WO2021086043A2

WO2021086043A2 - Medicinal liquid supply control device, reservoir assembly for medicinal liquid supply control device, and medicinal liquid injection apparatus comprising same

Info

Publication number: WO2021086043A2
Application number: PCT/KR2020/014896
Authority: WO
Inventors: 김용현
Original assignee: 김용현
Priority date: 2019-11-01
Filing date: 2020-10-29
Publication date: 2021-05-06
Also published as: WO2021086043A3

Abstract

A medicinal liquid supply control device according to a disclosed embodiment comprises: a reservoir positioned on a second flow path to form an internal space in which medicinal liquid is stored, and having, in a portion of the outer surface thereof, an inflow hole and an outflow hole which are connected to the internal space; and a reservoir support part to which the portion of the reservoir is fixed and which has an inflow connection hole connected to the inflow hole and an outflow connection hole connected to the outflow hole.

Description

A chemical liquid supply control device, a reservoir assembly for a chemical liquid supply control device, and a chemical liquid injection device including the same

The present disclosure relates to a chemical liquid injection device including a chemical liquid supply control device for controlling a supply amount of a chemical liquid, a reservoir assembly for a chemical liquid supply control device, and a chemical liquid supply control device.

In order to supply a drug to a patient, a drug solution injection device is known for injecting a liquid drug solution (for example, an injection solution) to a patient. Using a chemical injection device, the chemical liquid in a predetermined storage space passes through a passage connected to the patient (for example, an inner space of a tube and an injection needle), and flows into the patient's body.

In order to prevent air from entering the patient's body during the process of using such a chemical injection device, priming the inside of the flow path through which the chemical solution moves in the state before connecting a member connected to the patient such as a catheter or injection needle. A priming operation for filling a liquid (for example, a chemical solution or saline solution to be injected) is known.

Meanwhile, among the chemical solutions, there are pharmaceutical solutions (eg, antibiotics, analgesics, and anticancer drugs) that must be injected into the patient's body by limiting the amount of injection per hour. In principle, these chemicals are injected in a certain amount per hour into the patient's body. However, according to conditions such as the patient's condition, it is also necessary to temporarily increase the supply amount of the drug and inject it. This temporary increase in chemical solution is called bolus injection. For bolus injection, a chemical solution supply control device is known that adjusts the injection amount of the chemical solution per hour.

Embodiments of the present disclosure provide a device capable of reducing the remaining amount of a chemical liquid when injecting a chemical liquid into a patient's body.

Embodiments of the present disclosure provide a device capable of reducing the time required to fill a liquid for priming in a flow path of a chemical liquid injection device.

An aspect of the present disclosure provides embodiments of a chemical liquid supply control apparatus having a chemical liquid flow path guiding the flow of the chemical liquid. The chemical liquid flow path of the chemical liquid supply control apparatus according to an exemplary embodiment includes a first flow path for guiding a chemical liquid to flow from an inlet to an outlet, and a classification point of the first flow path to guide the chemical liquid to be classified, and the classified chemical liquid is the first flow path. It includes a second flow path that can be opened and closed and guided to be joined at a confluence point located on a downstream side of the splitting point of one flow path. The chemical liquid supply control device includes: a reservoir positioned on the second flow path to form an inner space for storing the chemical liquid, and forming an inlet hole and an outlet hole connected to the inner space in a portion of an outer surface; And an outflow connection in which the portion of the reservoir is fixed, an inflow connection hole forming a part of the second flow path and connected to the inflow hole is formed, forming a part of the second flow path, and connected to the outflow hole. It includes a reservoir support part in which a hole is formed.

In embodiments, the reservoir support part may be disposed under the reservoir. The chemical liquid supply control device may further include a reservoir push member disposed on the upper side of the reservoir and configured to move downward to pressurize the reservoir.

In embodiments, a gap in the vertical direction of the upper side of the reservoir support part and the lower side of the reservoir push member at a position corresponding to the one portion is different from the position corresponding to the one portion, and the upper side surface And a gap in the vertical direction of the lower side.

In embodiments, one of the upper side of the reservoir support part and the lower side of the reservoir push member includes a convex surface in the other direction, and the other is a concave surface corresponding to the convex surface. Can include.

In embodiments, the part may be located in the center of the lower side of the reservoir. A gap in the vertical direction between the convex surface and the concave surface in the central portion of the reservoir may be greater than a gap in the vertical direction between the convex surface and the concave surface in the edge portion of the reservoir.

In embodiments, the part may be located in the center of the lower side of the reservoir. On a cross section vertically crossing the center of the reservoir, the concave surface may have a greater curvature than the convex surface.

In embodiments, the lower side of the reservoir push member may be formed of a material that is more flexible than the reservoir support part.

In embodiments, the reservoir push member includes: a reservoir pressing unit having a lower side for pressing the reservoir; And an upper plate coupled to the upper side of the reservoir pressing unit. The reservoir pressing part may be formed of a material that is more flexible than the upper plate.

In embodiments, the chemical liquid supply control device, the connection part to which the reservoir support part is coupled to the upper side; And a first connection hole that is sandwiched between the reservoir support part and the connection part to contact the reservoir support part and the connection part, forms a part of the second flow path, and is connected to the inflow connection hole, and the first connection hole is formed. 2 A sealing plate constituting a part of the flow path and having a second connection hole connected to the outlet connection hole may be further included.

In embodiments, the reservoir may be configured such that the volume of the inner space can be changed.

Another aspect of the present disclosure provides embodiments of a reservoir assembly for a device for regulating a chemical supply. A reservoir assembly according to an exemplary embodiment includes: a reservoir positioned on the chemical liquid flow path to form an inner space for storing a chemical liquid, and forming an inlet hole and an outlet hole connected to the inner space in a portion of an outer surface; And a portion of the reservoir is fixed, an inlet connection hole constituting a part of the chemical liquid flow path and connected to the inlet hole is formed, and an outlet connection hole constituting a part of the chemical liquid flow channel and connected to the outlet hole. It may include a reservoir support part to be formed.

In embodiments, an upper surface of the reservoir support part may include an upwardly convex surface.

In embodiments, the one portion may be located at the center of the lower side of the reservoir, and the convex surface may be formed to protrude from a position corresponding to the center.

In embodiments, the inlet hole and the inlet connection hole may be connected vertically, and the outlet hole and the outlet connection hole may be connected vertically.

Another aspect of the present disclosure provides embodiments of a chemical liquid injection device. A chemical solution injection device according to an exemplary embodiment includes: a pumping module configured to pressurize a chemical solution; An extension tube configured to flow the chemical liquid discharged from the pumping module according to the pressurization in the pumping module; And a chemical liquid supply control device having a chemical liquid flow path connected to the extension tube. The chemical liquid flow path includes a first flow path for guiding a chemical liquid to flow from an inlet to an outlet, and guides the chemical liquid to be classified at a fractionation point of the first flow passage, and the classified chemical liquid is fed to a downstream side of the fractionation point of the first flow passage. It guides to be joined at the confluence point located and includes a second flow path capable of opening and closing. The chemical liquid supply control device includes: a reservoir positioned on the second flow path to form an inner space for storing the chemical liquid, and forming an inlet hole and an outlet hole connected to the inner space in a portion of an outer surface; And an outflow connection in which the portion of the reservoir is fixed, an inflow connection hole forming a part of the second flow path and connected to the inflow hole is formed, forming a part of the second flow path, and connected to the outflow hole. It includes a reservoir support part in which a hole is formed.

The chemical liquid flow path of the chemical liquid supply control apparatus according to another exemplary embodiment of the present disclosure includes a first flow path for guiding a chemical liquid to flow from an inlet to an outlet, and a classification point of the first flow path to guide and classify the chemical liquid. And a second flow path capable of guiding and opening and closing the first flow path so that the chemical solution is joined at a confluence point located on a downstream side of the splitting point of the first flow path. The chemical solution supply control device includes: a body including a plurality of parts assembled with each other; And at least one sealing plate sandwiched between two adjacent parts among the plurality of parts to contact the two adjacent parts. One of the two adjacent parts is recessed in a direction opposite to the direction in contact with the surface of the sealing plate to form at least one flow path groove extending along the surface, and the flow path groove is covered with the sealing plate and the It forms part of the chemical flow path.

In embodiments, the chemical liquid flow path may pass through the two adjacent parts and the sealing plate.

In embodiments, a connection hole connected to the flow path groove and forming a part of the chemical liquid flow path may be formed in the sealing plate.

In embodiments, a part of the chemical liquid flow path may be formed in the other of the two adjacent parts, and a part of the other chemical liquid flow path, the connection hole, and the flow path groove may be sequentially connected.

In embodiments, at least one extension hole connected to the flow path groove and constituting a part of the chemical liquid flow path may be formed in one of the two adjacent parts.

In embodiments, the at least one extension hole may include a plurality of extension holes.

In embodiments, one of the two adjacent parts may include a flow path guide rib protruding toward the surface and extending along the surface to partition the flow path groove, and contacting the sealing plate. .

In embodiments, a material of the sealing plate may be a material that is more flexible than a material of the two adjacent parts.

In embodiments, a first classification guide point may be located between the classification point and the confluence point on the first flow path, and a second classification guide point may be located between the classification point and the confluence point on the second flow path. . The classification point, the first classification guide point, and the second classification guide point may be located in the flow path groove.

In embodiments, a first confluence guide point may be located between the classification point and the confluence point on the first flow path, and a second confluence guide point may be located between the classification point and the confluence point on the second flow path. . The confluence point, the first confluence guide point, and the second confluence guide point may be located in the flow path groove.

In embodiments, the at least one flow path groove may include a classification flow path groove and a confluence flow path groove. A first classification guide point may be located between the classification point and the confluence point on the first flow path, and a second classification guide point may be located between the classification point and the confluence point on the second flow path. The classification point, the first classification guide point, and the second classification guide point may be located in the classification flow path groove. A first confluence guide point may be located between the first classification guide point and the confluence point on the first flow path, and a second confluence guide point may be located between the second classification guide point and the confluence point on the second flow path. . The confluence point, the first confluence guide point, and the second confluence guide point may be located in the confluence channel groove.

In embodiments, the inlet and the outlet may be formed in the other one of the two adjacent parts.

In embodiments, it may further include a reservoir positioned on the second flow path to form an inner space for storing the chemical solution. On the second flow path, a reservoir inflow flow path may be located between the split point and the inner space, and a reservoir outlet flow path may be located between the confluence point and the inner space. The at least one channel groove may include an inflow channel groove that is covered with the sealing plate and forms a part of the reservoir inflow channel; And an outlet passage groove that is covered with the sealing plate and forms a part of the reservoir outlet passage.

In embodiments, a first connection guide flow path may be positioned between the classification point and the confluence point on the first flow path. The at least one flow path groove may further include a connection flow path groove that is covered by the sealing plate and forms the first connection guide flow path.

In embodiments, a first connection guide flow path may be positioned between the classification point and the confluence point on the first flow path. The flow path groove may be covered with the sealing plate to form the first connection guide flow path.

In embodiments, the apparatus for controlling the supply of the chemical liquid may further include a reservoir positioned on the second flow path to form an inner space for storing the chemical liquid. The reservoir may be supported on the other of the two adjacent parts.

In embodiments, the chemical liquid supply control device includes: a first chemical liquid transfer pipe forming a capillary flow path constituting a part of the first flow path, and disposed in at least one of the plurality of parts; And a second chemical liquid transfer pipe forming a capillary flow path constituting a part of the second flow path, and disposed in at least one of the plurality of parts.

In embodiments, the plurality of parts may include: a second part supporting one end of the first chemical liquid transport pipe and one end of the second chemical liquid transport pipe; And a third part coupled to the second part and supporting the other end of the first chemical liquid transfer pipe and the other end of the second chemical liquid transfer pipe.

In embodiments, the plurality of parts may include: a first part and a second part coupled to each other; And a third part and a fourth part coupled to each other. The at least one sealing plate may include a lower sealing plate sandwiched between the first part and the second part; And an upper sealing plate sandwiched between the third part and the fourth part.

In embodiments, the chemical liquid supply control device includes: an upstream air passage filter positioned on the first flow path upstream of the splitting point and configured to discharge air in the first flow path to the outside; And a downstream air passing filter positioned on the first flow path downstream of the confluence point and configured to discharge air in the first flow path to the outside.

A chemical liquid injection device according to another exemplary embodiment of the present disclosure includes a pumping module configured to pressurize a chemical liquid; An extension tube configured to flow the chemical liquid discharged from the pumping module according to the pressurization in the pumping module; And a chemical liquid supply control device having a chemical liquid flow path connected to the extension tube. The chemical liquid flow path includes a first flow path for guiding a chemical liquid to flow from an inlet to an outlet, and guides the chemical liquid to be classified at a fractionation point of the first flow passage, and the classified chemical liquid is fed to a downstream side of the fractionation point of the first flow passage. It guides to be joined at the confluence point located and includes a second flow path capable of opening and closing. The chemical solution supply control device includes: a body including a plurality of parts assembled with each other; And at least one sealing plate sandwiched between two adjacent parts among the plurality of parts to contact the two adjacent parts. One of the two adjacent parts is depressed in a direction opposite to the direction in contact with the surface of the sealing plate to form at least one flow path groove extending along the surface. The flow path groove is covered with the sealing plate and forms a part of the chemical liquid flow path.

According to the embodiments of the present disclosure, by reducing or eliminating the use of the tube in forming the flow path of the chemical liquid required for the chemical liquid supply control device, the remaining amount of the lost chemical liquid can be reduced, and the time to fill the liquid for priming can be reduced. I can.

According to the embodiments of the present disclosure, a flow path of the chemical solution can be formed only by coupling between components other than the tube, thereby improving the manufacturing convenience of the chemical solution supply control device.

1 is a conceptual diagram showing the entire system of a chemical solution injection device 1 according to an embodiment of the present disclosure.

FIG. 2 is a perspective view of the chemical liquid supply control apparatus 80 according to the first embodiment of the present disclosure, and shows a state in which the user manipulates the button member 700 with the coater 1100 removed.

3 is a perspective view showing a state in which the case 100 is removed from the chemical solution supply control device 80 of FIG. 2.

4 is a perspective view showing a state in which the button member 700 is removed from the chemical liquid supply control device 80 of FIG. 3.

5 is an exploded perspective view of the chemical solution supply control device 80 of FIG. 1.

6 is an exploded perspective view of the chemical solution supply control device 80 of FIG. 5 viewed from a different angle.

FIG. 7 is an exploded perspective view showing only some of the components of FIG. 5, and unlike FIG. 5, some parts are assembled to each other.

FIG. 8 is an exploded perspective view of FIG. 7 viewed from a different angle, and an enlarged view (E) of a part is shown.

9 is an elevational view of the reservoir assembly A400 of FIG. 7.

10 is a perspective view showing a cross-section of the chemical solution supply control device 80 taken along the line S1-S1' of FIG. 8.

11 is a cross-sectional view of the chemical solution supply control device 80 taken along the line S2-S2' of FIG. 8.

12 is a cross-sectional view of the chemical solution supply control device 80 taken along line S3-S3' of FIG. 8.

13 is a cross-sectional view of the chemical solution supply control device 80 taken along line S4-S4' of FIG. 8.

14 is an exploded perspective view of the lock assembly 600 and the body 200 of FIG. 5.

15 is a perspective view showing a state in which the lock assembly 600 of FIG. 14 is coupled.

16 is a perspective view of the button member 700 of FIG. 5 in a partially cut-away state.

17A is a cross-sectional view of the chemical solution supply control device 80 taken along line S5-S5' of FIG. 8, showing a locked state.

FIG. 17B is a cross-sectional view of the chemical solution supply control device 80 taken along line S5-S5' of FIG. 8, and is a view showing a released state.

18 is a perspective view of a chemical liquid supply control device 80 ′ according to a second embodiment of the present disclosure, and is a view showing methods in which the coater 1100 can be coupled to the chemical liquid supply control device 80 ′.

19 is a perspective view showing a state in which the case 100 is removed from the chemical solution supply control device 80 ′ of FIG. 18.

FIG. 20 is a perspective view showing a state in which the inner housing 1500 is additionally removed from the chemical solution supply control device 80 ′ of FIG. 19.

FIG. 21 is a perspective view showing a state in which the button member 700, the selector 1800, and the lock bar 1900 are additionally removed from the chemical liquid supply control device 80' of FIG. 20. Referring to FIG.

FIG. 22 is an exploded perspective view of the chemical solution supply control device 80' of FIG. 18.

23 is an exploded perspective view of the chemical solution supply control device 80' of FIG. 22 viewed from a different angle.

FIG. 24 is an exploded perspective view showing only some of the components of FIG. 22, and unlike FIG. 22, some parts are assembled to each other.

FIG. 25 is an exploded perspective view of FIG. 24 viewed from a different angle, and an enlarged view (E) of a part is shown.

FIG. 26 is a perspective view showing a cross-section of the chemical solution supply control device 80' taken along the line S6-S6' of FIG. 34. FIG.

FIG. 27 is a cross-sectional view of the chemical solution supply control device 80' taken along the line S7-S7' of FIG. 25. As shown in FIG.

FIG. 28 is a cross-sectional view of the chemical solution supply control device 80' taken along the line S8-S8' of FIG. 25. FIG.

FIG. 29 is a cross-sectional view of the chemical solution supply control device 80' taken along the line S9-S9' of FIG. 25. FIG.

30 is a cross-sectional view of the chemical solution supply control device 80' taken along the line S10-S10' of FIG. 25.

Embodiments of the present disclosure are illustrated for the purpose of describing the technical idea of the present disclosure. The scope of the rights according to the present disclosure is not limited to the embodiments presented below or specific descriptions of these embodiments.

All technical terms and scientific terms used in the present disclosure, unless otherwise defined, have meanings generally understood by those of ordinary skill in the art to which the present disclosure belongs. All terms used in the present disclosure are selected for the purpose of more clearly describing the present disclosure, and are not selected to limit the scope of the rights according to the present disclosure.

Expressions such as "comprising", "having", "having" and the like used in the present disclosure are open terms that imply the possibility of including other embodiments, unless otherwise stated in the phrase or sentence in which the expression is included. It should be understood as (open-ended terms).

Expressions in the singular form described in the present disclosure may include the meaning of the plural form unless otherwise stated, and the same applies to the expression in the singular form described in the claims.

Expressions such as "first" and "second" used in the present disclosure are used to distinguish a plurality of elements from each other, and do not limit the order or importance of the corresponding elements.

In the present disclosure, when a component is referred to as being "connected" or "coupled" to another component, the component may be directly connected to or coupled to the other component, or a new It is to be understood that it may be connected or may be combined via other components.

The direction indicators such as "up" and "up" used in the present disclosure mean the direction of the arrow U in the accompanying drawings, and the direction indicators such as "down" and "down" refer to the direction of the arrow D in the accompanying drawings. However, this is a criterion for explaining so that the present disclosure can be clearly understood to the last, and the direction indicators may be interpreted accordingly depending on where the reference is placed.

"Upstream" and "downstream" used in the present disclosure are defined based on a direction in which the chemical liquid flows when the pumping module 10 pressurizes the chemical liquid. Specifically, directions of arrows F2 and F3 of FIG. 1 and arrows F4 of FIG. 5 are defined as a downstream direction, and a direction opposite to the downstream direction is defined as an upstream direction.

"Medicinal solution" used in the present disclosure should be understood to include not only a liquid containing a therapeutic substance, but also a liquid that can be used with a therapeutic substance or aided in a therapeutic substance, and a liquid that can be injected into a patient. The liquid for priming to be described later is one of these chemical solutions.

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals may be assigned to the same or corresponding components. In addition, in the description of the following embodiments, overlapping descriptions of the same or corresponding components may be omitted. However, even if description of a component is omitted, it is not intended that such component is not included in any embodiment.

1 is a conceptual diagram showing the entire system of a chemical solution injection device 1 according to an embodiment of the present disclosure. A process of injecting a chemical solution into a patient using the chemical solution injection device 1 according to embodiments of the present disclosure may include a priming step and a chemical solution injection step that are sequentially performed.

Referring to FIG. 1, in the priming step, the liquid for priming flows along the extension tube 30. The priming liquid flowing along the extension tube 30 flows into the chemical liquid supply control device 80. The chemical liquid injection device 1 may include an end cap 70 that is detachably connected to the downstream side of the chemical liquid supply control device 80. Air inside the extension tube 30 may be discharged to the outside through the end cap 70.

Accordingly, the priming liquid is filled in the extension tube 30 and the chemical liquid supply control device 80. The priming liquid may be a liquid containing a therapeutic substance or a liquid that can be injected into a patient such as saline.

The end cap 70 is configured such that the air passing through the chemical liquid supply control device 80 and the priming liquid are introduced into the interior. The end cap 70 may be configured to allow air to flow to the outside but prevent the priming liquid from leaking to the outside.

The end cap 70 includes a vent filter 71 that blocks the passage of the priming liquid but allows the gas to pass. The vent filter 71 includes a hydrophobic filter. The end cap 70 may include a sponge 72 disposed on the upstream side of the vent filter 71. The end cap 70 includes an end cap casing 73 accommodating the vent filter 71 therein. The end cap casing 73 accommodates the sponge 72 therein. The end cap casing 73 forms a vent hole 73a through which gas passes. The end cap 70 includes an end cap coupling portion 74 configured to be engageable with a downstream connection portion 36 constituting a downstream end of the extension tube 30 of the chemical solution injection device 1. Arrow E2 in FIG. 1 shows the direction of engagement and separation of the end cap engagement portion 74 with respect to the downstream connection portion 36.

When the end cap 70 is filled with the priming liquid, the end cap 70 is separated from the chemical liquid supply control device 80, and the chemical liquid supply control device 80 and the patient connection units 60, 60' are connected. I can.

The

patient connection units

60 and 60 ′ may include an injection needle 61 or a catheter. The patient connection units 60 and 60' include components such as an injection needle 61 that are introduced into the patient's body.

The

patient connection units

60 and 60 ′ may include a “injection part including a component such as the injection needle 61 that is introduced into the patient's body” and “remaining parts”. The lead-in part and the other part may be detachably coupled to each other. In this case, in a state where the lead-in part is connected to the patient, but separated from the remaining part, the user may combine the remaining part with the chemical supply control device 80, and then the inlet part and the remaining part are combined with each other. I can. In this case, the liquid that has passed through the chemical supply control device 80 may be sequentially introduced into the patient's body through the remaining parts and the lead-in parts.

The patient connection unit 60, 60' includes an injection support 62 that supports an injection needle 61. The patient connection units 60 and 60' include a unit coupling portion 63 configured to be coupled to the downstream connection portion 36 of the chemical solution injection device 1. Arrow E3 in FIG. 1 shows the direction of engagement and separation of the unit engagement portion 63 with respect to the downstream connecting portion 36.

As an example, the patient connection unit 60 may be configured by sequentially connecting the injection needle 61, the injection support 62, and the unit coupling part 63.

As another example, the patient connection unit 60 ′ further includes a patient connection tube fixing part 65 ′ connected to the downstream side of the unit coupling part 63. The patient connection unit 60 ′ further includes a patient connection tube 64 ′ that connects the patient connection tube fixing part 65 ′ and the injection support part 62. The patient connection tube 64 ′ may be formed of a flexible material. The patient connection unit 60' consists of an injection needle 61, an injection support 62, a patient connector 64', a patient connector fixing portion 65', and a unit coupling portion 63 sequentially connected. Can be.

In the step of injecting the chemical liquid, the chemical liquid is introduced into the patient's body according to the pressure in the pumping module 10. The chemical liquid in the chemical liquid injection step is a liquid containing a therapeutic substance. When the priming liquid is not a liquid containing a therapeutic substance but a saline solution, the priming liquid first flows into the patient's body, and the liquid containing the therapeutic substance flowing after the priming liquid is the patient. Can enter the body.

The pumping module 10 includes a chamber 11 configured to accommodate a chemical solution. The chamber 11 forms an inner space together with the pressing unit 12. A chemical solution may be stored in the inner space. In another embodiment, saline solution or the like may be temporarily stored in the inner space. In the chamber 11, a discharge port portion 11a through which the liquid inside the chamber 11 is discharged is formed.

The pumping module 10 is configured to pressurize the chemical liquid. The pumping module 10 includes a pressurizing unit 12 that pressurizes the liquid inside the chamber 11. The pressing unit 12 can pressurize the liquid inside the chamber 11 by moving in the predetermined pressing direction Ap1. When the liquid is being filled into the chamber 11, the pressing unit 12 moves in a direction Ap2 opposite to the pressing direction Ap1. In FIG. 1, with reference to 12A, a position in a state in which the pressing unit 12 has moved in the opposite direction Ap2 is shown.

The pumping module 10 may include a pressing operation unit 13 that provides power so that the pressing unit 12 moves in the pressing direction Ap1. As an example, the pressurizing operation unit 13 may be configured to pressurize the liquid in the chamber 11 using volume expansion by gas activation. As another example, the pressing operation unit 13 may provide a portion that can be grasped by the user to move the pressing unit 12 in the pressing direction Ap1 by the user's force.

Although not shown, as another example, the pressing unit 12 may be configured to pressurize a liquid using an elastic force of an elastic body such as a balloon. In this case, the pressurizing unit 12 may be configured to pressurize the liquid in the balloon.

The chemical liquid injection valve 20 is configured to be able to fill the liquid into the chamber 11. Liquid may be introduced into the extension tube 30 or the chamber 11 through the chemical solution injection valve 20 from the outside. The chemical liquid injection valve 20 is connected to the extension tube 30, but in another embodiment not shown, the chemical liquid injection valve 20 may be connected to the chamber 11.

The chemical liquid injection valve 20 includes a first extension part 21 connected to a downstream end of the first connection part 31 of the extension tube 30, and an upstream side of the second connection part 32 of the extension tube 30. It includes a second extension portion 22 connected to the end. The chemical injection valve 20 includes an inlet 23 configured to allow liquid to flow from the outside, and an inlet port opening/closing part 24 configured to be detachably coupled to the inlet 23. Arrow E1 of FIG. 1 shows the direction of engagement and separation of the inlet port opening/closing part 24 with the inlet part 23.

The extension tube 30 is configured to guide the flow of the priming liquid. The extension tube 30 may guide the movement of the chemical solution from the pumping module 10 to the chemical solution supply control device 80.

The extension tube 30 is configured so that the chemical liquid flowing out of the pumping module 10 flows according to the pressure in the pumping module 10. The upstream end of the extension tube 30 is connected to the pumping module 10. The extension tube 30 includes an upstream connection part 35 connected to the discharge port part 11a of the pumping module 10. The extension tube 30 includes an end cap 70 or a downstream connection 36 connected to the patient connection unit 60, 60'. The liquid passing through the

upstream sections

31 and 32 of the extension tube 30 flows into the chemical liquid supply control device 80 through the inlet port of the chemical liquid supply control device 80, and flows out of the chemical liquid supply control device 80. It is introduced into the downstream section 33 of the extension tube 30 through the port.

The extension tube 30 includes a first connection part 31 connecting the upstream connection part 35 and the first extension part 21 of the chemical solution injection valve 20. The extension tube 30 includes a second connection part 32 connecting the second extension part 22 of the chemical liquid injection valve 20 and the inlet connection part 217 of the chemical liquid supply control device 80. The extension tube 30 includes a third connection part 33 connecting the outlet connection part 218 and the downstream connection part 36 of the chemical liquid supply control device 80.

The chemical injection device 1 may include at least one connector opening/closing module 40. The connector opening/closing module 40 may press the outside of the extension tube 30 to prevent the flow of liquid at one point in the extension tube 30. The at least one connector opening/closing module 40 includes a first opening/closing module 41 capable of changing whether or not a point B1 of the first connection part 31 is opened or closed, and a point B2 of the second connection part 32. It may include a second opening and closing module 42 that can change whether the opening or closing of ). For example, the connector opening and closing module 40 may be configured in a clamp shape.

In another embodiment not shown, the chemical liquid injection device 1 may include a filter module (not shown) outside the chemical liquid supply control device 80 disposed on the extension tube 30, but in this embodiment, the chemical liquid supply The adjusting device 80 includes a filter to be described later. The filter may include a particle filter that filters impurities and/or an air filter that filters air bubbles (bubbles).

A priming step and a chemical injection step according to an embodiment will be described as follows. In the priming step according to an embodiment, a saline solution or the like is used as the priming liquid, not a chemical solution. In the priming step according to an embodiment, the inlet port opening/closing part 24 is separated from the inlet part 23, and the first connection part 31 is blocked with the first connection pipe opening/closing module 41 (see B1), and the first 1 The rest of the extension tube 30 except for the connection part 31 is opened. Referring to arrows F1, F3 and F4, the liquid for priming such as saline is an inlet 23, a second extension 22, a second connection 32, a chemical supply control device 80, and a third connection ( By sequentially flowing 33), the inside of the extension tube 30 and the inside of the chemical liquid supply control device 80 are filled with the priming liquid.

After the priming step according to an embodiment, a chemical solution injection step according to an embodiment proceeds. In the chemical solution injection step according to an embodiment, the inlet port opening/closing part 24 is separated from the inlet part 23, and the second connection part 32 is blocked by the second connection pipe opening/closing module 42 (see B2), The first connector opening/closing module 41 is separated from the first connector 31 to open the first connector 31. Referring to arrow F0, as the chemical liquid flows into the chamber 11 through the chemical liquid injection valve 20 and the first connection part 31, the pressurization unit 12 moves in the direction Ap2. Thereafter, the inlet port opening/closing portion 24 is coupled to the inlet portion 23, and the second connector opening/closing module 42 is separated from the second connection portion 32 to make the extension tube 30 open. Referring to arrows F2, F3, and F4, the pressurizing unit 12 is then moved in the pressurizing direction (Ap1), so that the chemical solution is transferred to the

upstream sections

31 and 32 of the extension tube, the chemical solution supply control device 80 and the extension The downstream section 33 of the tube can be sequentially passed.

A priming step and a chemical injection step according to another embodiment will be described as follows. In the priming step according to another embodiment, a chemical liquid is used as the priming liquid. In the priming step according to another embodiment, the chemical solution is filled in the chamber 11, the end cap 70 is connected to the downstream connection part 36, the inlet part 23 is blocked by the inlet port opening/closing part 24, and the connection The tube opening/closing module 40 is separated from the extension tube 30 to make the extension tube 30 open. Referring to arrows F2, F3, and F4, the pressurizing unit 12 is then moved in the pressurizing direction Ap1, so that the chemical liquid, which is the priming liquid, is transferred to the

upstream sections

31 and 32 of the extension tube, and the chemical supply control device ( By sequentially flowing through the 80) and the downstream section 33 of the extension tube, the inside of the extension tube 30 and the chemical liquid supply control device 80 are filled with the priming liquid.

After the priming step according to another embodiment, the chemical solution injection step according to another embodiment proceeds. In the chemical solution injection step according to another embodiment, by further moving the pressurizing unit 12 in the pressurizing direction Ap1, referring to arrows F2, F3 and F4, the chemical solution is transferred to the

upstream sections

31 and 32 of the extension tube, It is possible to sequentially pass through the chemical liquid supply control device 80 and the downstream section 33 of the extension tube.

FIG. 2 is a perspective view of the chemical liquid supply control apparatus 80 according to the first embodiment of the present disclosure, and shows a state in which the user manipulates the button member 700 with the coater 1100 removed. 3 is a perspective view showing a state in which the case 100 is removed from the chemical solution supply control device 80 of FIG. 2.

1 to 3, the chemical liquid injection device 1 includes a chemical liquid supply control device 80 having a chemical liquid flow path connected to the extension tube 30. The chemical liquid supply control device 80 has a chemical liquid flow path for guiding the flow of the chemical liquid. The chemical liquid supply control device 80 may include an inlet connection part 217 connected to the extension tube part 32 on the upstream side and an outlet connection part 218 connected to the extension tube part 33 on the downstream side. The chemical liquid may be introduced into the chemical liquid supply control device 80 through the inlet Qi of the inlet connection part 217 and flow out of the chemical liquid supply control device 80 through the outlet Qo of the outlet connection part 218. .

The drug solution supply control device 80 is a device that adjusts the amount of the drug solution supplied to the patient. The chemical liquid flow path of the chemical liquid supply control device 80 may be configured in various ways, but in this embodiment, the chemical liquid flow path includes a first flow path P1 to be described later and a second flow path P2 to be described later. The first flow path P1 guides the chemical liquid to flow from the inlet Qi to the outlet Qo. In a state in which the flow path is not closed by the connection pipe opening/closing module 40 or the first flow path valve 316 of the second embodiment to be described later, the first flow path P1 has a chemical solution from the inlet Qi to the outlet Qo. Guide it to flow continuously. The second flow path P2 guides the chemical liquid to be classified at a fractionation point Qd, which will be described later, of the first flow path P1. The second flow path P2 guides the classified chemical solution to be joined at a confluence point Q, which will be described later, located on the downstream side of the classification point Qd of the first flow path P1. The second flow path P2 may be configured to be open and close.

The chemical liquid supply control device 80 may include a case 100 forming an exterior and a button member 700 provided to be operable by a user. The operation unit 710 that is a part of the button member 700 may be exposed to the outside of the case 100. A user (for example, a patient) can adjust the supply amount of the chemical solution by pressing the operation unit 710. The chemical solution supply control device 80 may include a coater 1100 inserted into the case 100 to prevent a user from manipulating the button member 700 before manipulation. The coater 1100 is inserted into the case 100 while pressing the operation unit 710 downward. When the coater 1100 is separated from the case 100, the button member 700 is moved upward by the elastic member 1000 to be described later, so that the user can press the button member 700 downward.

4 is a perspective view showing a state in which the button member 700 is removed from the chemical liquid supply control device 80 of FIG. 3. 5 is an exploded perspective view of the chemical solution supply control device 80 of FIG. 1. 6 is an exploded perspective view of the chemical solution supply control device 80 of FIG. 5 viewed from a different angle.

3 to 6, the chemical liquid supply control device 80 may include a body 200 forming at least a part of the chemical liquid flow path. The body 200 may include a plurality of

parts

210, 220, 230, and 240. The chemical supply control device 80 may include at least one sealing plate 300 disposed between adjacent two of the plurality of

parts

210, 220, 230, and 240. The chemical liquid supply control device 80 may include a reservoir 400 that stores a chemical liquid. The chemical liquid supply control device 80 may include a reservoir push member 500 configured to press the reservoir 400. The chemical liquid supply control device 80 may include a lock assembly 600 configured to open and close a part of the chemical liquid flow path.

The chemical liquid supply control device 80 may include a button member 700 operated by a user. The chemical liquid supply control device 80 may include a chemical liquid transfer pipe 800 that limits the hourly flow rate of the chemical liquid. The chemical supply control device 80 may include at least one sealer 900 disposed between adjacent two of the plurality of

parts

210, 220, 230, and 240. The chemical supply control device 80 may include an elastic member 1000 configured to elastically deform when the button member 700 is operated. The chemical liquid supply control device 80 may include at least one air passing filter 1200 that filters air in the chemical liquid flow path. The chemical liquid supply control device 80 may include a hydrophilic boundary filter 1300 disposed on the chemical liquid flow path.

3 and 4, the body 200 may include a guide protrusion 260 protruding in a direction perpendicular to the vertical direction. The button member 700 may be disposed to be slidable vertically along the outer surface of the body 200. The button member 700 may include a sliding part 730 facing the outer surface of the body 200.

A guide hole 730a into which the guide protrusion 260 is inserted is formed in the sliding part 730. The guide protrusion 260 may perform relative movement in the vertical direction along the guide hole 730a. The movement direction of the button member 700 with respect to the body 200 is limited in the vertical direction by the guide hole 730a and the guide protrusion 260. The sliding part 730 includes a head insertion part 730b forming a groove or a hole into which a head part 633, which will be described later, of the lock assembly 600 can be inserted. The head portion 633 may be inserted into the groove or hole of the head insertion portion 730b in a release state, which will be described later.

The body 200 includes a push guide part 234 that guides the reservoir push member 500 in a moving direction. The push guide part 234 may form a hole or a groove into which the protrusion 515 of the reservoir push member 500 is inserted. The hole or groove of the push guide part 234 extends in the vertical direction, so that the protrusion 515 may guide the protrusion 515 to move in the vertical direction along the groove or hole. In this embodiment, the push guide portion 234 is formed on the third part 230, and the protrusion 515 is formed on the upper plate 510.

The body 200 may include a limit unit 270 configured to be engaged with the reservoir push member 500 so as to limit a maximum movement range of the reservoir push member 500 in the upward direction. The limit unit 270 may include a lower side surface capable of contacting the protrusion 515 of the reservoir push member 500. The limit part 270 may be an upper end of the push guide part 234. In this embodiment, the limit part 270 may be formed on the third part 230.

4 to 6, the case 100 may include a first case part 100A and a second case part 100B that are coupled to each other. The case 100 may accommodate the body 200 therein. The case 100 may accommodate a portion of the button member 700 except for the operation unit 710 therein. A hole 100h into which a user's finger can be inserted may be formed in the case 100. The manipulation unit 710 may be exposed within the hole 100h. The coater 1100 may be inserted into the case 100 so as to cross the hole 100h in a direction perpendicular to the penetrating direction of the hole 100h. A hole 100g into which the coater 1100 is inserted is formed in the case 100.

The body 200 may include a plurality of

parts

210, 220, 230, and 240. The plurality of

parts

210, 220, 230, and 240 may be assembled with each other. The plurality of

parts

210, 220, 230, and 240 are sequentially arranged and may be assembled with each other. The plurality of

parts

210, 220, 230, and 240 are arranged in a vertical direction and may be assembled with each other.

The plurality of

parts

210, 220, 230, and 240 may include a first part 210 and a second part 220 coupled to each other. The plurality of

parts

210, 220, 230, and 240 may include a third part 230 and a fourth part 240 coupled to each other. The plurality of

parts

210, 220, 230, and 240 may include a second part 220 and a third part 230 coupled to each other. Depending on the embodiment, the first part 210, the second part 220, the third part 230 and/or the fourth part are'filter support part 210','branch part 220', respectively, It may also be referred to as a'connection part 230' and/or a'reservoir support part 240'.

The plurality of

parts

210, 220, 230, and 240 may be hook-coupled to each other. One of the two parts adjacent to each other of the plurality of

parts

210, 220, 230, and 240 may include a hook and the other may include a hook coupling portion to which the hook is engaged. The hook coupling portion may form a groove or a hole into which the hook is inserted. A plurality of hooks spaced apart from each other may be formed along a circumference of one part, and a plurality of hook coupling portions corresponding to the plurality of hooks may be formed along a circumference of another part coupled to the one part.

In one embodiment, the first hook 215 of the first part 210 may be coupled to the first hook coupling portion 225 of the second part 220. The third hook 235 of the third part 230 may be coupled to the third hook coupling part 226 of the second part 220. The fourth hook 245 of the fourth part 240 may be coupled to the fourth hook coupling portion 236 of the third part 230.

In this embodiment, at least one sealing plate 300 includes a lower sealing plate 310 disposed between the first and

second parts

210 and 220 adjacent to each other, and the third and fourth parts 230 adjacent to each other. 240), but in another embodiment not shown, only one of the above sealing plates may be provided, and a sealing plate may be disposed between the other two parts from the present embodiment. May be. The sealing plate 310 may be referred to as “lower sealing plate 310”, and the sealing plate 320 may be referred to as “upper sealing plate 320”.

Any one of two adjacent parts (meaning the first and

second parts

210 and 220 or the third and fourth parts 230 and 240) with the sealing plate 300 interposed therebetween is a sealing plate 300 ) To form at least one channel groove 222 and/or 232 extending along the surface of the sealing plate 300 by being depressed in a direction opposite to the direction in contact with the surface of the sealing plate 300. In this embodiment, the flow path groove 222 is formed in the second part 220 of the two

adjacent parts

210 and 220, but in another embodiment not shown, the flow path groove is formed in the first part 210. May be. In this embodiment, the flow path groove 232 is formed in the third part 230 of the two

adjacent parts

230 and 240, but in another embodiment not shown, the flow path groove is formed in the fourth part 240. May be. Hereinafter, an exemplary embodiment in which the flow path groove 222 is formed in the second part 220 and the flow path groove 232 is formed in the third part 230 is described, but the present disclosure is not limited thereto.

The

flow path grooves

222 and 232 are covered with the sealing plate 300 to form a part of the chemical liquid flow path. The inlet Qi is located at the upstream point of the chemical liquid flow path, and the outlet Qo is located at the downstream end point of the chemical liquid flow path.

A flow path groove 222 may be formed in any one 220 of two

adjacent parts

210 and 220 and an inlet Qi and an outlet Qo may be formed in the other 210. A channel groove 232 may be formed in one of the adjacent two

parts

230 and 240 and a reservoir may be supported in the other 240.

Any one of two adjacent parts (meaning the first and

second parts

210 and 220 or the third and fourth parts 230 and 240) with the sealing plate 300 interposed therebetween is a sealing plate 300 ) May include a flow path guide rib 221 and/or 231 protruding toward the surface and extending along the surface. The flow path guide

ribs

221 and 231 partition the flow path grooves 222 and 223. The flow path guide

ribs

221 and 231 contact the sealing plate. When the flow path guide

ribs

221 and 231 press the sealing plate 300, the flow path formed by the flow path grooves 222 and 223 may be more stably sealed.

In any one of two adjacent parts (meaning the first and

second parts

210 and 220 or the third and fourth parts 230 and 240) with the sealing plate 300 interposed therebetween, the flow path groove 222 At least one

extension hole

220h and 230h connected to the chemical liquid flow path 223 may be formed. At least one of the extension holes 220h and 230h may extend in the vertical direction. The at least one extension hole 220h may include a plurality of extension holes 220h1, 220h2, 220h3, 220h4. The at least one extension hole 230h may include a plurality of extension holes 230h1, 230h2, 230h3, and 230h4.

FIG. 7 is an exploded perspective view showing only some of the components of FIG. 5, and unlike FIG. 5, some parts are assembled to each other. FIG. 8 is an exploded perspective view of FIG. 7 viewed from a different angle, and an enlarged view (E) of a part is shown.

Referring to the enlarged view (E) of FIG. 8, the points Qd, Qd1, Qd2, Qu, Qu1, and Qu2 located in the chemical liquid flow path will be described as follows. The fractionation point Qd is a point at which the chemical liquid flowing along the first flow path P1 is classified into the second flow path P2. The confluence point Q is a point at which the chemical liquid flowing along the second flow path P2 merges into the first flow path P1. A first classification guide point Qd1 is positioned on the first flow path P1 between the classification point Qd and the confluence point Q. On the second flow path P2, the first classification guide point Qd1 is positioned between the classification point Qd and the confluence point Q. A first confluence guide point Q1 is positioned on the first flow path P1 between the split point Qd and the confluence point Q. The first confluence guide point Q1 may be located between the first classification guide point Qd1 and the confluence point Q on the first flow path P1. On the second flow path P2, a second confluence guide point Q2 is positioned between the split point Qd and the confluence point Q. The second confluence guide point Q2 may be positioned between the second classification guide point Qd2 and the confluence point Q on the second flow path P2. The sorting point Qd, the first sorting guide point Qd1, and the second sorting guide point Qd2 may be located in the flow path groove 222a. A confluence point (Qu), a first confluence guide point (Qu1), and a second confluence guide point (Qu2) may be located in the flow path groove 222b.

5 to 8, the first part 210 may form a part of an inflow passage P1i and a part of an outflow passage P1o to be described later of the first passage P1 (see FIG. 10 ). . An inlet Qi and an outlet Qo may be formed in the first part 210. The first part 210 may include an inlet connecting portion 217 forming an inlet Qi and an outlet connecting portion 218 forming an outlet Qo. The first part 210 may include a filter body 210A and a filter cap 210B coupled to each other.

In an embodiment, the boundary filter 1300 may be disposed on the filter body 210A. The filter cap 210B may be disposed in a direction facing one surface of the boundary filter 1300.

In an embodiment, at least one air passing filter 1200 may be disposed in the first part 210. At least one air passing filter 1200 may be fixed to the filter cap 210B. The first part 210 may form a passage for air branching from the chemical liquid passage. The first part 210 may form at least one vent hole (not shown) positioned at a point where the air passage is connected to an external space. The vent hole 910h may be formed in the filter cap 210B.

The filter cap 210B may include an inlet filter cap 210B1 forming a vent hole through which air branching from the inlet flow path P1i flows out. The filter cap 210B may include an outflow filter cap 210B2 forming a vent hole through which air branching from the outflow passage P1o flows out.

At least one flow path hole 210h constituting a part of the chemical liquid flow path is formed in the first part 210. The at least one channel hole 210h may include an inflow channel hole 210h1 constituting a part of the inflow channel P1i. The at least one channel hole 210h may include an outflow channel hole 210h2 constituting a part of the outflow channel P1o. One end of the inflow passage hole 210h1 forms an inlet Qi, and the other end of the inflow passage hole 210h1 faces the sealing plate 310. One end of the outlet passage hole 210h2 forms an outlet Qo, and the other end of the outlet passage hole 210h2 faces the sealing plate 310.

An insertion groove 214 into which the protrusion 314 of the sealing plate 310 is inserted is formed in the first part 210. The insertion groove 214 is formed by being recessed in a direction opposite to the direction facing the sealing plate 310. The insertion groove 214 may include an upstream insertion groove 214a in which the other end of the inflow passage hole 210h1 is located. The insertion groove 214 may include a downstream insertion groove 214b in which the other end of the outlet passage hole 210h2 is located.

The sealing plate 310 may be in contact with the lower side of the second part 220. The first part 210 may be coupled to the lower side of the second part 220. The chemical liquid transfer pipe 800 may be disposed on the upper side of the second part 220. The second part 220 may support the lower end of the chemical liquid transfer pipe 800. The second part 220 may support one end of the first chemical liquid transfer pipe 810. The second part 220 may support one end of the second chemical liquid transfer pipe 820.

At least one flow path groove 222 may be formed in the second part 220. The at least one channel groove 222 may include at least one of a classification channel groove 222a and a confluence channel groove 222b. The flow path groove 222a may be covered with the sealing plate 310 to form the flow paths P1a and P2a. The confluence passage groove 222b may be covered with the sealing plate 310 to form confluence passages P1e and P2e.

The sorting point Qd, the first sorting guide point Qd1, and the second sorting guide point Qd2 may be located in the sorting channel groove 222a. The flow path groove 222a may extend in a direction perpendicular to the through direction (up-down direction) of the connection hole 310a of the sealing plate 310. The upper end of the connection hole 310a faces the classification point Qd.

A confluence point (Qu), a first confluence guide point (Qu1), and a second confluence guide point (Qu2) may be located in the confluence channel groove 222b. The confluence channel groove 222a may extend in a direction perpendicular to the through direction (up-down direction) of the connection hole 310b of the sealing plate 310. The upper end of the connection hole 310b faces the confluence point (Qu).

The classification flow path groove 222a and the confluence flow path groove 222b may be disposed to be horizontally spaced apart from each other. The classification flow path groove 222a and the confluence flow path groove 222b may be disposed parallel to each other.

The second part 220 may include a flow path guide rib 221 protruding downward to contact the sealing plate 310. The flow path guide rib 221 may include a flow path guide 221a for partitioning the flow path groove 222a. The flow guide rib 221 may include a confluence flow path guide 221b that partitions the confluence flow path groove 222b.

At least one extension hole 220h constituting a part of the chemical liquid flow path is formed in the second part 220. The extension hole 220h may extend in the vertical direction. The lower end of the extension hole 220h is located in the flow path groove 222.

The at least one extension hole 220h is an extension hole 220h1 constituting a part of a first upstream extension flow path P1b to be described later, and an extension hole 220h2 constituting a part of a second upstream extension flow path P2b to be described later. ) Can be included. The lower end of the extension hole 220h1 may face the first classification guide point Qd1. The lower end of the extension hole 220h2 may face the second classification guide point Qd2.

The at least one extension hole 220h includes an extension hole 220h3 constituting a part of a first downstream extension flow path P1d to be described later, and an extension hole 220h4 constituting a part of a second downstream extension flow path P2d to be described later. ) Can be included. The lower end of the extension hole 220h3 may face the first confluence guide point Qu1. The lower end of the extension hole 220h4 may face the second confluence guide point Qu2.

The second part 220 may have a cylindrical shape extending vertically as a whole. The sealing plate 310 may be disposed under the second part 220. A guide groove 229 into which the guide protrusion 313 of the sealing plate 310 is inserted may be formed in the second part 220.

The sealing plate 320 may contact the upper surface of the third part 230. The second part 220 may be coupled to the lower side of the third part 230. The fourth part 240 may be coupled to the upper side of the third part 230. The chemical liquid transfer pipe 800 may be disposed on the lower side of the third part 230. The third part 230 may support the upper end of the chemical liquid transfer pipe 800. The third part 230 may support the other end of the first chemical liquid transfer pipe 810. The third part 230 may support the other end of the second chemical liquid transfer pipe 820.

At least one flow path groove 232 may be formed in the third part 230. The at least one channel groove 232 may include at least one of an inflow channel groove 232a, an outflow channel groove 232b, and a connection channel groove 232c. The inflow passage groove 232a may be covered by the sealing plate 320 to form a part of the reservoir inflow passage P2ci. The outflow channel groove 232b may be covered by the sealing plate 320 to form a part of the reservoir outflow channel P2co. The connection channel groove 232c may be covered by the sealing plate 320 to form a first connection guide channel P1c.

The inflow passage groove 232a may extend in a direction perpendicular to the through direction (up-down direction) of the connection hole 320h1 of the sealing plate 320. The lower end of the connection hole 320h1 faces the inflow passage groove 232a.

The outflow channel groove 232b may extend in a direction perpendicular to the penetrating direction (up-down direction) of the connection hole 320h2 of the sealing plate 320. The lower end of the connection hole 320h2 faces the outlet flow path groove 232b.

The lower side of the sealing plate 320 may cover the connection channel groove 232c. The sealing plate 320 covers the entire connection channel groove 232c so that the connection channel groove 232c does not have a channel connected to the upper side.

The inflow channel groove 232a and the outflow channel groove 232b may be disposed to be horizontally spaced apart from each other. The inlet passage groove 232a, the outlet passage groove 232b, and the connection passage groove 232c may be disposed to be horizontally spaced apart from each other.

The third part 230 may include a flow path guide rib 231 protruding upward to contact the sealing plate 320. The flow guide rib 231 may include an inflow flow guide 231a that partitions the inflow flow path groove 232a. The flow path guide rib 231 may include a flow path guide 231b that partitions the flow path groove 232b. The flow guide rib 231 may include a connection flow guide 231c that partitions the connection flow path groove 232c.

At least one extension hole 230h constituting a part of the chemical liquid flow path is formed in the third part 230. The extension hole 230h may extend in the vertical direction. The upper end of the extension hole 230h is located in the flow path groove 232.

The at least one extension hole 230h is an extension hole 230h1 constituting a part of a first upstream extension flow path P1b to be described later, and an extension hole 230h2 constituting a part of a second upstream extension flow path P2b to be described later. ) Can be included. The upper end of the extension hole 230h1 and the upper end of the extension hole 230h2 may be located in the connection channel groove 232c.

The at least one extension hole 230h is an extension hole 230h3 constituting a part of a first downstream extension flow path P1d to be described later, and an extension hole 230h4 constituting a part of a second downstream extension flow path P2d to be described later. ) Can be included. The upper end of the extension hole 230h3 may be located in the inflow passage groove 232a. The upper end of the extension hole 230h4 may be located in the outflow channel groove 232b.

The first upstream extension flow path P1b includes an extension hole 220h1 of the second part 220, a capillary flow path 810p of the first chemical liquid transfer pipe 810, and an extension hole 230h1 of the third part 230. It can be formed by being connected in sequence. The second upstream extension flow path P2b includes an extension hole 220h2 of the second part 220, a capillary flow path 820p of the second chemical liquid transfer pipe 820, and an extension hole 230h2 of the third part 230. It can be formed by being connected in sequence. The first downstream extension flow path P1d may be formed by sequentially connecting the extension hole 230h3 of the third part 230 and the extension hole 220h3 of the second part 220. The first downstream extension flow path P1d may be formed by sequentially connecting the extension hole 230h4 of the third part 230 and the extension hole 220h4 of the second part 220.

A guide groove 237 is formed in the third part 230 to guide a coupling direction for assembling the fourth part 240. The guide groove 237 may be formed by being recessed in a downward direction in a portion forming the circumferential surface of the third part 230. The coupling guide 244 protruding laterally from the fourth part 240 may be engaged with the guide groove 237.

At least one of the second part 220 and the third part 230 may include transfer

pipe seating portions

238a and 238b on which the chemical liquid transfer pipe 800 is seated. The transfer

pipe seating portions

238a and 238b include a first transfer pipe seating portion 238a in which the first chemical liquid transfer pipe 810 is seated, and a second transfer pipe seating portion in which the second chemical liquid transfer pipe 820 is seated ( 238b). The transfer

pipe seating portions

238a and 238b may form a hole into which the chemical liquid transfer pipe 800 is inserted, and the hole into which the chemical liquid transfer pipe 800 is inserted may communicate with the above-described extension hole. In this embodiment, the transfer

pipe seating portions

238a and 238b are formed in the third part 230, the extension hole 230h1 communicates with the hole of the first transfer pipe seating portion 238a, and the second transfer pipe seating The extension hole 230h2 communicates with the hole of the part 238b.

At least one of the second part 220 and the third part 230 may include flow

path forming portions

239a and 239b extending the above-described extension hole in the vertical direction. The flow

path forming portions

239a and 239b may extend parallel to the transfer pipe seating portion 238a. In this embodiment, the flow

path forming portions

239a and 239b are formed in the third part 230, the first flow path forming portion 239a extends the extension hole 230h1 in the vertical direction, and the second flow path forming portion ( 239b extends the extension hole 230h4 in the vertical direction.

The third part 230 may have a cylindrical shape extending vertically as a whole. The lower side of the third part 230 may be inserted and coupled to the upper side of the second part 220. The sealer 900 may be sandwiched and disposed between the second part 220 and the third part 230. The second part 220 and the third part 230 may be coupled to each other so that the chemical liquid transfer pipe 800 is disposed therein.

The reservoir support part (fourth part) 240 may form a part of the second connection guide flow path P2c to be described later. A connection hole 240h may be formed in the reservoir support part 240. The connection hole 240h may vertically penetrate the reservoir support part 240. The connection hole 240h may be formed in the center of the reservoir support part 240.

The connection hole 240h may include an inlet connection hole 240h1 and an outlet connection hole 240h2. The inflow connection hole 240h1 and the outflow connection hole 240h2 form a part of the second flow path P2.

The reservoir support part 240 may be formed in a plate shape. The reservoir support part 240 may be generally formed in a circular shape when viewed from the top. The reservoir support part 240 may be inserted and coupled to the upper side of the third part 230. The reservoir support part 240 may include a coupling guide 244 protruding outwardly perpendicular to the vertical direction from the edge. A plurality of coupling guides 244 spaced apart from each other may be provided along the edge of the reservoir support part 240.

The sealing plate 300 is sandwiched between two adjacent parts of the plurality of

parts

210, 220, 230, and 240 to contact the two adjacent parts. The chemical flow path passes through the two adjacent parts and the sealing plate 300 sandwiched between the two adjacent parts. Connection holes 310h and 320h connected to the

flow path grooves

222 and 232 and constituting a part of the chemical liquid flow path are formed in the sealing plate 300. The connection holes 310h and 320h may vertically penetrate the sealing plate 300.

Any one 220, 230 of two parts (first and

second parts

210 and 220 or third and fourth parts 230 and 240) adjacent to each other with the sealing plate 300 interposed therebetween is a flow path groove (222, 232) and the other (210, 240) may be formed with a part of the chemical liquid flow path. A part of the chemical liquid flow path of the

other part

210 and 240 of the two parts adjacent to each other with the sealing plate 300 interposed therebetween, the connection holes 310h and 320h, and the

flow path grooves

222 and 232 It can be connected sequentially.

The sealing plate 300 may be formed in a plate shape. The sealing plate 300 may be formed in a circular shape when viewed from the top. The material of the sealing plate 300 may be a material that is more elastically deformed than the material of two parts adjacent to each other with the sealing plate 300 interposed therebetween. In this embodiment, the material of the two parts adjacent to each other includes synthetic resin, and the material of the sealing plate 300 includes rubber or silicone. The sealing plate 300 is elastically deformed by being pressed against the two adjacent parts, thereby stably preventing leakage of the chemical inside the flow path grooves 222 and 223. In this embodiment, the sealing plate 300 is depressed by being pressed against the

flow guide ribs

221 and 231 and may be elastically deformed.

The at least one sealing plate 300 may include a lower sealing plate 310 that is sandwiched between the first part 210 and the second part 220 and contacts the first part 210 and the second part 220. have. The lower sealing plate 310 includes a cover surface 311 contacting one 220 having a flow path groove 222 among two

parts

210 and 220 adjacent to each other, and an auxiliary cover contacting the other 220 It may include a face 312. The cover surface 311 may form an upper side, and the auxiliary cover surface 312 may form a lower side.

The lower sealing plate 310 may be formed with an upstream connection hole 310h1 connected to the flow path groove 222a and a downstream connection hole 310h2 connected to the confluence flow path groove 222b. The inflow passage hole 210h1 and the upstream connection hole 310h1 of the first part 210 may be sequentially connected to form an inflow passage P1i (see FIG. 10 ). The downstream connection hole 310h2 and the outflow passage hole 210h2 of the first part 210 may be sequentially connected to form an outflow passage P1o (see FIG. 10 ).

The lower sealing plate 310 may include at least one protrusion 314 protruding from the auxiliary cover surface 312 toward the first part 210. The lower end of the connection hole 310h may be located at the lower end of the protrusion 314. The at least one protrusion 314 may include an upstream protrusion 314a corresponding to the upstream connection hole 310h1 and a downstream protrusion 314b corresponding to the downstream connection hole 310h2.

The lower sealing plate 310 may include a guide protrusion 313 protruding from the edge in an outward direction perpendicular to the vertical direction. The guide protrusion 313 may be inserted into the guide groove 229 of the body 200.

The at least one sealing plate 300 is inserted into the third part (connection part) 230 and the fourth part (reservoir support part) 240 to contact the second part 220 and the fourth part 240. It may include a sealing plate (320). The upper sealing plate 320 includes a cover surface 321 contacting one 230 having a flow path groove 232 among two

parts

230 and 240 adjacent to each other, and an auxiliary cover contacting the other 220 It may include a face 322. The cover surface 321 may form a lower side, and the auxiliary cover surface 312 may form an upper side.

The upper sealing plate 320 may be formed with a first connection hole 320h1 that forms a part of the second flow path P2 and is connected to the inflow connection hole 240h1 of the reservoir support part 240. The upper sealing plate 320 may be formed with a second connection hole 320h2 that forms a part of the second flow path P2 and is connected to the outflow connection hole 240h2 of the reservoir support part 240. The lower end of the first connection hole 320h1 faces the inflow passage groove 232a of the third part 230, and the lower end of the second connection hole 320h2 is the outlet passage groove 232b of the third part 230 You can face it.

The reservoir push member 500 is configured to pressurize the reservoir 400. The reservoir push member 500 may be disposed above the reservoir 400. The reservoir push member 500 may be configured to move downward and press the reservoir 400. When the reservoir push member 500 moves downward, the reservoir 400 is pressed between the reservoir push member 500 and the reservoir support part 240, so that the chemical liquid in the inner space 400s of the reservoir 400 is removed from the reservoir ( 400) It can be leaked to the outside. The reservoir push member 500 may include an upper plate 510 and a reservoir pressing part 520.

The upper plate 510 may be coupled to the upper side of the reservoir pressing unit 520. The upper plate 510 may be generally formed in a circular shape when viewed from the top. The upper plate 510 may include an engaging surface 511 that is coupled to an upper surface of the reservoir pressing unit 520 and a pressing surface 512 that is pressed by the button member 700. The upper plate 510 may include a side guide 513 extending along the circumference of the coupling surface 511 and contacting the edge of the reservoir pressing portion 520. The upper plate 510 may include a protrusion 515 protruding outwardly perpendicular to the vertical direction from the edge.

The reservoir pressing unit 520 includes a lower side surface 521 for pressing the reservoir 400. The reservoir pressing part 520 may be formed of a material that is more flexible than the upper plate 510. In this embodiment, the material of the upper plate 510 may include synthetic resin, and the material of the reservoir pressing portion 520 may include rubber or silicone.

The lower surface 521 of the reservoir pressing unit 520 may include a surface concave upward. The concave surface of the lower side 521 may be formed to correspond to the convex surface of the upper side 241 of the reservoir support part 240. Depending on the embodiment, the concave surface may be formed with a different curvature than the convex surface, or may include a chemical solution guide portion 521a forming a groove recessed upward in the concave surface. A detailed description of this will be described later.

The button member 700 may be configured to be spaced upward from the reservoir push member 500. The button member 700 may be configured to be able to press the reservoir push member 500 downward. When the user presses the operation unit 710 of the button member 700 downward, the button member 700 may move downward and contact the upper side of the reservoir push member 500. When the button member 700 moves further downward while in contact with the upper side of the reservoir push member 500, the button member 700 and the reservoir push member 500 are integrally moved downward, and the reservoir push member ( 500) may press the reservoir 400 downward.

The button member 700 may be coupled to the body 200 so as to be movable in the vertical direction along the outer surface of the body 200. The button member 700 may include a sliding part 730 surrounding the circumferential surface of the body 200. The sliding part 730 may be formed in a cylindrical shape as a whole. The button member 700 may include an upper surface portion 720 extending horizontally from an upper portion of the sliding portion 730. The button member 700 may include an operation part 710 protruding upward from the upper surface part 720.

The elastic member 1000 may be disposed between the reservoir push member 500 and the button member 700. The elastic member 1000 may be configured to elastically deform when the reservoir push member 500 and the button member 700 are close to each other. When the user presses the button member 700 downward and then releases it, the button member 700 may move upwardly from the reservoir push member 500 by the restoring force of the elastic member 1000. In this case, the reservoir push member 500 and the reservoir support part 240 may be kept close to each other.

The elastic member 1000 may use one of various known methods for exerting an elastic force. For example, the elastic member 1000 may include various types of members such as a compression spring, a tension spring, a torque spring, and an air spring, or may include a member configured to be elastically compressed with a material such as rubber.

The chemical liquid supply control device 80 may include at least one chemical liquid transfer pipe 800 having

capillary flow paths

810p and 820p constituting a part of the chemical liquid flow path. The chemical liquid transfer pipe 800 is coupled to the body 200. The chemical liquid transfer pipe 800 may have a function of limiting the flow rate per hour of the chemical liquid. For example, the chemical liquid transfer pipe 800 may include a capillary tube. As another example, the chemical liquid transfer pipe 800 may include a polymer microtube. In addition, the chemical liquid transfer pipe 800 may be formed of various shapes and materials having a capillary flow path. For example, the capillary flow path 820p has a diameter of about 0.04 to 0.08 mm, and thus may serve to limit the flow rate of the chemical solution per hour.

The at least one chemical liquid transfer pipe 800 may include a first chemical liquid transfer pipe 810 forming a capillary flow path 810p constituting a part of the first flow path P1. The first chemical liquid transfer pipe 810 may be disposed in at least one of the plurality of

parts

210, 220, 230, and 240. In this embodiment, the capillary flow path 810p constitutes a part of the first extended upstream flow path P1b, but in another embodiment not shown, the capillary flow path 810p may constitute a part of the first extended downstream flow path P1d. May be.

The at least one chemical liquid transfer pipe 800 may include a second chemical liquid transfer pipe 820 forming a capillary flow path 820p constituting a part of the second flow path P2. The second chemical liquid transfer pipe 820 may be disposed in at least one of the plurality of

parts

210, 220, 230, and 240. In this embodiment, the capillary flow path 820p constitutes a part of the second upstream extension flow path P2b, but in another embodiment not shown, the capillary flow path 820p may constitute a part of the second downstream extension flow path P2d. May be.

At least a portion of the chemical liquid transfer pipe 800 may be in contact with the inner surface of the body 200. The chemical liquid transfer pipe 800 may be disposed while passing through the transfer pipe sealer 910.

The sealer 900 may be formed in a ring shape. The sealer 900 may be formed of an elastic material such as rubber. In this embodiment, the sealer 900 is sandwiched between the second part 220 and the second part 220.

The at least one sealer 900 may include at least one transfer pipe sealer 910 interposed between the outer surface of the chemical liquid transfer pipe 800 and the inner surface of the housing 81. The transfer pipe sealer 910 may block the flow of the chemical liquid between the outer surface of the chemical liquid transfer pipe 800 and the inner surface of the body 200. The transfer pipe sealer 910 may surround the chemical liquid transfer pipe 800. The at least one transfer pipe sealer 910 may include a first transfer pipe sealer 911 sandwiched between an outer surface of the first chemical liquid transfer pipe 810 and an inner surface of the body 200. The at least one transfer pipe sealer 910 may include a second transfer pipe sealer 912 sandwiched between an outer surface of the second chemical solution transfer pipe 820 and an inner surface of the body 200.

The at least one sealer 900 includes at least one connection sealer 930 that is sandwiched between two

parts

220 and 230 coupled to each other, and prevents leakage of a chemical solution between the two

parts

220 and 230. I can. The connection sealer 930 is disposed in a portion of the chemical liquid flow path where the chemical liquid transfer pipe 800 is not disposed. The at least one connection sealer 930 may include a first connection sealer 931 disposed in the first extending downstream flow path P1d formed by two

parts

220 and 230 coupled to each other. The at least one connection sealer 930 may include a second connection sealer 932 disposed in the second downstream extension flow path P2d formed by the two

parts

220 and 230 coupled to each other.

The chemical liquid supply control device 80 may include at least one hydrophobic air passing filter 1200. The air passing filter 1200 blocks the passage of the chemical solution but allows air to pass therethrough. The air passing filter 1200 may be disposed on the filter support part 210. The filter support part 210 may form an air passage R1 branched from the inflow passage P1i (see FIG. 11 ). The filter support part 210 may form an air passage R2 branched from the outflow passage P1o (see FIG. 12 ). Arrow A1 in FIG. 11 shows a direction in which air passes along the passage R1, and arrow A2 in FIG. 12 shows a direction in which air passes along the passage R2.

The at least one air passing filter 1200 may include an upstream air passing filter 1200A positioned upstream of the split point Qd on the first flow path P1. The upstream air passing filter 1200A may be configured to discharge air in the first flow path P1 to the outside. The upstream air passing filter 1200A may include a first air passing filter 1210 disposed at a boundary between the air passage R1 and the inflow passage P1i. The upstream air passing filter 1200A may further include a second air passing filter 1220 disposed on the air passage R1.

The at least one air passing filter 1200 may include a downstream air passing filter 1200B positioned on the downstream side of the confluence point Q on the first flow path P1. The downstream air passing filter 1200B may be configured to discharge air in the first flow path P1 to the outside. The downstream air passing filter 1200B may include a first air passing filter 1210 disposed at a boundary between the air passage R2 and the outflow passage P1o. The upstream air passing filter 1200A may further include a second air passing filter 1220 disposed on the air passage R2.

The air passing filter 1200 may include a first air passing filter 1210 and a second air passing filter 1220 that are sequentially disposed on the air passages R1 and R2. The second air passing filter 1220 is configured to pass air that has passed through the first air passing filter 1210. The second air passing filter 1220 may perform a function of preventing the internal chemical liquid from flowing out even when the pores or adhesive portions of the first air passing filter 1210 are damaged.

The second air passing filter 1220 may be formed by processing the same material as the first air passing filter 1210 or a porous plastic material. For example, the second air passing filter 1220 may be formed such that a hydrophobic porous plastic resin material fills a partial cross-sectional area of the air passages R1 and R2. For example, the material of the second air pass filter 1220 can be obtained from Porex Corporation of Fairburn, GA 30213 (website: www.porex.com). . A product named Porex Hydrophobic Vents of the above can be used, which is made of a material of polyethyle polytetrafluoroethylene.

The chemical liquid supply control device 80 may include at least one hydrophilic boundary filter 1300 disposed on the chemical liquid flow path. The boundary filter 1300 may be disposed across the chemical liquid flow path. The at least one boundary filter 1300 may include an upstream boundary filter 1300A disposed between the upstream air passing filter 1200A and the split point Qd on the inlet flow path P1i. The at least one boundary filter 1300 may include a downstream boundary filter 1300B disposed between the outlet Qo and the downstream air passing filter 1200B on the outlet flow path P1o.

The boundary filter 1300 is configured to act as a pressure boundary surface between a flow path portion on an upstream side and a flow path portion on a downstream side based on the boundary filter 1300 when the chemical solution is wetted. By the boundary filter 1300, the upstream flow path portion and the downstream flow path portion may have different internal pressures. For example, the boundary filter 1300 may be configured in at least one of a mesh structure and a fiber structure. The boundary filter 1300 may additionally have a function of filtering impurities.

9 is an elevational view of the reservoir assembly A400 of FIG. 7. Referring to FIG. 9, the reservoir assembly A400 is a component including an assembly of the reservoir 400 and the reservoir support part 240. The chemical liquid supply control device 80 may include a reservoir assembly A400.

The reservoir 400 forms an inner space 400s for storing a chemical solution. In the chemical liquid supply control device 80, the inner space 400s of the reservoir 400 is located on the chemical liquid flow path. In the chemical liquid supply control device 80, the inner space 400s of the reservoir 400 may be located on the second flow path P2.

The reservoir 400 is configured such that the volume of the inner space 400s can be changed. As the volume of the internal space 400s of the reservoir 400 increases, a chemical solution may be stored, and as the volume of the internal space 400s of the reservoir 400 decreases, the stored chemical liquid may be discharged.

The reservoir 400 may include an upper first film 410 and a lower second film 420 coupled to each other. For example, each of the first film 410 and the second film 420 may be a PVC (polyvinyl chloride) film. Each edge portion of the first film 410 and the second film 420 may be vertically coupled to form an inner space 400s between the first film 410 and the second film 420. .

At least one hole 420h connected to the inner space 400s may be formed in a portion 421 of the outer surface of the reservoir 400. The at least one hole 420h may include an inlet hole 420h1 and an outlet hole 420h2. The inlet hole 420h1 may form a part of the reservoir inlet passage P2ci, and the outlet hole 420h2 may form a part of the reservoir outlet passage P2co.

The portion 421 of the reservoir 400 may be fixed to the reservoir support part 240. The part 421 may be located in the center of the reservoir 400. The one part 421 may be located in the center of the lower side of the reservoir 400. The part 421 may be located on the second film 420.

The reservoir support part 240 may be disposed under the reservoir 400. The reservoir 400 may be fixed to the upper side 241 of the reservoir support part 240. The upper side surface 241 of the reservoir support part 240 may include an upwardly convex surface.

The one portion 421 of the reservoir 400 may be fixed to a portion 241a of the upper side of the reservoir support part 240. The one part 241a may be located in the center of the reservoir support part 240. The one part 421 of the reservoir 400 is located at the center of the lower side of the reservoir 400, and the convex surface of the reservoir support part 240 is formed to protrude from a position corresponding to the center of the reservoir 400 Can be.

The convex surface of the reservoir support part 240 may have an upwardly convex curvature. The reservoir support part 240 may be configured such that the convex surface has an uppermost end in the central portion. The convex surface of the reservoir support part 240 may have an uppermost end in the portion 241a of the reservoir support part 240.

An inlet connection hole 240h1 may be formed in the reservoir support part 240 to form a part of the chemical liquid flow path and connected to the inlet hole 420h1 of the reservoir 400. An outflow connection hole 240h2 may be formed in the reservoir support part 240 to form a part of the chemical liquid flow path and are connected to the outflow hole 420h2.

The inflow connection hole 240h1 may form a part of the reservoir inflow passage P2ci. The inlet connection hole 240h1 may be connected to the inlet hole 420h1 of the reservoir 400. The inlet hole 420h1 and the inlet connection hole 240h1 may be connected vertically. The inflow connection hole 240h1 may be connected to the first connection hole 320h1 of the sealing plate 320. The inflow connection hole 240h1 and the first connection hole 320h1 may be connected vertically.

The outflow connection hole 240h2 may form a part of the reservoir outflow passage P2co. The outflow connection hole 240h2 may be connected to the outflow hole 420h2 of the reservoir 400. The outflow hole 420h2 and the outflow connection hole 240h2 may be connected vertically. The outflow connection hole 240h2 may be connected to the second connection hole 320h2 of the sealing plate 320. The outflow connection hole 240h2 and the second connection hole 320h2 may be connected vertically.

10 is a perspective view showing a cross-section of the chemical solution supply control device 80 taken along the line S1-S1' of FIG. 8. 11 is a cross-sectional view of the chemical solution supply control device 80 taken along the line S2-S2' of FIG. 8. 12 is a cross-sectional view of the chemical solution supply control device 80 taken along line S3-S3' of FIG. 8. 13 is a cross-sectional view of the chemical solution supply control device 80 taken along line S4-S4' of FIG. 8.

10 to 13, the chemical liquid flow path may include a first flow path P1 for guiding the chemical liquid to flow from the inlet Qi to the outlet Qo. The chemical liquid flow path guides the chemical liquid to be classified at the sorting point of the first flow path P1, and guides the classified chemical liquid to merge at the confluence point Q located downstream of the sorting point Qd of the first flow path P1. It may include a second flow path (P2). The second flow path P2 may be configured to be open and close.

The first flow path P1 is an inflow flow path P1i, a first sorting guide flow path P1a, a first upstream extension flow path P1b, a first connection guide flow path P1c, a first downstream extension flow path P1d, and a first flow path P1. 1 The confluence guide flow path P1e and the outflow flow path P1o may be sequentially connected to each other to be formed. The first capillary flow path 810p may form a part of the first upstream extending flow path P1b.

The second flow path P2 includes a second classification guide flow path P2a, a second upstream extension flow path P2b, a reservoir inlet flow path P2ci, an internal space 400s of the reservoir 400, a reservoir outlet flow path P2co, The second downstream extension flow path P2d and the second confluence guide flow path P2e may be sequentially connected to each other to be formed. The second capillary flow path 820p may form a part of the second upstream extending flow path P2b. The insertion space 250s, which will be described later, may form a part of the second extending downstream flow path P2d.

10 and 11, the inflow passage P1i is a passage section from the inlet Qi to the split point Qd. The chemical liquid flows along the inflow flow path P1i (refer to the arrow Hi), is classified at the fractionation point Qd, and flows along the fractionation flow passages P1a and P2a. The first classification guide flow path P1a is a flow path section from the classification point Qd to the first classification guide point Qd1. The chemical liquid flows along the first sorting guide flow path P1a, and then flows along the first upstream extension flow path P1b (refer to arrow H11). Further, the second classification guide flow path P2a is a flow path section from the classification point Qd to the second classification guide point Qd2. The chemical liquid flows along the second sorting guide flow path P2a and then flows along the second upstream extension flow path P2b (refer to arrow H21).

Referring to FIGS. 11 and 12, a first connection guide flow path P1c is positioned between the split point Qd and the confluence point Q on the first flow path P1. The first connection guide flow path P1c may connect a downstream end of the first upstream extension flow path P1b and an upstream end of the first downstream extension flow path P1d. The chemical liquid sequentially flows along the first upstream extension flow path P1b and the first connection guide flow path P1c, and then flows along the first downstream extension flow path P1d (arrow H13).

12 and 13, a second connection guide flow path P2c is positioned between the split point Qd and the confluence point Q on the second flow path P2. The second connection guide flow path P2c may connect the downstream end of the second upstream extension flow path P2b and the downstream end of the second downstream extension flow path P2d. The chemical liquid sequentially flows along the second upstream extension flow path P2b and the second connection guide flow path P2c, and then flows along the second downstream extension flow path P2d (arrow H24).

Referring to FIG. 13, the second connection guide flow path P2c includes a reservoir inflow flow path P2ci located between the classification point Qd and the inner space 400s of the reservoir 400 on the second flow path P2. Can include. The reservoir inlet passage P2ci includes an inlet passage groove 232a of the third part 230, a first connection hole 320h1 of the sealing plate 320, an inlet connection hole 240h1 of the fourth part 240, and a reservoir. The inflow holes 420h1 of 400 may be sequentially connected to be formed.

Referring to FIG. 13, the second connection guide flow path P2c includes a reservoir outlet flow path P2co positioned between the confluence point Q and the inner space 400s of the reservoir 400 on the second flow path P2. can do. The reservoir outlet flow path P2co includes an outlet hole 420h2 of the reservoir 400, an outlet connection hole 240h2 of the fourth part 240, a second connection hole 320h2 of the sealing plate 320, and a third part ( The outlet flow path grooves 420h2 of 230 may be sequentially connected to each other to be formed. The chemical liquid in the inner space 400s of the reservoir 400 flows along the reservoir outlet flow path P2co (refer to arrow H23), and then flows along the second downstream extension flow path P2d (refer to arrow H24).

With reference to FIGS. 10 and 12, the chemical liquids classified by the fractionation flow paths P1a and P2a merge through the confluence flow paths P1e and P2e, and flow along the outflow flow path P1o (refer to arrow Ho). . The first confluence guide flow path P1e is a flow path section from the first confluence guide point Qu1 to the confluence point Qu. The chemical liquid flows along the first downstream extension flow path P1d (refer to arrow H13), and then flows along the first confluence guide flow path P1e. In addition, the second confluence guide flow path P2e is a flow path section from the second confluence guide point Qu2 to the confluence point Qu. The chemical liquid flows along the second downstream extension flow path P2d (refer to arrow H24), and then flows along the second confluence guide flow path P2e. The outflow passage P1o is a passage section from the confluence point Q to the outflow port Qo. The chemical liquid flows along the confluence flow paths P1e and P2e, and then flows along the outflow flow path P1o (refer to arrow Ho).

14 is an exploded perspective view of the lock assembly 600 and the body 200 of FIG. 5. 15 is a perspective view showing a state in which the lock assembly 600 of FIG. 14 is coupled. 16 is a perspective view of the button member 700 of FIG. 5 in a partially cut-away state. 17A and 17B are cross-sectional views of the chemical solution supply control device 80 taken along the line S5-S5' of FIG. 8, and FIG. 17A is a view showing a locked state, and FIG. 17B is a view showing an unlocked state.

In describing the lock assembly 600, a central axis X, which is an imaginary axis, may be defined. In this embodiment, the central axis X extends in a direction perpendicular to the vertical direction, but the present disclosure is not limited thereto. In the present disclosure, one of the extension directions of the central axis X may be defined as “first direction (D1)”, and the opposite direction of the first direction (D1) may be defined as “second direction (D2)”. have. As used in the present disclosure, "radius outer direction (XO)" refers to a direction away from the central axis (X), and "radius inner direction (XI)" refers to a direction closer to the central axis (X).

14 to 17B, the body 200 may form an insertion space 250s that is depressed in the first direction D1. The insertion space 250s may have an opening 250s1 in the second direction D2.

The body 200 may include a space forming part 250 forming an insertion space 250s. In this embodiment, the space forming part 250 is provided in the third part 230. The space forming part 250 may include

surfaces

251 and 252 defining the insertion space 250s. The

surfaces

251 and 252 may include a circumferential surface 251 defining a circumference about the central axis X of the insertion space 250s. The

surfaces

251 and 252 may include an end surface 252 defining an end of the insertion space 250s in the first direction D1. The end surface 252 may extend from the end of the circumferential surface 251 in the first direction D1.

The space forming part 250 may form a locking protrusion 255 facing the second direction D2. The stopper 613 of the lock valve 610 may be in contact with the locking projection 255. The locking projection 255 may extend from an end of the circumferential surface 251 in the second direction D2.

A first hole 250a and a second hole 250b may be positioned on the

surfaces

251 and 252 defining the insertion space 250s of the body 200. The first hole 250a and the first hole 250a may be located on the circumferential surface 251 of the

surfaces

251 and 252. The first hole 250a and the second hole 250b may be formed to face each other with the lock valve 610 interposed therebetween.

The first hole 250a, the insertion space 250s, and the second hole 250b may be sequentially connected to form a part of the chemical liquid flow path. The first hole 250a, the insertion space 250s, and the second hole 250b may be sequentially connected to form a part of the second flow path P2. In this embodiment, the first hole 250a, the insertion space 250s, and the second hole 250b are sequentially connected to form a second downstream extension flow path P2d. The chemical liquid may flow through the gap between the outer surface of the lock valve 610 and the

surfaces

251 and 252 of the space forming part 250.

The lock assembly 600 includes a lock valve 610 inserted into the insertion space 250s. The lock valve 610 may close the opening 250s1 of the insertion space 250s. The lock valve 610 may form a valve groove 610h recessed in the first direction D1. The valve groove 610h may be formed by being recessed from the surface of the lock valve 610 in the second direction D2 in the first direction. The valve groove 610h may be formed by being recessed along the central axis X.

The lock assembly 600 includes a lock pin 630 inserted into the valve groove 610h. The lock pin 630 may be configured to elastically deform the lock valve 610. The upper part of the lock pin 630 moved in the first direction D1 may be defined as a'locked state', and the state in which the lock pin 630 moved in the second direction D2 is defined as a'released state' can do. In the locked state, the lock valve 610 blocks at least one of the first hole 250a and the second hole 250b (see FIG. 17A). In this embodiment, in the locked state, the lock valve 610 blocks both the first hole 250a and the second hole 250b. In the released state, the lock valve 610 opens the first hole 250a and the second hole 250b (see FIG. 17B).

The lock valve 610 may be formed of a material that is more flexible than the material of the lock pin 630. The lock valve 610 may be formed of a material that is more flexible than the material of the space forming part 250. In this embodiment, the material of the lock pin 630 and the material of the space forming part 250 may include synthetic resin, and the material of the lock valve 610 may include rubber or silicone. The lock valve 610 may be configured to be elastically deformed or elastically restored according to the movement of the lock pin 630 in the first direction D1 or the second direction D2.

The lock valve 610 may include an insertion portion 611 inserted into the insertion space 250s and forming a valve groove 610h. A valve groove 610h may be formed in the center of the insertion part 611. The insertion part 611 may be formed in a cylindrical shape. The circumferential surface of the insertion part 611 facing the radially outward direction XO may face the circumferential surface 251 of the space forming part 250. The blocking surface 617 facing the first direction D1 of the insertion part 611 may face the end surface 252 of the space forming part 250.

The lock valve 610 may include a distal end 617a contacting the

surfaces

251 and 252 of the body 200 in the first direction D1. The distal portion 617a may contact the distal surface 252 of the space forming portion 250. The distal end 617a may form an end of the lock valve 610 in the first direction D1. The distal end 617a may be formed to protrude from the shielding surface 617 in the first direction D1.

The lock valve 610 may include a stopper 613 extending from the insertion part 611 in a radially outward direction XO. The stopper 613 may extend in a circumferential direction about the central axis X. The stopper 613 may be seated on the body 200. The stopper 613 is seated on the body 200 to close the opening 250s1 of the insertion space 250s. A surface of the stopper 613 facing the first direction D1 may contact the locking protrusion 255 of the space forming part 250.

The lock valve 610 may include a pin seating portion 615 disposed in the valve groove 610h. The pin seating portion 615 may have a surface in a second direction D2 that can contact the surface of the lock pin 630 in the first direction D1. In the locked state, the locking protrusion 635 of the lock pin 630 may contact the surface of the pin seat 615 in the second direction D2. When changing from the unlocked state to the locked state, the locking pin 630 moves in the first direction D1 while the locking protrusion 635 and the pin seating part 615 are in contact with each other, and the lock valve 610 Can be elastically deformed. When changing from the locked state to the unlocked state, the pin seating portion 615 may push the locking protrusion 635 in the second direction D2 while the lock valve 610 is elastically restored.

The valve groove 610h may include a first recessed portion 610h1 and a second recessed portion 610h2 that are sequentially disposed along the first direction D1. The first recessed portion 610h1 and the second recessed portion 610h2 may be connected to each other. The first recessed portion 610h1 may be positioned in the second direction D2 with respect to the pin seating portion 615. The second recessed portion 610h2 may be positioned in the first direction D1 with respect to the pin seating portion 615. The second recessed portion 610h2 may be formed narrower in the radially inward direction XI than the first recessed portion 610h1. The circumferential length about the central axis X of the second depression 610h2 is shorter than the circumference length about the central axis X of the first depression 610h1.

The lock pin 630 may include a push part 631 inserted into the valve groove 610h. The push part 631 may be inserted into the second recessed part 610h2. The push part 631 may protrude from the head part 633 in the first direction.

On a cross-section perpendicular to the first direction D1, the push portion 631 may have a rectangular cross-section. The cross section of the push part 631 perpendicular to the first direction D1 is a direction in which the length l1 in both directions in which the first hole 250a and the second hole 250b are disposed is perpendicular to the both directions. It may be formed longer than the length (l2). Through this, in the locked state, the lock valve 610 is more stretched and elastically deformed in both directions in which the first hole 250a and the second hole 250b are arranged, so that the first hole 250a and the second hole (250b) can be well blocked. In this embodiment, the length l1 is a length in the vertical direction.

The lock pin 630 may include a head portion 633 disposed in the second direction D2 of the push portion 631. The head portion 633 may form an end of the lock pin 630 in the second direction D2. The head portion 633 may be configured to be able to contact the button member 700. In the locked state, the head portion 633 may contact the contact surface 731a of the button member 700 to be pressed in the first direction D1. In the released state, the head portion 633 may be inserted into the head insertion portion 730b of the button member 700.

An inclined surface 633a extending in a direction between the first direction D1 and the lower direction may be formed on the surface of the head portion 633 in the second direction D2. The button member 700 may move in the vertical direction. When the button member 700 moves upward, the head portion 633 may contact the contact surface 731a of the button member 700.

The lock pin 630 may include a locking protrusion 635 protruding in the radially outward direction XO. A pair of locking protrusions 635 protruding in opposite directions may be provided. The locking protrusion 635 may be disposed between the push part 631 and the head part 633. The surface of the locking protrusion 635 in the first direction D1 may contact the pin seat 615 of the lock valve 610. The surface of the locking protrusion 635 in the second direction D2 may contact the surface of the locking portion 655 of the lock cap 650 in the first direction D1.

In the locked state, the locking protrusion 635 is in contact with the pin mounting portion 615, and in the unlocked state, the locking protrusion 635 may be spaced apart from the pin mounting portion 615 in the second direction D2. In the unlocked state, the locking protrusion 635 is in contact with the locking part 655, and in the locked state, the locking protrusion 635 may be spaced apart from the locking part 655 in a first direction D1.

The lock assembly 600 may include a lock cap 650 seated on the body 200 by pressing the stopper 613 of the lock valve 610. The lock cap 650 may be fixed to the body 200. The material of the lock cap 650 may include synthetic resin.

The lock cap 650 may include a valve fixing part 651 that presses the stopper 613 of the lock valve 610 in the first direction D1. The valve fixing part 651 may extend in a circumferential direction about the central axis X.

The lock cap 650 may include a seating portion 652 that is seated on an edge portion of the opening 250s1 of the body 200. The surface of the seating portion 652 in the first direction D1 may be fixed to the body 200. The seating portion 652 may be positioned in the second direction D2 of the valve fixing portion 651 and may extend in a radially outward direction XO. The seating portion 652 may extend in a circumferential direction about the central axis X.

The lock cap 650 may include a locking portion 655 protruding in the radially inward direction XI. The locking part 655 may be locked to the lock pin 630 to limit a maximum position at which the lock pin 630 can move in the second direction D2. A pair of locking portions 655 facing each other and protruding may be provided. The locking part 655 is disposed on one side of the guide hole 650h.

The lock cap 650 may form a guide hole 650h through which the head portion 633 of the lock pin 630 passes. The guide hole 650h passes through the lock cap 650 along the central axis X. The guide hole 650h is formed in a shape corresponding to the shape of the head portion 633 viewed in the first direction D1, and may guide the moving direction of the lock pin 630.

Referring to FIG. 16, the button member 700 may be disposed to be movable in a vertical direction perpendicular to the first direction D1 with respect to the body 200. When the button member 700 is moved upwardly, the locked state may be entered, and when the button member 700 is moved downwardly, the unlocked state may be entered. The button member 700 may push the lock pin 630 in the first direction D1 when the button member 700 is changed from the released state to the locked state. When the button member 700 is changed from the locked state to the released state, the push of the lock pin 630 may be released.

The sliding part 730 of the button member 700 may surround the body 200. The sliding part 730 may include an inner side 731 facing the outer side of the body 200 and an outer side 732 opposite to the inner side 731. The inner surface 731 may move up and down along the outer surface of the body 200.

The button member 700 may include a contact surface 731a facing the first direction D1. The contact surface 731a may be located on the inner surface 731. The contact surface 731a may contact the head portion 633 of the lock pin 630. A head insertion portion 730b that is a groove or a hole recessed in the second direction D2 may be formed in the button member 700. The head insertion part 730b may be formed on the sliding part 730. The head insertion part 730b may be located above the contact surface 731a. In the locked state, the contact surface 731a presses the lock pin 630 in the first direction D1. In the released state, the head portion 633 may be inserted into the head insertion portion 730b in the second direction.

When changing from the unlocked state to the locked state, the lower end 730b1 of the head insertion part 730b moves upward while sliding on the inclined surface 633a of the head part 633 so that the lock pin 630 It can move in the first direction D1. When changing from the locked state to the unlocked state, the lower end 730b1 of the head insertion part 730b moves downward while sliding on the inclined surface 633a of the head part 633 so that the head part 633 It may be inserted into the head insertion part 730b.

The button member 700 may include a guide rib 740 configured to guide movement in the vertical direction with respect to the body 200. The guide rib 740 may protrude inward from the inner surface 731 and extend in the vertical direction.

The button member 700 may include a push bar 750 protruding downward from the upper surface part 720. The push bar 750 may be configured to be in contact with the upper side of the reservoir push member 500. The push bar 750 may press the reservoir push member 500 downward. The push bar 750 may be spaced upward from the reservoir push member 500 by the restoring force of the elastic member 1000.

17A and 17B, the lock valve 610 may be configured to be elastically deformed by the lock pin 630 when it is changed from the released state to the locked state. When changing from the locked state to the unlocked state, the lock pin 630 may move in the second direction D2 by an elastic restoring force. In this embodiment, when the lock pin 630 is changed from the locked state to the unlocked state, the lock pin 630 may move in the second direction D2 by the elastic restoring force of the lock valve 610. In another embodiment not shown, a separate elastic member such as a spring is disposed between the lock valve 610 and the lock pin 630, so that the elasticity when the lock pin 630 moves in the first direction (D1). The member is elastically deformed, and the lock pin 630 may be pushed in the second direction D2 by the elastic restoring force of the elastic member.

When the lock valve 610 is changed from the unlocked state to the locked state, the valve groove 610h is opened and elastically deformed, and when it is changed from the locked state to the unlocked state, the valve groove 610h is narrowed. And can be configured to be elastically restored. The elastically deformed lock valve 610 may block at least one of the first hole 250a and the second hole 250b. When the lock valve 610 is changed from the unlocked state to the locked state, the insertion part 611 protrudes in a direction in which at least one of the first hole 250a and the second hole 250b is located and is configured to elastically deform. Can be. In this embodiment, the insertion part 611 protrudes in the vertical direction and elastically deforms to close the first hole 250a and the second hole 250b.

The lock valve 610 may be configured such that the chemical liquid flows through the space between the outer surface of the insertion part 611 and the

surfaces

251 and 252 of the body 200 in the released state. The chemical liquid introduced into the insertion space 250s through the first hole 250a may flow out from the insertion space 250s through the second hole 250b.

The reservoir 400 may be located upstream of the insertion space 250s on the chemical liquid flow path. The reservoir 400 may form an inner space 400s for storing a chemical solution. The chemical solution in the inner space 400s may flow into the insertion space 250s through the first hole 250a.

The reservoir push member 500 may be configured to be able to press the reservoir 400 downward. The button member 700 may be configured to press the reservoir push member 500 downward when it is changed from the locked state to the released state. In the released state, the first hole 250a and the second hole 250b are opened (see enlarged views G1 of FIGS. 17A and 17B ).

Referring to FIG. 17B, when the user presses the operation unit 710 downward (MB), the button member 700 pushes the reservoir push member 500 downward, and the reservoir push member 500 pushes the reservoir 400 downward. Press. In addition, the head portion 633 of the lock pin 630 is inserted into the head insertion portion 730b of the button member 700 so that the lock valve 610 is elastically restored, and the first hole 250a and the second hole ( 250b) opens. The chemical liquid inside the pressurized reservoir 400 flows out of the reservoir 400, sequentially passes through the first hole 250a, the insertion space 250s, and the second hole 250b, and the first flow path P1 ) Can be joined.

Referring to FIG. 17A, when the user releases the operation unit 710, the button member 700 moves upward from the reservoir push member 500 by the restoring force of the elastic member 1000 (MA). The button member 700 is caught by the case 100 and is disposed at a maximum movement position upward. Thereafter, when the internal space 400s of the reservoir 400 is filled with a chemical solution and the reservoir 400 is inflated, the reservoir push member 500 may be moved upward by the reservoir 400.

Among the upper side 241 of the reservoir support part 240 and the lower side 521 of the reservoir push member 500, any one includes a convex surface in the other direction, and the other corresponds to the convex surface. It may include a concave surface. In this embodiment, the upper surface 241 of the reservoir support part 240 includes the convex surface, and the lower surface 521 of the reservoir push member 500 includes the concave surface.

Referring to the enlarged views G2 and G2' of FIGS. 17A and 17B, the upper side surface 241 of the reservoir support part 240 and the reservoir push member at a position corresponding to the part 421 of the reservoir 400 A gap in the vertical direction of the lower side surface 521 of 500 is a gap in the vertical direction between the upper side surface 241 and the lower side surface 521 at a position different from the position corresponding to the one portion 421 May be larger than (gb). The one portion 421 of the reservoir 400 is located at the center of the lower side of the reservoir 400, and a gap (ga) in the vertical direction of the convex surface and the concave surface at the central portion of the reservoir 400 is a reservoir It may be larger than a gap (gb) of the convex surface and the concave surface in the vertical direction at the edge portion of 400. Through this, the remaining amount of the chemical solution inside the reservoir 400 is minimized, and the chemical solution may be discharged through the outlet hole 420h2 located in the part 421 of the reservoir 400.

When the reservoir push member 500 is moved upward, the gap ga may be larger than the gap gb. The lower side 521 of the reservoir push member 500 may be formed of a material that is more flexible than the reservoir support part 240. When the reservoir push member 500 moves downward and the edge portion of the reservoir push member 500 is pressed by the edge portion of the reservoir support part 240, the lower side 521 of the reservoir push member 500 is elastically deformed. As a result, the difference between the gap (ga) and the gap (gb) may be reduced or eliminated.

In an embodiment referring to the enlarged view G2 of FIG. 17B, the reservoir push member 500 may include a chemical solution guide part 521a forming a groove recessed upward in the center of the lower side 521. Through this, the gap (ga) can be made larger than the gap (gb).

In another embodiment referring to the enlarged view (G2') of FIG. 17B, the part 421 of the reservoir 400 is located at the center of the lower side of the reservoir 400, and the center of the reservoir 400 is vertically On the cross-section crossing with, the concave surface of the lower side surface 521 ′ of the reservoir push member 500 may have a greater curvature than the convex surface. Through this, the gap (ga) can be made larger than the gap (gb).

The configuration and mechanism of the chemical liquid supply control device 80 ′ of the second embodiment corresponding to the configuration and mechanism of the chemical liquid supply control device 80 of the first embodiment described above with reference to FIGS. 1 to 17B are shown in FIGS. 18 to 30. The same numbers and symbols are shown in and the description thereof is omitted. That is, the description of the first embodiment may be applied to the numbers and symbols shown in FIGS. 18 to 30.

Hereinafter, with reference to FIGS. 18 to 30, a chemical solution supply control apparatus 80 ′ according to the second exemplary embodiment will be described focusing on differences from the first exemplary embodiment described above.

The chemical liquid supply control device 80' includes a case 100, a body 200, a sealing plate 300, a reservoir 400, a reservoir push member 500, a button member 700, and a drug delivery pipe 800. , A sealer 900, a coater 1100, at least one air passing filter 1200, and a boundary filter 1300 may be included. The chemical liquid supply adjustment device 80' includes an elastic push member 1400, a support slider 1600, a slider spring 1700, a selector 1800, a lock bar 1900, a lock elastic member 2000, and a switching member ( 2100), and a filter spacer 2200.

Referring to FIG. 18, the chemical solution supply control device 80 ′ may include a plurality of coaters 1100 provided to suit each purpose, but when a single coater 1100 is provided to medical staff such as a doctor Depending on the three positions (refer to 1100a, 1100b, 1100c), the coater 1100 may be combined with the chemical liquid supply control device 80'.

A selector hole 110h through which the selector manipulation unit 1830 of the selector 1800 is exposed may be formed in the case 100. The selector hole 110h may be formed to be long in one side. The selector hole 110h may be formed to guide a moving path of the selector manipulation unit 1830. In the case 100, a switching hole 110g may be formed to insert the coater 1100c to push the switching member 2100.

Referring to FIG. 18, the coater 1100a may be inserted into the case 100 to prevent the user from manipulating the button member 700 before manipulation, and by pulling out the coater 1100a in the withdrawal direction M1, elasticity The button member 700 is moved upward by the push member 1400, so that the user can press the button member 700 downward.

19 is a perspective view showing a state in which the case 100 is removed from the chemical solution supply control device 80 ′ of FIG. 18. FIG. 20 is a perspective view showing a state in which the inner housing 1500 is additionally removed from the chemical solution supply control device 80 ′ of FIG. 19.

With reference to FIGS. 18 to 20, the chemical liquid supply control device 80 ′ is configured to change the volume at which the reservoir 400 can maximally inflate (hereinafter, “medicinal liquid storage volume”). A user such as a doctor may change the volume of storage of the chemical solution by coupling the coater 1100b to the selector operation unit 1830 and moving the selector 1800 to a position (refer to arrows M2 and M3). Specifically, in a state in which the selector 1800 moves in one direction M2 and is located in the first position, the lower surface of the stepped portion 1850 of the selector 1800 is the first level surface of the reservoir push member 500 ( 517 may be contacted, and at this time, the maximum movement position of the reservoir push member 500 toward the upper side is relatively high. On the other hand, when the selector 1800 moves in the other direction M3 and is located in the second position, the lower surface of the stepped portion 1850 of the selector 1800 is the second level surface 518 of the reservoir push member 500. ) May be contacted, and at this time, the maximum movement position of the reservoir push member 500 toward the upper side is relatively lowered.

FIG. 29 is a cross-sectional view of the chemical solution supply control device 80' taken along the line S9-S9' of FIG. 25. FIG. With reference to FIGS. 18 to 20 and 29, the drug solution supply control device 80 ′ blocks the drug solution flowing along the first flow path P1 as necessary to give the patient only the drug solution through the second flow path P2. It can be configured to allow injection. The chemical liquid supply control device 80 ′ may be configured to open and close the first flow path P1. In an initial state in which the switching member 2100 is not pressed in the preset direction M4, the first pressing portion 317 is inserted into the groove 2100h of the switching member 2100, and the first flow path valve 316 is a flow path. It is in the state of opening (P1). By inserting the coater 1100c into the switching hole 110g of the case 100 and pushing the switching member 2100 in a preset direction M4, the switching member 2100 can move in the direction M4. . Accordingly, the switching member 2100 presses the first pressing portion 317 upward, the sealing plate 310 elastically deforms, and the first flow path valve 316 moves upward to close the flow path P1. do.

30 is a cross-sectional view of the chemical solution supply control device 80' taken along the line S10-S10' of FIG. 25. 18 to 20 and 30, the chemical liquid supply control device 80 ′ may be configured to open and close the second flow path P2. The chemical liquid supply adjusting device 80' is configured to change the second flow path P2 from a closed state to an open state by pressing the button member 700 by the user. In the initial state in which the button member 700 is not pressed and moves upward, the lock bar 1900 is pushed upward by the elastic restoring force of the lock elastic member 2000, and accordingly, the lock bar 1900 is a second pressing part ( 319). As the second pressing portion 319 is pressed upward, the sealing plate 310 elastically deforms and the second flow path valve 318 moves upward, closing the flow path P2. In this embodiment, the button member 700 and the lock bar 1900 are set to be spaced apart in the thatched state, but in another embodiment, the button member 700 and the lock bar 1900 are in contact with each other in the thatched state. It can also be set to the state. When the button member 700 moves downward and pushes the lock bar 1900 downward, the lock bar 1900 moves downward while elastically deforming the lock elastic member 2000, and It will release the push. As the pressing of the second pressing portion 319 is released, the sealing plate 310 is elastically restored, and the second flow path valve 318 moves downward to open the flow path P2.

FIG. 21 is a perspective view showing a state in which the button member 700, the selector 1800, and the lock bar 1900 are additionally removed from the chemical liquid supply control device 80' of FIG. 20. Referring to FIG. FIG. 22 is an exploded perspective view of the chemical solution supply control device 80' of FIG. 18. 23 is an exploded perspective view of the chemical solution supply control device 80' of FIG. 22 viewed from a different angle. FIG. 24 is an exploded perspective view showing only some of the components of FIG. 22, and unlike FIG. 22, some parts are assembled to each other. FIG. 25 is an exploded perspective view of FIG. 24 viewed from a different angle, and an enlarged view (E) of a part is shown. FIG. 26 is a perspective view showing a cross-section of the chemical solution supply control device 80' taken along the line S6-S6' of FIG. 34. FIG. Hereinafter, the configuration of the chemical solution supply control device 80' will be described in detail with reference to FIGS. 21 to 26.

The case 100 may include an inner housing 1500. In this embodiment, the first case part 100A, the second case part 100B, and the inner housing 1500 are coupled to each other to constitute the case 100, but in another embodiment not shown, the inner housing 1500 Holes corresponding to various holes formed in the first case part 100A and/or the second case part 100B may be formed instead, and the case 100 may be implemented without the inner housing 1500.

The first part 210 has a first pressing part through hole 211 through which the first pressing part 317 passes, and a second pressing part through hole 212 through which the second pressing part 319 passes. do. A switching member placement hole 213 in which the switching member 2100 is disposed is formed in the first part 210. The moving path of the switching member 2100 is guided by the switching member arranging hole 213. A part of the coater 1100 may be inserted into the switching member arrangement hole 213.

The upper sealing plate 320 may include a protrusion 324 protruding downward to surround the flow guide rib 231. The protrusion 324 may include a protrusion 324a surrounding the inflow passage guide 231a and the outflow passage guide 231b, and a protrusion 324b surrounding the connection passage guide 231c. The upper sealing plate 320 may include an upper protrusion 326 protruding upward and extending along the circumference of the connection hole 320h.

A rib groove 233 into which the protrusion 324 is inserted may be formed in the third part 230. A rib groove 233a into which the protrusion 324a is inserted and a rib groove 233b into which the protrusion 324b is inserted may be formed in the third part 230. The rib groove 233 may extend along the circumference of the flow guide rib 231. The rib groove 233 may be depressed downward.

A groove 246 into which the upper protrusion 326 is inserted may be formed in the fourth part 240. The groove 246 may be depressed upward.

An engaging groove 1510 through which the engaging protrusion 1610 of the support slider 1600 is engaged may be formed in the case 100. In this embodiment, the locking groove 1510 is formed in the inner housing 1500. In the description of the chemical solution supply control device 80', the circumferential direction centered on the protrusion 516 is defined as a circumferential direction, the direction away from the protrusion 516 is defined as a radially outward direction, and the protrusion 516 The direction of approaching to can be defined as the radially inward direction.

The support slider 1600 may be formed of, for example, a plastic material. The support slider 1600 may include at least one locking protrusion 1610 protruding in a radially outward direction. The support slider 1600 may include at least one contact portion 1630 configured to contact the protrusion 516 of the reservoir push member 500 in a radially inward direction. The support slider 1600 may include an elastic connection part 1640 configured to connect the locking protrusion 1610 and the contact part 1630 corresponding to each other, and configured to be elastically compressed and deformed in a centrifugal direction. The support slider 1600 may include a spring engaging portion 1650 protruding to engage the slider spring 1700.

The slider spring 1700 may be formed of, for example, a metal material. The slider spring 1700 may be coupled to the support slider 1600 to press the contact portion 1630 in a radially inward direction. The slider spring 1700 may be elastically deformed in a radially outward direction to apply an elastic restoring force to the contact portion 1630 in a radially inward direction.

The pressing surface 512 of the reservoir push member 500 may be pressed by the elastic push member 1400 instead of the button member 700. The reservoir push member 500 may include a protrusion 516 protruding upward from the center.

The support slider 1600 may be disposed on the button member 700. The button member 700 and the support slider 1600 may be integrally configured to be movable vertically. A support slider 1600 and a slider spring 1700 may be disposed inside the button member 700. The button member 700 may include a first part 700A and a second part 700B coupled to each other.

The elastic push member 1400 is disposed between the button member 700 and the reservoir push member 500. The elastic push member 1400 is configured to be elastically deformed when the button member 700 is operated. The elastic push member 1400 may be configured to elastically deform when the reservoir push member 500 and the button member 700 are close to each other. The elastic push member 1400 may be configured to press the reservoir push member 500 downward. The elastic push member 1400 may use one of various known methods for exerting an elastic force. For example, the elastic push member 1400 may include various types of members such as a compression spring, a tension spring, a torque spring, and an air spring, or may include a member configured to be elastically compressed with a material such as rubber.

The chemical liquid supply control device 80 ′ may be configured such that a distance at which the user presses the button member 700 is shorter than a distance at which the reservoir push member 500 presses the reservoir 400. Even if the user does not press the button member 700 to the end, the elastic push member 1400 presses the reservoir push member 500 to the end.

Although not shown, the chemical liquid supply control device 80 ′ may further include an additional elastic member (not shown) that applies a restoring force to move the button member 700 upward. The additional elastic member is disposed between the button member 700 and the reservoir push member 500.

In this embodiment, the selector 1800 includes a first part 1810 and a second part 1820 that are coupled to each other, but in another embodiment not shown, the selector 1800 may be an integrally formed part. The selector 1800 may include a selector manipulation unit 1830 protruding outward. The selector manipulation unit 1830 may be exposed to the outside through the selector holes 110h and 1530. The selector 1800 may be configured such that a position in the vertical direction with respect to the inner housing 1500 is fixed, and only rotation with respect to the inner housing 1500 is possible. The selector 1800 may include a guide protrusion 1840 protruding outward and inserted into the selector guide groove 1520 formed in the inner housing 1500 (refer to FIGS. 19 and 20 ). The guide protrusion 1840 moves laterally along the selector guide groove 1520, and the selector 1800 may be configured to be able to rotate on the same level.

The lock bar 1900 is configured to be movable in the vertical direction with respect to the case 100. One end of the lock elastic member 2000 may be supported at one end of the lock bar 1900. The body 200 may include a spring support part 280 supporting the other end of the lock elastic member 2000 and a spring arrangement part 290 on which the lock elastic member 2000 is disposed (refer to FIG. 20 ).

A groove 2100h into which the first pressing part 317 can be inserted is formed in the switching member 2100. The coater 1100 may be inserted into the device through the switching hole 1540 to move the switching member 2100.

The filter spacer 2200 is disposed on the rear side of the air passing filter 1210. The filter spacer 2200 may be disposed to contact the air passing filter 1210. The filter spacer 2200 is configured to prevent or reduce the phenomenon that the air passing filter 1210 is bent to the downstream side by the pressure of the chemical solution. An arrangement groove (not shown) into which the filter spacer 2200 is inserted may be formed in the filter cap 220B.

Although the technical idea of the present disclosure has been described with reference to some embodiments and examples shown in the accompanying drawings above, it does not depart from the technical idea and scope of the present disclosure that can be understood by those of ordinary skill in the art to which the present disclosure belongs. It will be appreciated that various substitutions, modifications and changes may be made in the range. In addition, such substitutions, modifications and changes are to be considered as falling within the scope of the appended claims.

Claims

It is a chemical liquid supply control device having a chemical liquid flow path that guides the flow of the chemical liquid,

The chemical liquid flow path includes a first flow path for guiding a chemical liquid to flow from an inlet to an outlet, and guides the chemical liquid to be classified at a fractionation point of the first flow passage, and the classified chemical liquid is fed to a downstream side of the fractionation point of the first flow passage. It includes a second flow path that can be opened and closed and guided to be joined at the confluence point,

The chemical solution supply control device,

A reservoir positioned on the second flow path to form an inner space for storing a chemical solution, and forming an inlet hole and an outlet hole connected to the inner space in a portion of an outer surface; And

The one portion of the reservoir is fixed, an inlet connection hole is formed that forms a part of the second flow path and is connected to the inlet hole, and an outflow connection hole forms a part of the second flow path and is connected to the outlet hole. Including a reservoir support part is formed,

Chemical liquid supply control device.
The method of claim 1,

The reservoir support part is disposed under the reservoir,

It is disposed on the upper side of the reservoir, further comprising a reservoir push member configured to move to the lower side to pressurize the reservoir,

Chemical liquid supply control device.
The method of claim 2,

At a position corresponding to the one part, a gap in the vertical direction of the upper side of the reservoir support part and the lower side of the reservoir push member is different from the position corresponding to the one part, the upper and lower sides of the upper side and the lower side Greater than the gap in the direction,

Chemical liquid supply control device.
The method of claim 2,

Any one of the upper side of the reservoir support part and the lower side of the reservoir push member includes a convex surface in the other direction, and the other includes a concave surface corresponding to the convex surface,

Chemical liquid supply control device.
The method of claim 4,

The one part is located in the center of the lower side of the reservoir,

A gap in the vertical direction of the convex surface and the concave surface in the central portion of the reservoir is greater than the gap in the vertical direction of the convex surface and the concave surface in the edge portion of the reservoir,

Chemical liquid supply control device.
The method of claim 4,

The one part is located in the center of the lower side of the reservoir,

On a cross-section vertically crossing the center of the reservoir, the concave surface has a greater curvature than the convex surface,

Chemical liquid supply control device.
The method of claim 2,

The lower side of the reservoir push member is formed of a material that is more flexible than the reservoir support part,

Chemical liquid supply control device.
The method of claim 2,

The reservoir push member,

A reservoir pressing unit having a lower side for pressing the reservoir; And

Including an upper plate coupled to the upper side of the reservoir pressing portion,

The reservoir pressing portion is formed of a material that is more flexible than the upper plate,

Chemical liquid supply control device.
The method of claim 1,

A connection part to which the reservoir support part is coupled to an upper side; And

A first connection hole is formed that is sandwiched between the reservoir support part and the connection part and contacts the reservoir support part and the connection part, forms a part of the second flow path, and is connected to the inflow connection hole, and the second Further comprising a sealing plate constituting a part of the flow path and having a second connection hole connected to the outlet connection hole,

Chemical liquid supply control device.
The method of claim 1,

The reservoir is configured to change the volume of the internal space,

Chemical liquid supply control device.
It is a reservoir assembly for a chemical liquid supply control device with a chemical liquid flow path guiding the flow of the chemical liquid,

A reservoir positioned on the chemical liquid flow path to form an inner space for storing the chemical liquid, and forming an inlet hole and an outlet hole connected to the inner space in a portion of an outer surface; And

The portion of the reservoir is fixed, an inlet connection hole is formed that forms a part of the chemical liquid flow path and is connected to the inlet hole, and an outlet connection hole that forms a part of the chemical liquid flow path and is connected to the outlet hole is formed. Including a reservoir support part to become,

Reservoir assembly for chemical liquid supply regulator.
The method of claim 11,

The upper side of the reservoir support part comprises an upwardly convex surface,

Reservoir assembly for chemical liquid supply regulator.
The method of claim 12,

The one part is located in the center of the lower side of the reservoir,

The convex surface is formed to protrude from a position corresponding to the center,

Reservoir assembly for chemical liquid supply regulator.
The method of claim 11,

The inlet hole and the inlet connection hole are connected vertically,

The outlet hole and the outlet connection hole are connected up and down,

Reservoir assembly for chemical liquid supply regulator.
A pumping module configured to pressurize a chemical solution;

An extension tube configured to flow the chemical liquid discharged from the pumping module according to the pressurization in the pumping module; And

Including a chemical liquid supply control device having a chemical liquid flow path connected to the extension tube,

The chemical liquid flow path includes a first flow path for guiding a chemical liquid to flow from an inlet to an outlet, and guides the chemical liquid to be classified at a fractionation point of the first flow passage, and the classified chemical liquid is fed to a downstream side of the fractionation point of the first flow passage. Including a second flow path that can be opened and closed and guided to be joined at the confluence point,

The chemical solution supply control device,

A reservoir positioned on the second flow path to form an inner space for storing a chemical solution, and forming an inlet hole and an outlet hole connected to the inner space in a portion of an outer surface; And

The one portion of the reservoir is fixed, an inlet connection hole is formed that forms a part of the second flow path and is connected to the inlet hole, and an outflow connection hole forms a part of the second flow path and is connected to the outlet hole Including a reservoir support part is formed,

Chemical solution injection device.