JP2003205038A - Syringe connecting port - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a syringe connecting port available without using an injection needle when injecting a liquid medicine or extracting a transfusion by using a syringe and available not only for an ordinary syringe but also for a twist lock type syringe. <P>SOLUTION: The syringe connecting port 10 is equipped with a duct 16 for injection and extraction provided in a branch 15 of a mixed injection pipe 11 and a rotary valve 17 provided in the duct 16 for injection and extraction. A distal end 18 of the duct 16 for injection and extraction is formed so that a circular groove area 92 is formed between a port 85 of a twist lock type syringe 80 and a collar 86. When injecting the liquid medicine or extracting the transfusion by using the twist lock type syringe 80, the twist lock type syringe 80 is mounted on the distal end of the duct 16 for injection and extraction in the state of closing the rotary valve 17, and the rotary valve 17 is opened to perform the injection or extraction by the twist lock type syringe 80. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a syringe connection port for a container such as a liquid medicine bottle or a pipe such as a mixed injection pipe, and more particularly to a container or a pipe injector suitable for loading a twist lock type syringe. It concerns connection ports.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 13, a chemical solution bottle has a rubber stopper 103 press-fitted and fixed in an opening 102 of a bottle body 101,
The injection needle 72 is pierced into the rubber stopper 103 so that the drug solution inside can be extracted. Specifically, the opening 1 of the bottle body 101
Press the rubber plug 103 into 02 and press the outer peripheral flange 104 of the opening 102.
It has a structure in which the rubber plug 103 is fixed by a cap 105 fixed to the. When extracting the drug solution (not shown) in the bottle with the syringe 71, the center of the cap 105 is removed by peeling (or from an opening provided in the center of the cap 105 in advance).
The rubber stopper 103 can be pierced with the injection needle 72 to extract the drug solution inside.

Further, a mixed injection pipe attached to an infusion pipe used for infusion of drug solution or artificial dialysis and for extracting infusion solution or mixing of drug solution is provided at a branch portion 112 of the mixture injection pipe 111 as shown in FIG. A rubber stopper 114 is press-fitted into the provided opening 113, and the rubber stopper 114 is fitted into the outer peripheral flange portion 115 of the opening 113.
It has a structure in which it is fixed by a cap 116 fixed to. When the infusion solution (not shown) flowing through the infusion tube is extracted by the syringe 71, the rubber stopper 114 is pierced with the injection needle 72 as in the case of the above-mentioned bottle.

Regarding the syringe, in recent years, in the medical field, in order to improve the safety of the syringe, as shown in FIG. 15 (a), a twist lock type syringe in which an injection needle is screwed into the mouth of the syringe body. Is being adopted. As shown in FIG. 15 (b), the syringe main body 82 of the twist lock type syringe 80 includes a cylinder portion 84 into which a pusher 83 is inserted, and a cylinder portion 84.
From the male part 85 protruding in a male taper shape from the inside, and a female screw part 87 formed on the inner periphery of a collar 86 which is erected in a cylindrical shape around the mouth part 85.
It has and. Twist lock syringe 80 needle 81
As shown in FIG. 15 (c), the needle 89 is attached to the distal end side of the hub portion 88, the female taper-shaped mounting portion 90 is provided on the proximal end side, and the screwing piece 91 is provided on the outer periphery of the proximal end. Has been. In this twist lock type syringe 80, as shown in FIG. 15 (a), an internal thread portion 87 of a syringe main body 82 is screwed with a screwing piece 91 of an injection needle 81, while an injection needle is attached to a mouth 85 of the syringe main body 82. The mounting portion 90 of 81 is attached, and the injection needle 81 is attached to the mouth portion 85 of the syringe body 82. According to this twist lock type syringe 80, since the injection needle 81 is screwed into the mouth portion 85 of the syringe main body 82, the injection needle 81 has a structure in which the injection needle 81 does not easily come off.
It is possible to prevent various medical accidents caused by the dropout of the.

[0005]

In the above-mentioned drug solution bottle and mixed injection tube, it is necessary to use an injection needle for piercing a rubber stopper. However, injection needles cause serious medical accidents such as nosocomial infections if they are not managed properly, so it is necessary to give sufficient consideration to their use and disposal. Therefore, using an injection needle is a cost burden such as the purchase cost of itself,
The management burden and processing burden are incurred, and the risk of accidental medical accidents such as accidental firing of used needles is incurred.

Therefore, if the mouth of the syringe can be directly inserted into the opening of the drug solution bottle or the mixed injection tube without the injection needle attached, the use of the injection needle becomes unnecessary and the above problem is solved. . That is, the present invention provides a syringe connection port that can be used without a needle.

By the way, conventionally, as a syringe connection port which can be used without a needle, Japanese Patent Laid-Open No. 2001-037887
What is described in the publication is known. The syringe connection port 120 described in the publication is, as shown in FIG. 16 (a),
A liquid-conducting needle 122 having a sharp tip facing the opening of the mixed injection tube 121 toward the outside.
Is attached, and the elastic sealing material 1 is placed on the liquid guiding needle 122.
It is wearing 23. The liquid guiding needle 122 has a liquid guiding hole 122a. This syringe connection port 120, as shown in FIG. 16 (b), when the mouth portion 73 of the syringe 71 without the injection needle 72 is pushed in, the liquid guiding needle 122 pierces the elastic sealing material 123, The mouth portion 73 and the liquid guiding hole 122a of the liquid guiding needle 122 communicate with each other. Further, when the syringe 71 is pulled out, the elastic sealing material 123 is restored and the liquid guiding hole 122a of the liquid guiding needle 122 is closed. However, the syringe connection port 120 is similar to the twist-lock syringe 80 in that the mouth 8
Those with collar 86 around 5 could not use twist lock syringe 80 because collar 86 interfered with syringe connection port 120.

In view of the above problems, the present invention is a syringe connection port that allows injection and extraction using only the syringe body without using an injection needle, and can also be used in the twist lock type syringe described above. It is intended to provide a syringe connection port.

[0009]

A syringe connection port for a container or a pipe according to claim 1 is provided in the container or the pipe,
An infusion extraction line having a tip portion into which the mouth of the twist lock type syringe can be inserted, and an internal thread portion of the twist lock type syringe disposed at the tip end of the infusion extraction line can be screwed together. It is characterized by comprising a threaded portion and a valve for operating the opening and closing of the injection and extraction conduit.

In the syringe connection port of the container or the pipe according to the second aspect, the valve is a rotary valve.

The syringe connection port of the container or the pipe according to claim 3 is made of an elastic body, and has a seal body attached to the opening of the container or the pipe, a closed through hole formed in the seal body, When the seal body is attached to the opening of the container or the pipe, a compression means for compressing the seal body toward the center of the seal body to bring the through hole into a crimp-sealed state, and attached to the upper edge of the opening of the container or the pipe To the cap member, a sleeve having a tip end portion to which the through hole of the seal main body faces the cap member, and the mouth portion of the twist lock type syringe can be fitted, and a tip end portion of the sleeve. The twist lock type syringe is provided with a threaded portion into which a female threaded portion can be screwed, and the mouth of the syringe is fitted into the sleeve, and the seal body is penetrated by the liquid pressure when the syringe is injected. To release the crimped sealed state of, characterized in that it is possible to inject a fluid into the container or the pipe from the syringe.

The syringe connection port of the container or the pipe according to claim 4 is made of an elastic body and is formed on the seal body to be attached to the opening of the container or the pipe, and the collar of the twist lock type syringe is press-fitted. It is possible and comprises a connection hole in the shape of an inverted truncated cone having a bottom with a reduced diameter toward the inside, and a through hole in a closed state formed at the bottom of the connection hole, and the connection hole has a collar of a twist lock type syringe. Is press-fitted, the through hole is expanded and the closed state of the through hole is released, and injection or extraction with a twist lock type syringe is possible.

Here, the "container" may be, for example, a liquid medicine bottle or a soft bag for containing a liquid medicine. Also,
Examples of the “pipe” include a mixed injection pipe attached to an infusion pipe forming an infusion passage.

Further, it is desirable that the "seal body" is formed of an elastic material such as silicon or natural rubber.

Further, the "compressing means" includes, for example, an outer diameter of the seal body larger than an inner diameter of the opening of the container or the pipe, and when the seal body is attached to the opening of the container or the pipe, A means for applying a tightening force in the inner diameter direction to the seal body is included in the wall surface of the opening of the pipe. In this case, the outer peripheral portion of the seal body may be provided with a convex portion projecting to the outer diameter side, or the inner peripheral portion of the opening of the container or the pipe may be provided with a convex portion projecting to the inner diameter side. The convex portion may be provided on the entire circumference in the circumferential direction, or may be partially provided in the circumferential direction.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a syringe connecting port of a container or a pipe according to the present invention (hereinafter, simply referred to as "syringe connecting port")
Say. ) Will be described with reference to the drawings.

FIG. 1 is a plan view of a mixed injection pipe 11 having a syringe connection port 10 according to the first embodiment, and FIG. 2 is a first view.
Mixed injection tube provided with the syringe connection port 10 according to the embodiment
11 is a transverse side view of 11. FIG. The mixed injection pipe 11 is, for example, a pipe provided in the middle of the infusion pipe, has a connecting portion 14 for connecting the two pipes 12 and 13 of the infusion pipe at both ends, and has a branch portion 15 in the center.

The syringe connection port 10 is a branch portion of the mixed injection pipe 11.
Injecting and extracting conduit 16 provided in 15 and injecting and extracting conduit 16
And a rotary valve 17 provided in the. The tip 18 of the injection and extraction conduit 16 has a circular groove area 92 between the mouth 85 and the collar 86 of the twist lock type syringe 80 (see FIG. 17 (b)).
Can be attached. The inner peripheral surface 18a of the tip 18 of the injecting and extracting conduit 16 is a twist lock type syringe 8
It has a female taper shape corresponding to the male taper shape of the mouth portion 0 of 0, and the mouth portion 85 of the twist lock type syringe 80 can be fitted therein. In addition, a screwing piece 19 to which a female screw portion 87 formed on the inner peripheral surface of the collar 86 of the twist lock type syringe 80 is screwed is provided at the tip of the injecting / extracting conduit 16 so as to project to the outer diameter side. The twist lock type syringe 80 is adapted to be stable in a state where it is inserted into the tip end 18 of the infusion extraction pipe line 16.

The rotary valve 17, as shown in FIG.
It includes a substantially cylindrical rotor 21, a valve casing 22, a cap 23, and a lever 24.

The rotor 21 has a substantially cylindrical shape, and a flow passage 21a penetrating in the radial direction is formed in the center thereof. One end of the rotor 21 is a flange 21b, and a lever 24 is provided so as to project in the radial direction in parallel with the flow path 21a. A fitting hole 21c for attaching the cap 23 is formed at the other end of the rotor 21. The valve casing 22 is a portion that rotatably supports the rotor 21, and is formed in the middle of the injection and extraction conduit 16. The valve casing 22 includes a cylindrical rotor accommodating region 22a whose central axis is orthogonal to the piping axis of the injection and extraction conduit 16. The cap 23 is a disk-shaped member, and a fitting pin 23a that fits into the fitting hole 21b of the rotor 21 is provided at the center of the cap 23 in a protruding manner.

As shown in FIG. 1, the rotor 21 is slidably mounted in a rotor accommodating region 22a of a valve casing 22, and a cap 23 is fitted therein to prevent the rotor from coming off.

In this embodiment, when the lever 24 is erected vertically, as shown in FIG. 2, the injecting and extracting conduit 16 is vertically communicated with the rotor 21 via the passage 21a of the rotor 21, and the lever 24 is laid down horizontally. Then, as shown in FIG. 4, the rotor 21 blocks the injection and extraction pipe line 16. In addition, when the lever 24 is laid horizontally, the infusion liquid in the mixed injection pipe 11 does not leak to the outside because the infusion extraction pipe line 16 is blocked.
Therefore, when the chemical solution is not injected, the lever 24 should be laid horizontally as shown in FIG.

When injecting a drug solution or extracting an infusion solution using the twist lock type syringe 80, as shown in FIG.
With the rotary valve 17 closed, insert a twist lock type syringe 80 at the tip of the injecting and extracting pipe line 16, and open the rotary valve 17 as shown in FIG. 6 to open the twist lock type syringe.
Inject or extract at 80.

When the twist lock type syringe 80 is loaded into the tip 18 of the infusion extraction line 16, the infusion extraction line
While fitting the mouth portion 85 into the tip end 18 of the 16 and screwing the female thread portion 87 into the screwing piece 19 of the injecting and extracting conduit 16, a twist lock type syringe 80 is attached to the tip end 18 of the injecting and extracting conduit 16. Charge. Further, since the mouth portion 85 of the twist lock type syringe 80 is inserted into the tip end 18 of the injecting / extracting conduit 16, the drug solution or the like may leak to the outside while injecting the drug solution or extracting the infusion solution. There is no.

When the injection or the extraction of the chemical solution is completed, the lever 24 of the rotary valve 17 is laid down horizontally, and the injection extraction line
It is advisable to shut off 16 and remove the twist lock syringe 80 from the infusion extraction line 16. The syringe connection port 10 allows the twist lock type syringe 80 to be screwed into the injecting and extracting conduit 16 and does not fall off during injection or extraction, which is good in terms of workability and safety. .

Although the syringe connection port 10 according to the first embodiment has been described above, the syringe connection port 10 according to the first embodiment is not limited to the above.

For example, in the above embodiment, the rotary valve 17 is used as a valve for operating the opening and closing of the injection and extraction conduit 16, but the valve is not limited to the rotary valve and various known valves are used. A valve can be applied.

Further, since the screwing piece 19 prevents the twist lock type syringe 80 from falling off during injection or extraction,
It is preferable that the screwing piece 19 is provided or not. Further, the screwing portion for screwing the female screw portion 87 of the twist lock type syringe 80 is not limited to the screwing piece 19. In addition, in the syringe connection port 10 of this embodiment, the shorter the infusion extraction conduit 16 is, the more the liquid pool in the syringe connection port 10 can be reduced, which is hygienic and preferable.

Next, the syringe connection port 30 according to the second embodiment will be described.

FIG. 7 is a plan view of a mixed injection pipe 31 having a syringe connection port 30 according to the second embodiment, and FIG. 8 is a second view.
Mixed injection tube provided with a syringe connection port 30 according to the embodiment
FIG. 31 is a transverse side view of 31. The mixed injection pipe 31 is, for example, a pipe provided in the middle of the infusion pipe, and has a connecting portion 34 at both ends for connecting the two pipes 32, 33 of the infusion pipe. A branch portion 35 is provided at the center of the mixed injection pipe 31, and an opening 36 is formed so as to face the branch portion 35. In this opening 36, a cylindrical wall portion 37 for mounting a later-described seal body 41 of the syringe connection port 30.
There is a seating portion 38 for seating the seal body 41. Wall 37
An outer peripheral flange portion 39 to which a cap member 42 of the syringe connection port 30 to be described later is attached is formed on the outer peripheral edge of the upper end thereof in a radially outward direction.

As shown in FIG. 8, the syringe connection port 30 includes a seal body 41 having a through hole 41a formed in the center thereof,
With the cap member 42 as a main constituent element, the through hole 41a is crimped and sealed, and the seal main body 41 is attached to the opening 36 of the mixed injection pipe 31, and the seal main body 41 is attached to the outer peripheral flange portion of the wall portion 37 of the opening 36. Open the mixed injection pipe 31 with the cap member 42 attached to 39.
It is fixed at 36. In addition, this syringe connection port
The reference numeral 30 is used only when a drug solution is injected into the infusion pipe by the twist lock type syringe 80, in other words, as a connection port for injection.

More specifically, the seal body 41 is a substantially disk-shaped elastic body such as silicon or natural rubber as shown in FIG. 9 (a). As shown in FIG. Center part 41b, 4
1c has a concave spherical shape. Further, the outer surface of the seal body 41 is provided with a convex portion 41d protruding in the outer radial direction, and the convex portion 4d
The outer diameter of 1d is slightly larger than the inner diameter of the wall portion 37 of the opening of the mixed injection pipe 31.

The through hole 41a is formed so as to penetrate the center of the seal body 41. As shown in FIG. 9 (a), the through hole 4
1a is formed in a slit shape, and both ends 41a1 in the longitudinal direction of the through hole 41a are cut into a V shape as shown in an enlarged view in FIG. 9C. Further, the through hole 41a has a cross section in the width direction enlarged and shown in FIG.
A slit-shaped groove 41a3 is formed inside the seal body 41 while leaving a thin film 41a2 on the outside of 1, and microscopic holes 41a4 are formed in the film 41a2 with a conical cone. The micropores 41a4 formed in the film 41a2 are shown by the dotted line in FIG. 9 (d). By forming the through hole 41a as described above, when the seal main body 41 is attached to the opening 36 of the mixed injection tube 31 and the through hole 41a is pressure-bonded, a stronger seal state can be secured, so that the transfusion It is designed to prevent leaks.

Next, as shown in FIG. 8, the cap member 42 covers the upper edge of the wall portion 37 of the opening 36 of the mixed injection tube 31 and the upper edge of the seal body 41, and the opening 36 of the mixed injection tube 31. It is fitted into the outer peripheral flange portion 39. The center of the lower surface of the cap member 42 has a convex spherical shape 43 corresponding to the concave spherical surface of the seal body 41, and the through hole of the seal body 41 is formed at the center thereof.
An opening 44 facing the 41a is formed. Cap member 42
A sleeve portion 45 is erected on the upper part of the center of the so as to surround the opening 44.

The sleeve portion 45 is designed so that the through hole 41a of the seal body 41 in the pressure-bonded and sealed state can be exposed from the outside.
The distal end 46 of the sleeve portion 45 can be inserted into the circular groove region 92 (see FIG. 17 (b)) between the mouth portion 85 of the twist lock type syringe 80 and the collar 86. The inner peripheral surface 46a of the tip 46 of the sleeve portion 45 is a twist lock type syringe 8
It has a female taper shape corresponding to the male taper shape of the mouth portion 0 of 0, and the mouth portion 85 of the twist lock type syringe 80 can be fitted therein. Also, the tip of the sleeve portion 45
On the 46, a screwing piece 47 to which an internal thread portion 87 formed on the inner peripheral surface of the collar 86 of the twist lock type syringe 80 is screwed is projected on the outer diameter side, and the twist lock type syringe 80 has a sleeve portion. It is designed to be stable when inserted into the tip 46 of 45. The cap member 42 is formed of a plastic material such as polypropylene.

As shown in FIG. 8, the syringe connection port 30 is such that the seal main body 41 is compressed in the inner diameter direction and pushed into the wall portion 37 of the opening 36 of the mixed injection pipe 31 to be seated on the seat portion 38, and the mixed injection pipe 31. Attach the cap member 42 to the outer peripheral flange portion 39 of
It is attached to the mixed injection pipe 31. At this time, the seal body
The through hole 41a of 41, by the wall portion 37 of the opening 36 of the mixed injection pipe 31,
The seal body 41 is compressed to the inner diameter side, and the through hole 41a is pressure-bonded and sealed. At this time, the through hole 41a
Has a slit shape, and both ends 41a1 in the longitudinal direction thereof are cut into a V shape, so that no gap is formed at both ends 41a1 of the through hole 41a which is pressure-bonded and sealed.

When the drug solution is injected by the twist lock type syringe 80, as shown in FIG. 10, the mouth portion 85 of the twist lock type syringe 80 is inserted into the tip end 46 of the sleeve portion 45, and the twist lock type syringe 80 is inserted. The pusher 83 is pushed in, and the through hole 41a of the seal body 41 is pushed open by the liquid pressure of the chemical liquid. In addition, a twist lock type syringe 80 is attached to the tip 46 of the sleeve portion 45.
When inserting, insert the mouth portion 85 into the tip 46 of the sleeve portion 45 and insert the female thread portion into the threaded piece 47 of the sleeve portion 45.
By screwing 87, the twist lock type syringe 80 is inserted into the tip 46 of the sleeve portion 45. Also, the tip 46 of the sleeve portion 45
Since the mouth portion 85 of the twist lock type syringe 80 is fitted into the device, the chemical liquid does not leak outside while the chemical liquid is being injected.

When the pushing of the pusher 83 is stopped after the injection of the chemical liquid is completed, the liquid pressure difference between the inside and outside of the seal body 41 disappears,
The elastic restoring force of the seal body 41 causes the through hole of the seal body 41.
41a is again in a crimp-sealed state. Therefore, even when the twist lock type syringe 80 is pulled out from the sleeve portion 45, the chemical liquid does not leak to the outside.

Although the syringe connection port 30 according to the second embodiment has been described above, the syringe connection port 30 according to the second embodiment is not limited to the above. Since the screwing portion for screwing the female screw portion 87 of the twist lock type syringe 80 prevents the syringe from falling off during injection or extraction,
The screwing piece 47 is not limited to the above. Further, in the syringe connecting port 30 of this embodiment, the thinner the thickness of the convex curved surface portion of the cap member 42 on the upper part of the seal body 41, the less the liquid pool in the syringe connecting port 30 becomes, which is hygienic. preferable. In addition, the through hole formed in the seal body may be only cut so as to penetrate through the central portion of the seal body, or may be a slit having a predetermined width so as to be in a crimped closed state when compressed. Alternatively, a conical hole penetrating in the vertical direction may be used, and various other shapes can be adopted.

Next, the syringe connection port 50 according to the third embodiment will be described.

FIG. 11 is a cross-sectional side view of the mixed injection pipe 51 in which the syringe connection port 50 according to the third embodiment is arranged. This mixed injection pipe 51 is, for example, a pipe provided in the middle of an infusion pipe, and has a connecting portion 54 for connecting two pipes 52, 53 of the infusion pipe at both ends.
There is. A branch portion 55 is provided at the center of the mixed injection pipe 51, and an opening 56 is formed so as to face the branch portion 55. This opening 56
There is a cylindrical wall portion 57 for mounting a seal main body 61, which will be described later, of the syringe connection port 50, and a seat portion 58 for seating the seal main body 61. An outer peripheral flange portion 59 to which a cap member 62 of the syringe connection port 50, which will be described later, is attached is formed on the upper peripheral edge of the wall portion 57 so as to protrude in the outer diameter direction.

As shown in FIG. 11, the syringe connection port 50 has a seal main body 61 having a through hole 63a in a closed state at the center and a cap member 62 as main components, and an opening of the mixed injection pipe 51. A seal main body 61 is attached to 56, and the seal main body 61 is fixed to the opening 56 of the mixed injection pipe 51 with a cap member 62 attached to the outer peripheral flange portion 59 of the mixed injection pipe 51. The syringe connection port 50 is used when the twist lock type syringe 80 is used to inject a drug solution into the infusion tube and to extract the drug solution from the infusion tube.

Specifically, the seal body 61 is a substantially disk-shaped elastic body such as silicon or natural rubber, and the collar of the twist lock type syringe can be press-fitted into the center of the upper side surface of the seal body 61. A connection hole 63 having a bottomed inverted truncated cone shape whose diameter is reduced toward the bottom is formed. When the collar 86 of the twist lock type syringe 80 is press-fitted into the connecting hole 63, the bottom portion is expanded. The bottom of this connection hole 63 is formed thin, and a through hole 63a in a closed state is formed at the center. This through hole 63a is a thin hole formed in the thin bottom portion of the connection hole 63 with a needle, and when the bottom portion of the connection hole 63 is expanded, the closed state is released and the hole gradually expands. .

Next, the cap member 62 is the opening of the mixed injection pipe 51.
The seal main body 61 is fixed to 56, and as shown in FIG. 11, it covers the upper edge of the wall 57 of the opening 56 of the mixed injection tube 51 and the upper edge of the seal main body 61, and the opening 56 of the mixed injection tube 51. Is fitted in the outer peripheral flange portion 59 of the. An opening 56 is formed in the center of the cap member 62 so as to face the recess of the seal body 61. The cap member 62 is made of a plastic material such as polypropylene.

As shown in FIG. 11, this syringe connection port 50 pushes the seal main body 61 into the wall portion 57 of the opening 56 of the mixed injection pipe 51 and allows it to be seated in the seat portion 58 to form an outer peripheral flange portion of the mixed injection pipe 51. The seal body 61 is fixed by a cap member 62 attached to 59. At this time, since the seal body 61 is mounted in the opening 56 of the mixed injection tube 51, the through hole 63a of the seal body 61 is maintained in the closed state.

When the collar 86 of the twist lock type syringe 80 in which the injection needle is not attached is pressed into the connection hole 63 of the syringe connection port 50, the bottom portion of the connection hole 63 is spread by the collar 86 of the twist lock type syringe 80. Through hole 63a
The blocked state of is released. Further, when the twist lock type syringe 80 is press-fitted, the through hole 63a gradually expands,
When the mouth 85 of the twist lock type syringe 80 reaches the through hole 63a, as shown in FIG. 12, the twist lock type syringe 80 is provided.
The mouth portion 85 of the 80 can be inserted into the through hole 63a. In this state, the mouth 85 of the twist lock syringe 80 and the mixed injection tube
The branch 55 of 51 communicates, and the twist lock type syringe
At 80, it is possible to inject a drug solution into the branch portion 55 of the mixed injection tube 51 and extract an infusion solution from the branch portion 55 of the mixed injection tube 51. Since the collar 86 of the twist lock type syringe 80 is fitted on the inner peripheral surface of the connection hole 63 of the seal body 61, the drug solution or the infusion solution does not leak to the outside.

Although the syringe connection port 50 according to the third embodiment has been described above, the syringe connection port 50 according to the third embodiment is not limited to the above.

Although the above-described syringe connection ports 10, 30, and 50 have been shown as examples in which they are applied to mixed injection pipes, the syringe connection port according to the present invention is not limited to mixed injection pipes and can be used in various containers or pipes. Can be provided.

[0049]

As described above, the syringe connection port according to the present invention can be injected or extracted only by the injector main body of the twist lock type injector without using the injection needle, so that the injection or the infusion of the drug solution using the injector can be performed. The burden and risk of using an injection needle can be eliminated in the extraction of.

[Brief description of drawings]

FIG. 1 is a plan view of a mixed injection tube including a syringe connection port according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an exploded view of a mixed injection tube including a syringe connection port according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a closed state of the rotary valve of the syringe connection port according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a usage state of the syringe connection port according to the first embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a usage state of the syringe connection port according to the first embodiment of the present invention.

FIG. 7 is a plan view of a mixed injection tube including a syringe connection port according to a second embodiment of the present invention.

8 is a sectional view taken along line AA of FIG.

9A is a plan view showing a seal body of a syringe connection port according to a second embodiment of the present invention, FIG. 9B is a transverse sectional view of the seal body, and FIG. 9C is both ends of a through hole of the seal body. An enlarged plan view of a portion, (d) is an enlarged cross-sectional view of a through hole of the seal body.

FIG. 10 is a cross-sectional view showing a usage state of the syringe connection port according to the second embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a mixed injection pipe including a syringe connection port according to a third embodiment of the present invention.

FIG. 12 is a sectional view showing a usage state of the syringe connection port according to the third embodiment of the present invention.

FIG. 13 is a vertical cross-sectional view showing a seal structure for a liquid medicine bottle.

FIG. 14 is a vertical sectional view showing a seal structure of a mixed injection pipe.

FIG. 15 (a) is a vertical sectional view showing a twist lock type syringe, (b) is a vertical sectional view showing a syringe body of the twist lock type syringe, and (c) is a needle of the twist lock type syringe. FIG.

16 (a) is a cross-sectional view showing a conventional needleless syringe connection port, and FIG. 16 (b) is a cross-sectional view showing a usage state of the conventional needleless syringe connection port.

[Explanation of symbols]

10 Syringe connection port according to the first embodiment 11 mixed injection tube Two pipes of 12, 13 infusion lines 14 Connection 15 branches 16 infusion line 17 Rotary valve 18 tip 18a Inner surface of tip 19 Threaded piece 21 rotor 21a channel 21b flange 21c Mating hole 22 Valve casing 22a Rotor housing area 23 cap 23a Mating pin 24 lever 30 Syringe connection port according to the second embodiment 31 mixed injection tube Two pipes for infusion pipes 32, 33 34 Connection 35 branches 36 openings 37 wall 38 Seat 39 Outer peripheral flange 41 Seal body 41a through hole 41a1 Both ends of through hole in the longitudinal direction 41a2 membrane 41a3 slit-shaped groove 41a4 Micropore 41b, 41c Center part of both upper and lower sides of the seal body 41d convex 42 Cap member 43 convex spherical shape 44 openings 45 Sleeve 46 Tip of sleeve 46a Inner surface of tip 47 screw 50 Syringe connection port according to the third embodiment 51 mixed injection tube 52, 53 two tubes of infusion pipe 54 Connection 55 Branch 56 openings 57 wall 58 Seat 59 Outer peripheral flange 61 Seal body 62 Cap member 63 Connection hole 63a through hole 63a Inner surface 71 syringe 72 needle 73 mouth 80 twist lock syringe 81 needle 82 Syringe body 83 Pusher 84 Cylinder part 85 mouth 86 colors 87 Female thread 88 Hub section 89 needles 90 mounting part 91 screw 92 circular groove area

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor, Okui Yoshihito             1-16-16 Shirashima, Minoh City, Osaka Prefecture             Industry Co., Ltd. (72) Inventor Toshiaki Takeuchi             1-16-16 Shirashima, Minoh City, Osaka Prefecture             Industry Co., Ltd. F-term (reference) 4C066 AA07 BB01 CC01 DD08 EE14                       GG13 JJ06 LL07 LL13

Claims (4)

[Claims] 1. An infusion extraction conduit having a tip portion into which a mouth of a twist lock syringe can be inserted and provided in a container or a pipe, and an infusion extraction conduit disposed at the tip end of the infusion extraction conduit. A syringe connection port for a container or a pipe, comprising: a threaded portion into which a female threaded portion of a twist lock type syringe can be screwed, and a valve for operating opening and closing of the infusion and extraction conduit. 2. The syringe connection port for a container or a pipe according to claim 1, wherein the valve is a rotary valve. 3. A seal main body made of an elastic body and attached to an opening of a container or a pipe; a closed through hole formed in the seal main body; and the seal main body attached to an opening of the container or the pipe. At this time, a compression means for compressing the seal body toward the center thereof to bring the through hole into a pressure-bonded closed state, a cap member attached to an upper edge of the opening of the container or the pipe, and a seal body for the cap member. And a sleeve having a tip portion into which the mouth of the twist lock syringe can be fitted, and a female screw portion of the twist lock syringe disposed at the tip portion of the sleeve. And a threaded portion capable of being screwed, the mouth portion of the syringe is fitted into the sleeve, and the pressure-sealed state of the through hole of the seal body is released by the liquid pressure when the syringe is injected, and the container is removed from the syringe. or Syringe connection port of the container or pipe, characterized in that it is possible to inject fluid into the pipe. 4. A seal body which is made of an elastic body and is attached to an opening of a container or a pipe, and a collar of a twist lock type syringe which is formed on the seal body and which can be press-fitted and has a diameter reduced toward the inside. A bottom inverted truncated cone-shaped connection hole, and a through hole in a closed state formed in the bottom of the connection hole, when the collar of the twist lock type syringe is pressed into the connection hole, the through hole is expanded. A syringe connection port of a container or a pipe, characterized in that the closed state of the through hole is released to enable injection or extraction with a twist lock type syringe.