JP2014050525A - Connector valve element and connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector having both of sealability by initial sealing and re-sealing properties and injection easiness, and a connector valve element contributing to the sealability and the injection easiness of the connector.SOLUTION: A connector 1 comprises a connector valve element 7 and a connector tube 5. The connector valve element 7 includes a valve body 21 disposed in a first connection port 12 and having an inverse truncated cone-shaped seal part 31; a support body 22 juxtaposed to the valve body 21 apart therefrom; at least one high-expansion/contraction support part 23 that connects the valve body 21 and the support body 22 and supports the valve body 21; and at least one low-expansion/contraction support part 24 that connects the valve body 21 and the support body 22 at a position distal to the seal part 31 with respect to the high-expansion/contraction part 23 in the axial direction of the valve body 21 and apart from the high-expansion/contraction support part 23, and that supports the valve body 21. The connector tube 5 includes: at least two connection ports 12-14 capable of connecting the connector valve element 7 and a tube body; and an inner channel 15 that communicates the connection ports 12-15.

Description

Translated fromJapanese

この発明は、コネクタ用弁体及びコネクタに関し、さらに詳しくは、初期シール及び再シール性による密閉性と注入容易性とを兼ね備えたコネクタ並びにコネクタの密閉性及び注入容易性に貢献するコネクタ用弁体に関する。  TECHNICAL FIELD The present invention relates to a connector valve body and a connector, and more specifically, a connector having both sealing performance and initial injection performance and ease of injection, and a connector valve body that contributes to the sealing performance and ease of injection of the connector. About.

少なくとも２つの管体同士を接続するコネクタには種々のものが知られているが、例えば、医療用コネクタが挙げられる。医療用コネクタは、例えば、患者に留置されたカテーテル等を介して患者に必要な薬液、体液、栄養剤等（この発明において流体と称する。）を投与する静脈内投与又は輸血等に用いられるコネクタ、具体的には注入管、１つの管体に接続された第１の流体とは異なる種類又は濃度の第２の流体を同様にして患者に静脈内投与する場合に用いられるコネクタ、具体的には混注管等が挙げられる。  Various connectors for connecting at least two tube bodies are known, and examples thereof include a medical connector. The medical connector is, for example, a connector used for intravenous administration, blood transfusion, or the like for administering a medical solution, a body fluid, a nutrient, or the like (referred to as a fluid in this invention) necessary for a patient via a catheter or the like placed in the patient. Specifically, an infusion tube, a connector used when intravenously administering to a patient a second fluid of a different type or concentration from the first fluid connected to one tube body, specifically Is a mixed injection tube.

従来、混注管等の医療用コネクタに第２の流体を注入するのに注射針を備えた注射器等を用いていたが、医療従事者の針刺しによる感染を未然に回避するために、近年、このような注射器に代えて、注射針を備えていない注射器等の管体、例えば、ルアーロック付きシリンジ、ルアーロック付き輸液管等が医療用コネクタに接続する管体として用いられるようになっている。  Conventionally, a syringe equipped with an injection needle has been used to inject the second fluid into a medical connector such as a mixed injection tube. However, in order to avoid infection due to needle stick of a medical worker, Instead of such a syringe, a tube body such as a syringe that does not include an injection needle, for example, a syringe with a luer lock, an infusion tube with a luer lock, and the like are used as a tube body connected to a medical connector.

このような注射針を備えていない管体を接続可能又は使用可能な医療用コネクタとして、例えば、特許文献１には「雄ルアーが分離可能に接続される医療用弁であって、上下両端が開口する中空状のハウジングと、弾性変形可能な弾性シールを有し、ハウジングは、ハウジングの上部を構成する本体と、ハウジングの下部を構成し且つ本体の下端部に接続された接続体を有し、本体内の上部が、雄ルアーのチップが挿脱自在に挿入される接続口とされ、本体内における、接続口の下方に、下方に向かうに従って内径が大となる拡大部が設けられ、接続体の上端部は、Ａ．接続口の真下に位置する部分と、Ｂ．接続口の真下からずれた位置に形成され、拡大部内部と接続体内部を連通させる貫通孔を有し、弾性シールは、イ．その上部を構成し、接続口内に嵌合されると共に、上端面に、上方及び径方向外方に開口する液体移送路が形成された封止部と、ロ．封止部の下方に配設され、下方に向かうに従って、外径及び内径が大となる中空状とされて、下端で開口すると共に、拡大部に対して開口する通過孔が貫通形成され、拡大部に対向する全面において拡大部内面と密着するように拡大部内に嵌合されて、拡大部を閉鎖する膜部を有し、雄ルアーのチップにより、弾性シールの封止部が下方に押圧されて、弾性シールの膜部が下方に弾性変形し、膜部における、通過孔を含む上部側が拡大部から離間して、封止部の液体移送路が、拡大部の内部及び通過孔を介して、膜部の内部と連通する医療用弁」が記載されている（請求項１）。  As a medical connector capable of connecting or using a tube body that does not include such an injection needle, for example,Patent Document 1 discloses a “medical valve to which a male luer is detachably connected, and upper and lower ends thereof are connected to each other. It has a hollow housing that opens, and an elastic seal that can be elastically deformed. The housing has a main body that forms the upper part of the housing, and a connecting body that forms the lower part of the housing and is connected to the lower end of the main body. The upper part in the main body is a connection port into which the male luer tip is removably inserted, and an enlarged part having an inner diameter that increases in the downward direction is provided below the connection port in the main body. The upper end of the body is formed at a position located directly below the A. connection port and B. a position shifted from just below the connection port, and has a through hole that allows the inside of the enlarged portion and the inside of the connection body to communicate with each other. Is composed of the upper part A sealing portion that is fitted in the connection port and that has a liquid transfer path that opens upward and radially outwardly on the upper end surface thereof; b. The outer diameter and the inner diameter of the hollow portion are large, open at the lower end, and have a through hole that opens to the enlarged portion so that the entire surface facing the enlarged portion is in close contact with the inner surface of the enlarged portion. It has a membrane part that fits in the enlarged part and closes the enlarged part, and the male luer tip presses the sealing part of the elastic seal downward, and the elastic seal film part elastically deforms downward, `` Medical valve in which the upper side including the passage hole in the membrane part is separated from the enlarged part, and the liquid transfer path of the sealing part communicates with the inside of the enlarged part and the inside of the membrane part via the passage hole '' (Claim 1).

特許文献２には、概略、「キャップ１４及び本体１６を有するハウジング１０と、軸孔にピン２４が内装され、先端近傍の周面にワイパーシール２５を有する可動ピストン１８と、前記ピストン１８に一体的に形成されて付勢する、数個の貫通孔を有する略円形の伸縮性エレメント２０とを備えた針無しアクセス装置１０」が記載されている（第２欄〜第３欄及び欄第１図〜第７図）。  Patent Document 2 generally describes, “a housing 10 having acap 14 and amain body 16, a movable piston 18 having apin 24 in a shaft hole and having a wiper seal 25 on a peripheral surface near the tip, and the piston 18. A needleless access device 10 with a substantially circular stretchable element 20 having several through-holes that is formed and energized automatically (columns 2 to 3 and column 1). Fig. 7).

特許文献３には、概略、「頂面８２に少なくとも１つの突起９４を有する上部８８と、上部８８よりも大径の下部９０と、下端８６からその周方向に等間隔でループ状に配置され、実質的に等しい張力をそれぞれ付与する複数の可撓性バンド９８とを有するバルブエレメント８０を備えた流体制御弁」が記載されている（第６欄第１２行〜同欄第４２行及び第４図等）。  In Patent Document 3, there is an outline “an upper portion 88 having at least one protrusion 94 on thetop surface 82, a lower portion 90 having a larger diameter than the upper portion 88, and a lower end 86 arranged in a loop at equal intervals in the circumferential direction. , A fluid control valve comprising a valve element 80 having a plurality of flexible bands 98 each applying substantially equal tension ”(column 6,line 12 to column 42, and line 42). 4).

特許文献４の「コネクタ」は、概略、「軸線に沿って延在するハウジングと、このハウジングに内蔵され、ハウジングの基端に配置された弁座を密閉する第１姿勢及び自身の軸線がハウジングの軸線からずれた第２姿勢に変形する弁要素と」を含んでいる（請求項１、第９欄第１９行〜同第３４行、図１２等）。  The “connector” of Patent Document 4 is roughly described as “a housing extending along an axis, a first posture for sealing a valve seat built in the housing and disposed at a base end of the housing, and its own axis is a housing. And a valve element that is deformed to a second posture deviated from the axis of the first line ”(claim 1, ninth column, line 19 to line 34, FIG. 12, etc.).

特許第４４３２３３９号公報Japanese Patent No. 4432339米国特許第５３６０４１３号明細書US Pat. No. 5,360,413米国特許第５４６２２５５号明細書US Pat. No. 5,462,255米国特許第５７８２８１６号明細書US Pat. No. 5,782,816

このような医療用コネクタは、例えばコネクタ用弁体の伸縮移動及び／又は伸縮変形によって開放状態と閉塞状態とを移行し、所望の流体が注入されるようになっている。したがって、医療コネクタには、接続口を常時液密にシールする初期シール性及び注入投与後に再度接続口を液密にシールする再シール性による密閉性と、必要時に限って接続口を開いて流体を注入投与可能にする注入容易性とを兼ね備えていることが重要である。  Such a medical connector shifts between an open state and a closed state by, for example, expansion and contraction movement and / or expansion and contraction of the connector valve body, and a desired fluid is injected. Therefore, the medical connector has an initial sealing property that always seals the connection port in a liquid-tight manner and a sealing property that re-seals the connection port again in a fluid-tight manner after injection administration, and the connection port is opened only when necessary. It is important to combine the ease of injection that enables the administration of injection.

この発明は、初期シール及び再シール性による密閉性と注入容易性とを兼ね備えたコネクタ、並びに、コネクタの密閉性及び注入容易性に貢献するコネクタ用弁体を提供することを、目的とする。  It is an object of the present invention to provide a connector that has both a sealing property due to initial sealing and resealability and an ease of injection, and a connector valve body that contributes to the sealing property and the ease of injection of the connector.

前記課題を解決するための第１の手段であるこの発明に係るコネクタ用弁体は、管体を接続可能な少なくとも２つの接続口及びこれらの接続口を連通する内部流路を有するコネクタ管に収納されるコネクタ用弁体であって、第１の前記接続口内に配置される逆錐台形状のシール部を有する弁本体と、前記弁本体と離間して並設された支持体と、前記弁本体及び前記支持体を連結し、前記弁本体を支持する少なくとも１つの高伸縮性支持部と、前記弁本体の軸線方向において前記シール部に対して前記高伸縮性支持部よりも遠位かつ前記高伸縮性支持部と離間した位置で前記弁本体及び前記支持体を連結し、前記弁本体を支持する少なくとも１つの低伸縮性支持部とを備えていることを特徴とする。  The valve body for a connector according to the present invention which is the first means for solving the above problems is a connector pipe having at least two connection ports to which the tube body can be connected and an internal flow path communicating these connection ports. A connector valve body to be housed, the valve body having an inverted frustum-shaped seal portion disposed in the first connection port; a support body disposed in parallel with the valve body; and At least one highly stretchable support part that connects the valve body and the support body and supports the valve body; and distal to the seal part in the axial direction of the valve body; The valve main body and the support body are connected at a position separated from the high elastic support portion, and at least one low elastic support portion for supporting the valve main body is provided.

このコネクタ用弁体における好適な一例は、
（１）前記高伸縮性支持部及び前記低伸縮性支持部の少なくとも一方は、前記弁本体の軸線に垂直な平面において前記軸線を中心とする中心角１８０°未満の領域内で前記弁本体に連結し、
（２）前記高伸縮性支持部及び前記低伸縮性支持部は、前記弁本体の外周面のうち前記弁本体の軸線に沿う同一直線上に連結され、
（３）前記高伸縮性支持部は、壁状体又は棒状体であり、
（４）前記低伸縮性支持部は、前記シール部と反対側に凸となる湾曲壁状体又は湾曲棒状体であり、
（５）前記高伸縮性支持部及び前記低伸縮性支持部の少なくとも一方は、少なくとも２つが、前記軸線方向に垂直な平面において前記弁本体の軸線との角度が０°以上１８０°未満の中心角で前記弁体の周方向に離間して配置され、
（６）前記支持体は、前記弁本体に略並行に配置された少なくとも１つの柱状体、又は、前記弁本体の外周面の少なくとも一部を囲繞する少なくとも１つの扇状壁若しくは管状壁であり、
（７）前記支持体は、前記高伸縮性支持部の連結位置よりも前記シール部の反対側に前記低伸縮性支持部が連結された切欠部を有しており、
（８）前記弁本体は、軸線方向に沿って前記シール部と錐台形状の第２シール部と胴部とが連設され、
（９）前記弁本体、前記高伸縮性支持部、前記低伸縮性支持部及び前記支持体は、弾性材料で一体成形された一体成形体である。A preferred example of this connector valve body is:
(1) At least one of the high stretch support portion and the low stretch support portion is disposed on the valve body within a region having a central angle of less than 180 ° centered on the axis in a plane perpendicular to the axis of the valve body. Concatenate,
(2) The high stretch support portion and the low stretch support portion are connected on the same straight line along the axis of the valve body in the outer peripheral surface of the valve body,
(3) The highly elastic support portion is a wall-like body or a rod-like body,
(4) The low stretchable support portion is a curved wall-like body or a curved rod-like body that is convex on the side opposite to the seal portion,
(5) At least one of the high stretch support portion and the low stretch support portion has at least two centers having an angle of 0 ° or more and less than 180 ° with the axis of the valve body in a plane perpendicular to the axial direction. Spaced apart in the circumferential direction of the valve body at the corners,
(6) The support is at least one columnar body arranged substantially parallel to the valve body, or at least one fan-like wall or tubular wall surrounding at least a part of the outer peripheral surface of the valve body,
(7) The support has a notch portion where the low stretch support portion is connected to the opposite side of the seal portion from the connection position of the high stretch support portion.
(8) In the valve body, the seal part, the frustum-shaped second seal part, and the body part are continuously provided along the axial direction.
(9) The valve main body, the high stretchable support portion, the low stretchable support portion, and the support body are an integrally molded body integrally formed of an elastic material.

前記課題を解決するための第２の手段であるこの発明に係るコネクタは、管体を接続可能な少なくとも２つの接続口及びこれらの接続口を連通する内部流路を有するコネクタ管と、前記シール部が第１の前記接続口内に配置されるように前記コネクタ管に収納されたこの発明に係るコネクタ用弁体とを備え、前記コネクタ用弁体は、前記シール部が第１の前記接続口を密閉する第１姿勢と前記シール部が前記内部流路側に後退すると共に前記第１の接続口の軸線に対して自身の軸線が傾斜する第２姿勢とに移行可能になっていることを特徴とする。  The connector according to the present invention, which is a second means for solving the above-described problems, includes a connector pipe having at least two connection ports to which a tube body can be connected and an internal flow path communicating these connection ports, and the seal. And the connector valve body housed in the connector pipe so that the portion is disposed in the first connection port, wherein the connector valve body has the seal portion of the first connection port. It is possible to shift to a first posture that seals and a second posture in which the seal portion retracts toward the internal flow path and the axis of the first connection port is inclined with respect to the axis of the first connection port. And

このコネクタにおける好適な一例は、
（１）前記コネクタ管は、前記第１の接続口の軸線方向に沿って前記第１の接続口に隣接配置された前記内部流路と、前記内部流路に並設された支持体収納部とを有しており、
（２）前記支持体収納部は、前記軸線方向に延在し、前記高伸縮性支持部及び前記低伸縮性支持部を挟持してその変形を案内する案内対向面を有しており、
（３）前記コネクタ管は、前記軸線方向に沿って前記第１の接続口に連設され、前記軸線方向に向かって内径が徐々に大きくなる環状拡径内面を有しており、
（４）前記コネクタは、少なくとも３つの前記接続口を有する前記コネクタ管を備えた混注管である。A suitable example of this connector is
(1) The connector pipe includes the internal channel disposed adjacent to the first connection port along the axial direction of the first connection port, and a support housing part provided in parallel with the internal channel. And
(2) The support housing portion has a guide facing surface that extends in the axial direction and sandwiches the high stretch support portion and the low stretch support portion to guide the deformation thereof.
(3) The connector pipe has an annular enlarged inner surface that is connected to the first connection port along the axial direction and has an inner diameter gradually increasing in the axial direction.
(4) The connector is a mixed injection tube including the connector tube having at least three connection ports.

この発明に係るコネクタ用弁体は、前記構成を有し、特に高伸縮性支持部と低伸縮性支持部とで弁本体が支持されている。そして、この発明に係るコネクタはこの発明に係るコネクタ用弁体を備え、接続口はシール部で液密にシールされて高い初期シール性を発揮する。加えて、この発明に係るコネクタは、シール部に作用する押圧力で弁本体が軸線方向の内部流路側に後退すると共に高伸縮性支持部及び低伸縮性支持部の延伸量の相違によって傾倒して開放状態に速やかに移行し、この押圧力が解除されると高伸縮性支持部及び低伸縮性支持部の反発力で弁本体が接続口に向けて接続口の軸線と一致するように前進して接続口を液密に再シールする。  The connector valve body according to the present invention has the above-described configuration, and the valve main body is supported by the high stretch support portion and the low stretch support portion. And the connector which concerns on this invention is provided with the valve body for connectors which concerns on this invention, and a connection port is sealed fluid-tightly by a seal part, and exhibits high initial stage sealing performance. In addition, in the connector according to the present invention, the valve body is retracted toward the internal flow path side in the axial direction by the pressing force acting on the seal portion, and is inclined due to the difference in the extension amount between the high and low stretch support portions. When the pressing force is released, the valve body moves toward the connection port so that it coincides with the axis of the connection port by the repulsive force of the high and low stretch support portions. Then re-seal the connection port liquid-tight.

したがって、この発明によれば、初期シール及び再シール性による密閉性と注入容易性とを兼ね備えたコネクタ、並びに、コネクタの密閉性及び注入容易性に貢献するコネクタ用弁体を提供できる。  Therefore, according to the present invention, it is possible to provide a connector that has both the sealing performance due to the initial seal and the resealability and the ease of injection, and the connector valve body that contributes to the sealing performance and the ease of injection of the connector.

図１は、この発明に係るコネクタの一例における第１姿勢を示す概略断面図である。FIG. 1 is a schematic cross-sectional view showing a first posture in an example of a connector according to the present invention.図２は、この発明に係るコネクタの一例における第２姿勢を示す概略断面図である。FIG. 2 is a schematic cross-sectional view showing a second posture in an example of the connector according to the present invention.

この発明に係るコネクタ用弁体は、少なくとも２つの管体同士を接続するコネクタ、例えば、患者に留置されたカテーテルに連結されたチューブ等と輸液管等とを接続する医療用コネクタすなわち注入管等、特に、前記チューブと、注射針を備えていない注射器等の管体、例えば、ルアーロック付きシリンジ、ルアーロック付き輸液管等（この発明において針無し管体と称する。）を接続する医療用コネクタすなわち混注管等に、好適に用いられる。以下に医療用コネクタを例に挙げてこの発明を説明する。  The valve body for a connector according to the present invention is a connector that connects at least two tubes, for example, a medical connector that connects a tube connected to a catheter placed in a patient and an infusion tube, that is, an infusion tube, or the like In particular, a medical connector for connecting the tube and a tube body such as a syringe without an injection needle, such as a syringe with a luer lock, an infusion tube with a luer lock, etc. (referred to as a needleless tube body in the present invention). That is, it is suitably used for a mixed injection tube or the like. The present invention will be described below by taking a medical connector as an example.

この発明に係るコネクタについての詳細は後述するが、この発明に係るコネクタ用弁体の理解を容易にするため簡単に説明すると、この発明に係るコネクタの好適な一例であるコネクタ１は、図１及び図２に示されるように、平面視略Ｙ字状のコネクタ管５とコネクタ管５に内蔵されるコネクタ用弁体７とを備えている。このコネクタ管５は、例えば針無し管体８１を接続可能な第１の接続口１２、患者に留置されたカテーテル等に連結された、図示しない管体が接続される第２の接続口１３、及び、患者に投与する流体を収納したバッグ等に連結された、図示しない管体が接続される第３の接続口１４と、これらの接続口１２〜１４を連通する内部流路１５とを有している。このコネクタ管５において、内部流路１５はコネクタ用弁体７の弁本体が配置される内部空間をも兼ねる。内部流路１５の第３の接続口１４と反対側には筒状の支持体収納部１６が内部流路１５に並設されている。この発明に係るコネクタ用弁体は、その支持体が支持部収納部１６に収納され、シール部が第１の接続口１２内に位置するように弁本体が内部流路１５内に配置されて、コネクタ管５に収納される。  The details of the connector according to the present invention will be described later. However, in order to facilitate understanding of the connector valve body according to the present invention, aconnector 1 as a preferred example of the connector according to the present invention will be described with reference to FIG. As shown in FIG. 2, aconnector pipe 5 having a substantially Y shape in plan view and aconnector valve body 7 built in theconnector pipe 5 are provided. Theconnector tube 5 includes, for example, afirst connection port 12 to which aneedleless tube 81 can be connected, asecond connection port 13 connected to a catheter or the like that is placed in a patient, to which a tube (not shown) is connected, And athird connection port 14 connected to a tube or the like that stores a fluid to be administered to a patient, to which a tube (not shown) is connected, and aninternal channel 15 that communicates theseconnection ports 12 to 14. doing. In thisconnector pipe 5, theinternal flow path 15 also serves as an internal space in which the valve body of theconnector valve body 7 is disposed. A cylindricalsupport housing portion 16 is provided in parallel with theinternal flow path 15 on the opposite side of theinternal flow path 15 from thethird connection port 14. In the connector valve body according to the present invention, the support body is housed in the supportportion housing portion 16, and the valve body is disposed in theinternal flow path 15 so that the seal portion is located in thefirst connection port 12. Theconnector tube 5 is housed.

この発明に係るコネクタ用弁体は、第１の接続口１２内に配置される逆錐台形状のシール部を有する弁本体と、この弁本体と離間して並設された支持体と、弁本体及び支持体を連結し、弁本体を支持する少なくとも１つの高伸縮性支持部と、弁本体の軸線方向においてシール部に対して高伸縮性支持部よりも遠位かつ高伸縮性支持部と離間した位置で弁本体及び支持体を連結し、弁本体を支持する少なくとも１つの低伸縮性支持部とを備えていることを特徴とする。このような特徴を有するこの発明に係るコネクタ用弁体は後述するようにコネクタの密閉性及び注入容易性に貢献できる。  The connector valve body according to the present invention includes a valve body having an inverted frustum-shaped seal portion disposed in thefirst connection port 12, a support body provided in parallel with the valve body, and a valve At least one highly stretchable support portion that connects the main body and the support body and supports the valve body; and a high stretchable support portion that is distal to the seal portion and higher than the highly stretchable support portion in the axial direction of the valve body. The valve main body and the support body are connected at a spaced position, and at least one low stretchable support portion for supporting the valve main body is provided. The connector valve body according to the present invention having such characteristics can contribute to the sealing and ease of injection of the connector as will be described later.

この発明に係るコネクタ用弁体の一例を、この発明に係るコネクタの一例と共に図面を参照して、説明する。一例としてのコネクタ１は、図１及び図２に示されるように、コネクタ管５と、一例としてのコネクタ用弁体７とを備えている。なお、コネクタ１において、図１に示されるように、コネクタ管５における第１の接続口１２及び内部流路１５、並びに、コネクタ用弁体７における弁本体２１及びシール部３１の各軸線Ｃは第１の姿勢においてほぼ一致しているので、以下、特に断らない限り、軸線は各軸線をいう。  An example of a connector valve body according to the present invention will be described together with an example of a connector according to the present invention with reference to the drawings. Theconnector 1 as an example is provided with the connector pipe |tube 5 and thevalve body 7 for connectors as an example, as FIG.1 and FIG.2 shows. In theconnector 1, as shown in FIG. 1, thefirst connection port 12 and theinternal flow path 15 in theconnector pipe 5, and the axis C of thevalve body 21 and theseal portion 31 in theconnector valve body 7 are Since the first posture is almost the same, hereinafter, the axis refers to each axis unless otherwise specified.

コネクタ用弁体７は、図１及び図２に示されるように、弁本体２１と支持体２２と１つの高伸縮性支持部２３と１つの低伸縮性支持部２４とを備えている。  As shown in FIGS. 1 and 2, theconnector valve body 7 includes a valvemain body 21, asupport body 22, one highstretchable support portion 23, and one lowstretchable support portion 24.

弁本体２１は、第１の接続口１２の先端面と少なくとも面一となるように第１の接続口１２に露出する平坦頂面３１ａを有する逆円錐台形状のシール部３１と、シール部３１の平坦頂面３１ａとは反対側に連接された円錐台形状の第２のシール部３２と、第２のシール部３２のシール部３１とは反対側に連接された円柱状の胴部３３とを有している。このように弁本体２１はその軸線Ｃ方向に沿って順に連設されたシール部３１と第２シール部３２と胴部３３とを備えている。シール部３１は、第１の接続口１２内に配置され、第１の接続口１２と基本的に同様の寸法又はわずかに大きな寸法に形成されている。例えば、シール部３１はその軸線Ｃ方向の長さに対する外径の減少量が０．０１〜０．１５となる逆円錐台形状になっている。シール部３１が逆錐台形状に整形されていると、開放状態から密閉状態に復帰する際に第１の接続口１２内に流体が残存しにくく、第１の接続口１２から流体の漏洩を防止できる。第２のシール部３２は、最小外径がシール部３１の最小外径と略同一の円錐台形状を成し、その外周面が後述するコネクタ管５の環状拡径内面１７に密接して第１の接続口１２を密閉する。したがって、弁本体２１が第２のシール部３２を有していると高い初期シール性を発揮する。この第２のシール部３２において軸線Ｃ方向の長さに対する外径の減少量は特に限定されず、適宜の値に設定される。胴部３３は、その軸線Ｃに沿って延在し、後述する高伸縮性支持部２３及び低伸縮性支持部２４が接続される、好ましくは中実の円柱体に形成されている。この胴部３３は第２のシール部３２の最大外径よりも小さな外径を有しているが、外径及び軸線方向の長さ等の寸法は適宜に設定される。  Thevalve body 21 includes an invertedfrustoconical seal portion 31 having a flattop surface 31a exposed to thefirst connection port 12 so as to be at least flush with the distal end surface of thefirst connection port 12, and theseal portion 31. A secondfrustoconical seal portion 32 connected to the opposite side of the flattop surface 31a, and acylindrical barrel portion 33 connected to the opposite side of theseal portion 31 of thesecond seal portion 32; have. As described above, thevalve body 21 includes theseal portion 31, thesecond seal portion 32, and thebody portion 33 that are sequentially provided along the axis C direction. Theseal portion 31 is disposed in thefirst connection port 12 and is formed to have basically the same size as thefirst connection port 12 or a slightly larger size. For example, theseal portion 31 has an inverted truncated cone shape in which the amount of decrease in the outer diameter with respect to the length in the axis C direction is 0.01 to 0.15. When the sealingportion 31 is shaped into an inverted frustum shape, fluid hardly remains in thefirst connection port 12 when returning from the open state to the sealed state, and fluid leaks from thefirst connection port 12. Can be prevented. Thesecond seal portion 32 has a truncated cone shape whose minimum outer diameter is substantially the same as the minimum outer diameter of theseal portion 31, and its outer peripheral surface is in close contact with the annular diameter-enlargedinner surface 17 of theconnector pipe 5 described later. 1connection port 12 is sealed. Therefore, when the valvemain body 21 has thesecond seal portion 32, high initial sealing performance is exhibited. In thesecond seal portion 32, the amount of decrease in the outer diameter with respect to the length in the axis C direction is not particularly limited, and is set to an appropriate value. Thetrunk portion 33 extends along the axis C, and is preferably formed as a solid cylindrical body to which a highstretch support portion 23 and a lowstretch support portion 24 described later are connected. Although this trunk | drum 33 has an outer diameter smaller than the largest outer diameter of the 2nd seal |sticker part 32, dimensions, such as an outer diameter and the length of an axial direction, are set suitably.

支持体２２は、弁本体２１と離間して並設、すなわち略並行に配置されている。この支持体２２は、その軸線方向の略中央部及び端部それぞれに、例えば低伸縮性支持部２４が接続された接続位置であって軸線Ｃ方向におけるシール部３１と反対側に切欠部２２ａを有する１つの円柱状体に形成されている。この欠落部２２ａは円柱状体の軸線に向う管状凹部であればよく、例えば、断面略三角形の環状凹部又は錐台形の管状凹部等が挙げられる。この支持体２２においては、その軸線方向の略中央部に切欠部２２ａとして断面略三角形の環状凹部を有し、軸線方向の端部に切欠部２２ａとして錐台形の管状凹部を有している。このように支持体２２に切欠部２２ａを有していると、低伸縮性支持部２４を高伸縮性支持部２３よりも伸長しにくくして、弁本体２１を容易かつ大きく傾倒させてコネクタ１の注入容易性に大きく貢献できる。  Thesupport body 22 is spaced apart from thevalve body 21 and arranged in parallel, that is, substantially in parallel. Thesupport body 22 has acutout portion 22a on the opposite side of theseal portion 31 in the axis C direction, for example, at a connection position where the lowstretch support portion 24 is connected to the substantially central portion and the end portion in the axial direction. It is formed into a single cylindrical body. The missingportion 22a may be a tubular concave portion facing the axis of the cylindrical body, and examples thereof include an annular concave portion having a substantially triangular cross section or a frustum-shaped tubular concave portion. Thesupport 22 has an annular recess having a substantially triangular cross section as anotch 22a at a substantially central portion in the axial direction, and a frustum-shaped tubular recess as annotch 22a at an end in the axial direction. When thesupport 22 has thenotch 22a as described above, thelow stretch support 24 is less likely to extend than thehigh stretch support 23, and thevalve body 21 is easily and greatly tilted to make theconnector 1 Can greatly contribute to the ease of injection.

高伸縮性支持部２３は、弁本体２１及び支持体２２を連結し、弁本体２１の軸線Ｃの周方向から均等に弁本体２１を支持せず、弁本体２１を所謂「片持ち状態」に支持している。具体的には、高伸縮性支持部２３は、弁本体２１の軸線Ｃに垂直な平面において軸線Ｃを中心とする中心角１８０°未満の領域内で弁本体２１及び支持体２２を連結し、弁本体２１は高伸縮性支持部２３が連結されていない領域を周方向の半分以上に有している。このように、高伸縮性支持部２３が前記領域内で連結されていると、弁本体２１の後退及び弁本体２１の傾倒が容易でコネクタが密閉状態から開放状態に容易かつスムーズに移行する。この効果により一層優れる点で高伸縮性支持部２３が連結される領域は中心角９０°以下の領域であるのが好ましく、中心角１〜３０°の領域であるのが特に好ましい。ここで、高伸縮性支持部２３は、弁本体２１の軸線に垂直で弁本体２１及び高伸縮性支持部２３を含む平面において、弁本体２１の軸線Ｃに対するｎ回回転対称性（ｎは２以上の整数）を有しないように、すなわち１回回転対称性のみを有するように、弁本体２１及び支持体２２を連結しているということもできる。このように、高伸縮性支持部２３は前記平面において軸線のまわりに３６０°すなわち１回転させたときに初めてもとの回転前の形状と一致するように横架されている。ここで、「対称性」は幾何学的に正確な対称性に加えて、この発明の目的を逸脱しない範囲での実質的な対称性をも含む。  The highlystretchable support portion 23 connects thevalve body 21 and thesupport body 22, does not support thevalve body 21 evenly from the circumferential direction of the axis C of thevalve body 21, and puts thevalve body 21 into a so-called “cantilever state”. I support it. Specifically, the highlystretchable support portion 23 connects thevalve body 21 and thesupport body 22 within a region having a central angle of less than 180 ° centered on the axis C in a plane perpendicular to the axis C of thevalve body 21. Thevalve body 21 has a region where the highlystretchable support portion 23 is not connected to more than half of the circumferential direction. Thus, when the highlyelastic support part 23 is connected in the said area | region, the retreat of the valvemain body 21 and the tilting of the valvemain body 21 are easy, and a connector will transfer easily and smoothly from a sealing state to an open state. The region to which the highlystretchable support portion 23 is connected is more preferably a region having a central angle of 90 ° or less, and particularly preferably a region having a central angle of 1 to 30 °. Here, the highstretch support part 23 is n-fold rotationally symmetric (n is 2) with respect to the axis C of thevalve body 21 in a plane perpendicular to the axis of thevalve body 21 and including thevalve body 21 and the highstretch support part 23. It can also be said that thevalve body 21 and thesupport 22 are connected so as not to have the above integer), that is, to have only one-time rotational symmetry. In this way, the highstretchable support portion 23 is horizontally laid so as to coincide with the original shape before rotation only when it is rotated 360 ° around the axis, that is, one rotation. Here, “symmetry” includes not only geometrically accurate symmetry but also substantial symmetry within a range not departing from the object of the present invention.

この高伸縮性支持部２３は、図１に示されるように、低伸縮性支持部２４よりもシール部３１側の外周面から略水平方向に延在して弁本体２１と支持体２２を連結し、換言すると弁本体２１及び支持体２２に横架されている。ここで、「横架」とは弁本体２１の軸線に対して正確な垂直方向に高伸縮性支持部２３が架け渡され、すなわち延在していることに加えて、前記軸線に対して例えば０°を超え３０°の角度で交わる程度に傾斜した方向に高伸縮性支持部２３が架け渡されている場合を含む。  As shown in FIG. 1, the highstretchable support portion 23 extends in a substantially horizontal direction from the outer peripheral surface on theseal portion 31 side of the lowstretchable support portion 24 to connect thevalve body 21 and thesupport body 22. In other words, thevalve body 21 and thesupport body 22 are horizontally mounted. Here, the term “horizontal” means that, in addition to the highstretchable support portion 23 being stretched in an accurate vertical direction with respect to the axis of thevalve body 21, that is, extending, This includes the case where the highlystretchable support portion 23 is bridged in a direction inclined so as to intersect at an angle of more than 0 ° and 30 °.

高伸縮性支持部２３は、図２に示されるように、弁本体２１のシール部３１に作用する軸線Ｃ方向の押圧力によって後述する低伸縮性支持部２４よりも伸長しやすい特性を有しており、低伸縮性支持部２４と共に弁本体２１のシール部３１側を大きく傾斜させる。  As shown in FIG. 2, the highstretchable support portion 23 has a characteristic that it is more easily extended than a lowstretchable support portion 24 described later by the pressing force in the direction of the axis C acting on theseal portion 31 of thevalve body 21. In addition, theseal body 31 side of thevalve body 21 is largely inclined together with the lowstretchable support section 24.

この高伸縮性支持部２３は、後述する低伸縮性支持部２４と共に、弁本体２１を第１の接続口１２に向けて支持・付勢するように支持体２２と弁本体２１とを連結している。また、高伸縮性支持部２３は、後述する低伸縮性支持部２４と相まって弁本体２１を支持体２２に対して軸線Ｃ方向に相対的に前後進可能にすると共に、弁本体２１の相対的な前後進に伴って弁本体２１の軸線を支持体２３の軸線に対して傾斜させるように、支持体２２と弁本体２１とを連結している。  The highstretchable support part 23 connects thesupport body 22 and thevalve body 21 so as to support and bias thevalve body 21 toward thefirst connection port 12 together with the lowstretchable support part 24 described later. ing. In addition, the highstretchable support portion 23, coupled with a lowstretchable support portion 24 described later, allows thevalve body 21 to move forward and backward relative to thesupport body 22 in the direction of the axis C, and relative to thevalve body 21. Thesupport body 22 and thevalve body 21 are coupled so that the axis of thevalve body 21 is inclined with respect to the axis of thesupport body 23 as the valve moves forward and backward.

低伸縮性支持部２４は、弁本体２１及び支持体２２を連結し、弁本体２１の軸線Ｃの周方向から均等に弁本体２１を支持せず、弁本体２１を所謂「片持ち状態」に支持している。具体的には、低伸縮性支持部２４は、弁本体２１の軸線Ｃに垂直な平面において軸線Ｃを中心とする中心角１８０°未満の領域内で弁本体２１及び支持体２２を連結し、弁本体２１は低伸縮性支持部２４が連結されていない領域を周方向の半分以上に有している。このように、低伸縮性支持部２４が前記領域内で連結されていると、弁本体２１の後退及び弁本体２１の傾倒が容易でコネクタが密閉状態から開放状態に容易かつスムーズに移行する。この効果により一層優れる点で高伸縮性支持部２３が連結される領域は中心角９０°以下の領域であるのが好ましく、中心角１〜３０°の領域であるのが特に好ましい。ここで、低伸縮性支持部２４は、弁本体２１の軸線に垂直で弁本体２１及び低伸縮性支持部２４を含む平面において、弁本体２１の軸線Ｃに対するｎ回回転対称性（ｎは２以上の整数）を有しないように、すなわち１回回転対称性のみを有するように、弁本体２１及び支持体２２を連結しているということもできる。このように、低伸縮性支持部２４は前記平面において軸線のまわりに３６０°すなわち１回転させたときに初めてもとの回転前の形状と一致するように横架されている。ここで、「対称性」は幾何学的に正確な対称性に加えて、この発明の目的を逸脱しない範囲での実質的な対称性をも含む。  The lowstretchable support portion 24 connects thevalve body 21 and thesupport body 22, does not support thevalve body 21 evenly from the circumferential direction of the axis C of thevalve body 21, and puts thevalve body 21 into a so-called “cantilever state”. I support it. Specifically, the lowstretchable support portion 24 connects thevalve body 21 and thesupport body 22 within a region having a central angle of less than 180 ° centered on the axis C in a plane perpendicular to the axis C of thevalve body 21; Thevalve body 21 has a region where the lowstretchable support portion 24 is not connected to more than half of the circumferential direction. As described above, when the lowstretchable support portion 24 is connected within the region, thevalve body 21 can be easily retracted and thevalve body 21 can be easily tilted, and the connector can be easily and smoothly shifted from the sealed state to the open state. The region to which the highlystretchable support portion 23 is connected is more preferably a region having a central angle of 90 ° or less, and particularly preferably a region having a central angle of 1 to 30 °. Here, the lowstretchable support portion 24 is n-fold rotationally symmetric (n is 2) with respect to the axis C of thevalve body 21 in a plane perpendicular to the axis of thevalve body 21 and including thevalve body 21 and the lowstretchable support portion 24. It can also be said that thevalve body 21 and thesupport 22 are connected so as not to have the above integer), that is, to have only one-time rotational symmetry. In this way, the lowstretchable support portion 24 is laid horizontally so as to coincide with the original unrotated shape when it is rotated 360.degree. Here, “symmetry” includes not only geometrically accurate symmetry but also substantial symmetry within a range not departing from the object of the present invention.

この低伸縮性支持部２４は、図１に示されるように、シール部３１に対して高伸縮性支持部２３よりも遠位の外周面から略水平方向に延在して弁本体２１と支持体２２を連結し、換言すると弁本体２１及び支持体２２に横架されている。ここで、「横架」とは前記した通りである。  As shown in FIG. 1, the lowstretchable support portion 24 extends in a substantially horizontal direction from the outer peripheral surface distal to the highstretchable support portion 23 with respect to theseal portion 31 and supports thevalve body 21. Thebody 22 is connected, in other words, is laid across thevalve body 21 and thesupport body 22. Here, “horizontal” is as described above.

また、低伸縮性支持部２４は、弁本体２１の軸線Ｃ方向においてシール部３１に対して高伸縮性支持部２３よりも遠位で高伸縮性支持部２３と離間した位置で２１弁本体及び支持体２２を連結している。すなわち、高伸縮性支持部２３は弁本体２１の胴部３３にシール部３１側で連結され、低伸縮性支持部２４は弁本体２１の胴部３３にシール部３１とは反対の端部側で連結され、高伸縮性支持部２３及び低伸縮性支持部２４の連結位置は離間している。このように高伸縮性支持部２３及び低伸縮性支持部２４は軸線Ｃ方向に並設されている。高伸縮性支持部２３及び低伸縮性支持部２４がこのように並設されていると弁本体２１を大きな傾斜角度でスムーズに傾倒させることができる。  Further, the lowstretch support portion 24 is located at a position farther away from the highstretch support portion 23 than the highstretch support portion 23 with respect to theseal portion 31 in the axis C direction of thevalve body 21. Thesupport 22 is connected. That is, the highstretch support part 23 is connected to thebody part 33 of thevalve body 21 on theseal part 31 side, and the lowstretch support part 24 is connected to thebody part 33 of thevalve body 21 on the side opposite to theseal part 31. And the connecting positions of the highstretch support part 23 and the lowstretch support part 24 are separated from each other. Thus, the highstretch support part 23 and the lowstretch support part 24 are juxtaposed in the direction of the axis C. When the highstretch support portion 23 and the lowstretch support portion 24 are arranged side by side in this manner, thevalve body 21 can be smoothly tilted at a large tilt angle.

さらに、この低伸縮性支持部２４は、弁本体２１の外周面のうち弁本体２１の軸線Ｃに沿う同一直線上に連結されている。高伸縮性支持部２３及び低伸縮性支持部２４がこのように連結されていると弁本体２１を大きな傾斜角度でスムーズに傾倒させることができる。  Further, the lowstretchable support portion 24 is connected on the same straight line along the axis C of thevalve body 21 in the outer peripheral surface of thevalve body 21. When the highstretch support portion 23 and the lowstretch support portion 24 are connected in this manner, thevalve body 21 can be smoothly tilted at a large tilt angle.

低伸縮性支持部２４は、支持体２２に凹設された欠落部２２ａの傾斜面のうち軸線Ｃ方向においてシール部３１と反対側（コネクタ用弁体７において下流側と称し、シール部３１側を上流側と称することがある。）に面するテーパ面２２ｂに接続している。このように下流側に凸となる湾曲棒状体である低伸縮性支持部２４がテーパ面２２ｂに接続していると、シール部３１に作用し、低伸縮性支持部２４に伝達された押圧力をテーパ面２２ｂで受け止め、低伸縮性支持部２４が過度に伸長することを防止できる。  The lowstretchable support portion 24 is on the opposite side to theseal portion 31 in the direction of the axis C on the inclined surface of the missingportion 22a provided in the support 22 (referred to as the downstream side in the connector valve body 7). Is connected to atapered surface 22b facing the upper surface. Thus, when the lowelastic support part 24 which is a curved rod-like body protruding downstream is connected to the taperedsurface 22b, the pressing force transmitted to the lowelastic support part 24 acts on theseal part 31. Can be received by the taperedsurface 22b, and the lowstretchable support portion 24 can be prevented from excessively extending.

低伸縮性支持部２４は、図２に示されるように、弁本体２１のシール部３１に作用する軸線Ｃ方向の押圧力によって高伸縮性支持部２３よりも伸長しにくい特性を有しており、高伸縮性支持部２３と共に弁本体２１のシール部３１側を大きく傾斜させる。高伸縮性支持部２３の伸長性は低伸縮性支持部２４よりも大きければよい。  As shown in FIG. 2, the lowstretch support portion 24 has a characteristic that it is less likely to extend than the highstretch support portion 23 due to the pressing force in the direction of the axis C acting on theseal portion 31 of thevalve body 21. Theseal part 31 side of thevalve body 21 is largely inclined together with the highlystretchable support part 23. The stretchability of the highstretchable support portion 23 only needs to be greater than that of the lowstretchable support portion 24.

この低伸縮性支持部２４は、高伸縮性支持部２３と共に、弁本体２１を第１の接続口１２に向けて支持・付勢するように支持体２２と弁本体２１とを連結している。また、低伸縮性支持部２４は、高伸縮性支持部２３と相まって弁本体２１を支持体２２に対して軸線Ｃ方向に相対的に前後進可能にすると共に、弁本体２１の相対的な前後進に伴って弁本体２１の軸線を支持体２３の軸線に対して傾斜させるように、支持体２２と弁本体２１とを連結している。そして、コネクタ用弁体７において、高伸縮性支持部２３及び低伸縮性支持部２４が弁本体２１の周方向に対称に配置されていないにもかかわらず、弁本体２１をその軸線方向に沿って付勢できるうえ、シール部３１を小径の第１の接続口１２に圧入させて再シールできる理由はコネクタ用弁体７が弾性復帰をすることにある。  The lowstretch support portion 24 connects thesupport body 22 and thevalve body 21 together with the highstretch support portion 23 so as to support and bias thevalve body 21 toward thefirst connection port 12. . Further, the lowstretchable support portion 24, coupled with the highstretchable support portion 23, allows thevalve body 21 to move forward and backward relative to thesupport body 22 in the direction of the axis C, and the relative stretch of thevalve body 21. Thesupport body 22 and the valvemain body 21 are connected so that the axis of the valvemain body 21 is inclined with respect to the axis of thesupport 23 as it advances. And in thevalve body 7 for connectors, although the highelastic support part 23 and the lowelastic support part 24 are not arrange | positioned symmetrically in the circumferential direction of the valvemain body 21, the valvemain body 21 is followed along the axial direction. The reason why theseal portion 31 can be re-sealed by press-fitting theseal portion 31 into thefirst connection port 12 having a small diameter is that theconnector valve body 7 is elastically restored.

コネクタ用弁体７において、この高伸縮性支持部２３は前記中心角１８０°未満の領域内、具体的には一つの半径方向に延在する１つの棒状体として構成され、低伸縮性支持部２４は前記中心角１８０°未満の領域内、具体的には一つの半径方向にシール部３１と反対側に凸となるように延在する湾曲棒状体として構成されている。  In theconnector valve body 7, the highstretchable support portion 23 is configured as a single rod-like body extending in the region of the central angle of less than 180 °, specifically in one radial direction.Reference numeral 24 is configured as a curved rod-like body extending so as to protrude in the region of the central angle of less than 180 °, specifically in one radial direction opposite to theseal portion 31.

このように、高伸縮性支持部２３及び低伸縮性支持部２４は、第１の接続口１２の初期シール性及び再シール性と共に弁本体２１の注入容易性を考慮して適宜の数、形状及び寸法に調整される。具体的には、高伸縮性支持部２３及び低伸縮性支持部２４において、シール部２１が前記範囲の減少率を有している場合には、高伸縮性支持部２３及び低伸縮性支持部２４が相まって前記のように弁本体２１を支持できればよく、例えば、高伸縮性支持部２３及び低伸縮性支持部２４は次の形状及び寸法を有しているのがよい。具体的には、高伸縮性支持部２３は、その断面形状が丸形又は四角形であるのが好ましく、少なくとも、その幅（図１における紙面の奥行き方向の長さ）が２ｍｍ以上、好ましくは２〜５ｍｍ、延在長さが１ｍｍ以上、好ましくは１〜３ｍｍ、軸線方向の長さ（図１における紙面の上下方向の長さ）が２ｍｍ以上、好ましくは２〜５ｍｍである。低伸縮性支持部２４は、その断面形状が丸形又は四角形であるのが好ましく、少なくとも、その幅が２ｍｍ以上、好ましくは２〜５ｍｍ、延在長さが１ｍｍ以上、好ましくは１〜３ｍｍ、軸線方向の長さが２ｍｍ以上、好ましくは２〜５ｍｍで、曲率半径が２ｍｍ以上、好ましくは２〜４ｍｍである。また、高伸縮性支持部２３及び低伸縮性支持部２４が接続される胴部３３の軸線方向の位置は、それぞれ、胴部３３におけるシール部３１と反対側の端部からシール部３１に向かって、５〜１２ｍｍの位置及び０〜５ｍｍの位置であるのが好ましい。  As described above, the highstretch support portions 23 and the lowstretch support portions 24 have an appropriate number and shape in consideration of the ease of injection of thevalve body 21 together with the initial sealability and resealability of thefirst connection port 12. And adjusted to dimensions. Specifically, in the highstretch support portion 23 and the lowstretch support portion 24, when theseal portion 21 has a reduction rate in the above range, the highstretch support portion 23 and the low stretch support portion. It is sufficient that thevalve body 21 can be supported as described above in combination with thevalve 24. For example, thehigh stretch support 23 and thelow stretch support 24 preferably have the following shapes and dimensions. Specifically, the highstretchable support part 23 preferably has a round or square cross-sectional shape, and at least its width (length in the depth direction of the paper surface in FIG. 1) is 2 mm or more, preferably 2 -5 mm, the extension length is 1 mm or more, preferably 1 to 3 mm, and the length in the axial direction (the length in the vertical direction of the paper surface in FIG. 1) is 2 mm or more, preferably 2 to 5 mm. The lowstretchable support portion 24 preferably has a round or square cross-sectional shape, and at least a width of 2 mm or more, preferably 2 to 5 mm, an extension length of 1 mm or more, preferably 1 to 3 mm, The length in the axial direction is 2 mm or more, preferably 2 to 5 mm, and the radius of curvature is 2 mm or more, preferably 2 to 4 mm. In addition, the axial position of thetrunk portion 33 to which the highstretch support portion 23 and the lowstretch support portion 24 are connected is directed from the end of thetrunk portion 33 opposite to theseal portion 31 toward theseal portion 31. The position is preferably 5 to 12 mm and 0 to 5 mm.

高伸縮性支持部２３及び低伸縮性支持部２４が伸縮性に関して所期の機能を発揮するためには、例えば、高伸縮性支持部２３及び低伸縮性支持部２４は異なる形状又は寸法を有しているのが好ましい。具体的には、形状を変更する場合には図１に示されるように高伸縮性支持部２３は直線状の棒状体で低伸縮性支持部２４が高伸縮性支持部２３の反対側に凸となる湾曲棒状体であるのが好ましく、幅を変更する場合には低伸縮性支持部２４の幅が高伸縮性支持部２３の幅よりも１ｍｍ以上大きいのが好ましく、延在長さを変更する場合には低伸縮性支持部２４の延在長さが高伸縮性支持部２３の延在長さよりも１ｍｍ以上短いのが好ましく、軸線方向の長さを変更する場合には低伸縮性支持部２４の軸線方向の長さが高伸縮性支持部２３の軸線方向の長さよりも１ｍｍ以上大きいのが好ましい。  In order for the highstretch support portion 23 and the lowstretch support portion 24 to perform their intended functions with respect to stretchability, for example, the highstretch support portion 23 and the lowstretch support portion 24 have different shapes or dimensions. It is preferable. Specifically, when the shape is changed, as shown in FIG. 1, the highstretch support portion 23 is a linear rod-like body, and the lowstretch support portion 24 protrudes on the opposite side of the highstretch support portion 23. It is preferable that when the width is changed, the width of the lowstretch support portion 24 is preferably 1 mm or more larger than the width of the highstretch support portion 23 and the extension length is changed. In this case, it is preferable that the extension length of the lowstretch support portion 24 is 1 mm or more shorter than the extension length of the highstretch support portion 23, and the low stretch support portion is changed when the axial length is changed. The length in the axial direction of theportion 24 is preferably 1 mm or more larger than the length in the axial direction of the highlystretchable support portion 23.

コネクタ用弁体７を形成する弾性材料は、第１の接続口１２の初期シール性及び再シール性と共に弁本体２１の注入容易性を考慮してＪＩＳ Ａ硬度、強度及び伸びの少なくとも１つの物性が設定されるのが好ましい。例えば、高伸縮性支持部２３を形成する弾性材料は、ＪＩＳ Ａ硬度が３０〜７０であるのが好ましい。一方、低伸縮性支持部２４を形成する弾性材料は、ＪＩＳ Ａ硬度が３０〜７０であるのが好ましい。このようなＪＩＳ Ａ硬度、強度及び／又は伸びを有する弾性材料として、例えば、各種ゴム、各種エラストマー等が挙げられる。ゴムとしては、例えば、シリコーンゴム、天然ゴム、イソプレンゴム、ブタジエンゴム、スチレン−ブタジエンゴム、ニトリルゴム、クロロプレンゴム、ブチルゴム、アクリルゴム、エチレン−プロピレンゴム、ヒドリンゴム、ウレタンゴム、フッ素ゴム等が挙げられる。エラストマーとしては、例えば、スチレン系熱可塑性エラストマー、ポリオレフィン系熱可塑性エラストマー、ポリ塩化ビニル系熱可塑性エラストマー、ポリウレタン系熱可塑性エラストマー、ポリエステル系熱可塑性エラストマー、ポリアミド系熱可塑性エラストマー、ポリブタジエン系熱可塑性エラストマー、トランスポリイソプレン系熱可塑性エラストマー、フッ素ゴム系熱可塑性エラストマー、塩素化ポリエチレン系熱可塑性エラストマー等が挙げられる。  The elastic material forming theconnector valve body 7 is at least one physical property of JIS A hardness, strength, and elongation in consideration of the initial sealability and resealability of thefirst connection port 12 and the ease of injection of thevalve body 21. Is preferably set. For example, the elastic material forming the highlystretchable support portion 23 preferably has a JIS A hardness of 30 to 70. On the other hand, the elastic material forming the lowstretchable support portion 24 preferably has a JIS A hardness of 30 to 70. Examples of the elastic material having such JIS A hardness, strength and / or elongation include various rubbers and various elastomers. Examples of the rubber include silicone rubber, natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, nitrile rubber, chloroprene rubber, butyl rubber, acrylic rubber, ethylene-propylene rubber, hydrin rubber, urethane rubber, and fluorine rubber. . Examples of the elastomer include a styrene thermoplastic elastomer, a polyolefin thermoplastic elastomer, a polyvinyl chloride thermoplastic elastomer, a polyurethane thermoplastic elastomer, a polyester thermoplastic elastomer, a polyamide thermoplastic elastomer, a polybutadiene thermoplastic elastomer, Examples thereof include trans polyisoprene-based thermoplastic elastomers, fluororubber-based thermoplastic elastomers, and chlorinated polyethylene-based thermoplastic elastomers.

コネクタ用弁体７は、少なくとも高伸縮性支持部２３及び低伸縮性支持部２４が前記物性を有する弾性材料で作製されているのが好ましく、形状又は寸法の変更で異なる伸縮性を有する高伸縮性支持部２３及び低伸縮性支持部２４を備えたコネクタ用弁体７は、高伸縮性支持部２３及び低伸縮性支持部２４を同一の弾性材料で作製でき、この場合には、コネクタ用弁体７、すなわち弁本体２１、支持体２２、高伸縮性支持部２３及び低伸縮性支持部２４は前記弾性材料で一体的に成形されているのが特に好ましい。このように弁本体２１、支持体２２、高伸縮性支持部２３及び低伸縮性支持部２４が一体成形体であると、これらが有機的に機能して第１の接続口１２の初期シール性及び再シール性と共に弁本体２１の注入容易性を発揮することができる。なお、コネクタ用弁体は定法によって成形又は加工することで製造できる。  Theconnector valve body 7 is preferably made of an elastic material having at least the highstretch support portion 23 and the lowstretch support portion 24 having the above-mentioned physical properties. Theconnector valve body 7 having theelastic support portion 23 and the lowstretch support portion 24 can produce the highstretch support portion 23 and the lowstretch support portion 24 with the same elastic material. It is particularly preferable that thevalve body 7, that is, the valvemain body 21, thesupport body 22, the highstretchable support portion 23, and the lowstretchable support portion 24 are integrally formed of the elastic material. Thus, when the valvemain body 21, thesupport body 22, the highstretchable support portion 23, and the lowstretchable support portion 24 are integrally formed, they function organically and the initial sealing property of thefirst connection port 12 is achieved. In addition, the ease of injection of thevalve body 21 can be exhibited together with the resealability. In addition, the valve body for connectors can be manufactured by molding or processing by a conventional method.

この発明に係るコネクタ１は、この発明に係るコネクタ用弁体の一例としてのコネクタ用弁体７とコネクタ管の一例としてのコネクタ管５とを備え、３つの接続口を有する混注管として構成されている。  Aconnector 1 according to the present invention includes aconnector valve body 7 as an example of a connector valve body according to the present invention and aconnector pipe 5 as an example of a connector pipe, and is configured as a mixed injection pipe having three connection ports. ing.

コネクタ管５は、前記したように、管体を接続可能な少なくとも２つの接続口及びこれらの接続口を連通する内部流路を有していればよく、具体的には、図１及び図２に示されるように、その軸線方向の一端側に配置された第１の接続口１２と、他端側に配置された第２の接続口１３と、前記軸線方向に交差する方向に突出するように配置された第３の接続口１４と、第１の接続口１２の軸線方向に沿って第１の接続口１２及び第２の接続口１３の間であって第１の接続口１２に隣接配置され、これらの接続口１２〜１４を連通させる内部流路１５と、内部流路１５の第３の接続口１４と反対側で内部流路１５に並設された支持体収納部１６と、前記軸線方向に沿って第１の接続口１２に連設され、前記軸線方向、すなわち第２の接続口１３に向かって内径が徐々に大きくなる環状拡径内面１７とを有している。このコネクタ管５は、第１の接続口１２及び支持体収納部１６の上部を有する蓋体５ａと、第２の接続口１３、第３の接続口１４、内部流路１５及び支持体収納部１６を有する管本体５ｂとからなり、蓋体５ａと管本体５ｂとは、例えば、接着剤、超音波溶着等で固着されている。なお、コネクタ管５は支持部収納部１６及び環状拡径内面１７を備えていること以外は、従来公知のコネクタ管と基本的に同様であり、各接続口１２〜１４の外周面には針無し管体８１に形成されたルアー溝に螺合するルアーロックを有していてもよい。  As described above, theconnector pipe 5 only needs to have at least two connection ports to which the tube body can be connected and an internal flow path that connects these connection ports. Specifically, FIG. 1 and FIG. As shown in FIG. 2, thefirst connection port 12 disposed on one end side in the axial direction, thesecond connection port 13 disposed on the other end side, and a direction that intersects the axial direction are projected. Between thefirst connection port 12 and thesecond connection port 13 along the axial direction of thefirst connection port 12 and adjacent to thefirst connection port 12 Aninternal flow path 15 that is arranged and communicates with theseconnection ports 12 to 14, and asupport housing portion 16 that is arranged in parallel with theinternal flow path 15 on the side opposite to thethird connection port 14 of theinternal flow path 15; Thefirst connection port 12 is provided along the axial direction, and the axial direction, that is, thesecond connection port 13. Headed inner diameter and an annular enlarged diameterinner surface 17 gradually increases. Theconnector pipe 5 includes alid 5a having upper portions of thefirst connection port 12 and the supportbody storage portion 16, asecond connection port 13, athird connection port 14, aninternal flow path 15 and a support body storage portion. Thelid body 5a and the pipe body 5b are fixed by, for example, an adhesive or ultrasonic welding. Theconnector tube 5 is basically the same as a conventionally known connector tube except that theconnector tube 5 is provided with a supportportion storage portion 16 and an annular enlargedinner surface 17, and needles are provided on the outer peripheral surfaces of theconnection ports 12 to 14. You may have a luer lock screwed in the luer groove formed in the nopipe 81.

支持部収納部１６は、コネクタ用弁体７の支持体２２を収納できればよく、支持体２２と基本的に同様の形状及び同一寸法に形成されている。この例において、支持部収納部１６は支持体２２の外径及び軸線長さと同一の筒状空間を有する管状体として形成されている。そして、この支持部収納部１６は、図１によく示されるように、コネクタ用弁体７の高伸縮性支持部２３及び低伸縮性支持部２４が配置される軸線Ｃに沿う溝が形成されており、内部流路１５に連通する管状囲繞壁と称することもできる。このように、支持部収納部１６は、前記溝の対向面であって、高伸縮性支持部２３及び低伸縮性支持部２４を挟持してその前後進又は変形を案内する案内対向面１６ａを有している。この案内対向面１６ａは、軸線Ｃ方向に延在し、高伸縮性支持部２３及び低伸縮性支持部２４の幅よりもわずかに大きい間隙量で互いに向かい合っているから、後述するように高伸縮性支持部２３及び低伸縮性支持部２４の可動を案内できる。  The supportpart accommodating part 16 should just be able to accommodate thesupport body 22 of thevalve body 7 for connectors, and is fundamentally the same shape and the same dimension as thesupport body 22. In this example, the supportportion storage portion 16 is formed as a tubular body having a cylindrical space that is the same as the outer diameter and the axial length of thesupport 22. And this supportpart accommodating part 16 is formed with the groove | channel along the axis C in which the highelastic support part 23 and the lowelastic support part 24 of thevalve body 7 for connectors are arrange | positioned so that FIG. 1 may show well. It can also be referred to as a tubular wall surrounding theinternal flow path 15. In this way, the supportportion storage portion 16 has aguide facing surface 16a that is the facing surface of the groove and guides the forward / backward movement or deformation by sandwiching the highstretch support portion 23 and the lowstretch support portion 24. Have. Theguide facing surface 16a extends in the direction of the axis C and faces each other with a gap amount slightly larger than the width of the highstretch support portion 23 and the lowstretch support portion 24. The movement of theelastic support portion 23 and the lowstretch support portion 24 can be guided.

環状拡径内面１７は、第２の接続口１３に向かって内径が拡径した第１の環状拡径内面１７ａと、第１の環状拡径内面１７ａよりも内径が大きく拡径した第２の環状拡径内面１７ｂとを第２の接続口１３に向かう方向に沿って有している。この環状拡径内面１７は、弁本体２１が軸線方向に前後進するときの平行移動を案内すると共に、第１の環状拡径内面１７ａ及び第２の環状拡径内面１７ｂの接続部は第２のシール部３２に圧接してシール部３１による第１の接続口１２のシールを補強する。  The annular expandedinner surface 17 includes a first annular expandedinner surface 17a whose inner diameter is increased toward thesecond connection port 13, and a second expanded inner diameter larger than the first annular expandedinner surface 17a. An annular enlargedinner surface 17 b is provided along the direction toward thesecond connection port 13. The annular expandedinner surface 17 guides parallel movement when thevalve body 21 moves back and forth in the axial direction, and the connecting portion between the first annular expandedinner surface 17a and the second annular expandedinner surface 17b is the second. The seal of thefirst connection port 12 by theseal portion 31 is reinforced by being pressed against theseal portion 32.

コネクタ１において、コネクタ用弁体７は、支持体２２が支持部収納部１６に収納され、シール部３１が第１の接続口１２内に位置するように弁本体２１が内部流路１５内に配置されて、コネクタ管５に収納されている。このとき、図１に示されるように、弁本体２１は高伸縮性支持部２３及び低伸縮性支持部２４によって第１の接続口１２側に付勢されているから、シール部３１が第１の接続口１２を密閉する第１姿勢にあり、この姿勢においては、加えて、第２のシール部３２が第１の環状拡径内面１７ａ及び第２の環状拡径内面１７ｂの接続部に圧接している。このようにして第１の接続口１２は高い初期シールで液密に密閉されているから、コネクタ１の外部と内部とが遮断されており、第３の接続口１３を通過した患者の血液又は第２の接続口１４から注入された流体等が第１の接続口１２から流出することがなく、このコネクタ用弁体７は逆止弁、止血弁等としても機能する。また、この第１姿勢にあるとき、第１の接続口１２から露出する平坦頂面３１ａは第１の接続口１２にほぼ面一となるように露出しているから平坦頂面３１ａ及び第１の接続口１２を容易に清掃することができる。  In theconnector 1, theconnector valve body 7 has thevalve body 21 in theinternal flow path 15 so that thesupport body 22 is stored in the supportsection storage section 16 and theseal section 31 is located in thefirst connection port 12. Arranged and accommodated in theconnector pipe 5. At this time, as shown in FIG. 1, thevalve body 21 is biased toward thefirst connection port 12 by the highstretch support portion 23 and the lowstretch support portion 24, so that theseal portion 31 is the first. In this posture, thesecond seal portion 32 is in pressure contact with the connection portions of the first annular enlargedinner surface 17a and the second annular enlargedinner surface 17b. doing. Thus, since thefirst connection port 12 is liquid-tightly sealed with a high initial seal, the outside and the inside of theconnector 1 are blocked, and the blood of the patient that has passed through thethird connection port 13 or The fluid or the like injected from thesecond connection port 14 does not flow out of thefirst connection port 12, and theconnector valve body 7 also functions as a check valve, a hemostasis valve, and the like. Further, when in the first posture, the flattop surface 31a exposed from thefirst connection port 12 is exposed so as to be substantially flush with thefirst connection port 12, so that the flattop surface 31a and the firsttop surface 31a are exposed. Theconnection port 12 can be easily cleaned.

この発明に係るコネクタに接続される針無し管体について説明する。この針無し管体は、内腔すなわち流体を収容する空間を内部に有していれば各種の管体が特に限定されず使用でき、その一例として、例えば、図１及び図２に示される針無し管体８１が挙げられる。この針無し管体８１の先端部８２は第１の接続口１２に接続可能な形状になっており、通常、第１の接続口１２の内径よりも僅かに小さな外径と内腔８１ａとを有する小径環状構造になっている。この先端部８２の外周面には第１の接続口１２に所望により形成されたルアーロックに螺合するルアー溝を有していてもよい。  A needleless tube connected to the connector according to the present invention will be described. As this needleless tube body, various tube bodies can be used without particular limitation as long as it has a lumen, that is, a space for containing a fluid therein. As an example, for example, the needle shown in FIGS. An example of thenon-pipe body 81 is given. Thedistal end portion 82 of the needlelesstubular body 81 has a shape that can be connected to thefirst connection port 12, and generally has an outer diameter slightly smaller than the inner diameter of thefirst connection port 12 and aninner cavity 81a. It has a small-diameter annular structure. The outer peripheral surface of thetip 82 may have a luer groove that engages with a luer lock formed in thefirst connection port 12 as desired.

コネクタ管及び針無し管体は通常剛性のある材料、例えば、各種樹脂、各種ガラス、各種セラミックス、各種金属で形成される。樹脂としては、例えば、ポリエチレン、ポリプロピレン、エチレン−プロピレン共重合体、エチレン−酢酸ビニル共重合体（ＥＶＡ）等のポリオレフィン、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリスチレン、ポリアミド、ポリイミド、ポリアミドイミド、ポリカーボネート、ポリ−（４−メチルペンテン−１）、アイオノマー、アクリル系樹脂、ポリメチルメタクリレート、アクリロニトリル−ブタジエン−スチレン共重合体（ＡＢＳ樹脂）、アクリロニトリル−スチレン共重合体（ＡＳ樹脂）、ブタジエン−スチレン共重合体、ポリエチレンテレフタレート（ＰＥＴ）、ポリブチレンテレフタレート（ＰＢＴ）、ポリシクロヘキサンテレフタレート（ＰＣＴ）等のポリエステル、ポリエーテル、ポリエーテルケトン（ＰＥＫ）、ポリエーテルエーテルケトン（ＰＥＥＫ）、ポリエーテルイミド、ポリアセタール（ＰＯＭ）、ポリフェニレンオキシド、変性ポリフェニレンオキシド、ポリサルフォン、ポリエーテルサルフォン、ポリフェニレンサルファイド、ポリアリレート、芳香族ポリエステル（液晶ポリマー）、ポリテトラフルオロエチレン、ポリフッ化ビニリデン、フッ素系樹脂、又はこれら樹脂を１種以上含むブレンド体、ポリマーアロイ等が挙げられる。  The connector tube and the needleless tube are usually formed of a rigid material, for example, various resins, various glasses, various ceramics, and various metals. Examples of the resin include polyolefins such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide, polyimide, polyamideimide, polycarbonate, Poly- (4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer Polyesters such as coalesce, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polycyclohexane terephthalate (PCT), polyether, polyether ketone (PEK), polyester Teretherketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide, polysulfone, polyethersulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyfluoride And vinylidene chloride, fluorine-based resins, blends containing one or more of these resins, and polymer alloys.

コネクタ１を介して患者に流体を供給するには、例えば図２に示されるように、針無し管体８１の先端部８２をコネクタ用弁体７の弾力に反して第１の接続口１２に圧入する。そうすると、コネクタ用弁体７の弁本体２１は針無し管体８１によって作用するコネクタ用弁体７の軸線Ｃ方向の押圧力で内部流路１５内に後退する。このとき、弁本体２１は高伸縮性支持部２３及び低伸縮性支持部２４で支持体２２に連結され、かつ高伸縮性支持部２３は低伸縮性支持部２４よりも伸長しやすく、低伸縮性支持部２４がテーパ面２２ｂに接続されているから、前記押圧力によって高伸縮性支持部２３が大きく伸長し、低伸縮性支持部２４がわずかに伸長して場合によっては上流側に凸になるように変形する。そうすると、図２に示されるように、弁本体２１は、下流側が支持体２２に近接し、上流側が支持体２２から離間するように軸線が傾斜して、傾倒する。弁本体２１は後退時にシール部３１は第１の接続口１２の内面、並びに、第３の接続口１４側の第１の環状拡径内面１７ａ及び第２の環状拡径内面１７ｂに案内される。このように弁本体２１が後退しながら傾倒すると、コネクタ用弁体７は、シール部３１が内部流路１５内に後退すると共に第１の接続口１２の軸線Ｃに対して自身の軸線が傾斜する第２姿勢に移行する。この第２姿勢において、シール部３１も第１の接続口１２から後退し、また第２のシール部３２も後退しているから、第１の接続口１２の密閉状態が解除される。一方、針無し管体８１の先端部８２は軸線Ｃに沿って第１の接続口１２に圧入されているから、図２に示されるように、先端部８２の先端面８３とシール部３１の平坦頂面３１ａとの間に空間８４が生じ、その結果、内腔８１ａと内部空間１５とが連通して第１の接続口１２が開放状態になる。そして、流体は針無し管体８１からコネクタ管５に注入され、次いで内部流路１５を経て第２の接続口１４に流入する。  In order to supply fluid to the patient via theconnector 1, for example, as shown in FIG. 2, thedistal end portion 82 of theneedleless tube 81 is connected to thefirst connection port 12 against the elasticity of theconnector valve 7. Press fit. Then, the valvemain body 21 of theconnector valve body 7 is retracted into theinternal flow path 15 by the pressing force in the direction of the axis C of theconnector valve body 7 acting by theneedleless tube body 81. At this time, thevalve body 21 is connected to thesupport 22 by a highstretch support portion 23 and a lowstretch support portion 24, and the highstretch support portion 23 is easier to extend than the lowstretch support portion 24 and has a low stretch. Since theelastic support portion 24 is connected to thetaper surface 22b, the highelastic support portion 23 is greatly extended by the pressing force, and the lowelastic support portion 24 is slightly extended to protrude upward in some cases. It transforms to become. Then, as shown in FIG. 2, thevalve body 21 tilts with the axis inclined so that the downstream side is close to thesupport 22 and the upstream side is separated from thesupport 22. When thevalve body 21 is retracted, theseal portion 31 is guided to the inner surface of thefirst connection port 12 and the first annular enlargedinner surface 17a and the second annular enlargedinner surface 17b on thethird connection port 14 side. . When thevalve body 21 is tilted while retreating as described above, theconnector valve body 7 retreats theseal portion 31 into theinternal flow path 15 and its own axis is inclined with respect to the axis C of thefirst connection port 12. To the second posture. In this second posture, theseal portion 31 is also retracted from thefirst connection port 12 and thesecond seal portion 32 is also retracted, so that the sealed state of thefirst connection port 12 is released. On the other hand, since thedistal end portion 82 of the needlelesstubular body 81 is press-fitted into thefirst connection port 12 along the axis C, as shown in FIG. 2, thedistal end surface 83 of thedistal end portion 82 and the seal portion 31A space 84 is formed between the flattop surface 31a, and as a result, thelumen 81a and theinternal space 15 communicate with each other and thefirst connection port 12 is opened. Then, the fluid is injected from theneedleless tube 81 into theconnector tube 5 and then flows into thesecond connection port 14 through theinternal flow path 15.

このようにして所望の流体をコネクタ１に注入した後に針無し管体８１を第１の接続口１２から抜脱すなわち退避すると、針無し管体８１により負荷された押圧力が解除されて、コネクタ用弁体７は高伸縮性支持部２３及び低伸縮性支持部２４の反発力又は復元力で弁本体２１を第１の接続口１２に向けて付勢し、圧入させて第１の接続口１２を密閉する第１姿勢に移行する。このとき、第２のシール部３２が第１の環状拡径内面１７ａ及び第２の環状拡径内面１７ｂの接続部に圧接していることはいうまでもない。ここで、高伸縮性支持部２３及び低伸縮性支持部２４は前記形状及び前記寸法等を有しているから、高伸縮性支持部２３及び低伸縮性支持部２４が弁本体２１の周方向に対称に配置されていなくても弁本体２１をその軸線Ｃ方向に沿って付勢してシール部３１を小径の第１の接続口１２に圧入させることができる。なお、シール部３１は前記形状に形成されているから第１姿勢に復帰する際に第１の接続口１２内に流体が残存しにくく、第１の接続口１２から流体の漏洩を防止できる。  When the needlelesstubular body 81 is removed from thefirst connection port 12 after the desired fluid has been injected into theconnector 1 in this way, that is, retracted, the pressing force applied by the needlelesstubular body 81 is released, and the connector Thevalve body 7 urges thevalve body 21 toward thefirst connection port 12 by the repulsive force or restoring force of the highstretch support portion 23 and the lowstretch support portion 24, and press-fits thevalve body 21 to the first connection port. It shifts to the 1st posture which seals 12. At this time, it goes without saying that thesecond seal portion 32 is in pressure contact with the connecting portion of the first annular enlargedinner surface 17a and the second annular enlargedinner surface 17b. Here, since the highstretch support portion 23 and the lowstretch support portion 24 have the shape and the dimensions, the highstretch support portion 23 and the lowstretch support portion 24 are arranged in the circumferential direction of thevalve body 21. Even if they are not symmetrically arranged, thevalve body 21 can be urged along the direction of the axis C to press-fit theseal portion 31 into thefirst connection port 12 having a small diameter. In addition, since theseal part 31 is formed in the said shape, when returning to a 1st attitude | position, a fluid does not remain easily in the1st connection port 12, and the leakage of the fluid from the1st connection port 12 can be prevented.

このようにコネクタ１は、針無し管体８１が第１の接続口１２に接続されていないときは第１姿勢すなわち密閉状態を保持し、針無し管体８１が第１の接続口１２に接続されているときは第２姿勢すなわち開放状態を保持すると共に、針無し管体８１が第１の接続口１２から抜脱された押圧力が解除されると密閉状態に移行する。したがって、コネクタ１は第１の接続口１２を高い初期シール性でしかも高い再シール性で密閉できるにもかかわらず流体の注入が容易で、加えて第１の接続口１２近傍の衛生面にも優れる。また、コネクタ１に収納されたコネクタ用弁体７はコネクタ１の密閉性、注入容易性及び衛生面に大きく貢献する。  Thus, theconnector 1 maintains the first posture, that is, the sealed state when theneedleless tube 81 is not connected to thefirst connection port 12, and theneedleless tube 81 is connected to thefirst connection port 12. When it is, the second posture, that is, the open state is maintained, and when the pressing force with which the needlelesstubular body 81 is removed from thefirst connection port 12 is released, the sealed state is entered. Therefore, although theconnector 1 can seal thefirst connection port 12 with a high initial sealing property and a high resealing property, fluid can be easily injected, and in addition, the sanitary surface in the vicinity of thefirst connection port 12 can be used. Excellent. Further, theconnector valve 7 housed in theconnector 1 greatly contributes to the sealing performance, ease of injection, and hygiene of theconnector 1.

この発明に係るコネクタとして、コネクタ管５とコネクタ用弁体７とを備えたコネクタ１を例に挙げて説明したが、コネクタ用弁体７に代えてこの発明に係るコネクタ用弁体の変形例であるコネクタ用弁体を備えたコネクタであっても、コネクタ１と基本的に同様に機能し、同様の効果を奏する。  As the connector according to the present invention, theconnector 1 including theconnector pipe 5 and theconnector valve body 7 has been described as an example. However, instead of theconnector valve body 7, the connector valve body according to the present invention is modified. Even a connector provided with a connector valve body functions basically the same as theconnector 1 and produces the same effect.

この発明に係るコネクタ用弁体及びこの発明に係るコネクタは、前記した例に限定されることはなく、本願発明の目的を達成することができる範囲において、種々の変更が可能である。  The connector valve body according to the present invention and the connector according to the present invention are not limited to the above-described examples, and various modifications can be made within a range in which the object of the present invention can be achieved.

例えば、コネクタ用弁体７の弁本体２１はシール部３１と第２のシール部３２と胴部３３とを備えているが、この発明において、弁本体はシール部と胴部とを備え、第２のシール部を備えていなくてもよい。この場合、コネクタ管は少なくとも第１の環状拡径内面を有していればよく、例えば第１の環状拡径内面１７ａのみを有している。  For example, thevalve body 21 of theconnector valve body 7 includes aseal portion 31, asecond seal portion 32, and abody portion 33. In this invention, the valve body includes a seal portion and a body portion. The two sealing portions may not be provided. In this case, the connector pipe only needs to have at least the first annular enlarged inner surface, for example, only the first annular enlargedinner surface 17a.

コネクタ用弁体７のシール部３１は平坦頂面３１ａを有しているが、この発明において、コネクタ用弁体のシール部は外側に膨出する膨出頂面を有していてもよく、平坦頂面又は膨出頂面に溝又は突起を有していてもよい。  Although theseal portion 31 of theconnector valve body 7 has a flattop surface 31a, in this invention, the seal portion of the connector valve body may have a bulging top surface that bulges outward, You may have a groove | channel or a processus | protrusion in a flat top surface or a bulging top surface.

コネクタ用弁体７の支持体２２は１つの円柱状体に形成されているが、この発明において、コネクタ用弁体の支持体は、弁本体の外周面の少なくとも一部を囲繞する少なくとも１つの壁体又は管状壁の一部であってもよく、支持体が複数である場合には軸線の周方向に間隔を空けて配置されていてもよい。  Although thesupport body 22 of theconnector valve body 7 is formed in one cylindrical body, in this invention, the support body of the connector valve body is at least one surrounding at least a part of the outer peripheral surface of the valve body. It may be a part of a wall or a tubular wall, and when there are a plurality of supports, they may be arranged at intervals in the circumferential direction of the axis.

また、コネクタ用弁体７の支持体２１は１つの欠落部２２ａを有しているが、この発明において、コネクタ用弁体の支持体は欠落部のない柱状体であってもよい。  Moreover, although thesupport body 21 of theconnector valve body 7 has one missingportion 22a, in this invention, the support body of the connector valve body may be a columnar body having no missing portion.

コネクタ用弁体７の高伸縮性支持部２３は棒状体として構成され、低伸縮性支持部２４は湾曲棒状体として構成されているが、この発明において、高伸縮性支持部及び低伸縮性支持部は、それぞれ、直線状の棒状体、湾曲棒状体又は壁状体のいずれであってもよい。また、低伸縮性支持部２４は下流側に凸となる湾曲棒状体として構成されているが、この発明において、低伸縮性支持部は高伸縮性支持部よりも伸縮しにくいのであれば形状は特に限定されず、例えば上流側に凸となる湾曲棒状体又は湾曲壁状体として構成されていてもよい。  The highstretch support portion 23 of theconnector valve body 7 is configured as a rod-shaped body, and the lowstretch support portion 24 is configured as a curved rod-shaped body. In the present invention, the high stretch support portion and the low stretch support portion are configured. Each of the parts may be any of a linear bar, a curved bar, or a wall. In addition, the lowstretch support portion 24 is configured as a curved rod-like body that protrudes on the downstream side.In this invention, if the low stretch support portion is less likely to stretch than the high stretch support portion, the shape is It does not specifically limit, For example, you may be comprised as a curved rod-shaped body or curved wall-shaped body which becomes convex on the upstream side.

コネクタ用弁体７の高伸縮性支持部２３及び低伸縮性支持部２４は共に弁本体２１の軸線Ｃに垂直な平面において軸線Ｃを中心とする中心角１８０°未満の領域内で弁本体２１及び支持体２２を連結しているが、この発明において、高伸縮性支持部及び低伸縮性支持部の少なくとも一方が前記領域内で連結されていればよい。  Both the highstretch support portion 23 and the lowstretch support portion 24 of theconnector valve body 7 are within the region of a central angle of less than 180 ° centered on the axis C in a plane perpendicular to the axis C of thevalve body 21. In the present invention, at least one of the high stretch support portion and the low stretch support portion may be connected within the region.

さらに、コネクタ用弁体７の高伸縮性支持部２３及び低伸縮性支持部２４は、いずれも、一つの半径方向に延在する１つの棒状体であるが、この発明において、高伸縮性支持部及び低伸縮性支持部は、複数、例えば２以上有していてもよく、また少なくとも２つ有する場合には、前記平面において弁本体の軸線との角度が０°以上１８０°未満の中心角で弁本体の周方向に離間して配置されていてもよい。  Furthermore, each of the highstretch support portion 23 and the lowstretch support portion 24 of theconnector valve body 7 is a single rod-like body extending in one radial direction. There may be a plurality of, for example, two or more, and two or more low-stretch support portions, and when there are at least two, the central angle at which the angle with the axis of the valve body in the plane is 0 ° or more and less than 180 ° And may be spaced apart in the circumferential direction of the valve body.

コネクタ用弁体７の低伸縮性支持部２４は、テーパ面２２ｂに接続しているが、この発明において、低伸縮性支持部は上流側に凸となる湾曲棒状体である場合には逆テーパ面２２ｃに接続しているのが好ましい。  The lowstretchable support portion 24 of theconnector valve body 7 is connected to the taperedsurface 22b. In the present invention, when the low stretchable support portion is a curved rod-like body projecting upstream, it is reversely tapered. It is preferably connected to thesurface 22c.

この発明において、図１及び図２に示されるコネクタ用弁体７の各要素と変形例としてのコネクタ用弁体の各要素とを適宜に組み合わせることができる。  In the present invention, each element of theconnector valve body 7 shown in FIGS. 1 and 2 and each element of the connector valve body as a modification can be appropriately combined.

コネクタ１は３つの接続口１２〜１４を有する混注管であるが、この発明においてコネクタは２つの接続口を有する注入管であってもよい。  Although theconnector 1 is a mixed injection pipe having threeconnection ports 12 to 14, in the present invention, the connector may be an injection pipe having two connection ports.

１ コネクタ
５ コネクタ管
５ａ 蓋体
５ｂ 管本体
７ コネクタ用弁体
１２ 第１の接続口
１３ 第２の接続口
１４ 第３の接続口
１５ 内部流路
１６ 支持体収納部
１６ａ 案内対向面
１７ 環状拡径内面
１７ａ 第１の環状拡径内面
１７ｂ 第２の環状拡径内面
２１ 弁本体
２２ 支持体
２２ａ 欠落部
２２ｂ テーパ面
２２ｃ 逆テーパ面
２３ 高伸縮性支持部
２４ 低伸縮性支持部
３１ シール部
３１ａ 平坦頂面
３２ 第２シール部
３３ 胴部
８１ 針無し管体
８１ａ 内腔
８２ 先端部
８４ 空間DESCRIPTION OFSYMBOLS 1Connector 5 Connector pipe |tube 5a Cover body5b Pipe body 7Connector valve body 121st connection port 132nd connection port 143rd connection port 15Internal flow path 16 Supportbody accommodating part 16aGuide opposing surface 17 Annular expansion Diameterinner surface 17a First annular enlargedinner surface 17b Second annular enlargedinner surface 21 Valvemain body 22Support body22a Missing portion 22b Taperedsurface 22c Reverse taperedsurface 23 Highelastic support portion 24 Lowelastic support portion 31Seal portion 31a Flattop surface 32Second seal portion 33Body 81Needlelesstube 81a Lumen 82Tip 84 Space

Claims (15)

Translated fromJapanese

管体を接続可能な少なくとも２つの接続口及びこれらの接続口を連通する内部流路を有するコネクタ管に収納されるコネクタ用弁体であって、
第１の前記接続口内に配置される逆錐台形状のシール部を有する弁本体と、
前記弁本体と離間して並設された支持体と、
前記弁本体及び前記支持体を連結し、前記弁本体を支持する少なくとも１つの高伸縮性支持部と、
前記弁本体の軸線方向において前記シール部に対して前記高伸縮性支持部よりも遠位かつ前記高伸縮性支持部と離間した位置で前記弁本体及び前記支持体を連結し、前記弁本体を支持する少なくとも１つの低伸縮性支持部とを備えていることを特徴とするコネクタ用弁体。A connector valve body housed in a connector pipe having at least two connection ports connectable to a tube body and an internal flow path communicating these connection ports,
A valve body having an inverted frustum-shaped seal portion disposed in the first connection port;
A support member disposed side by side with the valve body; and
Connecting the valve body and the support, and supporting at least one highly stretchable support for supporting the valve body;
Connecting the valve body and the support body at a position farther than the high stretchable support portion and spaced apart from the high stretchable support portion with respect to the seal portion in the axial direction of the valve body; A connector valve body comprising: at least one low stretch support portion for supporting. 前記高伸縮性支持部及び前記低伸縮性支持部の少なくとも一方は、前記弁本体の軸線に垂直な平面において前記軸線を中心とする中心角１８０°未満の領域内で前記弁本体に連結していることを特徴とする請求項１に記載のコネクタ用弁体。  At least one of the high stretch support portion and the low stretch support portion is connected to the valve body within a region having a central angle of less than 180 ° centered on the axis in a plane perpendicular to the axis of the valve body. The connector valve body according to claim 1, wherein: 前記高伸縮性支持部及び前記低伸縮性支持部は、前記弁本体の外周面のうち前記弁本体の軸線に沿う同一直線上に連結されていることを特徴とする請求項１又は２に記載のコネクタ用弁体。  The said high elastic support part and the said low elastic support part are connected on the same straight line in alignment with the axis line of the said valve main body among the outer peripheral surfaces of the said valve main body. Valve body for connectors. 前記高伸縮性支持部は、壁状体又は棒状体であることを特徴とする請求項１〜３のいずれか１項に記載のコネクタ用弁体。  The said highly elastic support part is a wall-shaped body or a rod-shaped body, The valve body for connectors of any one of Claims 1-3 characterized by the above-mentioned. 前記低伸縮性支持部は、前記シール部と反対側に凸となる湾曲壁状体又は湾曲棒状体であることを特徴とする請求項１〜４のいずれか１項に記載のコネクタ用弁体。  5. The connector valve body according to claim 1, wherein the low stretchable support portion is a curved wall-like body or a curved rod-like body that protrudes on the opposite side to the seal portion. . 前記高伸縮性支持部及び前記低伸縮性支持部の少なくとも一方は、少なくとも２つが、前記軸線方向に垂直な平面において前記弁本体の軸線との角度が０°以上１８０°未満の中心角で前記弁体の周方向に離間して配置されていることを特徴とする請求項１〜５のいずれか１項に記載のコネクタ用弁体。  At least one of the high stretch support part and the low stretch support part has at least two of the central angle that is 0 ° or more and less than 180 ° with respect to the axis of the valve body in a plane perpendicular to the axial direction. The connector valve body according to any one of claims 1 to 5, wherein the connector valve body is spaced apart in a circumferential direction of the valve body. 前記支持体は、前記弁本体に略並行に配置された少なくとも１つの柱状体、又は、前記弁本体の外周面の少なくとも一部を囲繞する少なくとも１つの扇状壁若しくは管状壁であることを特徴とする請求項１〜６のいずれか１項に記載のコネクタ用弁体。  The support body is at least one columnar body disposed substantially parallel to the valve body, or at least one fan-like wall or tubular wall surrounding at least a part of the outer peripheral surface of the valve body. The connector valve body according to any one of claims 1 to 6. 前記支持体は、前記高伸縮性支持部の連結位置よりも前記シール部の反対側に前記低伸縮性支持部が連結された切欠部を有していることを特徴とする請求項１〜７のいずれか１項に記載のコネクタ用弁体。  The said support body has a notch part with which the said low elastic support part was connected on the opposite side of the said seal part rather than the connection position of the said high elastic support part. The connector valve body according to any one of the above. 前記弁本体は、軸線方向に沿って前記シール部と錐台形状の第２シール部と胴部とが連設されていることを特徴とする請求項１〜８のいずれか１項に記載のコネクタ用弁体。  The said valve main body has the said seal part, the frustum-shaped 2nd seal part, and the trunk | drum connected along the axial direction, The any one of Claims 1-8 characterized by the above-mentioned. Valve body for connectors. 前記弁本体、前記高伸縮性支持部、前記低伸縮性支持部及び前記支持体は、弾性材料で一体成形された一体成形体であることを特徴とする請求項１〜９のいずれか１項に記載のコネクタ用弁体。  The said valve main body, the said highly elastic support part, the said low elastic support part, and the said support body are the integrally molded bodies integrally molded with the elastic material, The any one of Claims 1-9 characterized by the above-mentioned. The valve body for connectors as described in 2. 管体を接続可能な少なくとも２つの接続口及びこれらの接続口を連通する内部流路を有するコネクタ管と、前記シール部が第１の前記接続口内に配置されるように前記コネクタ管に収納された請求項１〜１０のいずれか１項に記載のコネクタ用弁体とを備え、
前記コネクタ用弁体は、前記シール部が第１の前記接続口を密閉する第１姿勢と前記シール部が前記内部流路側に後退すると共に前記第１の接続口の軸線に対して自身の軸線が傾斜する第２姿勢とに移行可能になっていることを特徴とするコネクタ。A connector tube having at least two connection ports connectable to a tube body and an internal flow path communicating these connection ports, and the seal portion are housed in the connector tube so as to be disposed in the first connection port. The connector valve body according to any one of claims 1 to 10,
The connector valve body has a first posture in which the seal portion seals the first connection port, and the seal portion is retracted toward the internal flow path and has its own axis with respect to the axis of the first connection port. The connector is characterized in that it can be shifted to a second posture in which is inclined. 前記コネクタ管は、前記第１の接続口の軸線方向に沿って前記第１の接続口に隣接配置された前記内部流路と、前記内部流路に並設された支持体収納部とを有していることを特徴とする請求項１１に記載のコネクタ。  The connector pipe includes the internal channel disposed adjacent to the first connection port along the axial direction of the first connection port, and a support housing portion provided in parallel with the internal channel. The connector according to claim 11, wherein the connector is provided. 前記支持体収納部は、前記軸線方向に延在し、前記高伸縮性支持部及び前記低伸縮性支持部を挟持してその変形を案内する案内対向面を有していることを特徴とする請求項１２に記載のコネクタ。  The support housing portion has a guide facing surface that extends in the axial direction and sandwiches the high stretch support portion and the low stretch support portion to guide the deformation thereof. The connector according to claim 12. 前記コネクタ管は、前記軸線方向に沿って前記第１の接続口に連設され、前記軸線方向に向かって内径が徐々に大きくなる環状拡径内面を有していることを特徴とする請求項１１〜１３のいずれか１項に記載のコネクタ。  The said connector pipe | tube is connected to the said 1st connection port along the said axial direction, and has the cyclic | annular enlarged inner surface where an internal diameter becomes large gradually toward the said axial direction. The connector according to any one of 11 to 13. 前記コネクタは、少なくとも３つの前記接続口を有する前記コネクタ管を備えた混注管であることを特徴とする請求項１１〜１４のいずれか１項に記載のコネクタ。  The connector according to any one of claims 11 to 14, wherein the connector is a mixed injection tube including the connector tube having at least three connection ports.

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