Operating Method of Chemical Liquid Transfer Device with Adjustable Discharge Amount

Abstract

The present invention relates to a method for injecting a drug using a drug injector, comprising the steps of: installing a drug injector such that when a drug is supplied to one side, a portion of the drug is bypassed and injected to the other side, and the remainder of the drug is stored in a storage balloon body, and when the storage balloon body is pressed by rotation with a rotary pressure body, the stored drug is added to the portion of the drug being bypassed and injected together to the other side; the step of installing a plurality of rotary pressure bodies installed to be pressed in the step of installing the drug injector, such that they have different pressing heights, and installing one of the rotary pressure bodies selected from the plurality of rotary pressure bodies considering the amount of additional drug to be injected to control the additional drug; and the step of connecting one end of the installed drug injector to a drug bag in which the drug is stored and connecting the other end to supply to a patient, such that a portion of the drug is injected to the patient through the drug injector and the remainder of the drug is stored in the storage balloon body. The method includes: a step of additionally injecting a portion of the additional liquid by combining it with a portion injected through the liquid injector when the selected rotary pressure body is rotated and the storage balloon body is pressed; and a step of returning the rotary pressure body to its original position after the additional injection is completed, so that a portion of the liquid is bypassed and the remaining liquid is stored.

Description

Technology Field

[0001] The present invention relates to a method for injecting a drug using a drug injector, and more specifically, to a method for injecting a drug using a drug injector that improves the accuracy and stability of drug supply by improving the structure of an injection device that temporarily stores a drug and additionally injects a drug through user operation, thereby physically controlling the amount of additional drug injected while maintaining the operating principle of the stored drug. Background Technology

[0002] Generally, because patients have impaired gastrointestinal digestion, necessary nutrients such as glucose are administered into their bloodstream. Additionally, various medications, including anticancer drugs, antibiotics, and painkillers for the treatment of diseases, are also injected into the bloodstream. In such cases, it is advisable to administer the nutrients or medications into the bloodstream at a precise dosage and a preset flow rate, tailored to the patient's condition.

[0003] Furthermore, unlike general medications, antibiotics administered to critically ill patients, such as those with cancer or leukemia, must be administered in minute, consistent amounts due to their nature. Similarly, analgesics given to relieve persistent pain in patients after surgery must also be administered in appropriate amounts at regular intervals.

[0004] The aforementioned analgesics are medications that relieve patient pain and must be administered by a nurse according to a set dosage at specific times based on a doctor's prescription whenever the patient feels pain; however, in cases where medical staff are unable to be on standby at all times and pain persists intermittently, an infusion device has been developed and is being used to administer additional medication through direct operation while limiting the additional dosage at specific times according to the patient's condition.

[0005] In particular, for patients prescribed patient-controlled analgesia, the system is configured to include a storage supply unit connected to a supply path for supplying medication that supplies medication after temporarily storing it, and a bypass unit that bypasses the storage supply unit to supply medication to the supply path, wherein the storage supply unit is configured to additionally supply medication stored by the patient's pressing operation to the supply path.

[0006] At this time, the storage supply unit operated to supply additional liquid medicine is operated according to a set time cycle so that the patient can add an appropriate amount of liquid medicine according to the time cycle, as the amount of liquid medicine stored varies according to the supply flow rate. However, if the flow rate at which liquid medicine is supplied to the storage supply unit changes, the amount of additional liquid medicine according to the time cycle changes, and thus a difference in the amount of additional liquid medicine may occur even within the same cycle.

[0007] Thus, when an additional amount different from the prescribed dosage is added, there was a problem of reduced safety in severe patients, as abnormal symptoms such as shock, temporary blood pressure elevation, or damage to the blood vessel walls occurred.

[0008] Accordingly, a technology has recently been developed and is being used to improve stability by maintaining the temporarily stored amount of the drug over time, by forming capillaries with a fine inner diameter to a length that achieves a preset flow rate in the storage distribution pipe supplying the drug to the temporary storage section of the drug injector and in the bypass pipe connected to the supply path to supply the drug, and installing a flow rate control means to regulate the flow rate as the drug passes through the capillaries.

[0009] Here, a storage body connected to the storage and distribution pipe of a conventional drug injection device is in the form of a balloon, through which the drug is injected by a pressing operation. This presents a structure in which the drug is injected by the user's pressing while an accurate solution is stored according to time intervals.

[0010] As such, conventional drug injection devices were developed with technology to ensure accuracy in drug injection and prevent over-injection, but as the amount of drug injected at once by user operation was limited by the load, it took a long time and was inconvenient to have to operate multiple times to inject the amount desired by the user.

[0011] In other words, when the balloon storage capacity is increased to increase the injection volume of the drug injector in the conventional technology, the pressure applied during injection increases proportionally to the expanded volume. Consequently, for patients with low pressing force, there was a problem where the injection volume was smaller than the set amount due to a decrease in pressing force.

[0012] In addition, conventional drug injectors had a problem in that the additional supply amount provided by the push operation was fixed, so in order to adjust the additional amount of drug, it was necessary to replace the drug injector with one of a different capacity. Prior art literature

[65535] Patent Document 1: Korean Registered Patent Publication No. 10-1234567 (Registered March 15, 2019, Title of Invention: Drug Solution Injection Volume Control Device) The problem to be solved

[0013] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a method of operation for a drug liquid transfer device that prevents malfunction caused by external force when supplying the drug liquid by rotational operation while temporarily storing the drug liquid and supplying it additionally by user operation, and easily adjusts the additional injection amount by adjusting the pressing depth of the operating body pressed by rotation through replacement.

[0014] The objectives of the present invention are not limited to those mentioned above, and other unmentioned objectives will be clearly understood from the description below. means of solving the problem

[0015] To achieve the above objective, a method of operating a drug solution transfer device according to one embodiment of the present invention comprises the steps of: installing a drug solution injector such that when a drug solution is supplied to one side, a portion of the drug solution is bypassed and injected to the other side, and the remainder of the drug solution is stored in a storage balloon body, and when the storage balloon body is pressed by rotation with a rotary pressurizing body, the stored drug solution is added to the portion of the drug solution that is bypassed and injected together to the other side; the rotary pressurizing body installed to be pressed in the step of installing the drug solution injector is provided in a plurality such that it has different pressing heights, and one rotary pressurizing body selected from the plurality of rotary pressurizing bodies is installed to control the additional drug solution being injected, taking into account the amount of additional drug solution; and connecting one end of the installed drug solution injector to a drug solution bag in which the drug solution is stored and connecting the other end to supply to a patient, such that a portion of the drug solution is injected to the patient through the drug solution injector and the remainder of the drug solution is stored in the storage balloon body. The method includes the step of additionally injecting the additional liquid by combining the additional liquid injected through the liquid injector with the portion of the liquid injected when the selected rotary pressurizing body is rotated and the storage balloon body is pressed; and the step of returning the rotary pressurizing body to its original position after the additional injection is completed so that some of the liquid is bypassed and the remaining liquid is stored.

[0016] In addition, the step of installing the above-mentioned drug injection device may be configured such that the drug supplied to one side is branched from the drug supply unit located inside the housing, a portion of which is bypassed and injected to the other side, the remaining drug that is branched from the drug supply unit is supplied to and stored in the storage balloon body, and when the rotary pressurizing body is rotated, the stored drug is pressed while the stored drug is combined with a portion of the drug in the drug supply unit and additionally injected.

[0017] And, the step of installing the above-mentioned liquid injection device may include: a step of connecting the liquid supplied to one side to a branch pipe and a supply pipe located in a housing space formed inside a housing body, and installing the connection so that a portion branched through the branch pipe is injected to the other side through a combined pipe connected to a bypass pipe; a step of installing the remaining liquid branched from the branch pipe to be supplied to the storage balloon body through an additional supply space and a storage distribution pipe; a step of installing the rotary pressure body that presses by rotation at the position where the storage balloon body of the housing body presses; and a step of connecting the additional supply space and the combined pipe to an additional supply pipe so that when the storage balloon body is pressed by the rotary pressure body, additional liquid injected into the storage distribution pipe is additionally supplied to the combined pipe.

[0018] In addition, the step of controlling the additionally injected liquid medicine can be controlled by selecting and installing the rotary pressurizing body of a step having a pressing depth corresponding to the amount of additional liquid medicine to be injected desired by the user, wherein the depth of the rotary pressurizing body, installed at the position where the storage balloon body of the housing body is pressed by rotation, is provided differently in multiple stages.

[0019] In addition, the step of storing the liquid medicine can be performed by branching the liquid medicine supplied from one side into the branch pipe of the liquid medicine supply unit, and supplying the remaining liquid medicine branched from the branch pipe to the storage balloon body connected to the storage distribution pipe.

[0020] Additionally, the step of injecting additional liquid medicine may be performed by installing a rotational support hole into which the rotational pressure body is inserted at a position where the storage balloon body is pressed in the housing body of the housing part, and by installing it to rotate while gripping a handle projection protruding from one side of the rotational pressure body at a position exposed to the outside, and by forming a wavy rotational support groove including a crest-shaped support groove and a valley-shaped support groove on the inner surface of the rotational support hole, and by providing a pressure insertion projection protruding from the outer circumference of the rotational pressure body and inserted into the wavy rotational support groove so that the rotational pressure body is guided and pressed in the wavy rotational support groove, the pressure insertion projection may be installed at a plurality of positions spaced apart at a predetermined interval from the one side where the handle projection is located on the outer circumference of the rotational pressure body to the other side where it is pressed, and by setting each installation position in stages and selecting a stage in the step of adjusting the additional liquid medicine to be injected, the amount of additional liquid medicine injected can be adjusted by pressing at a pressing depth according to the selected stage.

[0021] In addition, the step of injecting additional liquid medicine may be performed by installing a rotational support hole into which the rotational pressure body is inserted at a position where the storage balloon body is pressed in the housing body of the housing part, and by installing it to rotate while gripping a handle projection protruding from one side of the rotational pressure body at a position exposed to the outside, and by providing a rotational support projection protruding in the direction of the center from the inner surface of the rotational support hole, and by providing a wave-shaped pressure groove including a crest-shaped pressure groove and a valley-shaped pressure groove on the outer circumference of the rotational pressure body so that the rotational support projection is inserted therein and is installed to be guided in a wave shape by rotation and pressed, and the wave-shaped pressure groove may be formed such that the crest-shaped support groove and the valley-shaped support groove each have a plurality of phase differences with different gaps from the other side, which is the position where the handle projection is pressed, and the position of the gap according to each phase difference is set in stages, and in the step of adjusting the additional liquid medicine to be injected, a stage is selected, and the amount of additional liquid medicine injected can be adjusted by pressing at a pressing depth according to the selected stage.

[0022] In addition, the step of additionally injecting the liquid medicine may be configured such that a rotational support hole into which the rotary pressure body is inserted is installed in the housing body of the housing part at a position where the storage balloon body is pressed, and the rotary pressure body may be installed to be operated by rotation while gripping a handle projection protruding from an externally exposed position on one side thereof, and a rotary support projection may be provided protruding in a central direction from the inner surface of the rotational support hole, and the rotary support projection may be provided to be inserted into a corrugated pressure groove including a crest-shaped pressure groove and a valley-shaped pressure groove on the outer circumference of the rotary pressure body so that it is guided in a corrugated shape by rotation and pressed, and the rotary pressure body may be formed in multiple quantities such that the distance from the lowest point of the corrugated pressure groove to the other side of the rotary pressure body is different from the one side where the handle projection is located to the other side where it is pressed, and each of the rotary pressure bodies formed at different distances is set in stages, and a stage can be selected in the step of adjusting the additionally injected liquid medicine, and the amount of additional liquid medicine injected is adjusted while injecting by pressing at a pressing depth according to the selected stage. It is possible.

[0023] In addition, the step of returning to the original position allows the liquid to be supplied back to the storage balloon body and stored, and then injected again through the bypass tube, once the pressure on the rotary pressurizing body is removed by rotation after additional liquid has been injected.

[0024] Specific details for achieving the above objective will become clear by referring to the embodiments described in detail below together with the attached drawings.

[0025] However, the present invention is not limited to the embodiments disclosed below, but can be configured in various different forms, and these embodiments are provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. Effects of the invention

[0026] According to one of the means for solving the problem of the present invention described above, according to an embodiment of the present invention, when supplying a liquid medicine by rotational operation while temporarily storing the liquid medicine by user operation, the liquid medicine is supplied, thereby preventing malfunction caused by external force, and the additional injection amount is easily adjusted by adjusting the pressing depth of the operating body pressed by rotation through replacement. Brief explanation of the drawing

[0027] Figure 1 is a process diagram showing a method for injecting a drug using the drug injector of the present invention. FIG. 2 is a front view showing a drug injector according to the drug injection method using the drug injector of FIG. 1. Figure 3 is a side view showing a drug injector according to the drug injection method using the drug injector of Figure 1. Figure 4 is a configuration diagram showing the state of a drug injector being pressed by rotation according to the drug injection method using the drug injector of Figure 1. Figure 5 is a usage state diagram showing the drug storage step in the drug injection method using the drug injector of Figure 1. Figure 6 is a usage diagram showing the additional drug injection step among the drug injection methods using the drug injector of Figure 1. FIG. 7 is a perspective view showing a part of a drug injector that is pressed by the rotational operation of a rotary pressurizing body according to the drug injection method using the drug injector of FIG. 1. FIG. 8 is a schematic diagram showing a rotary pressure body having different pressing depths of FIG. 7. FIG. 9 is a perspective view showing a part that is pressed by rotational operation according to another embodiment of a rotary pressurizing body in a drug injector according to the drug injection method using the drug injector of FIG. 1. FIG. 10 is a schematic diagram showing a rotary pressure body having different pressing depths of FIG. 9. FIG. 11 is a schematic diagram showing another embodiment of a rotary pressurizing body having different pressing depths of FIG. 9. Specific details for implementing the invention

[0028] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0029] In describing the present invention, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the invention, such detailed description is omitted. Furthermore, numbers used in the description of this specification (e.g., First, Second, etc.) are merely identification symbols to distinguish one component from another.

[0030] In addition, when a component is described in this specification as being "connected" or "connected" to another component, it should be understood that the component may be directly connected to or directly connected to the other component, but unless otherwise specifically stated, it may also be connected or connected through another component in between.

[0031] The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification and do not inherently possess distinct meanings or roles. Furthermore, to clearly explain the invention, parts unrelated to the description have been omitted from the drawings, and the width, length, thickness, etc., of components in the drawings may be exaggerated for convenience. Throughout the specification, identical reference numerals indicate identical components.

[0032] Hereinafter, specific details for implementing the present invention will be described with reference to the attached drawings.

[0033] FIG. 1 is a process diagram showing a method of injecting a drug using a drug injector according to the present invention, FIG. 2 is a front view showing a drug injector according to the method of injecting a drug using a drug injector according to FIG. 1, FIG. 3 is a side view showing a drug injector according to the method of injecting a drug using a drug injector according to FIG. 1, FIG. 4 is a configuration diagram showing a state in which a drug injector according to the method of injecting a drug using a drug injector according to FIG. 1 is pressed by rotation, FIG. 5 is a usage state diagram showing a drug storage step during the method of injecting a drug using a drug injector according to FIG. 1, FIG. 6 is a usage state diagram showing an additional drug injection step during the method of injecting a drug using a drug injector according to FIG. 1.

[0034] Referring to FIGS. 1 to 6, the method of injecting a drug using a drug injector according to the present invention relates to a method of injecting a drug using a drug injector that prevents malfunction caused by external force by supplying the drug by rotational operation while temporarily storing the drug and supplying it additionally by user operation, and easily adjusts the additional injection amount by adjusting the pressing depth of the operating body pressed by rotation by replacement.

[0035] The above-described method for injecting a drug using a drug injector includes a drug injector installation step (S10), an additional injection amount adjustment step (S20), a drug storage step (S30), an additional drug injection step (S40), and a return injection step (S50).

[0036] The step of installing a drug injection device (S10) is a step of installing a drug injection device (110) in which, when a drug is supplied to one side, a portion of the drug is bypassed and injected to the other side, and the remaining drug is stored in a storage balloon body (131), and when the storage balloon body (131) is pressed by rotation with a rotary pressurizing body (132), the stored drug is added to the portion of the drug that is bypassed and injected together to the other side.

[0037] That is, the liquid medicine supplied to one side is branched from the liquid medicine supply unit (110) located inside the housing unit (120), a portion of which is bypassed and injected to the other side, and the remaining liquid medicine branched from the liquid medicine supply unit (110) is supplied to and stored in the storage balloon body (131), and when the rotary pressurizing body (132) is rotated, the stored liquid medicine is pressed while the stored liquid medicine is combined with the portion of liquid medicine bypassed to the liquid medicine supply unit (110) and additionally injected.

[0038] The drug injection device installation step (S10) includes a drug injection device connection installation step (S11), a drug storage installation step (S12), a rotary pressurizer installation step (S13), and a drug additional supply installation step (S14).

[0039] The drug injection device connection installation step (S11) is a step in which the drug supplied to one side is connected to a branch pipe (112) and a supply pipe (111) located in a housing space (122) formed inside a housing body (121), and a portion branched through the branch pipe (112) is connected to a bypass pipe (115) and then connected to an injection pipe (117) to be injected to the other side.

[0040] The liquid storage installation step (S12) is a step in which the remaining liquid branched from the branch pipe (112) is supplied to the storage balloon body (131) through the additional supply space (112a) via the storage distribution pipe (113) for storage installation.

[0041] The rotary pressure body installation step (S13) is a step of installing a rotary pressure body (132) that presses by rotation to a position pressing the storage balloon body (131) of the housing body (121).

[0042] The additional liquid supply installation step (S14) is a step of connecting the additional supply space (112a) and the combining pipe (116) to the additional supply pipe (111) so that when the storage balloon body (131) is pressed by the rotary pressurizing body (132), the additional liquid injected into the storage distribution pipe (113) is additionally supplied to the combining pipe (116).

[0043] The additional injection amount adjustment step (S20) is a step in which a plurality of rotary pressure bodies (132) installed to be pressed in the drug injection device installation step (S10) are provided to have different pressing heights, and one rotary pressure body (132) selected from the plurality of rotary pressure bodies (132) is installed to adjust the additional drug amount injected, taking into consideration the additional drug amount.

[0044] That is, the rotary pressure body (132), which is installed at the position where the storage balloon body (131) of the housing body (121) is pressed, is provided with different depths of pressure by rotation in multiple stages, and the additionally injected liquid can be controlled by selecting and installing the rotary pressure body (132) of the stage having a pressure depth according to the amount of additional liquid injection desired by the user.

[0045] In other words, the additional injection amount is controlled by the pressing depth of the rotary pressurizing body (132) pressing the storage balloon body (131). The rotary pressurizing body (132) is manufactured in multiple units having different pressing depths, and the additional injection amount can be controlled by selecting and installing a rotary pressurizing body (132) having a pressing depth according to the additional liquid injection amount desired by the user among the manufactured rotary pressurizing bodies (132).

[0046] The drug solution storage step (S30) is a step in which one end of the installed drug solution injector (110) is connected to a drug solution bag in which the drug solution is stored, and the other end is connected to supply to the patient, so that a portion of the drug solution is injected into the patient through the drug solution injector (110), and the remainder of the drug solution is stored in the storage balloon body (131).

[0047] That is, the liquid medicine supplied from one side is branched out at the branch pipe (112) of the liquid medicine supply unit (110), and the remaining liquid medicine branched out at the branch pipe (112) is supplied to and stored in a storage balloon body (131) connected to a storage distribution pipe (113).

[0048] FIG. 7 is a perspective view showing a part of a liquid injection device that is pressed by the rotational operation of a rotary pressurizing body according to the liquid injection method using the liquid injection device of FIG. 1, and FIG. 8 is a configuration diagram showing a rotary pressurizing body having different pressing depths of FIG. 7.

[0049] Referring to FIGS. 7 and 8, this is a configuration diagram showing a plurality of rotary pressurizing bodies (132) with different pressing depths in the additional injection step (S40) of the process of the drug injection method using the drug injection device of FIG. 1.

[0050] The additional drug injection step (S40) is a step in which, when the selected rotary pressurizing body (132) is rotated, the storage balloon body is pressed and the additional drug is combined with a portion injected through the drug injection device (110) to perform additional injection.

[0051] That is, a rotational support hole (123) into which a rotational pressure body (132) is inserted is installed in the housing body (121) of the housing part (120) at a position where the storage balloon body (131) is pressed, and is installed to rotate while gripping a handle projection (133) protruding from one side of the rotational pressure body (132) at a position exposed to the outside.

[0052] Additionally, a wave-shaped rotational support groove (124) including a floor-shaped support groove (125) and a valley-shaped support groove (126) is formed on the inner surface of the rotational support hole (123), and a pressure insertion projection (134) protruding from the outer circumference of the rotational pressure body (132) and inserted into the wave-shaped rotational support groove (124) is provided so that the rotational pressure body (132) is guided and pressed in the wave-shaped rotational support groove (124).

[0053] Additionally, the pressure insertion projection (134) is installed at multiple locations spaced apart from the other side, which is the position where the handle projection (133) is located on the outer circumference of the rotary pressure body (132) at a predetermined interval, and each installation location is set in stages, and in the additional injection amount control step (S20) where the additional injection amount is additionally injected, a stage is selected, and the injection amount of the additional liquid is controlled by pressing at a pressing depth according to the selected stage.

[0054] In representing a plurality of rotary pressure bodies (132), (a) is a first step in which a pressure insertion projection (134) is located on one upper side of the outer circumference of the rotary pressure body (132), and is installed to set the pressing depth to the maximum when pressurized by rotation so as to inject the maximum amount of additional injection.

[0055] (b) is installed such that a pressure insertion projection (134) is positioned on one side of the outer circumference of the rotary pressure body (132) in the second stage, and the pressure depth is set to the middle when pressure is applied by rotation to inject an additional amount of intermediate injection.

[0056] (c) is a three-stage rotating pressure body (132) with a pressure insertion projection (134) located at one lower end of the outer circumference, installed to inject a minimum amount of additional injection depth when pressure is applied by rotation.

[0057] Among the rotary pressurizing bodies (132) having different pressing depths according to the steps described above, the additional amount of liquid injected can be selectively installed to adjust and supply the additional amount of liquid injected.

[0058] FIG. 9 is a perspective view showing a part that is pressed by rotational operation according to another embodiment of a rotary pressurizing body in a drug injection device according to the drug injection method using the drug injection device of FIG. 1, and FIG. 10 is a configuration diagram showing a rotary pressurizing body having different pressing depths of FIG. 9.

[0059] Referring to FIGS. 9 and 10, this is a configuration diagram showing another embodiment of a plurality of rotary pressurizing bodies (132) with different pressing depths in the additional injection step (S40) of the process of the drug injection method using the drug injection device of FIG. 1.

[0060] The additional injection step (S40) of the liquid medicine is installed by installing a rotational support hole (123) into which a rotational pressure body (132) is inserted at a position where the storage balloon body (131) is pressed in the housing body (121) of the housing part (120), and is installed to rotate while gripping a handle projection (133) protruding from one side of the rotational pressure body (132) at a position exposed to the outside.

[0061] Additionally, a rotational support projection (127) is provided protruding in the direction of the center from the inner surface of the rotational support hole (123), and the rotational support projection (127) is provided to be inserted into a wave-shaped pressure groove (135) that includes a crest-shaped pressure groove (136) and a valley-shaped pressure groove (137) on the outer circumference of the rotational pressure body (132), so that it is installed to be guided in a wave shape and pressed by rotation.

[0062] And, the wave-shaped pressure groove (135) is formed such that the floor-shaped support groove (125) and the valley-shaped support groove (126) have different gaps and multiple phase differences on the other side, which is the position where the handle projection (133) is pressed from one side, and the position of the gap according to each phase difference is set in stages. In the step (S20) of adjusting the additional drug liquid being injected, the stage is selected, and the amount of additional drug liquid injected can be adjusted by pressing at the pressing depth according to the selected stage.

[0063] In showing a plurality of rotary pressure bodies (132), (a) is installed in the first stage so that a floor-shaped support groove (125) and a valley-shaped support groove (126) are installed on the outer circumference of the rotary pressure body (132) to maximize the pressing depth during rotational operation due to a phase difference having a maximum gap on one side and the other side, thereby injecting a maximum amount of additional injection.

[0064] (b) is installed in two stages so that a floor-shaped support groove (125) and a valley-shaped support groove (126) are installed on the outer circumference of the rotary pressure body (132) in such a way that the pressing depth is set in the middle during rotational operation due to a phase difference having an intermediate gap on one side and the other side, thereby injecting an intermediate amount of additional injection.

[0065] (c) is installed in three stages so that the floor-shaped support groove (125) and the valley-shaped support groove (126) on the outer circumference of the rotary pressure body (132) have a minimum gap between one side and the other side due to a phase difference, thereby setting the pressing depth to the minimum when rotating, so as to inject the minimum amount of additional injection.

[0066] Among the rotary pressurizing bodies (132) having different pressing depths according to the steps described above, the additional amount of liquid injected can be selectively installed to adjust and supply the additional amount of liquid injected.

[0067] FIG. 11 is a schematic diagram showing another embodiment of a rotary pressurizing body having different pressing depths of FIG. 9.

[0068] Referring to FIG. 11, this is a configuration diagram showing another embodiment of a plurality of rotary pressurizing bodies with different pressing depths in the additional injection step (S40) of the process of the drug injection method using the drug injection device of FIG. 1.

[0069] The additional injection step (S40) of the liquid medicine is installed by installing a rotational support hole (123) into which a rotational pressure body (132) is inserted at a position where the storage balloon body (131) is pressed in the housing body (121) of the housing part (120), and is installed to rotate while gripping a handle projection (133) protruding from one side of the rotational pressure body (132) at a position exposed to the outside.

[0070] Additionally, a rotational support projection (127) is provided protruding in the direction of the center from the inner surface of the rotational support hole (123), and the rotational support projection (127) is provided to be inserted into a wave-shaped pressure groove (135) that includes a crest-shaped pressure groove (136) and a valley-shaped pressure groove (137) on the outer circumference of the rotational pressure body (132), so that it is installed to be guided in a wave shape and pressed by rotation.

[0071] And, the rotary pressure body (132) is formed in a plurality of different quantities, with the distance from the lowest point of the wavy pressure groove (135) to the other side of the rotary pressure body (132) being pressed from the one side where the handle projection (133) is located to the other side, and each rotary pressure body (132) formed at a different distance is set in stages, and in the step (S20) of adjusting the additionally injected medicine, a stage is selected, and the amount of additional medicine injected can be adjusted and injected by pressing at a pressing depth according to the selected stage.

[0072] In representing a plurality of rotary pressure bodies (132), (a) is installed in the first stage to set the pressing depth to the maximum during rotational operation by the maximum distance from the lowest point of the corrugated pressure groove (135) on the outer circumference of the rotary pressure body (132) to the other side of the rotary pressure body (132), thereby injecting the maximum amount of additional injection.

[0073] (b) is installed in two stages to inject an intermediate amount of additional injection by setting the pressing depth in the middle during rotational operation due to the distance from the lowest point of the wave-shaped pressure groove (135) on the outer circumference of the rotary pressure body (132) to the other side of the rotary pressure body (132).

[0074] (c) is installed in three stages to inject a minimum amount of additional injection by setting the pressing depth to a minimum during rotational operation due to the minimum distance from the lowest point of the corrugated pressure groove (135) on the outer circumference of the rotary pressure body (132) to the other side of the rotary pressure body (132).

[0075] Among the rotary pressurizing bodies (132) having different pressing depths according to the steps described above, the additional amount of liquid injected can be selectively installed to adjust and supply the additional amount of liquid injected.

[0076] The return injection step (S50) is a step in which, after completing the additional injection, the rotary pressurizing body (132) is operated back to its original position to bypass some of the liquid medicine and return it to its original position so that the remaining liquid medicine is stored.

[0077] That is, after additional drug liquid is injected, when the pressure is removed by rotation of the rotary pressure body (132), the drug liquid is supplied back to the storage balloon body (131) for storage and then injected again through the bypass tube (115).

[0078] The above description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention.

[0079] Accordingly, the embodiments disclosed in this invention are intended to explain, not limit, the technical concept of the invention, and the scope of the technical concept of the invention is not limited by these embodiments.

[0080] The scope of protection of the present invention shall be interpreted by the claims below, and all technical ideas within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0081] <Explanation of Symbols for Major Parts of the Drawing> 100 : Drug injector 110 : Drug supply unit 111: Supply pipe 112: Branch pipe 112a : Additional supply space 113 : Storage and distribution pipe 114: Additional supply pipe 115: Bypass pipe 116 : Joining pipe 117 : Injection pipe 120 : Housing part 121 : Housing body 122 : Housing space 123 : Rotation support hole 124: Wave-shaped rotational support groove 125: Floor-shaped support groove 126 : Bone-shaped support groove 127 : Rotational support projection 130 : Storage injection part 131 : Storage balloon body 132 : Rotating pressure body 133 : Handle projection 134: Pressure insertion projection 135: Waveform pressure groove 136 : Floor-type pressure groove 137 : Valley-type pressure groove

Claims

Claim 1 A step of installing a drug injector such that when a drug solution is supplied to one side, a portion of the drug solution is bypassed and discharged to the other side, and the remainder of the drug solution is stored in a storage balloon body, and when the storage balloon body is pressed by rotation with a rotary pressurizing body, the stored drug solution is added to the portion of the drug solution being bypassed and discharged together to the other side; a step of installing a plurality of rotary pressurizing bodies installed to be operated by pressing in the step of installing the drug injector, such that they have different pressing heights, and installing one of the rotary pressurizing bodies selected by considering the amount of additional drug solution to be added among the plurality of rotary pressurizing bodies to control the additionally discharged drug solution; a step of connecting one end of the installed drug injector to a drug bag containing the drug solution and the other end to an outlet to supply to a patient, such that a portion of the drug solution is discharged to the patient through the drug injector and the remainder of the drug solution is stored in the storage balloon body; a step of operating the selected rotary pressurizing body to rotate, thereby pressing the storage balloon body and adding the additional drug solution to the portion discharged through the drug injector to discharge additionally. A method of operating a drug transfer device capable of controlling the amount of drug discharge, comprising the step of operating the rotary pressurizing body back to its original position after completing additional discharge so that some of the drug liquid is bypassed and the remaining drug liquid is stored. Claim 2 In claim 1, the step of installing the liquid injection device is a method of operating a liquid transfer device in which the liquid supplied to one side is branched from the liquid supply unit located inside the housing unit, a portion is bypassed and discharged to the other side, the remaining liquid branched from the liquid supply unit is supplied to and stored in the storage balloon body, and when the rotary pressurizing body is rotated, the stored liquid is pressed while combining with a portion of the liquid in the liquid supply unit and additionally discharged. Claim 3 In claim 2, the step of installing the liquid injection device comprises: a step of connecting and installing the liquid supplied to one side to a branch pipe and a supply pipe located in a housing space formed inside a housing body, and a portion branched through the branch pipe to be discharged to the other side through a discharge pipe via a combined pipe connected to a bypass pipe; a step of installing the remaining liquid branched from the branch pipe to be supplied to the storage balloon body through an additional supply space and a storage distribution pipe; a step of installing the rotary pressurizing body that presses by rotation at the position of the storage balloon body of the housing body; and a step of connecting the additional supply space and the combined pipe to an additional supply pipe so that when the storage balloon body is pressed by the rotary pressurizing body, the additional liquid supplied to the storage distribution pipe is additionally supplied to the combined pipe; a method of operating a liquid transfer device. Claim 4 A method of operation of a liquid transfer device according to claim 1, wherein the step of controlling the additionally discharged liquid is provided such that the depth to which the rotary pressurizing body, installed at the position where the storage balloon body of the housing body is pressed by rotation, is provided differently in a plurality of stages, and the additionally discharged liquid is controlled by selecting and installing the rotary pressurizing body of the stage having a pressing depth according to the discharge amount of additional liquid desired by the user. Claim 5 In claim 1, the step of storing the liquid medicine is a method of operating a liquid medicine transfer device in which the liquid medicine supplied from one side is branched into a branch pipe of a liquid medicine supply unit located inside a housing unit, and the remaining liquid medicine branched from the branch pipe is supplied to and stored in the storage balloon body connected to the storage distribution pipe. Claim 6 In claim 1, the step of additionally discharging the liquid medicine comprises installing a rotary support hole in the housing body of the housing part of the liquid medicine injector, into which the rotary pressure body is inserted at a position where the storage balloon body is pressed, and installing the rotary pressure body so as to be rotated while gripping a handle projection protruding from one side of the rotary pressure body at a position exposed to the outside, forming a corrugated rotary support groove including a crest-shaped support groove and a valley-shaped support groove on the inner surface of the rotary support hole, and providing a pressure insertion projection protruding from the outer circumference of the rotary pressure body and inserted into the corrugated rotary support groove so that the rotary pressure body is guided and pressed in the corrugated rotary support groove, and the pressure insertion projection is installed at a plurality of positions spaced apart from the one side where the handle projection is located on the outer circumference of the rotary pressure body at a predetermined interval to the other side, which is the position where it is pressed, and each installation position is set in stages, and a stage is selected in the step of controlling the additionally discharged liquid medicine, and the amount of additional liquid medicine discharged is controlled and discharged by pressing at a pressing depth according to the selected stage. Claim 7 In claim 1, the step of additionally discharging the liquid medicine comprises installing a rotational support hole into which the rotary pressurizing body is inserted at a position where the storage balloon body is pressed in the housing body of the housing part of the liquid medicine injector, and installing it to be operated by rotation while gripping a handle projection protruding at a position exposed to the outside on one side of the rotary pressurizing body, and providing a rotational support projection protruding in the direction of the center from the inner surface of the rotational support hole, and providing it so that the rotational support projection is inserted into a wavy pressurizing groove including a crest-shaped pressurizing groove and a valley-shaped pressurizing groove on the outer circumference of the rotary pressurizing body so that it is guided in a wavy manner by rotation and pressed, wherein the wavy pressurizing groove is formed such that the crest-shaped support groove formed on the inner surface of the rotational support hole and the valley-shaped support groove formed on the inner surface of the rotational support hole have multiple phase differences with different gaps from the other side, which is the position where the handle projection is pressed on the one side where the handle projection is located, and the position of the gap formed according to each phase difference is set in stages, and a stage is selected in the step of controlling the additionally discharged liquid medicine, and additionally by pressing with a pressing depth according to the selected stage Method of operating a drug solution transfer device that discharges while controlling the discharge amount of the drug solution. Claim 8 In claim 1, the step of additionally discharging the liquid medicine comprises installing a rotational support hole in the housing body of the housing part of the liquid medicine injector, into which the rotary pressure body is inserted at a position where the storage balloon body is pressed, and installing the rotary pressure body to be operated by rotation while gripping a handle projection protruding from an externally exposed position on one side of the rotary pressure body, and providing a rotary support projection protruding in a central direction from the inner surface of the rotary support hole, and providing the rotary support projection to be inserted into a corrugated pressure groove including a crest-shaped pressure groove and a valley-shaped pressure groove on the outer circumference of the rotary pressure body so as to be guided in a corrugated shape by rotation and pressed, wherein the rotary pressure body is formed in a plurality of different quantities, each with a different distance from the lowest point of the corrugated pressure groove to the other side of the rotary pressure body, from the one side where the handle projection is located to the other side which is the position where it is pressed, and each of the rotary pressure bodies formed with different distances is set in stages, and in the step of controlling the additionally discharged liquid medicine, a stage is selected, and the liquid medicine is transferred by controlling the discharge amount of the additional liquid medicine while pressing at a pressing depth according to the selected stage. Method of operation of the device. Claim 9 In claim 1, the step of returning to the original position is a method of operating a liquid transfer device in which, after the liquid is additionally discharged, the pressure on the rotary pressurizing body is removed by rotation, and the liquid is supplied back to the storage balloon body for storage and discharged again through a bypass pipe.

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