Needleless syringe and needleless injection method

Abstract

A needleless syringe according to one embodiment of the present invention may comprise: a discharge unit for discharging a discharge target accommodated therein to the outside at a rate that gradually increases over time; a pressurizing unit for pressurizing the discharge unit at a rate that gradually increases over time; an adjustment unit for transferring energy that gradually increases over time to the pressurizing unit for a predetermined period of time and adjusting the energy not to be transferred to the pressurizing unit after the predetermined period of time has elapsed; and an energy unit for generating energy that gradually increases over time and then gradually decreases, and transferring the energy to the adjustment unit. Accordingly, the discharge target is discharged at a rate that gradually increases over time such that the amount of the discharged discharge target that does not penetrate the skin is minimized, thereby preventing infection caused by the discharge target that does not penetrate the skin.

Description

Needleless syringe and needleless injection method

[0001] The present invention relates to a needleless syringe and a needleless injection method.

[0002] A needleless syringe is a syringe that injects a solution without a needle. Needleless syringes have the advantage of solving problems such as needle phobia, disease infection, and waste generation caused by needles. In addition, needleless syringes have various advantages including safety, food safety, productivity, work efficiency, worker safety, and environmental friendliness.

[0003] Needleless syringes include needleless syringes that use compressed gas or compression springs using compressed carbon dioxide, nitrogen, or air, and needleless syringes that use voice coils using Lorentz force, piezo effect, laser liquid vaporization, gunpowder explosion, etc., to make the energy action time very short.

[0004] A needleless syringe using a compression spring is disclosed in U.S. Patent No. 5,599,302, U.S. Patent No. 5,782,802, Korean Published Patent No. 10-2004-0074877, Korean Published Patent No. 10-2001-0074767, and Japanese Patent No. 3255098. A needleless syringe using compressed gas is disclosed in Korean Registered Patent No. 10-1502752. A needleless syringe using Lorentz force is disclosed in Korean Published Patent No. 10-2019-0122397.

[0005] Needleless syringes utilizing compressed gas or compression springs have the advantage of a simple structure, resulting in a small size and low production costs. However, conventional needleless syringes using compressed gas or compression springs have limitations in limiting the energy transfer time due to the characteristics of the springs and gases; consequently, the pressurized energy gradually increases and then gradually decreases over time. Consequently, the velocity of the piston pressurized by the energy of the compression spring or gas also gradually increases and then gradually decreases over time, and the velocity of the injection fluid ejected from the syringe by the piston also gradually increases and then gradually decreases. As a result, while the velocity of the injection fluid ejected by the piston gradually decreases, droplets or similar tail-like structures are formed. However, these droplets or similar tail-like structures formed during the gradual decrease in velocity present a problem in that they are difficult to penetrate the skin.

[0006] In addition, conventional needleless syringes using compression springs or compressed gas had problems such as causing fear and deformation or damage to the structures due to loud noise generated by the collision of structures at the point when the strong energy transmitted from the compression spring or compressed gas to the piston stopped.

[0007] Conventional needleless syringes utilizing voice coils, the piezoelectric effect, laser liquid vaporization, or gunpowder explosions have problems such as complex construction, high production costs, and large size that makes them inconvenient to use.

[0008] Therefore, there is a need to propose a needleless syringe that reduces collision noise between structures, has a simple configuration and low production costs, is small enough to be convenient to use, and enhances the skin penetration effect of the injection solution.

[0009] One problem that the present invention aims to solve is to provide a needleless syringe and a needleless injection method that can prevent infection caused by the discharged discharge that has not penetrated the skin by minimizing the amount of discharged discharge that has not penetrated the skin by discharging the discharged discharge at a rate that gradually increases over time for a certain period and not discharging the discharged discharge after a certain period has passed.

[0010] Another problem that the present invention aims to solve is to provide a needleless syringe and a needleless injection method that prevents infection caused by the discharged discharge that does not penetrate the skin and prevents needle phobia caused by collision noise by preventing collision noise while discharging a discharge target at a rate that gradually increases over time for a certain period and not discharging the discharge target after a certain period has elapsed.

[0011] The problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person skilled in the art from the description below.

[0012] A needleless syringe according to one embodiment of the present invention may comprise a discharge unit that discharges a discharge target contained therein to the outside at a rate that gradually increases over time, a pressurizing unit that pressurizes the discharge unit at a rate that gradually increases over time, a controlling unit that transmits energy that gradually increases over time to the pressurizing unit for a certain period of time and controls the transmission of energy to the pressurizing unit after a certain period of time, and an energy unit that generates energy that gradually increases over time and then gradually decreases over time and transmits it to the controlling unit.

[0013] In the present embodiment, the control unit may include a first control unit comprising a first gear unit formed such that gear meshing occurs to transmit energy to the pressurizing unit while the energy received from the energy unit gradually increases over time, and gear meshing does not occur to transmit energy to the pressurizing unit while the energy received from the energy unit gradually decreases over time; a second control unit comprising a second gear unit formed to receive energy from the first control unit and rotate by meshing with the first gear unit of the first control unit; and a third control unit formed to receive energy from the second control unit, with one end connected to the second control unit and the other end connected to the pressurizing unit and rotating together with the second gear unit.

[0014] In the present embodiment, the first gear of the first control unit may be formed such that the second gear of the second control unit rotates by engaging with the second gear of the second control unit while the energy received from the energy unit gradually increases over time, and does not engage with the second gear of the second control unit while the energy received from the energy unit gradually decreases over time, thereby preventing the second gear of the second gear from rotating.

[0015] In the present embodiment, the second gear portion of the second adjustment portion may be formed such that the third adjustment portion rotates together with the first gear portion of the first adjustment portion while rotating in engagement with the first gear portion of the first adjustment portion, and does not rotate together with the third adjustment portion while not rotating in engagement with the first gear portion of the first adjustment portion.

[0016] In this embodiment, the third control unit may be formed to move the pressurizing unit while receiving energy from the second control unit, and not move the pressurizing unit while not receiving energy from the second control unit.

[0017] In the present embodiment, the control unit may include a first control unit comprising a guide unit that guides the energy received from the energy unit to be transmitted to the pressurizing unit while the energy received from the energy unit gradually increases over time and guides the energy not to be transmitted to the pressurizing unit while the energy received from the energy unit gradually decreases over time; a second control unit formed to receive energy from the first control unit and be guided by the guide unit of the first control unit; a first link comprising one end rotatably connected to the guided part of the second control unit and the other end rotatably connected to the pressurizing unit; and a second link comprising one end rotatably connected to the second control unit and the other end rotatably connected to a fixed axis, and a third control unit formed to receive energy from the second control unit and move the pressurizing unit while the first link is supported by the second link.

[0018] In this embodiment, the guide portion of the first control portion may be formed to guide the second control portion to move along the downward inclined path of the guide portion while the energy received from the energy portion gradually increases over time, and to guide the second control portion to move along the horizontal path of the guide portion while the energy received from the energy portion gradually decreases over time.

[0019] In the present embodiment, the second adjustment unit may be formed such that while moving along the downward inclined path of the guide unit by the guide unit of the first adjustment unit, the first link of the third adjustment unit rotates toward the pressure unit with the second adjustment unit as the central axis and the second link of the third adjustment unit rotates toward the opposite side of the pressure unit with the second adjustment unit as the central axis, and while moving along the horizontal path of the guide unit by the guide unit of the first adjustment unit, the first link of the third adjustment unit does not rotate toward the pressure unit with the second adjustment unit as the central axis and the second link of the third adjustment unit does not rotate toward the opposite side of the pressure unit with the second adjustment unit as the central axis.

[0020] In the present embodiment, the first link of the third adjustment unit may be formed to move the pressure unit while the first link of the third adjustment unit rotates toward the pressure unit with the second adjustment unit as the central axis and the second link of the third adjustment unit rotates toward the opposite side of the pressure unit with the second adjustment unit as the central axis, and not to move the pressure unit while the first link of the third adjustment unit does not rotate toward the pressure unit with the second adjustment unit as the central axis and the second link of the third adjustment unit does not rotate toward the opposite side of the pressure unit with the second adjustment unit as the central axis.

[0021] In this embodiment, the energy unit may include any one selected from the group consisting of a compression spring, compressed gas, solenoid movement by a coil and a magnet, deformation by a piezo effect, laser vaporization, and gunpowder explosion.

[0022] A needleless injection method according to another embodiment of the present invention is a method using a needleless syringe according to the above-described embodiment, and may include: a step of generating energy that gradually increases over time and then gradually decreases over time; a step of a control unit transmitting energy that gradually increases over time from the energy received from the energy unit to a pressurizing unit for a certain period of time, and controlling such energy so as not to transmit energy to the pressurizing unit after a certain period of time has elapsed; a step of pressurizing a discharge unit with a pressure that gradually increases over time using the energy that gradually increases over time received from the control unit to the pressurizing unit; and a step of discharging a discharge target contained within the discharge unit at a speed that gradually increases over time using the pressure that gradually increases over time received from the pressurizing unit.

[0023] One effect of the present invention is to provide a needleless syringe and a needleless injection method that can prevent infection caused by the discharged discharge that has not penetrated the skin by minimizing the amount of discharged discharge that has not penetrated the skin by discharging the discharged discharge at a rate that gradually increases over time for a certain period and not discharging the discharged discharge after a certain period has passed.

[0024] Another effect of the present invention is to provide a needleless syringe and a needleless injection method that prevents infection caused by the discharged discharged discharged discharged discharged discharged at a rate that gradually increases over time for a certain period and does not discharge the discharged

[0025] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below.

[0026] FIG. 1 is a schematic diagram showing a needleless syringe according to one embodiment of the present invention.

[0027] Figure 2 is a schematic diagram showing the state in which the energy part is compressed in the discharge device of the needleless syringe of Figure 1.

[0028] Figure 3 is a schematic diagram showing the expanded state of the energy portion in the discharge device of the needleless syringe of Figure 1.

[0029] FIG. 4 is a schematic diagram showing the first control section of the dispensing device of the needleless syringe of FIG. 1.

[0030] Figure 5 is a graph showing the magnitude of energy generated over time by the energy part of the dispensing device of the needleless syringe of Figure 1.

[0031] FIG. 6 is a schematic diagram showing the compressed state of the energy part in the dispensing device of a needleless syringe according to another embodiment of the present invention.

[0032] Figure 7 is a schematic diagram showing the state in which the energy part is compressed in the discharge device of the needleless syringe of Figure 6.

[0033] FIG. 8 is a flowchart illustrating a needleless injection method according to another embodiment of the present invention.

[0034] Specific details for implementing the invention are explained based on the embodiments. These embodiments are provided as examples to enable a person skilled in the art to understand the specific details for implementing the invention and may be modified in various different forms; therefore, the scope of the invention is not limited by the following embodiments.

[0035] Furthermore, the terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0036] In this specification, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0037] (Example 1)

[0038] A needleless syringe (100) according to one embodiment of the present invention may be provided with a housing (110), a handle (120), and a button (130), as exemplarily shown in FIGS. 1 to 3. Additionally, the needleless syringe (100) may be provided with a discharge unit (140), a pressurizing unit (150), a control unit (160), and an energy unit (170) as a discharge device. Furthermore, the needleless syringe (100) may be provided with a discharge target injection unit.

[0039] The housing (110) may cover the discharge device.

[0040] The handle portion (120) is a part integrally combined with the housing (110) and may be a part that a user holds with their hand to operate the needleless syringe (100).

[0041] The button (130) is installed on the handle portion (120) that can be operated with a finger when the user holds the handle portion (120), and may be the part that the user presses to operate the needleless syringe (100).

[0042] The discharge device may be equipped with a discharge section (140), a pressurizing section (150), a control section (160), and an energy section (170).

[0043] The discharge unit (140) may be a device that discharges a discharge target contained within for a certain period of time to the outside at a rate that gradually increases over time, and does not discharge the discharge target to the outside after a certain period of time has elapsed. For example, the discharge unit (140) may be a device that starts discharging a discharge target contained within at a rate that gradually increases over time from a certain point in time T0, and does not discharge the discharge target to the outside after a certain period of time T1 has elapsed from T0. By minimizing the amount of discharge target discharged to the outside by such a discharge unit (140) that does not penetrate the skin, infection caused by the discharge target that does not penetrate the skin can be prevented.

[0044] The discharge unit (140) may discharge the discharge target contained within it in various types at a rate that gradually increases over time for a certain period of time, and may not discharge the discharge target after a certain period of time has elapsed. For example, the discharge unit (140) may discharge the discharge target contained within it at a rate of increasing, constant, or decreasing speed over time, or at a speed that is a combination of these. The discharge unit (140) may determine at what rate of increase the discharge target is discharged by considering various factors such as the discharge target, the discharge speed, and the injection target.

[0045] The discharge unit (140) may include a cylinder (141) having a receiving space (141a) capable of receiving a discharge target inside, and a nozzle (141b) through which the discharge target received inside passes to be discharged to the outside. The discharge unit (140) may include a piston (142) that pressurizes the discharge target so that the discharge target received inside is discharged to the outside through the nozzle (141b). The piston (142) may be injected into the cylinder (141) through an injection port (141c) located opposite the nozzle (141b) in the cylinder (141) and move toward the nozzle (141b) or to the opposite side. The discharge target may be a liquid injectable drug for injection into the human body, etc.

[0046] The pressurizing unit (150) may pressurize the discharge unit (140) at a rate that gradually increases over time. By using this pressurizing unit (150) to discharge the discharge target contained within the discharge unit (140) to the outside at a rate that gradually increases over time, the amount of the discharge target that does not penetrate the skin can be minimized.

[0047] The pressurizing unit (150) can pressurize the discharge unit (140) at a rate that gradually increases over time in various ways. For example, the pressurizing unit (150) can pressurize the discharge unit (140) at a rate of increasing, constant, or decreasing speed over time, or at a rate that is a combination of these. The rate at which the pressurizing unit (150) pressurizes the discharge unit (140) can be determined by considering factors such as the discharge target, the discharge speed, and the injection target.

[0048] The pressurizing part (150) may be formed in an extended shape such that one end is integrally connected to the end opposite the nozzle of the piston (142) of the discharge part (140) and the other end is connected to the control part (160). For the efficiency of pressurization, the pressurizing part (150) may have a cross-sectional area larger than the cross-sectional area of ​​the piston (142) of the discharge part (140), and preferably a cross-sectional area larger than the cross-sectional area of ​​the injection port (141c) of the discharge part (140).

[0049] The control unit (160) may be a device that transmits energy that gradually increases over time to the pressurizing unit (150) for a certain period of time and controls the transmission of energy to the pressurizing unit (150) after a certain period of time has passed. For example, the control unit (160) may be a device that starts transmitting energy that gradually increases over time to the pressurizing unit (150) from a certain point in time T0 and controls the transmission of energy to the pressurizing unit (150) after a certain period of time T1 has passed from T0. By using the energy that gradually increases over time received by the pressurizing unit (150) from the control unit (160) to pressurize the discharge unit (140) for a certain period of time and to stop pressurizing the discharge unit (140) after a certain period of time has passed, the discharge unit (140) may discharge the discharge target contained therein to the outside at a rate that gradually increases over time for a certain period of time and to stop discharging the discharge target after a certain period of time has passed.

[0050] The control unit (160) can be controlled in various ways to deliver energy that gradually increases over time to the pressurizing unit (150) for a certain period of time, and not deliver energy to the pressurizing unit (150) after a certain period of time has passed. For example, the control unit (160) may deliver energy to the pressurizing unit (150) at an energy increase rate that increases over time, is constant, or decreases, or a combination thereof, and may not deliver energy at an energy decrease rate that increases over time, is constant, or decreases, or a combination thereof. Whether the control unit (160) delivers energy that increases at a certain energy increase rate to the pressurizing unit (150) and does not deliver energy that decreases at a certain energy decrease rate to the pressurizing unit (150) can be determined by considering factors such as the discharge target, discharge speed, injection target, and coupling relationship with the pressurizing unit (150).

[0051] The control unit (160) may include a first control unit (161), a second control unit (162), and a third control unit (163), as illustrated in FIGS. 2 and FIGS. 3.

[0052] The first control unit (161) is a part that receives energy from the energy unit (170) and may include a main body (161a), a support unit (161b), and a first gear unit (161c).

[0053] The main body (161a) is a part that receives energy from the energy section (170) and moves, and can be formed in various shapes suitable for this. For example, the main body (161a) can be formed in a shape that extends in the longitudinal direction of the pressurizing section (150).

[0054] The support member (161b) is a part that supports the energy member (170) and receives energy from the energy member (170), and can be formed in various shapes suitable for this purpose. For example, the support member (161b) can be formed in a shape that protrudes from the main body (161a) so as to support the energy member (170).

[0055] The support member (161b) may not only receive energy from the energy member (170) but also function to compress the energy member (170) to charge energy. For example, as shown in FIG. 3, after the support member (161b) has fully received energy from the energy member (170) by fully expanding the energy member (170), it may charge energy to the energy member (170) by compressing the energy member (170) as shown in FIG. 2. However, it is not limited to this, and the function of compressing the energy member (170) to charge energy may be performed by a different member separate from the support member (161b).

[0056] The first gear section (161c) may be formed such that gear meshing occurs to transmit energy to the pressurizing section (150) while the energy received from the energy section (170) gradually increases over time, and gear meshing does not occur to transmit energy to the pressurizing section (150) while the energy received from the energy section (170) gradually decreases over time.

[0057] For example, as shown in FIG. 4, the first gear part (161c) has a predetermined length l along the direction of movement of the first adjustment part (161) at the lower end of the first adjustment part (161). c A gear section may be formed to that extent. Here, length l cThe range can be determined within the interval corresponding to the section where the energy received from the energy unit (170) gradually increases over time. The magnitude of the energy generated by the energy unit (170) over time may have the shape of a graph as exemplarily illustrated in FIG. 5. It can be seen that the magnitude of the energy generated by the energy unit (170) gradually increases while drawing an S-curve up to approximately 0.041 seconds, and gradually decreases from approximately 0.041 seconds (D). Furthermore, it can be seen that the S-curve section where the magnitude of the energy generated by the energy unit (170) gradually increases includes a section where the energy growth rate over time increases (A), a constant section (B), and a decreasing section (C). Considering this change in the energy growth rate over time, the length l of the first gear unit (161c) c It is desirable to form it so that it corresponds to a section including an increasing section (A) and a constant section (B), or to a section including all of an increasing section (A), a constant section (B), and a decreasing section (C).

[0058] Adjacent to the first gear section (161c), at the lower end of the first adjustment section (161), a predetermined length l along the direction of movement of the first adjustment section (161) d A non-gear section (161d) in which a gear section is not formed can be arranged. Here, length l d It can be formed to correspond to a section (D) in which the energy received from the energy section (170) gradually decreases over time. However, the length l of the non-gear section (161d) d It is not limited to a length corresponding to a section (D) in which the energy received from the energy section (170) gradually decreases over time, but may be further formed to correspond to a section in which the energy received from the energy section (170) gradually increases over time. For example, the length l of the non-gear section (161d). dIt can be formed to correspond to a section (D) in which the energy received from the energy unit (170) gradually decreases over time, and furthermore, to correspond to a section (C) in which the energy increase rate over time decreases among the sections in which the energy received from the energy unit (170) gradually increases over time.

[0059] It is desirable that the non-gear portion (161d) be partially cut compared to the first gear portion (161c) so that it does not come into contact with the second adjustment portion (162), thereby ensuring that energy transfer is not reliably achieved.

[0060] While the energy received from the energy unit (170) gradually increases over time, as shown in FIG. 2, the energy is transferred to the second adjustment unit (162) by moving the main body (161a) toward the pressurizing unit (150) while the first gear unit (161c) and the second adjustment unit (162) are engaged with each other. Then, when the energy received from the energy unit (170) begins to gradually decrease over time, as shown in FIG. 3, the energy is not transferred to the second adjustment unit (162) by moving the main body (161a) while the first gear unit (161c) and the second adjustment unit (162) are not engaged with each other and the non-gear unit (161d) and the second adjustment unit (162) are facing each other without contact. Subsequently, while the energy received from the energy unit (170) gradually decreases over time, the first gear unit (161c) and the second adjustment unit (162) do not mesh with each other, and the non-gear unit (161d) and the second adjustment unit (162) do not come into contact with each other but face each other, so that the main body (161a) remains in a state of moving, thereby maintaining a state in which energy is not transmitted to the second adjustment unit (162).

[0061] In this way, by transmitting energy that gradually increases over time to the second control unit (162) through the first gear unit (161c) and the non-gear unit (161d) and not transmitting energy that gradually decreases over time, the discharge target can be discharged at a speed that gradually increases over time. In this case, compared to the case where the discharge target is discharged at a speed that gradually decreases over time, the portion that is not penetrated into the skin can be minimized.

[0062] Furthermore, the second control unit (162) is switched from a state where it is engaged with the first gear unit (161c) to a state where it is not engaged, thereby switching the energy transfer state to the second control unit (162) to an energy non-transfer state, which prevents the second control unit (162) or the energy unit (170), etc., from colliding with other structures. In this case, compared to the energy transfer state being switched by the second control unit (162) or the energy unit (170), etc. colliding with other structures, the generation of collision noise and the resulting fear of needles can be prevented.

[0063] Meanwhile, adjacent to the non-gear portion (161d), at the lower end of the first adjustment portion (161), a predetermined length l along the direction of movement of the first adjustment portion (161) e A third gear section (161e) having a gear section formed to such an extent may be further arranged. Also, the length l of the third gear section (161e) e A circular fourth gear section (164) may be further arranged, which corresponds to and meshes with the third gear section (161e) and has a gear section partially formed on its outer surface. The third gear section (161e) moves in a direction opposite to the pressing section (150) by rotating the gear section of the fourth gear section (164) meshed with it, for example, clockwise rotation as exemplarily illustrated in FIG. 3, thereby moving the main body (161a) and the supporting section (161b) in a direction opposite to the pressing section (150), so that the energy section (170) can be compressed by the supporting section (161b). Here, length l eThe support member (161b) can be formed in such a way that the energy member (170) can be compressed by the movement of the support member (161b). When the third gear member (161e) moves toward the pressurizing member (150) by the energy received from the energy member (170), the third gear member (161e) can correspond to the part of the fourth gear member (164) where the gear part is not formed. By doing so, the third gear member (161e) can move without engaging with the gear part of the fourth gear member (164). In this case, even if the fourth gear member (164) rotates clockwise, which is a direction that hinders the movement of the third gear member (161e), for example as exemplarily shown in FIG. 2, the third gear member (161e) can move smoothly toward the pressurizing member (150) without being hindered by the fourth gear member (164). Accordingly, the fourth gear (164) can always rotate in a constant direction, such as clockwise, so it can operate stably and reliably.

[0064] The second control unit (162) is a part that receives energy from the first control unit (161) and transmits it to the third control unit (163). To this end, the second control unit (162) may include a second gear unit (162a) formed to rotate in mesh with the first gear unit (161c) of the first control unit (161).

[0065] The second gear section (162a) rotates in mesh with the first gear section (161c) of the first control section (161) while the first control section (161) receives energy that gradually increases over time from the energy section (170), and does not rotate in mesh with the first gear section (161c) while facing the non-gear section (161d) of the first control section (161) while the first control section (161) receives energy that gradually decreases over time from the energy section (170). Accordingly, the second control section (162) is able to receive only energy that gradually increases over time from the energy section (170) and transmit it to the third control section (163).

[0066] The second adjustment unit (162) may further include the rotational center axis (162b) of the second gear unit (162a), as shown in FIG. 2.

[0067] The third control unit (163) is a part that receives energy from the second control unit (162) and transmits it to the pressurizing unit (150). To this end, the third control unit (163) may be formed such that one end is connected to the second control unit (162) and the other end is connected to the pressurizing unit (150). Accordingly, the third control unit (163) may move the pressurizing unit (150) while receiving energy from the second control unit (162), and may not move the pressurizing unit (150) while not receiving energy from the second control unit (162).

[0068] The third adjustment unit (163) can rotate together with the second adjustment unit (162) by connecting one end of the third adjustment unit (162) to the second adjustment unit (162). For example, the third adjustment unit (163) can rotate together with the second gear unit (162a) by connecting it to the second gear unit (162a) of the second adjustment unit (162), as illustrated in FIG. 2. While the second gear unit (162a) of the second adjustment unit (162) rotates while engaging with the first gear unit (161c) of the first adjustment unit (161), one end of the third adjustment unit (163) rotates together, and while the second gear unit (162a) of the second adjustment unit (162) does not rotate because it does not engage with the first gear unit (161c) of the first adjustment unit (161), one end of the third adjustment unit (163) also does not rotate. However, the third adjustment part (163) may be connected to another part of the second adjustment part (162) other than the second gear part (162a) of the second adjustment part (162) and may rotate together with the second adjustment part (162).

[0069] The third adjustment part (163) can move the pressure part (150) by connecting its other end to the pressure part (150). For example, the third adjustment part (163) can move the pressure part (150) by connecting it to the connecting part (152) of the pressure part (150), as illustrated in FIG. 2. The connecting part (152) of the pressure part (150) may be formed in a groove shape into which the other end of the third adjustment part (163) is inserted into a portion corresponding to the third adjustment part (163) of the main body (151) of the pressure part (150). As the other end of the third adjustment part (163) rotates together with the third adjustment part (163), the pressure part (150) is moved toward the discharge part (140) by the other end inserted into the connecting part (152) of the pressure part (150).

[0070] The energy unit (170) may be a device that generates and transmits energy to the control unit, which gradually increases over time and then gradually decreases. To this end, the energy unit (170) may include any one selected from the group consisting of a compression spring, compressed gas, solenoid movement by a coil and a magnet, deformation by a piezo effect, laser vaporization, and gunpowder explosion. For example, the energy unit (170) may be made of a spring, as illustrated in FIGS. 2 and 3, for example. The energy unit (170) made of a spring may have one end connected to the support member (161b) of the first control unit (161) and the other end connected to the opposite side of the support member (161b) in the housing (110).

[0071] As the energy unit (170) moves in a direction in which the first adjustment unit (161) compresses the energy unit (170) by rotating in a constant direction such as clockwise of the fourth gear unit (164), the energy unit (170), with one end supported by the support unit (161b) as illustrated in FIG. 3, is compressed and loaded to charge energy. That is, as the gear unit of the fourth gear unit (164) meshes with the third gear unit (161e) and rotates clockwise, the third gear unit (161e) moves in a direction opposite to the pressure unit (150), so that the main body (161a) on which the third gear unit (161e) is formed and the support unit (161b) connected thereto move in a direction opposite to the pressure unit (150), thereby compressing the energy unit (170) and charging energy.

[0072] Afterward, the energy unit (170) generates energy as it expands and is released from loading as shown in FIG. 2, for example, by pressing the button (130), and transmits the generated energy to the first control unit (161) through the support unit (161b).

[0073] As the energy section (170) begins to expand, the generated energy forms a graph as shown in Fig. 5, which gradually increases over time and then gradually decreases.

[0074] In addition, the needleless syringe (100) that discharges a discharge target at a gradually increasing speed over time according to the present embodiment may further be provided with a discharge target injection part (not shown).

[0075] The discharge target injection unit may be a device for injecting a discharge target into the discharge unit (140). Such a discharge target injection unit may store a discharge target and inject a predetermined amount, such as a single discharge amount, into the discharge unit (140).

[0076] (Example 2)

[0077] A needleless syringe (100) according to another embodiment of the present invention is illustrated by way of example in FIGS. 6 and FIGS. 7. Since the control unit in this embodiment is different from that in Example 1, it will be described in detail below with a focus on this. For components identical to those in Example 1, the same drawings and reference numerals are used in this embodiment.

[0078] In this embodiment, the control unit (160') may include a first control unit (161'), a second control unit (162'), and a third control unit (163'), as shown in FIGS. 6 and 7.

[0079] The first control unit (161') is a part that receives energy from the energy unit (170) and may include a main body (161'a), a support unit (161'b), a first guide unit (161'c), and a second guide unit (161'd).

[0080] The main body (161'a) is a part that receives energy from the energy section (170) and moves, and can be formed in various shapes suitable for this. For example, the main body (161'a) can be formed in a shape that extends in the longitudinal direction of the pressurizing section (150).

[0081] The support member (161'b) is a part that supports the energy member (170) and receives energy from the energy member (170), and can be formed in various shapes suitable for this purpose. For example, the support member (161'b) can be formed as a side part that contacts one end of the energy member (170) from the main body (161'a) so as to support the energy member (170), as shown in FIGS. 6 and 7.

[0082] The support member (161'b) may not only receive energy from the energy member (170) but also function to compress the energy member (170) to charge energy. For example, as shown in FIG. 7, after the support member (161'b) has fully received energy from the energy member (170) by fully expanding the energy member (170), it may charge energy to the energy member (170) by compressing the energy member (170) as shown in FIG. 6. However, it is not limited to this, and the function of compressing the energy member (170) to charge energy may be performed by a different member separate from the support member (161'b).

[0083] The first guide section (161'c) may be formed to guide the energy to be delivered to the pressurizing section (150) while the energy received from the energy section (170) gradually increases over time, and not to guide the energy to be delivered to the pressurizing section (150) while the energy received from the energy section (170) gradually decreases over time.

[0084] For example, the first guide member (161'c) has a predetermined length l' such that it gradually slopes downward with respect to the direction of movement of the first adjustment member (161') on the main body (161'a) of the first adjustment member (161'), as shown in FIG. 6. c It may be formed in a groove shape to that extent. Here, length l' cThe range can be determined within the interval corresponding to the section where the energy received from the energy unit (170) gradually increases over time. The magnitude of the energy generated by the energy unit (170) over time may have the shape of a graph as exemplarily illustrated in FIG. 5. It can be seen that the magnitude of the energy generated by the energy unit (170) gradually increases while drawing an S-curve up to approximately 0.041 seconds, and gradually decreases from approximately 0.041 seconds (D). Furthermore, it can be seen that the S-curve section where the magnitude of the energy generated by the energy unit (170) gradually increases includes a section where the energy growth rate over time increases (A), a constant section (B), and a decreasing section (C). Considering this change in the energy growth rate over time, the length l' of the first guide unit (161'c) c It is desirable to form it so that it corresponds to a section including an increasing section (A) and a constant section (B), or to a section including all of an increasing section (A), a constant section (B), and a decreasing section (C).

[0085] As shown in FIG. 6, the second guide member (161'd) extends from the first guide member (161'c) and along a horizontal path of a predetermined length l' along the movement direction of the first adjustment member (161) to the main body (161'a) of the first adjustment member (161'). d It may be formed in a groove shape to that extent. Here, length l' d It can be formed to correspond to a section (D) in which the energy received from the energy section (170) gradually decreases over time. However, length l' d It is not limited to a length corresponding to a section (D) in which the energy received from the energy unit (170) gradually decreases over time, but can be further formed to correspond to a section in which the energy received from the energy unit (170) gradually increases over time. For example, length l'd It can be formed to correspond to a section (D) in which the energy received from the energy unit (170) gradually decreases over time, and furthermore, to correspond to a section (C) in which the energy increase rate over time decreases among the sections in which the energy received from the energy unit (170) gradually increases over time.

[0086] While the energy received from the energy unit (170) gradually increases over time, as shown in FIG. 6, the main body (161'a) moves toward the pressurizing unit (150) so that the second control unit (162') is guided by the first guide unit (161'c), thereby transferring energy to the second control unit (162'). Subsequently, when the energy received from the energy unit (170) begins to gradually decrease over time, as shown in FIG. 7, the main body (161'a) moves toward the pressurizing unit (150) so that the second control unit (162') is guided by the second guide unit (161'd), thereby preventing energy from being transferred to the second control unit (162'). Subsequently, while the energy received from the energy unit (170) gradually decreases over time, the second control unit (162') is guided by the second guide unit (161'd) and the state in which the main body (161'a) moves toward the pressurizing unit (150) is maintained, thereby maintaining a state in which no energy is delivered to the second control unit (162').

[0087] In this way, by guiding the second control unit (162') through the first guide unit (161'c) and the second guide unit (161'd), energy that gradually increases over time is delivered to the second control unit (162'), and energy that gradually decreases over time is not delivered, thereby allowing the discharge target to be discharged at a rate that gradually increases over time. In this case, compared to the case where the discharge target is discharged at a rate that gradually decreases over time, the portion that is not penetrated into the skin can be minimized.

[0088] Furthermore, the second control unit (162') is switched from a state guided by the first guide unit (161'c) to a state guided by the second guide unit (161'd), thereby switching the energy transfer state for the second control unit (162') to an energy non-transfer state, which prevents the second control unit (162') or the energy unit (170), etc., from colliding with other structures. In this case, compared to the energy transfer state being switched by the second control unit (162') or the energy unit (170), etc. colliding with other structures, the generation of collision noise and the resulting fear of needles can be prevented.

[0089] Meanwhile, the third guide member (161'f) may be further formed in a groove shape along the direction of movement of the first adjustment member (161) in the main body (161'a) of the first adjustment member (161') so as to extend from the front end of the first guide member (161'c), as exemplarily illustrated in FIG. 6. The third guide member (161'f) may be a part that allows the second adjustment member (162') to be seated before moving downwardly inclined by the first guide member (161'c).

[0090] Additionally, a third gear section (161'e) may be further formed along the direction of movement of the first adjustment section (161') at the lower part of the main body (161'a) of the first adjustment section (161'). The third gear section (161'e) moves in a direction opposite to the pressure section (150) by rotating the gear section of the fourth gear section (164) that is engaged with it, for example, clockwise rotation as exemplarily illustrated in FIG. 7, thereby moving the main body (161'a) and the support section (161'b) in a direction opposite to the pressure section (150), so that the energy section (170) can be compressed by the support section (161'b). When the third gear section (161'e) moves toward the pressure section (150) by the energy received from the energy section (170), the third gear section (161'e) may correspond to the part of the fourth gear section (164) where the gear section is not formed. Accordingly, even if the fourth gear part (164) rotates clockwise, which is an example as illustrated in FIG. 6, the third gear part (161'e) can move smoothly toward the pressurizing part (150) without being obstructed by the fourth gear part (164).

[0091] The second control unit (162') is a part that receives energy from the first control unit (161') and transmits it to the third control unit (163'). To this end, the second control unit (162') may be formed to be guided by the first and second guide units (161'c) (161'd) of the first control unit (161).

[0092] The second control unit (162') moves downwardly inclined by being guided by the first guide unit (161'c) of the first control unit (161') while the first control unit (161') receives energy that gradually increases over time from the energy unit (170), and does not move by being guided by the second guide unit (161'd) of the first control unit (161') while the first control unit (161') receives energy that gradually decreases over time from the energy unit (170). Accordingly, the second control unit (162') is able to receive only energy that gradually increases over time from the energy unit (170) and transmit it to the third control unit (163').

[0093] The third control unit (163') is a part that receives energy from the second control unit (162') and transmits it to the pressurizing unit (150). To this end, the third control unit (163') may include a first link (163'a) and a second link (163'b).

[0094] As illustrated in FIGS. 6 and 7, one end of the first link (163'a) may be rotatably connected to the second adjustment part (162') and the other end may be rotatably connected to the pressure part (150), and one end of the second link (163'b) may be rotatably connected to the second adjustment part (162') and the other end may be rotatably connected. The other end of the first link (163'a) may be rotatably connected to the pressure part (150) by a rotation axis (163'c). The other end of the second link (163'b) may be rotatably connected to a fixed axis (163'd), for example, a fixed axis (163'd) coupled to the housing (110).

[0095] While the second adjustment unit (162') moves along a downwardly inclined path by the first guide unit (161'c) of the first adjustment unit (161'), the first link (163'a) rotates toward the pressure unit (150) with the second adjustment unit (162') as the central axis, and the second link (163'b) rotates toward the opposite side of the pressure unit (150) with the second adjustment unit (162') as the central axis. In this case, since the other end of the second link (163'b) is rotatably connected to the fixed axis (163'd), the first link (163'a) is supported by the second link (163'b), and by moving one end toward the pressure unit (150), the pressure unit (150) is moved.

[0096] While the second adjustment unit (162') moves along a horizontal path by the second guide unit (161'd) of the first adjustment unit (161'), the first link (163'a) does not rotate toward the pressure unit (150) with the second adjustment unit (162') as the central axis, and the second link (163'b) also does not rotate toward the opposite side of the pressure unit (150) with the second adjustment unit (162') as the central axis. In this case, since one end of the first link (163'a) does not move toward the pressure unit (150), the pressure unit (150) is not moved.

[0097] In this way, the third control unit (163') moves the pressurizing unit (150) while receiving energy from the second control unit (162') and moving toward the pressurizing unit (150), and does not move the pressurizing unit (150) while not receiving energy from the second control unit (162') and not moving toward the pressurizing unit (150).

[0098] (Example 3)

[0099] A needleless injection method according to another embodiment of the present invention may use the needleless syringe (100) of the above-described embodiment.

[0100] The needleless injection method (S200) according to the present embodiment may include a step of generating energy (S210), a step of controlling energy transfer (S220), a step of pressurizing (S230), and a step of discharging (S240).

[0101] The energy generating step (S210) may be a step in which the energy part (170) generates energy that gradually increases over time and then gradually decreases.

[0102] Here, the energy unit (170) may include any one selected from the group consisting of a compression spring, compressed gas, solenoid movement by a coil and magnet, deformation by a piezo effect, laser vaporization, and gunpowder explosion.

[0103] The step of controlling energy transfer (S220) may be a step in which the control unit (160)(160') transmits energy that gradually increases over time from the energy received from the energy unit (170) to the pressurizing unit (150) for a certain period of time, and controls so that no energy is transmitted to the pressurizing unit (150) after a certain period of time has elapsed. For example, the step of controlling energy transfer (S220) may be a step in which energy that gradually increases over time from the energy received from the energy unit (170) begins to be transmitted to the pressurizing unit (150) from a certain point in time T0, and controls so that no energy is transmitted to the pressurizing unit (150) after T1, which is a certain period of time elapsed from T0.

[0104] Here, the control unit (160) may include a first control unit (161) comprising a first gear unit (161c) formed such that gear meshing occurs to transmit energy to the pressurizing unit (150) while the energy received from the energy unit (170) gradually increases over time, and gear meshing does not occur to transmit energy to the pressurizing unit (150) while the energy received from the energy unit (170) gradually decreases over time. Additionally, the control unit (160) may include a second control unit (162) comprising a second gear unit (162a) formed to rotate by receiving energy from the first control unit (161) and engaging with the first gear unit (161c) of the first control unit (161), and a third control unit (163) formed to rotate together with the second gear unit (162a) by receiving energy from the second control unit (162) and having one end connected to the second control unit (162) and the other end connected to the pressurizing unit (150).

[0105] The control unit (160') may include a first control unit (161') comprising a guide unit (161'c) (161'd) that guides the energy received from the energy unit (170) to be transferred to the pressurizing unit (150) while the energy received from the energy unit (170) gradually increases over time, and guides the energy not to be transferred to the pressurizing unit (150) while the energy received from the energy unit (170) gradually decreases over time. Additionally, the control unit (160') may include a second control unit (162') formed to receive energy from the first control unit (161') and be guided by the guide unit (161'c) (161'd) of the first control unit (161'), a first link (163'a) with one end rotatably connected to the second control unit (162') and the other end rotatably connected to the pressurizing unit (150), and a second link (163'b) with one end rotatably connected to the second control unit (162') and the other end rotatably connected to the fixed shaft (163'd), and a third control unit (163') formed to receive energy from the second control unit (162') and move the pressurizing unit (150) while the first link (163'a) is supported by the second link (163'b).

[0106] The pressurizing step (S230) may be a step in which the pressurizing unit (150) pressurizes the discharge unit (140) with a pressure that gradually increases over time using energy that gradually increases over time received from the control unit (160)(160').

[0107] The discharge step (S240) may be a step in which the discharge unit (140) discharges the discharge target contained within the discharge unit (140) at a rate that gradually increases over time with a pressure that gradually increases over time received from the pressurizing unit (150).

[0108] The present invention can be used in a needleless syringe and a needleless injection method.

Claims

1. A discharge unit that discharges a discharge target contained within to the outside at a rate that gradually increases over time; A pressurizing part that pressurizes the discharge part at a rate that gradually increases over time; A control unit that transmits energy that gradually increases over time to a pressurized part for a certain period of time and controls so as not to transmit energy to the pressurized part after a certain period of time has elapsed; and An energy unit that generates energy that gradually increases over time and then gradually decreases, and transmits it to a control unit; Needleless syringe containing 2. In Claim 1, The control unit is, A first control unit including a first gear unit formed such that gear meshing is performed to transmit energy to the pressurizing unit while the energy received from the energy unit gradually increases over time, and gear meshing is not performed to transmit energy to the pressurizing unit while the energy received from the energy unit gradually decreases over time; A second control unit comprising a second gear unit formed to receive energy from a first control unit and rotate by engaging with a first gear unit of the first control unit; and A third control unit formed to receive energy from a second control unit, with one end connected to the second control unit and the other end connected to a pressurizing unit to rotate together with the second gear unit; Needleless syringe containing 3. In Claim 2, A needleless syringe, wherein the first gear of the first control unit is formed such that the second gear of the second control unit rotates by engaging with the second gear of the second control unit while the energy received from the energy unit gradually increases over time, and the second gear does not rotate by not engaging with the second gear of the second control unit while the energy received from the energy unit gradually decreases over time.

4. In Claim 3, A needleless syringe, wherein the second gear of the second adjustment unit is formed such that the third adjustment unit rotates together with the first gear of the first adjustment unit while rotating in engagement with the first gear of the first adjustment unit, and does not rotate together with the third adjustment unit while not rotating in engagement with the first gear of the first adjustment unit.

5. In Claim 4, A needleless syringe, wherein the third control unit is formed to move the pressurizing unit while receiving energy from the second control unit, and not move the pressurizing unit while not receiving energy from the second control unit.

6. In Claim 1, The control unit is, A first control unit including a guide unit that guides the energy to be transferred to the pressurizing unit while the energy received from the energy unit gradually increases over time, and guides the energy not to be transferred to the pressurizing unit while the energy received from the energy unit gradually decreases over time; A second control unit formed to receive energy from a first control unit and be guided by a guide unit of the first control unit; and A third control unit comprising a first link, one end of which is rotatably connected to a second control unit and the other end of which is rotatably connected to a pressure unit, and a second link, one end of which is rotatably connected to a second control unit and the other end of which is rotatably connected to a fixed shaft, and formed to receive energy from the second control unit and move the pressure unit while the first link is supported by the second link; Needleless syringe containing 7. In Claim 6, A needleless syringe, wherein the guide section of the first control section is formed to guide the second control section to move along a downward inclined path of the guide section while the energy received from the energy section gradually increases over time, and to guide the second control section to move along a horizontal path of the guide section while the energy received from the energy section gradually decreases over time.

8. In Claim 7, A needleless syringe, wherein while moving along a downward inclined path of a guide section by a guide section of a first control section, a first link of a third control section rotates toward a pressure section with the second control section as the central axis and a second link of a third control section rotates toward the opposite side of a pressure section with the second control section as the central axis, and while moving along a horizontal path of a guide section by a guide section of a first control section, a first link of a third control section does not rotate toward a pressure section with the second control section as the central axis and a second link of a third control section does not rotate toward the opposite side of a pressure section with the second control section as the central axis.

9. In Claim 8, A needleless syringe, wherein the first link of the third control unit is formed such that it moves the pressure unit while the first link of the third control unit rotates toward the pressure unit with the second control unit as the central axis and the second link of the third control unit rotates toward the opposite side of the pressure unit with the second control unit as the central axis, and does not move the pressure unit while the first link of the third control unit does not rotate toward the pressure unit with the second control unit as the central axis and the second link of the third control unit does not rotate toward the opposite side of the pressure unit with the second control unit as the central axis.

10. A needleless syringe according to claim 1, wherein the energy part comprises any one selected from the group consisting of a compression spring, a compressed gas, solenoid movement by a coil and a magnet, deformation by a piezo effect, laser vaporization, and a gunpowder explosion.

11. A needleless injection method using a needleless syringe according to any one of claims 1 to 10, wherein A step of generating energy that gradually increases over time and then gradually decreases; A step in which the control unit transmits energy that gradually increases over time from the energy received from the energy unit to the pressurizing unit for a certain period of time, and controls so as not to transmit energy to the pressurizing unit after a certain period of time has elapsed; A step of pressurizing a discharge unit with a pressure that gradually increases over time using energy that gradually increases over time received by the pressurizing unit from the control unit; and A step of discharging a discharge target contained within a discharge section at a rate that gradually increases over time, using a pressure that gradually increases over time received by the discharge section from the pressurizing section; A needleless injection method including

Images