JP2002274519A - Liquid vessel, and liquid vessel connector using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid vessel excellent in operation and capable of realizing aseptic pouring of liquid content without generating mixture of bubbles, and to provide a liquid vessel connector using the liquid vessel. SOLUTION: This liquid vessel 10 is integrally formed of plastic by a submerged sealing method, and liquid is sealed therein substantially without any vacancy. In the liquid vessel connector, the liquid vessel 10 is connected to a liquid delivery piece, and the liquid delivery piece comprises a delivery piece body for slidably fitting a delivery part 12 of the liquid vessel, a hollow needle provided therein, and a discharge port communicated therewith. The liquid vessel 10 is lightly fixed to the liquid delivery piece by engaging a projecting part 15 of the delivery part with a locking part in the delivery piece body. When the liquid vessel 10 is slidably moved to the distal side of the delivery piece body to pierce a tip 12a of the delivery part by the hollow needle, the liquid vessel 10 is communicated with the liquid delivery piece to discharge the liquid 18 in the liquid vessel outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic liquid container in which a chemical solution or the like is sealed, and to a liquid container connected body in which a liquid outlet for discharging an internal solution is connected to the liquid container.

[0002]

2. Description of the Related Art Drugs such as antibiotics and heparin are appropriately injected from a co-infusion port of an infusion circuit as needed, or a connecting portion of a catheter is used when connecting or exchanging an infusion circuit. Or have been injected from. In this operation, generally, the medicine contained in an ampoule or the like is once collected in a syringe and then injected from the co-infusion port of the infusion circuit or the connection portion of the catheter while taking care not to allow air to enter the syringe. It is done by that.
In some cases, an extra operation of removing the injection needle from the syringe may be required when injecting the drug.

[0003] However, this method has a problem that it is troublesome and there are many chances of contamination and contamination. In addition, when injecting the above-mentioned medicine from the co-injection port or the connection part, it is required to perform a careful operation so that air is not mixed, so that there is a problem that an excessive burden is imposed on a person engaged in medical treatment and the like. there were. Therefore, for the purpose of easily injecting the medicine into the infusion container, the flexible plastic container is made to be connectable with the co-injection port of the infusion circuit, and the container is pressed by pressing the container. It has been proposed to discharge a drug sealed and filled in a container. Further, there is a commercially available product provided with a means for preventing air from entering, such as a commercially available product (Vital Signs Co., Ltd.) shown in FIG.

This commercially available product has a bellows-like pump portion 91.
And a cylindrical nozzle portion 92 communicating therewith, a tab member 93 detachably provided at the tip thereof, and a fin-shaped holding portion 94. It is characterized by having. According to the ampoule, after all the bubbles inside the ampule are driven to the overfilling chamber 96, the tab member 93 is cut off together with the overfilling chamber 96 at the cutout portion 97, so that no bubbles are present in the medicine. Can be discharged.

[0005] However, in the ampoule described above, it may be necessary to shake or hit the container in advance in order to drive the internal air bubbles into the overfilling chamber 96. Sometimes I miss it. Further, when the tab member 93 is cut off, there is a risk that the tip of the nozzle portion 92 may be accidentally touched by a hand, and there is a problem that safety and sterility cannot be sufficiently secured. Also, if you stop the injection operation during the operation,
Blood may flow back into the container or air may be mixed in the container due to the restoring force of the container itself.

Further, although the ampoule is provided with the holding portion 94 to improve the ease of holding, no consideration is given to the touch, and the ampule is provided on the holding portion 94 for the purpose of preventing slippage. When the projected ridge 95 hits a finger, the finger is hurt at the time of operation. Therefore, an object of the present invention is to provide a liquid container which has good operability and can realize an aseptic injection operation of a medicine without causing air bubbles, and a liquid container connected body using the same. It is to be.

[0007]

Means for Solving the Problems and Effects of the Invention A liquid container according to the present invention for solving the above-mentioned problems has a flexible accommodation portion, a cylindrical lead-out portion communicating with the accommodation portion, and
The lead-out portion has a convex portion or a concave portion on an outer peripheral surface thereof, and the respective portions are integrally formed from plastic, and a liquid is sealed therein without substantial space. It is characterized by having.

[0008] According to the liquid container of the present invention, since there is substantially no space in the liquid container, there is no trouble in expelling the air bubbles, and the co-injection port and the catheter of the infusion circuit are kept free of air. The drug can be easily injected from the connection portion of the device. Further, the liquid container of the present invention has a liquid outlet (a hollow needle that can penetrate the distal end of the outlet, a discharge port that can be connected to a co-infusion port of an infusion circuit, a connection part of a catheter, or the like). ), The aseptic injection of the drug can be realized with a simple method and with good operability.

In order to discharge the liquid in the container, for example, the cylindrical lead-out portion may be gripped with two fingers, and the flexible accommodating portion may be pressed with another finger. From the viewpoint of improving the operability of the liquid container of the present invention, it is preferable that the liquid container is provided with holding portions having a predetermined shape at both ends of the outlet portion. That is, a preferred embodiment of the liquid container according to the present invention is provided with a flexible storage portion, a cylindrical lead portion communicating with the storage portion, and provided along the lead portion on both sides of the lead portion. A substantially plate-shaped holding portion, and the lead-out portion has a convex portion or a concave portion on an outer peripheral surface thereof, and the holding portion has a thickness substantially equal to a diameter of the lead-out portion, and the lead-out portion has Together with a substantially uniform plane, and has a uniform width in a direction orthogonal to both the thickness direction and the axial direction of the lead-out portion, the respective portions are integrally formed of plastic, and the housing portion and A liquid is sealed inside the outlet portion in a state where there is substantially no space.

According to the preferred embodiment, the diameter of the lead-out portion and the thickness of the holding portion are substantially equal, and the surface of the lead-out portion and the surface of the holding portion are formed so as to be substantially flush with each other.
The surfaces of the lead-out portion and the holding portion of the liquid container can be used as a space for attaching a label indicating the contents of the liquid container and the product name. Therefore, it is possible to easily confirm the content liquid filled in the liquid container, and it is possible to remarkably reduce a possibility that an error such as a wrong container is used.

The holding portion has a uniform width in a direction perpendicular to both the thickness direction of the lead-out portion (the thickness direction of the holding portion itself) and the axial direction of the lead-out portion. Since the side surface does not substantially have a shape that is recessed (or curved) toward the lead-out portion side (inside), a sufficient space for attaching the label can be secured. In addition, the thickness of the holding portion is substantially equal to the diameter of the lead-out portion, and together with the lead-out portion, forming substantially the same plane, there is no problem that bending tends to occur when affixing to the label. Thus, the operability at the time of label application is excellent.

In the case of the above-mentioned commercially available product (the ampoule shown in FIG. 12), the surface of the nozzle portion 92 and the surface of the holding portion 94 are not on the same plane (see FIG. 12B).
There has been a problem that it is difficult to directly attach a label indicating the liquid content or the like to the medicine container body. However, according to the liquid container and the preferred embodiment of the present invention, such a problem can be solved. Further, in the liquid container, the surface of the lead-out section and the surface of the holding section are substantially flush with each other, so that the feel when held by hand is extremely good. According to such a liquid container, unlike the above-described conventional product (see FIG. 12), there is no problem that the convex ridge 95 causes pain to the finger.

[0013] In order to solve the above-mentioned problems, a liquid container connected body according to the present invention comprises the above-mentioned liquid container of the present invention connected to a liquid lead-out device. And a hollow needle provided inside the drawer main body with the pointed end facing the open end side of the drawer main body, and the hollow needle. And a cylindrical or hollow needle-like discharge port extending from the other end of the lead-out device main body, and an outer peripheral surface of the lead-out portion on an inner peripheral surface of the lead-out device main body on an open end side. A locking portion that engages with a convex portion or a concave portion provided on the surface, and further includes a lead portion of the liquid container, and a locking portion of the lead tool body and a convex portion of the lead portion. Alternatively, the slider may be further slid further toward the other end of the lead-out tool body than a locking position defined by engagement with the recess. If it is, characterized by Nuki穿 the tip of the outlet portion by the hollow needle.

The liquid container in the liquid container connected body of the present invention includes, specifically, (i) a flexible accommodation portion;
A cylindrical lead-out portion communicating with the housing portion, wherein the lead-out portion has a convex portion or a concave portion on an outer peripheral surface thereof, and the respective portions are integrally formed from plastic, and inside thereof. The liquid is sealed in a substantially spaceless state, or (ii) a flexible housing, a cylindrical outlet communicating with the housing, and both sides of the outlet. And a substantially plate-shaped holding portion provided along the lead-out portion, wherein the lead-out portion has a convex portion or a concave portion on an outer peripheral surface thereof, and the holding portion has a thickness of the lead-out portion. Of approximately the same diameter as the diameter of
And has a uniform width in a direction perpendicular to both the thickness direction and the axial direction of the lead-out portion, the respective portions are formed integrally from plastic, and inside the housing portion and the lead-out portion, The liquid is sealed in a state where there is substantially no space.

According to the above-mentioned liquid container connecting body of the present invention, the lead-out portion of the liquid container connected to the lead-out tool main body of the liquid lead-out tool and locked at the locking position is moved from the locking position. Further, the tip can be pierced by a hollow needle in the liquid lead-out device by sliding the other end side of the liquid lead-out device main body. In addition, as a result, since the outlet of the liquid container and the discharge port of the liquid outlet are in communication, the contents of the liquid container can be discharged to the outside.

Further, it is preferable that the liquid container connected body of the present invention has a packing made of a thermoplastic elastomer on the inner peripheral surface of the lead-out tool main body. In this case, the state before the tip of the liquid container is punctured by the hollow needle, that is, the state in which the lead-out portion of the liquid container is connected to the inside of the lead-out tool body of the liquid lead-out tool and locked at the locking position. Even if there is, the liquid outlet device can be stably held in the outlet device main body. In addition, since the hermeticity between the lead-out portion and the liquid lead-out device main body can be significantly improved, it is possible to eliminate the possibility that air is accidentally mixed into the liquid lead-out device main body.

Further, it is preferable that the connected body of liquid containers of the present invention is provided with a check valve on the lead-out tool main body. Thus, it is possible to prevent blood or the like from flowing back into the liquid container or air from being mixed during the injection operation.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a liquid container and a connected liquid container of the present invention will be described in detail with reference to the drawings. [Liquid container] The liquid container of the present invention comprises, for example, as shown in FIG. 1, a flexible housing portion 11 and a cylindrical lead-out portion 12 communicating with the housing portion. Is integrally formed from plastic, and a liquid (not shown) is sealed therein in a substantially spaceless state.

(Manufacturing Method of Liquid Container) The liquid container of the present invention is manufactured, for example, through the steps shown in FIGS. 2 (a) to 2 (c). The lead-out section 12 and the accommodating section 11 ′ constituting the liquid container 10 ′ are molded in advance, and the accommodating section 1 is formed.
1 ′ opening (filling port) 11b through the outlet section 12 and the housing section 1
1 'is filled with the liquid 18 (FIG. 2 (a)). Here, when forming the accommodating portion 11 ′, it is not sealed beforehand, and an opening (filling opening) 11 b for introducing a liquid is provided, and used for sealing the opening 11 b in a later step. A remaining portion 11c is also provided. At the time of forming the lead-out portion 12 and the housing portion 11 ', the holding portion 13
Etc. may be molded.

The liquid container 10 '(particularly, the lead-out portion 12 and the storage portion 11') can be formed by various known methods. For example, after the liquid container 10 ′ is formed by blow molding, the liquid container 10 ′ is filled with a liquid, and the operation of sealing the filling port (see FIG. 2) is performed to continuously obtain the liquid container 10. Can be. Each part of the liquid container 10 (preferably the storage part 11 and the lead-out part 12
In addition, each part of the liquid container 10 including the holding part 13, the hook part 14, and the convex part 15) is integrally formed of plastic. By integrally forming the components of the liquid container 10, the production of the liquid container 10 is simplified, and the production cost can be reduced.

The closing of the liquid container 10 'is achieved by a so-called submerged sealing method (FIGS. 2B and 2C). That is, the liquid 18 is filled beyond the sealing position 110 of the storage portion 11 ', and the remaining portion 11c is joined at the sealing position 110 to form a joint portion 11d. Thus, the liquid container 10
The liquid 18 is sealed in a substantially spaceless state, that is, in a state in which the volume of the head space is substantially zero, inside (the inside of the accommodating portion 11 and the lead-out portion 12). be able to.

Although the filling port is provided at the bottom of the container in the example of FIG. 2, the position of the filling port is not limited to this, and can be changed as appropriate. The method of joining (welding) is not particularly limited, and heat joining (heat sealing),
Conventionally known various methods such as impulse sealing, high-frequency bonding, and ultrasonic bonding can be employed. After the filling of the liquid 18, the liquid container 10 sealed by bonding can be sterilized after manufacturing or at an appropriate stage during the manufacturing process. As a sterilization method, various methods usually used in the medical field can be adopted. Among them, known heat sterilization methods such as high-pressure steam sterilization, hot water shower sterilization, and hot water sterilization are generally used. Note that the sterilization step is not always necessary when the liquid is filled in an aseptic state.

(Protrusion or Depression on Outer Peripheral Surface of Outer Portion) In the liquid container of the present invention, the cylindrical outlet portion 12 that communicates with the accommodating portion 11 of the liquid container 10 has a convex portion 15 on the outer peripheral surface thereof. (See FIG. 1). When the liquid container 10 of the present invention is applied to the liquid container connecting body 1 of the present invention described later, the convex portion 15 is provided on the inner peripheral surface 22b on the side of the opening end 21a of the guide body 21. It engages with the portion 24 and is provided to lightly fix the liquid container 10 at the locking position 25 (see FIGS. 8 and 9). If it is possible to sufficiently engage with the locking portion 24 in the lead-out tool main body 21, a concave portion may be provided on the outer peripheral surface of the lead-out portion 12 instead of the convex portion 15.

The degree of engagement between the projection 15 and the engagement part 24 is as follows.
When the connected liquid container 1 is stored or the like, the distal end 12a of the lead-out portion of the liquid container 10 is strong enough not to be erroneously pierced by the hollow needle 30 in the lead-out tool main body 21. When the liquid container 10 is used, it is required that the liquid container 10 can be easily slid to the other end 21b side of the liquid guiding device main body by pushing the liquid container 10 into the liquid discharging device 20, 200.

The shape of the convex portion 15 (or concave portion) is not particularly limited.
What is necessary is just to design according to the shape of 4. In the embodiment shown in FIG. 1, the protrusion 15 is formed by two protrusions formed in the circumferential direction along the outer peripheral surface of the lead-out portion 12. (How to Use the Liquid Container) In the liquid container of the present invention, in order to discharge the liquid filled in the liquid container 10, for example, as shown in FIG. What is necessary is just to hold | grip and press the accommodating part 11 which has flexibility with another finger.

A liquid container 10 ′ shown in FIG. 5 is another embodiment of the liquid container according to the present invention, and has no holding portions 13 on both sides of the lead-out portion 12. Even in the case of this embodiment, in order to discharge the liquid in the liquid container 10 ′, as in the case shown in FIG.
What is necessary is just to hold | grip with one finger | toe, and press the accommodation part 11 which has flexibility with another finger | toe. (Container) The container 11 of the liquid container 10 is
It is flexible enough to be easily crushed by hand when draining liquid from the outside.

In the embodiment shown in FIG.
0, the cross-sectional shape of the lead-out portion 12 in the axial direction x is substantially rhombic as is clear from FIGS. 3A and 3B, and the cross-section in the direction y orthogonal to the axial direction x. The shape is substantially elliptical as shown in FIGS. 3 (c) and 3 (d). By making the cross-sectional shape of the housing portion 11 in the axial direction x substantially rhombic, as shown in FIG. 6, when the housing portion 11 is crushed by hand, the leading end 12a side of the housing portion 11 and the housing portion 11 The bottom 11a side overlaps. Therefore, the liquid filled in the container 11 is transferred to the liquid container 10.
Can be discharged to the outside without waste.

Further, by making the cross-sectional shape of the storage portion 11 in the direction y orthogonal to the axial direction x substantially elliptical, the liquid container 10 can be easily gripped and rolled when placed on a desk or the like. It becomes difficult. (Deriving Portion) In the liquid container of the present invention, the leading end portion 12a of the discharging portion 12 of the liquid container 10 is
9 is further advanced to the other end 21b side of the lead-out tool main body 21 than the locking position 25 of FIG.
(Refer to (b))), it is required that it has such a softness that it can be easily penetrated by the hollow needle 30 in the lead-out device main body 21.

(Holder) In the embodiment shown in FIG.
The lead-out portion 12 of the liquid container 10 further includes a pair of fin-shaped holding portions 13 on both sides thereof. Here, as shown in FIG. 4 (a), by making the holding portions 13 a pair,
When the liquid contained in the container 11 and the outlet 12 of the liquid container 10 is drawn out to the outside, the liquid container 1
It becomes easy to hold 0 by hand.

The surface 12b of the lead-out portion 12 and the surface 13a of the holding portion 13 are formed so as to be substantially flush with each other. Thereby, as shown in FIG. 4B, when the liquid contained in the liquid container 10 is discharged to the outside,
The gripping property of the liquid container 10 is further improved. Furthermore, as shown in FIG. 7, the label 17 can be stuck over the surface 12b of the lead-out portion and the surface 13a of the holding portion, and the sticking of the label 17 can be easily performed. By affixing the label 17, it is possible to easily confirm the content liquid filled in the liquid container 10, and it is possible to reduce the possibility that a mistake such as misusing the liquid container 10 for use may occur. Label 17 shown in FIG.
In the case where a label formed in a tubular shape such as a tubular shrink label or the like is employed, a slight unevenness (not shown) may be provided on the side surface of the holding portion 13 to prevent the label from falling off.

The holding portion 13 is formed in a hollow plate-like member (FIG. 3C). Since the holding portion 13 is hollow, the touch of the hand becomes soft when the liquid container 10 is actually held by hand, so that it is possible to prevent the hand from being hurt when using the liquid container 10. it can. Also,
By making the holding part 13 hollow, the thickness of the holding part 13 can be easily adjusted, and even when the surface 12b of the lead-out part and the surface 13a of the holding part are designed to be substantially flush with each other. In addition, it is not necessary to use excessive plastic for forming the holding portion 13. Therefore, it is economical.

The holding portion 13 of the liquid container 10 further has a hook portion 14 on the distal end 12a side of the lead-out portion. As shown in FIG. 8B, the hook portion 14 engages with the flange portion 23 provided on the liquid lead-out tool 20 when the liquid container connected body 1 is used (in use), and the liquid container 10 and the liquid container 10 are connected to each other. The lead-out tool 20 is firmly connected. Accordingly, it is possible to prevent the connection portion with the liquid outlet device 20 from moving or disconnection from the liquid outlet device 20 when the liquid container 10 is used, and the operability (usability) of the liquid container 10 is reduced. It is much improved compared to.

Also, the provision of the hook portion 14 facilitates the transport of the liquid container 10 on the production line, and also facilitates the positioning in production. Therefore, it is suitable for mass-producing highly accurate products. (Material of each part) The plastic for forming each part of the liquid container according to the present invention is not particularly limited.
Various types of conventionally known plastics (including polymers and elastomers) that are acceptable for use in medical devices can be used.
Specifically, polyethylene, polypropylene, poly 4-
Methylpentene [for example, trade name “T” of Mitsui Chemicals, Inc.
PX "), polyolefins such as polytetrafluoroethylene; ethylene-tetracyclododecene copolymers [for example, trade name" ZEONEX "of Nippon Zeon Co., Ltd., trade name" Apel "of Mitsui Chemicals, Inc.], etc. Polycyclic olefins include polyesters such as polyethylene naphthalate (PEN), polyethylene terephthalate (PET), and polyarylate.

When the liquid to be filled in the liquid container is easily deteriorated by a gas such as oxygen or light, plastic having a gas barrier property or a light shielding property may be used as the plastic constituting the liquid container. . Specifically, plastics having gas barrier properties have a gas permeability of 0.5 cm ³ / m ² · 24 h ·· when formed into a film.
atm or less, preferably 0.1 cm ³ / m ² · 24h ·
atm or less is required. Examples of the plastic having such properties include an ethylene-vinyl alcohol copolymer, polyvinylidene chloride, polyacrylonitrile, polyvinyl alcohol, polyamide, and polyester. The above-mentioned plastics may be used alone or as a mixture of two or more kinds, or two or more kinds may be laminated and used.

The liquid enclosed in the liquid container of the present invention is not particularly limited. For example, vitamins (multivitamins), antithrombotic agents such as heparin, insulin,
Drugs such as antibiotics, antitumor agents, analgesics, inotropic agents, intravenous anesthetics, antiparkinson agents, ulcer treatment agents, corticosteroids, arrhythmia agents, correction electrolytes, and the like. [Liquid container connected body] The liquid container connected body of the present invention is, for example, as shown in an exploded view of FIG.
Is connected to the liquid outlet 20.

According to the embodiment shown in FIG.
The convex portion 15 provided on the outer peripheral surface of the lead-out portion 12 and the locking portion 24 provided on the inner peripheral surface 22b of the lead-out device main body 21 of the liquid lead-out device 20 engage with each other. Thereby, both are lightly fixed at the locking position 25 (FIG. 8A). on the other hand,
When the liquid container 10 is used, the liquid container 10 is pushed into the lead-out tool main body 21 so that the lead-out tool main body 2 is pressed.
The hollow needle 30 provided in the tip 1
And the liquid container 10 and the liquid lead-out device 20 communicate with each other. In addition, this allows the liquid in the liquid container 10 to be discharged to the outside through the discharge port 36 of the liquid lead-out tool 20 (FIG. 8B). At this time, since the hook portion 14 of the liquid container 10 and the flange portion 23 of the liquid outlet device 20 are engaged with each other, the liquid container 10 and the liquid outlet device 2
0 can be firmly and reliably connected to each other, and it is possible to prevent the connecting portion of the two from moving or being disconnected during use (FIG. 8 (b)).

According to the embodiment shown in FIG. 9, as in the case shown in FIG.
5 and the engaging portion 24 provided on the inner peripheral surface 22b of the guide body 21 engage with each other, and both are lightly fixed at the engaging position 25 (FIG. 9A). On the other hand, even when the liquid container 10 is used, similarly to the case shown in FIG. 8, the hollow needle 30 penetrates the distal end 12 a of the lead-out device 12 by pushing the liquid container 10 into the lead-out device main body 21, Liquid container 1
0 and the liquid lead-out device 200 communicate with each other. In addition, the liquid in the liquid container 10 can be discharged to the outside through the discharge port 36 (FIG. 9B).

In this embodiment, the flange portion 23 is not provided on the outlet device main body 21 of the liquid outlet device 200,
Instead, a protruding portion 26 different from the locking portion 24 is provided on the inner peripheral surface 22 b of the guide body 21. Therefore, the strong connection between the liquid container 10 and the liquid lead-out tool 200 during use is made by engaging the convex part 15 provided on the outer peripheral surface of the lead-out part 12 of the liquid container 10 with the convex part 26. (FIG. 9B). In this case as well, FIG.
As in the case shown in (1), it is possible to prevent the connection portion of both from moving or being disconnected during use.

(Liquid Leading Device) In the connected liquid container shown in FIGS. 8 and 9, the liquid leading devices 20 and 200 are provided with a leading device main body 21 having a hollow needle 30 therein, and a liquid discharging device 20 and a liquid discharging device 20. And a discharge port 36 arranged on the downstream D side. Here, the “downstream side” refers to the liquid outlets 20 and 2
00 shows the flow direction of the liquid when the liquid is discharged from the liquid container 10 by using the liquid delivery device 20,
200 is “upstream” on one end 21 a side,
b and the discharge port 36 side are “downstream”.

Outlet main body 21 of liquid outlets 20 and 200
Is a substantially cylindrical member, and its open end 21a and the inner surface of the lead-out tool main body 21 define a fitting port into which the lead-out part 12 of the liquid container 10 is slidably fitted. The lead-out tool main body 21 is provided with a locking portion 24 on the inner peripheral surface 22b on the side of the opening end 21a for engaging with the convex portion 15 (or concave portion) of the lead-out portion 12 of the liquid container 10. As described above, when the lead-out part 12 of the liquid container 10 according to the present invention is inserted into the fitting opening of the lead-out tool main body 21 as described above, the locking part 24 becomes
2 is provided to lightly fix the inside of the lead-out tool body 21 (FIGS. 8 (a) and 9 (a)). Locking part 24
And the degree of engagement with the convex portion 15 of the liquid container 10 is as described above.

The shape of the locking portion 24 is not particularly limited, and may be designed according to the shape of the above-mentioned convex portion 15 (or concave portion). Liquid lead-out device 2 shown in FIGS. 8 and 9
The locking portions 24 at 0 and 200 are made of an elastomer packing described later, and are formed by protrusions formed in the circumferential direction along the inner circumferential surface 22b.
In the liquid deriving device 20 shown in FIG.
Is further provided with a flange portion 23 on the outer peripheral surface 22a on the side of the opening end 21a. As described above, the flange portion 23 connects the lead-out portion 12 of the liquid container 10 to the lead-out tool main body 21.
The hook portion 14 provided on the holding portion 13 of the liquid container 10 when the liquid container 10 is moved further into the other end portion 21b side from the locking position 25 of the liquid container 10. 8 and 20 (see FIG. 8).
(b)). The effect obtained by firmly anchoring the two is as described above.

In the liquid lead-out device 200 shown in FIG. 9, a flange portion is not provided on the outer peripheral surface 22a, and instead, a convex portion 26 is provided on the inner peripheral surface 22b of the liquid lead-out device main body 21. ing. The convex portion 26 and the liquid container 10
As described above, the liquid container 10 and the liquid lead-out tool 200 can be tied up by the engagement of the protrusion 15 of the lead-out part 12 (FIG. 9 (b)). 8 and 9, the hollow needle 30 provided inside the lead-out tool main body 21 has its tip 30a directed toward the open end 21a side (upstream U side) of the draw-out tool main body. It is attached to the inner peripheral surface 22b or the other end 21b of the delivery tool main body 21.

This hollow needle 30 is shown in FIGS.
As shown in (b), when the lead-out portion 12 of the liquid container 10 is further advanced to the other end 21b side from the locking position 25 of the lead-out tool main body 21, the liquid penetrates the distal end 12a of the lead-out portion. The container 10 is communicated with the liquid outlets 20 and 200.
Thus, the liquid filled and sealed in the liquid container 10 can be discharged to the outside through the discharge ports 36 of the liquid outlets 20 and 200. The hollow needle 30 may be a so-called double-ended needle integrated with a cylindrical or hollow needle-shaped member constituting a discharge port 36 described later.

The discharge ports 36 of the liquid outlets 20 and 200 are
For example, it is formed into a cylindrical shape as shown in FIGS. Since the co-injection port of the infusion circuit is generally an opening having an inner diameter of about 3 to 5 mm, the outer diameter of the discharge port is required to be a size that fits with the inner diameter. The discharge port of the liquid outlet is not limited to a cylindrical one.For example, when a sealing material that closes the co-injection port can be punctured, or when injecting a drug from a catheter connection part. A hollow needle-shaped member (hollow puncture needle) may be used.

As shown in FIG. 10, when the discharge port 36 'of the liquid discharger 20' is formed as a hollow puncture needle, a cylindrical or sheath-shaped cover is used so that fingers are not accidentally stabbed during use. 51 can also cover the tip of the discharge port 36 '. Figure 1
In FIG. 0, reference numeral 21 ′ denotes a lead-out tool main body. The cover 51
May be made of various conventionally known plastics (supra) that are acceptable for medical instruments. Also,
It may be an elastic cover made of an elastic body such as various conventionally known rubbers and thermoplastic elastomers which are allowed for medical instruments. Examples of such an elastic body include the same rubber and thermoplastic elastomer that can be used as a valve body of a check valve described later.

When the cover 51 is an elastic cover, it can be used by pressing the puncture needle-shaped discharge port 36 ′ and the elastic cover 51 against the mouth of the chemical container as it is. That is, in this case, since the elastic cover 51 bends and the discharge port 36 'is exposed to the outside, the cover 5
There is no need to remove 1. Therefore, the risk of accidentally stabbing a finger during use can be further reduced. It is preferable that the liquid guiding device main body 21 of the liquid discharging device further includes a packing made of a thermoplastic elastomer on the inner peripheral surface 22b. In the liquid lead-out device shown in FIGS. 8 and 9, the locking portion 24 also serves as this. In this case, FIG.
9 (a) and FIG. 9 (a), the hook 12 of the liquid container 10 is in a state where the leading end 12a of the lead-out portion of the liquid container 10 is locked at the locking position 25 of the drawer main body 21. Even in a state in which the flange 14 and the flange portions 23 of the liquid outlet devices 20 and 200 are not engaged, the liquid outlet device can be stably held in the outlet device main body 21. The deriving unit 12
Since the airtightness between the liquid discharge device 20 and the main body of the liquid discharge device 20 can be remarkably improved, mixing of gas into the liquid discharge devices 20 and 200 and leakage of the liquid from the liquid discharge devices 20 and 200 are sufficiently prevented. be able to.

Each part of the liquid outlets 20 and 200 is preferably made of plastic. In this case, the liquid lead-out device 20 can be formed by integral molding, and the hollow needle 30 and the hollow needle-like discharge port are also formed of plastic, so that disposal processing after using the liquid lead-out devices 20 and 200 is simplified. Things. The plastic for forming each of the portions is not particularly limited, and includes various conventionally known plastics (including polymers and elastomers) that are acceptable for medical devices. For example, polyethylene, polypropylene, poly 4-methylpentene [for example, trade name “TP” of Mitsui Chemicals, Inc.
X "), polyolefins such as polytetrafluoroethylene; polycyclic olefins such as ethylene-tetracyclododecene copolymer [for example," Apel "(trade name of Mitsui Chemicals, Inc.)]; polyacetal (POM); acrylonitrile-butadiene -Styrene copolymers (ABS); polyesters such as polyethylene naphthalate (PEN), polyethylene terephthalate (PET), and polyarylate; and benzene-based polymers such as polyphenylene sulfide (PPS).

The method of manufacturing the liquid outlet 20 is not particularly limited, and various known methods can be adopted. However, when the entire liquid outlet 20 is made of plastic, injection molding or the like is used. Preferably, it is formed. (Check Valve) In the embodiment shown in FIGS. 8, 9 and 10, a check valve for preventing a backflow from the discharge port 36 side between the hollow needle 30 and the discharge port 36 of the lead-out tool main body 21. 40 are provided.

The shape of the check valve 40 is not particularly limited. For example, as shown in FIG. 11, a valve seat 41 having a communication hole 41a and a discharge port 36 side (downstream D side) of the valve seat 41 are provided. ), And a latching member 43 abutting on the discharge port 36 side of the valve body 42, wherein the valve body 42 is made of an elastic body, and the hollow needle 30 side (upstream) U
It is preferable that the material be easily compressed and deformed when it receives the fluid pressure P from the side). In FIG. 11A, a state where the valve body 42 is compressed and deformed is indicated by a dotted line.

In such a check valve, a liquid container (not shown) is connected to an open end (fitting port, not shown) of the lead-out tool body on the upstream U side of the check valve 40, and When the fluid pressure P is applied to the valve element 42 from the container, the valve element 42 undergoes compression deformation, and the communication hole 41a is opened. As a result, a gap 44 is formed between the valve seat 41 and the valve element 42, and the liquid is discharged to the downstream D side of the check valve 40 through the gap 44. On the other hand, when the load of the fluid pressure P is stopped, the valve body 42 that has been subjected to the compression deformation returns to the original shape, closes the communication hole 41a, and the gap 44 disappears. At this time, the direction in which the valve element 42 tends to return to the original shape (the direction that is coaxial with the direction of the fluid pressure P and is opposite to the direction of the fluid pressure P), and the path through which the liquid flows when flowing backward ( (Indicated by arrows in the drawing) intersect (preferably, orthogonal). Therefore, the liquid is not pushed back with the return operation (restoring operation) of the valve body 42,
Therefore, the backflow of the liquid can be prevented to a very high degree.

In the conventional check valve, the valve moves in the same direction as the direction in which the fluid flows, and a phenomenon occurs in which the fluid moves (that is, reverse flows) with the restoration operation of the valve. Could not be suppressed to a high degree. On the other hand, by using the check valve having the above structure, the backflow of the liquid is extremely prevented, and even if the backflow occurs, the amount thereof can be suppressed to a very small amount. Therefore, it is possible to sufficiently suppress the possibility of causing a problem that air bubbles are mixed in the liquid container or in the guide member main body 21 of the liquid guide member.

The latching member 43 of the check valve 40 is for preventing the valve body 42 from shifting and moving due to the fluid pressure P. As shown in FIGS. 11 (a) and 11 (b), The valve body 42 is caught by the body 42 and stops moving. The material of the valve body 42 is not particularly limited, and is soft enough to be easily deformed by the fluid pressure P of the liquid, and
In a state where the fluid pressure P is not applied, any shape may be used as long as the shape is maintained. More specifically, rubbers such as natural rubber, silicone rubber, isoprene rubber, butadiene rubber, and fluoro rubber; plastics such as polyethylene and polypropylene; One that is soft enough to be deformed.

Among them, the above-mentioned thermoplastic elastomers, more specifically, for example, styrene-ethylene / butylene-styrene block copolymer (SEBS), styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer Polymer (SI
S), modified SEBS such as maleic acid modification, styrene-ethylene / propylene-styrene block copolymer (SE
PS), styrene-based elastomers such as styrene-ethylene / butylene block copolymer (SEB) and styrene-ethylene / propylene block copolymer (SEP); olefin-based elastomers such as ethylene-propylene block copolymer; polyurethane-based elastomers And the like, and a mixture thereof are suitable as a material of the valve body 42.

The hardness of the valve body 42 is JIS A hardness [JI
SK6301-5.2 Spring hardness Hs (A type) measured by the method described in "Spring hardness test"]
Is preferably from 0 to 20, and more preferably from 0 to 10. (Cap) In the connected liquid container of the present invention, a cap 50 is attached to the discharge port 36 of the liquid outlet 20. By providing such a cap 50, it is possible to prevent the discharge port 36 from being contaminated during storage or the like (see FIG. 1).

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a connected liquid container according to the present invention.

FIG. 2 is an explanatory view showing an example of a manufacturing process of the liquid container according to the present invention.

FIG. 3 is a view showing one embodiment of the liquid container according to the present invention, wherein (a) is a front view, (b) is a side view, and (c) is C of (a).
FIG. 3C is a sectional view, and FIG.

FIGS. 4A and 4B are schematic views showing an operation of discharging the content liquid from the liquid container 10, wherein FIG. 4A is a front view and FIG. 4B is a side view.

FIGS. 5A and 5B are schematic views showing an operation of discharging a content liquid from a liquid container 10 ', wherein FIG. 5A is a front view and FIG. 5B is a side view.

FIG. 6 is a front view showing a state after the content liquid has been discharged from the liquid container 10.

FIG. 7 is a schematic view showing a state in which a label 17 is attached to a lead-out section 12 and a holding section 13 of the liquid container 10.

8 is a partially cutaway front view of the connected liquid container 1 shown in FIG. 1, wherein (a) shows a state before use, and (b) shows a use state.
Each is shown.

FIG. 9 is a partially cutaway front view showing another embodiment of the connected liquid container according to the present invention, wherein (a) shows a state before use;
(b) shows the use state.

FIG. 10 is a cross-sectional view of a principal part showing still another embodiment of the connected liquid container according to the present invention.

11 is a diagram showing a check valve 40 provided inside the liquid outlet device 20 shown in FIG. 1, wherein FIG. 11 (a) is a sectional view taken along the line AA of FIG. 1, and FIG. 11 (b) is a diagram of FIG. It is BB sectional drawing.

12A is a perspective view showing a commercially available liquid container, and FIG. 12B is a sectional view taken along line DD of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Liquid container connection body 10 liquid container, 11 accommodating part, 12 lead-out part,
12a Tip, 13 Holder, 15 Convex, 18
Liquid 20 liquid lead-out tool, 21 lead-out tool main body, 21a open end, 21b other end, 22b inner peripheral surface,
24 locking parts, 25 locking positions, 30 hollow needles,
36 Discharge port x-axis direction, y orthogonal direction

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E014 PA01 PB03 PC03 PC16 PE24 PF10 3E033 AA01 BA13 BB01 BB08 CA16 CA20 DB03 DE01 FA03 GA02

Claims (5)

[Claims] 1. A storage portion having flexibility, and a cylindrical lead-out portion communicating with the storage portion, wherein the lead-out portion has a convex portion or a concave portion on an outer peripheral surface thereof. Is integrally formed from plastic, and
A liquid container in which a liquid is sealed in a substantially empty state. 2. A storage section having flexibility, a cylindrical lead-out section communicating with the storage section, and a substantially plate-shaped holding section provided on both sides of the lead-out section along the lead-out section. The lead-out portion has a convex portion or a concave portion on the outer peripheral surface thereof, and the holding portion has a thickness substantially equal to the diameter of the lead-out portion and forms substantially the same plane with the lead-out portion, and The lead portion has a uniform width in a direction perpendicular to both the thickness direction and the axial direction, and the respective portions are integrally formed of plastic, and substantially inside the housing portion and the lead portion. A liquid container in which a liquid is sealed in a state where there is no space. 3. A liquid container connected body, wherein the liquid container according to claim 1 or 2 is connected to a liquid lead-out device, wherein the liquid lead-out device slidably fits a lead-out portion of the liquid container. A substantially cylindrical lead-out tool main body, a hollow needle inside the draw-out tool main body provided with a pointed end toward the open end side of the draw-out tool main body, and communicating with the hollow needle, the lead-out tool A cylindrical or hollow needle-shaped discharge port extending from the other end of the main body, a convex portion provided on the outer peripheral surface of the lead-out portion, A locking portion that engages with the concave portion, and the lead-out portion of the liquid container is partitioned by engaging the locking portion of the lead-out tool body with the convex portion or the concave portion of the lead-out portion. When the slider is further slid toward the other end of the lead-out device main body than the locked position, the hollow needle causes Wherein the leading end of the lead-out portion is penetrated. 4. The liquid container linked body according to claim 3, wherein a packing made of a thermoplastic elastomer is provided on an inner peripheral surface of the lead-out tool main body. 5. The device according to claim 3, further comprising a check valve provided on the main body.
Or the linked liquid container according to 4.