JP2020116338A - connector - Google Patents

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Publication number
JP2020116338A
JP2020116338A JP2019012537A JP2019012537A JP2020116338A JP 2020116338 A JP2020116338 A JP 2020116338A JP 2019012537 A JP2019012537 A JP 2019012537A JP 2019012537 A JP2019012537 A JP 2019012537A JP 2020116338 A JP2020116338 A JP 2020116338A
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Japan
Prior art keywords
connector
connection space
space portion
infusion line
port
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Pending
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JP2019012537A
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Japanese (ja)
Inventor
勇輝 間中
Yuki Manaka
勇輝 間中
大輔 中川
Daisuke Nakagawa
大輔 中川
拓弥 八島
Takuya YASHIMA
拓弥 八島
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Top KK
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Top KK
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Priority to JP2019012537A priority Critical patent/JP2020116338A/en
Priority to PCT/JP2020/001633 priority patent/WO2020158471A1/en
Priority to TW109102415A priority patent/TW202039023A/en
Publication of JP2020116338A publication Critical patent/JP2020116338A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02—Access sites
    • A61M39/04—Access sites having pierceable self-sealing members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/26—Valves closing automatically on disconnecting the line and opening on reconnection thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor

Abstract

To provide a connector which can reduce a fluid such as an infusion fluid accumulated in a hollow part.SOLUTION: A connector 1 connected to the middle of an infusion fluid line and used for mixture injection includes: a connector body 2 having an inflow port 21, an outflow port 22, and a connection space part 23 for connecting the inflow port 21 to the outflow port 22; an inverted bottomed cylindrical member 3 having a hollow part 31 in the inside and a mixture injection port 32 on the bottom face; a cover member 4 for fixing the bottomed cylindrical member 3 to the connector body 2; and a partition member 25 erected in the connection space part 23 and partitioning the connection space part 23 into an upstream side and a downstream side.SELECTED DRAWING: Figure 2

Description

本発明は、輸液ラインに対する混注に用いられるコネクタに関する。 The present invention relates to a connector used for mixed injection into an infusion line.

従来、輸液ラインの途中に接続されて該輸液ラインに対する薬液等の混注に用いられるコネクタが知られている（例えば、特許文献１参照）。 BACKGROUND ART Conventionally, there is known a connector that is connected in the middle of an infusion line and is used for mixed injection of a drug solution or the like into the infusion line (for example, see Patent Document 1).

前記コネクタは、輸液ラインから輸液等の液体が流入する流入口と、該液体が該輸液ラインに流出する流出口と、該流入口と該流出口とを接続する接続空間部とを備えるコネクタ本体と、コネクタ本体に接続されて輸液ラインに対する混注に用いられる混注路を形成する可撓性の有底筒状部材と、該有底筒状部材を覆って該コネクタ本体に固定するカバー部材とを備える。 The connector has a connector body including an inflow port through which a liquid such as an infusion solution flows from an infusion line, an outflow port through which the liquid flows out to the infusion line, and a connection space portion connecting the inflow port and the outflow port. A flexible bottomed tubular member that is connected to the connector body and forms a mixed injection passage used for mixed infusion to an infusion line; and a cover member that covers the bottomed tubular member and is fixed to the connector body. Prepare

前記有底筒状部材は、内部に接続空間部に連通する空洞部を備え、底面が接続空間部から離間する方向に位置するように、倒立状態で前記コネクタ本体に接続される。また、前記有底筒状部材は底面に混注口を備えており、該混注口は混注に用いられる注射筒の先端部により接続空間部方向に押圧されたときに開口して空洞部に連通する。この結果、混注口と空洞部とにより、注射筒から混注される薬液等を接続空間部に案内する混注路が形成される。 The bottomed tubular member includes a hollow portion that communicates with the connection space portion, and is connected to the connector body in an inverted state so that the bottom surface is located in a direction away from the connection space portion. The bottomed tubular member has a mixed injection port on the bottom surface, and the mixed injection port opens and communicates with the cavity when pressed in the direction of the connection space by the tip of the injection cylinder used for mixed injection. .. As a result, the mixed injection port and the hollow portion form a mixed injection passage for guiding the drug solution or the like injected from the injection cylinder to the connection space portion.

特開２００４−２０９２７８号公報JP 2004-209278 A

特許文献１に記載の前記コネクタでは、混注を行うとき以外は、輸液ラインから流入口を介して流入した輸液等の液体はそのまま接続空間部から流出口を介して輸液ラインに流出する。 In the connector described in Patent Document 1, a liquid such as an infusion solution that has flowed in from the infusion line via the inflow port flows out of the connection space portion to the infusion line via the outflow port as it is, except when mixed injection is performed.

しかしながら、前記空洞部は流入口から流出口に至る液体の流れに影響を受けない死空間となるので、前記輸液等の液体は一旦空洞部に流入するとそのまま該空洞部に滞留することになるという不都合がある。 However, since the hollow portion becomes a dead space that is not affected by the flow of the liquid from the inflow port to the outflow port, the liquid such as the infusion solution once stays in the hollow portion once it has flowed into the hollow portion. There is inconvenience.

本発明は、かかる不都合を解消して、空洞部に滞留する輸液等の液体を低減することができるコネクタを提供することを目的とする。 An object of the present invention is to provide a connector capable of eliminating such an inconvenience and reducing the amount of liquid such as infusion solution accumulated in the cavity.

かかる目的を達成するために、本発明のコネクタは、輸液ラインの途中に接続されて該輸液ラインに対する混注に用いられるコネクタであって、該輸液ラインから液体が流入する流入口と、液体が該輸液ラインに流出する流出口と、該流入口と該流出口とを接続する接続空間部とを備えるコネクタ本体と、内部に該接続空間部に連通する空洞部を備える一方、底面に注射筒の先端部により該接続空間部方向に押圧されたときに該接続空間部に連通する混注口を備え、可撓性を有する倒立した有底筒状部材と、該有底筒状部材を覆って該コネクタ本体に固定するカバー部材と、該接続空間部に立設されて該接続空間部を上流側と下流側とに区画する仕切り部材とを備えることを特徴とする。 In order to achieve such an object, the connector of the present invention is a connector which is connected in the middle of an infusion line and is used for mixed injection into the infusion line, wherein the inflow port into which the liquid flows from the infusion line and the liquid A connector main body including an outlet that flows out to the infusion line, a connection space portion that connects the inlet and the outlet, and a hollow portion that communicates with the connection space portion inside, while a bottom surface of the syringe barrel is provided. An inverted bottomed tubular member having flexibility, which has a mixed injection port communicating with the connection space when pressed by the tip portion toward the connection space, and covers the bottomed tubular member. It is characterized by comprising a cover member fixed to the connector body and a partition member which is provided upright in the connection space portion and divides the connection space portion into an upstream side and a downstream side.

本発明のコネクタによれば、前記接続空間部に前記仕切り部材を備えるので、輸液ラインから流入口を介して流入した輸液等の液体は該仕切り部材の表面に沿って前記空洞部に案内され、その後流出口から輸液ラインに流出する。従って、死空間となる前記空洞部に前記液体を滞留させることなく、輸液ラインに流出させることができる。 According to the connector of the present invention, since the partition member is provided in the connection space portion, liquid such as infusion solution that has flowed in from the infusion line via the inflow port is guided to the cavity along the surface of the partition member, After that, it flows out from the outlet to the infusion line. Therefore, it is possible to allow the liquid to flow out to the infusion line without causing the liquid to stay in the hollow portion serving as the dead space.

また、本発明のコネクタにおいて、前記仕切り部材は前記接続空間部の下流側に位置することが好ましい。 Further, in the connector of the present invention, it is preferable that the partition member is located on the downstream side of the connection space portion.

前記仕切り部材が前記接続空間部の下流側に位置することにより、該仕切り部材により区画される該接続空間部の上流側の空間が下流側の空間よりも相対的に大きくなる。そこで、前記仕切り部材の表面に沿って前記空洞部に案内される前記液体の量が多くなり、より確実に前記空洞部に前記液体を滞留させることなく、輸液ラインに流出させることができる。 Since the partition member is located on the downstream side of the connection space portion, the space on the upstream side of the connection space portion partitioned by the partition member becomes relatively larger than the space on the downstream side. Therefore, the amount of the liquid guided to the cavity along the surface of the partition member is increased, and the liquid can be more reliably discharged to the infusion line without being retained in the cavity.

また、本発明のコネクタにおいて、前記仕切り部材が前記接続空間部の下流側に位置する場合、前記空洞部は前記接続空間部に連通する大径部と該大径部に連通し前記混注口の直下まで延在する小径部とを備え、前記仕切り部材の上流側の表面は該小径部の内壁と断面視において面一であり、該接続空間部は上流側の内壁に前記コネクタ本体の該大径部側端面に向けて傾斜する傾斜溝部を備えることが好ましい。 Further, in the connector of the present invention, when the partition member is located on the downstream side of the connection space portion, the hollow portion communicates with the connection space portion with a large diameter portion and the large diameter portion of the mixed injection port. A small-diameter portion extending directly below, the upstream surface of the partition member is flush with the inner wall of the small-diameter portion in cross-section, and the connection space portion is provided on the upstream inner wall of the connector main body. It is preferable to provide an inclined groove portion that inclines toward the end surface on the diameter side.

前記仕切り部材の上流側の表面が前記小径部の内壁と断面視において面一であることにより、前記仕切り部材の表面に沿って前記空洞部に案内される前記液体が前記小径部に流入しやすくなり、該液体の流れは該小径部内の前記混注口の直下で折り返して、前記接続空間部の下流側の空間に流入する。またこのとき、前記小径部に案内される前記液体の流れの一部は、前記傾斜溝部に沿って前記大径部に案内され、該大径部の内側面で折り返した後、該大径部と前記小径部との境界に沿って流れ、前記接続空間部の下流側の空間に流入する。 Since the upstream surface of the partition member is flush with the inner wall of the small-diameter portion in cross section, the liquid guided to the cavity along the surface of the partition member easily flows into the small-diameter portion. Then, the flow of the liquid turns back just below the mixed injection port in the small diameter portion and flows into the space on the downstream side of the connection space portion. At this time, a part of the flow of the liquid guided to the small diameter portion is guided to the large diameter portion along the inclined groove portion, and after being folded back on the inner side surface of the large diameter portion, the large diameter portion. Flows along the boundary between the small diameter part and the small diameter part and flows into the space on the downstream side of the connection space part.

そこで、前記仕切り部材の表面に沿って前記小径部に流入し前記混注口の直下で折り返した流れにより、該小径部に前記液体を滞留させることがなくなる一方、前記傾斜溝部に沿って前記大径部に案内され該大径部の内側面で折り返した流れにより、該大径部に前記液体を滞留させることがなくなる。また、前記傾斜溝部に沿って前記大径部に案内され該大径部の内側面で折り返した流れが、前記小径部内の前記混注口の直下で折り返した流れを前記接続空間部の下流側の空間に案内することとなり、さらに確実に前記空洞部に前記液体を滞留させることなく、輸液ラインに流出させることができる。 Therefore, the flow that flows into the small diameter portion along the surface of the partition member and is folded back immediately below the mixed injection port does not allow the liquid to stay in the small diameter portion, while the large diameter along the inclined groove portion. The liquid guided by the portion and turned back at the inner surface of the large diameter portion prevents the liquid from staying in the large diameter portion. In addition, the flow guided along the inclined groove portion to the large diameter portion and turned back at the inner side surface of the large diameter portion, the flow turned back immediately below the mixed injection port in the small diameter portion is provided on the downstream side of the connection space portion. Since the liquid is guided to the space, the liquid can be more surely allowed to flow out to the infusion line without being retained in the cavity.

また、本発明のコネクタは、前記仕切り部材の上部が前記空洞部内に位置することを特徴とする。 Further, the connector of the present invention is characterized in that an upper portion of the partition member is located in the hollow portion.

前記仕切り部材の上部が前記空洞部内に位置する本発明のコネクタによれば、死空間となる前記空洞部が該仕切り部材により狭められているので、輸液ラインから流入口を介して流入した輸液等の液体が該仕切り部材の表面に沿って該空洞部に案内されたときに、該空洞部に該液体を滞留させることなく、確実に輸液ラインに流出させることができる。 According to the connector of the present invention in which the upper portion of the partition member is located in the hollow portion, since the hollow portion serving as a dead space is narrowed by the partition member, the infusion solution or the like flowing from the infusion line through the inflow port or the like. When the liquid of (4) is guided to the cavity along the surface of the partition member, the liquid can surely flow out to the infusion line without causing the liquid to stay in the cavity.

本発明のコネクタの一構成例を示す斜視図。The perspective view which shows one structural example of the connector of this invention. 図１のII-II線断面の第１の態様を示す説明的断面図。Explanatory sectional drawing which shows the 1st aspect of the II-II sectional view taken on the line of FIG. 図２に示す断面の構成例において、注射筒の先端部により有底筒状部材を接続空間部方向に押圧した状態を示す説明的断面図。In the configuration example of the cross section shown in FIG. 2, an explanatory cross-sectional view showing a state in which the bottomed tubular member is pressed in the direction of the connection space by the tip of the injection barrel. 図１のII-II線断面の第２の態様を示す説明的断面図。Explanatory sectional drawing which shows the 2nd aspect of the II-II sectional view taken on the line of FIG. 図４に示す断面の構成例において、注射筒の先端部により有底筒状部材を接続空間部方向に押圧した状態を示す説明的断面図。In the configuration example of the cross section shown in FIG. 4, an explanatory cross-sectional view showing a state in which the bottomed tubular member is pressed toward the connection space portion by the distal end portion of the injection barrel. 図１のII-II線断面の第３の態様を示す説明的断面図。Explanatory sectional drawing which shows the 3rd aspect of the II-II sectional view taken on the line of FIG. 図６に示す断面の構成例において、注射筒の先端部により有底筒状部材を接続空間部方向に押圧した状態を示す説明的断面図。In the configuration example of the cross section shown in FIG. 6, an explanatory cross-sectional view showing a state in which the bottomed tubular member is pressed in the direction of the connection space by the tip of the injection barrel.

次に、添付の図面を参照しながら本発明の実施の形態についてさらに詳しく説明する。 Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

図１及び図２に示すように、本実施形態のコネクタ１は、図示しない輸液ラインの途中に接続されて該輸液ラインに対する薬液等の混注に用いられる医療用器具であり、円盤状のコネクタ本体２と、コネクタ本体２に接続された可撓性を有する倒立した有底筒状部材３と、有底筒状部材３を覆ってコネクタ本体２に固定するカバー部材４とからなる。 As shown in FIGS. 1 and 2, the connector 1 of the present embodiment is a medical instrument that is connected in the middle of an infusion line (not shown) and is used for mixed injection of a drug solution or the like into the infusion line. 2, a flexible inverted cylindrical bottomed member 3 connected to the connector body 2, and a cover member 4 covering the bottomed cylindrical member 3 and fixed to the connector body 2.

コネクタ本体２は、図示しない輸液ラインから液体が流入する流入口２１と、該液体が該輸液ラインに流出する流出口２２と、流入口２１と流出口２２とを接続する接続空間部２３とを備えている。流入口２１はコネクタ本体２の側面から円盤の法線方向に形成されており、流出口２２は、流入口２１に対して対称となるコネクタ本体２の側面から円盤の法線方向に形成されている。また、接続空間部２３はコネクタ本体２のほぼ中央に形成されている。 The connector body 2 has an inflow port 21 through which a liquid flows in from an infusion line (not shown), an outflow port 22 through which the liquid flows out into the infusion line, and a connection space portion 23 connecting the inflow port 21 and the outflow port 22. I have it. The inflow port 21 is formed in the disk normal direction from the side surface of the connector body 2, and the outflow port 22 is formed in the disk normal direction from the side surface of the connector body 2 which is symmetrical with respect to the inflow port 21. There is. Further, the connection space portion 23 is formed substantially in the center of the connector body 2.

有底筒状部材３は、内部に接続空間部２３に連通する空洞部３１を備え、底面が接続空間部２３から離間する方向（図２では上方）に位置するように、倒立状態でコネクタ本体２に接続される。空洞部３１は、接続空間部２３に連通する大径部３３と、より小径の小径部３４と、大径部３３側から小径部３４方向に向かって次第に縮径し、大径部３３と小径部３４とを接続するテーパー部３５とを備えている。 The bottomed tubular member 3 includes a hollow portion 31 communicating with the connection space portion 23 therein, and the connector body is in an inverted state so that the bottom surface is located in a direction away from the connection space portion 23 (upward in FIG. 2 ). Connected to 2. The hollow portion 31 has a large diameter portion 33 communicating with the connection space portion 23, a small diameter portion 34 having a smaller diameter, and a diameter gradually decreasing from the large diameter portion 33 side toward the small diameter portion 34. And a taper portion 35 connecting the portion 34.

また、有底筒状部材３は、その底面に混注口３２を備えている。混注口３２は、混注に用いられる注射筒の先端部５（図３参照）により接続空間部２３方向に押圧されたときに小径部３４に連通する。 Further, the bottomed tubular member 3 is provided with a mixed injection port 32 on its bottom surface. The mixed injection port 32 communicates with the small diameter portion 34 when pressed in the direction of the connection space 23 by the tip portion 5 (see FIG. 3) of the injection cylinder used for mixed injection.

カバー部材４は、底面を除いて有底筒状部材３を覆っており、大径部３３に対応する大径カバー部４１と、小径部３４に対応する小径カバー部４２を備えている。また、小径カバー部４２の外周面に注射筒のロック筒（図示せず）が螺合される雄ねじ部４３を備えている。カバー４は大径カバー部４１の底面４４が、コネクタ本体２の上面に形成された環状突起２４に溶着組立されることにより、有底筒状部材３をコネクタ本体２に固定している。 The cover member 4 covers the bottomed tubular member 3 except for the bottom surface, and includes a large diameter cover portion 41 corresponding to the large diameter portion 33 and a small diameter cover portion 42 corresponding to the small diameter portion 34. Further, a male screw portion 43 into which a lock cylinder (not shown) of an injection cylinder is screwed is provided on the outer peripheral surface of the small diameter cover portion 42. The bottom surface 44 of the large-diameter cover portion 41 of the cover 4 is welded and assembled to the annular projection 24 formed on the upper surface of the connector body 2, so that the bottomed tubular member 3 is fixed to the connector body 2.

そして、コネクタ本体２の接続空間部２３には、そのほぼ中央部に仕切り部材２５が立設されている。仕切り部材２５は、接続空間部２３を上流側と下流側とに区画しており、その上部は有底筒状部材３の大径部３３内に位置している。 A partition member 25 is provided upright in the connection space portion 23 of the connector body 2 at approximately the center thereof. The partition member 25 divides the connection space portion 23 into an upstream side and a downstream side, and an upper portion thereof is located in the large diameter portion 33 of the bottomed tubular member 3.

図２に示す断面形状を備える第１の態様のコネクタ１は、図示しない輸液ラインの途中に接続されたときに、該輸液ラインから流入口２１を介して流入した輸液等の液体は、図２に矢示するように、仕切り部材２５の表面に沿って空洞部３１に案内される。そして、小径部３４の先端で折り返した後、流出口２３から輸液ラインに流出する。このとき、空洞部３１は、前記仕切り部材２５の上部が有底筒状部材３の大径部３３内に位置していることにより容積が狭められており、前記輸液等の液体を滞留させることなく、確実に前記輸液ラインに流出させることができる。 When the connector 1 of the first aspect having the cross-sectional shape shown in FIG. 2 is connected in the middle of an infusion line (not shown), a liquid such as an infusion solution that has flowed in from the infusion line through the inflow port 21 is As indicated by an arrow, the hollow member 31 is guided along the surface of the partition member 25. Then, after being folded back at the tip of the small diameter portion 34, it flows out from the outlet 23 to the infusion line. At this time, the volume of the hollow portion 31 is narrowed because the upper portion of the partition member 25 is located inside the large-diameter portion 33 of the bottomed tubular member 3, and the liquid such as the infusion solution is retained therein. Without, it is possible to reliably flow out to the infusion line.

輸液ラインに接続したコネクタ１を用いて混注を行うときには、図３に示すように、混注する薬液等が収容された注射筒の先端部５をカバー部材４の小径カバー部４２に挿入し、有底筒状部材３の天面３２をコネクタ本体２の接続空間部２３方向に押圧する。このようにすると、前述のように、混注口３２が小径部３４に連通し、混注口３２と小径部３４とからなる混注路が形成される。 When performing mixed injection using the connector 1 connected to the infusion line, as shown in FIG. 3, the tip portion 5 of the injection cylinder containing the liquid medicine to be mixed injected is inserted into the small-diameter cover portion 42 of the cover member 4, and The top surface 32 of the bottom tubular member 3 is pressed toward the connection space portion 23 of the connector body 2. By doing so, as described above, the mixed injection port 32 communicates with the small diameter portion 34, and the mixed injection passage including the mixed injection port 32 and the small diameter portion 34 is formed.

このとき、注射筒の先端部５は外周面に小径カバー部４２の内周面が密着することにより、小径カバー部４２に支持される。また、注射筒が、先端部５の外周側に設けられた外套筒であって内周面に雌ねじ部が形成されているロック筒（図示せず）を備えるときには、該ロック筒の雌ねじ部を小径カバー部４２の外周面に形成された雄ねじ部４３に螺合することができる。前記ロック筒の雌ねじ部を雄ねじ部４３に螺合することにより、注射筒の先端部５により天面３２をコネクタ本体２の接続空間部２３方向に押圧する動作を容易かつ確実に行うことができる。 At this time, the distal end portion 5 of the injection cylinder is supported by the small diameter cover portion 42 by the inner peripheral surface of the small diameter cover portion 42 being in close contact with the outer peripheral surface. Further, when the injection cylinder is provided with a lock cylinder (not shown) which is an outer cylinder provided on the outer peripheral side of the distal end portion 5 and has an inner peripheral surface formed with a female screw portion, the female screw portion of the lock cylinder is provided. Can be screwed into the male screw portion 43 formed on the outer peripheral surface of the small diameter cover portion 42. By screwing the female threaded portion of the lock barrel with the male threaded portion 43, the operation of pressing the top surface 32 toward the connection space portion 23 of the connector body 2 by the tip portion 5 of the injection barrel can be performed easily and reliably. ..

そして、注射筒のプランジャーをシリンダーに押し込むことにより、該注射筒に収容されている薬液等が矢示するように該注射筒の先端部５から小径部３４に注入されて、輸液ラインに対する該薬液等の混注が行われる。 Then, by pushing the plunger of the injection cylinder into the cylinder, the liquid medicine or the like contained in the injection cylinder is injected from the tip portion 5 of the injection cylinder into the small-diameter portion 34 as indicated by the arrow, and the liquid for the infusion line is Mixed injection of chemicals is performed.

前記混注の際には、可撓性を有する有底筒状部材３が注射筒の先端部５に押圧されることにより小径部３４が圧縮されており、前記薬液等は小径部３４で前記輸液等の液体と容易に混合されて、流出口２２から輸液ラインに流出することができる。 At the time of the mixed injection, the small-diameter portion 34 is compressed by the flexible bottomed tubular member 3 being pressed against the distal end portion 5 of the injection cylinder, and the medicinal solution or the like is transfused at the small-diameter portion 34. It can be easily mixed with a liquid such as, and can flow out from the outlet 22 to the infusion line.

次に、第２の態様のコネクタ１の断面形状を図３に示す。尚、図３において、第１の態様と同一の構成には同一の符号を付して詳細な説明を省略する。 Next, FIG. 3 shows a cross-sectional shape of the connector 1 of the second aspect. In FIG. 3, the same components as those in the first mode are designated by the same reference numerals and detailed description thereof will be omitted.

第２の態様のコネクタ１は、仕切り部材２５が接続空間部２３の中央よりも下流側に立設されており、仕切り部材２５の上部が大径部３３内に位置していないこと以外は、図２に示す第１の態様のコネクタ１と全く同一の構成を備えている。第２の態様のコネクタ１は、仕切り部材２５が接続空間部２３の中央よりも下流側に立設されていることにより、接続空間部２３の上流側の空間が下流側の空間よりも相対的に大きくなっている。 In the connector 1 of the second aspect, except that the partition member 25 is erected on the downstream side of the center of the connection space portion 23 and the upper portion of the partition member 25 is not located in the large diameter portion 33, It has exactly the same configuration as the connector 1 of the first aspect shown in FIG. In the connector 1 of the second aspect, since the partition member 25 is erected on the downstream side with respect to the center of the connection space portion 23, the space on the upstream side of the connection space portion 23 is relative to the space on the downstream side. Is getting bigger.

この結果、第２の態様のコネクタ１では、仕切り部材２５の表面に沿って空洞部３１に案内される前記輸液等の液体の量が多くなり、より確実に空洞部３１に前記液体を滞留させることなく、輸液ラインに流出させることができる。また、接続空間部２３の下流側の空間は上流側の空間よりも相対的に小さくなっているが、仕切り部材２５の上部が大径部３３内に位置していないので、小径部３４の先端で折り返した前記液体は容易に接続空間部２３の下流側の空間に流入することができる。 As a result, in the connector 1 of the second aspect, the amount of the liquid such as the infusion liquid guided to the cavity 31 along the surface of the partition member 25 increases, and the liquid is more reliably retained in the cavity 31. Can be drained to the infusion line without. Further, the space on the downstream side of the connection space portion 23 is relatively smaller than the space on the upstream side, but since the upper portion of the partition member 25 is not located in the large diameter portion 33, the tip of the small diameter portion 34. The liquid that has been folded back in can easily flow into the space on the downstream side of the connection space portion 23.

輸液ラインに接続した第２の態様のコネクタ１を用いて混注を行うときには、図５に示すように、混注する薬液等が収容された注射筒の先端部５をカバー部材４の小径カバー部４２に挿入し、有底筒状部材３の天面３２をコネクタ本体２の接続空間部２３方向に押圧する。そして、図３に示す第１の態様のコネクタ１の場合と同様にして、注射筒に収容されている薬液等が矢示するように該注射筒の先端部５から小径部３４に注入されて混注が行われ、該薬液等は小径部３４で前記輸液等の液体と容易に混合されて、流出口２２から輸液ラインに流出することができる。 When performing mixed injection using the connector 1 of the second aspect connected to the infusion line, as shown in FIG. 5, the small-diameter cover portion 42 of the cover member 4 is attached to the distal end portion 5 of the injection cylinder containing the drug solution to be mixed-injected. And the top surface 32 of the bottomed tubular member 3 is pressed toward the connection space portion 23 of the connector body 2. Then, in the same manner as in the case of the connector 1 of the first aspect shown in FIG. 3, the liquid medicine or the like contained in the injection cylinder is injected from the distal end portion 5 of the injection cylinder into the small diameter portion 34 as shown by the arrow. Mixed injection is performed, and the drug solution or the like is easily mixed with the liquid such as the infusion solution in the small diameter portion 34, and can flow out from the outflow port 22 to the infusion line.

次に、第３の態様のコネクタ１の断面形状を図６に示す。尚、図６において、第１の態様と同一の構成には同一の符号を付して詳細な説明を省略する。 Next, FIG. 6 shows a sectional shape of the connector 1 of the third aspect. In FIG. 6, the same components as those in the first mode are designated by the same reference numerals, and detailed description thereof will be omitted.

第３の態様のコネクタ１は、仕切り部材２５が接続空間部２３の中央よりも下流側に立設され、仕切り部材２５の上流側の表面が小径部３４の内壁と断面視において面一であり、仕切り部材２５の上部が大径部３３内に位置しておらず、接続空間部２３が上流側の内壁にコネクタ本体２の大径部３３側端面に向けて傾斜する傾斜溝部２６を備えること以外は、図２に示す第１の態様のコネクタ１と全く同一の構成を備えている。 In the connector 1 of the third aspect, the partition member 25 is erected on the downstream side with respect to the center of the connection space portion 23, and the upstream surface of the partition member 25 is flush with the inner wall of the small diameter portion 34 in a cross-sectional view. The upper portion of the partition member 25 is not located in the large diameter portion 33, and the connection space portion 23 is provided with an inclined groove portion 26 that is inclined toward the end surface on the large diameter portion 33 side of the connector body 2 on the upstream inner wall. Except for the above, the connector 1 has the same structure as the connector 1 of the first aspect shown in FIG.

第３の態様のコネクタ１では、仕切り部材２５の上流側の表面が小径部３４の内壁と断面視において面一であることにより、図６に矢示するように、仕切り部材２５の表面に沿って空洞部３１に案内される前記輸液等の液体が小径部３４に流入しやすくなり、該液体の流れは小径部３４の先端で折り返して、接続空間部２３の下流側の空間に流入する。またこのとき、小径部３４に案内される前記液体の流れの一部は、傾斜溝部２６に沿って大径部３３に案内され、大径部３３の内側面で折り返した後、接続空間部２３の下流側の空間に流入する。 In the connector 1 of the third aspect, the upstream surface of the partition member 25 is flush with the inner wall of the small-diameter portion 34 in cross-section, so that the surface of the partition member 25 is aligned as shown by the arrow in FIG. The liquid such as the infusion solution guided to the hollow portion 31 easily flows into the small diameter portion 34, the flow of the liquid is turned back at the tip of the small diameter portion 34, and flows into the space on the downstream side of the connection space portion 23. At this time, a part of the flow of the liquid guided to the small diameter portion 34 is guided to the large diameter portion 33 along the inclined groove portion 26, is folded back on the inner side surface of the large diameter portion 33, and then is connected to the connection space portion 23. Flows into the space on the downstream side of.

そこで、第３の態様のコネクタ１では、仕切り部材２５の表面に沿って小径部３４に流入し小径部３４の先端で折り返した流れにより、小径部３４に前記液体を滞留させることがなくなる一方、傾斜溝部２６に沿って大径部３３に案内され大径部３３の内側面で折り返した流れにより、大径部３３に前記液体を滞留させることがなくなる。また、傾斜溝部２６に沿って大径部３３に案内され大径部３３の内側面で折り返した流れが、小径部３４の先端で折り返した流れを接続空間部２３の下流側の空間に案内することとなり、さらに確実に空洞部３１に前記液体を滞留させることなく、輸液ラインに流出させることができる。 Therefore, in the connector 1 of the third aspect, while the liquid flows into the small diameter portion 34 along the surface of the partition member 25 and is folded back at the tip of the small diameter portion 34, the liquid is not retained in the small diameter portion 34, The flow guided by the large diameter portion 33 along the inclined groove portion 26 and turned back at the inner surface of the large diameter portion 33 prevents the liquid from staying in the large diameter portion 33. Further, the flow guided by the large diameter portion 33 along the inclined groove portion 26 and turned back at the inner surface of the large diameter portion 33 guides the flow turned back at the tip of the small diameter portion 34 to the space on the downstream side of the connection space portion 23. As a result, the liquid can be more surely allowed to flow out to the infusion line without being retained in the cavity 31.

輸液ラインに接続した第３の態様のコネクタ１を用いて混注を行うときには、図７に示すように、混注する薬液等が収容された注射筒の先端部５をカバー部材４の小径カバー部４２に挿入し、有底筒状部材３の底面をコネクタ本体２の接続空間部２３方向に押圧する。そして、図３に示す第１の態様のコネクタ１の場合と同様にして、注射筒に収容されている薬液等が矢示するように該注射筒の先端部５から小径部３４に注入されて混注が行われ、該薬液等は小径部３４で前記輸液等の液体と容易に混合されて、流出口２２から輸液ラインに流出することができる。 When mixed injection is performed using the connector 1 of the third aspect connected to the infusion line, as shown in FIG. 7, the small-diameter cover portion 42 of the cover member 4 is attached to the distal end portion 5 of the injection cylinder in which the mixed liquid or the like is stored. And presses the bottom surface of the bottomed tubular member 3 toward the connection space portion 23 of the connector body 2. Then, in the same manner as in the case of the connector 1 of the first aspect shown in FIG. 3, the liquid medicine or the like contained in the injection cylinder is injected from the distal end portion 5 of the injection cylinder into the small diameter portion 34 as shown by the arrow. Mixed injection is performed, and the drug solution or the like is easily mixed with the liquid such as the infusion solution in the small diameter portion 34, and can flow out from the outflow port 22 to the infusion line.

１…コネクタ、 ２…コネクタ本体、 ３…有底筒状部材、 ４…カバー部材、 ５…注射筒、 ２１…流入口、 ２２…流出口、 ２３…接続空間部、 ２５…仕切り部材、 ３１…空洞部、 ３２…混注口、 ３３…大径部、 ３４…小径部。 DESCRIPTION OF SYMBOLS 1... Connector, 2... Connector main body, 3... Bottomed cylindrical member, 4... Cover member, 5... Injection cylinder, 21... Inflow port, 22... Outflow port, 23... Connection space part, 25... Partition member, 31... Cavity part, 32... Mixed injection port, 33... Large diameter part, 34... Small diameter part.

次に、第２の態様のコネクタ１の断面形状を図４に示す。尚、図４において、第１の態様と同一の構成には同一の符号を付して詳細な説明を省略する。
Next, FIG. 4 shows a cross-sectional shape of the connector 1 of the second aspect. In FIG. 4 , the same components as those in the first mode are designated by the same reference numerals, and detailed description thereof will be omitted.

Claims (4)

輸液ラインの途中に接続されて該輸液ラインに対する混注に用いられるコネクタであって、
該輸液ラインから液体が流入する流入口と、液体が該輸液ラインに流出する流出口と、該流入口と該流出口とを接続する接続空間部とを備えるコネクタ本体と、
内部に該接続空間部に連通する空洞部を備える一方、底面に注射筒の先端部により該接続空間部方向に押圧されたときに該接続空間部に連通する混注口を備え、可撓性を有する倒立した有底筒状部材と、
該有底筒状部材を覆って該コネクタ本体に固定するカバー部材と、
該接続空間部に立設されて該接続空間部を上流側と下流側とに区画する仕切り部材とを備えることを特徴とするコネクタ。 A connector which is connected in the middle of an infusion line and is used for mixed injection into the infusion line,
A connector main body including an inflow port through which the liquid flows from the infusion line, an outflow port through which the liquid flows out to the infusion line, and a connection space portion that connects the inflow port and the outflow port.
A hollow portion communicating with the connecting space portion is provided inside, while a mixed injection port communicating with the connecting space portion when pressed in the direction of the connecting space portion by the distal end portion of the injection cylinder is provided on the bottom surface, thereby providing flexibility. An inverted bottomed tubular member having,
A cover member that covers the bottomed tubular member and is fixed to the connector body;
A connector comprising: a partition member that is provided upright in the connection space portion and divides the connection space portion into an upstream side and a downstream side. 請求項１記載のコネクタにおいて、前記仕切り部材は前記接続空間部の下流側に位置することを特徴とするコネクタ。 The connector according to claim 1, wherein the partition member is located on the downstream side of the connection space portion. 請求項２記載のコネクタにおいて、前記空洞部は前記接続空間部に連通する大径部と該大径部に連通し前記混注口の直下まで延在する小径部とを備え、前記仕切り部材の上流側の表面は該小径部の内壁と断面視において面一であり、該接続空間部は上流側の内壁に前記コネクタ本体の該大径部側端面に向けて傾斜する傾斜溝部を備えることを特徴とするコネクタ。 The connector according to claim 2, wherein the hollow portion includes a large diameter portion that communicates with the connection space portion and a small diameter portion that communicates with the large diameter portion and extends immediately below the mixed injection port, and is upstream of the partition member. The surface on the side is flush with the inner wall of the small diameter portion in a cross-sectional view, and the connection space portion is provided with an inclined groove portion inclined on the inner wall on the upstream side toward the end surface on the large diameter portion side of the connector body. And connector. 輸液ラインの途中に接続されて該輸液ラインに対する混注に用いられるコネクタであって、
該輸液ラインから液体が流入する流入口と、液体が該輸液ラインに流出する流出口と、該流入口と該流出口とを接続する接続空間部とを備えるコネクタ本体と、
内部に該接続空間部に連通する空洞部を備える一方、底面に注射筒の先端部により該接続空間部方向に押圧されたときに開口して該接続空間部に連通する混注口を備え、可撓性を有する倒立した有底筒状部材と、
該有底筒状部材を覆って該コネクタ本体に固定するカバー部材と、
該接続空間部に立設されて該接続空間部を上流側と下流側とに区画する仕切り部材とを備え、
該仕切り部材は上部が該空洞部内に位置することを特徴とするコネクタ。 A connector which is connected in the middle of an infusion line and is used for mixed injection into the infusion line,
A connector main body including an inflow port through which the liquid flows from the infusion line, an outflow port through which the liquid flows out to the infusion line, and a connection space portion that connects the inflow port and the outflow port.
A cavity portion communicating with the connection space portion is provided inside, and a mixed injection port that is opened at the bottom when the distal end portion of the injection cylinder is pressed in the direction of the connection space portion and communicates with the connection space portion may be provided. An inverted bottomed tubular member having flexibility,
A cover member that covers the bottomed tubular member and is fixed to the connector body;
A partition member that is provided upright in the connection space portion and divides the connection space portion into an upstream side and a downstream side,
The connector is characterized in that an upper portion of the partition member is located inside the cavity.
JP2019012537A 2019-01-28 2019-01-28 connector Pending JP2020116338A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004209278A (en) * 2002-08-06 2004-07-29 Fukai Kogyo Kk Syringe connection port
JP2008055056A (en) * 2006-09-01 2008-03-13 Nippon Sherwood Medical Industries Ltd Liquid coinfusion unit
WO2014049810A1 (en) * 2012-09-28 2014-04-03 テルモ株式会社 Connector
JP2016147077A (en) * 2016-03-16 2016-08-18 テルモ株式会社 connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004209278A (en) * 2002-08-06 2004-07-29 Fukai Kogyo Kk Syringe connection port
JP2008055056A (en) * 2006-09-01 2008-03-13 Nippon Sherwood Medical Industries Ltd Liquid coinfusion unit
WO2014049810A1 (en) * 2012-09-28 2014-04-03 テルモ株式会社 Connector
JP2016147077A (en) * 2016-03-16 2016-08-18 テルモ株式会社 connector

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