JP7026946B2 - Catheter connector - Google Patents

Catheter connector Download PDF

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JP7026946B2
JP7026946B2 JP2018095105A JP2018095105A JP7026946B2 JP 7026946 B2 JP7026946 B2 JP 7026946B2 JP 2018095105 A JP2018095105 A JP 2018095105A JP 2018095105 A JP2018095105 A JP 2018095105A JP 7026946 B2 JP7026946 B2 JP 7026946B2
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connector
catheter
tightening ring
wall surface
ring
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JP2019198510A (en
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聖臣 吾妻
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Hakko Co Ltd
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Hakko Co Ltd
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Description

本発明は、カテーテルを薬液注入器具に連結するための接続器具であって、カテーテルの末端部に着脱自在に接続されるカテーテルコネクタに関する。 The present invention relates to a connector for connecting a catheter to a drug solution injection device, which is detachably connected to the end of the catheter.

例えば、硬膜外カテーテルをシリンジ等の薬液注入器具と連結するためにカテーテルの末端部に着脱自在に接続するカテーテルコネクタとしては、カテーテルを通す通孔を備えたゴム弾性の締め付けリングと、該締め付けリングを内挿した筒状のクランプ本体（コネクタ本体）と、締め付けリングをクランプ本体と挟み込む態様で該クランプ本体に取り付けるクランプキャップ（コネクタキャップ）と、クランプキャップをクランプ本体の軸方向に相対的に可動させるクランプレバーで構成され、前記締め付けリングの通孔にカテーテルを通し、クランプレバーの操作によりクランプ本体とクランプキャップに挟み込んだ締め付けリングを両端から押し潰し、該締め付けリングの通孔を圧縮することでカテーテルを接続し固定する器具が提案されている。（特許文献１） For example, as a catheter connector that is detachably connected to the end of the catheter in order to connect the epidural catheter to a drug solution injection device such as a syringe, a rubber elastic tightening ring having a through hole for passing the catheter and the tightening thereof. A tubular clamp body (connector body) with a ring inserted, a clamp cap (connector cap) that attaches the tightening ring to the clamp body by sandwiching it with the clamp body, and a clamp cap relative to the axial direction of the clamp body. It is composed of a movable clamp lever, a catheter is passed through the through hole of the tightening ring, and the tightening ring sandwiched between the clamp body and the clamp cap is crushed from both ends by operating the clamp lever to compress the through hole of the tightening ring. An instrument for connecting and fixing a catheter has been proposed. (Patent Document 1)

特開２０１４－１５５６２５号公報Japanese Unexamined Patent Publication No. 2014-155625

前記従来のカテーテルコネクタは、クランプレバーの回動操作によりクランプキャップをスライドさせ、ワンタッチ操作でカテーテルをコネクタに連結又は解除することが可能で、締め付けリングによるカテーテルを締め付ける強さも一定となることから締め付け不良が発生しないなど使い勝手の良いコネクタとなっている。 In the conventional catheter connector, the clamp cap can be slid by rotating the clamp lever, and the catheter can be connected to or disconnected from the connector by one-touch operation, and the strength of tightening the catheter by the tightening ring is also constant. It is an easy-to-use connector that does not cause any defects.

しかし、このようにゴム弾性の締め付けリングを両端から押し潰して用いるコネクタは、接続したカテーテルを取り外すときや、接続し直したいときなど、クランプレバーの操作によりクランプキャップを緩め締め付けリングへの圧縮を解除しても、ゴム弾性を備える締め付けリングの性質上、リング外周面がクランプ本体の内壁に密着したまま張り付いた状態となり、締め付けリングの形状が元に戻らないことでカテーテルが容易に抜くことができないといった問題が報告されている。 However, the connector used by crushing the rubber elastic tightening ring from both ends in this way loosens the clamp cap by operating the clamp lever when removing the connected catheter or when you want to reconnect, and compresses to the tightening ring. Even if it is released, due to the nature of the tightening ring with rubber elasticity, the outer peripheral surface of the ring remains in close contact with the inner wall of the clamp body and sticks to it, and the shape of the tightening ring does not return to its original shape, so the catheter can be easily pulled out. Problems such as being unable to do so have been reported.

そこで、本発明は、カテーテルとの接続を従来のワンタッチコネクタと遜色のない容易なものとすると共に、コネクタからのカテーテルの取り外しのさい、容易に、かつ、確実に抜去することができるカテーテルコネクタを提供することを課題とした。 Therefore, the present invention makes the connection with the catheter as easy as the conventional one-touch connector, and provides a catheter connector that can be easily and surely removed when the catheter is removed from the connector. The issue was to provide.

本発明のカテーテルコネクタは、カテーテルを通す通孔を備えるゴム弾性部材よりなる締め付けリングと、該締め付けリングを内腔に収容する筒部を備えるコネクタ本体と、該コネクタ本体と共に前記締め付けリングを挟み込む態様でコネクタ本体に組み付けるコネクタキャップと、前記コネクタ本体に対してコネクタキャップを軸方向に相対的にスライドして、締め付けリングへの押圧及びその解除をするスライド手段により構成し、前記締め付けリングを収容するコネクタ本体の筒部内腔の遠位側壁面には軸方向に並列する複数の凹条溝を備えて形成し、筒部内腔の近位側壁面には凹条溝を備えない構成とした。 The catheter connector of the present invention has a tightening ring made of a rubber elastic member having a hole for passing a catheter, a connector main body including a tubular portion for accommodating the tightening ring in a cavity, and an embodiment in which the tightening ring is sandwiched together with the connector main body. It is composed of a connector cap to be assembled to the connector body and a slide means for pressing and releasing the tightening ring by sliding the connector cap relative to the connector body in the axial direction, and accommodating the tightening ring. The distal side wall surface of the tubular cavity of the connector body is formed with a plurality of concave grooves parallel to each other in the axial direction, and the proximal side wall surface of the tubular cavity is not provided with the concave groove .

尚、前記遠位側壁面とはコネクタ本体の筒部の先端側でカテーテルが挿入される側の内壁面を示し、近位側壁面とはコネクタ本体の筒部の底部側の内壁面を示す。 The distal side wall surface indicates the inner wall surface on the tip end side of the tubular portion of the connector body on the side where the catheter is inserted, and the proximal side wall surface indicates the inner wall surface on the bottom side of the tubular portion of the connector body.

また、前記締め付けリングは、遠位側の外周面が前記複数の凹条溝を設けたコネクタ本体の内腔壁面に、近位側の外周面が凹条溝を設けないコネクタ本体の内腔壁面に接して配置される。 Further, in the tightening ring, the outer peripheral surface on the distal side is provided on the inner wall surface of the connector body having the plurality of concave grooves, and the outer peripheral surface on the proximal side is not provided with the concave groove on the inner wall surface of the connector body. It is placed in contact with.

（作用）
前記手段のカテーテルコネクタによれば、締め付けリングを収容するコネクタ本体の筒部内腔の壁面に軸方向に並列する複数の凹条溝を備えているため、締め付けリングと内腔壁面の凹条溝が隙間となり、締め付けリング外周面とコネクタ本体の内腔壁面との接触面（密着面）が小さくなり接触摩擦抵抗が低減するなどにより、締め付けリングへの圧縮を解除したさい該締め付けリングが圧縮前の元の形状に戻りやすい。また、筒部内腔の近位側壁面には凹条溝を設けず、締め付けリングは遠位側が溝のある壁面、近位側が溝のない壁面と接触することで、気密の維持と隙間による接触抵抗をバランス良く維持することで、圧縮時は気密を確実に維持して液漏れなどを防止し、圧縮解除時は短時間に締め付けリングを元の形状に戻すことができる。 (Action)
According to the catheter connector of the above-mentioned means, since the wall surface of the tubular lumen of the connector body accommodating the tightening ring is provided with a plurality of concave grooves parallel to each other in the axial direction, the tightening ring and the concave groove of the lumen wall surface are provided. When the compression to the tightening ring is released due to a gap, the contact surface (contact surface) between the outer peripheral surface of the tightening ring and the inner wall surface of the connector body becomes smaller and the contact friction resistance is reduced, the tightening ring is before compression. It is easy to return to the original shape. In addition, no concave groove is provided on the proximal side wall surface of the tubular cavity, and the tightening ring contacts the wall surface with a groove on the distal side and the wall surface without a groove on the proximal side to maintain airtightness and contact by a gap. By maintaining a well-balanced resistance, airtightness can be reliably maintained during compression to prevent liquid leakage, and the tightening ring can be returned to its original shape in a short time when decompression.

前記手段のカテーテルコネクタによると、カテーテルとの接続を従来のワンタッチコネクタと遜色のない容易なものとすると共に、コネクタからのカテーテルの取り外しのさい、容易に、かつ、確実にカテーテルを抜去することができるカテーテルコネクタを提供することができる。 According to the catheter connector of the above means, the connection with the catheter can be made as easy as the conventional one-touch connector, and the catheter can be easily and surely removed when the catheter is removed from the connector. A capable catheter connector can be provided.

本発明の実施の形態のカテーテルコネクタの全体構成図。（クランプレバーを開いた状態）The whole block diagram of the catheter connector of embodiment of this invention. (With the clamp lever open) 前記形態のクランプレバーを開いた状態の側面図、及び、内部に収容されている締め付けリングの外観図。A side view of the clamp lever of the above-described state in an open state, and an external view of a tightening ring housed inside. 前記形態のクランプレバーを閉じた状態の側面断面図。The side sectional view in the state which the clamp lever of the said form is closed. 前記形態のコネクタ本体の斜視図。The perspective view of the connector body of the said form. 前記形態のコネクタ本体の正面図及び側面図。The front view and the side view of the connector body of the said form. 前記コネクタ本体のＡ－Ａ断面図、及び、締め付けリングを収容した状態の断面図。A cross-sectional view of the connector body and a cross-sectional view of the state in which the tightening ring is housed. 前記コネクタ本体のＢ－Ｂ断面図。BB sectional view of the connector body. 前記形態のコネクタキャップの斜視図及び正面図。The perspective view and the front view of the connector cap of the said form. 前記形態のクランプレバーの斜視図及び側面図。The perspective view and the side view of the clamp lever of the said form. 従来のコネクタ本体の一例を示す斜視図。The perspective view which shows an example of the conventional connector body.

以下、本発明のカテーテルコネクタの実施の形態の一例につき図面を参考に詳細に説明する。
図１は、本実施の形態のカテーテルコネクタのクランプレバーを開いた状態の全体構成図を示し、図２は、Ａが前記状態の側面図、Ｂがコネクタ内に収容されている締め付けリングを示している。また、図３は、前記形態のクランプレバーを閉じ、カテーテルが固定された状態の側面断面図を示している。尚、図３の断面図において理解を容易とするため、参考として、カテーテルを破線で示している。 Hereinafter, an example of the embodiment of the catheter connector of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an overall configuration diagram in a state where the clamp lever of the catheter connector of the present embodiment is opened, FIG. 2 shows a side view of the above-mentioned state, and FIG. 2 shows a tightening ring housed in the connector. ing. Further, FIG. 3 shows a side sectional view of a state in which the clamp lever of the above-described embodiment is closed and the catheter is fixed. The catheter is shown by a broken line for reference in the cross-sectional view of FIG. 3 for easy understanding.

本形態のカテーテルコネクタは、硬膜外麻酔用カテーテル等のカテーテルの末端部を接続して、該カテーテルに麻酔薬等を注入する器具（シリンジや持続注入器等）を結合するためのコネクタとして用いられるもので、カテーテルが貫通する通孔４１を備えるゴム弾性部材よりなる締め付けリング４と、該締め付けリング４を内腔１２０に収容する筒部１２、及び、薬液注入器具との接続部（テーパー部）１１を備えるコネクタ本体１と、コネクタ本体１と共に締め付けリング４を両端部から挟み込む態様でコネクタ本体１に組み付けられるコネクタキャップ２と、前記コネクタ本体１に対してコネクタキャップ２を軸方向に相対的にスライドし、締め付けリング４を押圧、及び、解除するためのスライド操作部となるクランプレバー３により基本構成される。 The catheter connector of this embodiment is used as a connector for connecting the end of a catheter such as an epidural anesthesia catheter and connecting an instrument (syringe, continuous injector, etc.) for injecting an anesthetic agent or the like into the catheter. A tightening ring 4 made of a rubber elastic member having a through hole 41 through which a catheter penetrates, a tubular portion 12 for accommodating the tightening ring 4 in the lumen 120, and a connection portion (tapered portion) with a chemical injection device. ) 11, the connector main body 1 to be assembled to the connector main body 1 by sandwiching the tightening ring 4 together with the connector main body 1 from both ends, and the connector cap 2 relative to the connector main body 1 in the axial direction. It is basically composed of a clamp lever 3 which is a slide operation unit for pressing and releasing the tightening ring 4 by sliding to.

次に、各部に付き詳細に説明する。図４から図７は本形態のコネクタ本体を示し、図４は斜視図、図５はＡが正面図、Ｂが側面図、図６は、Ａ－Ａ断面図で、Ａが締め付けリングを収容していないとき、Ｂが内腔に締め付けリングを収容したときの断面図、図７がＢ－Ｂ断面図を示している。 Next, each part will be described in detail. 4 to 7 show the connector main body of this embodiment, FIG. 4 is a perspective view, FIG. 5 is a front view, B is a side view, FIG. 6 is a sectional view taken along the line AA, and A accommodates a tightening ring. When not, B shows a cross-sectional view when B accommodates the tightening ring in the lumen, and FIG. 7 shows a cross-sectional view taken along the line BB.

本形態のコネクタ本体１は、近位側は、シリンジ等の薬液注入器具のオステーパーを接続するためのメスルアーテーパー部１１として形成し、遠位側は、締め付けリング４を収容するため該締め付けリング４の外径に適合する内腔１２０を有し、先端開口部を挿入口１３とした円筒状のリング収容筒部１２として形成し、該リング収容筒部１２の先端側側面の対称となる位置には、後記するクランプレバー３を取り付けて、回動するための回動軸１４を幅方向に突出させて設け構成した。 The connector body 1 of the present embodiment is formed on the proximal side as a female luer taper portion 11 for connecting a male taper of a drug solution injection device such as a syringe, and on the distal side, the tightening is performed to accommodate the tightening ring 4. It has a lumen 120 that matches the outer diameter of the ring 4, and is formed as a cylindrical ring accommodating cylinder 12 having a tip opening 13 as an insertion port, and is symmetrical to the front end side surface of the ring accommodating cylinder 12. A clamp lever 3 described later was attached to the position, and a rotation shaft 14 for rotation was provided so as to project in the width direction.

そして、前記ルアーテーパー部１１とリング収容筒部１２との中間部はコネクタ本体基部１５とし、該コネクタ本体基部１５には、リング収容筒部１２と連通する内腔１２０に締め付けリング４の底部を留め置くための段差を備えた締め付けリング留め部１６、及び、締め付けリング４の貫通孔４１を通して突出するカテーテル末端を留め置くためのテーパー状に形成されるカテーテル末端収容部位１７、及び、その端部となるカテーテル留め部１７１が設けられている。 The intermediate portion between the luer taper portion 11 and the ring accommodating cylinder portion 12 is a connector main body base portion 15, and the connector main body base portion 15 has a bottom portion of a tightening ring 4 in a lumen 120 communicating with the ring accommodating cylinder portion 12. A tightening ring fastening portion 16 having a step for fastening, a catheter end accommodating portion 17 formed in a tapered shape for fastening a catheter end protruding through a through hole 41 of the tightening ring 4, and an end thereof. A catheter fastening portion 171 is provided.

また、コネクタ本体基部１５の近位側には、カテーテルを固定するためクランプレバー３を完全に閉じ状態にするさいに、クランプレバー３を固定する手段となる係止フック１８を設けて、これらを一体的に形成してコネクタ本体１として構成した。 Further, on the proximal side of the base 15 of the connector body, a locking hook 18 as a means for fixing the clamp lever 3 is provided when the clamp lever 3 is completely closed to fix the catheter. It was integrally formed and configured as the connector body 1.

更に、本カテーテルコネクタ本体１は、カテーテル末端が所定のカテーテル末端収容部１７のカテーテル留め部１７１の位置まで挿入されていることが外部から目視で確認できるように透明あるいは半透明な樹脂により形成されており、また、カテーテル末端収容部１７が目視しやすいように該収容部の周囲を開口抜け部１７０として形成している。 Further, the catheter connector body 1 is formed of a transparent or translucent resin so that it can be visually confirmed from the outside that the catheter end is inserted to the position of the catheter fastening portion 171 of the predetermined catheter end accommodating portion 17. In addition, the catheter end accommodating portion 17 is formed as an opening through portion 170 around the accommodating portion so that it can be easily seen.

そして、前記リング収納筒部１２の内腔１２０の壁面に、軸方向に並列する複数の凹条溝１９を壁面全周囲にわたりほぼ等間隔で設けられるが、該凹条溝１９は、内腔１２０壁面の遠位側先端から、締め付けリング４を収納したさい、該締め付けリング４の約半分程度の長さの位置までに設け、凹条溝設定内壁面１２ａとし、その位置から近位側の壁面には凹条溝を設けず、凹条溝非設定内壁面１２ｂとして形成される。尚、締め付けリング４がコネクタキャップ２により押圧され圧縮したときであっても、締め付けリング４の遠位側の一定の長さ部分が凹条溝設定内壁面１２ａに位置するように設定されている。（図３参照） Then, on the wall surface of the lumen 120 of the ring storage cylinder portion 12, a plurality of concave grooves 19 parallel to each other in the axial direction are provided at substantially equal intervals over the entire wall surface, and the concave grooves 19 are provided in the lumen 120. When the tightening ring 4 is stored, it is provided from the distal end of the wall surface to a position about half the length of the tightening ring 4, and is set as the inner wall surface 12a for setting the concave groove, and the wall surface on the proximal side from that position. Is not provided with a concave groove, and is formed as an inner wall surface 12b in which the concave groove is not set. Even when the tightening ring 4 is pressed and compressed by the connector cap 2, a certain length portion on the distal side of the tightening ring 4 is set to be located on the inner wall surface 12a of the concave groove setting. .. (See Fig. 3)

図１０は、参考として従来のコネクタ本体の一例を示している。
従来のコネクタ本体５１のリング収納筒部５１２の内腔５１２０には、凹条溝が設けられていないため、ゴム弾性部材よりなる締め付けリング４の性質上、圧縮され内腔５１２０壁面に密着された後、該圧縮が解除されても、ゴム弾性のリングが内腔５１２０壁面に張り付いてしまうことで、圧縮前の元形状に戻り難くカテーテルが抜けないことがある。 FIG. 10 shows an example of a conventional connector main body for reference.
Since the lumen 5120 of the ring storage cylinder portion 512 of the conventional connector main body 51 is not provided with the concave groove, it is compressed and adhered to the wall surface of the lumen 5120 due to the nature of the tightening ring 4 made of a rubber elastic member. Later, even if the compression is released, the rubber elastic ring sticks to the wall surface of the lumen 5120, so that it may be difficult to return to the original shape before compression and the catheter may not come off.

一方、本形態のコネクタ本体１のリング収納筒部１２の内腔１２０には、凹条溝１９が設けられ、締め付けリング４が圧縮された状態でも該締め付けリング４の遠位側の一定部位が凹条溝設定内壁面１２ａに設定されることで、壁面との接触面積が減ると共に壁面との密着を解除するさいの空気の通路となるなど締め付けリング４との接触摩擦抵抗が低減することで、締め付けリング４が圧縮前の元形状に戻りやすいものとなっている。また、締め付けリング４近位側は凹条溝非設定内壁面１２ｂに位置されることで溝からの液漏れ等を防止している。 On the other hand, a concave groove 19 is provided in the cavity 120 of the ring storage cylinder portion 12 of the connector main body 1 of the present embodiment, and even when the tightening ring 4 is compressed, a certain portion on the distal side of the tightening ring 4 is formed. By setting the concave groove setting inner wall surface 12a, the contact area with the wall surface is reduced, and the contact frictional resistance with the tightening ring 4 is reduced, such as by providing an air passage when the contact with the wall surface is released. , The tightening ring 4 easily returns to the original shape before compression. Further, the proximal side of the tightening ring 4 is located on the inner wall surface 12b where the concave groove is not set to prevent liquid leakage from the groove.

締め付けリング４は、前記コネクタ本体１のリング収容筒部１２の内腔１２０に収容されて用いられるゴム弾性樹脂からなる筒状のリングで、カテーテルを貫通可能な貫通孔４１を有し、外径が該リング収容筒部１２の内径に適合したものとして形成される。そして、カテーテル挿通後、コネクタ本体１とコネクタキャップ２とにより両端から押し潰されることにより貫通孔４１の内径が縮小し、該カテーテルを締め付け固定することで固定状態となる。 The tightening ring 4 is a tubular ring made of rubber elastic resin that is accommodated and used in the lumen 120 of the ring accommodating tubular portion 12 of the connector main body 1, has a through hole 41 capable of penetrating a catheter, and has an outer diameter. Is formed as conforming to the inner diameter of the ring accommodating cylinder portion 12. Then, after the catheter is inserted, the inner diameter of the through hole 41 is reduced by being crushed from both ends by the connector main body 1 and the connector cap 2, and the catheter is tightened and fixed to be in a fixed state.

図８は、本形態のコネクタキャップを示し、Ａが斜視図、Ｂが側面図を示している。
コネクタキャップ２は、前記コネクタ本体１と共に締め付けリング４を両側から挟み込む態様で該コネクタ本体１と組み合わされるもので、該コネクタ本体１のリング収容筒部１２の内腔１２０に挿入されて締め付けリング４への圧縮部となる内筒２１と、該内筒２１と同軸となる外延に前記コネクタ本体１のリング収容筒部１２を収容する外筒２２を設け、該内筒２１及び外筒２２は、先端部２３で折り返すようにつなげられ一体化され形成されている。そして、前記内筒２１には、カテーテルが挿入可能な挿通孔２１０が設けられ、外筒２２には、該外筒２２側面の対称となる位置に、前記コネクタ本体１と組み合わせたさいにコネクタ本体１の回動軸１４を突出させ、該コネクタ本体１とコネクタキャップ２の可動を軸方向に規制するスリット２４が設けられる。 FIG. 8 shows the connector cap of this embodiment, where A is a perspective view and B is a side view.
The connector cap 2 is combined with the connector main body 1 in such a manner that the tightening ring 4 is sandwiched from both sides together with the connector main body 1, and is inserted into the lumen 120 of the ring accommodating cylinder portion 12 of the connector main body 1 and the tightening ring 4 is inserted. An inner cylinder 21 that serves as a compression portion for the connector and an outer cylinder 22 that accommodates the ring accommodating cylinder portion 12 of the connector main body 1 are provided on the outer cylinder coaxial with the inner cylinder 21, and the inner cylinder 21 and the outer cylinder 22 are provided with the inner cylinder 21 and the outer cylinder 22. It is connected and integrally formed so as to be folded back at the tip portion 23. The inner cylinder 21 is provided with an insertion hole 210 into which a catheter can be inserted, and the outer cylinder 22 has a connector main body at a symmetrical position on the side surface of the outer cylinder 22 when combined with the connector main body 1. A slit 24 is provided in which the rotation shaft 14 of 1 is projected and the movement of the connector main body 1 and the connector cap 2 is restricted in the axial direction.

また、前記外筒２２の近位側には、スリット２４を跨いで幅方向両側に張り出して延設する翼２５を設け、該翼２５には、後記するクランプレバー３の回動により該クランプレバーの押圧部３２との接触部となり、押圧されて、コネクタリング２全体を軸方向に可動するための接触部２６として、翼２５上面の前記スリット２４を挟んでクランプレバー３側の面を第一の接触面２６ａ、奥側の面を第二の接触面２６ｂとして形成し、第一及び第二の接触面２６ａ、２６ｂの間はスリット２４と連通する空間２７として形成して、コネクタキャップ２可動による締め付けリング４の圧縮手段、及び、クランプレバー３の回動を中途で仮止めさせる仮止め手段としている。また、後記するクランプレバー３を取り付ける側と対向する面には把持や操作を容易とするためのプレート２８を設け、これらを一体に形成してコネクタキャップ２を構成した。 Further, on the proximal side of the outer cylinder 22, a wing 25 extending across the slit 24 on both sides in the width direction is provided, and the wing 25 is provided with the clamp lever by the rotation of the clamp lever 3 described later. As a contact portion 26 for contacting the pressing portion 32 and being pressed to move the entire connector ring 2 in the axial direction, the surface on the clamp lever 3 side is first sandwiched between the slit 24 on the upper surface of the wing 25. The contact surface 26a and the inner surface of the above are formed as the second contact surface 26b, and the space 27 between the first and second contact surfaces 26a and 26b is formed as a space 27 communicating with the slit 24, and the connector cap 2 is movable. It is used as a compression means for the tightening ring 4 and a temporary fixing means for temporarily fixing the rotation of the clamp lever 3 in the middle. Further, a plate 28 for facilitating gripping and operation is provided on the surface facing the side where the clamp lever 3 is attached, which will be described later, and these are integrally formed to form the connector cap 2.

図９は、本形態のクランプレバーを示し、Ａが斜視図、Ｂが側面図を示している。
クランプレバー３は、前記コネクタ本体１の回動軸１４に係合させ、前記コネクタキャップ２を挟んだ状態で回動運動可能なように接続する軸受フック３１と、前記コネクタキャップ２の接触部２６に適合する当接部であって、カテーテルを接続するさい、コネクタキャップ２を軸方向に押し込むように移動させる、角部を適度な湾曲形状に形成した押圧部３２と、クランプレバー３をコネクタ本体１から離した状態となる開いた状態から、レバーがコネクタ本体１に接した状態となる閉じた状態まで回動させるための操作部となる把持部３３、及び、完全に閉じた状態としたさいに、コネクタ本体１の係止フック１８に係合する接続固定手段となる掛止め部３４を設けて、これらを一体に形成してクランプレバー３を構成した。 9 shows the clamp lever of this embodiment, where A is a perspective view and B is a side view.
The clamp lever 3 is engaged with the rotation shaft 14 of the connector body 1 and is connected so that it can rotate while sandwiching the connector cap 2. The contact portion 26 of the connector cap 2 and the bearing hook 31 are connected. A contact portion that is compatible with the above, and the pressing portion 32 with the corners formed into an appropriate curved shape, which moves the connector cap 2 so as to be pushed in the axial direction when connecting the connector, and the clamp lever 3 are connected to the connector body. The grip portion 33, which is an operation unit for rotating the lever from the open state where it is separated from 1 to the closed state where the lever is in contact with the connector body 1, and the completely closed state. A hooking portion 34 serving as a connection fixing means for engaging with the locking hook 18 of the connector main body 1 is provided, and these are integrally formed to form a clamp lever 3.

前記コネクタ本体１、コネクタキャップ２、クランプレバー３、及び、締め付けリング４は次のように接続され一体化される。
コネクタ本体１のリング収容筒部１２に締め付けリング４を挿入した後、該締め付けリング４をコネクタキャップ２の内筒２１と挟むように、また、コネクタ本体１から突起する回動軸１４をコネクタキャップ２のスリット２４から突出するように、コネクタキャップ２の内筒２１と外筒２２の間にコネクタ本体１のリング収容筒部１２を挿入して取り付ける。次に、前記コネクタ本体１の回動軸１４に、コネクタキャップ２の外筒２２を挟むようにクランプレバー３の軸受フック３１を嵌めこみ、本形態のカテーテルコネクタとした。（図１～図３参照） The connector body 1, the connector cap 2, the clamp lever 3, and the tightening ring 4 are connected and integrated as follows.
After inserting the tightening ring 4 into the ring accommodating cylinder portion 12 of the connector main body 1, the tightening ring 4 is sandwiched between the inner cylinder 21 of the connector cap 2 and the rotating shaft 14 protruding from the connector main body 1 is connected to the connector cap. The ring accommodating cylinder portion 12 of the connector main body 1 is inserted and attached between the inner cylinder 21 and the outer cylinder 22 of the connector cap 2 so as to protrude from the slit 24 of 2. Next, the bearing hook 31 of the clamp lever 3 was fitted into the rotating shaft 14 of the connector body 1 so as to sandwich the outer cylinder 22 of the connector cap 2, and the catheter connector of the present embodiment was obtained. (See Figures 1 to 3)

ここで、クランプレバー３の軸受フック３１を把持部３３の両側面から突起させ、軸受フック３１間に切り欠け部を備える形状を採っているため、クランプレバー３の回動のさい、把持部３３上端部がコネクタキャップ２の外筒２２に接触して止まり、該接触位置がクランプレバー３を開いた状態の上限位置となる。 Here, since the bearing hook 31 of the clamp lever 3 is projected from both side surfaces of the grip portion 33 and has a shape in which a notch portion is provided between the bearing hooks 31, the grip portion 33 is formed when the clamp lever 3 is rotated. The upper end portion comes into contact with the outer cylinder 22 of the connector cap 2 and stops, and the contact position becomes the upper limit position in the state where the clamp lever 3 is opened.

本形態のカテーテルコネクタにカテーテルを接続する手段を説明する。
先ず、クランプレバー３を開いた状態でカテーテル末端部をコネクタキャップ２の挿通孔２１０から、締め付けリング４の貫通孔４１を通し、コネクタ本体１のカテーテル末端収容部１７まで挿入する。
そして、前記のようにコネクタ本体１の回動軸１４に接続されたクランプレバー３を、回動軸１４を軸として回動して、クランプレバー３を開いた状態から閉じた状態にすることで、クランプレバー３の押圧部３２に押圧された接触部２６が軸方向に可動して、コネクタキャップ２の内筒２１を押し下げ、コネクタ本体１の締め付けリング留め部１６との間で締め付けリング４が押し潰され、結果、カテーテルが締め付けリング４に締め付けられて固定される。尚、カテーテルの接続を解除するときは、クランプレバー３を閉じた状態から開いた状態にすることで、コネクタキャップ２全体が遠位側にスライドし、結果、締め付けリング４への押圧が解除され貫通孔４１が広がることで接続が解除される。 A means for connecting a catheter to the catheter connector of this embodiment will be described.
First, with the clamp lever 3 open, the catheter end portion is inserted from the insertion hole 210 of the connector cap 2 through the through hole 41 of the tightening ring 4 to the catheter end accommodating portion 17 of the connector body 1.
Then, the clamp lever 3 connected to the rotation shaft 14 of the connector main body 1 as described above is rotated around the rotation shaft 14 to change the clamp lever 3 from the open state to the closed state. , The contact portion 26 pressed against the pressing portion 32 of the clamp lever 3 moves in the axial direction, pushes down the inner cylinder 21 of the connector cap 2, and the tightening ring 4 is placed between the tightening ring fastening portion 16 of the connector main body 1. It is crushed and, as a result, the catheter is clamped and secured to the clamp ring 4. When disconnecting the catheter, by changing the clamp lever 3 from the closed state to the open state, the entire connector cap 2 slides to the distal side, and as a result, the pressing on the tightening ring 4 is released. The connection is released by expanding the through hole 41.

尚、前記クランプレバー３を閉じ、締め付けリング４が押し潰してカテーテルが固定されたさい、押し潰された締め付けリング４は、その遠位側の部位がコネクタ本体１の内壁面に設けられた凹条溝１９に係る位置になるように設定されている。（図３参照） When the clamp lever 3 is closed and the tightening ring 4 is crushed to fix the catheter, the crushed tightening ring 4 has a concave portion on the inner wall surface of the connector main body 1 on the distal side thereof. It is set to be the position related to the groove 19. (See Fig. 3)

このように、カテーテルの締め付け固定のさい、該締め付けリング４の遠位側がリング収容筒部１２の凹条溝設定内壁面１２ａに設定されていることで、接続解除のさい、内腔１２０壁面に締め付けリング４が張り付いてしまい、形状が戻らずにカテーテルとの接続が解除されないといったことを防止している。 As described above, when the catheter is tightened and fixed, the distal side of the tightening ring 4 is set on the inner wall surface 12a of the concave groove setting of the ring accommodating cylinder portion 12, so that when the connection is disconnected, the wall surface of the lumen 120 is covered. It prevents the tightening ring 4 from sticking to the catheter and preventing the catheter from being disconnected without returning to its original shape.

１． コネクタ本体
１１． （メス）ルアーテーパー部
１２． リング収納筒部
１２０．（リング収容）内腔
１２ａ．凹条溝設定内壁面
１２ｂ．凹条溝非設定内壁面
１３． リング挿入口
１４． 回動軸
１５． コネクタ本体基部
１６． 締め付けリング留め部
１７． カテーテル末端収容部
１７１．カテーテル留め部
１８． 係止フック
１９． 凹条溝
２． コネクタキャップ
２１． 内筒
２１０．挿通孔
２２． 外筒
２３． 先端部
２４． スリット
２５． 翼部
２６ａ．第一の接触部
２６ｂ．第二の接触部
２７． 空間
２８． 把持プレート
３． クランプレバー
３１． 軸受フック
３２． 押圧部
３３． 把持部
３４． 掛止め部
４． 締め付けリング
４１． 貫通孔 1. 1. Connector body 11. (Female) Luer taper part 12. Ring storage cylinder 120. (Ring accommodation) Lumen 12a. Indented groove setting inner wall surface 12b. Inner wall surface without concave groove 13. Ring insertion slot 14. Rotating shaft 15. Connector body base 16. Tightening ring fastening part 17. Catheter end containment 171. Catheter fastener 18. Locking hook 19. Concave groove 2. Connector cap 21. Inner cylinder 210. Insertion hole 22. Outer cylinder 23. Tip 24. Slit 25. Wings 26a. First contact part 26b. Second contact 27. Space 28. Grip plate 3. Clamp lever 31. Bearing hook 32. Pressing part 33. Grip 34. Hooking part 4. Tightening ring 41. Through hole

Claims (2)

カテーテルを通す通孔を備えるゴム弾性部材よりなる締め付けリングと、
該締め付けリングを内腔に収容する筒部を備えるコネクタ本体と、
該コネクタ本体と共に前記締め付けリングを挟み込む態様でコネクタ本体に組み付けるコネクタキャップと、
前記コネクタ本体に対してコネクタキャップを軸方向に相対的にスライドし、締め付けリングへの押圧、及び、その解除をするスライド手段により構成し、
前記コネクタ本体の筒部内腔の遠位側壁面には軸方向に並列する複数の凹条溝を備え、筒部内腔の近位側壁面には凹条溝を備えないことを特徴とするカテーテルコネクタ。 A tightening ring made of a rubber elastic member with a through hole for passing a catheter,
A connector body having a tubular portion for accommodating the tightening ring in the lumen,
A connector cap that is attached to the connector body by sandwiching the tightening ring together with the connector body,
The connector cap is slid relative to the connector body in the axial direction, and is configured by a sliding means for pressing and releasing the tightening ring.
A catheter connector characterized in that the distal side wall surface of the tubular cavity of the connector body is provided with a plurality of concave grooves parallel to each other in the axial direction, and the proximal side wall surface of the tubular cavity is not provided with the concave groove. .. 前記締め付けリングは、遠位側の外周面が前記複数の凹条溝を設けたコネクタ本体の内腔壁面に、近位側の外周面が凹条溝を設けないコネクタ本体の内腔壁面に接して配置される請求項１のカテーテルコネクタ。 The outer peripheral surface on the distal side is in contact with the inner wall surface of the connector body having the plurality of concave grooves, and the outer peripheral surface on the proximal side is in contact with the inner wall surface of the connector body having no concave groove. The catheter connector according to claim 1 to be arranged.
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