Liquid medicine injection device

Abstract

In one embodiment, a liquid medicine injection device may comprise: a main frame; an adapter including a shaft rotatably connected to the main frame and a holder for fixing a plurality of syringes around the shaft; a translation assembly configured to press a syringe positioned at a pressing location among the plurality of syringes; and a rotation assembly configured to rotate the adapter to position any one of the plurality of syringes at the pressing location.

Description

Drug injection device

[0001] The following embodiment relates to a drug solution injection device.

[0002] In conventional pain intervention procedures, operators face the risk of continuous radiation exposure, and significant time and cost are required to train skilled practitioners to a level capable of stable procedures. Furthermore, large disparities in procedural quality across operators, regions, and hospitals make it difficult to universally provide high-quality medical services. To address these drawbacks, interventional assistance robots are being introduced. For example, when a user inputs a command, the interventional assistance robot can be configured to pressurize a syringe to inject the medication contained within it into the target area.

[0003] The aforementioned background technology is one that the inventor possessed or acquired in the process of deriving the content of the disclosure of the present application, and it cannot be considered as prior art disclosed to the general public prior to the filing of this application.

[0004] The objective of one embodiment is to provide a drug injection device for use in a remote pain intervention procedure.

[0005] The objective of one embodiment is to provide a drug solution injection device capable of sequentially and / or repeatedly pressurizing a plurality of syringes.

[0006] The objective of one embodiment is to provide a drug injection device capable of cleaning the path through which the drug is injected by discharging the cleaning solution to the outside.

[0007] In one embodiment, the drug injection device may include: a main frame; an adapter comprising a shaft rotatably connected to the main frame and a holder for fixing a plurality of syringes around the shaft; a translational movement assembly configured to pressurize a syringe positioned at a pressurized position among the plurality of syringes; and a rotation assembly configured to rotate the adapter to position any one of the plurality of syringes at the pressurized position.

[0008] In one embodiment, the shaft may include a main flow path formed inside the shaft; and a plurality of branch flow paths formed inside the shaft to communicate radially with the main flow path.

[0009] In one embodiment, the adapter may further include a plurality of connecting tubes for connecting each of the plurality of syringes and the plurality of branch channels fixed to the holder.

[0010] In one embodiment, the adapter may further include a three-way valve connected to the end of the shaft to communicate with the main flow path.

[0011] In one embodiment, the three-way valve includes a first port connected to the main flow path; a second port connected to an injection needle for injecting a drug solution into a target area; and a third port for discharging the drug solution to the outside, wherein the second port and the third port may be opened optionally.

[0012] In one embodiment, the drug solution injection device further comprises a processor configured to control the translational movement assembly, the rotation assembly, and the three-way valve, and the processor may be configured to pressurize a third syringe containing a cleaning solution among the plurality of syringes with the third port open to clean the branch path and the main path after pressurizing a first syringe containing a first drug solution among the plurality of syringes and before pressurizing a second syringe containing a second drug solution among the plurality of syringes.

[0013] In one embodiment, the diameter of the branch channel may be smaller than or equal to the diameter of the main channel.

[0014] In one embodiment, the drug solution injection device may further include a backflow prevention mechanism to prevent backflow of the drug solution.

[0015] In one embodiment, the translational movement assembly may include a translational movement actuator that generates movement in the longitudinal direction; and a push plate that is translated along the longitudinal direction of the syringe by the translational movement actuator.

[0016] In one embodiment, the translational moving actuator may include: a first motor that generates rotational power; a lead screw that receives rotational power from the first motor; and a nut that is coupled to the lead screw, is movable along the longitudinal direction of the lead screw, and is connected to the push plate.

[0017] In one embodiment, the drug solution injection device may further include a processor configured to determine the initial position in which the push plate contacts the plunger of the syringe based on the current value or voltage value of the first motor.

[0018] In one embodiment, the drug solution injection device may further include a separate actuator configured to generate movement in the longitudinal direction and to pressurize the plunger of the syringe in a direction opposite to that of the translational movement actuator with respect to the plunger of the syringe.

[0019] In one embodiment, the translational movement assembly may further include a force sensor configured to measure the force with which the push plate presses the plunger of the syringe.

[0020] In one embodiment, the drug solution injection device may further include a processor configured to determine the initial position where the push plate contacts the plunger of the syringe based on the measurement value of the force sensor.

[0021] In one embodiment, the rotation assembly may include a second motor that generates rotational power; and a rotation pulley that receives rotational power from the second motor and is rotatable together with the shaft.

[0022] In one embodiment, the liquid injection device may further include a shaft fixing clamp that is translationally movable with respect to the main frame so as to be able to contact one end of the shaft in order to fix the longitudinal position of the shaft.

[0023] In one embodiment, the holder may include a first holder connected to the shaft; and a second holder connected to the shaft and located above the first holder.

[0024] A drug injection device according to one embodiment can be used for remote pain intervention procedures.

[0025] By using a drug solution injection device according to one embodiment, a plurality of syringes can be pressurized sequentially and / or repeatedly.

[0026] By using a drug injection device according to one embodiment, the cleaning solution can be discharged to the outside to clean the path through which the drug is injected.

[0027] FIGS. 1 to 3 are perspective views of a drug solution injection device according to one embodiment.

[0028] FIG. 4 is a perspective view of a drug injection device according to one embodiment shown with the cover removed.

[0029] FIG. 5 is a side view of a drug injection device according to one embodiment shown with the cover removed.

[0030] FIG. 6 is a perspective view of an adapter according to one embodiment.

[0031] FIG. 7 is a perspective view of a shaft according to an embodiment in which a main Euro and a branch Euro are formed inside.

[0032] FIG. 8 is a perspective view of a drug injection device according to one embodiment, showing a state in which a syringe is connected to a shaft through a connecting tube.

[0033] FIG. 9 is a perspective view of a liquid injection device according to one embodiment, illustrating a state in which a shaft fixing clamp is connected to a clamp fastening body in a length-adjustable manner.

[0034] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, various modifications may be made to the embodiments, and thus the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, and substitutions to the embodiments are included within the scope of the rights.

[0035] The terms used in the embodiments are for illustrative purposes only and should not be interpreted as intended to be limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0036] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the embodiments pertain. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0037] In addition, when describing with reference to the attached drawings, identical components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. When describing embodiments, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the embodiment, such detailed description is omitted.

[0038] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments. These terms are intended merely to distinguish the components from other components, and the nature, order, or sequence of the components is not limited by these terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that while the component may be directly connected or connected to the other component, another component may also be "connected," "combined," or "connected" between each component.

[0039] Components included in any one embodiment and components having common functions shall be described using the same names in other embodiments. Unless otherwise stated, the description in any one embodiment may also apply to other embodiments, and specific descriptions shall be omitted to the extent of overlap.

[0040]

[0041] FIGS. 1 to 3 are perspective views of a drug injection device according to one embodiment. FIG. 4 is a perspective view of a drug injection device according to one embodiment with the cover removed. FIG. 5 is a side view of a drug injection device according to one embodiment with the cover removed.

[0042] In describing the drug injection device (1000) below, the upper side may be understood to mean the +Z direction side, and the lower side may mean the -Z direction side.

[0043] Referring to FIGS. 1 through 5, the drug injection device (1000) can be used for interventional procedures. For example, the drug injection device (1000) can be used for pain interventional procedures by being connected to a needle position control device (not shown) for controlling the position of the injection needle. For example, the drug injection device (1000) can be used for interventional procedures by being connected to a catheter control device (not shown) for controlling a catheter. The drug injection device (1000) can be used to inject a drug into a target site (e.g., the patient's body) during a pain interventional procedure. The drug injection device (1000) can inject a drug into the target site sequentially and / or repeatedly through a plurality of syringes (S). For example, the drug injection device (1000) can inject a drug into the patient's body through a needle (not shown) inserted into the patient's body while connected to the drug injection device (1000). The drug solution may include steroids, contrast agents, anesthetics, and / or saline solution, etc. However, this is exemplary and the types of drugs are not limited thereto. For example, each drug solution may be contained in a separate syringe (S). Meanwhile, although two syringes (S) are shown in the drawing, this is for convenience of explanation and the number of syringes (S) is not limited thereto.

[0044] A drug injection device (1000) according to one embodiment may include a main frame (100), a translation assembly (200), a rotation assembly (300), an adapter (400), and / or a cover (700). The main frame (100) may be a part for connecting the parts of the drug injection device (1000). The adapter (400) may be a part for fixing a plurality of syringes (S). The translation assembly (200) may pressurize a syringe (S) located at a pressurized position (P). The rotation assembly (300) may rotate the adapter (400) to which the plurality of syringes (S) are connected in order to position a syringe (S) containing the drug to be injected among the plurality of syringes (S) at the pressurized position (P). The cover (700) may be a part for protecting the parts of the drug injection device (1000). By the operation of the translational movement assembly (200) and / or the rotational assembly (300), the liquid medicine filled in each of the plurality of syringes (S) can be injected into the target site in sequence.

[0045]

[0046] The operation of the translational movement assembly (200) and the rotation assembly (300) will be explained with reference to FIGS. 3 to 5.

[0047] In one embodiment, the translational movement assembly (200) may be configured to pressurize a syringe (S) located at a pressurized position (P) among a plurality of syringes (S).

[0048] A translational movement assembly (200) according to one embodiment may include a translational movement actuator (210), a push plate (220), and / or a force sensor (not shown). The translational movement actuator (210) may generate movement in the longitudinal direction. For example, the translational movement actuator (210) may move the push plate (220) along the up-down direction (e.g., Z-axis direction). The push plate (220) may pressurize the syringe (S) (e.g., the plunger of the syringe (S)) located at a pressurized position (P) on the lower side (e.g., the -Z direction side) of the push plate (220) by being translated along the longitudinal direction (e.g., Z-axis direction) of the syringe (S) by the translational movement actuator (210).

[0049] A translational actuator (210) according to one embodiment may include a first motor (211), a translational pulley (212), a lead screw (213), a nut (214), a guide rail (215), and / or a guide rail connector (216). The first motor (211) may generate rotational power. The rotational power generated by the first motor (211) may be transmitted to the lead screw (213). For example, rotational power may be transmitted from the first motor (211) to the lead screw (213) by the translational pulley (212) and a timing belt. The lead screw (213) may be screwed into the nut (214). When the lead screw (213) is rotated, the nut (214) may move along the longitudinal direction (e.g., Z-axis direction) of the lead screw (213). A push plate (220) may be connected to the nut (214). In other words, when the first motor (211) transmits rotational power, the lead screw (213) rotates, and the push plate (220) and nut (214) can be moved along the longitudinal direction (e.g., Z-axis direction) of the lead screw (213). For example, the push plate (220) can be moved downward (e.g., -Z direction) or upward (e.g., +Z direction). The guide rail (215) and the guide rail connector (216) can guide the translational movement of the push plate (220). For example, the push plate (220) can be moved along the longitudinal direction of the guide rail (215) while connected to the guide rail connector (216). The longitudinal direction of the guide rail (215) and the longitudinal direction of the syringe (S) can be parallel to each other. For example, the longitudinal direction of the guide rail (215) and the longitudinal direction of the syringe (S) may be parallel to the vertical direction (e.g., Z-axis direction). However, this is exemplary and the structure of the translational movement assembly (200) is not limited thereto.

[0050] In one embodiment, a force sensor (not shown) may be configured to measure the force with which the push plate (220) presses the plunger of the syringe (S). For example, the force sensor may be placed inside the push plate (220). As described below, the force sensor may be used to determine the initial position (e.g., the position of the push plate (220) in FIG. 2) where the push plate (220) contacts the plunger of the syringe (S) located at the pressurized position (P).

[0051] In one embodiment, the rotation assembly (300) may be configured to rotate the adapter (400) to position any one of the plurality of syringes (S) at a pressurized position (P). The rotation assembly (300) may rotate the shaft (410) of the adapter (400), and the plurality of syringes (S) connected around the shaft (410) may be rotated around the longitudinal direction of the shaft (410). By driving the rotation assembly (300), any one of the plurality of syringes (S) desired by the user may be positioned at a pressurized position (P).

[0052] A rotation assembly (300) according to one embodiment may include a second motor (311) and / or a rotation pulley (312). The second motor (311) may generate rotational power. The rotational power generated by the second motor (311) may be transmitted to the shaft (410) of the adapter (400). For example, rotational power may be transmitted from the second motor (311) to the adapter (400) by the rotation pulley (312) and a timing belt. The shaft (410) and the rotation pulley (312) may rotate together. However, this is exemplary and the structure of the rotation assembly (300) is not limited thereto.

[0053]

[0054] FIG. 6 is a perspective view of an adapter according to one embodiment.

[0055] Referring to FIGS. 4 to 6, an adapter (400) according to one embodiment may include a shaft (410) and / or a holder (420).

[0056] In one embodiment, the shaft (410) may be rotatably connected to the main frame (100). The shaft (410) may be formed to have a longitudinal direction. The longitudinal direction of the shaft (410) may be parallel to the longitudinal direction of the syringe (S). For example, the longitudinal direction of the shaft (410) and the longitudinal direction of the syringe (S) may be parallel to the vertical direction (e.g., the Z-axis direction).

[0057] In one embodiment, the holder (420) may be a part for securing a plurality of syringes (S) around the shaft (410). The plurality of syringes (S) may have different shapes and / or sizes. For example, the holder (420) may be formed of an elastically deformable material to secure a plurality of syringes (S) having different shapes and / or sizes. However, as this is exemplary, the holder (420) may further include a separate structure for securing a plurality of syringes (S) having different shapes and / or sizes. The holder (420) may include a first holder (421) and a second holder (422) connected to the shaft (410). The second holder (422) may be located above the first holder (421) (e.g., on the +Z direction side). The number, shape, and / or arrangement of the holders (420) may not be limited to those shown in FIG. 6. For example, a syringe (S) can be secured by a single holder (420). Meanwhile, although the drawing shows that six syringes (S) can be connected to the holder (420), this is exemplary and the number of syringes (S) that can be connected to the holder (420) is not limited thereto. For example, the holder (420) can be formed so that two to seven syringes (S) can be connected to the holder (420).

[0058] In one embodiment, a plurality of syringes (S) may be connected to a holder (420) substantially parallel to each other. For example, the plurality of syringes (S) connected to the holder (420) may be parallel to the longitudinal direction (e.g., Z-axis direction) of the shaft (410). However, this is exemplary, and the plurality of syringes (S) may be connected to an adapter (400) such that they are inclined relative to each other. For example, the plurality of syringes (S) connected to the holder (420) may form a downward-facing cone shape. For example, the plurality of syringes (S) may be connected to the shaft (410) such that the longitudinal direction of each of the plurality of syringes (S) forms a constant angle with the longitudinal direction of the shaft (410). That is, the longitudinal direction of the plurality of syringes (S) may not be parallel to the longitudinal direction of the shaft (410). To this end, the diameter of the second holder (422) may be larger than the diameter of the first holder (421). According to this structure, the length of the connecting tube (e.g., 430 in FIG. 8) described later can be shortened, or the syringe (S) can be connected to the branch channel (e.g., 412 in FIG. 7) without the connecting tube (430).

[0059]

[0060] FIG. 7 is a perspective view of a shaft according to an embodiment in which a main flow path and a branch flow path are formed inside. FIG. 8 is a perspective view of a drug solution injection device according to an embodiment showing a syringe connected to the shaft through a connecting tube.

[0061] Referring to FIGS. 7 and FIGS. 8, a shaft (410) according to one embodiment may include a main flow path (411) and a branch flow path (412). The main flow path (411) and the branch flow path (412) may be passages for moving a liquid medicine.

[0062] In one embodiment, the main flow path (411) may be formed inside the shaft (410). For example, the main flow path (411) may be formed along the longitudinal direction of the shaft (410). One end of the main flow path (411) may be in communication with the outside. For example, the lower end of the main flow path (411) (e.g., the -Z direction end) may be in communication with the outside. As described below, the main flow path (411) may be configured to be in communication with a three-way valve (not shown).

[0063] In one embodiment, a branch channel (412) may be formed inside the shaft (410) to communicate with the main channel (411). For example, the branch channel (412) may be formed to communicate radially with the main channel (411). For example, the diameter of the branch channel (412) may be smaller than or equal to the diameter of the main channel (411). The branch channel (412) may be formed in multiple numbers. For example, the branch channel (412) may be formed in a number equal to the number of syringes (S) that can be fixed to the adapter (400) by the holder (420) (e.g., six). The adapter (400) may further include a connecting tube (430) for connecting the syringes (S) and the branch channel (412). The liquid medicine can sequentially pass from the syringe (S) through the connecting tube (430), the branch channel (412), and the main channel (411). The branch channel (412) to which the syringe (S) is not connected can be closed through a stopper (not shown), etc. The branch channel (412) can be formed so that its diameter varies along its length. For example, the diameter of the part of the branch channel (412) that connects to the main channel (411) may be smaller than the diameter of the part of the branch channel (412) that connects to the connecting tube (430).

[0064] In one embodiment, the drug injection device (1000) may further include a backflow prevention mechanism to prevent backflow of the drug. Backflow of the drug may mean that the drug contained in one syringe (S) moves toward another syringe (S). Since backflow of the drug can cause inappropriate results, such as inaccurate amounts of drug injected into a target site (e.g., a patient's body) or mixing of the drugs, it is necessary to prevent backflow of the drug. The backflow prevention mechanism may be a mechanism to prevent the plunger of a syringe containing another drug (e.g., S2) from being pushed out while a push plate (e.g., 220 in FIG. 2) pressurizes the plunger of a syringe containing the drug to be injected (e.g., S1).

[0065] In one embodiment, the anti-reverse mechanism may include a clutch structure (not shown) connected to a syringe (S). The clutch structure may be connected to the syringe (S) to prevent the plunger of another syringe (e.g., S2) from being pushed out while a push plate (e.g., 220 in FIG. 2) pressurizes the plunger of the syringe (e.g., S1). That is, the clutch structure may be a structure for preventing the plunger of the syringe (S) from being pushed out in an upward direction (e.g., +Z direction).

[0066] In one embodiment, the anti-backflow mechanism may include a valve (not shown) that selectively opens or closes a branch path (412). The valve may be configured to close another branch path (412) while a drug solution is injected through one of the open branch paths (412).

[0067] In one embodiment, the anti-backflow mechanism may include an anti-backflow clamp (not shown) that selectively opens or closes a connecting tube (430). The anti-backflow clamp may be configured to block the movement of the drug solution through another connecting tube (430) by closing it while the drug solution is being injected through one of the connecting tubes (430). However, the configuration and / or type of the anti-backflow mechanism is exemplary and is not limited thereto.

[0068] In one embodiment, the adapter (400) may further include a three-way valve (not shown) comprising a first port, a second port, and a third port. The three-way valve may be connected to an end of the shaft (410) (e.g., a -Z direction end) to communicate with the main flow path (411). The three-way valve may be positioned adjacent to an infusion needle (not shown) or a catheter (not shown) to be connected to the infusion needle or catheter. The first port may be a portion for connecting to the main flow path (411). For example, the first port may be connected to the main flow path (411), and a drug solution may be delivered from the main flow path (411) through the first port. The second port may be a portion for injecting the drug solution into a target site (e.g., a patient's body). For example, the second port may be connected to an infusion needle or catheter for injecting the drug solution. The second port may be directly connected to an infusion needle or catheter, or connected to an infusion needle or catheter through a tube. The third port may be a part for discharging the drug solution to the outside. The second port and the third port may be opened alternatively. For example, the second port may be opened and the third port may be closed to inject the drug solution into a target site. For example, the second port may be closed and the third port may be opened to discharge the drug solution to the outside. As described below, the operation of the three-way valve may be controlled by a processor (e.g., 500 in FIG. 4).

[0069]

[0070] FIG. 9 is a perspective view of a liquid injection device according to one embodiment, illustrating a state in which a shaft fixing clamp is connected to a clamp fastening body in a length-adjustable manner.

[0071] Referring to FIGS. 4 and FIGS. 9, a liquid injection device (1000) according to one embodiment may further include a shaft fixing clamp (600) and a clamp insertion port (610). By inserting the shaft fixing clamp (600) into the clamp insertion port (610), the shaft fixing clamp (600) can be connected to the main frame (100).

[0072] In one embodiment, the shaft fixing clamp (600) can fix the longitudinal position of the shaft (410). For example, the shaft fixing clamp (600) can fix the vertical position (e.g., Z-axis position) of the shaft (410). The shaft fixing clamp (600) can be connected to the main frame (100) so as to be movable in translation. For example, the degree to which the shaft fixing clamp (600) is inserted into the clamp insertion port (610) can be adjusted. For example, screw threads can be formed on the outer surface of the shaft fixing clamp (600) and on the inner surface of the clamp insertion port (610). The shaft fixing clamp (600) is screw-coupled with the clamp insertion port (610) so that the degree to which it is inserted into the clamp insertion port (610) can be adjusted. When the shaft fixing clamp (600) is inserted into the clamp insertion opening (610) in a downward direction (e.g., -Z direction) for a certain length, one end of the shaft fixing clamp (600) (e.g., -Z direction end) can come into contact with one end of the shaft (410) (e.g., +Z direction end). In other words, after the shaft (410) is connected to the main frame (100), the shaft fixing clamp (600) is translated downward (e.g., -Z direction) relative to the main frame (100), so that one end of the shaft fixing clamp (600) (e.g., -Z direction end) can come into contact with one end of the shaft (410) (e.g., -Z direction end). With the shaft fixing clamp (600) and the shaft (410) in contact with each other, the shaft (410) can rotate around the longitudinal direction while its longitudinal position is fixed. At this time, the contact surface between the shaft fixing clamp (600) and the shaft (410) may substantially be in the shape of a cone or a hemisphere.

[0073]

[0074] Referring again to FIGS. 1 to 4, a drug injection device (1000) according to one embodiment may further include a processor (500) configured to control the operation of the drug injection device (1000). For example, the processor (500) may include a central processing unit (CPU) and / or memory.

[0075] In one embodiment, the processor (500) may be configured to control the translational movement assembly (200). In the state of FIG. 1, the processor (500) may control the translational movement assembly (200) to move the push plate (220) toward the syringe (S). As described below, the processor (500) may move the push plate (220) until the push plate (220) reaches an initial position (e.g., the position of the push plate (220) in FIG. 2). The initial position may be the position of the push plate (220) when the push plate (220) contacts the plunger of the syringe (S) located at the pressurized position (P), as shown in FIG. 2. The initial position of the push plate (220) may vary depending on the shape, size, and / or amount of liquid contained inside the syringe of the syringe located at the pressurized position (P). In the state of FIG. 2, the processor (500) can move the push plate (220) so that the push plate (220) pressurizes the syringe (S). As the plunger of the syringe (S) moves due to the movement of the push plate (220), the liquid medicine inside the syringe (S) can be injected into the target area. The processor (500) may be configured to calculate the degree to which the push plate (220) is moved longitudinally based on the initial position of the push plate (220), the cross-sectional area of ​​the syringe (S), and / or the amount of liquid medicine to be injected.

[0076] In one embodiment, the processor (500) may be configured to determine the initial position where the push plate (220) contacts the plunger of the syringe (S) based on the current value and / or voltage value of the first motor (211). While the push plate (220) is moving without contacting the plunger of the syringe (S), it may be moved under a certain degree of load. When the push plate (220) contacts the plunger of the syringe (S), an additional load may be generated by the plunger of the syringe (S), and the current value and / or voltage value of the first motor (211) of the translational movement assembly (200) may change. Accordingly, the processor (500) may determine the initial position where the push plate (220) contacts the plunger of the syringe (S) from the current value and / or voltage value.

[0077] In one embodiment, the processor (500) may be configured to determine the initial position where the push plate (220) contacts the plunger of the syringe (S) based on the measurement of the force sensor. When the push plate (220) contacts the plunger of the syringe (S), a force may be generated in which the plate presses against the plunger of the syringe (S). Accordingly, the processor (500) can determine the initial position where the push plate (220) contacts the plunger of the syringe (S) from the measurement of the force sensor. At this time, the measurement of the force sensor may differ depending on the shape, size, and / or amount of liquid medicine contained in the syringe. By pre-measuring the measurement of the force sensor according to the shape, size, and / or amount of liquid medicine contained in the syringe, information regarding the shape, size, and / or amount of liquid medicine contained in the syringe can be obtained.

[0078] In one embodiment, the processor (500) may be configured to control the rotation assembly (300). With a plurality of syringes (S) connected to the shaft (410), the shaft (410) may be rotated so that different syringes (S) are positioned sequentially and / or repeatedly at the pressurized position (P). As illustrated in FIGS. 2 and 3, when the first syringe (S1) is positioned at the pressurized position (P), the translational movement assembly (200) may inject the liquid medicine contained in the first syringe (S1) into a target site by pressurizing the first syringe (S1). After the first syringe (S1) is pressurized, the processor (500) may rotate the shaft (410) so that the second syringe (S2) is positioned at the pressurized position (P). With the second syringe (S2) positioned at the pressurized position (P), the translational movement assembly (200) can inject the drug solution contained in the second syringe (S2) into the target site by pressurizing the second syringe (S2). After the second syringe (S2) is pressurized, the processor (500) can rotate the shaft (410) so that the third syringe (not shown) is positioned at the pressurized position (P). With the third syringe positioned at the pressurized position (P), the translational movement assembly (200) can inject the drug solution contained in the third syringe into the target site by pressurizing the third syringe.

[0079] In one embodiment, the processor (500) may be configured to control a three-way valve (not shown). The processor (500) may selectively open the second port and the third port of the three-way valve. For example, the opening and / or closing of the three-way valve by the processor (500) may be performed using an actuator (not shown) to precisely control the amount of liquid injected. The opening and / or closing of the three-way valve by the processor (500) may be performed remotely or automatically. While the liquid is being injected sequentially, the liquid remaining inside the main flow path (411) and / or the three-way valve (e.g., the wall) may mix with other liquids. To prevent this, the processor (500) may perform an action of cleaning the main flow path (411) and / or the three-way valve using a cleaning solution (e.g., saline solution). The processor (500) can inject the first drug solution contained in the first syringe (S1) into a target site (e.g., a patient's body) by pressurizing the first syringe (S1) with the second port open. After pressurizing the first syringe (S1), some of the first drug solution may remain inside the main flow path (411) and / or the three-way valve. Before pressurizing the second syringe (S2) containing the second drug solution, the processor (500) can pressurize a third syringe (not shown) containing a cleaning solution (e.g., saline solution) to clean the main flow path (411) and / or the three-way valve. The processor (500) can position the third syringe at the pressurization position (P), close the second port, and open the third port by rotating the shaft (410). The processor (500) can clean the main flow path (411) and / or the three-way valve by pressurizing a third syringe containing a cleaning solution while the third port is open. At this time, the cleaning solution can be discharged to the outside through the third port. After pressurizing the third syringe, the processor (500) can position the second syringe (S2) at the pressurized position (P) by rotating the shaft (410), open the second port, and close the third port.The processor (500) can inject the second drug solution into the target area by pressurizing the second syringe (S2) while the second port is open.

[0080] In one embodiment, the processor (500) may be configured to pressurize the syringe (S) based on the pressure of the injected drug solution. While the drug solution is being injected into the patient's body, the patient may complain of fatigue or pain due to the pressure of the injected drug solution. Accordingly, there is a need for the drug solution infusion device (1000) to adjust the speed at which the drug solution is injected. The processor (500) may be configured to adjust the speed at which the drug solution is injected based on the pressure of the injected drug solution. For example, the processor (500) may be configured to adjust the speed at which the push plate (220) pressurizes the plunger of the syringe (S) based on the force of the push plate (220) pressing the plunger of the syringe (S) measured by a force sensor (not shown). For example, the processor (500) may be configured to control the speed at which the push plate (220) pressurizes the plunger of the syringe (S) based on the pressure of the liquid medicine measured by a pressure sensor (not shown) located adjacent to the three-way valve.

[0081] In one embodiment, the drug solution injection device (1000) may further include a separate actuator (not shown) capable of driving the plunger of the syringe (S) in a pulling direction. The separate actuator may be configured to generate movement in the longitudinal direction and to press the plunger of the syringe in a direction opposite to that of the translational actuator (210) relative to the plunger of the syringe. For example, the separate actuator may be configured to press the plunger of the syringe (S) from the lower side (e.g., -Z direction side) to the upper side (e.g., +Z direction side). By having the translational actuator (210) and the separate actuator each simultaneously press the plunger of the syringe (S) in opposite directions, precise control of the plunger of the syringe (S) may be possible. For example, the translational actuator (210) and a separate actuator may be configured to pressurize the plunger of the syringe (S) based on the values ​​of the force sensor and / or pressure sensor. For example, the translational actuator (210) and a separate actuator may be configured to move the plunger of the syringe (S) in a pulling direction (e.g., upward direction) based on the patient's condition. However, this is exemplary, and it may also be possible to have no separate actuator and for the translational actuator (210) to be configured to move the plunger of the syringe (S) in both a pushing direction and a pulling direction.

[0082] In one embodiment, the processor (500) may be configured to pressurize the syringe (S) by taking into account the internal volume of the main flow path (411) and / or the three-way valve. For example, to inject a desired amount of liquid medicine into a target site (e.g., a patient's body), the liquid medicine infusion device (1000) may pressurize the syringe (S) to inject the liquid medicine by adding the internal volume of the main flow path (411) and / or the three-way valve to the desired amount.

[0083]

[0084] Although the embodiments described above have been explained with reference to limited drawings, those skilled in the art can apply various technical modifications and variations based on the above. For example, appropriate results can be achieved even if the described techniques are performed in a different order than described, and / or the components of the described system, structure, device, circuit, etc. are combined or assembled in a form different from described, or replaced or substituted by other components or equivalents.

[0085] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below.

Claims

1. In a drug solution injection device, Main frame; An adapter comprising a shaft rotatably connected to the main frame and a holder for securing a plurality of syringes around the shaft; A translational movement assembly configured to pressurize a syringe located at a pressurized position among the plurality of syringes; and A drug injection device comprising a rotating assembly configured to rotate the adapter to position any one of the plurality of syringes at the pressurized position.

2. In Paragraph 1, The above shaft is, A main fluid path formed inside the shaft; and A drug injection device comprising a plurality of branch channels formed inside the shaft to communicate radially with the main channel.

3. In Paragraph 2, The above adapter is a drug injection device further comprising a plurality of connecting tubes for connecting each of the plurality of syringes and the plurality of branch channels fixed to the holder.

4. In Paragraph 2, The above adapter is a drug injection device further comprising a three-way valve connected to the end of the shaft to communicate with the main Euro.

5. In Paragraph 4, The above three-way valve is, A first port connected to the main Euro above; A second port connected to an injection needle for injecting a drug solution into a target site; and It includes a third port for discharging the liquid medicine to the outside, and A drug injection device in which the second port and the third port are opened alternatively.

6. In Paragraph 5, It further includes a processor configured to control the translational movement assembly, the rotational assembly, and the three-way valve, and A drug injection device configured such that, after pressurizing a first syringe containing a first drug solution among the plurality of syringes, and before pressurizing a second syringe containing a second drug solution among the plurality of syringes, the processor pressurizes a third syringe containing a cleaning solution among the plurality of syringes while the third port is open to clean the branch path and the main path.

7. In Paragraph 2, A drug injection device in which the diameter of the branch channel is smaller than or equal to the diameter of the main channel.

8. In Paragraph 2, A drug injection device further comprising a backflow prevention mechanism to prevent backflow of the drug solution.

9. In Paragraph 1, The above translational movement assembly is, A translational motion actuator that generates movement in the longitudinal direction; and A drug injection device comprising a push plate that is translated along the longitudinal direction of the syringe by the above translational moving actuator.

10. In Paragraph 9, The above translational motion actuator is, A first motor that generates rotational power; A lead screw receiving rotational power from the first motor; and A drug injection device comprising a nut that is coupled to the lead screw, is movable along the longitudinal direction of the lead screw, and is connected to the push plate.

11. In Paragraph 10, A drug injection device further comprising a processor configured to determine the initial position in which the push plate contacts the plunger of the syringe based on the current value or voltage value of the first motor.

12. In Paragraph 9, The above translational movement assembly further comprises a force sensor configured to measure the force with which the push plate presses the plunger of the syringe, in a drug solution injection device.

13. In Paragraph 12, A drug injection device further comprising a processor configured to determine the initial position in which the push plate contacts the plunger of the syringe based on the measurement value of the force sensor.

14. In Paragraph 9, A drug injection device comprising a separate actuator configured to generate movement in the longitudinal direction and to pressurize the plunger of the syringe in a direction opposite to the translational movement actuator with respect to the plunger of the syringe.

15. In Paragraph 1, The above-mentioned rotating assembly is, A second motor that generates rotational power; and A drug injection device comprising a rotary pulley that receives rotational power from the second motor and is rotatable together with the shaft.

16. In Paragraph 1, A drug injection device further comprising a shaft fixing clamp that is translationally movable with respect to the main frame so as to be able to contact one end of the shaft in order to fix the longitudinal position of the shaft.

17. In Paragraph 1, The above holder is, A first holder connected to the shaft; and A drug injection device comprising a second holder connected to the shaft and positioned above the first holder.

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