KR101687199B1 - Medical Fluid Supply Valve for Medical Fluid Infuser - Google Patents

Medical Fluid Supply Valve for Medical Fluid Infuser Download PDF

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Publication number
KR101687199B1
KR101687199B1 KR1020150142779A KR20150142779A KR101687199B1 KR 101687199 B1 KR101687199 B1 KR 101687199B1 KR 1020150142779 A KR1020150142779 A KR 1020150142779A KR 20150142779 A KR20150142779 A KR 20150142779A KR 101687199 B1 KR101687199 B1 KR 101687199B1
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KR
South Korea
Prior art keywords
valve
port
chemical liquid
chemical
chemical solution
Prior art date
Application number
KR1020150142779A
Other languages
Korean (ko)
Inventor
이영규
Original Assignee
주식회사 우영메디칼
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Priority to KR1020150142779A priority Critical patent/KR101687199B1/en
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Publication of KR101687199B1 publication Critical patent/KR101687199B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • A61M2039/2473—Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
    • A61M2039/267—Valves closing automatically on disconnecting the line and opening on reconnection thereof having a sealing sleeve around a tubular or solid stem portion of the connector

Abstract

A valve housing having a valve chamber provided on a flow path and a flow path connecting a first port into which the chemical solution is injected and a second port connected to the chemical solution storage unit; The chemical solution inflow end and the chemical solution outflow end are accommodated in the valve chamber so as to be reciprocable to move toward the chemical solution inflow end side in accordance with the pressure difference between the chemical solution inflow end side and the chemical solution outflow end side and to close the chemical solution inflow end, And a valve member for opening the valve member to open the chemical liquid supply valve for the chemical liquid injector.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a chemical fluid supply valve for a chemical fluid injector,

The present invention relates to a chemical liquid supply valve used to supply a chemical liquid to be stored in a chemical liquid storage unit of a chemical liquid injector.

The liquid injector according to the related art includes a liquid storage unit capable of storing a chemical liquid and supplying a stored chemical liquid, a chemical liquid transfer tube for transferring the chemical liquid from the chemical liquid storage unit, a tube compression clip for compressing the chemical liquid transfer tube to block the chemical liquid flow, A chemical liquid supply valve mounted on the chemical liquid transfer tube and used to supply the chemical liquid to be stored in the chemical liquid storage unit, an injection unit connected to the end of the chemical liquid transfer tube (injection needle or catheter for injecting the chemical liquid into the injection object, etc.). ). The chemical liquid supply valve can be disposed at a position close to the chemical solution storage unit between the chemical solution storage unit and the tube compression clip. When the chemical liquid transfer tube is squeezed by the tube compression clip and the chemical liquid is injected through the chemical liquid supply valve, the chemical liquid is supplied to the chemical liquid storage unit via the chemical liquid transfer tube.

The chemical solution storage unit includes a chemical solution storage balloon which stores the chemical solution while being inflated by the chemical solution flowing into the inside, and discharges the stored chemical solution to the chemical solution delivery tube by the contractive force to be restored to the original state.

The chemical liquid supply valve has an injection port connected to a chemical liquid supply device such as a syringe and having an injection port through which a chemical liquid is injected from the chemical liquid supply device, Member. Of course, when the injection of the chemical liquid is stopped or the injection of the chemical liquid is completed, the valve member is restored to the original state and closed.

When the valve member is closed due to the stop of the injection of the chemical liquid or the completion of the injection of the chemical liquid during the chemical liquid supply valve through the chemical liquid supply valve, some of the injected chemical liquid remains on the flow path between the injection port and the valve member. The remaining chemical liquid may flow out to the outside through the injection port in the process of separating the chemical liquid supply device from the chemical liquid supply valve, and may cause air pollution and the like. Particularly, when a toxic chemical liquid (anticancer agent, etc.) is used, the human body may be adversely affected.

A method of sucking and removing the residual drug solution with a syringe is used to prevent harm caused by the residual drug solution between the injection port and the valve member. However, this method has a problem in that the valve member is openly operated in the process of sucking the residual chemical liquid, the chemical liquid flows backward from the chemical liquid storage unit, and there is a problem in that a small amount of residue There is a problem that the chemical liquid evaporates and flows out in a gaseous state.

BACKGROUND ART [0002] Techniques that serve as a background of the present invention are disclosed in the following patent publications.

1) Korean Registered Patent No. 10-0262930 (published on Aug. 1, 2000)

2) Korean Registered Patent No. 10-1122531 (published on Mar. 15, 2012)

It is an object of the present invention to provide a chemical liquid supply valve for a chemical liquid injector which is advantageous in terms of prevention of harm caused by residual chemical liquid between an injection port and a valve member.

The problems to be solved are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to the embodiment of the present invention, the first port (see chemical introduction port P1), the second port (see P2) connected to the chemical solution storage unit 10, 10A, (See F1 and F2) connecting the first port and the second port, and a valve chamber (see valve chamber 102) provided on the flow path; (Refer to C1) through which the chemical solution flows from the first port and a second connection end through which the chemical solution flows from the first port to the first connection end And a second connection end (refer to C2) through which the introduced chemical solution flows out to the second port side, wherein the valve member is accommodated in the valve chamber so as to allow the first connection end and the second connection end to reciprocate, The first connection end side and the second connection end side are moved toward the first connection end side or the second connection end side in accordance with the pressure difference between the first connection end side and the second connection end side, (See G1) for passing a chemical liquid is provided between the inner circumference of the valve chamber and the outer circumference of the valve member, and a second gap On the side of the second connection end (108) for providing a second gap (see G2) communicating with the first gap is formed between the valve member and the second connection end moved to the second connection end side, Supply valves 40 and 40A may be provided.

The valve housing may include an inlet tube 110 and a housing body 120, 130. Specifically, the injection pipe may have the first port at one end and the valve seat at the other end, and the internal passage may be a first flow path (see F1). The housing body is provided with an insertion opening (132) in which the other end of the injection tube is inserted, and the second port is provided on the other side. A partition (134) having a second flow path (see F2) and opposed to the other end of the injection tube fitted in the insertion opening is provided on the second flow path, and the partition has a through hole ) May be provided. The flow path includes the first flow path and the second flow path, and the valve chamber is an area between the partition and the other end of the injection tube fitted in the insertion opening, And the second connecting end may be constituted by the partition side end portion of the valve chamber.

The injection tube may be made of elastic material and may include a tubular main body portion 112 and a shielding end portion 114 for shielding one end of the main body portion. In addition, the shielding end portion is provided with a cutout portion (see 116) in which the mutually facing cutting edges are in close contact with each other due to self-elastic force, so that the cutout portion can be used as the first port.

The chemical liquid supply valve for a chemical injector according to an embodiment of the present invention may further include a housing cover 140 (see FIG. 4) coupled to one side of the housing main body while supporting the injection tube such that the first port is exposed .

The chemical liquid supply valve for the chemical injector according to the embodiment of the present invention may further include a guide (300) for guiding the reciprocating movement of the valve member. The guide includes at least one guide protrusion (310) provided on the outer periphery of the valve member; And a guide groove (320) provided along the moving direction of the valve member on the inner circumference of the valve chamber and into which the guide protrusion is inserted. Of course, the positions of the guide protrusions and the guide groove portions may be mutually changed.

According to the embodiment of the present invention, the first port (see chemical introduction port P1) from which the chemical liquid is injected from the outside, the second port (see P2) connected with the chemical storage unit 10, , A chemical liquid transfer path for connecting the second port and the third port, and a chemical solution injection path for connecting the chemical liquid transfer path and the first port are connected to each other (F1, F2 A valve housing 100 having a valve chamber (refer to a valve chamber 102) provided on the chemical liquid transfer path; (Refer to C1) through which the chemical solution flows from the first port and a second connection end through which the chemical solution flows from the first port to the first connection end And a second connection end (chemical solution outflow end, refer to C2) for allowing the introduced chemical liquid to flow out to the second and third ports, wherein the valve member allows the first connection end and the second connection end to be reciprocated And is moved toward the first connection end side or the second connection end side in accordance with the pressure difference between the first connection end side and the second connection end side, and the first connection end side is moved toward the first connection end side (See G1) for passing a chemical liquid between the inner circumference of the valve chamber and the outer circumference of the valve member, and a second gap (see G1) for passing the chemical solution is formed between the inner circumference of the valve chamber and the outer circumference of the valve member. And the second And a communication channel (108) for providing a second gap (see G2) communicating with the first gap is formed between the valve member and the second connection end moved to the second connection end side, A chemical liquid supply valve 40 can be provided.

Means for solving the problems will be more specifically and clarified through the embodiments, drawings, and the like described below. In addition, various solution means other than the above-mentioned solution means may be further proposed.

According to the embodiment of the present invention, when the chemical liquid remaining in the chemical solution injection path between the first port (chemical solution injection port, see P1) and the valve member 200 is removed, the valve member is moved toward the chemical solution inlet end The chemical liquid inflow end is closed by the valve member, so that the residual chemical liquid can be stably removed without causing the chemical liquid in the chemical liquid storage unit (10, 10A) to flow back to the first port side.

Further, since the first port is constituted by the cut-out portion (see 116) in which the cut end surfaces facing each other are in close contact with each other by the self-elastic force, the residual chemical liquid between the first port and the valve member, It is possible to positively prevent the liquid or the liquid from evaporating and flowing out to the gaseous state.

FIG. 1 is a configuration diagram showing a chemical injector to which a chemical liquid supply valve according to a first embodiment of the present invention is applied.
2 is a perspective view showing the chemical liquid supply valve shown in Fig.
3 is a perspective view taken along the line AA in Fig.
4 is a sectional view taken along the line BB of Fig.
5 is a cross-sectional view taken along line CC of Fig.
6 is a cross-sectional view taken along line DD of Fig.
FIGS. 7 and 8 are cross-sectional views illustrating the operation of the chemical liquid supply valve shown in FIG.
9 is a perspective view showing a chemical injector to which a chemical liquid supply valve according to a second embodiment of the present invention is applied.
10 is a sectional view showing the chemical liquid supply valve shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. For a better understanding of the invention, it is to be understood that the size of elements and the thickness of lines may be exaggerated for clarity of understanding. Further, the terms used to describe the embodiments of the present invention are mainly defined in consideration of the functions of the present invention, and thus may be changed depending on the intentions and customs of the user and the operator. Therefore, the terminology should be interpreted based on the contents of the present specification throughout.

1 to 8 show a chemical liquid supply valve and a chemical liquid injector to which the chemical liquid supply valve according to the first embodiment of the present invention is applied.

1, a chemical liquid injector to which a chemical liquid supply valve according to a first embodiment of the present invention is applied includes a chemical liquid storage unit 10 configured to store a chemical liquid and supply a stored chemical liquid, a chemical liquid storage unit 10 A tube compression clip 30 for blocking the flow of the chemical liquid by pressing the chemical liquid transfer tube 20 and a chemical liquid transfer tube 20 mounted on the chemical liquid transfer tube 20, And a chemical liquid supply valve 40 used to supply the chemical liquid to be stored in the storage unit 10. [

The chemical solution storage unit 10 may include a chemical solution storage balloon which stores the chemical solution while being inflated by the chemical solution flowing into the inside, and discharges the stored chemical solution to the chemical solution transfer tube 20 by a contractive force to be restored to the original state . Alternatively, the chemical liquid storage unit may include a cylinder, a piston, and an elastic member (for example, a coil spring). When the chemical liquid flows into the cylinder, the piston moves backward while overcoming the elastic force of the elastic member, And the chemical liquid in the stored cylinder flows out to the chemical liquid transfer tube 20 while the piston is advanced by the restoring force of the elastic member to the original state.

The chemical liquid transfer tube 20 has an upstream chemical liquid transfer tube 22 and a downstream chemical liquid transfer tube 24. The upstream side chemical liquid transfer tube 22 is connected to the chemical liquid storage unit 10. A tube pressing clip (30) is disposed on the downstream side chemical liquid transfer tube (24). Although not shown, an injection unit such as a needle or a catheter is connected to the distal end of the downstream side chemical liquid transfer tube 24 for injecting a drug solution into the patient (the injection target). A chemical liquid flow control unit or the like for controlling the flow rate of the chemical liquid delivered to the patient along the downstream chemical liquid transfer tube 24 may be mounted on the downstream chemical liquid transfer tube 24.

2 to 6, the chemical liquid supply valve 40 includes a valve housing 100 and a valve member 200.

The valve housing 100 is connected to a chemical liquid supply device such as a luer lock syringe and is connected to a first port P1 through which the chemical liquid is supplied from the chemical liquid supply device, (P2) and a third port (P3) to which the downstream side chemical liquid transfer tube (24) is connected. The valve housing 100 is also mounted on the flow paths F1 and F2 and the flow paths F1 and F2 through which the first port P1, the second port P2 and the third port P3 communicate with each other, And has a valve chamber 102 provided therein. The flow paths F1 and F2 are divided into a chemical solution transfer path for connecting the second port P2 and the third port P3 and a chemical solution injection path for connecting the first port P1 and the chemical solution transfer path, (102) are arranged on the chemical solution injection path in the flow paths (F1, F2). A valve member (200) is disposed in the valve chamber (102).

The valve chamber 102 has a chemical liquid inflow end (C1) and a chemical liquid outflow end (C2). The chemical liquid inflow end C1 has a structure to communicate with the side of the first port P1 which is the chemical liquid injection port and the chemical liquid from the first port P1 flows into the inside of the valve chamber 102 through the liquid chemical inflow end C1. Lt; / RTI > The chemical solution outlet end C2 communicates with the second and third ports P2 and P3 so that the chemical solution flowing into the valve chamber 102 flows through the chemical solution outlet C2 to the second and third ports P2 and P3. (P2, P3).

The valve member 200 is accommodated in the valve chamber 102 such that it can reciprocate between the chemical solution inflow end C1 and the chemical solution outflow end C2 and flows into the chemical solution inflow end C1 or the chemical solution outflow end C2 Can be brought into close contact with each other.

A first communication channel (not shown) for providing a first or second gap G1 for smoothly passing the chemical liquid between the inner circumference of the valve chamber 102 and the outer circumference of the valve member 200 is provided on the inner circumference of the valve chamber 102, 106 are provided. In one example, the first communication channel 106 may be formed to have a recessed groove structure.

The chemical solution inflow end C1 is provided with a valve seat 200 which is in close contact with the valve member 200 so that the chemical solution inflow end C1 is closed by the valve member 200 when the valve member 200 moves toward the chemical solution inflow end C1 side valve seat 104 is provided. The valve seat 104 may be integrally formed so as to have a shape in intimate contact with the valve member 200 moved to the chemical liquid inflow end C1 side.

The chemical liquid outflow end C2 is provided with a second gap G1 communicated with the first gap G1 between the valve member 200 and the chemical solution outflow end C2 that is moved when the valve member 200 moves toward the chemical solution outlet end C2 side. And a second communication channel 108 for providing a second communication channel G2. The second communication channel 106 may be formed to have a recessed groove structure.

Specifically, the valve housing 100 includes the injection tube 110, the housing bodies 120 and 130, and the housing cover 140. The housing main body 120, 130 is composed of a first tubular member 120 and a second tubular member 130.

A first port P1 is provided at one end of the injection pipe 110 and a valve seat 104 is provided around the opening at the other end. The first tubular member 120 has both ends in the longitudinal direction thereof as a second port P2 and a third port P3. The second tubular member 130 is provided at one end thereof with an insertion opening 132 into which the other end of the injection tube 110 with the valve seat 104 is inserted, And the other end is connected so as to intersect with the member 120. For example, the second tubular member 130 may be connected to the first tubular member 120 at a central portion thereof to form a T-shaped structure with the first tubular member 120.

The first flow path F1 constitutes a chemical solution injection path. The housing main body 120 or 130 has a second channel F2 as an internal channel communicating the first tubular member 120 and the second tubular member 130 with each other. The inner pipe of the first tubular member 120 constitutes a chemical liquid transfer path. An opposing partition 134 facing the other end (that is, the valve seat) of the injection pipe 110 fitted in the insertion opening 132 at a predetermined interval is provided in the inner pipe of the second tubular member 130 And a through hole 136 is formed in a central portion of the partition 134.

The flow paths F1 and F2 include a first flow path F1 and a second flow path F2 and the valve chamber 102 is connected to the other end of the injection tube 110 fitted in the insertion opening 132 Partition 134,

The chemical liquid inflow end C1 is constituted by the end of the injection tube 110 side in the valve chamber 102 and the chemical liquid outflow end C2 is constituted by the end side of the partition 134 in the valve chamber 102. [

The housing cover 140 is coupled to the outer circumference of the second tubular member 130 while supporting the outer circumference of the first port P1 side of the injection tube 110 so that the first port P1 is exposed, And the position of the injection tube 110 is fixed.

The injection tube 110 is made of a material having certain elasticity such as silicone rubber. The valve member 200 may be made of an ABS resin (acrylonitrile-butadiene-styrene resin) having excellent strength.

The injection tube 110 made of an elastic material is composed of a main body portion 112 having a tubular structure and a shielding end portion 134 for shielding one end of the main body portion 112. The shielding end portion 134 is provided with a cutout portion 116 which is in close contact with the mutually facing cutting end portions due to the elastic force of the cutout portion 134. The cutoff portion 116 is connected to the first port P1).

Reference numeral 300 denotes a guide for guiding the valve member 200 to reciprocate accurately. The guide 300 includes a guide groove 310 provided in the outer periphery of the valve member 200 and a guide groove 320 provided in the inner periphery of the valve chamber 102 so that the guide protrusion 310 can be inserted therein (See FIG. 4). Of course, the guide groove 320 is formed long along the moving direction of the valve member 200. The positions of the guide protrusion 310 and the guide groove 320 may be changed according to the operating conditions and the like.

Reference numeral 400 denotes a cap for shielding the first port P1. The cap 400 may be screwed to the housing cover 140 while covering the first port P1. The housing cover 140 may be provided with a male screw for screw connection with the cap 400.

The chemical liquid injector to which the chemical liquid supply valve 40 according to the first embodiment of the present invention is applied is configured such that the chemical liquid from the chemical liquid storage unit 10 is supplied to the upstream side chemical liquid transfer tube 22, And a downstream chemical liquid transfer tube 24, as shown in FIG. At this time, according to the chemical liquid passing through the inner pipe (chemical liquid transfer path) of the first tubular member 120, the side of the chemical liquid outflow end C2 is maintained at a higher pressure than the side of the chemical liquid inflow end C1, The member 200 is moved (floated) toward the chemical liquid inflow end C1 side and is brought into close contact with the valve seat 104 so that the chemical liquid inflow end C1 is kept closed by the valve member 200. [

When a chemical solution is to be supplied to the chemical solution storage unit 10 and stored, a tip of a chemical liquid supply device such as a Luer lock syringe is inserted into a first port (not shown) (P1). At this time, the incision portion 116 is deformed by the correct input of the tip of the chemical liquid feeder, and the incision portion 116 is opened while the incision surfaces facing each other are separated from each other.

Then, when the chemical liquid in the chemical liquid feeder is injected, the chemical liquid inflow end (C1) side is maintained at a higher pressure than the chemical liquid outflow end (C2) side by the chemical liquid injected from the chemical liquid feeder, The chemical liquid inflow end C1 is kept in the open state and the chemical liquid injected from the chemical liquid feeder flows into the chemical liquid inflow end C1, the chemical liquid outflow end C2, Is supplied to the chemical liquid storage unit 10 via the inner pipe (chemical liquid transfer path) of the first tubular member 120 and the second port P2.

In this process, the downstream chemical liquid transfer tube 24 can be squeezed into the tube compression clip 30 to prevent the chemical liquid to be supplied to the chemical liquid storage unit 10 from being transferred to the downstream side liquid chemical transfer tube 24 side.

When the chemical solution supply by the chemical solution supply unit is completed, the chemical solution outlet end C2 side is brought into contact with the chemical solution supply pressure of the chemical solution storage unit 10 (for example, the pressure of the chemical solution discharged from the chemical solution storage unit by the contractile force of the chemical solution storage balloon) The valve member 200 is moved (lifted) to the side of the chemical liquid inflow end C1 and is brought into close contact with the valve seat 104 (see FIG. 8). As a result, Thus, the chemical liquid inflow end (C1) is kept closed by the valve member (200) immediately after the chemical liquid supply by the chemical liquid supply device is completed.

After the chemical liquid supply by the chemical liquid supply device is completed, a chemical liquid may remain in the interval between the first port (P1) of the chemical liquid supply channel and the valve member (200). The chemical liquid supply valve 40 according to the first embodiment of the present invention is configured such that when the chemical liquid supply device is separated from the first port P1, the open incision part 136 is restored to the original shape, The residual chemical liquid in the section between the first port P1 and the valve member 200 is prevented from flowing through the first port P1 to the liquid or the second port P1 because the first port P1 is kept closed, It is possible to prevent evaporation and outflow into the air in a gaseous state.

The residual chemical liquid in the interval between the first port P1 and the valve member 200 can be sucked and removed using a syringe or the like. At this time, since the chemical solution outlet end C2 side is maintained at a higher pressure than the chemical solution inlet end C1 side due to the suction force for removing the remaining chemical solution, the valve member 200 is in a state of closing the chemical solution inlet end C1 Lt; / RTI > Therefore, it is possible to safely remove the residual chemical solution without the backflow of the chemical solution of the chemical solution storage unit 10 toward the first port P1 side.

9 and 10 show a chemical liquid supply valve and a chemical liquid injector to which the chemical liquid supply valve according to the second embodiment of the present invention is applied.

9 and 10, the chemical liquid injector to which the chemical liquid supply valve according to the second embodiment of the present invention is applied is similar to the chemical liquid injector according to the first embodiment, The unit 10A is configured to have an inlet port for storing the chemical liquid and an outlet port for supplying the stored chemical liquid (the chemical liquid storage unit described above (see reference numeral 10 in FIG. 2) And the chemical liquid supply valve 40A is constructed so as to exclude the third port (refer to P3 in Fig. 2) and the like.

A chemical liquid supply valve 40A is connected to an inlet port of the chemical liquid storage unit 10A and a chemical liquid transfer tube 20 is connected to an outlet port of the chemical liquid storage unit 10A. The chemical solution storage unit 10A is configured to store the introduced chemical solution while being expanded by the chemical solution flowing through the inlet port of the chemical solution storage unit 10A and to discharge the chemical solution stored in the outflow port And a chemical solution storage balloon 12 which flows out to the chemical liquid transfer tube 20 through the liquid supply tube 20.

The chemical liquid supply valve 40A is configured to be the same as or similar to the chemical liquid supply valve according to the second embodiment except that the third port (refer to P3 in Fig. 2) is omitted. The second port P2 of the chemical liquid supply valve 40A is connected to the inlet port of the chemical liquid storage unit 10A. The inlet port of the chemical solution storage unit 10A and the second port P2 of the chemical solution supply valve 40A may be connected to each other by a separate tube or may be connected by a screw coupling method or the like.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Further, the technical ideas described in the embodiments of the present invention may be performed independently of each other, or two or more may be implemented in combination with each other.

10, 10A: chemical solution storage unit
20: chemical liquid transfer tube
30: Tube crimp clip
40, 40A: chemical liquid supply valve
100: valve housing
102: Valve chamber
104: valve seat
106: first communication channel
108: Second communication channel
200: valve member
300: Guide
400: cap
C1: chemical solution inlet end (first connection end)
C2: chemical solution outlet end (second connection end)
F1: First Euro
F2: second flow
G1: first gap
G2: second gap
P1: First port
P2: second port
P3: Third port

Claims (6)

A valve housing having a first port for injecting a chemical solution from the outside, a second port connected to the chemical solution storage unit, a flow path connecting the first port and the second port, and a valve chamber provided on the flow path; And a valve member disposed in the valve chamber,
Wherein the valve chamber has a first connection end through which the chemical solution flows from the first port and a second connection end through which the chemical solution flowing through the first connection end flows out,
Wherein the valve member is received in the valve chamber so as to be reciprocable between the first connection end and the second connection end and is connected to the first connection end side and the second connection end side in accordance with a pressure difference between the first connection end side and the second connection end side Is moved to the second connection end side,
And a valve seat is provided on the first connection end side so that the valve member moved to the first connection end side closely contacts the first connection end,
A first gap is formed between the inner circumference of the valve chamber and the outer circumference of the valve member to allow the chemical liquid to pass therethrough,
And a communication channel for providing a second gap communicating with the first gap is formed between the valve member and the second connection end moved to the second connection end side,
Chemical solution supply valve for chemical injector. The method according to claim 1,
The valve housing includes an inlet tube and a housing body,
Wherein the injection pipe has the first port at one end and the valve seat at the other end,
Wherein the housing main body has an insertion opening through which the other end of the injection tube is inserted in one side and a second port in which the second port is provided on the other side and a second flow path connecting the insertion opening and the second port, A partition opposing to the other end of the injection tube fitted in the insertion opening is provided on the second flow path, and a through hole is provided in the partition,
Wherein the flow path includes the first flow path and the second flow path,
Wherein the valve chamber is an area between the partition and the other end of the injection tube fitted in the insertion opening,
Wherein the first connection end is constituted by the injection tube side end portion of the valve chamber,
And the second connection end is constituted by the partition side end portion of the valve chamber,
Chemical solution supply valve for chemical injector. The method of claim 2,
Wherein the injection tube is made of an elastic material and comprises a tubular main body portion and a shielding end portion shielding one end of the main body portion,
Wherein the shielding end portion is provided with a cutout portion which is in close contact with each other by a self-elastic force so as to be kept in a closed state, and the injection tube has the cutout portion as the first port,
Chemical solution supply valve for chemical injector. The method of claim 2,
Further comprising a housing cover coupled to one side of the housing body while supporting the injection tube to expose the first port,
Chemical solution supply valve for chemical injector. The method according to claim 1,
Further comprising a guide for guiding the reciprocating movement of the valve member,
Chemical solution supply valve for chemical injector. The method of claim 5,
The guide
At least one guide protrusion provided on an outer periphery of the valve member;
And a guide groove portion provided on the inner circumference of the valve chamber along the movement direction of the valve member and into which the guide projection is inserted,
Chemical solution supply valve for chemical injector.
KR1020150142779A 2015-10-13 2015-10-13 Medical Fluid Supply Valve for Medical Fluid Infuser KR101687199B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150142779A KR101687199B1 (en) 2015-10-13 2015-10-13 Medical Fluid Supply Valve for Medical Fluid Infuser

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200036958A (en) * 2018-09-28 2020-04-08 주식회사 휴벡셀 Adaptor assembly for epidural catheter
WO2021167143A1 (en) * 2020-02-21 2021-08-26 아도바이오 주식회사 Tip for spraying tattoo dye
WO2021177483A1 (en) * 2020-03-04 2021-09-10 아도바이오 주식회사 Device for delivering material by applying optimum spray cycle
KR20220153754A (en) 2021-05-12 2022-11-21 주식회사 이엠텍 Valve for liquid chemical injector

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US20100249586A1 (en) * 2007-11-19 2010-09-30 Cocker Robin C Fluid Delivery System with Multi-Dose Fluid Source

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US20100249586A1 (en) * 2007-11-19 2010-09-30 Cocker Robin C Fluid Delivery System with Multi-Dose Fluid Source

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200036958A (en) * 2018-09-28 2020-04-08 주식회사 휴벡셀 Adaptor assembly for epidural catheter
KR102124834B1 (en) 2018-09-28 2020-06-22 주식회사 휴벡셀 Adaptor assembly for epidural catheter
WO2021167143A1 (en) * 2020-02-21 2021-08-26 아도바이오 주식회사 Tip for spraying tattoo dye
WO2021177483A1 (en) * 2020-03-04 2021-09-10 아도바이오 주식회사 Device for delivering material by applying optimum spray cycle
KR20220153754A (en) 2021-05-12 2022-11-21 주식회사 이엠텍 Valve for liquid chemical injector

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