JP4577545B2 - MEDICAL LINKAGE AND ITS MANUFACTURING METHOD - Google Patents

MEDICAL LINKAGE AND ITS MANUFACTURING METHOD Download PDF

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JP4577545B2
JP4577545B2 JP2001082885A JP2001082885A JP4577545B2 JP 4577545 B2 JP4577545 B2 JP 4577545B2 JP 2001082885 A JP2001082885 A JP 2001082885A JP 2001082885 A JP2001082885 A JP 2001082885A JP 4577545 B2 JP4577545 B2 JP 4577545B2
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female member
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tube
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JP2002282369A (en
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実 岩田
忠 沖山
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JMS Co Ltd
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JMS Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、異なる２種の材質からなる可撓性チューブ同士を、安価且つ簡易な方法により接続した医療用連結体に関するものであり、また、嵌合により接続して得られる医療用連結体の改良に関するものである。
【０００２】
【従来の技術】
輸液セット、輸血セット、血液回路、ＣＡＰＤシステム等の医療器具には液体を送る送液用チューブとして、可撓性のプラスチックチューブが多く使用されている。さらにこれらの可撓性チューブを繋ぐ手段として硬質合成樹脂製の管状部材が使用されている。これらの管状部材には、ポリカーボネート製のものが多く使用されている。ポリカーボネート製の管状部材は可撓性チューブとして多用されている塩化ビニル樹脂製のチューブとブロッキング接着または溶剤接着等の簡易かつ安価な接続方法によって接続が可能であるからである。
【０００３】
しかしながら、異なる材質のチューブを一つの管状部材の両端に接続する場合、両チューブとも同様の方法で接続したのでは、各チューブの接着特性の相違により十分な接続強度が得られないことがある。例えば、ポリカーボネート製管状部材の両端に塩化ビニル樹脂製のチューブとポリオレフィン製チューブを接続する場合に、塩化ビニル樹脂製チューブとポリカーボネート製管状部材間については、溶剤接着又はブロッキングによる接合で十分な接続強度を得ることができるが、ポリオレフィン製チューブとポリカーボネート製管状部材間については、十分な接続強度を得ることができない。そのため、ポリオレフィン製チューブとポリカーボネート製管状部材間については、作業効率の悪いＵＶ接着剤やエポキシ樹脂剤を用いて接着するか、収縮チューブやリング状のバンドで接続部位を締め付けることが行われているが、高価になり、製造工程が複雑になるという問題点がある。
【０００４】
【発明が解決しようとする課題】
かかる問題を解決する方法として、塩化ビニル樹脂製チューブ又はポリオレフィン製のチューブと、溶剤接着性又はブロッキング接着性が良好な樹脂を１種づつ選択しこれらの２種の樹脂を２色成形やインサート成形等して管状部材を成形し、当該管状部材にチューブを接続する方法が検討されている。しかしながら、２種の樹脂の成形収縮率、熱収縮率、樹脂極性等が異なるため、管状部材に負荷が加わった際に樹脂の境界面が剥離する恐れがある。また設備費用が高額となり少量生産製品には不向きである。
【０００５】
本発明は、異なる材質の可撓性チューブを接続した医療用連結体について、簡易な方法により製造可能であり、またより安全性に優れた医療用連結体を提供することを目的とする。
【０００６】
【課題を解決するための手段】
即ち、本発明にかかる医療用連結体は、雄部材と雌部材が嵌合により接続され、該雄部材基端側と雌部材基端側のそれぞれにチューブが接続された医療用連結体において、前記雄部材がポリカーボネート製で、且つ前記雌部材がポリプロピレン製であり、前記雄部材基端側に接続されるチューブが、塩化ビニル樹脂、又はエチレン−酢酸ビニル共重合体製の可撓性チューブであり、雌部材基端側に接続されるチューブが、ポリオレフィン製の可撓性チューブであり、前記雄部材の外面又は雌部材の内壁に形成された嵌合突起と前記雌部材の内壁又は該雄部材の外面に形成された嵌合溝とが嵌合掛止され、前記雄部材と該雄部材の基端側に接続されているチューブ、及び前記雌部材と該雌部材の基端側に接続されているチューブが、それぞれ少なくともブロッキング接着で固着され、雄部材に比べて熱収縮率が大きい材質から形成された前記雌部材が、前記雄部材に嵌合掛止した状態で加熱されたことを特徴とする医療用連結体である。
【０００７】
かかる構成とすることにより、雌部材と雄部材間の接続については、前記嵌合突起と嵌合溝の嵌入掛止により十分な接続強度及び気密性を得ることができ、一方、雄部材基端側、雌部材基端側と各チューブ間の接続については、接続方法として簡易な溶剤接着またはブロッキング接着によって各チューブの双方とも接続することができる。したがって、異なる材質のチューブを接続した医療用連結体を簡易な方法により製造可能である。特に、チューブをブロッキング接着により固着する場合には、雄部材、雌部材の嵌合掛止とチューブの外挿を含めた医療用連結体の組立工程の後、熱処理を行うだけで接続強度及び気密性の良好な医療用連結体を得る事ができる。また、材質の異なる可撓性チューブを別々の接続方法によることなく、共通の方法（ブロッキング接着）によって各基端側に接続可能であり、また該方法が簡易な方法として知られるブロッキング接着によることから、作業効率が極めて良く、製造工程が簡略化され、しいては安価な医療用連結体を提供することができる。
【０００９】
本発明にかかる医療用連結体とは逆に、雄部材の熱収縮率が雌部材の熱収縮率より大きいと、前記のブロッキング接着のための熱処理や、滅菌処理の際に医療用連結体に加わる熱によって、雄部材が雌部材以上に収縮し、雄部材と雌部材間に隙間が生じて気密が保持されないこととなるが、雌部材の材質を雄部材にそれに比べて熱収縮率の大きい材質から形成することにより、熱処理により熱収縮率の大きい雌部材が雄部材を外周から締め付けることとなるため、熱処理工程を経た後においても、嵌合掛止時の気密性を保持することができ安全性に優れた医療用連結体を提供することができるからである。
【００１２】
雄部材と雌部材が嵌合により接続され、該雄部材基端側と雌部材基端側のそれぞれにチューブが接続された医療用連結体において、前記雄部材がポリカーボネート製で、且つ前記雌部材がポリプロピレン製であり、前記雄部材基端側に接続されるチューブが、塩化ビニル樹脂、又はエチレン−酢酸ビニル共重合体製の可撓性チューブであり、雌部材基端側に接続されるチューブが、ポリオレフィン製の可撓性チューブであり、前記雄部材の外面又は雌部材の内壁に形成された嵌合突起と前記雌部材の内壁又は該雄部材の外面に形成されたは前記嵌合突起を収容する嵌合溝とが嵌合掛止され、前記雄部材と該雄部材の基端側に接続されているチューブ、及び前記雌部材と該雌部材の基端側に接続されているチューブが、それぞれ少なくともブロッキング接着で固着され、雄部材に比べて熱収縮率が大きい材質から形成された前記雌部材が、前記雄部材に嵌合掛止した状態で加熱される医療用連結体の製造方法において、前記雄部材と雌部材を強制嵌合する工程と、前記雄部材基端側に第１のチューブを接続する工程と、前記雌部材基端側に第２のチューブを接続する工程によって医療用連結体を組立てた後に、該医療用連結体を熱処理する工程を有することを特徴とする医療用連結体の製造方法である。
【００１３】
また、本発明にかかる医療用連結体の製造方法は、前記熱処理が、滅菌処理であることを特徴とするものである。
【００１４】
【発明の実施の形態】
以下、図１〜図５を参照して、本発明の一実施形態にかかる医療用連結体について詳細に説明する。
【００１５】
図１は本実施形態の発明にかかる医療用連結体の断面図であり、図２は図１に示す医療用連結体に使用される雄部材の断面図、図３は図１に示す医療用連結体に使用される雌部材の断面図である。
【００１６】
図１中の１は雌部材であり、３は雄部材であり、雌部材１と雄部材３にはそれぞれ可撓性チューブ２、４によって外挿される基端部１１、３１が形成されている。
【００１７】
本実施態様においては、雄部材３がポリカーボネート、雌部材１がポリプロピレンから形成されるものである。また、雄部材３の基端側に外挿されるチューブ４は塩化ビニル樹脂又はエチレン−酢酸ビニル共重合体製の可撓性チューブであり、雌部材１の基端側に外挿されるチューブ２は可撓性のポリエチレン、ポリプロピレン等のポリオレフィン製の可撓性チューブである。塩化ビニル樹脂又はエチレン−酢酸ビニル共重合体製の可撓性チューブとポリカーボネート製の雄部材、ポリオレフィン系樹脂製の可撓性チューブとポリプロピレン製の雌部材は、それぞれブロッキング接続が可能である。
【００１８】
したがって、雌部材１と雄部材３を強制嵌合した後、ポリオレフィン製の可撓性チューブ２をポリプロピレン製の雌部材１に外挿し、塩化ビニル樹脂又はエチレン−酢酸ビニル共重合体製の可撓性チューブ４をポリカーボネート製の雄部材３に外挿し、材料の融点より低い温度域にて加熱することにより、可撓性チューブ２と雌部材１、可撓性チューブ４と雄部材３とを一工程で接続することができる。また、加熱温度を、材料の融点より低く且つ滅菌可能な温度域とすれば、医療用連結体の全ての結合部の接合と滅菌処理とを一工程で行うことができ、極めて簡易な方法で、且つ安価な医療用連結体を得る事ができる。
【００１９】
また本実施態様にかかる医療用連結体は、ポリプロピレン製の雌部材１はポリカーボネート製の雄部材３より熱処理後の収縮の程度（「熱収縮率」とも称する）が大きいため、熱処理後であっても、雌部材が雄部材を外側から締め付けるため、雌部材１と雄部材３との接合面に隙間が形成されることなく、熱処理前の気密性がより確実に維持され、より安全性の優れた医療用をすることができる。また、ポリカーボネート製の雄部材は、内側から外側方向への応力（引張応力）よりも、外側から内側方向の応力（圧縮応力）に対する破壊抵抗が大きい性質を有していることから、雄部材をポリカーボネート製とすることにより、耐クラック性を向上させることができる。
【００２０】
図２〜図５に示すように、雄部材３の外面には嵌合突起３２が形成されている。該嵌合突起３２の外形は接続開始側から基端部方向に向かってその外形がテーパー面３２ａ、水平面３２ｂ、垂直面３２ｃの順で構成されている。一方雌部材の内壁には前記嵌合突起を収容する嵌合溝１２が形成されているが、その内壁の外形は、前記管状突起と凸凹関係にある。即ち、接続開始側から基端部方向に向かって垂直面１２ａ 水平面１２ｂ テーパー面１２ｃが形成され突起３２の外形を被覆するような形態となっている。かかる形態とすることにより、雄部材及び雌部材の強制嵌合に際し、テーパー面３２ａによって雌部材の内壁が徐々に押し広げられるので、嵌合抵抗を小さくすることができ、また、強制嵌合による嵌合突起の破損の恐れを低減することができる。また、一旦強制嵌合された後、雌部材及び雄部材を引き離す方向へ引っ張られた場合においては、抵抗となる箇所が、接触面積が広い雌部材の垂直面３２ｃと雌部材の垂直面１２ｃであるため、容易に抜けることが無いようになっている。
【００２１】
【発明の効果】
上記のとおり、本発明にかかる医療用連結体は、雌部材と雄部材間の接続については、前記嵌合突起と嵌合溝の嵌入掛止により十分な接続強度及び気密性を得ることができ、一方、雄部材基端側、雌部材基端側と各チューブ間の接続については、接続方法として溶剤接着またはブロッキング接着によって各チューブの双方とも接続することができる。したがって、異なる材質のチューブを接続した医療用連結体を簡易な方法により製造することができる。
【００２２】
特に、チューブをブロッキング接着により固着する場合には、雄部材、雌部材の嵌合掛止と、チューブの外挿を含めた医療用連結体を組立てる工程の後、熱処理を行うだけで接続強度及び気密性の良好な医療用連結体を得る事ができる。また、材質の異なる可撓性チューブを別々の接続方法によることなく、共通の方法（ブロッキング接着）によって雄雌部材の各基端側に接続可能であり、また該方法が簡易な方法として知られる熱ブロッキング接着によることから、作業効率が極めて良く、製造工程が簡略化され、しいては安価な医療用連結体を提供することができる。
【００２３】
また本発明にかかる医療用連結体は、雌部材が雄部材に比べて熱収縮率が大きい材質から形成されることから、熱処理により熱収縮率の大きい雌部材が雄部材を外周から締め付けることとなるため、熱処理工程を経た後においても、嵌合掛止時の気密性を保持することができ安全性に優れた医療用連結体を提供することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態かかる医療用連結体の断面図である。
【図２】図１に示す医療用連結体の雄部材の断面図である。
【図３】雌部材の嵌合突起の拡大断面図である。
【図４】図１に示す医療用連結体の雌部材の断面図である。
【図５】雄部材の嵌合溝の拡大断面図である。
【符号の説明】
１． 雌部材
１１． 基端側
１２． 嵌合溝
１２ａ． テーパー面
１２ｂ． 水平面
１２ｃ． 垂直面
２． チューブ
３． 雄部材
３１． 基端側
３２． 嵌合突起
３２ａ． テーパー面
３２ｂ． 水平面
３２ｃ． 垂直面
４．チューブ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medical coupling body in which flexible tubes made of two different kinds of materials are connected by an inexpensive and simple method, and a medical coupling body obtained by connection by fitting. It is about improvement.
[0002]
[Prior art]
In medical devices such as an infusion set, a transfusion set, a blood circuit, and a CAPD system, a flexible plastic tube is often used as a tube for sending a liquid. Furthermore, as a means for connecting these flexible tubes, a tubular member made of hard synthetic resin is used. Many of these tubular members are made of polycarbonate. This is because a polycarbonate tubular member can be connected to a polyvinyl chloride resin tube, which is often used as a flexible tube, by a simple and inexpensive connection method such as blocking adhesion or solvent adhesion.
[0003]
However, when connecting tubes of different materials to both ends of one tubular member, if both tubes are connected by the same method, sufficient connection strength may not be obtained due to the difference in the adhesive properties of each tube. For example, when connecting a tube made of polyvinyl chloride resin and a tube made of polyolefin to both ends of a polycarbonate tubular member, the connection strength sufficient by solvent bonding or blocking between the polyvinyl chloride resin tube and the polycarbonate tubular member is sufficient. However, sufficient connection strength cannot be obtained between the polyolefin tube and the polycarbonate tubular member. Therefore, between the polyolefin tube and the polycarbonate tubular member, bonding is performed using a UV adhesive or an epoxy resin agent having poor work efficiency, or the connection portion is tightened with a shrink tube or a ring-shaped band. However, there is a problem that it becomes expensive and the manufacturing process becomes complicated.
[0004]
[Problems to be solved by the invention]
As a method for solving such a problem, a vinyl chloride resin tube or a polyolefin tube and a resin having a good solvent adhesive property or blocking adhesive property are selected one by one, and these two resins are two-color molded or insert molded. For example, a method of forming a tubular member and connecting a tube to the tubular member has been studied. However, since the molding shrinkage rate, thermal shrinkage rate, resin polarity, and the like of the two kinds of resins are different, there is a possibility that the boundary surface of the resin may be peeled off when a load is applied to the tubular member. In addition, the equipment cost is high, and it is not suitable for low-volume production products.
[0005]
It is an object of the present invention to provide a medical connector that can be manufactured by a simple method and is more excellent in safety with respect to a medical connector in which flexible tubes made of different materials are connected.
[0006]
[Means for Solving the Problems]
That is, in the medical connector according to the present invention, a male member and a female member are connected by fitting, and a tube is connected to each of the male member base end side and the female member base end side. The male member is made of polycarbonate, the female member is made of polypropylene, and the tube connected to the base end side of the male member is a flexible tube made of vinyl chloride resin or ethylene-vinyl acetate copolymer. And the tube connected to the proximal end of the female member is a flexible tube made of polyolefin, and the fitting protrusion formed on the outer surface of the male member or the inner wall of the female member and the inner wall of the female member or the male member. A fitting groove formed on the outer surface of the member is fitted and latched, and the male member and the tube connected to the proximal end side of the male member, and the female member and the proximal end side of the female member are connected. There are few tubes each Is fixed in Kutomo blocking adhesion, the female member formed of a material thermal shrinkage larger than that of the male member, a medical coupling, characterized in that it is heated while fitting hooked to the male member Is the body.
[0007]
By adopting such a configuration, with respect to the connection between the female member and the male member, sufficient connection strength and airtightness can be obtained by engaging and engaging the fitting protrusion and the fitting groove, while the male member base end As for the connection between the side, the female member base end side and each tube, both the tubes can be connected by simple solvent adhesion or blocking adhesion as a connection method. Therefore, it is possible to manufacture a medical connector in which tubes of different materials are connected by a simple method. In particular, when the tube is fixed by blocking adhesion, the connection strength and airtightness can be obtained simply by performing heat treatment after the assembly process of the medical connector including fitting engagement of the male member and female member and extrapolation of the tube. It is possible to obtain a medical connector having good properties. Also, flexible tubes of different materials can be connected to each proximal end by a common method (blocking adhesion) without using separate connection methods, and the method is based on blocking adhesion, which is known as a simple method Therefore, the working efficiency is very good, the manufacturing process is simplified, and an inexpensive medical connector can be provided.
[0009]
Contrary to the medical connector according to the present invention, when the thermal contraction rate of the male member is larger than the thermal contraction rate of the female member, the medical connector is subjected to the heat treatment for blocking adhesion and the sterilization treatment. Due to the applied heat, the male member contracts more than the female member and a gap is formed between the male member and the female member so that airtightness is not maintained, but the material of the female member is larger than that of the male member, and the thermal contraction rate is larger than that of the male member. By forming from a material, a female member with a large thermal contraction rate by heat treatment will tighten the male member from the outer periphery, so that the airtightness at the time of engagement can be maintained even after the heat treatment step. This is because a medical connector excellent in safety can be provided.
[0012]
In the medical coupling body in which a male member and a female member are connected by fitting, and a tube is connected to each of the male member base end side and the female member base end side, the male member is made of polycarbonate, and the female member Is made of polypropylene, and the tube connected to the base end side of the male member is a flexible tube made of vinyl chloride resin or ethylene-vinyl acetate copolymer and connected to the base end side of the female member Is a flexible tube made of polyolefin, and the fitting protrusion formed on the outer surface of the male member or the inner wall of the female member and the fitting protrusion formed on the inner wall of the female member or the outer surface of the male member And a tube connected to the base end side of the male member and the male member, and a tube connected to the base end side of the female member and the female member. But at least bro Fixed King adhesion, the female member formed of a material thermal shrinkage larger than that of the male member, in the production method of the male member to the medical coupling body to be heated by fitting hook state, the A medical connector by a step of forcibly fitting a male member and a female member, a step of connecting a first tube to the base end side of the male member, and a step of connecting a second tube to the base end side of the female member A method of manufacturing a medical connector, comprising: a step of heat-treating the medical connector after assembling.
[0013]
Moreover, the manufacturing method of the medical coupling body according to the present invention is characterized in that the heat treatment is a sterilization treatment.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to FIGS. 1-5, the medical coupling body concerning one Embodiment of this invention is demonstrated in detail.
[0015]
FIG. 1 is a cross-sectional view of a medical connector according to the present invention, FIG. 2 is a cross-sectional view of a male member used in the medical connector shown in FIG. 1, and FIG. 3 is a medical connector shown in FIG. It is sectional drawing of the female member used for a coupling body.
[0016]
In FIG. 1, 1 is a female member, 3 is a male member, and the female member 1 and the male member 3 are formed with base end portions 11 and 31 to be extrapolated by flexible tubes 2 and 4, respectively. .
[0017]
In this embodiment, the male member 3 is made of polycarbonate and the female member 1 is made of polypropylene. The tube 4 extrapolated to the base end side of the male member 3 is a flexible tube made of vinyl chloride resin or ethylene-vinyl acetate copolymer, and the tube 2 extrapolated to the base end side of the female member 1 is A flexible tube made of polyolefin such as flexible polyethylene or polypropylene. The flexible tube made of vinyl chloride resin or ethylene-vinyl acetate copolymer and a male member made of polycarbonate, and the flexible tube made of polyolefin resin and the female member made of polypropylene can be blocked.
[0018]
Therefore, after forcibly fitting the female member 1 and the male member 3, the flexible tube 2 made of polyolefin is extrapolated to the female member 1 made of polypropylene, and flexible made of a vinyl chloride resin or an ethylene-vinyl acetate copolymer. The flexible tube 4 is extrapolated to the male member 3 made of polycarbonate and heated in a temperature range lower than the melting point of the material, whereby the flexible tube 2 and the female member 1, and the flexible tube 4 and the male member 3 are combined. It can be connected in a process. In addition, if the heating temperature is lower than the melting point of the material and can be sterilized, it is possible to perform the joining and sterilization treatment of all the joints of the medical connector in one step, which is an extremely simple method. In addition, an inexpensive medical connector can be obtained.
[0019]
In the medical connector according to this embodiment, the female member 1 made of polypropylene has a higher degree of shrinkage after heat treatment (also referred to as “heat shrinkage rate”) than the male member 3 made of polycarbonate. However, since the female member clamps the male member from the outside, the airtightness before the heat treatment is more reliably maintained without forming a gap in the joint surface between the female member 1 and the male member 3, and the safety is further improved. Can be used for medical purposes. In addition, the male member made of polycarbonate has a property that the fracture resistance against the stress (compressive stress) from the outside to the inside direction (compressive stress) is larger than the stress (tensile stress) from the inside to the outside direction. Crack resistance can be improved by using polycarbonate.
[0020]
As shown in FIGS. 2 to 5, a fitting protrusion 32 is formed on the outer surface of the male member 3. The outer shape of the fitting protrusion 32 is composed of a tapered surface 32a, a horizontal surface 32b, and a vertical surface 32c in this order from the connection start side toward the base end portion. On the other hand, a fitting groove 12 for accommodating the fitting protrusion is formed on the inner wall of the female member, and the outer shape of the inner wall is in an uneven relationship with the tubular protrusion. That is, the vertical surface 12a, the horizontal surface 12b, and the tapered surface 12c are formed from the connection start side toward the base end portion so as to cover the outer shape of the protrusion 32. By adopting such a configuration, when the male member and the female member are forcibly fitted, the inner wall of the female member is gradually pushed and widened by the tapered surface 32a, so that the fitting resistance can be reduced. The risk of breakage of the fitting protrusion can be reduced. In addition, when the female member and the male member are pulled in the direction of being separated after being forcedly fitted, the resistance portions are the vertical surface 32c of the female member and the vertical surface 12c of the female member having a wide contact area. Therefore, it cannot be easily removed.
[0021]
【The invention's effect】
As described above, the medical coupling body according to the present invention can obtain sufficient connection strength and airtightness for the connection between the female member and the male member by fitting and engaging the fitting protrusion and the fitting groove. On the other hand, regarding the connection between the male member base end side, the female member base end side and each tube, both tubes can be connected by solvent bonding or blocking bonding as a connection method. Therefore, the medical coupling body in which tubes of different materials are connected can be manufactured by a simple method.
[0022]
In particular, when the tube is fixed by blocking adhesion, the connection strength and strength can be obtained simply by performing a heat treatment after the steps of assembling the medical connector including fitting engagement of the male member and female member and extrapolation of the tube. A medical connector having good airtightness can be obtained. In addition, flexible tubes of different materials can be connected to each base end side of the male and female members by a common method (blocking adhesion) without using different connection methods, and this method is known as a simple method. Due to the heat blocking adhesion, the working efficiency is extremely good, the manufacturing process is simplified, and an inexpensive medical connector can be provided.
[0023]
In the medical connector according to the present invention, since the female member is formed of a material having a larger thermal shrinkage rate than the male member, the female member having a higher thermal shrinkage rate is tightened from the outer periphery by heat treatment. Therefore, even after passing through the heat treatment step, it is possible to provide a medical connector body that can maintain airtightness when the fitting is engaged and is excellent in safety.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a medical connector according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a male member of the medical connector shown in FIG.
FIG. 3 is an enlarged cross-sectional view of a fitting projection of a female member.
4 is a cross-sectional view of a female member of the medical connector shown in FIG.
FIG. 5 is an enlarged cross-sectional view of a fitting groove of a male member.
[Explanation of symbols]
1. Female member 11. Base end side 12. Fitting groove 12a. Tapered surface 12b. Horizontal plane 12c. 1. Vertical plane Tube 3. Male member 31. Proximal side 32. Fitting protrusion 32a. Tapered surface 32b. Horizontal plane 32c. Vertical plane4. tube

Claims (4)

雄部材と雌部材が嵌合により接続され、該雄部材基端側と雌部材基端側のそれぞれにチューブが接続された医療用連結体において、前記雄部材がポリカーボネート製で、且つ前記雌部材がポリプロピレン製であり、前記雄部材基端側に接続されるチューブが、塩化ビニル樹脂、又はエチレン−酢酸ビニル共重合体製の可撓性チューブであり、雌部材基端側に接続されるチューブが、ポリオレフィン製の可撓性チューブであり、前記雄部材の外面又は雌部材の内壁に形成された嵌合突起と前記雌部材の内壁又は該雄部材の外面に形成された嵌合溝とが嵌合掛止され、前記雄部材と該雄部材の基端側に接続されているチューブ、及び前記雌部材と該雌部材の基端側に接続されているチューブが、それぞれ少なくともブロッキング接着で固着され、雄部材に比べて熱収縮率が大きい材質から形成された前記雌部材が、前記雄部材に嵌合掛止した状態で加熱されたことを特徴とする医療用連結体。In the medical coupling body in which a male member and a female member are connected by fitting, and a tube is connected to each of the male member base end side and the female member base end side, the male member is made of polycarbonate, and the female member Is made of polypropylene, and the tube connected to the base end side of the male member is a flexible tube made of vinyl chloride resin or ethylene-vinyl acetate copolymer and connected to the base end side of the female member Is a flexible tube made of polyolefin, and includes a fitting protrusion formed on the outer surface of the male member or the inner wall of the female member, and a fitting groove formed on the inner wall of the female member or the outer surface of the male member. The male member and the tube connected to the base end side of the male member, and the female member and the tube connected to the base end side of the female member are fixed at least by blocking adhesion, respectively. And The thermal shrinkage rate is formed from a large material than the member female member, a medical coupling body characterized in that said heated while fitting engaging the male member. 前記嵌合突起の外形が、接続開始側から基端部方向に向かって、テーパー面（３２ａ）、水平面（３２ｂ）、垂直面（３２ｃ）の順で形成されている請求項１に記載の医療用連結体。The external shape of the fitting protrusion is formed in the order of a tapered surface (32a), a horizontal surface (32b), and a vertical surface (32c) from the connection start side toward the proximal end portion. Connected body. 雄部材と雌部材が嵌合により接続され、該雄部材基端側と雌部材基端側のそれぞれにチューブが接続された医療用連結体において、前記雄部材がポリカーボネート製で、且つ前記雌部材がポリプロピレン製であり、前記雄部材基端側に接続されるチューブが、塩化ビニル樹脂、又はエチレン−酢酸ビニル共重合体製の可撓性チューブであり、雌部材基端側に接続されるチューブが、ポリオレフィン製の可撓性チューブであり、前記雄部材の外面又は雌部材の内壁に形成された嵌合突起と前記雌部材の内壁又は該雄部材の外面に形成されたは前記嵌合突起を収容する嵌合溝とが嵌合掛止され、前記雄部材と該雄部材の基端側に接続されているチューブ、及び前記雌部材と該雌部材の基端側に接続されているチューブが、それぞれ少なくともブロッキング接着で固着され、雄部材に比べて熱収縮率が大きい材質から形成された前記雌部材が、前記雄部材に嵌合掛止した状態で加熱される医療用連結体の製造方法において、前記雄部材と雌部材を強制嵌合する工程と、前記雄部材基端側に第１のチューブを接続する工程と、前記雌部材基端側に第２のチューブを接続する工程によって医療用連結体を組立てた後に、該医療用連結体を熱処理する工程を有することを特徴とする医療用連結体の製造方法。In the medical coupling body in which a male member and a female member are connected by fitting, and a tube is connected to each of the male member base end side and the female member base end side, the male member is made of polycarbonate, and the female member Is made of polypropylene, and the tube connected to the base end side of the male member is a flexible tube made of vinyl chloride resin or ethylene-vinyl acetate copolymer and connected to the base end side of the female member Is a flexible tube made of polyolefin, and the fitting protrusion formed on the outer surface of the male member or the inner wall of the female member and the fitting protrusion formed on the inner wall of the female member or the outer surface of the male member And a tube connected to the base end side of the male member and the male member, and a tube connected to the base end side of the female member and the female member. But at least bro Fixed King adhesion, the female member formed of a material thermal shrinkage larger than that of the male member, in the manufacturing method of the male member to the medical coupling body to be heated by fitting hook state, the A medical connector by a step of forcibly fitting a male member and a female member, a step of connecting a first tube to the base end side of the male member, and a step of connecting a second tube to the base end side of the female member A method of manufacturing a medical connector, comprising the step of heat-treating the medical connector after assembling. 前記熱処理が、滅菌処理であることを特徴とする請求項３に記載の医療用連結体の製造方法。The method of manufacturing a medical connector according to claim 3 , wherein the heat treatment is a sterilization treatment.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6329654A (en) * 1986-07-22 1988-02-08 テルモ株式会社 Tube body equipped with separable plug body
JPH0286552U (en) * 1988-12-26 1990-07-09
JPH0363063A (en) * 1989-07-31 1991-03-19 Terumo Corp Medical device
JPH1094599A (en) * 1996-09-25 1998-04-14 Advance Co Ltd Medical coupler and cap therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6329654A (en) * 1986-07-22 1988-02-08 テルモ株式会社 Tube body equipped with separable plug body
JPH0286552U (en) * 1988-12-26 1990-07-09
JPH0363063A (en) * 1989-07-31 1991-03-19 Terumo Corp Medical device
JPH1094599A (en) * 1996-09-25 1998-04-14 Advance Co Ltd Medical coupler and cap therefor

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