JP4056746B2 - Syringe connection port - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a syringe connection port of a pipe such as a container such as a chemical solution bottle or a mixed injection pipe, and particularly relates to a syringe connection port of a container or a pipe suitable for inserting a twist lock type syringe.
[0002]
[Prior art]
Conventionally, as shown in FIG. 3 , a rubber stopper 103 is press-fitted and fixed to the opening 102 of the bottle body 101, and the medicine bottle can be extracted by inserting an injection needle 72 into the rubber stopper 103. ing. Specifically, the rubber plug 103 is press-fitted into the opening 102 of the bottle body 101, and the rubber plug 103 is fixed with a cap 105 fixed to the outer peripheral flange portion 104 of the opening 102. When extracting the drug solution (not shown) in the bottle with the syringe 71, the center of the cap 105 is peeled and removed (or the injection needle 72 is inserted into the rubber stopper 103 in advance). It can be pierced to extract the internal chemical.
[0003]
Also, attached to the infusion tubing used in such chemical infusion or dialysis, mixed injection tube or the like is performed infusion extraction and contamination of the drug solution, as shown in FIG. 4, provided in the branch portion 112 of the mixed injection tube 111 A rubber plug 114 is press-fitted into the opening 113, and the rubber plug 114 is fixed by a cap 116 fixed to the outer peripheral flange portion 115 of the opening 113. When the infusion solution (not shown) flowing through the infusion piping is extracted by the syringe 71, the injection needle 72 is pierced into the rubber stopper 114 as in the case of the bottle.
[0004]
As for the syringe, in recent years, in order to improve the safety of the syringe in the medical field, as shown in FIG. 5 (a), a twist lock type syringe in which an injection needle is screwed into the mouth of the syringe body has been adopted. It's getting on. Syringe body 82 of the twist-lock type syringe 80, as shown in FIG. 5 (b), a cylinder portion 84 which pusher 83 is charged, the mouth 85 projecting from the cylinder portion 84 Osutepa shape, mouth And an internal thread portion 87 formed on the inner periphery of a collar 86 erected in a cylindrical shape around the portion 85. Needle 81 of twist-lock type syringe 80, as shown in FIG. 5 (c), Yes and the needle 89 is attached to the distal end side of the hub portion 88, there are female taper-shaped mounting portion 90 on the proximal side, the group A threaded piece 91 is provided on the outer periphery of the end. The twist-lock type syringe 80, as shown in FIG. 5 (a), the syringe while screwing Nishigohen 91 of the needle 81 into the internal thread portion 87 of the body 82, needle mouth portion 85 of the syringe body 82 The mounting portion 90 of 81 is mounted, and the injection needle 81 is attached to the mouth portion 85 of the syringe main 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 is difficult to drop off. Various medical accidents can be prevented.
[0005]
[Problems to be solved by the invention]
The above-described drug solution bottle and mixed injection tube need to use an injection needle to pierce the rubber stopper. However, if the injection needle is neglected, it may cause a serious medical accident such as nosocomial infection. Therefore, sufficient consideration should be given to its use and disposal. Therefore, the use of a needle will incur a cost burden such as the purchase cost of itself, a management burden and a processing burden, and also a risk of an unexpected medical accident such as misfiring of a used needle. It will be.
[0006]
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 attaching the injection needle, 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.
[0007]
By the way, conventionally, as a syringe connection port that can be used without a needle, those described in Japanese Patent Application Laid-Open No. 2001-037887 are known. Syringe connection port 120 described in this publication, as shown in FIG. 6 (a), and Shirubeekihari 122 having a sharp tip toward the outside is attached to the opening of the mixed injection tube 121, the liquid guiding needle An elastic sealing material 123 is mounted on 122. The liquid introduction needle 122 has a liquid introduction hole 122a. As shown in FIG. 6 (b), when the syringe connection port 120 pushes in the mouth 73 of the syringe 71 not fitted with the injection needle 72, the liquid introduction needle 122 breaks through the elastic seal material 123, and the syringe 71 The mouth portion 73 and the liquid introduction hole 122a of the liquid introduction needle 122 communicate with each other. Further, when the syringe 71 is pulled out, the elastic sealing material 123 is restored, and the liquid introduction hole 122a of the liquid introduction needle 122 is closed. However, if this syringe connection port 120 has a collar 86 around the mouth portion 85 like the twist lock type syringe 80, the twist lock type syringe 80 is used because the collar 86 interferes with the syringe connection port 120. I couldn't.
[0008]
Therefore, in view of such problems, the present invention is a syringe connection port that can be injected and extracted only by the syringe body without using a syringe needle, and can be used also in the above-described twist lock type syringe. The purpose is to provide.
[0009]
[Means for Solving the Problems]
[0010]
The syringe connection port of the container or pipe according to claim 1 is a syringe connection port for connecting a twist lock type syringe having a mouth part and a collar provided around the mouth part to the container or the pipe, A seal body made of an elastic body and attached to the opening of a container or a pipe, and a bottomed inverted truncated cone shape formed on the seal body, into which a collar of a twist lock type syringe can be press-fitted and has a diameter reduced toward the inside And a closed through hole formed at the bottom of the connection hole. When the outer periphery of the collar of the twist lock type syringe is press-fitted into the inner periphery of the connection hole, the through hole is expanded. Then, the closed state of the through-hole is released, and the mouth of the twist-lock syringe is inserted into the through-hole that has been released from the closed state, so that injection or extraction by the twist-lock syringe is possible.
[0011]
Here, examples of the “container” include a chemical bottle for storing a chemical and a soft bag. Examples of the “pipe” include a mixed injection pipe attached to an infusion pipe that forms an infusion channel.
[0012]
Further, it is desirable that the “seal main body” be formed of an elastic body such as silicon or natural rubber.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a syringe connection port (hereinafter simply referred to as “syringe connection port”) of a container or a pipe according to the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is a cross-sectional side view of a co-infusion tube 51 provided with a syringe connection port 50 according to an embodiment of the present invention . The mixed injection pipe 51 is, for example, a pipe provided in the middle of the infusion piping, and there is a connecting portion 54 that connects the two pipes 52 and 53 of the infusion piping at both ends. A branch portion 55 is provided at the center of the mixed injection tube 51, and an opening 56 is formed so as to face the branch portion 55. The opening 56 includes a cylindrical wall portion 57 for mounting a seal body 61 (described later) of the syringe connection port 50 and a seating portion 58 for seating the seal body 61. An outer peripheral flange portion 59 for attaching a cap member 62 (described later) of the syringe connection port 50 is formed on the peripheral edge of the upper end of the wall portion 57 so as to protrude in the outer diameter direction.
[0015]
As shown in FIG. 1 , the syringe connection port 50 includes a seal body 61 having a closed through-hole 63 a formed at the center and a cap member 62 as main components, and seals the opening 56 of the mixed injection tube 51. A main body 61 is attached, and the seal main body 61 is fixed to the opening 56 of the mixed injection pipe 51 by 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 a chemical solution is injected into the infusion piping with the twist lock type syringe 80 and when a chemical solution in the infusion piping is extracted.
[0016]
Specifically, the seal body 61 is a substantially disc-shaped elastic body such as silicon or natural rubber, and a collar of a twist lock type syringe can be press-fitted into the center of the upper surface of the seal body 61 and is compressed toward the inside. A connection hole 63 having a bottomed inverted truncated cone shape having a diameter is formed. When the collar 86 of the twist lock type syringe 80 is press-fitted into the connection hole 63, the bottom portion is pushed and expanded. The bottom of the connection hole 63 is formed thin, and a closed through hole 63a is formed at the center. The through-hole 63a is a thin hole at the bottom of the connection hole 63 with a needle. When the bottom of the connection hole 63 is expanded, the closed state is released and the hole gradually expands. .
[0017]
Next, the cap member 62 fixes the seal body 61 to the opening 56 of the mixed injection tube 51, and as shown in FIG. 1 , the upper edge of the wall portion 57 of the opening 56 of the mixed injection tube 51 and the seal body 61. The upper peripheral edge is covered and fitted into the outer peripheral flange portion 59 of the opening 56 of the mixed injection tube 51. An opening 56 is formed so that the center of the cap member 62 faces the recess of the seal body 61. The cap member 62 is formed of a plastic material such as polypropylene, for example.
[0018]
As shown in FIG. 1 , the syringe connection port 50 pushes the seal main body 61 into the wall portion 57 of the opening 56 of the mixed injection tube 51 and is seated on the seating portion 58 to be attached to the outer peripheral flange portion 59 of the mixed injection tube 51. The seal body 61 is fixed by the cap member 62 that has been prepared. At this time, since the seal body 61 is in a state of being attached to the opening 56 of the mixed injection tube 51, the through hole 63a of the seal body 61 is maintained in a closed state.
[0019]
When the collar 86 of the twist lock type syringe 80 in a state where the injection needle is not attached is press-fitted into the connection hole 63 of the syringe connection port 50, the bottom portion of the connection hole 63 is pushed wide by the collar 86 of the twist lock type syringe 80 and penetrates. The closed state of the hole 63a is released. Further, As you pressed the twist-lock type syringe 80, through hole 63a is gradually spread, when the mouth portion 85 of the twist-lock type syringe 80 reaches the through hole 63a, as shown in FIG. 2, the twist-lock The mouth portion 85 of the syringe 80 can be inserted into the through hole 63a. In this state, the mouth portion 85 of the twist lock type syringe 80 and the branch portion 55 of the mixed injection tube 51 communicate with each other. The twist lock syringe 80 injects the chemical solution into the branch portion 55 of the mixed injection tube 51 and the mixed injection tube 51. The infusion solution can be extracted from the branch portion 55. In addition, since the collar 86 of the twist lock type syringe 80 is fitted to 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.
[0020]
Having described the injector connecting port 50 according to the embodiment of the present invention, the syringe connecting port 50 according to the embodiment of the present invention is not limited to the above.
[0021]
Although the syringe connection port 50 mentioned above illustrated the embodiment applied to the mixed injection tube, the syringe connection port according to the present invention is not limited to the mixed injection tube and can be provided in various containers or pipes.
[0022]
【The invention's effect】
As described above, since the syringe connection port according to the present invention can be injected and extracted only by the syringe body of the twist lock type syringe without using the injection needle, the injection is performed in the injection of the liquid medicine or the extraction of the infusion using the syringe. The burden and risk of using a needle are eliminated.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a co-infusion tube including a syringe connection port according to an embodiment of the present invention .
FIG. 2 is a cross-sectional view showing a usage state of the syringe connection port according to the embodiment of the present invention .
FIG. 3 is a longitudinal sectional view showing a sealing structure of a chemical bottle.
FIG. 4 is a longitudinal sectional view showing a seal structure of a mixed injection pipe.
5A is a longitudinal sectional view showing a twist lock type syringe, FIG. 5B is a longitudinal sectional view showing a syringe body of the twist lock type syringe, and FIG. 5C is a view showing a needle of the twist lock type syringe. FIG.
6A is a cross-sectional view showing a conventional needleless syringe connection port, and FIG. 6B is a cross-sectional view showing a use state of a conventional needleless syringe connection port.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 50 Syringe connection port 51 Mixed injection pipes 52 and 53 Two pipes 54 of infusion piping Connection part 55 Branch part 56 Opening part 57 Wall part 58 Seating part 59 Outer peripheral flange part 61 Seal body 62 Cap member 63 Connection hole 63a Through-hole 63a Inner peripheral surface 71 Syringe 72 Syringe needle 73 Mouth part 80 Twist lock type syringe 81 Syringe needle 82 Syringe body 83 Pusher 84 Cylinder part 85 Mouth part 86 Collar 87 Female thread part 88 Hub part 89 Needle 90 Mounting part 91 Screwing piece 92 Circular groove area

Claims (1)

A syringe connection port for connecting a twist lock type syringe having a mouth portion and a collar provided around the mouth portion to a container or a pipe,
A seal body made of an elastic body and attached to an opening of a container or piping;
A bottomed inverted frustoconical connection hole formed in the seal body, into which a collar of a twist lock type syringe can be press-fitted, and reduced in diameter toward the inside;
A closed through hole formed at the bottom of the connection hole,
When color outer circumference of the twist-lock type syringe on the inner periphery of the connecting hole is press, the closed state of the through hole presses widened through hole is released, the twist-lock in a through hole to release the closed state A syringe connection port of a container or a pipe , wherein a mouth of the syringe is inserted to enable injection or extraction by a twist lock type syringe.

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