Apparatus for manufacturing infusion container

The device addresses partition wall swelling and bursting issues by using a diaphragm with a reinforcing plate to regulate pressure and separate air bubbles, ensuring accurate and efficient filling of intravenous fluid containers.

KR102990835B1Active Publication Date: 2026-07-15JW HLDG CO LTD +1

Patent Information

Authority / Receiving Office
KR · KR
Patent Type
Patents
Current Assignee / Owner
JW HLDG CO LTD
Filing Date
2023-10-04
Publication Date
2026-07-15

AI Technical Summary

Technical Problem

Existing fluid container manufacturing devices face issues with the partition wall swelling and bursting due to liquid supply pressure, leading to potential measurement errors and inefficiencies in liquid filling processes.

Method used

The device incorporates a diaphragm with a reinforcing plate to maintain constant liquid supply pressure, using a tank unit with a diaphragm and reinforcing plate to prevent swelling and ensure accurate filling by regulating internal pressure and preventing air bubbles from mixing with the liquid.

Benefits of technology

The solution effectively prevents diaphragm swelling and bursting, maintains consistent liquid flow rates, and avoids measurement errors by separating air bubbles, ensuring precise and efficient filling of intravenous fluid containers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a manufacturing apparatus for a fluid container comprising a filling unit for filling a fluid container with a drug solution, wherein the filling unit comprises a primary filling unit for primary filling a fluid container with a drug solution, a secondary filling unit disposed in the next process of the primary filling unit for secondary filling a fluid container that has been primary filled, and a tank unit of a drug solution supply unit connected to the primary filling unit and the secondary filling unit, respectively, to maintain the supply pressure of the drug solution, wherein the tank unit comprises an upper portion forming an upper space, a lower portion connected to the upper portion to form a lower space, and a diaphragm disposed between the upper portion and the lower portion to partition the upper space and the lower space, wherein the diaphragm comprises a plurality of first holes and a reinforcing plate disposed on the diaphragm and stacked thereon, and wherein the reinforcing plate is disposed so as not to overlap with the first holes.
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Description

Technology Field

[0001] The present invention relates to a device for manufacturing an intravenous fluid container. Background Technology

[0002] The fluid container includes a body and a port positioned in the body. The body may be made of a flexible material. Fluid is filled inside the body. The fluid is injected into the body or drained out through the port.

[0003] The fluid container manufacturing device can be broadly classified into a device that manufactures a body by overlapping and sealing sheets, and a device that mounts a port on the manufactured body and seals it.

[0004] Korean Registered Patent No. 10-2022070 (published September 18, 2019, hereinafter referred to as "the document") discloses an apparatus for manufacturing an intravenous fluid container.

[0005] In the case of this document, a configuration is disclosed in which two sheets, each wound on a winding roll, are overlapped and the outer edges of the sheets are sealed to form a body.

[0006] The fluid container manufacturing device can perform the process of making a fluid container for holding a drug solution and the process of filling the manufactured fluid container with the drug solution.

[0007] The liquid medication is filled through the ports. The intravenous fluid container may have one port or two ports. In the case of two ports, the nozzle of the filling unit is connected to each port, and the liquid medication is filled into the intravenous fluid container through the two ports.

[0008] The liquid supply unit (1500) is connected to the filling unit (1400, 1600) to supply the liquid. The liquid supply unit (1500) may include a tank unit that prevents hunting caused by the inflow of air bubbles or compensates for the supply pressure of the liquid lost when filling the liquid. A partition wall is arranged in this tank unit to divide the upper space and the lower space.

[0009] However, due to the supply pressure of the liquid, a problem may occur where the partition wall swells upward and bursts. Prior art literature

[0010] Republic of Korea Registered Patent No. 10-2022070 (Published September 18, 2019) The problem to be solved

[0011] The present invention aims to solve the problem of providing a fluid container manufacturing device capable of preventing a partition wall from swelling upward and bursting due to the supply pressure of the liquid medicine.

[0012] The problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0013] An embodiment is a device for manufacturing a fluid container, comprising a filling unit for filling a fluid container with a liquid medicine, wherein the filling unit comprises a primary filling unit for primary filling a fluid container with a liquid medicine, a secondary filling unit disposed in the next process of the primary filling unit for secondary filling a fluid container that has been primary filled, and a tank unit of a liquid medicine supply unit connected to the primary filling unit and the secondary filling unit, respectively, to maintain the supply pressure of the liquid medicine, wherein the tank unit comprises an upper portion forming an upper space, a lower portion connected to the upper portion to form a lower space, and a diaphragm disposed between the upper portion and the lower portion to partition the upper space and the lower space, wherein the diaphragm comprises a plurality of first holes and a reinforcing plate disposed on the diaphragm and stacked thereon, and the reinforcing plate may be disposed so as not to overlap with the first holes.

[0014] The upper part includes a hemispherical upper cover and an annular upper flange coupled to the upper cover, and the lower part includes a hemispherical lower cover and an annular lower flange coupled to the lower cover, and the upper flange and the lower flange can be fastened through a fastening member.

[0015] The upper flange may include a first surface that contacts the outer hemispherical surface of the upper cover and a second surface that contacts the lower surface of the upper cover. The lower flange may include a third surface that contacts the outer hemispherical surface of the lower cover and a fourth surface that contacts the lower surface of the lower cover.

[0016] The above diaphragm may be positioned to overlap with the upper flange and the lower flange. A fastening member may penetrate the first hole. The thickness of the reinforcing plate may be smaller than the thickness of the diaphragm. It may further include a sensor unit disposed on the upper cover to measure the internal pressure of the upper and lower parts. It may include a valve that regulates the internal pressure of the upper and lower parts based on the pressure measured by the sensor unit. Effects of the invention

[0017] According to an embodiment, by using a reinforcing plate laminated to a silicone diaphragm, the diaphragm is prevented from swelling above a certain position, and there is an advantage in preventing the diaphragm from swelling upward and bursting if the supply pressure of the liquid medicine is momentarily higher than the upper air pressure of the tank section.

[0018] According to the embodiment, when filling a liquid medicine container with liquid medicine from eight nozzles of a first filling unit and a second filling unit, the liquid medicine supply pressure inside the pipe connecting the liquid medicine supply unit to the filling unit is momentarily lowered due to the amount of liquid medicine discharged into the liquid medicine container, which lowers the flow rate of the liquid medicine passing through the volumetric flow meter that measures the flow rate of the pipe, thereby causing a deviation in the measurement of the filling amount. However, the diaphragm has the advantage of eliminating the measurement error of the liquid medicine by maintaining a constant flow rate so that the liquid medicine supply pressure does not drop while pressing the liquid medicine downwards while the liquid medicine is being filled into the liquid medicine container.

[0019] According to the embodiment, a problem arises where the volumetric flowr measuring the liquid medicine causes a decrease in the measured amount of liquid medicine due to mismeasuring when air bubbles are introduced. However, the diaphragm acts to allow air to accumulate at the circular upper part of the tank section, and there is a certain distance between the piping supplying the lower filling unit of the tank section and the diaphragm of the tank section, so that the air bubbles accumulate at the upper part of the diaphragm and do not enter the liquid medicine piping, thereby preventing the volumetric flowr from mismeasuring, which is an advantage. Brief explanation of the drawing

[0020] FIG. 1 is a drawing illustrating an intravenous fluid container manufacturing device according to an embodiment. FIG. 2 is a drawing illustrating a charging part, FIG. 3 is a drawing showing the tank section of the liquid supply unit. FIG. 4 is an exploded view of the tank section illustrated in FIG. 3, FIG. 5 is a side cross-sectional view of the tank section, FIG. 6 is a drawing illustrating a diaphragm, FIG. 7 is a drawing showing a reinforcing plate, FIG. 8 is a drawing showing the upper flange, Figure 9 is a drawing illustrating the lower flange. Specific details for implementing the invention

[0021] The object, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments associated with the accompanying drawings. Furthermore, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, in accordance with the principle that the inventor can appropriately define the concept of a term to best describe his invention. In describing the present invention, detailed descriptions of related prior art that could unnecessarily obscure the essence of the invention are omitted.

[0022] Hereinafter, an intravenous fluid container manufacturing device according to an embodiment will be described in detail with reference to the attached drawings. In the drawings below, the x-axis corresponds to the left-right direction of the intravenous fluid container manufacturing device as the transport direction of the intravenous fluid container. The y-axis corresponds to the front-back direction of the intravenous fluid container manufacturing device. The z-axis corresponds to the up-down direction of the intravenous fluid container manufacturing device.

[0023] FIG. 1 is a drawing illustrating a fluid container manufacturing device according to an embodiment.

[0024] The entire process of a fluid container manufacturing device is described with reference to FIG. 1. The fluid container manufacturing device may include a fluid container manufacturing unit (10) and a filling unit (20).

[0025] The fluid container manufacturing unit (10) may include an unwinding unit (100), a printing unit (200), a bag outer sealing unit (300), a hard port body first and second preheating unit (PR), a hard port body sealing unit (400), a first scrap removal unit (500) and a second scrap removal and bag separation unit (600), an inspection unit (700), and a bag transfer unit (800).

[0026] Sheets are supplied through the unwinding unit (100). The unwinding unit (100) supplies sheets (F1, F2) which are the material of an intravenous fluid container (not shown). The first sheet (F1) is supplied while the first sheet (F1) and the second sheet (F2) are each wound on a reel, and when the first sheet (F1) is exhausted, the end of the first sheet (F1) is cut, and the second sheet (F2) is attached to the cut end of the first sheet (F1) so that the second sheet (F2) continues to be supplied. The exhausted first sheet (F1) is replaced with a new sheet. This is to ensure that the operation of the entire device does not stop and maintains continuity when the sheet is replaced after exhaustion.

[0027] The first sheet (F1) and the second sheet (F2) are each made of two layers, and during the process of feeding the first sheet (F1) or the second sheet (F2) into the outer sealing part (300) of the bag, a knife (not shown) is inserted between the two layers of sheets to spread the two layers apart so that a hard port body (not shown), which will be described later, can be inserted, and the sheets are supplied to the outer sealing part (300).

[0028] In the following, the process applied to the first sheet (F1) is applied in the same way to the second sheet (F2) which is connected to the end of the first sheet (F1) and continuously fed.

[0029] The printing unit (200) prints characters or designs, etc. on the surface of the first sheet (F1) or the second sheet (F2). Then, by supplying printing ribbons of different colors to the printing unit (200), characters or designs can be printed in two colors.

[0030] The outer sealing portion (300) of the bag heat-seals the edges of a first sheet (F1) or a second sheet (F2) that are double-layered and correspond to the edge of the fluid container (not shown) to form the body of the fluid container (not shown) in which the fluid is contained. The outer sealing portion (300) of the bag may be equipped with a mold (not shown) that presses the first sheet (F1) or the second sheet (F2) and a knife (not shown) that cuts the first sheet (F1) or the second sheet (F2). Before the first sheet (F1) or the second sheet (F2) enters the outer sealing portion (300) of the bag, the area where the hard port body (not shown) is inserted in the first sheet (F1) or the second sheet (F2) is opened, and after inserting the hard port body (not shown), the outer sealing portion (300) of the bag is temporarily fixed by tacking, and then the edges of the first sheet (F1) or the second sheet (F2) are heat-fused to create a fluid container (not shown).

[0031] The first sheet (F1) or the second sheet (F2) can be cut at the outer sealing portion (300) of the bag so that multiple fluid containers (not shown) are transported as a unit. For example, the cutting can be performed so that four fluid containers (not shown) are transported as a set.

[0032] The hard port body 1st and 2nd preheating sections (PR) perform 1st and 2nd preheating. The hard port body 1st and 2nd preheating sections (PR) heat the surface of the hard port body to a temperature of approximately 130°C by pressing it down on the area where the hard port body and the 1st sheet (F1) or 2nd sheet (F2) are sealed, using a gripper cylinder (not shown) equipped with a heated electric heater mold that moves up and down, thereby making the hard surface of the hard port body (not shown) soft.

[0033] The mold shape of the first and second preheating sections (PR) of the hard pot body is designed to be identical to the shape of the hard pot body (not shown) so that the temperature is transferred uniformly to the surface of the hard pot body (not shown). The mold of the first and second preheating sections (PR) of the hard pot body is designed to allow adjustment of the vertical spacing and the horizontal position.

[0034] When the first heating of the hard port body is completed, the gripper cylinders of the first and second preheating sections (PR) of the hard port body open up and return to their original positions. Then, the main belt head (not shown) moves the hard port bodies in sets of four by one pitch to the next process, the second preheating process. The number of hard port bodies transferred in a set may vary depending on the design, and one pitch is the distance a set of hard port bodies travels.

[0035] Next, a second preheating is performed. For example, the area where the first preheating was performed is heated to a temperature of approximately 150°C for a certain period of time to soften the surface of the hard pot body. This is divided into first preheating and second heating, with the temperature varying from low to high. This is to ensure sufficient time to heat the hard pot body while raising the temperature so that the hard pot body is not damaged by the high temperature.

[0036] The first preheating and the second preheating are positioned close to the bag contour sealing process so that after the second preheating, the main belt (not shown) rotates to move the hard port body directly into the mold of the outer bag sealing part (300), thereby preventing the heated hard port body from cooling down.

[0037] The hard port body sealing portion (400) heat-fuses the area around the hard port body (not shown) to fix the hard port body (not shown) to the fluid container (not shown). A mold corresponding to the shape of the hard port body (not shown) may be placed in the hard port body sealing portion (400). Multiple such molds may be placed. Multiple molds with different pressure areas of the hard port body (not shown) may be placed, and multiple fusion processes may be performed.

[0038] The first scrap removal unit (500) and the second scrap removal and bag separation unit (600) serve to simultaneously remove scraps placed at the top and bottom of the fluid container (not shown) and to cut a set of fluid containers (not shown) into a single fluid container.

[0039] In the first scrap removal unit (500), when the sheet is transported, the clamp cylinder lowers to fix the sheet, the scrap cut into a round shape of the hanger part between the bags, the gripper grabs the scrap and pulls it down to remove the scrap and discard it into a collection container, and then the clamp rises. The hanger part refers to the part opposite to where the hard port of the fluid container is formed.

[0040] When the process is completed in the first scrap removal unit (500), the main belt (not shown) rotates to move four bags in one pitch and guides them to the second scrap removal and bag separation unit (600). In the second scrap removal and bag separation unit (600), when the sheet is transported, the fixing clamp lowers and the gripper cylinder that fixes the sheet grabs the scrap cut into a round shape on the side of the sheet, lifts it up, and removes it, and when the gripper moves toward the hanger, the separation knife located behind the gripper separates the bags. The second scrap removal and bag separation unit (600) removes the scrap from the part where the hard port body of the fluid container is formed and performs the operation of separating the bags of the fluid container.

[0041] The inspection unit (700) determines whether vacuuming is possible in the fluid container (not shown).

[0042] When the scrap-removed sheet is transported, the inspection unit (700) lowers the clamp to secure it, then inserts the nozzle into the injection port of the hard port body to seal it. Then, a vacuum is applied to the nozzle, and when the vacuum level is measured to a set value, the nozzle retracts to separate it. If the hard port body is sealed outside the sheet and a vacuum is not formed, the defective bag is dropped into the defective discharge container. The bag transfer (800) secures the hard port body to the filling process head.

[0043] The charging unit (20) may include a cap insertion unit (900, 1300), a primary charging unit (1400), a secondary charging unit (1600), a liquid supply unit (1500), and a good product discharge unit (1700).

[0044] The cap insertion part (900, 1300) inserts a cap into a hard port body (not shown) of a fluid container (not shown). A cap is inserted into each of the two hard port bodies (1a, 1b) formed in a single fluid container (not shown). First, either of the two caps can be inserted into a hard port body (not shown) of the fluid container (not shown).

[0045] The primary charging unit (1400) can fill a liquid medicine into a liquid medicine container (not shown) with a cap pressed in. The secondary charging unit (1600) can additionally fill a liquid medicine into the liquid medicine container (not shown) filled by the primary charging unit (1400).

[0046] After the filling of the liquid medicine is completed in the secondary filling unit (1600), the cap insertion unit (1300) can insert the remaining cap of the two caps into the other hard port body (1b) of the liquid medicine container (not shown). The liquid medicine supply unit (1500) is connected to the primary filling unit (1400) and the secondary filling unit (1600) to supply liquid medicine to the primary filling unit (1400) and the secondary filling unit (1600), respectively.

[0047] The good product, with the filling of the liquid medicine completed, is discharged through the good product discharge section (1700).

[0049] Figure 2 is a drawing showing the charging part (20).

[0050] Referring to FIG. 2, the filling unit (20) may include a cap insertion unit (900, 1300), a primary filling unit (1400), a secondary filling unit (1600), and a liquid supply unit (1500). The primary filling unit (1400) and the secondary filling unit (1600) are arranged continuously along the transport direction (x). The primary cap insertion unit (900) is arranged before the primary filling unit (1400) along the transport direction (x), and the secondary cap insertion unit (1300) is arranged after the secondary filling unit (1600) along the transport direction (x).

[0051] A volumetric flowr (MF) for measuring the amount of liquid may be placed between the primary charging unit (1400) and the liquid supply unit (1500), and between the secondary charging unit (1600) and the liquid supply unit (1500).

[0052] The liquid medicine supply unit (1500) is connected to the primary charging unit (1400) and the secondary charging unit (1600) respectively through piping. The primary charging unit (1400) first fills the liquid medicine into the fluid container. After the first filling, the secondary charging unit (1600) secondarily fills the liquid medicine into the fluid container. The liquid medicine supply unit (1500) supplies the liquid medicine to the primary charging unit (1400) and the secondary charging unit (1600) respectively.

[0054] FIG. 3 is a drawing showing the tank section (1510) of the liquid supply unit (1500), FIG. 4 is an exploded view of the tank section (1510) shown in FIG. 3, and FIG. 5 is a side cross-sectional view of the tank section (1510).

[0055] Referring to FIGS. 3 and 4, the tank section (1510) serves to prevent hunting caused by the inflow of bubbles or to compensate for the supply pressure of the liquid that is lost when filling the liquid.

[0056] The tank section (1510) includes an upper section (1511), a lower section (1512), and a diaphragm (1513). The upper section (1511) includes a hemispherical upper cover (1511a) and an annular upper flange (1511b) that is coupled to the upper cover (1511a). The lower section (1512) includes a hemispherical lower cover (1512a) and an annular lower flange (1512b) that is coupled to the lower cover (1512a).

[0057] The upper flange (1511b) and the lower flange (1512b) are connected via a fastening member. The diaphragm (1513) is positioned to overlap the upper flange (1511b) and the lower flange (1512b). The upper cover (1511a), the upper flange (1511b), and the diaphragm (1513) form the upper space of the tank section (1510).

[0058] The lower cover (1512a), the lower flange (1512b), and the diaphragm (1513) form the lower space of the tank section (1510). The lower space of the tank section (1510) is connected to an inlet (IL) and an outlet (OL). The liquid medicine flowing into the inlet (IL) has its pressure compensated in the tank section (1510) and flows out through the outlet (OL).

[0059] Meanwhile, the tank section (1510) may further include a sensor section (1515). The sensor section (1515) is positioned on the upper cover (1511a) to measure the internal pressure of the upper section (1511) and the lower section (1512). The tank section (1510) may include a valve (1516) that supplies air to the upper section (1511) and the lower section (1512) to increase the internal pressure based on the pressure measured by the sensor section (1515), and a valve (1517) that extracts the internal air to lower the internal pressure. Additionally, a pressure regulator (1518) may be positioned to automatically adjust the internal pressure based on a set pressure by checking the internal pressure measured through the sensor section (1515). The pressure regulator (1518) is connected to the air supply valve (1516) and the air discharge valve (1517).

[0060] Also, the location (GP) where bubbles are collected inside the tank section (1510) can be located higher than the location where the liquid is supplied (liquid supply line (LP)).

[0061] The pressure inside the tank section (1510) can be controlled by the air regulator (1518) and the sensor section (1515) to control the flow rate or pressure of the liquid medicine that exits through the outlet (OL) into the pipe. Since bubbles that may occur when the liquid medicine is injected into the tank section (1510) through the inlet (IL) are collected in the upper part (GP) above the liquid medicine supply line (LP), it is possible to prevent bubbles from mixing with the liquid medicine exiting through the outlet (OL).

[0062] In addition, by positioning the bubble collection point (GP) away from the pipe through which the liquid flows, the possibility of bubbles mixing with the liquid can be prevented.

[0064] FIG. 6 is a drawing showing a diaphragm (1513).

[0065] Referring to FIG. 6, the diaphragm (1513) may have a cylindrical plate shape. The diaphragm (1513) may be made of a silicone material that expands by a certain amount. The diaphragm (1513) may include a plurality of first holes (H1). The first holes (H1) are formed by penetrating the upper and lower surfaces of the diaphragm (1513). The plurality of first holes (H1) are arranged along the circumferential direction of the diaphragm (1513). The first holes (H1) may be arranged near the edge of the diaphragm (1513). A fastening member may penetrate the first holes (H1).

[0067] Figure 7 is a drawing showing a reinforcing plate (1514).

[0068] Referring to FIG. 7, the reinforcing plate (1514) may have a cylindrical plate shape. The reinforcing plate (1514) may include a plurality of second holes (H2). The second holes (H2) are formed by penetrating the upper and lower surfaces of the reinforcing plate (1514). The plurality of second holes (H2) are arranged along the circumferential direction of the reinforcing plate (1514).

[0069] The thickness of the reinforcing plate (1514) may be smaller than the thickness of the diaphragm (1513). Additionally, the reinforcing plate (1514) does not overlap with the first hole (H1) of the diaphragm (1513).

[0071] FIG. 8 is a drawing showing the upper flange (1511b).

[0072] Referring to FIG. 8, the upper flange (1511b) includes a plurality of third holes (H3). The third holes (H3) are formed by penetrating the upper and lower surfaces of the upper flange (1511b). A fastening member can penetrate the third holes (H3).

[0073] The upper flange (1511b) may include a first surface (S1) and a second surface (S2).

[0074] The first surface (S1) contacts the outer hemispherical surface of the upper cover (1511a). The second surface (S2) may contact the lower surface of the upper cover (1511a).

[0076] FIG. 9 is a drawing showing the lower flange (1512b).

[0077] Referring to FIGS. 5 and 9, the lower flange (1512b) includes a plurality of fourth holes (H4). The fourth holes (H4) are formed by penetrating the upper and lower surfaces of the lower flange (1512b). A fastening member can penetrate the fourth holes (H4).

[0078] The lower flange (1512b) may include a third surface (S3) and a fourth surface (S4).

[0079] The third surface (S3) contacts the outer hemispherical surface of the lower cover (1512a). The fourth surface (S4) may contact the bottom surface of the lower cover (1512a).

[0080] Since the reinforcing plate (1514) is stacked directly on top of the diaphragm (1513), the strength of the diaphragm (1513) can be increased. The reinforcing plate (1514) prevents the diaphragm (1513) from deforming as the internal pressure of the tank section (1510) rises.

[0081] For the above, a device for manufacturing an intravenous fluid container according to a preferred embodiment of the present invention has been examined in detail with reference to the attached drawings.

[0082] The aforementioned embodiment of the present invention should be understood as illustrative in all respects and not limiting, and the scope of the invention will be defined by the claims set forth below rather than by the detailed description above. Furthermore, the meaning and scope of these claims, as well as all modifications or variations derived from equivalents thereof, should be interpreted as being included within the scope of the invention. Explanation of the symbols

[0083] 100: Unwinding section 200: Printing section 300: Bag outer sealing section 400: Hard port body sealing section 500: Primary scrap removal section 600: Secondary Scrap Removal and Bag Separation Unit 700: Inspection Unit 800: Back transfer 900, 1300: Cap insertion part 1400: Primary charging unit 1600: Secondary charging unit 1500: Chemical supply unit 1510: Tank unit 1700: Good product discharge unit

Claims

Claim 1 An apparatus for manufacturing an intravenous fluid container, comprising a filling unit for filling an intravenous fluid container with a medicinal liquid, wherein the filling unit includes: a primary filling unit for primary filling the intravenous fluid container with a medicinal liquid; a secondary filling unit disposed in the next process of the primary filling unit for secondary filling the intravenous fluid container that has been primary filled; and a tank portion of a medicinal liquid supply unit that is respectively connected to the primary filling unit and the secondary filling unit to maintain the supply pressure of the medicinal liquid, wherein the tank portion includes an upper portion forming an upper space, a lower portion connected to the upper portion to form a lower space, and a diaphragm disposed between the upper portion and the lower portion to partition the upper space and the lower space, wherein the upper portion includes a hemispherical upper cover and an annular upper flange coupled to the upper cover, wherein the lower portion includes a hemispherical lower cover and an annular lower flange coupled to the lower cover, wherein the upper flange and the lower flange are connected through a fastening member, wherein the diaphragm includes a plurality of first holes and includes a reinforcing plate disposed on and stacked on the diaphragm, and A device for manufacturing a fluid container in which a reinforcing plate is positioned so as not to overlap with the first hole. Claim 2 delete Claim 3 A device for manufacturing a fluid container according to claim 1, wherein the upper flange comprises a first surface in contact with the outer hemispherical surface of the upper cover and a second surface in contact with the lower surface of the upper cover. Claim 4 In claim 3, the lower flange comprises a third surface in contact with the outer hemispherical surface of the lower cover and a fourth surface in contact with the bottom surface of the lower cover. Claim 5 In claim 1, the diaphragm is arranged to overlap with the upper flange and the lower flange, forming a device for manufacturing a fluid container. Claim 6 In claim 3, the fastening member is a device for manufacturing a fluid container that penetrates the first hole. Claim 7 In claim 4, a device for manufacturing a fluid container in which the thickness of the reinforcing plate is smaller than the thickness of the diaphragm. Claim 8 A device for manufacturing a fluid container according to claim 1, further comprising a sensor unit disposed on the upper cover to measure the internal pressure of the upper part and the internal pressure of the lower part. Claim 9 In claim 8, a device for manufacturing a fluid container comprising a valve that regulates the internal pressure of the upper and lower parts based on the pressure measured by the sensor part.