Needleless syringe and method for controlling same

Abstract

The present invention relates to a needleless syringe comprising a body part and a nozzle part, wherein the body unit provides a pulse-type pressure of a predetermined magnitude to a drug accommodated in a drug accommodation unit in the nozzle unit, and the nozzle unit discharges, in the form of a microjet through a nozzle hole of the nozzle unit, the drug accommodated in the drug accommodation unit in response to the pulse-type pressure provided by the body unit. A nozzle unit-side connection unit in the nozzle unit, which is mounted on a connection unit of the body unit, includes an information unit configured to store, as tag information, information on equipment parameters for the operation of the needleless syringe. The body unit is provided with: a sensor capable of recognizing the information unit provided in the nozzle unit; and a control unit that automatically sets the equipment parameters for controlling the operation of the needleless syringe, on the basis of the tag information recognized by the sensor.

Description

Needleless syringe and method for controlling the same

[0001] The present invention relates to a needleless syringe, and more particularly, to a needleless syringe capable of repeatedly injecting a drug at high speed without an injection needle.

[0002] A syringe is a device used to inject medication into the tissues of a living organism. It consists of a needle inserted into the body, a syringe barrel containing the medication, and a piston that reciprocates within the syringe barrel, pushing the medication into the needle. The needle has a hole to allow the medication to be injected.

[0003] However, in the case of diabetic patients who need to receive injections several times a day, they need to receive injections frequently even while receiving treatment at home rather than in a hospital. However, because of the pain when the needle penetrates the skin, it is difficult for them to inject themselves while receiving treatment at home rather than in a hospital.

[0004] Recently, research and development on needle-less syringes have been actively pursued to alleviate the fear of needles and prevent needle-borne infections.

[0005] However, since existing needleless syringes are designed to inject a certain amount of drug into only one part of the skin at a time, damage to skin tissue may occur.

[0006] In addition, because of the inconvenience of reloading after a single injection, there is a limitation in using it to evenly inject multiple drugs into a large area of ​​skin, such as in the field of skin beauty.

[0007] Accordingly, in order to solve these problems, the present inventors developed the needleless syringe disclosed in Patent Document 1. According to the needleless syringe disclosed in Patent Document 1, a piston that pressurizes and injects a drug is configured to repeatedly move back and forth using a power source such as a solenoid, thereby enabling a small amount of drug to be repeatedly injected at high speed and evenly injected into a wider area of ​​skin.

[0008] (Patent Document 1) Patent Document 1: Republic of Korea Patent No. 10-2088830 (March 9, 2020)

[0009] Figure 11 is a diagram showing the injection depth, injection amount, and skin loss rate of each drug type when supplying drugs into subcutaneous tissue through a needleless syringe. As illustrated in Figure 11, the viscosity (molecular weight) shows a large variation depending on the type of drug. For example, in the case of drugs with a low molecular weight, such as saline, the injection depth is deep but the loss rate is high, and in the case of drugs with a high molecular weight, such as 1% HA polymer, the injection depth is low but the loss rate is low. Therefore, it is necessary to supply drugs to the skin with different pressures and injection amounts depending on the type of drug. However, in the case of needleless syringes such as Patent Document 1, there was an inconvenience in that the user had to manually set the current applied to the solenoid coil, etc. every time the drug solution being used was changed, and there was a problem in that the user had to understand the settings of the needleless syringe for each drug in advance.

[0010] The present invention has been devised to solve the above-mentioned problem, and the purpose of the present invention is to provide a needleless syringe that can automatically set the setting value of the needleless syringe according to the drug being used, even when the user is not aware of the characteristics of the drug used in the needleless syringe, such as viscosity, and the relationship between such characteristics and the setting value of the needleless syringe.

[0011] In order to solve the above-described problem, the needleless syringe according to the present invention comprises a main body and a nozzle part, the main body part provides a pressure of a predetermined size in the form of a pulse to a drug contained in a drug container within the nozzle part, and the nozzle part discharges the drug contained in the drug container in the form of a micro jet through a nozzle hole of the nozzle part according to the pulse-shaped pressure provided by the main body part, wherein the nozzle part is provided with an information part that stores information on equipment parameters for the operation of the needleless syringe as tag information at a nozzle part-side connection part mounted to a connection part of the main body part, and the main body part is provided with a sensor capable of recognizing the information part provided in the nozzle part, and includes a control part that automatically sets equipment parameters for controlling the operation of the needleless syringe based on the tag information recognized by the sensor.

[0012] Preferably, the information section is arranged at a predetermined position in the circumferential direction of the nozzle section side connection section, and the sensor can be arranged at a predetermined position in the circumferential direction of the main body section connection section.

[0013] Preferably, the connecting portion of the main body portion has an inner portion and an outer portion configured to surround the inner portion, and an insertion space is formed between the outer portion and the inner portion into which the nozzle portion-side connecting portion of the nozzle portion is inserted, and the sensor can be provided within the insertion space.

[0014] Preferably, the nozzle-side connecting portion is provided in a hollow cylindrical shape, a notch portion protruding toward the main body portion is formed at the end of the nozzle-side connecting portion, and a notch hole extending in the axial and circumferential directions of the connecting portion is formed at the outer cylinder of the connecting portion of the main body portion, and the notch portion can be configured to be inserted along the notch hole.

[0015] Preferably, the sensor can be set to recognize tag information of the information unit when the information unit installed in the nozzle unit is at a predetermined relative position in the circumferential direction and axial direction of the main body unit.

[0016] Preferably, the tag information stored in the information unit may include information on equipment parameters related to at least one of the injection depth, injection amount, injection speed, and number of injections of the drug.

[0017] Preferably, the tag information stored in the information unit may further include identification information of the needleless syringe and information about the drug contained in the drug container.

[0018] Preferably, the control unit may further include an input device capable of inputting user characteristic data related to at least one of the user's age, gender, drug injection site, and indication.

[0019] Preferably, the tip portion of the nozzle portion including the nozzle hole and the drug receiving portion can be configured to be detachably connected to each other.

[0020] Preferably, the information unit may be RFID, and the sensor may be an RFID sensor capable of recognizing RFID.

[0021] Preferably, a piston configured to be axially retractable within the main body to apply a pulse-shaped pressure to a drug contained in a drug receiving portion; a driving source for applying a pulse-shaped force to the piston so that the piston can be axially retractable; an encoder capable of detecting a real-time position of the piston; and a blocker capable of being displaced in the axial direction of the main body and for restricting an axial forward movement of the piston are provided, and the control portion calculates a stroke and a speed of the piston when the piston is advanced based on information of a real-time piston position measured by the encoder and information of a current position of the blocker, and controls an operation of the piston so that the stroke and the speed of the piston satisfy set equipment parameters.

[0022] Preferably, the control unit can control the driving source in any one of a first mode in which the forward speed of the piston is constant, a second mode in which the piston is stopped, and a third mode in which the forward speed of the piston changes over time.

[0023] In order to solve the above-described problem, the present invention provides a control method for a needleless syringe, which comprises a main body and a nozzle body, wherein the main body provides a pressure of a predetermined magnitude in the form of a pulse to a drug contained in a drug container within the nozzle body, and the nozzle body ejects the drug contained in the drug container in the form of a micro jet through a nozzle hole of the nozzle body according to the pulse-shaped pressure provided by the main body body, the control method comprising the steps of: mounting a nozzle-side connection part of the nozzle body to a connection part of the main body body; reading tag information regarding equipment parameters for the operation of the needleless syringe stored in an information part provided in the nozzle-side connection part using a sensor provided in the main body body; automatically setting the equipment parameters based on the tag information; and controlling the needleless syringe based on the set equipment parameters to eject the drug.

[0024] Preferably, the method may further include a step of determining whether the nozzle unit is connected to the main body unit based on whether the information unit is recognized by the sensor; and a step of transmitting an error message through a display device or a voice transmitting device when it is determined that the nozzle unit is not normally connected to the main body unit.

[0025] Preferably, the method may further include a step of determining whether the identification information of the needleless syringe stored in the tag information matches the identification information of the needleless syringe equipped with the nozzle portion; and a step of transmitting an error message through a display device or a voice transmitting device when the identification information of the needleless syringe stored in the tag information does not match the identification information of the needleless syringe equipped with the nozzle portion.

[0026] Preferably, if the identification information of the needleless syringe equipped with the nozzle portion is not recorded in the tag information, a step of storing the identification information in the tag information of the information portion through equipment provided in the main body portion may be further included.

[0027] Preferably, the method may further include a step of comparing the cumulative number of injections of the drug after the nozzle unit is mounted on the main body unit with a predetermined number of injections; and a step of transmitting a message for replacing the nozzle unit through a display device or a voice transmitting device when the cumulative number of injections is determined to be greater than or equal to the predetermined number of injections.

[0028] According to the present invention, by inserting a nozzle part into a main body part, an information part sensor of the main body part recognizes tag information of the information part provided in the nozzle part, and automatically sets a setting value for the operation of a needleless syringe based on the setting value stored in the tag information. Accordingly, the needleless syringe can be operated by automatically setting a setting appropriate for the type of drug without requiring the user to manually set the setting value for the operation of the needleless syringe according to the type of drug filled in the nozzle part. Accordingly, inconvenience to the user can be reduced, and the user does not need to know in advance the setting value appropriate for the drug to be used.

[0029] According to the present invention, when the RFID installed in the nozzle portion is at a predetermined relative position with respect to the main body portion, the RFID sensor is configured to recognize tag information. Accordingly, based on whether the RFID sensor recognizes the tag information, it is possible to determine whether the nozzle portion is at a predetermined position with respect to the main body portion, thereby determining whether the nozzle portion is installed in the correct position.

[0030] Figure 1 is a configuration diagram of a needleless syringe according to the present invention.

[0031] Figure 2 is a drawing for explaining the state in which the nozzle part and the main body part of the needleless syringe shown in Figure 1 are separated.

[0032] Fig. 3 is a cross-sectional view showing the configuration of the nozzle portion of the needleless syringe of Fig. 2 and the connecting portion of the main body portion coupled to the nozzle portion.

[0033] Figure 4 is a drawing for explaining the state in which the nozzle part and the connection part shown in Figure 3 are connected.

[0034] Fig. 5 is a cross-sectional view showing a part of the main body of the needleless syringe illustrated in Fig. 2.

[0035] Figure 6 is a photograph showing the structure of the main body shown in Figure 5 when viewed along the length direction of the needleless syringe.

[0036] FIG. 7 is a flowchart illustrating a method for setting parameters related to the operation of a needleless syringe using a needleless syringe according to the present invention.

[0037] FIG. 8 is a drawing illustrating a process of controlling a needleless syringe using parameters set according to the method according to FIG. 7.

[0038] Figure 9 is a drawing explaining feedback control for operating a needleless syringe according to the present invention to obtain a target injection amount, etc.

[0039] Figure 10 is a graph showing three different types of velocity profiles for changes in piston travel distance over time.

[0040] FIG. 11 is a drawing for explaining the position and speed control of a piston according to a preferred embodiment of the present invention.

[0041]

[0042] What each symbol represents is as follows:

[0043] 100: Main body 110: Solenoid coil

[0044] 120: Motion magnet 130: Piston

[0045] 200: Nozzle part 210: Nozzle hole

[0046] 220: Drug receiving section 230: Nozzle side connection section

[0047] 231: Notch 240: RFID

[0048] 300: Connection part 320: External part

[0049] 321: Insertion space 322: RFID sensor

[0050] 323: Notch hole 324: Internal cavity

[0051] 400: Control unit 410: Blocker

[0052] 420: Drive shaft 430: Screw joint

[0053] 440: Stepper motor 500: Encoder

[0054] 510: Motor Driver

[0055]

[0056] Hereinafter, a preferred embodiment of a needleless syringe according to the present invention will be described in detail with reference to the attached drawings.

[0057] FIG. 1 is a configuration diagram of a needleless syringe according to the present invention, FIG. 2 is a diagram for explaining a state in which the nozzle portion and the main body portion of the needleless syringe shown in FIG. 1 are separated, FIG. 3 is a cross-sectional view showing the configuration of the nozzle portion of the needleless syringe of FIG. 2 and the connecting portion of the main body portion coupled to the nozzle portion, and FIG. 4 is a diagram for explaining a state in which the nozzle portion and the connecting portion shown in FIG. 3 are connected.

[0058] As shown in Fig. 1, the needleless syringe according to the present invention has a main body (100) and a nozzle part (200).

[0059] In the example illustrated in FIG. 1, the main body (100) provides a pulse reciprocating motion of a moving magnet (120) provided inside the main body (100) by a driving force generated from a predetermined power source. In the example illustrated in FIG. 1, the main body (100) is provided with a solenoid coil (110) on the outer periphery, and provides a pulse reciprocating motion of the moving magnet (120) by periodically changing the direction of the current applied to the solenoid coil (110). When the moving magnet (120) moves forward by the magnetic field formed by the current applied to the solenoid coil (110), it collides with the piston (130) at the front, and as the piston (130) moves forward by this collision, it applies a predetermined pressure to the drug within the nozzle portion (200) described below. And, a spring (140) is provided as an elastic member on the inner wall of the main body (100) and the other end of the piston (130), so as to apply a force so that the piston (130) moves forward a certain distance and then moves back to its original position. However, the example illustrated in FIG. 1 is only a preferred embodiment of the present invention, and there is no limitation as long as it has a configuration that can apply a pressure in the form of a predetermined pulse to the drug filled inside the drug receiving portion (220) of the nozzle portion (200). For example, a configuration that forms power using compressed air or a spring and a motor instead of a solenoid coil may also be used.

[0060] The nozzle part (200) is formed as a hollow cylindrical member and has a drug receiving part (220) filled with a drug therein, and a nozzle hole (210) is formed at the tip. The nozzle part (200) discharges the drug contained in the drug receiving part (220) in the form of a microjet from the nozzle hole (210) according to the pulse-shaped pressure provided by the main body part (100). A hollow cylindrical connecting part (300) to which the nozzle part (200) is coupled is integrally formed at the front end of the main body part (100), and the nozzle part (200) is coupled to the main body part (100) through the connecting part (300). In the embodiment illustrated in FIG. 1, the nozzle tip part having the nozzle hole (210) through which the drug is discharged and the drug receiving part (220) are formed integrally, but the present invention is not limited to this embodiment. Preferably, the nozzle tip and the drug receiving portion (220) may be configured as separate components that can be in fluid communication with each other and configured to be detachable from each other. In this case, by configuring the drug receiving portion (220) as a replaceable component and the nozzle tip as a permanent component, when the drug in the drug receiving portion (220) is completely exhausted, only the drug receiving portion (220) can be separated from the needleless syringe and replaced.

[0061] Fig. 3 is a cross-sectional view showing the configuration of the nozzle portion of the needleless syringe of Fig. 2 and the connecting portion of the main body portion combined with the nozzle portion, and Fig. 4 is a drawing for explaining the state in which the nozzle portion and the connecting portion shown in Fig. 3 are connected.

[0062] As illustrated in Fig. 3, a cylindrical nozzle-side connection portion (230) is formed at the end portion of the main body (100) of the nozzle portion (200). In addition, a notch portion (231) protruding toward the main body (100) is formed at the end portion of the nozzle-side connection portion (230). An RFID (240) is provided on the inner side of the wall portion forming the connection portion (230) as an information portion that stores setting values ​​for the operation of the needleless syringe as tag information. The RFID (240) is located at a predetermined position in the circumferential direction of the inner wall of the nozzle-side connection portion (230). The setting values ​​for the operation of the needleless syringe include, for example, current values ​​and voltage values ​​applied to the solenoid coil (110) for driving the motion magnet (120), current pulse width, and the number of repeated injections per second. Furthermore, tag information may include not only the operating settings for the needleless syringe, but also identification information such as the serial number of the needleless syringe and information related to the drug contained in the nozzle unit (200). While the present invention discloses an RFID (240) as an example of an information unit, any configuration capable of recognizing the information contained therein through a predetermined sensor may be applied. For example, barcodes may also be included in the information unit of the present invention.

[0063] The connection part (300) is composed of an inner barrel part (324) configured to surround a piston (330) and an outer barrel part (320) configured to surround the inner barrel part (324). An insertion space (321) is formed between the inner barrel part (324) and the outer barrel part (320) into which the nozzle-side connection part (230) of the nozzle part (200) is inserted. In addition, an RFID sensor (322) is provided in the insertion space (321) as a sensor capable of recognizing an RFID (240) which is an information part provided in the nozzle part (200). Although the present invention discloses the RFID sensor (322) as a sensor, any configuration capable of recognizing information included in the information part may be applied. For example, a barcode sensor capable of recognizing a barcode, etc. may also be included in the sensor of the present invention. Like the RFID (240), the RFID sensor (322) is also located at a specific location in the circumferential direction of the insertion space (321).

[0064] Fig. 5 is a cross-sectional view showing a part of the main body of the needleless syringe shown in Fig. 2, and Fig. 6 is a photograph showing the structure of the main body shown in Fig. 5 when viewed along the longitudinal direction of the needleless syringe.

[0065] In the examples shown in FIGS. 5 and 6, a notch hole (323) extending in the axial and circumferential directions of the connection part (300) is formed in the outer cylinder (320) of the connection part (300), and a notch portion (231) formed at the end of the nozzle-side connection part (230) is inserted into the notch hole (323). Accordingly, when a user inserts the nozzle part (200) into the main body part (100) through the connection part (300) so that the notch portion (231) is inserted into the axial groove portion of the notch hole (323), and then relatively rotates the nozzle part (200) and the main body part (100) along the circumferential groove portion of the notch hole (323) so that the notch portion (321) moves along the notch hole (323), the nozzle part (200) is fixed to the main body part (100).

[0066] And, as described above, the RFID (240) installed in the nozzle portion (200) and the RFID sensor (322) installed in the connection portion (300) are each installed at specific positions in the circumferential direction. Therefore, according to a preferred embodiment of the present invention, when the RFID (240) installed in the nozzle portion (200) is at a predetermined relative position in the circumferential direction and axial direction of the main body portion (100) with respect to the main body portion (100), that is, when the notch portion (321) moves along the notch hole (323) and the nozzle portion (200) rotates to a predetermined position, the RFID sensor (322) can be set to recognize the tag information of the RFID (240). Accordingly, for example, a control unit (400) for controlling a solenoid coil (110) of a needleless syringe is provided, and the control unit (400) can determine whether the nozzle unit (200) is at a predetermined position with respect to the main body unit (100) by determining whether the tag information of the RFID sensor (322) is recognized. Through this, it is possible to automatically determine whether the nozzle unit (200) is mounted at the correct position. As described below, the control unit (400) automatically sets the setting values ​​for the operation of the needleless syringe based on the tag information of the RFID (240) recognized by the RFID sensor (322).

[0067] In this embodiment, the control unit (400) has a processor such as a CPU (Central Processing Unit), and may preferably be a PCB or the like that constitutes a control circuit for controlling the needleless syringe. The control unit (400) executes a predetermined control program to perform various processing and control operations of the needleless syringe. The control program may be stored in a separate storage device, such as a memory, provided within the control unit (400).

[0068] FIG. 7 is a flowchart illustrating a method for setting parameters related to the operation of a needleless syringe using a needleless syringe according to the present invention.

[0069] Referring to Fig. 7, when the user first turns on the power of the needleless syringe (step S10), the control unit (400) of the needleless syringe activates all functions except the spraying action (step S20). Then, when the user connects the nozzle unit (200) to the main body unit (100) through the connection unit (300), the control unit (400) of the needleless syringe recognizes whether the nozzle unit (200) is connected to the main body unit (100) based on whether the tag of the RFID (240) is recognized by the RFID sensor (322) (step S30). If the nozzle unit (200) is not recognized as being connected to the main body unit (100), the control unit (400) transmits an error message indicating that the nozzle unit (200) is not connected, for example, through a display device such as an LCD or a voice transmission device such as a speaker provided in the needleless syringe (S130).

[0070] Meanwhile, when it is recognized that the nozzle unit (200) is connected to the main body unit (100), the connection of the nozzle unit (200) is recorded in a storage device, etc., provided on the PCB of the control unit (400), and the connection of the nozzle unit (200) is indicated through the display device or voice transmission device mentioned above (S40).

[0071] Next, the control unit (400) recognizes the RFID tag through the RFID sensor (322) and determines whether the tag information can be recognized normally (step S50). If it is determined that the RFID is damaged or that some of the information stored in the RFID (240) has been lost, the control unit (400) transmits an error message indicating that the tag information cannot be recognized normally through the display device or voice transmission device (step S140).

[0072] Next, the control unit (400) checks whether the serial number (S / N) of the needleless syringe stored in the recognized tag information is not the serial number of this equipment but the serial number of another equipment. If it is determined that the serial number (S / N) of the needleless syringe stored in the recognized tag information is the serial number of another equipment, the control unit (400) transmits an error message through a display device or a voice transmission device, etc., indicating that the nozzle unit (200) does not correspond to the nozzle unit (200) used in this equipment (step S150).

[0073] Next, the control unit (400) determines whether or not information related to the serial number of the needleless syringe is not recorded in the recognized tag information (step S70). If it is determined that information related to the serial number of the needleless syringe is not recorded in the recognized tag information, the control unit (400) stores the serial number of the device in the tag information of the RFID (240) through a device such as NFC (Near Field Communication) (not shown), while recording identification information of the inserted nozzle unit (200), etc., in a storage device mounted on the PCB of the main body unit (100) (S160).

[0074] Meanwhile, if it is determined that information related to the serial number of the device is recorded in the recognized tag information, the control unit (400) recognizes parameter information related to the operation of the needleless syringe stored in the tag information of the RFID (240), and automatically sets the setting values ​​of each device for operating the needleless syringe (coil application voltage, current pulse width, number of repeated injections per second, etc.) based on the recognized parameter information (S80).

[0075] Meanwhile, the injection depth, injection amount, injection strength, etc. of the required drug need to be adjusted according to the patient's age, gender, target skin area, indication, etc. Therefore, when automatically setting the setting values ​​of each device in step S80, the user can selectively input the patient's characteristic data to be injected with the drug using the needleless syringe. In this case, the needleless syringe is equipped with a separate input device (not shown), and the user can selectively input the patient's characteristic data related to the patient's age, gender, target skin area, and indication through the input device. When the patient's characteristic data is input through the input device, the control unit (400) changes or adjusts the corresponding equipment parameters (coil application voltage, current pulse width, number of repetitions per second) according to the input information to match the input patient's characteristic data, and automatically resets the adjusted parameters to the equipment's setting values. In the present embodiment, the input device has an input device including a mouse and a keyboard, and inputs the information received by the user by operating the input device into the control unit (400).

[0076] Next, the control unit (400) recognizes whether the user has operated a spray switch, such as a foot switch, etc. (S90), and if it is determined that the spray switch is turned on, the control unit (400) operates a solenoid coil (110), etc., to spray a drug in the form of a microjet from the nozzle unit (200) using the method described above (S100).

[0077] And, after one injection is performed, the control unit (400) updates the number of injections and records information about the updated number of injections in a storage device mounted on the PCB of the main body (100). And, the control unit (400) determines whether the updated number of injections is less than a predetermined number of injections (N) (S120). Here, the predetermined number of injections (N) means the number of injections at which the drug contained in the drug containing portion (220) in the nozzle portion (200) is completely consumed. Information about the number of injections is also stored in the tag information of the RFID (240) and can be automatically set by recognizing the tag of the RFID through the RFID sensor (322). If it is determined that the updated number of injections is less than the predetermined number of injections (N), it is determined whether the injection switch is turned on again. And, if it is determined that the updated number of injections is greater than or equal to the predetermined number of injections (N), the control unit (400) displays a message indicating the need for replacement of the nozzle unit (200) externally through the display device or voice transmission device described above (S170).

[0078] FIG. 8 is a drawing explaining a process of controlling a needleless syringe using parameters set according to the method according to FIG. 7, and FIG. 9 is a drawing explaining feedback control for operating a needleless syringe according to the present invention to obtain a target injection amount, etc.

[0079] According to the embodiment illustrated in FIG. 8, for example, an encoder (500) capable of detecting the real-time position of the piston (130) is provided on the inner wall facing the piston (130) of the main body (100), so that when the piston (130) advances and retreats, the position of the piston (130) per hour is detected, and the result detected by the encoder (500) is transmitted to the control unit (400). In addition, a blocker (410) capable of limiting the stroke distance of the piston (130) when the piston (130) advances is provided in front of the main body (100). The blocker (410) is integrally provided with a screw joint (430) that drives forward and backward according to the rotation of the drive shaft (420) of the stepper motor (440), so that the blocker advances or retreats a predetermined distance based on the rotation direction and rotation speed of the stepper motor (440).

[0080] Meanwhile, in the control unit (400), the target injection amount and injection speed of the drug in the form of a micro jet to be ejected from the nozzle unit (200), and the stroke distance and speed of the piston to satisfy the same are transmitted from the tag information of the RFID (240) and stored in advance as described above.

[0081] Accordingly, the control unit (400) performs the PID control illustrated in FIG. 9 based on information about the target injection amount and injection speed of the drug and the stroke distance and speed of the piston to satisfy them, information about the actual piston position per hour transmitted from the encoder (500) and the current position of the blocker (410) based on the rotation speed of the stepper motor (14). That is, after one piston advance, the stroke and speed of the piston at the time of the piston advance are calculated based on the information about the piston position per hour measured through the encoder (510) and the information about the current position of the blocker (410) measured through the rotation speed measuring sensor of the stepper motor (14), and the error between the calculated value and the target value of the piston stroke distance and speed is calculated, and then the amount of current applied to the solenoid coil (110) and the control signal value applied to the stepper motor (440) are calculated so that the error becomes 0. Then, the power source and the motor drive source are controlled so that the calculated amount of current and the control signal are applied. This allows the piston's movement to be controlled to achieve a target value. Through feedback control, which repeats this process, drug injection can be performed according to the target injection amount and injection rate.

[0082] Figure 10 illustrates graphs illustrating three different types of velocity profiles for changes in piston travel distance over time.

[0083] In the speed profile of the example shown in (a), the stroke distance (D) of the piston (130) increases constantly over time (T). That is, the piston (130) moves at a constant speed. In the example shown in (b), the stroke distance (D) of the piston (130) is constant over time (T). That is, the piston (130) is at rest. Next, in (c), the stroke distance (D) of the piston (130) increases constantly over time (T), and then, after a certain period of time, a speed profile is shown in which the piston stroke per hour rapidly increases. According to the present invention, it is possible to control the piston (130) to have various types of speed profiles as described above using the tag information of the RFID.

[0084] The present invention relates to a needleless syringe having a main body and a nozzle part, wherein the main body part provides a pressure of a predetermined magnitude in the form of a pulse to a drug contained in a drug container within the nozzle part, and the nozzle part discharges the drug contained in the drug container in the form of a micro jet through a nozzle hole of the nozzle part according to the pulse-shaped pressure provided by the main body part, wherein an information part storing information on equipment parameters for the operation of the needleless syringe as tag information is provided at a nozzle part-side connection part mounted on a connection part of the main body part, and the main body part is provided with a sensor capable of recognizing the information part provided in the nozzle part, and a control part automatically setting equipment parameters for controlling the operation of the needleless syringe based on the tag information recognized by the sensor. According to the present invention, the needleless syringe can be operated by automatically setting settings suitable for the type of drug without requiring the user to manually set the setting values ​​for the operation of the needleless syringe according to the type of drug filled in the nozzle part. Therefore, inconvenience to the user can be reduced, and the user need not be aware of the setting values ​​suitable for the drug to be used in advance.

[0085] According to the present invention, the user does not need to set the operating parameters of the needleless syringe according to the characteristics of the drug to be injected using the needleless syringe. Instead, simply by attaching the nozzle to the main body, the equipment parameters can be automatically set to settings appropriate for the type of drug. Therefore, the parameter settings that are incorrectly set to those that are inappropriate for the characteristics of the drug can be prevented, and the user can eliminate the need to know the settings appropriate for the drug being used in advance.

Claims

1. A needleless syringe having a main body and a nozzle part, wherein the main body part provides a pressure of a predetermined size in the form of a pulse to a drug contained in a drug container within the nozzle part, and the nozzle part discharges the drug contained in the drug container in the form of a micro jet through a nozzle hole of the nozzle part according to the pressure in the form of a pulse provided by the main body part. Among the above nozzle parts, the nozzle part side connection part mounted on the connection part of the main body part is provided with an information part that stores information on equipment parameters for the operation of the needleless syringe as tag information, and the main body part is provided with a sensor that can recognize the information part provided in the nozzle part. A needleless syringe characterized by including a control unit that automatically sets equipment parameters for controlling the operation of the needleless syringe based on tag information recognized by the sensor.

2. In claim 1, A needleless syringe, wherein the information section is positioned at a predetermined position in the circumferential direction of the nozzle section connection section, and the sensor is positioned at a predetermined position in the circumferential direction of the main body section connection section.

3. In claim 2, The connecting portion of the above main body portion has an inner portion and an outer portion configured to surround the inner portion, and an insertion space is formed between the outer portion and the inner portion into which the connecting portion of the nozzle portion is inserted. A needleless syringe, wherein the sensor is provided within the insertion space.

4. In claim 3, The above nozzle-side connecting portion is provided in a hollow cylindrical shape, and a notch portion protruding toward the main body portion is formed at the end of the nozzle-side connecting portion. A needleless syringe, wherein a notch hole extending in the axial and circumferential directions of the connecting portion of the main body is formed in the outer cylindrical portion of the connecting portion, and the notch portion is configured to be inserted along the notch hole.

5. In claim 3, A needleless syringe, wherein the sensor is set to recognize tag information of the information unit when the information unit installed in the nozzle unit is at a predetermined relative position in the circumferential and axial directions of the main body unit.

6. In claim 1, A needleless syringe, wherein the tag information stored in the information section includes information on equipment parameters related to at least one of the injection depth, injection amount, injection speed, and injection number of times of the drug.

7. In claim 6, A needleless syringe, wherein the tag information stored in the information section further includes identification information of the needleless syringe and information about a drug contained in the drug container.

8. In claim 1, A needleless syringe further comprising an input device capable of inputting user characteristic data related to at least one of the user's age, gender, drug injection site, and indication into the control unit.

9. In claim 1, A needleless syringe, wherein the tip portion of the nozzle portion including the nozzle hole and the drug receiving portion are configured to be detachably coupled to each other.

10. In claim 1, A needleless syringe, wherein the above information unit is an RFID, and the sensor is an RFID sensor capable of recognizing RFID.

11. In claim 1, A piston configured to be axially retractable within the main body to apply pulse-shaped pressure to the drug contained in the drug receiving portion; A driving source for applying a pulse-shaped force to the piston so that the piston can advance and retreat in the axial direction; An encoder capable of detecting the real-time position of the piston; The above main body part is capable of being displaced in the axial direction, and has a blocker for limiting the axial forward movement of the piston, A needleless syringe, wherein the control unit calculates the stroke and speed of the piston when the piston advances based on information on the real-time piston position measured through the encoder and information on the current position of the blocker, and controls the operation of the piston so that the stroke and speed of the piston satisfy the set equipment parameters.

12. In claim 11, A needleless syringe, wherein the control unit controls the driving source in one of a first mode in which the forward speed of the piston is constant, a second mode in which the piston is stopped, and a third mode in which the forward speed of the piston changes over time.

13. A method for controlling a needleless syringe having a main body and a nozzle part, wherein the main body part provides a pressure of a predetermined size in the form of a pulse to a drug contained in a drug container within the nozzle part, and the nozzle part discharges the drug contained in the drug container in the form of a micro jet through a nozzle hole of the nozzle part according to the pressure in the form of a pulse provided by the main body part. A step of mounting a nozzle-side connection part of the nozzle part to a connection part of the main body part; A step of reading tag information regarding equipment parameters for the operation of a needleless syringe stored in an information unit provided in a nozzle-side connection unit using a sensor provided in the main body unit; A step of automatically setting the equipment parameters based on the above tag information, and A method for controlling a needleless syringe, characterized in that it comprises a step of controlling the needleless syringe to inject a drug based on set equipment parameters.

14. In claim 13, A step of determining whether the nozzle unit is connected to the main body unit based on whether the information unit is recognized by the sensor; and A method for controlling a needleless syringe, further comprising a step of transmitting an error message through a display device or a voice transmitting device when it is determined that the nozzle portion is not normally connected to the main body portion.

15. In claim 13, A step of determining whether the identification information of the needleless syringe stored in the above tag information matches the identification information of the needleless syringe on which the nozzle part is mounted; and A method for controlling a needleless syringe, further comprising a step of transmitting an error message through a display device or a voice transmission device when it is determined that the identification information of the needleless syringe stored in the tag information does not match the identification information of the needleless syringe on which the nozzle unit is mounted.

16. In claim 15, A method for controlling a needleless syringe, further comprising the step of storing the identification information in the tag information of the information unit through equipment provided in the main body unit, when the identification information of the needleless syringe on which the nozzle unit is mounted is not recorded in the tag information.

17. In claim 13, A step of comparing the cumulative number of times the drug is sprayed after the nozzle part is mounted on the main body part with a predetermined number of times; A method for controlling a needleless syringe, further comprising a step of transmitting a replacement message of the nozzle unit through a display device or a voice transmission device when it is determined that the cumulative number of injections is greater than or equal to a predetermined number of injections.

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