The replacement piston 272 is screwed to the end of the piston 271 and is disposed within the drug receiving portion 30a. An O-ring, etc. may be provided for sealing between the outer peripheral surface of the replacement piston 272 and the drug receiving portion 30a.

A screw engaging portion 272a having a male thread is protruding from the replacement piston 272, and a screw engaging groove 271a having a female thread is formed on the piston 271 to allow the screw engaging portion 272a to be screwed into the replacement piston 272. do.

The replacement piston 272 can move forward and backward within the drug receiving portion 30a in conjunction with the piston 271 when the piston 271 moves forward and backward. The replacement piston 272 directly pressurizes the drug contained in the drug receiving portion 30a.

In the needleless syringe configured as above, the nozzle 30 can be first separated from the main body 20, and then the replacement piston 272 can be separated from the piston 271.

Accordingly, the drug can be prevented from being directly deposited on the piston 271.

In the seventh embodiment of the present invention, the attaching and detaching means includes a push button 161, a hook 162, a hook engaging groove 163, an engaging protrusion 164, and an engaging groove 165, so that the user presses the button. Although the nozzle 30 is separated or combined by pressing or releasing the button 161 as an example, the nozzle 30 is not limited to this, and any of the attachment and detachment means of the first to fifth embodiments can be used. Applicable.

Figure 14 is a cross-sectional view schematically showing the sealing member of the needleless syringe according to the eighth embodiment of the present invention.

Referring to FIG. 14, the needleless syringe according to the eighth embodiment of the present invention has a sealing member detachably coupled to the end of the piston 281 and a replacement piston 282 disposed in the drug receiving portion 30a. And, the replacement piston 282 is different from the seventh embodiment in that it is inserted and coupled to the piston 281, and the remaining configuration and operation are similar to the first embodiment, so detailed information about similar configurations is provided. The explanation will be omitted and the differences will be explained in detail.

The replacement piston 282 has an expansion portion 282a whose cross-sectional area expands in the direction toward the drug receiving portion, and a coupling groove 281a extending from the expansion portion 282 and formed on the piston 281. It includes an insertion portion 282b that is inserted.

The replacement piston 282 can move forward and backward within the drug receiving portion 30a in conjunction with the piston 281 when the piston 281 moves forward and backward. The replacement piston 282 directly pressurizes the drug contained in the drug receiving portion 30a.

In the needleless syringe configured as above, the nozzle 30 can be first separated from the main body 20, and then the replacement piston 282 can be separated from the piston 281.

The replacement piston 282 has a simple structure and can be sealed between the drug receiving portion 30a and directly pressurizes the drug, thereby preventing the drug from being directly deposited on the piston 271.

In the eighth embodiment of the present invention, the attaching and detaching means includes a push button 161, a hook 162, a hook engaging groove 163, an engaging protrusion 164, and an engaging groove 165, so that the user presses the button. Although the nozzle 30 is separated or combined by pressing or releasing the button 161 as an example, the nozzle 30 is not limited to this, and any of the attachment and detachment means of the first to fifth embodiments can be used. Applicable.

Figure 15 is a perspective view schematically showing a needleless syringe according to a ninth embodiment of the present invention. Figure 16 is a perspective view schematically showing the drug ampoule of the needleless syringe shown in Figure 15 in a separated state.

15 and 16, in the needleless syringe according to the ninth embodiment of the present invention, the drug ampoule 60 is mounted on the ampoule mounting portion 20b formed on the outer peripheral surface of the main body 20, and the ampoule mounting portion (20b) differs from the first embodiment in that the ampoule cover 61 is installed, and the remaining configuration and operation are similar to the first embodiment, so a detailed description of the similar configuration will be omitted and the differences will be focused on. It is explained in detail.

The drug ampoule 60 may be formed in various shapes, such as a syringe, a refill container, and a refill bag, and any drug ampoule 60 can be applied as long as it is provided with an injection port through which the drug can be injected into the drug receiving portion 30a.

The ampoule mounting portion 20b will be described as an example of a groove formed concavely on the upper outer peripheral surface of the main body 20 so that the drug ampoule 60 is inserted.

Inside the main body 20, a first drug supply hole is formed into which the injection port 60a of the drug ampoule 60 coupled to the ampoule mounting portion 20b is inserted, and the drug receiving portion 30a contains the drug. A second drug supply hole may be formed in communication with the first drug injection hole.

The ampoule cover 61 is rotatably installed on the ampoule mounting portion 20b and is formed to cover at least a portion of the drug ampoule 60.

Therefore, the ampoule cover 61 can be opened when mounting or detaching the drug ampoule 60, and after mounting the drug ampoule 60, it covers the drug ampoule 60, thereby forming the drug ampoule (60). 60) can be prevented from breaking away.

The ampoule mounting portion 20b and the ampoule cover 61 of the needleless syringe according to the ninth embodiment of the present invention are applicable to all of the first to eighth embodiments.

Figure 17 is a perspective view schematically showing a needleless syringe according to the tenth embodiment of the present invention. Figure 18 is a cross-sectional view schematically showing the configuration of the nozzle of the needleless syringe shown in Figure 17.

Referring to Figures 17 and 18, the needleless syringe according to the tenth embodiment of the present invention includes a replacement piston 300 in which a sealing member is provided to move forward and backward inside the nozzle 30, and the It is different from the sixth embodiment in that it includes an elastic member 310 for a replacement piston that is provided between the nozzle 30 and the replacement piston 300 and provides elastic force in the direction in which the replacement piston 300 moves backward. Since the remaining configuration and operation are similar to the sixth embodiment, a detailed description of similar configurations will be omitted and the differences will be explained in detail.

The replacement piston 300 serves to seal between the main body 20 and the nozzle 30. The replacement piston 300 is provided separately from the piston 213 and disposed inside the nozzle 30, and is separated when the nozzle 30 is separated from the main body 20.

The replacement piston 300 is pressurized when the piston 213 moves forward and moves forward to pressurize the drug.

A guide protrusion 301 is formed to protrude on the outer peripheral surface of the replacement piston 300, and the guide protrusion 301 is inserted into the inner peripheral surface of the nozzle 30, and a guide groove ( 302) is formed.

The elastic member 310 for the replacement piston is provided between the guide groove 302 and the guide protrusion 301, and provides elastic force to the replacement piston 300 to move backward when the piston 213 moves backward. It is a spring that does.

Since the replacement piston 300 is separated when the nozzle 30 is separated from the main body 20, the work of separating it from the piston 213 can be omitted.

In addition, in the tenth embodiment of the present invention, an ampoule mounting portion 320 on which a drug ampoule 60 is mounted is formed on the outer peripheral surface of the nozzle 30. A drug supply hole 321 communicating with the drug receiving portion 30a is formed inside the ampoule mounting portion 320. However, it is not limited to this, and of course it is also possible to apply the ampoule mounting part of the ninth embodiment.

In addition, in the tenth embodiment of the present invention, the ampoule mounting portion 320 is formed to protrude outwardly on the outer peripheral surface of the nozzle 30, and the ampoule mounting portion 320 is inserted into the main body 20 in the axial direction. It will be explained as an example that the fastening hole 330 is formed so as to be caught in the circumferential direction.

Therefore, when the nozzle 30 is inserted into the open front of the main body 20, the ampoule mounting portion 320 is fitted into the fastening hole 330, so that the nozzle 30 and the main body 20 Can be combined to be detachable.

However, it is not limited to this, and of course it is also possible to apply the attaching and detaching means of the first to fifth embodiments.

Meanwhile, Figure 19 is a perspective view schematically showing a needleless syringe according to the 11th embodiment of the present invention. Figure 20 is a side view schematically showing the nozzle of the needleless syringe shown in Figure 19 in a rotated state. Figure 21 is a side view showing the nozzle of the needleless syringe shown in Figure 20 in a separated state.

19 to 21, the attachment and detachment means 500 of the needleless syringe according to the 11th embodiment of the present invention includes a coupling pin 510 formed on the nozzle 30 and the main body 20. and includes a coupling groove 520 that is coupled after the coupling pin 510 is slid, and the coupling groove 520 includes an axial guide groove 521 and a rotational coupling groove 522. It is different from the first embodiment, and the remaining configuration and operation are similar to the first embodiment, so it will be described in detail focusing on the different configurations.

The coupling pin 510 is provided to protrude from the outer peripheral surface of the nozzle 30. The coupling pin 510 may be detachably screwed to the nozzle 30. A plurality of coupling pins 510 may be formed at positions spaced apart from each other at a predetermined distance on the outer peripheral surface of the nozzle 30. In this embodiment, it is explained as an example that two coupling pins 510 are formed.

The coupling groove 520 is formed on the side of the main body 20 and is bent so that the coupling pin 510 is inserted in the axial direction of the main body 20 and then inserted in the rotational direction of the nozzle 30. It is formed into a shape. That is, the coupling groove 520 will be described as being formed in an L shape as an example.

The coupling groove 520 includes the axial guide groove 521 and the rotational guide groove 522.

The axial guide groove 521 is formed on the side of the main body 20, and when the nozzle 30 is inserted into the main body 20 in the axial direction, the coupling pin 510 is connected to the axis. It is a groove formed long in the axial direction to enable sliding movement in that direction. The axial guide groove 521 has a constant cross-sectional area. The width of the axial guide groove 521 may be equal to or larger than the diameter of the coupling pin 520.

The rotation direction coupling groove 522 is a groove formed on the side of the main body 20, communicates with the axial guide groove 521, and is long in the rotation direction of the nozzle 30 perpendicular to the axial direction. . The rotation direction coupling groove 522 is formed so that when the nozzle 30 inserted into the main body 20 is rotated, the coupling pin 510 slides in the rotation direction and then becomes caught.

The cross-sectional area of the rotation direction coupling groove 522 is not constant. That is, the rotation direction coupling groove 522 is in communication with the axial guide groove 521 and is formed with a first width (W1) smaller than the diameter (D) of the coupling pin 510, The coupling pin 510 is formed of a separation prevention portion 522a that prevents the pin 510 from being separated, and a second width W2 that communicates with the separation prevention portion 522a and is larger than the first width W1. ) includes a seating portion 522b on which is seated. That is, the first width W1 of the separation prevention portion 522a is smaller than the diameter D of the coupling pin 510. The second width (W2) of the seating portion (522b) is greater than the first width (W1) and is equal to or equal to the diameter (D) of the coupling pin 510. formed larger.

The first width W1 of the separation prevention part 522a is formed to be smaller than the diameter of the coupling pin 510, so that the coupling pin 510 is connected to the separation prevention part only when the user applies more than a predetermined force. (522a) can be passed.

As described above, in this embodiment, the width of the rotation direction coupling groove 522 is formed differently depending on the position, so that when the nozzle 30 is coupled to the main body 20, the coupling pin 510 is It is possible to prevent deviation in the direction toward the axial guide groove 521. However, it is not limited to this, and it is of course possible to form a locking protrusion (not shown) on the inner surface of the rotation direction coupling groove 522.

A method of separating the nozzle 30 from the main body 20 in the needleless syringe according to the 11th embodiment of the present invention configured as above will be described as follows.

Figure 19 shows a state in which the nozzle 30 is coupled to the main body 20.

Referring to FIG. 19, when the nozzle 30 is coupled to the main body 20 and the nozzle 30 is rotated to the right, the coupling pin 510 moves into the rotation direction coupling groove 522. It slides along.

At this time, the coupling pin 510 may pass through the separation prevention portion 522a due to the force with which the user rotates the nozzle 30.

20 and 21, when the coupling pin 510 passes through the separation prevention part 522a and is located in the axial guide groove 521, the nozzle 30 is separated from the main body 20. pull it

When the nozzle 30 is pulled from the main body 20, the coupling pin 510 slides along the axial guide groove 521 and can be separated from the axial guide groove 521.

Accordingly, the nozzle 30 can be separated from the main body 20.

Meanwhile, a method of coupling the nozzle 30 to the main body 20 will be described as follows.

The nozzle 30 is inserted into the main body 20, and the coupling pin 510 is inserted into the axial guide groove 521.

After inserting the coupling pin 510 into the axial guide groove 521, the nozzle 30 is rotated to the left.

When the nozzle 30 is rotated, the coupling pin 510 slides along the rotation direction coupling groove 522 and is seated and fixed on the seating portion 522b of the rotation direction coupling groove 522.

At this time, the coupling pin 510 may pass through the separation prevention part 522a and be positioned in the seating part 522b due to the force with which the user rotates the nozzle 30.

After the nozzle 30 is coupled to the main body 20, the coupling pin 510 does not pass through the separation prevention portion 522a even if vibration or impact occurs in the driving force generating portion.

Accordingly, the nozzle 30 and the main body 20 can be coupled more easily and maintained more firmly.

On the other hand, the needleless syringe equipped with a detachable means according to the 11th embodiment of the present invention includes the driving force generator of the 6th embodiment, the sealing member of the 7th and 8th embodiments, and the ampoule mounting part of the 9th embodiment. , the configuration of the nozzle part of the tenth embodiment is applicable.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

20: body 30: nozzle
30a: Drug receiving portion 30b: Spray passage
40: nozzle cap 50: driving force generator
51: pressure chamber 52: laser generator
60: Drug ampoule 61: Ampoule cover
70: Sealing member 71: Fixed elastic membrane
72: Replacement elastic membrane 100.120.130.140.150: Detachment means
210: Driving force generator 211: Solenoid coil
212: moving magnetic body 213: piston
214: Elastic member for moving magnetic material 220: Sealing member
217 Fixed elastic membrane 218: Replacement elastic membrane
272,282,300: Replacement piston 310: Elastic member for replacement piston

Claims (24)

In a needleless syringe that repeatedly sprays drugs at high speed,
a main body provided with a driving force generator that generates a driving force for spraying the drug;
a nozzle that is detachably coupled to the main body, has a drug receiving portion that accommodates the drug, and sprays the drug contained in the drug receiving portion to the outside by the driving force;
A nozzle-replaceable needleless syringe including a attachment/detachment means provided on the main body and the nozzle to separate the nozzle from the main body or to couple the nozzle to the main body when the nozzle is replaced. In claim 1,
The attachment and detachment means are,
a plurality of coupling pieces, one side of which is fixed to the main body, the other side of which is elastically opened toward the outside of the main body, and a hook formed on the other end;
A hollow slider that is slidably coupled to the outer peripheral surface of the main body in the axial direction to press the coupling pieces toward the inside of the main body when moving forward and to release the pressure on the coupling pieces when moving backward;
Including a hook coupling groove formed on the outer peripheral surface of the nozzle and engaged with the hook of the coupling pieces when the slider presses the coupling pieces,
A nozzle-replaceable needleless syringe in which the nozzle is inserted into a nozzle insertion hole formed in the main body when the slider moves backward, and the hook is coupled to the hook coupling groove when the slider moves forward. In claim 1,
The attachment and detachment means are,
a button provided on the outer peripheral surface of the main body and pressable toward the inside;
a hook connected to the button and protruding in a direction toward the nozzle;
A nozzle replaceable needleless syringe comprising a hook coupling groove formed on the nozzle so that the hook is inserted while the button is pressed and the hook is caught and coupled when the button is released. In claim 1,
The attachment and detachment means are,
a coupling protrusion formed to protrude toward the main body on a surface of the nozzle facing the main body;
A nozzle-replaceable needleless syringe further comprising a coupling groove formed in the main body so that the coupling protrusion is press-fitted. In claim 1,
The attachment and detachment means are,
a pivoting groove formed on the outer periphery of the nozzle insertion hole formed on the front of the main body;
Including a rotating protrusion that protrudes outward from the outer peripheral surface of the nozzle, is inserted into the rotating groove when the nozzle is inserted into the nozzle insertion hole, and is caught and coupled to the nozzle insertion hole when the nozzle is rotated,
A nozzle-replaceable needle-less syringe in which the nozzle is inserted into the nozzle insertion hole and then rotated at a predetermined angle to couple it. In claim 1,
The attachment and detachment means are,
A coupling piece rotatably coupled to the main body, formed to spread outward toward the outside of the main body when held and pressed, and having a hook formed at an end;
an elastic member provided between the main body and the coupling piece to restore the coupling piece to its original position;
A nozzle replaceable needleless syringe formed on the outer peripheral surface of the nozzle and including a hook coupling groove formed to engage and engage the hook. In claim 1,
The attachment and detachment means are,
A guide protrusion formed on the outer peripheral surface of the main body to protrude outward,
A coupling groove formed on the outer peripheral surface of the nozzle,
A rotating shaft inserted into the coupling groove, a width direction movable slit formed to be long in the width direction at a position spaced apart from the rotation axis by a set distance in the longitudinal direction and movable in the width direction by inserting the guide protrusion, and the width direction. It includes a rotary lever for engagement including a longitudinal movable slit extending longitudinally from the movable slit so that the guide protrusion can move in the longitudinal direction,
The coupling rotation lever rotates around the rotation axis and varies the distance between the guide protrusion and the rotation axis according to the rotation angle, thereby coupling the nozzle to the front of the main body while being in close contact with the nozzle replaceable needleless syringe. In claim 1,
The attachment and detachment means are,
A coupling pin protruding from the outer peripheral surface of the nozzle,
an axial guide groove formed on a side of the main body and long in the axial direction so that the coupling pin can slide in the axial direction when the nozzle is axially inserted into the main body;
It communicates with the axial guide groove on the side of the main body and is formed to be long in the rotational direction of the nozzle perpendicular to the axial direction, so that when the nozzle inserted into the main body is rotated, the coupling pin moves in the rotational direction. A nozzle-replaceable needleless syringe including a rotation direction coupling groove formed to be caught after sliding. In claim 8,
The rotation direction coupling groove is,
A nozzle-replaceable needle-less syringe that has a width smaller than the diameter of the coupling pin and includes a separation prevention portion that prevents the coupling pin from separating. In claim 1,
A drug ampoule that is detachably coupled to an ampoule mounting portion formed on an outer surface of one of the main body and the nozzle and configured to supply drug to a drug supply hole formed in the drug receiving portion;
A nozzle replaceable needleless syringe further comprising an ampoule cover installed to open and close the ampoule mounting portion. In claims 2 to 8,
The driving force generator,
a pressure chamber provided inside the main body and storing a pressure-generating liquid;
It includes an energy focusing unit that concentrates and applies energy to the pressure generating liquid stored in the pressure chamber,
A nozzle-replaceable needle-less syringe that injects the drug using the pressure of a bubble created by temporarily vaporizing the pressure generating liquid by the energy applied from the energy focusing unit. In claim 11,
A nozzle-replaceable needleless syringe further comprising a sealing member provided on at least one of the main body and the nozzle to prevent the drug contained in the drug receiving portion from leaking into the driving force generating portion. In claim 12,
The sealing member is,
A fixed elastic membrane installed at the end of the pressure chamber and expanding in a direction to pressurize the drug in the drug receiving portion when the pressure of the pressure chamber increases;
A nozzle-replaceable needle-less syringe comprising a replaceable elastic film that is installed opposite the fixed elastic film in the nozzle, expands together with the fixed elastic film, and is detachable from the main body together with the nozzle. In claims 2 to 8,
The driving force generator,
A solenoid coil wound around the outer peripheral surface of the main body,
a moving magnetic body that is inserted longitudinally inside the main body and moves forward by a magnetic force generated when a current is applied to the solenoid coil;
A piston that is inserted inside the main body ahead of the moving magnetic body and moves forward by an impact force applied by the moving magnetic body when the moving magnetic body moves forward;
an elastic member for the moving magnetic body, which is provided between the moving magnetic body and the piston and provides an elastic force to the moving magnetic body in a direction in which the moving magnetic body moves backward;
A nozzle-replaceable needleless syringe comprising forward and backward driving means for repeating forward and backward movement of the piston by repeatedly supplying and blocking current to the solenoid coil at a preset cycle. In claim 14,
A nozzle-replaceable needleless syringe further comprising a sealing member provided on at least one of the main body and the nozzle to prevent the drug contained in the drug receiving portion from leaking into the driving force generating portion. In claim 15,
The sealing member is,
A nozzle-replaceable needle-less syringe including a replaceable elastic membrane that is installed opposite the end of the piston in the nozzle, is formed to be stretchable when the piston moves forward and backward, and is detachable from the main body together with the nozzle. In claim 16,
The replacement elastic membrane,
A nozzle-replaceable needle-free syringe fastened to a cover holder provided on the inner peripheral surface of the drug receiving portion. In claim 15,
The sealing member is,
A nozzle-replaceable needleless syringe comprising a fixed elastic film that is fixedly installed inside the main body to cover an end of the piston and is flexible when the piston moves forward and backward. In claim 15,
The sealing member is,
A nozzle-replaceable needle-less syringe comprising a replacement piston that is detachably coupled to the end of the piston, is disposed inside the drug receiving portion, and presses the drug in conjunction with the piston when the piston moves forward and backward. In claim 19,
A screw coupling portion having male threads is formed to protrude on one of the piston and the replacement piston,
A nozzle-replaceable needle-less syringe in which the other one of the piston and the replacement piston has a coupling groove having a female thread so that the screw coupling part is screwed. In claim 15,
The sealing member is,
A replacement piston that is capable of moving forward and backward inside the nozzle and moves forward when the piston moves forward to pressurize the drug;
A nozzle replaceable needleless syringe further comprising an elastic member for a replacement piston that is provided between the nozzle and the replacement piston and provides elastic force to the replacement piston to move backward when the piston moves backward. In a needleless syringe that repeatedly sprays drugs at high speed,
A hollow body;
It is provided inside the main body and includes a pressure chamber in which pressure generation liquid is stored, and an energy focusing unit that concentrates and applies energy to the pressure generation liquid stored in the pressure chamber, and the energy applied from the energy focusing unit is used to a driving force generator that uses the pressure of the bubble created by temporarily vaporizing the pressure generating liquid as a driving force for spraying the drug;
It is detachably coupled to the open front of the main body, is provided with a drug receiving portion that communicates with the open front of the pressure chamber and accommodates the drug, and the drug contained in the drug receiving portion is supplied by pressure applied from the pressure chamber. a nozzle that sprays to the outside;
Attachment and detachment means provided on the main body and the nozzle to detachably couple the nozzle to the main body;
a fixed elastic membrane installed at an end of the pressure chamber and expanding in a direction to pressurize the drug in the drug receiving portion when the pressure of the pressure chamber increases;
A nozzle-replaceable needle-less syringe comprising a replaceable elastic film that is installed opposite the fixed elastic film in the nozzle, expands together with the fixed elastic film, and is detachable from the main body together with the nozzle. In a needleless syringe that repeatedly sprays drugs at high speed,
A hollow body;
A solenoid coil wound around the outer peripheral surface of the main body, a moving magnetic body longly inserted into the inside of the main body in the longitudinal direction and moving forward by a magnetic force generated when a current is applied to the solenoid coil, and a moving magnetic body inside the main body A piston is inserted in the front and moves forward by the impact force applied by the kinetic magnetic body when the moving magnetic body moves forward, and is provided between the moving magnetic body and the piston, and provides an elastic force to the moving magnetic body in the direction in which the moving magnetic body moves backward. Injecting the drug, including an elastic member for a kinetic magnetic material that provides an elastic member and forward and backward driving means for repeating the forward and backward movements of the piston by repeating the supply and interruption of current to the solenoid coil at a preset cycle. a driving force generator that generates a driving force for;
a nozzle that is detachably coupled to the main body, has a drug receiving portion that accommodates the drug, and sprays the drug contained in the drug receiving portion to the outside by the driving force;
Attachment and detachment means provided on the main body and the nozzle to separate the nozzle from the main body or to couple the nozzle to the main body when the nozzle is replaced;
a fixed elastic film that is fixedly installed inside the main body to cover an end of the piston and is flexible when the piston moves forward and backward;
A nozzle-replaceable needle-less syringe including a replaceable elastic membrane that is installed opposite the end of the piston in the nozzle, is formed to be stretchable when the piston moves forward and backward, and is detachable from the main body together with the nozzle. In a needleless syringe that repeatedly sprays drugs at high speed,
A hollow body;
A solenoid coil wound around the outer peripheral surface of the main body, a moving magnetic body longly inserted into the inside of the main body in the longitudinal direction and moving forward by a magnetic force generated when a current is applied to the solenoid coil, and a moving magnetic body inside the main body A piston is inserted in the front and moves forward by the impact force applied by the kinetic magnetic body when the moving magnetic body moves forward, and is provided between the moving magnetic body and the piston, and provides an elastic force to the moving magnetic body in the direction in which the moving magnetic body moves backward. Injecting the drug, including an elastic member for a kinetic magnetic material that provides an elastic member and forward and backward driving means for repeating the forward and backward movements of the piston by repeating the supply and interruption of current to the solenoid coil at a preset cycle. a driving force generator that generates a driving force for;
a nozzle that is detachably coupled to the main body, has a drug receiving portion that accommodates the drug, and sprays the drug contained in the drug receiving portion to the outside by the driving force;
Attachment and detachment means provided on the main body and the nozzle to separate the nozzle from the main body or to couple the nozzle to the main body when the nozzle is replaced;
A nozzle-replaceable needle-less syringe comprising a replacement piston that is detachably coupled to the end of the piston, is disposed inside the drug receiving portion, and presses the drug in conjunction with the piston when the piston moves forward and backward.

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