JP2011036358A - Connector of medical liquid feed circuit - Google Patents

Connector of medical liquid feed circuit Download PDF

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JP2011036358A
JP2011036358A JP2009185589A JP2009185589A JP2011036358A JP 2011036358 A JP2011036358 A JP 2011036358A JP 2009185589 A JP2009185589 A JP 2009185589A JP 2009185589 A JP2009185589 A JP 2009185589A JP 2011036358 A JP2011036358 A JP 2011036358A
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adapter
connector
circuit
tube
main circuit
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JP5592088B2 (en
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Kazuhide Ono
和秀 小野
Katsumi Iso
勝美 五十右
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Nikkiso Co Ltd
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Nikkiso Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To surely connect a body and an adapter in the connector of a main circuit and a branch circuit. <P>SOLUTION: The body 12 of the connector 10 has a tube 16 to be a part of the main circuit, and a valve part 26 is provided to the side face of the tube 16. On the side face of the tube 16, two projection receiving parts 44 having a roughly U-shaped cross section are provided to positions holding the valve part therebetween. On the side face of a cover part 48 covering the valve part of the adapter 14, two locking projections 42 are projected to the outer side of the radial direction oppositely to each other. The adapter is rotated, and the locking projections 42 are advanced into the projection receiving parts 44 from the side to hold the locking projections 42 by the projection receiving parts 44. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、患者に供給する血液、輸液等の液が流れる主回路に設けられ、主回路を流れる液に対し薬液等を注入する、または主回路を流れる液を採取する分岐回路の構成部材と主回路とを接続するための医療用送液回路の接続具に関する。   The present invention is provided in a main circuit through which a liquid such as blood or infusion supplied to a patient flows, and injects a drug solution or the like into the liquid flowing through the main circuit, or collects a liquid flowing through the main circuit; The present invention relates to a connector for a medical liquid feeding circuit for connecting a main circuit.

患者に輸液、輸血を行う場合に、これらとは異なる種類の薬液等を輸液等に注入して混ぜる（混注する）ことが行われている。また、輸液等のサンプルを採取することが行われている。また、患者の血液を体外循環させる場合においても、循環回路中に薬液等を混注すること、血液のサンプルを採取することが行われている。この際、患者に供給される輸液、血液等が流れる主回路から、薬液を供給する回路または液を採取する回路を分岐する必要がある。このために、主回路から分岐した分岐回路の構成部材と主回路とを接続する接続具が用いられている。   When transfusion or blood transfusion is performed on a patient, a different type of medicinal solution or the like is injected into the transfusion or the like and mixed (mixed injection). In addition, samples such as infusion are being collected. In addition, even when the patient's blood is circulated extracorporeally, a chemical solution or the like is mixedly injected into the circulation circuit and a blood sample is collected. At this time, it is necessary to branch a circuit for supplying a drug solution or a circuit for collecting a solution from a main circuit through which an infusion solution, blood, or the like supplied to a patient flows. For this purpose, a connector for connecting the constituent members of the branch circuit branched from the main circuit and the main circuit is used.

このような接続具の例が下記特許文献１に記載されている。この接続具は、主回路の一部となる管体の側面に、スリットが切られたゴム膜の弁体を有する弁部を設け、弁部に結合されアダプタにより主回路と分岐回路が接続されている。アダプタに備えられた管状の部材が弁体のスリットに挿入されることにより、主回路と分岐回路が連通される。   An example of such a connection tool is described in Patent Document 1 below. This connector is provided with a valve part having a rubber membrane valve element with a slit in the side surface of a pipe body which is a part of the main circuit, and the main circuit and the branch circuit are connected to the valve part by an adapter. ing. By inserting a tubular member provided in the adapter into the slit of the valve body, the main circuit and the branch circuit are communicated.

特許第４１６３８９８号明細書Japanese Patent No. 4163898

主回路と、分岐回路を接続するアダプタとを、確実に固定し、また容易に着脱したいという要求がある。本発明は、主回路とアダプタを確実に固定し、かつ容易に着脱できる接続具を提供することを目的とする。   There is a demand to securely fix the main circuit and the adapter for connecting the branch circuit and to easily attach and detach the adapter. An object of the present invention is to provide a connector that can securely fix a main circuit and an adapter and can be easily attached and detached.

本発明に係る医療用送液回路の接続具は、患者体内に送られる液が流れる主回路に設けられ、主回路を流れる液に対し別の液を注入する、または主回路を流れる液を採取するための分岐回路の構成部材と主回路とを接続するための医療用送液回路の接続具であって、主回路の一部となる管体と、管体の側面に設けられた弁部と、管体に結合されたとき弁部を開いて主回路と分岐回路とを接続するアダプタとを含む。アダプタは、前記分岐回路の構成部材と接続する管形状の接続部と、弁部を覆うカバー部とを含み、さらに、カバー部から外側に、互いに反対方向に突出する対をなす係止突起を有する。一方、管体は、その側面に弁部を挟んで管体の軸方向に対をなして配置されて前記アダプタの係止突起を管体の径方向外側より押さえて、これを保持する突起受け部を有する。   A connector for a medical liquid supply circuit according to the present invention is provided in a main circuit through which a liquid to be sent into a patient flows, and injects another liquid into the liquid flowing through the main circuit or collects a liquid flowing through the main circuit. A connecting device for a medical liquid supply circuit for connecting a component of a branch circuit to the main circuit and a valve body provided as a part of the main circuit and a side surface of the tube And an adapter that opens the valve part when connected to the tube and connects the main circuit and the branch circuit. The adapter includes a tube-shaped connecting portion that connects to the constituent member of the branch circuit, and a cover portion that covers the valve portion, and further includes a pair of locking protrusions that protrude outwardly from the cover portion in opposite directions. Have. On the other hand, the tubular body is arranged in a pair in the axial direction of the tubular body with a valve portion sandwiched between the side surfaces thereof, and a projection receiver that holds the adapter by pressing the locking projection of the adapter from the radially outer side of the tubular body. Part.

弁部が設けられた管体側面は、周囲の管体側面から窪んだ平面とすることができ、この平面と管体側面とにより形成された段付き部に、突起受け部を設けることができる。   The tubular body side surface provided with the valve portion can be a flat surface that is recessed from the surrounding tubular body side surface, and a projection receiving portion can be provided on the stepped portion formed by this flat surface and the tubular body side surface. .

また、アダプタは、回転することにより係止突起が突起受け部に挿入されて、管体に結合されるものとすることができる。   In addition, the adapter may be configured such that when the adapter rotates, the locking projection is inserted into the projection receiving portion and coupled to the tubular body.

さらに、アダプタのカバー部周囲の係止突起の間の部分に、アダプタを指で把持するための、平面または周方向においてやや窪んだ頂面を有する、対をなす把持用膨出部を設けることができる。   Furthermore, a pair of bulging portions for gripping having a top surface slightly depressed in the plane or circumferential direction for gripping the adapter with a finger is provided at a portion between the locking projections around the adapter cover portion. Can do.

アダプタのカバー部から外側に突出した係止突起と、管体側面に弁部を挟んで単体軸方向に対をなすようにして配置された突起受け部を係合させることにより、管体とアダプタを安定して結合することができる。   By engaging the locking projection protruding outward from the cover portion of the adapter and the projection receiving portion arranged in a single axial direction with the valve portion sandwiched between the side surfaces of the tube body, the tube body and the adapter Can be stably bonded.

本実施形態の医療用送液回路の接続具の外観斜視図であり、本体とアダプタが分離した状態を示す図である。It is an external appearance perspective view of the connection tool of the medical liquid feeding circuit of this embodiment, and is a figure showing the state where a main part and an adapter separated. 本実施形態の医療用送液回路の接続具の外観斜視図であり、本体とアダプタが結合した状態を示す図である。It is an external appearance perspective view of the connection tool of the medical liquid feeding circuit of this embodiment, and is a figure showing the state where the main part and the adapter were combined. 接続具の本体の断面図である。It is sectional drawing of the main body of a connection tool. 接続具のアダプタの断面図である。It is sectional drawing of the adapter of a connection tool. アダプタを本体に結合する際の動作説明図である。It is operation | movement explanatory drawing at the time of couple | bonding an adapter to a main body. 分岐回路の一例であるシリンジを示す図である。It is a figure which shows the syringe which is an example of a branch circuit. シリンジ先端の拡大図である。It is an enlarged view of a syringe front-end | tip. シリンジをアダプタに結合する際の動作説明図である。It is operation | movement explanatory drawing at the time of couple | bonding a syringe with an adapter.

以下、本発明の実施形態を、図面に従って説明する。図１および図２は、本実施形態の医療用送液回路の接続具１０の外観斜視図である。図１は、主回路の一部となる本体１２と、分岐回路を主回路に接続するためのアダプタ１４が分離された状態を示し、図２は、本体１２とアダプタ１４が結合された状態を示す。また、図３は、管体１６の軸線に沿った断面図、図４は、アダプタの軸線に沿った断面図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are external perspective views of the connector 10 of the medical liquid feeding circuit of the present embodiment. FIG. 1 shows a state where a main body 12 which is a part of a main circuit and an adapter 14 for connecting a branch circuit to the main circuit are separated, and FIG. 2 shows a state where the main body 12 and the adapter 14 are combined. Show. 3 is a cross-sectional view along the axis of the tube body 16, and FIG. 4 is a cross-sectional view along the axis of the adapter.

接続具１０は、患者に血液や輸液を供給する、または患者の血液を体外循環させる送液回路の主回路に分岐回路を接続するための器具（いわゆる混注管）である。分岐回路は、例えばシリンジであり、主回路に薬液等を混注したり、主回路から血液等を採取したりするのに用いられる。本体１２は、管体１６を含み、管体１６の両端１８，２０は開口し、主回路に接続されている。つまり、管体１６は主回路の一部を構成している。管体１６は、全体として円管形状であるが、側面に、外周面を削りとって形成したような、つまり円管の外側側面より窪んだ平面部２２を有している。この平面部２２のほぼ中央に、開口２４が形成されている（図３参照）。開口２４には弁部２６が設けられ、この弁部２６により分岐回路を接続しない場合には、開口２４は閉じられる。開口２４の周囲には、これを囲むように環状壁２８が設けられている。環状壁２８の内側に嵌るように弁体３０が配置されている。弁体３０は、ゴム等の弾性体で構成され、中央にスリット３２が切られている。キャップ３４は、環状壁２８を取り囲み、かつ弁体３０を図中の上方から押さえることによって、弁体３０を保持する。キャップ３４の外周は略円筒面となっている。キャップ３４の中央には、すり鉢状の窪み３６が設けられており、この窪みの底が開口し、弁体３０が露出している。窪みの開口の縁は先細に形成され、弁体３０との上面の段差が極力小さくなるようにされている。これにより、弁体３０の表面についた薬液等の液を拭うときに、拭き残しが少なくなる。弁体のスリット３２は、分岐回路が接続されない場合には、図１に示されるようにスリットが閉じ、開口２４を閉止している。   The connection tool 10 is an instrument (so-called mixed injection tube) for connecting a branch circuit to a main circuit of a liquid supply circuit that supplies blood or infusion to a patient or circulates blood of the patient extracorporeally. The branch circuit is, for example, a syringe, and is used to mix a chemical solution or the like into the main circuit or collect blood or the like from the main circuit. The main body 12 includes a tubular body 16, and both ends 18 and 20 of the tubular body 16 are opened and connected to the main circuit. That is, the tubular body 16 constitutes a part of the main circuit. Although the tubular body 16 has a circular tube shape as a whole, the tubular body 16 has a flat surface portion 22 formed on the side surface by cutting off the outer peripheral surface, that is, recessed from the outer side surface of the circular tube. An opening 24 is formed substantially at the center of the flat portion 22 (see FIG. 3). A valve portion 26 is provided in the opening 24, and when the branch circuit is not connected by the valve portion 26, the opening 24 is closed. An annular wall 28 is provided around the opening 24 so as to surround it. The valve body 30 is disposed so as to fit inside the annular wall 28. The valve body 30 is comprised with elastic bodies, such as rubber | gum, and the slit 32 is cut in the center. The cap 34 surrounds the annular wall 28 and holds the valve body 30 by pressing the valve body 30 from above in the drawing. The outer periphery of the cap 34 has a substantially cylindrical surface. A mortar-shaped depression 36 is provided at the center of the cap 34, and the bottom of the depression opens to expose the valve element 30. The edge of the opening of the dent is tapered so that the step on the upper surface with the valve body 30 is as small as possible. Thereby, when wiping liquids, such as a chemical | medical solution, which adhered to the surface of the valve body 30, wiping remaining is reduced. When the branch circuit is not connected to the slit 32 of the valve body, the slit is closed and the opening 24 is closed as shown in FIG.

管体側面に形成された平面部２２は、その管体軸線方向の両端において、管体外周の円筒面と段差が付けられている。この段差部分には、管体１６の外周円筒面が延長された押さえ突起３８が設けられ、この押さえ突起３８と平面部２２と段差面４０とにより略コの字形が形成される。この部分が、後述するアダプタの係止突起４２と係合する突起受け部４４となる。段差面４０は、管体１６の軸線に直交する平面内に形成される。   The flat portion 22 formed on the side surface of the tubular body is stepped from the cylindrical surface on the outer periphery of the tubular body at both ends in the tubular body axial direction. The stepped portion is provided with a pressing projection 38 in which the outer peripheral cylindrical surface of the tube body 16 is extended. The pressing projection 38, the flat portion 22, and the stepped surface 40 form a substantially U-shape. This portion becomes a projection receiving portion 44 that engages with a locking projection 42 of the adapter described later. The step surface 40 is formed in a plane orthogonal to the axis of the tubular body 16.

アダプタ１４は、分岐配管に接続される管状部４６と、キャップ３４を覆う形状のカバー部４８とを有する。管状部４６は、本実施形態においては直線的な円管形状であるが、直角または他の角度に屈曲した管でもよく、断面も円形でなくてもよい。管状部４６は二重管として形成され、外管５０は、カバー部４８と一体に形成されている。外管５０とカバー部４８は別々に形成した後、結合してもよい。内管（フロート）５２は、外管５０の内側に、外管５０に対し軸線方向にスライドするように設けられている。内管５２の内周面は、異なる内径を有する部分を軸方向に有する段付き形状となっている。内径の大きい方が分岐回路に接続される側に配置されている。アダプタ１４を本体１２に結合した状態で、内管５２に分岐回路の構成部材（例えば、シリンジ）を差し込み、段付き部分に構成部材の先端と当接させて、内管５２を更に押し込むと、内管５２はスライドし、弁体３０に当接し、スリット３２を押し開く。これにより、主回路と分岐回路が接続される。管状部４６の外周面には２条の螺旋条５３が形成されている。この螺旋条５３も、分岐回路の構成部材との結合に利用されるものであり、その利用については後述する。   The adapter 14 includes a tubular portion 46 connected to the branch pipe and a cover portion 48 shaped to cover the cap 34. The tubular portion 46 has a straight circular tube shape in this embodiment, but may be a tube bent at a right angle or another angle, and the cross section may not be circular. The tubular portion 46 is formed as a double tube, and the outer tube 50 is formed integrally with the cover portion 48. The outer tube 50 and the cover portion 48 may be formed separately and then combined. The inner pipe (float) 52 is provided inside the outer pipe 50 so as to slide in the axial direction with respect to the outer pipe 50. The inner peripheral surface of the inner tube 52 has a stepped shape having portions having different inner diameters in the axial direction. The one with the larger inner diameter is arranged on the side connected to the branch circuit. In a state where the adapter 14 is coupled to the main body 12, a component member (for example, a syringe) of a branch circuit is inserted into the inner tube 52, the tip of the component member is brought into contact with the stepped portion, and the inner tube 52 is further pushed in, The inner tube 52 slides, contacts the valve body 30, and pushes the slit 32 open. Thereby, the main circuit and the branch circuit are connected. Two spiral strips 53 are formed on the outer peripheral surface of the tubular portion 46. This spiral strip 53 is also used for coupling with the constituent members of the branch circuit, and its use will be described later.

カバー部４８の側面は、キャップ３４の外周に沿う円弧部５４と、円弧部５４を延長した円弧より外側に張り出して、または膨らんで飛び出した２個の膨出部５６を有する。円弧部５４からは、径方向外側に向けて係止突起４２が突出して設けられている。係止突起４２は、２個設けられ、管状部４６の軸線（以下、アダプタの軸線と記す）に関し、互いに反対方向に突出している。２個の膨出部５６と２個の係止突起４２は、周方向において交互に配置される。前述したように、係止突起４２は、管体１６に設けられた略コの字形の突起受け部４４に受け入れられ、押さえ突起３８により管体１６の軸線に関し径方向外側から支持される。係止突起４２の頂面５８は、アダプタ１４の一つの直径に対し直交する面であり、係止突起４２の側面の少なくとも一方は斜面６０である。この頂面５８と斜面６０については、後に詳述する。膨出部５６の頂面６２は、平面であるか、または周方向においてやや窪んだ凹面である。この頂面６２は、アダプタ１４を本体１２に結合するとき、指で把持するのに用いられる。   The side surface of the cover portion 48 includes an arc portion 54 that extends along the outer periphery of the cap 34, and two bulge portions 56 that protrude outward from the arc that extends the arc portion 54 or bulge out. From the circular arc part 54, the latching protrusion 42 protrudes toward the radial direction outer side. Two locking projections 42 are provided and project in opposite directions with respect to the axis of the tubular portion 46 (hereinafter referred to as the axis of the adapter). The two bulging portions 56 and the two locking projections 42 are alternately arranged in the circumferential direction. As described above, the locking protrusion 42 is received by the substantially U-shaped protrusion receiving portion 44 provided on the tube body 16, and is supported from the radially outer side with respect to the axis of the tube body 16 by the pressing protrusion 38. The top surface 58 of the locking projection 42 is a surface orthogonal to one diameter of the adapter 14, and at least one of the side surfaces of the locking projection 42 is a slope 60. The top surface 58 and the slope 60 will be described in detail later. The top surface 62 of the bulging portion 56 is a flat surface or a concave surface that is slightly depressed in the circumferential direction. The top surface 62 is used to hold the adapter 14 with a finger when the adapter 14 is coupled to the main body 12.

図５は、アダプタ１４を本体１２に結合する際の動作を説明するための図である。図５（ａ）〜（ｃ）の各図の右側の図は、アダプタの軸線方向であって図１の上方より見た図である。左側の図は、突起受け部の段差面４０の図３における上下方向のほぼ中央部分を通る断面を示す図であり、アダプタ１４の内部構造については省略して示している。アダプタ１４を弁部２６に被せる際には、アダプタのカバー部４８の係止突起４２と膨出部５６の間に、押さえ突起３８が位置するようにアダプタを位置合わせする。これにより、係止突起４２を、突起受け部４４の押さえ突起３８より奥に、つまり図３において下方に送り込むことができる。このとき、係止突起４２の側面である斜面６０は、突起受け部４４の段差面４０に接していない。図５（ａ）の状態から、アダプタ１４を時計回りに回転させると、斜面６０が段差面４０に当接し、更に斜面６０と頂面５８の交点である角部６４が段差面４０に当接する。さらに、アダプタ１４を回転させると、この角部６４が２つの段差面４０の間隔を押し広げる方向に管体１６を変形させる（図５（ｂ）参照）。また、この反作用としてアダプタ１４は押し縮められる。アダプタ１４と管体１６の少なくとも一方は、このような変形を許容する材料、例えば合成樹脂で形成されている。さらに、段差面４０と係止突起の頂面５８がほぼ平行となるまで、または斜面６０側の角部６４の反対側の角部６５が段差面４０に当接するまでアダプタ１４を回転させる（図５（ｃ）参照）。このように、アダプタ１４を回転させることにより、係止突起４２を突起受け部４４内に挿入することができ、アダプタ１４が本体１２に結合された状態となる。頂面５８と段差面４０は、平面で構成されてよい。また、必ずしも平面でなくてもよく例えば頂面５８は、アダプタ軸線を含む断面において円弧となる円柱面の一部として形成されてもよい。図５（ｃ）に示す状態で、突起受け部４４が係止突起４２を収容し、これを保持して、本体１２とアダプタ１４が結合される。なお、この結合状態において、アダプタ１４を反時計回りに回転させることによって、アダプタ１４を本体１２から容易に取り外すことができる。   FIG. 5 is a diagram for explaining an operation when the adapter 14 is coupled to the main body 12. 5A to 5C are diagrams on the right side in the axial direction of the adapter as viewed from above in FIG. The figure on the left side is a diagram showing a cross section passing through a substantially central portion in the vertical direction in FIG. 3 of the stepped surface 40 of the projection receiving portion, and the internal structure of the adapter 14 is omitted. When the adapter 14 is put on the valve portion 26, the adapter is positioned so that the pressing projection 38 is positioned between the locking projection 42 and the bulging portion 56 of the cover portion 48 of the adapter. As a result, the locking protrusion 42 can be sent to the back of the pressing protrusion 38 of the protrusion receiving portion 44, that is, downward in FIG. At this time, the slope 60 which is the side surface of the locking projection 42 is not in contact with the step surface 40 of the projection receiving portion 44. When the adapter 14 is rotated clockwise from the state of FIG. 5A, the inclined surface 60 comes into contact with the step surface 40, and the corner portion 64 that is the intersection of the inclined surface 60 and the top surface 58 comes into contact with the step surface 40. . Further, when the adapter 14 is rotated, the corner portion 64 deforms the tubular body 16 in a direction that widens the distance between the two step surfaces 40 (see FIG. 5B). Further, as a reaction, the adapter 14 is compressed. At least one of the adapter 14 and the tube 16 is formed of a material that allows such deformation, for example, a synthetic resin. Further, the adapter 14 is rotated until the step surface 40 and the top surface 58 of the locking projection are substantially parallel or until the corner portion 65 on the opposite side of the corner portion 64 on the slope 60 side contacts the step surface 40 (see FIG. 5 (c)). Thus, by rotating the adapter 14, the locking protrusion 42 can be inserted into the protrusion receiving portion 44, and the adapter 14 is coupled to the main body 12. The top surface 58 and the step surface 40 may be configured as a plane. The top surface 58 may not necessarily be a flat surface, for example, and may be formed as a part of a cylindrical surface that forms an arc in a cross section including the adapter axis. In the state shown in FIG. 5C, the projection receiving portion 44 accommodates and holds the locking projection 42, and the main body 12 and the adapter 14 are coupled. In this connection state, the adapter 14 can be easily detached from the main body 12 by rotating the adapter 14 counterclockwise.

以上のように、接続具１０の本体１２とアダプタ１４の結合は、弁部２６よりも外側の位置で、管体１６とアダプタ１４を結合することにより達成される。したがって、管体１６に対し、アダプタ１４をより確実に固定することができる。また、アダプタ１４を固定する際、弁体３０に余計なストレスが掛かることが防止される。なお、アダプタ１４を装着しない場合でも、閉じた状態の弁体３０に対して、直接シリンダを押し当てることにより、採血や薬液注入を行うことが可能である。   As described above, the connection between the main body 12 of the connector 10 and the adapter 14 is achieved by connecting the tube body 16 and the adapter 14 at a position outside the valve portion 26. Therefore, the adapter 14 can be more reliably fixed to the tube body 16. Further, when the adapter 14 is fixed, unnecessary stress is prevented from being applied to the valve body 30. Even when the adapter 14 is not attached, it is possible to collect blood or inject chemicals by directly pressing the cylinder against the valve body 30 in the closed state.

図６および図７には、分岐回路の構成部材としてのシリンジ６６が示されている。シリンジ６６は、シリンダ６８とシリンダ内を摺動するピストン７０を有する。シリンダ６８の先端部分には、ピストンが摺動する胴部より細い先端部７２を有する。先端部７２には、アダプタ１４と結合するための結合スリーブ７４が固定されている。結合スリーブ７４は、先端部７２と間隔が開いている内周面を有し、内周面に２条の螺旋条７６が設けられている。   6 and 7 show a syringe 66 as a component of the branch circuit. The syringe 66 has a cylinder 68 and a piston 70 that slides in the cylinder. The tip of the cylinder 68 has a tip 72 that is narrower than the barrel on which the piston slides. A coupling sleeve 74 for coupling with the adapter 14 is fixed to the distal end portion 72. The coupling sleeve 74 has an inner peripheral surface that is spaced from the distal end portion 72, and two spiral strips 76 are provided on the inner peripheral surface.

図８は、シリンジ６６をアダプタ１４に結合させる際の動作説明図である。まず、図８（ａ）に示すように、シリンダの先端部７２をアダプタの管状部４６の内管５２内に挿入する。次に結合スリーブ７４をシリンダ６８と共に時計回りに回転させると、外管外周面の螺旋条５３と結合スリーブ内周面の螺旋条７６とがねじ結合し、結合スリーブ７４はシリンダ６８を伴って図８中下方に移動する。このとき、内管５２の段付き部分にシリンダの先端部７２が当接し、内管５２を押し込む。内管５２は、下方に移動し、弁部２６の弁体３０に当接し、スリット３２を押し開くようにして、挿入される。これにより、シリンダ６８内と管体１６内の流路が連通する。この状態でピストン７０を引けば、主回路を流れる液をシリンダ６８内に吸引し、サンプルを採取することができる。また、予めシリンダ６８内に薬液等を入れておき、アダプタと結合後にピストンを押せば、主回路に薬液等を供給することができる。   FIG. 8 is an operation explanatory diagram when the syringe 66 is coupled to the adapter 14. First, as shown in FIG. 8 (a), the tip 72 of the cylinder is inserted into the inner tube 52 of the tubular portion 46 of the adapter. Next, when the coupling sleeve 74 is rotated clockwise together with the cylinder 68, the spiral strip 53 on the outer peripheral surface of the outer tube and the spiral strip 76 on the inner peripheral surface of the coupling sleeve are screw-coupled. 8 Move down in the middle. At this time, the tip 72 of the cylinder comes into contact with the stepped portion of the inner tube 52 and pushes the inner tube 52. The inner tube 52 moves downward, contacts the valve body 30 of the valve portion 26, and is inserted so as to push open the slit 32. Thereby, the flow path in the cylinder 68 and the pipe body 16 communicate. If the piston 70 is pulled in this state, the liquid flowing through the main circuit can be sucked into the cylinder 68 and a sample can be collected. Further, if a chemical solution or the like is put in the cylinder 68 in advance and the piston is pushed after coupling with the adapter, the chemical solution or the like can be supplied to the main circuit.

分岐回路は、上記のシリンダに限らず、薬液や輸液を収容したバックより薬液を導くパイプまたはチューブであってもよい。このパイプまたはチューブ先端に、上記の結合スリーブ７４と同様のスリーブを設けて、アダプタ１４と結合するようにできる。   The branch circuit is not limited to the above-described cylinder, and may be a pipe or tube that guides the chemical solution from the bag containing the chemical solution or the infusion solution. A sleeve similar to the above-described coupling sleeve 74 can be provided at the end of the pipe or tube so as to couple with the adapter 14.

１０ 接続具、１２ 本体、１４ アダプタ、１６ 管体、２４ 開口、２６ 弁部、３０ 弁体、３２ スリット、３４ キャップ、３８ 押さえ突起、４０ 段差面、４２ 係止突起、４４ 突起受け部、４６ 管状部、４８ カバー部、５４ 円弧部、５６ 膨出部。   DESCRIPTION OF SYMBOLS 10 Connector, 12 Main body, 14 Adapter, 16 Pipe body, 24 Opening, 26 Valve part, 30 Valve body, 32 Slit, 34 Cap, 38 Pressing protrusion, 40 Step surface, 42 Locking protrusion, 44 Projection receiving part, 46 Tubular part, 48 cover part, 54 arc part, 56 bulge part.

Claims (4)

患者体内に送られる液が流れる主回路に設けられ、主回路を流れる液に対し別の液を注入する、または主回路を流れる液を採取するための分岐回路の構成部材と主回路とを接続するための医療用送液回路の接続具であって、
主回路の一部となる管体と、
管体の側面に設けられた弁部と、
前記分岐回路の構成部材と接続する管形状の接続部と、弁部を覆うカバー部とを含み、管体に結合されたとき弁部を開いて主回路と分岐回路とを接続するアダプタと、
を有し、
アダプタは、さらに、カバー部から外側に、互いに反対方向に突出する対をなす係止突起を有し、
管体は、その側面に弁部を挟んで管体の軸方向に対をなして配置されて前記アダプタの係止突起を管体の径方向外側より押さえて、これを保持する突起受け部を有する、
医療用送液回路の接続具。 Connected to the main circuit and the components of the branch circuit for injecting another liquid into the main circuit or collecting the liquid flowing through the main circuit. A connector for a medical liquid delivery circuit for
A tube that is part of the main circuit;
A valve provided on the side of the tube,
An adapter for connecting the main circuit and the branch circuit by opening the valve portion when coupled to the pipe body, including a tube-shaped connection portion connected to the constituent members of the branch circuit, and a cover portion covering the valve portion;
Have
The adapter further includes a pair of locking projections protruding outward from the cover portion in opposite directions,
The tubular body is arranged in a pair in the axial direction of the tubular body with the valve portion sandwiched between the side surfaces thereof, and a projection receiving portion for holding the adapter is pressed from the radially outer side of the tubular body to hold the adapter. Have
A connector for medical fluid delivery circuits. 請求項１に記載の医療用送液回路の接続具であって、
弁部が設けられた管体側面は、周囲の管体側面から窪んだ平面であり、突起受け部は、この窪んだ面の端の段付き部に設けられている、
医療用送液回路の接続具。 A connector for a medical liquid delivery circuit according to claim 1,
The tubular body side surface on which the valve portion is provided is a flat surface recessed from the surrounding tubular body side surface, and the protrusion receiving portion is provided at a stepped portion at the end of the recessed surface.
A connector for medical fluid delivery circuits. 請求項１または２に記載の医療用送液回路の接続具であって、
アダプタは、回転することにより係止突起が突起受け部に挿入されて、管体に結合される、
医療用送液回路の接続具。 A connector for a medical liquid feeding circuit according to claim 1 or 2,
When the adapter rotates, the locking projection is inserted into the projection receiving portion and coupled to the tube body.
A connector for medical fluid delivery circuits. 請求項３に記載の医療用送液回路の接続具であって、アダプタのカバー部周囲の係止突起の間の部分には、アダプタを指で把持するための、平面またはやや窪んだ凹面である頂面を有する、対をなす把持用膨出部が設けられている、医療用送液回路の接続具。   It is a connector of the medical liquid feeding circuit of Claim 3, Comprising: The part between the latching protrusions around the cover part of an adapter is a plane or a slightly depressed concave surface for grasping an adapter with a finger. A connector for a medical liquid supply circuit, wherein a pair of grasping bulges having a top surface is provided.
JP2009185589A 2009-08-10 2009-08-10 Medical fluid delivery circuit connector Active JP5592088B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013180048A (en) * 2012-03-01 2013-09-12 Jms Co Ltd Channel connection device having improper connection preventing function, nutrient container, and liquid feeding circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003175115A (en) * 2001-10-01 2003-06-24 Hanako Medical Kk Needle-less locking type mixing and injecting tube
JP2004033360A (en) * 2002-07-01 2004-02-05 Fukai Kogyo Kk Syringe connection port for infusion
JP2006150041A (en) * 2004-10-28 2006-06-15 Nipro Corp Connecting tool for mixed injection
JP4163898B2 (en) * 2002-05-23 2008-10-08 日機装株式会社 Locking connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003175115A (en) * 2001-10-01 2003-06-24 Hanako Medical Kk Needle-less locking type mixing and injecting tube
JP4163898B2 (en) * 2002-05-23 2008-10-08 日機装株式会社 Locking connector
JP2004033360A (en) * 2002-07-01 2004-02-05 Fukai Kogyo Kk Syringe connection port for infusion
JP2006150041A (en) * 2004-10-28 2006-06-15 Nipro Corp Connecting tool for mixed injection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013180048A (en) * 2012-03-01 2013-09-12 Jms Co Ltd Channel connection device having improper connection preventing function, nutrient container, and liquid feeding circuit

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