JP4647365B2 - Medical connection device - Google Patents

Medical connection device Download PDF

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JP4647365B2
JP4647365B2 JP2005101285A JP2005101285A JP4647365B2 JP 4647365 B2 JP4647365 B2 JP 4647365B2 JP 2005101285 A JP2005101285 A JP 2005101285A JP 2005101285 A JP2005101285 A JP 2005101285A JP 4647365 B2 JP4647365 B2 JP 4647365B2
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tube
locking
connection
tube member
pipe
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JP2006280452A (en
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努 大和
延嘉 藤原
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日本シャーウッド株式会社
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Priority to JP2005101285A priority Critical patent/JP4647365B2/en
Priority to PCT/EP2006/002909 priority patent/WO2006103074A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M39/1011Locking means for securing connection; Additional tamper safeties
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M2039/1027Quick-acting type connectors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M2039/1072Tube connectors; Tube couplings with a septum present in the connector
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/04Access sites having pierceable self-sealing members
    • A61M39/045Access sites having pierceable self-sealing members pre-slit to be pierced by blunt instrument

Description

本発明は、薬液や血液などの各種医療用液体の流通が可能な医療用の接続器具に関するものである。   The present invention relates to a medical connection device capable of distributing various medical liquids such as chemical liquids and blood.

輸液ラインなどを構成する医療用の接続器具において、接続部に感染防止機能や針刺事故防止機能を備えたクローズドシステムが用いられている。例えば、三方活栓の雌コネクタの注入孔部に、雄コネクタの管が挿通可能な感染防止用のいわゆるセプタムと称されるゴムなどの弾性体を設け、この雌コネクタ側のセプタムに雄コネクタの管を挿入することで、接続がなされるようになっている医療用の接続器具がある。   In a medical connection instrument constituting an infusion line or the like, a closed system having an infection prevention function and a needlestick accident prevention function at a connection portion is used. For example, an elastic body such as a so-called septum for preventing infection through which the male connector tube can be inserted is provided in the injection hole of the female connector of the three-way cock, and the male connector tube is provided on the septum on the female connector side. There is a medical connection device in which a connection is made by inserting.

上記のような医療用の接続器具において、雌コネクタと雄コネクタの連結の外れ防止策として、ネジを利用した締結によるものがあった(例えば、特許文献1参照)。   In the medical connection device as described above, as a measure for preventing the disconnection of the connection between the female connector and the male connector, there is a method using fastening using screws (for example, see Patent Document 1).

特表平8−500983号公報(第2頁、図2)JP-T-8-500983 Publication (2nd page, Fig. 2)

しかしながら、上記の場合、ネジの締結を緩める方向にトルクが働いた場合には、雌コネクタと雄コネクタの連結が外れ易くなる虞がある。特に、コネクタにかかるトルクが大きくなるときは、雌コネクタと雄コネクタの連結が外れる可能性が高くなる。   However, in the above case, when a torque acts in the direction of loosening the screw, there is a risk that the connection between the female connector and the male connector is likely to be disconnected. In particular, when the torque applied to the connector increases, the possibility that the female connector and the male connector are disconnected increases.

本発明は上記課題を解決するためになされたもので、医療用の接続器具において、その接続をより強固なものにできる接続器具を提案することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to propose a connection device that can make the connection stronger in a medical connection device.

本発明に係る医療用の接続器具は、液体を通すことが可能な第1の管部材と液体を通すことが可能な第2の管部材を備え、前記第1の管部材は、液体の流通が可能な流通管と、前記流通管と同軸に前記流通管の外側に形成され前記流通管に繋がった外筒体とを有し、前記外筒体の先端周縁部には前記第2の管部材を係止する溝で画定された係止部が周方向に対向配置され、前記係止部には管軸方向の力に対応する係止面と該係止面から延設され周方向の力に対応する鉤面とが形成されており、前記第2の管部材は、前記第1の管部材の外筒体内側に挿入可能な接続筒部と、前記接続筒部の外周面上に対向配置された前記溝内に挿入される突起であって前記係止面と前記鉤面とにそれぞれ係合可能な2つの面を有した突起と、前記接続筒部の内部に形成された前記第1の管部材の流通管先端部を収容可能な収容部と、前記収容部に連通する連通部とが備えられ、
前記鉤面及び前記係止面と前記突起との互いの係合面が互いに直線状に接合されるように直線状に形成されており、前記突起の前記2つの面の交点に対向する外周部が面取りされ、前記溝の前記面取りされた外周部に対向する部位が弧状に凹んで形成されている、医療用の接続器具。
The medical connection instrument according to the present invention includes a first tube member capable of passing a liquid and a second tube member capable of passing a liquid, and the first tube member is configured to distribute liquid. A circulation pipe, and an outer cylinder formed on the outer side of the circulation pipe coaxially with the circulation pipe and connected to the circulation pipe, and the second pipe is disposed at a peripheral edge of the distal end of the outer cylinder A locking portion defined by a groove for locking the member is disposed oppositely in the circumferential direction . The locking portion has a locking surface corresponding to a force in the tube axis direction, and extends from the locking surface in the circumferential direction. A flange surface corresponding to the force is formed, and the second tube member is connected to the connection tube portion that can be inserted inside the outer tube body of the first tube member, and on the outer peripheral surface of the connection tube portion. a protrusion having the locking surface and the two surfaces respectively engageable with the鉤面a protrusion which is inserted into oppositely disposed within said groove, of the connecting tube portion And can accommodate accommodating section flow tube tip of the formed said first tubular member, the communicating portion communicating with the are provided on the housing part,
An outer peripheral portion that is formed in a straight line so that the engagement surfaces of the flange surface , the locking surface, and the protrusion are linearly joined to each other, and that is opposed to the intersection of the two surfaces of the protrusion. Is a chamfered portion, and a portion facing the chamfered outer peripheral portion of the groove is formed to be recessed in an arc shape .

なお、前記係止面と前記鉤面とが鋭角な角度を構成して形成されており、前記突起が前記係止面と前記鉤面の双方に接しつつ嵌合する形状を有しているのが好ましい。
また、前記第1の管部材又は前記第2の管部材の少なくとも一方に、前記2つの管部材が連結された際に前記突起を前記係止面へ押圧する方向に付勢する弾性体を備えるのが好ましい。
The locking surface and the flange surface are formed with an acute angle, and the protrusion has a shape that fits in contact with both the locking surface and the flange surface. Is preferred.
Further, at least one of the first tube member and the second tube member is provided with an elastic body that urges the protrusion in a direction to press the protrusion against the locking surface when the two tube members are connected. Is preferred.

本発明に係る医療用の接続器具によれば、第1の管部材と第2の管部材とは、係止部と突起の嵌合により連結することが可能である。そして、第1の管部材と第2の管部材の連結状態においては、それらの接続力を緩める方向にトルクが働いた場合でも、第1の管部材の鉤面と第2の管部材の突起との直線状接合の係合により、それらの嵌合が外れ難くなり、接続器具の接続が安定する。
また、前記係止面と前記鉤面とが鋭角な角度を構成して形成され、前記突起が前記係止面と前記鉤面の双方に接しつつ嵌合していることにより、第1の管部材と第2の管部材の係合がより強固なものとなる。
さらに、第1の管部材と第2の管部材との対向部に配置された弾性体により、突起が係止面側へ付勢されるため、第1の管部材と第2の管部材の係合がより強固なものとなる。
According to the medical connection instrument of the present invention, the first tube member and the second tube member can be coupled by fitting the locking portion and the protrusion. And in the connection state of the 1st pipe member and the 2nd pipe member, even when torque acts in the direction which loosens those connection forces, the projection of the 1st pipe member and the projection of the 2nd pipe member By the engagement of the linear joint, it becomes difficult to disengage them, and the connection of the connecting device is stabilized.
Further, the locking surface and the flange surface are formed so as to form an acute angle, and the protrusion is fitted while being in contact with both the locking surface and the flange surface, whereby the first tube The engagement between the member and the second tube member becomes stronger.
Furthermore, since the protrusion is biased toward the locking surface by the elastic body arranged at the facing portion between the first tube member and the second tube member, the first tube member and the second tube member Engagement becomes stronger.

以下、本発明の実施形態を図面と共に説明する。図1は本発明の実施形態に係る医療用の接続器具の接続状態を示す図、図2は図1の接続器具の分解図である。図1及び図2に示すように、本実施形態の医療用の接続器具1は、液体流路の接続部を構成する合成樹脂などからなる第1の管部材100と第2の管部材200を備え、これら2つの管部材100,200が接続されて利用に供される。なお、この接続器具1は、薬液、栄養剤、抗癌剤、生理食塩水、血液などの各種医療用液体を通すのに用いることができる。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a connection state of a medical connection device according to an embodiment of the present invention, and FIG. 2 is an exploded view of the connection device of FIG. As shown in FIGS. 1 and 2, the medical connection instrument 1 of the present embodiment includes a first tube member 100 and a second tube member 200 made of synthetic resin or the like that constitute a connection portion of a liquid flow path. These two pipe members 100 and 200 are connected and used. The connecting device 1 can be used to pass various medical liquids such as a chemical solution, a nutrient, an anticancer agent, physiological saline, and blood.

図3は図1の接続器具1を構成する第1の管部材100の上面図(a)、側面図(b)、断面図(c)である。
第1の管部材100は、流路を形成し薬液などの液が通る管すなわち流通管10と、流通管10と同軸に流通管10の外側に形成された外筒体20を備える。
FIG. 3 is a top view (a), a side view (b), and a cross-sectional view (c) of the first tube member 100 constituting the connection device 1 of FIG.
The first pipe member 100 includes a pipe that forms a flow path and through which a liquid such as a chemical solution passes, that is, a circulation pipe 10, and an outer cylindrical body 20 that is formed coaxially with the circulation pipe 10 and outside the circulation pipe 10.

流通管10は、チューブ、カテーテルあるいはシリンジなどに接続される円筒状の基管部11と、第2の管部材200の流路との接続に供される接続管部12と、基管部11と接続管部12を繋ぐ中間管部13からなっている。
外筒体20は、底部21を有し、その底部21は基管部11と接続管部12との連結部付近で流通管10に繋がっている。そして外筒体20の先端は、流通管10の接続管部12の先端部近くまで延びている。
The flow tube 10 includes a cylindrical base tube portion 11 connected to a tube, a catheter, a syringe, or the like, a connection tube portion 12 provided for connection to a flow path of the second tube member 200, and a base tube portion 11. And an intermediate pipe part 13 connecting the connection pipe part 12.
The outer cylinder 20 has a bottom portion 21, and the bottom portion 21 is connected to the flow pipe 10 in the vicinity of the connecting portion between the base tube portion 11 and the connecting tube portion 12. The distal end of the outer cylindrical body 20 extends to the vicinity of the distal end portion of the connection pipe portion 12 of the flow pipe 10.

外筒体20の先端周縁部22には、第2の管部材200を係止して連結するための溝23で画定された係止部26が設けられている。この係止部26は、管軸方向の力に対応する係止面24と、この係止面24からフック状に延設され周方向(管径方向)の力に対応する鉤面25とから形成されている。鉤面25の後述する突起51との係合面は直線状に形成するものとし、さらに、係止面24と鉤面25とが鋭角な角度を構成して形成されているのが好ましい。また、係止面24は、管軸方向の引張力に対応することができるように、管軸方向とほぼ直交するように形成されているのが好ましい。
なお、係止部26は、外筒体20の先端周縁部22の対向する位置に少なくとも2つ設けるものとする。
A locking portion 26 defined by a groove 23 for locking and connecting the second tube member 200 is provided at the distal end peripheral portion 22 of the outer cylindrical body 20. The locking portion 26 includes a locking surface 24 corresponding to a force in the tube axis direction, and a flange surface 25 extending from the locking surface 24 in a hook shape and corresponding to a force in the circumferential direction (tube diameter direction). Is formed. It is preferable that the engagement surface of the flange surface 25 with a projection 51 described later is formed in a straight line, and that the locking surface 24 and the flange surface 25 are formed with an acute angle. Moreover, it is preferable that the locking surface 24 is formed so as to be substantially orthogonal to the tube axis direction so as to correspond to the tensile force in the tube axis direction.
It should be noted that at least two locking portions 26 are provided at positions facing the distal end peripheral edge portion 22 of the outer cylinder 20.

図4は図1の接続器具1を構成する第2の管部材200の上面図(a)、側面図(b)、正面図(c)であり、図5は第2の管部材200の断面図である。
第2の管部材200は、第1の管部材100の外筒体20内側に挿入可能な接続筒部50、接続筒部50の内側に形成された第1の管部材100の流通管10である接続管部12の先端部を収容可能な収容部60と、収容部60に連通する連通部70,80,90を備える。各連通部70,80,90は、チューブ、カテーテルあるいはシリンジなどに連結可能となっている。なお、連通部は必ずしも3個ある必要はなく、少なくとも1個備えられていればよい。
4 is a top view (a), a side view (b), and a front view (c) of the second tube member 200 constituting the connection device 1 of FIG. 1, and FIG. 5 is a cross-section of the second tube member 200. FIG.
The second tube member 200 is a connection tube portion 50 that can be inserted inside the outer tube body 20 of the first tube member 100, and a flow tube 10 of the first tube member 100 formed inside the connection tube portion 50. A housing portion 60 capable of housing the distal end portion of a certain connecting pipe portion 12 and communication portions 70, 80, 90 communicating with the housing portion 60 are provided. Each communication part 70, 80, 90 can be connected to a tube, a catheter, a syringe or the like. Note that the number of communication portions is not necessarily three, and it is sufficient that at least one communication portion is provided.

接続筒部50の外周面には、第1の管部材100の係止部26に嵌合可能で、鉤面25に係合可能な突起51が少なくとも2つ設けられている。突起51の第1の管部材100の鉤面25との係合面は、両者が直線状に接合できるように直線状に形成する。さらに、突起51は、第1の管部材100の係止面24と鉤面25の双方に接しつつそれらに嵌合する形状とするのが好ましい。   On the outer peripheral surface of the connecting tube portion 50, at least two protrusions 51 that can be fitted to the locking portion 26 of the first tube member 100 and can be engaged with the flange surface 25 are provided. The engaging surface of the protrusion 51 with the flange surface 25 of the first tube member 100 is formed in a straight line so that both can be joined in a straight line. Furthermore, it is preferable that the protrusion 51 has a shape that fits both the locking surface 24 and the flange surface 25 of the first tube member 100 while being in contact therewith.

接続筒部50の内側前部にはゴムなどの弾性体からなるセプタム53が充填され、保持部材55によって固定されている。セプタム53の中心部には、第1の管部材100の接続管部12を収容部60へ貫通させるためのスリット54が形成されている。セプタム53は、接続管部12の挿入の容易性と、接続管部12を引き抜いた後のシール性との両方を適切にする弾性力を有している。   A septum 53 made of an elastic material such as rubber is filled in the inner front portion of the connecting tube portion 50 and fixed by a holding member 55. A slit 54 is formed at the center of the septum 53 to allow the connecting tube portion 12 of the first tube member 100 to penetrate the housing portion 60. The septum 53 has an elastic force that makes both the ease of insertion of the connecting pipe portion 12 and the sealing performance after the connecting pipe portion 12 is pulled out appropriate.

以上の第1の管部材100と第2の管部材200は、図2の矢印で示すように連結されて、図1に示すような接続状態となる。すなわち、第1の管部材100の外筒体20内側に第2の管部材200の接続筒部50が挿入され、第1の管部材100の接続管部12が第2の管部材200のセプタム53を貫通して収容部60に収容された状態となっている。また、第1の管部材100の係止部26に第2の管部材200の突起51が嵌合され、係止部26の鉤面25と突起51とが直線状に接合して係合している。これにより、この直線状接合部分の長さの範囲で両部材100,200がずれても、それらの係合が外れることがなくなり、2つの部材100,200の接続がより安定する。
なお、図1に示した接続状態の接続器具1においては、流体は、第1の管部材100の流通管10を通り、その接続管部12から第2の管部材200の収容部60へ流れる。
The first pipe member 100 and the second pipe member 200 described above are connected as shown by the arrows in FIG. 2 and are connected as shown in FIG. That is, the connecting tube portion 50 of the second tube member 200 is inserted inside the outer tube 20 of the first tube member 100, and the connecting tube portion 12 of the first tube member 100 is connected to the septum of the second tube member 200. 53 is in a state of being accommodated in the accommodating portion 60. Further, the protrusion 51 of the second tube member 200 is fitted to the locking portion 26 of the first tube member 100, and the flange surface 25 of the locking portion 26 and the protrusion 51 are joined in a straight line and engaged. ing. Thereby, even if both members 100 and 200 are shifted within the range of the length of the linear joint portion, their engagement is not released, and the connection between the two members 100 and 200 is more stable.
In the connection device 1 in the connected state shown in FIG. 1, the fluid flows through the flow pipe 10 of the first pipe member 100 and flows from the connection pipe part 12 to the accommodating part 60 of the second pipe member 200. .

図6は第1の管部材100と第2の管部材200の接続時の係合状態を説明する図1のA部拡大図である。ここでは、第2の管部材200の方は突起51のみを表示してある。図6に示すように、係止部26に突起51が挿入され、係止部26の鉤面25と突起51とが直線状に接合して係合しているのは前述したとおりである。
これに加えて、係止部26の係止面24が管軸方向とほぼ直交する方向に直線状に形成されており、この係止面24に係合する突起51の面も直線上に形成されて、ここでも両者が直線状に接合して係合している。
またここでは、係止面24と鉤面25とが鋭角な角度を構成して形成されていて、突起51が係止面24と鉤面25の双方に密着状態に嵌合しているのが理解できる。
以上のような構成によれば、突起51が係止部26から一層外れ難くなるため、第1の管部材100と第2の管部材200の接続がさらに安定する。
FIG. 6 is an enlarged view of a portion A in FIG. 1 for explaining an engaged state when the first tube member 100 and the second tube member 200 are connected. Here, only the protrusion 51 is displayed on the second pipe member 200. As shown in FIG. 6, the protrusion 51 is inserted into the locking portion 26, and the flange surface 25 of the locking portion 26 and the protrusion 51 are linearly joined and engaged as described above.
In addition to this, the locking surface 24 of the locking portion 26 is formed in a straight line in a direction substantially perpendicular to the tube axis direction, and the surface of the protrusion 51 that engages with the locking surface 24 is also formed in a straight line. In this case as well, both are linearly joined and engaged.
Further, here, the locking surface 24 and the flange surface 25 are formed so as to form an acute angle, and the projection 51 is fitted in close contact with both the locking surface 24 and the flange surface 25. Understandable.
According to the configuration as described above, the protrusion 51 is more difficult to be detached from the locking portion 26, so that the connection between the first tube member 100 and the second tube member 200 is further stabilized.

さらに、第1の管部材100又は第2の管部材200の少なくとも一方に、これら2つの管部材が連結された際に突起51を係止部26、特にその係止面24に押圧又は密着する方向に付勢する弾性体を備えるのが好ましい。これにより、係止部26と突起51との係合がより強固になるからである。第2の管部材200の接続筒部50の内側前部に配置されたセプタム39はこの弾性体として作用している。
また、第1の管部材100の外筒体20の内側に接続管部12と同軸にコイルバネを配置して、そのコイルバネを第2の管部材200の接続筒部50に当接させるようにしても、セプタム39を配置したのと同様の効果を得ることができる。
Furthermore, when these two pipe members are connected to at least one of the first pipe member 100 or the second pipe member 200, the protrusion 51 is pressed or closely attached to the locking portion 26, particularly the locking surface 24 thereof. It is preferable to provide an elastic body that biases in the direction. This is because the engagement between the locking portion 26 and the protrusion 51 becomes stronger. The septum 39 disposed at the inner front portion of the connecting tube portion 50 of the second pipe member 200 acts as this elastic body.
In addition, a coil spring is arranged coaxially with the connection tube portion 12 inside the outer tube body 20 of the first tube member 100, and the coil spring is brought into contact with the connection tube portion 50 of the second tube member 200. In addition, the same effect as that of the septum 39 can be obtained.

以上説明したように、第1の管部材100と第2の管部材200とにより構成された医療用の接続器具1を利用すれば、第1の管部材100と第2の管部材200との接続がより強固になって、その接続力を緩める方向にトルクが働いた場合にも第1の管部材100と第2の管部材200との連結が外れ難くなる。従って、この接続器具1を、薬液、栄養剤、抗癌剤、生理食塩水、血液などを人に投与する場合などの接続部に使用することで、医療上の安全性が大きく向上する。   As described above, when the medical connecting device 1 configured by the first tube member 100 and the second tube member 200 is used, the first tube member 100 and the second tube member 200 are connected to each other. The connection between the first tube member 100 and the second tube member 200 is difficult to disconnect even when the connection becomes stronger and torque acts in the direction of loosening the connection force. Therefore, the medical safety is greatly improved by using the connection device 1 for a connection part such as when a drug solution, nutrient, anticancer agent, physiological saline, blood, or the like is administered to a person.

本発明の実施の形態に係る医療用の接続器具の接続状態を示す図。The figure which shows the connection state of the medical connection instrument which concerns on embodiment of this invention. 図1の接続器具の分解図。The exploded view of the connection instrument of FIG. 図1の接続器具を構成する第1の管部材の上面図、側面図、断面図。The top view of the 1st pipe member which comprises the connecting device of FIG. 1, a side view, and sectional drawing. 図1の接続器具を構成する第2の管部材の上面図、側面図、正面図。The top view of the 2nd pipe member which comprises the connecting device of FIG. 1, a side view, and a front view. 図1の接続器具を構成する第2の管部材の断面図。Sectional drawing of the 2nd pipe member which comprises the connecting device of FIG. 第1の管部材と第2の管部材の接続時の係合状態を説明する図1のA部拡大図。The A section enlarged view of FIG. 1 explaining the engagement state at the time of connection of a 1st pipe member and a 2nd pipe member.

符号の説明Explanation of symbols

1…医療用の接続器具、10…流通管、11…基管部、12…接続管部、13…中間管部、20…外筒体、21…底部、22…先端周縁部、23…溝、24…係止面、25…鉤面、26…係止部、50…接続筒部、51…突起、53…セプタム、54…スリット、55…保持部材、60…収容部、70,80,90…連通部、100…第1の管部材、200…第2の管部材。
DESCRIPTION OF SYMBOLS 1 ... Medical connection instrument, 10 ... Distribution pipe, 11 ... Base pipe part, 12 ... Connection pipe part, 13 ... Intermediate pipe part, 20 ... Outer cylindrical body, 21 ... Bottom part, 22 ... Tip peripheral part, 23 ... Groove , 24 ... locking surface, 25 ... saddle surface, 26 ... locking portion, 50 ... connecting tube portion, 51 ... projection, 53 ... septum, 54 ... slit, 55 ... holding member, 60 ... housing portion, 70, 80, 90 ... communication part, 100 ... 1st pipe member, 200 ... 2nd pipe member.

Claims (4)

液体を通すことが可能な第1の管部材と液体を通すことが可能な第2の管部材を備え、
前記第1の管部材は、液体の流通が可能な流通管と、前記流通管と同軸に前記流通管の外側に形成され前記流通管に繋がった外筒体とを有し、前記外筒体の先端周縁部には前記第2の管部材を係止する溝で画定された係止部が周方向に対向配置され、前記係止部には管軸方向の力に対応する係止面と該係止面から延設され周方向の力に対応する鉤面とが形成されており、
前記第2の管部材は、前記第1の管部材の外筒体内側に挿入可能な接続筒部と、前記接続筒部の外周面上に対向配置された前記溝内に挿入される突起であって前記係止面と前記鉤面とにそれぞれ係合可能な2つの面を有した突起と、前記接続筒部の内部に形成された前記第1の管部材の流通管先端部を収容可能な収容部と、前記収容部に連通する連通部とが備えられ、
前記鉤面及び前記係止面と前記突起との互いの係合面が互いに直線状に接合されるように直線状に形成されており、
前記突起の前記2つの面の交点に対向する外周部が面取りされ、前記溝の前記面取りされた外周部に対向する部位が弧状に凹んで形成されている、医療用の接続器具。
A first tube member capable of passing liquid and a second tube member capable of passing liquid;
The first pipe member includes a flow pipe capable of flowing a liquid, and an outer cylindrical body formed on the outer side of the flow pipe coaxially with the flow pipe and connected to the flow pipe. A locking portion defined by a groove for locking the second tube member is disposed opposite to the circumferential edge of the distal end of the tube, and a locking surface corresponding to a force in the tube axis direction is provided on the locking portion. A flange surface extending from the locking surface and corresponding to a circumferential force is formed;
The second tube member includes a connection tube portion that can be inserted inside the outer tube body of the first tube member, and a protrusion that is inserted into the groove that is disposed to face the outer peripheral surface of the connection tube portion. A projection having two surfaces that can be engaged with the locking surface and the flange surface, respectively, and a flow tube tip of the first tube member formed inside the connection tube portion can be accommodated. An accommodating portion and a communicating portion communicating with the accommodating portion,
The hook surfaces and the engaging surfaces of the locking surface and the protrusions are linearly formed so as to be joined to each other in a straight line ,
A medical connection device , wherein an outer peripheral portion of the projection facing the intersection of the two surfaces is chamfered, and a portion of the groove facing the chamfered outer peripheral portion is formed in an arcuate shape .
前記係止面と前記鉤面とが鋭角な角度を構成して形成されており、前記突起が前記係止面と前記鉤面の双方に接しつつ嵌合する形状を有している、請求項1記載の医療用の接続器具。   The locking surface and the flange surface are formed so as to form an acute angle, and the protrusion has a shape that fits in contact with both the locking surface and the flange surface. The medical connection apparatus according to 1. 前記第1の管部材又は前記第2の管部材の少なくとも一方に、前記2つの管部材が連結された際に前記突起を前記係止面へ押圧する方向に付勢する弾性体を備えた、請求項1又は2記載の医療用の接続器具。   At least one of the first tube member or the second tube member is provided with an elastic body that urges the projection in a direction to press the projection against the locking surface when the two tube members are connected. The medical connection instrument according to claim 1 or 2. 前記弾性体は前記第2の管部材の接続筒部の内側に充填されたシール性を有するセプタムであり、該セプタムには前記第1の管部材の流通管先端部を通すスリットが形成されている、請求項3記載の医療用の接続器具。The elastic body is a septum having a sealing property filled inside the connecting tube portion of the second pipe member, and the septum is formed with a slit through which the leading end portion of the flow pipe of the first pipe member is passed. The medical connecting device according to claim 3.
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