JPH0639724Y2 - Liquid distribution pipe connection member - Google Patents
Liquid distribution pipe connection memberInfo
- Publication number
- JPH0639724Y2 JPH0639724Y2 JP1989024456U JP2445689U JPH0639724Y2 JP H0639724 Y2 JPH0639724 Y2 JP H0639724Y2 JP 1989024456 U JP1989024456 U JP 1989024456U JP 2445689 U JP2445689 U JP 2445689U JP H0639724 Y2 JPH0639724 Y2 JP H0639724Y2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- joint
- liquid flow
- lid
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ この発明は、液体流通管接続部材に関し、さらに詳しく
言うと、たとえば血液透析装置の血液回路と患者の血管
とを接続する際に使用する透析用留置針等の医療器具に
特に好適に利用することができるとともに、たとえば、
この血液透析の後に続いて点滴処置を行うに際して、そ
の留置針をそのまま使用して点滴経路と患者の血管とを
容易にかつ安全に接続することのできる液体流通管接続
部材に関する。TECHNICAL FIELD The present invention relates to a liquid flow pipe connecting member, and more specifically, it is used for connecting a blood circuit of a hemodialysis device and a blood vessel of a patient, for example. It can be particularly preferably used for medical devices such as indwelling needles for use in
The present invention relates to a liquid flow tube connecting member capable of easily and safely connecting a drip route and a blood vessel of a patient by using the indwelling needle as it is when performing drip treatment subsequent to this hemodialysis.
［従来の技術およびその問題点］ たとえば、血液透析装置の血液回路と患者の血管とを接
続するには、患者の血管内に挿入したままで使用する留
置針と血液回路の血液チューブ先端に設けた継手とを接
続することにより行なわれている。[Prior Art and Its Problems] For example, in order to connect a blood circuit of a hemodialysis machine and a blood vessel of a patient, an indwelling needle used while being inserted into the blood vessel of the patient and a blood tube tip of the blood circuit are provided. It is carried out by connecting with the joint.
このような血管内と血液回路の継手とを接続する接続部
材においては、血管から前記継手に至るまでの血液流通
路の脱気をいかに迅速かつ完全に行うことができるかが
重要な問題となる。In such a connecting member that connects the inside of the blood vessel and the joint of the blood circuit, it is an important issue how quickly and completely deaeration of the blood flow passage from the blood vessel to the joint can be performed. .
また、このような血液透析処置の後に、たとえば点滴処
置を施す場合において、従来のように前記血液透析の経
路とは別の経路を確保して点滴処置を行う必要もなく、
血液透析処置に用いた留置針をそのまま用いて点滴用チ
ューブと患者の血管とを安全にかつ迅速に接続すること
のできる接続部材が望まれている。Further, after performing such a hemodialysis treatment, for example, in the case of performing a drip treatment, it is not necessary to secure a route different from the route of the hemodialysis and perform the drip treatment unlike the conventional case.
There is a demand for a connecting member that can safely and quickly connect an infusion tube and a patient's blood vessel using the indwelling needle used for hemodialysis treatment as it is.
ところで、従来の接続部材としては、第７図に示すよう
に樹脂製の外筒針ａと、この外筒針ａの全長よりも長い
全長を有する金属製の内針（図示せず。）とからなるも
のが知られている。この留置針は外筒針ａの先端を患者
の血管内に臨ませた状態で留置するものであり、次のよ
うな手順で使用する。By the way, as a conventional connecting member, as shown in FIG. 7, an outer cylindrical needle a made of resin and an inner needle made of metal (not shown) having a total length longer than the total length of the outer cylindrical needle a. Things are known. This indwelling needle is placed with the tip of the outer tubular needle a facing the blood vessel of the patient, and is used in the following procedure.
すなわち、外筒針ａの先端より内針の先端が突出する
ように、外筒針ａの貫通孔ｂ内へ図中の矢印の方向から
内針を挿入する。外筒針ａの先端より突出した内針の
先端を患者の皮膚および血管に穿刺挿入し、外筒針ａの
先端を血管内に案内する。外筒針ａの先端が血管内に
達した後、内針を図中の矢印の方向とは反対の方向に引
き抜く。その後、外筒針ａに血液が満ちるのを持って
この外筒針ａの接続端ｃに血液回路の継手を接続する。That is, the inner needle is inserted into the through hole b of the outer tubular needle a from the direction of the arrow in the figure so that the tip of the inner needle projects from the tip of the outer tubular needle a. The tip of the inner needle protruding from the tip of the outer needle a is inserted into the skin and the blood vessel of the patient, and the tip of the outer needle a is guided into the blood vessel. After the tip of the outer cylindrical needle a reaches the inside of the blood vessel, the inner needle is pulled out in the direction opposite to the direction of the arrow in the figure. After that, the outer tube needle a is filled with blood, and the joint of the blood circuit is connected to the connection end c of the outer tube needle a.
また、このような接続部材のほかに、次に示すような接
続部材も知られている。In addition to such connecting members, the following connecting members are also known.
第８図に示すように、この接続部材は外筒針ａの接続端
ｃに弾性体からなる貫通管ｄを設け、且つ、この貫通管
ｄの開放端に着脱自在な栓ｅを取り付けてなるものであ
り、その使用にあたっては以下の操作を行なう。ま
ず、内針を栓ｅの表面から穿刺挿入して、その先端が外
筒針ａの先端より突出するように外筒針ａ内に挿入す
る。外筒針ａの先端より突出した内針の先端を患者の
皮膚および血管に穿刺挿入して外筒針ａの先端を血管内
に案内する。外筒針ａの先端が血管内に達した後、内
針を栓ｅから引き抜く。次いで、貫通管ｄの中間部
を、たとえば嵌子で挟む。その後、栓ｅを取り外して
貫通管ｄの開放端を露出させてから、クランプを徐々に
緩めて貫通管ｄ内を血液で満たす。貫通管ｄ内が血液
で満たされたら、開放端に液体流通管を接続する。As shown in FIG. 8, this connecting member is provided with a through pipe d made of an elastic body at the connecting end c of the outer cylindrical needle a, and a removable plug e attached to the open end of the through pipe d. The following operations should be performed when using it. First, the inner needle is punctured and inserted from the surface of the stopper e, and is inserted into the outer cylinder needle a so that the tip of the inner needle projects from the tip of the outer cylinder needle a. The tip of the inner needle protruding from the tip of the outer tubular needle a is inserted into the skin and the blood vessel of the patient to guide the tip of the outer tubular needle a into the blood vessel. After the tip of the outer cylindrical needle a reaches the inside of the blood vessel, the inner needle is pulled out from the stopper e. Then, the intermediate portion of the through pipe d is sandwiched by, for example, a fitting. After that, the plug e is removed to expose the open end of the through tube d, and then the clamp is gradually loosened to fill the through tube d with blood. When the inside of the through pipe d is filled with blood, the liquid circulation pipe is connected to the open end.
しかしながら、従来の接続部材のうち、たとえば第７図
に示すような接続部材においては、内針を抜去して外筒
針ａの接続端ｃに血液回路の継手を接続する際に、体内
からの血液が外筒針ａの接続端ｃから溢れ出るのを防止
するために、血管と血管内に達した内針の先端とを圧迫
しながら、この内針を抜去しなければならない。However, among the conventional connecting members, for example, in the connecting member as shown in FIG. 7, when the inner needle is removed and the joint of the blood circuit is connected to the connecting end c of the outer cylindrical needle a, In order to prevent the blood from overflowing from the connecting end c of the outer needle a, the inner needle must be removed while pressing the blood vessel and the tip of the inner needle that has reached the inside of the blood vessel.
さらに、血液回路の継手を接続する際に気泡が血管内に
混入するのを防止するために、前記圧迫を徐々にゆるめ
て、血液を外筒針ａの接続端ｃにまで満たし、その後、
迅速に、前記接続端ｃに血液回路の継手を接続しなけれ
ばならない。Further, in order to prevent air bubbles from entering the blood vessel when connecting the joint of the blood circuit, the pressure is gradually loosened to fill the connecting end c of the outer cylindrical needle a with blood, and then,
The joint of the blood circuit must be quickly connected to the connecting end c.
したがって、第７図に示す接続部材においては、その操
作に熟練を要するという問題があった。Therefore, the connection member shown in FIG. 7 has a problem in that its operation requires skill.
また、第８図に示す接続部材においては、外筒針ａの先
端を血管内に案内し、ついで内針を栓ｅから引く抜く際
に、前記内針と共に栓ｅが留置針側から離脱する恐れを
生じ、その結果、前記離脱を避けるために前記内針の引
き抜きに格別の留意を要求され、さらには留置針に液体
流通管を接続する際に、前記栓ｅを取り外さなければな
らないという煩雑な過程をも有していた。Further, in the connecting member shown in FIG. 8, when the tip of the outer tubular needle a is guided into the blood vessel and then the inner needle is pulled out from the stopper e, the stopper e may be separated from the indwelling needle side together with the inner needle. As a result, special care is required for withdrawing the inner needle in order to avoid the disengagement, and further, when the liquid flow pipe is connected to the indwelling needle, the plug e has to be removed, which is complicated. It also had a process.
また、これらの従来の接続部材は、血液透析処置に用い
た留置針をそのまま点滴処置に用いることを想定して設
計されてはおらず、そのことから第７図に示す接続部材
にあっては、血液回路側の継手を接続部材から抜去した
後に、接続部材から逆流する血液の流量を調整しつつ、
接続部材に点滴用チューブの継手を接続するのは実質上
不可能であった。Further, these conventional connecting members are not designed on the assumption that the indwelling needle used for the hemodialysis treatment is directly used for the drip treatment. Therefore, in the connecting member shown in FIG. After removing the joint on the blood circuit side from the connection member, while adjusting the flow rate of blood flowing back from the connection member,
It was virtually impossible to connect the fitting of the drip tube to the connecting member.
さらに、血液回路側の継手を抜去した後の接合部材の接
合部は、その接合部が少なからず変形を伴うことから、
たとえ点滴用チューブの継手を接続し得たとしても、そ
のシール性を充分に実現することのできるものではなか
った。Further, the joint portion of the joint member after the joint on the blood circuit side is removed, since the joint portion is not a little deformed,
Even if the joint of the drip tube could be connected, the sealing property could not be sufficiently realized.
このようなシール性の欠点は第８図に示す接続部材につ
いても同様であった。Such a defect of the sealing property was the same for the connecting member shown in FIG.
［考案の目的］ この考案の目的は、前記問題を解消し、たとえば血液透
析装置の血液回路側の液体流通管を接続する際に、気泡
抜きの操作や特別のテクニックを要することなく、容易
にかつ迅速に前記液体流通管を接続することができ、さ
らに、この血液透析の後に続いてたとえば点滴を行うに
際して、その留置針をそのまま使用して点滴経路と患者
の血管とを容易にかつ液漏れなく接続することができる
液体流通管接続部材を提供することにある。[Object of the Invention] The object of the present invention is to solve the above-mentioned problems, and for example, when connecting a liquid circulation pipe on the blood circuit side of a hemodialysis machine, without the need for a bubble removing operation or a special technique, it is possible to easily Further, the liquid flow pipe can be connected quickly, and further, for example, when performing drip infusion after this hemodialysis, the indwelling needle can be used as it is to easily and leak the drip route and the patient's blood vessel. An object is to provide a liquid flow pipe connecting member that can be connected without the need.
［前記目的を達成するための手段］ 前記目的を達成するための請求項１に記載の考案は、液
体流路内に留置される中空の外筒針をその一端に有し、
液体を導く液体導入部の他端と、一端開口部の内周面に
液体流通管の端部と嵌合する装着部を有し、前記開口部
に弾性材からなりかつ溝が形成された破断可能な極薄の
膜面を有する蓋を覆設してなる貫通管の他端開口部と
を、弾性管を介して接合してなることを特徴とする液体
流通管接続部材である。[Means for Achieving the Object] The invention according to claim 1 for achieving the object has a hollow outer cylinder needle placed in a liquid channel at one end thereof,
The other end of the liquid introducing portion that guides the liquid and the mounting portion that fits with the end of the liquid flow pipe on the inner peripheral surface of the opening at one end, and the opening is made of an elastic material and has a groove formed to break A liquid flow pipe connecting member, characterized in that the other end opening portion of a through pipe formed by covering a lid having an extremely thin film surface is joined via an elastic pipe.
請求項２に記載の考案は、前記蓋が気体透過性を有する
と共に液体不透過性を有する材料からなる前記請求項１
に記載の液体流通管接続部材である。The invention according to claim 2 is characterized in that the lid is made of a material having gas permeability and liquid impermeability.
The liquid flow pipe connection member according to [4].
［作用］ この考案の液体流通管接続部材においては、たとえば患
者の血管等の液体流路内に留置される中空の外筒針をそ
の一端に有してなる液体導入部と、貫通管とは弾性管を
介して結合され、前記貫通管の一端開口部の内周面に
は、たとえば人工腎臓装置における血液回路の継手など
の液体流通管を嵌合する装着部を設けてあり、さらにこ
の装着部は、弾性材からなりかつ溝が形成された破断可
能な極薄の膜面を有する蓋で覆われている。[Operation] In the liquid flow pipe connecting member of the present invention, the liquid introducing portion having a hollow outer cylinder needle placed at the end in the liquid flow path of the blood vessel of the patient, for example, and the penetrating pipe are elastic. A fitting portion for fitting a liquid flow pipe, such as a joint of a blood circuit in an artificial kidney device, is provided on the inner peripheral surface of the one end opening of the penetrating pipe. Is covered with a lid made of an elastic material and having a rupturable ultrathin film surface with grooves formed therein.
したがって、血管内に前記中空の外筒針を留置した後、
たとえば血液回路の継手の端部で、前記液体流通管接続
部材における蓋を押し破り、そのまま前記継手を前記装
着部に嵌合すると、血管と血液回路の継手とが接続され
る。Therefore, after indwelling the hollow outer cylinder needle in the blood vessel,
For example, when the lid of the liquid flow pipe connecting member is crushed at the end of the blood circuit joint and the joint is fitted into the mounting portion as it is, the blood vessel and the blood circuit joint are connected.
前記継手の端部で蓋を押し破ると、蓋が装着部側に開い
た状態となる。ここで、この蓋は弾性材からなるので、
蓋の破断片は蓋を閉じる方向にシール力を有し、常時継
手に密着して液漏れを防止するとともに継手を装着部内
に安定に保持することとなる。When the lid is crushed at the end of the joint, the lid opens to the mounting portion side. Here, since this lid is made of elastic material,
The broken pieces of the lid have a sealing force in the direction of closing the lid, and are always in close contact with the joint to prevent liquid leakage and stably hold the joint in the mounting portion.
また、たとえば血液回路と患者の血管内とを接続して血
液透析を行った後に、他の液体流通管の継手、たとえば
点滴用チューブの継手とこの考案の液体流通管接続部材
とを接続する場合にあっては、まず前記弾性管を指や嵌
子等で圧迫することにより液体流通管接続部材内の流路
を遮断しつつ、前記血液回路の継手を前記装着部から抜
去する。In addition, for example, after connecting the blood circuit and the blood vessel of the patient to perform hemodialysis, connecting the joint of another liquid flow pipe, for example, the joint of the drip tube and the liquid flow pipe connecting member of the present invention. In this case, first, the joint of the blood circuit is pulled out from the mounting portion while pressing the elastic tube with a finger or a fitting to block the flow path in the liquid flow tube connecting member.
このとき前記弾性管は圧迫されているので血管内から血
液が逆流することなく前記血液回路の継手を抜去するこ
とができる。At this time, since the elastic tube is compressed, the joint of the blood circuit can be removed without backflow of blood from the blood vessel.
ついで、前記装着部にたとえば点滴用チューブ側の継手
を接続してから、前記弾性管の圧迫を解除することによ
り点滴用チューブと患者の血管内との点滴経路を確保す
る。Next, for example, a joint on the side of the drip tube is connected to the mounting portion, and then the compression of the elastic tube is released to secure a drip path between the drip tube and the patient's blood vessel.
また、この際、蓋の破断片は蓋を閉じる方向にシール力
を有し、常時継手に密着して液漏れを防止する。Further, at this time, the fragment of the lid has a sealing force in the direction of closing the lid, and always adheres to the joint to prevent liquid leakage.
［実施例］ 次に、この考案の実施例を示し、この考案についてさら
に具体的に説明する。[Embodiment] Next, an embodiment of the present invention will be shown, and the present invention will be described more specifically.
（実施例１） 第１図は、この考案の一実施例である液体流通管接続部
材を示す断面図である。(Embodiment 1) FIG. 1 is a sectional view showing a liquid flow pipe connecting member which is an embodiment of the present invention.
第１図に示すように、この実施例１に示す液体流通管接
続部材は貫通管１と液体導入部９とを弾性管15で結合し
てなる。As shown in FIG. 1, the liquid flow pipe connecting member according to the first embodiment is formed by connecting the through pipe 1 and the liquid introducing portion 9 with an elastic pipe 15.
たとえば塩化ビニル樹脂、ポリカーボネート、ABS樹脂
などの材質からなる貫通管１の一端の開口する開口部２
には、人工腎臓装置の血液回路の継手または点滴用チュ
ーブの継手を嵌合する装着部３が設けてある。For example, an opening 2 at one end of a through tube 1 made of a material such as vinyl chloride resin, polycarbonate, ABS resin, etc.
Is provided with a mounting portion 3 into which a joint of a blood circuit of an artificial kidney device or a joint of a drip tube is fitted.
この装着部３は、開口部２の開口端４に連続し、且つ、
開口端４の口径と等しい口径を有する破断片収納部５
と、この破断片収納部５の口径よりも小さく、且つ、血
液回路の継手の嵌合部の外径とほぼ同じ大きさの口径を
有する狭小部６とからなる。すなわち、血液回路の継手
の嵌合部は、その先端周縁が狭小部６の周壁に当接した
状態で装着部３に嵌合される。The mounting portion 3 is continuous with the opening end 4 of the opening 2, and
Fragment storage unit 5 having a diameter equal to that of the open end 4
And a narrow portion 6 having a diameter smaller than the diameter of the broken piece storage portion 5 and substantially the same as the outer diameter of the fitting portion of the joint of the blood circuit. That is, the fitting portion of the joint of the blood circuit is fitted to the mounting portion 3 in a state in which the peripheral edge of the tip is in contact with the peripheral wall of the narrow portion 6.
一方、この装着部３は、たとえば塩化ビニル樹脂、シリ
コーンゴム、ブタジエンゴム、ブチルゴム、エチレン−
プロピレンゴム、ポリウレタン、クロロプレンラバー、
ポリイソプレン、シリコーン発泡体などの弾性材からな
る蓋７で覆ってある。On the other hand, the mounting portion 3 is made of, for example, vinyl chloride resin, silicone rubber, butadiene rubber, butyl rubber, ethylene-
Propylene rubber, polyurethane, chloroprene rubber,
It is covered with a lid 7 made of an elastic material such as polyisoprene or silicone foam.
蓋７は貫通管１とは別体に形成してもよいし、貫通管１
と一体に形成してもよい。一体に形成すれば、部品点数
の増加を避けることができる。The lid 7 may be formed separately from the through-pipe 1, through pipe 1
It may be formed integrally with. If they are formed integrally, an increase in the number of parts can be avoided.
第４図および第５図に示すように、この蓋７には、その
膜面を極薄に形成してなる溝８が形成してあり、この溝
８に沿って蓋７は破断可能である。溝８は、たとえば第
４図に示すような十字状に形成してもよいし、第５図に
示すように、中心部（内針が挿通する部分）を避けて形
成してもよい。中央部を避けて形成した場合には、内針
が挿通する段階で蓋７が破断してしまう可能性が低下
し、内針が挿通したときの漏血を防ぐことができる。ま
た、この溝８を装着部３と反対側の表面に形成すれば、
たとえば人工腎臓透析装置における血液回路の継手や点
滴用チューブの継手を嵌合させる際の蓋７を破断する過
程において、血圧により第２図中の矢印の方向に押され
た空気は溝８に沿って、貫通管１の開口端４から排出さ
れる。また、この蓋７を、たとえばシリコーン発泡体
（例；「連泡フィルター」、信越ポリマー（株）製）な
どのように気体透過性を有すると同時に液体不透過性を
有する材質で形成した場合には、前記溝８を形成しなく
ても、貫通管１内の空気は漏血を伴なうことなく蓋７よ
り排出される。As shown in FIG. 4 and FIG. 5, the lid 7 is formed with a groove 8 having an extremely thin film surface, and the lid 7 can be broken along the groove 8. . The groove 8 may be formed, for example, in a cross shape as shown in FIG. 4, or as shown in FIG. 5, avoiding the central portion (the portion through which the inner needle is inserted). If formed so as to avoid the central portion, the possibility that the lid 7 will be broken at the stage of inserting the inner needle is reduced, and blood leakage when the inner needle is inserted can be prevented. Also, if this groove 8 is formed on the surface opposite to the mounting portion 3,
For example, in the process of breaking the lid 7 when fitting the joint of the blood circuit or the joint of the drip tube in the artificial kidney dialysis device, the air pushed by the blood pressure in the direction of the arrow in FIG. And is discharged from the open end 4 of the through tube 1 . When the lid 7 is made of a material having gas permeability and liquid impermeability, such as silicone foam (eg, “open cell filter”, manufactured by Shin-Etsu Polymer Co., Ltd.) Even if the groove 8 is not formed, the air in the through tube 1 is discharged from the lid 7 without causing blood leakage.
この実施例に示す液体流通管接続部材は、このような貫
通管１と液体導入部９とを弾性管15を介して接続してな
る。The liquid flow pipe connecting member shown in this embodiment is formed by connecting such a through pipe 1 and a liquid introducing portion 9 via an elastic pipe 15.
液体導入部９は弾性管15の反対側に外筒針10を有してな
る。The liquid introducing portion 9 has an outer cylinder needle 10 on the opposite side of the elastic tube 15.
この外筒針10は、留置針であり、先端を患者の血液内に
挿入したままで使用するものである。The outer cylinder needle 10 is an indwelling needle and is used with the tip inserted into the blood of the patient.
外筒針10の形成に用いる材質としては、たとえばポリプ
ロピレン樹脂、ポリエチレン樹脂、ポリエステル樹脂、
テフロン樹脂、ポリウレタン樹脂などが挙げられる。Examples of the material used to form the outer cylinder needle 10 include polypropylene resin, polyethylene resin, polyester resin,
Examples thereof include Teflon resin and polyurethane resin.
この外筒針10の先端を患者の血液内に挿入するには、外
筒針10の筒内に、この液体流通管接続部材の全長よりも
長い全長を有する金属製の内針11を前記開放端４側から
挿入し、この内針11の先端に設けた穿刺部12で患者の皮
膚および血管を穿刺することにより外筒針10の先端を血
管内に案内する。To insert the tip of the outer cylinder needle 10 into the blood of the patient, a metal inner needle 11 having a total length longer than the total length of the liquid flow pipe connecting member is inserted into the cylinder of the outer cylinder needle 10. The distal end of the outer tubular needle 10 is guided into the blood vessel by inserting from the side and puncturing the skin and the blood vessel of the patient with the puncturing portion 12 provided at the tip of the inner needle 11.
すなわち、内針11を外筒針10に挿入したときに、内針11
の先端に設けた穿刺部12は外筒針10の先端より突出する
ことになるのであるが、この内針11の突出する部分の長
さ（第２図中、ｌで示す。）は、外筒針10の先端が血管
内に臨むとともに内針11の穿刺部12が血管を突き破らな
い程度であることが好ましい。That is, when the inner needle 11 is inserted into the outer cylinder needle 10, the inner needle 11
The puncture part 12 provided at the tip of the outer needle is projected from the tip of the outer needle 10. The length of the protruding portion of the inner needle 11 (indicated by 1 in FIG. 2) is the outer needle. It is preferable that the tip of 10 faces the inside of the blood vessel and that the puncture portion 12 of the inner needle 11 does not break through the blood vessel.
内針11の突出する部分の長さｌをこのように設定するた
めには、第２図に示すように、内針11の操作部13に位置
決めフランジ14を設けておくのもよい。In order to set the length l of the protruding portion of the inner needle 11 in this way, a positioning flange 14 may be provided on the operating portion 13 of the inner needle 11 as shown in FIG.
この実施例の液体流通管において、内針11を外筒針10に
挿通するには、内針11の操作部13を片手に持ち、穿刺部
12で蓋７を穿刺して内針11に設けた位置決めフランジ14
が蓋７に当接するまで内針11を押し込む。位置決めフラ
ンジ14が蓋７に当接すると、内針11の穿刺部12を含む先
端が所定の長さだけ外筒針10の先端より突出する。この
とき、蓋７は未だ破断しない。In the liquid flow tube of this embodiment, in order to insert the inner needle 11 into the outer cylindrical needle 10, hold the operating portion 13 of the inner needle 11 in one hand and insert the puncture portion.
Positioning flange 14 provided on inner needle 11 by piercing lid 7 with 12
The inner needle 11 is pushed in until it contacts the lid 7. When the positioning flange 14 comes into contact with the lid 7, the tip of the inner needle 11 including the puncture portion 12 projects from the tip of the outer tubular needle 10 by a predetermined length. At this time, the lid 7 is not yet broken.
外筒針10の先端より突出した内針11の穿刺部12で患者の
皮膚および血管を穿刺すると、それに伴なって外筒針10
の先端が血管内に臨む。この状態で内針11を蓋７の方向
から引き抜くと、蓋７はゴム弾性体であるので、針穴が
塞がり、針穴からの血液の流出を防ぐ。When the patient's skin and blood vessel are punctured by the puncture portion 12 of the inner needle 11 protruding from the tip of the outer cylinder needle 10, the outer cylinder needle 10
The tip of is exposed in the blood vessel. When the inner needle 11 is pulled out from the lid 7 in this state, since the lid 7 is a rubber elastic body, the needle hole is closed and the outflow of blood from the needle hole is prevented.
次に、血液が蓋７に達する前に、第３図に示す人工腎臓
装置の血液回路の継手30を蓋７に強く押し当てると、蓋
７が破断して継手30の先端部31が貫通管１の装着部３内
に臨む。すると、この液体流通管接続部材内に血圧と外
気圧との圧力差が生じるので、外筒針10内に血液が流入
し、この血液は液体導入部９内、弾性管15内および貫通
管１内の空気を開口部２側に押しやりながら、なおも流
入を続ける。したがって、前記空気は、蓋７の破断片に
残存する溝８に沿って、開口端４から排出される。Next, before the blood reaches the lid 7, the joint 30 of the blood circuit of the artificial kidney device shown in FIG. 3 is strongly pressed against the lid 7, so that the lid 7 is broken and the tip 31 of the joint 30 penetrates the through tube. It faces the inside of the mounting portion 3 of 1 . Then, a pressure difference between the blood pressure and the outside air pressure is generated in the liquid flow pipe connecting member, so that blood flows into the outer cylinder needle 10, and the blood flows into the liquid introducing portion 9, the elastic pipe 15, and the penetrating pipe 1 . The air continues to flow while pushing the air toward the opening 2 side. Therefore, the air is discharged from the open end 4 along the groove 8 remaining in the fragment of the lid 7.
なお、この蓋７が気体透過性を有すると同時に液体不透
過性を有する材質からなる場合には、内針11を引き抜く
だけで、液体導入部９内、弾性管15内および貫通管１内
の空気は蓋７から排出される。If the lid 7 is made of a material that is gas-permeable and liquid-impermeable at the same time, the inner needle 11 is simply pulled out to remove the liquid from the inside of the liquid introducing portion 9, the elastic tube 15, and the through tube 1 . Air is discharged from the lid 7.
液体導入部９内、弾性管15内および貫通管１内の空気が
全て排出された後に、血液回路の継手をさらに押し込む
と、蓋７の破断片は破断片収納部５に収納されるので、
この破断片が装着部３への継手の嵌合を妨げることはな
い。しかも、この破断片は弾性材よりなるので、蓋７を
閉じる方向にシール力を有し、継手の外周に密着して継
手を安定に保持するとともに継手と破断片との接触面か
らの漏血を防止する。When all the air in the liquid introducing portion 9, the elastic tube 15 and the penetrating tube 1 is exhausted and the joint of the blood circuit is further pushed, the broken pieces of the lid 7 are stored in the broken piece storage portion 5,
This broken piece does not prevent fitting of the joint to the mounting portion 3. Moreover, since this broken piece is made of an elastic material, it has a sealing force in the direction of closing the lid 7 and adheres to the outer periphery of the joint to hold the joint stably and blood leakage from the contact surface between the joint and the broken piece. Prevent.
継手30の先端部31が、貫通管１の狭小部６の周端部に当
接すれば、血液回路の継手30と貫通管１との接続が完了
する。Distal end portion 31 of the joint 30, if those Sessure the peripheral end portion of the narrow portion 6 of the through-pipe 1, the connection between the through-pipe 1 and joint 30 of the blood circuit is completed.
なお、この実施例に示す液体流通管接続部材において、
たとえば血液透析に続いて、点滴を行うべく前記血液回
路の継手30に代えて点滴用チューブの継手（図示しな
い。）を装着部３に嵌合する場合にあっては、まず弾性
管15を指または嵌子等でクランプする。In the liquid flow pipe connection member shown in this example,
For example, in the case where a drip tube joint (not shown) is fitted to the mounting portion 3 in place of the blood circuit joint 30 to perform drip infusion following hemodialysis, first, the elastic tube 15 is designated. Or clamp it with an insert.
なお、弾性管15の材質としては、弾性を有し、かつ、こ
の考案の目的を阻害しない限りにおいて特に制限はな
く、たとえば塩化ビニル樹脂、シリコーンゴム、ブタジ
エンゴム、ブチルゴム、エチレン−プロピレンゴム、ポ
リウレタン、クロロプレンラバー、ポリイソプレン等を
挙げることができる。The material of the elastic tube 15 is not particularly limited as long as it has elasticity and does not impair the purpose of the present invention, for example, vinyl chloride resin, silicone rubber, butadiene rubber, butyl rubber, ethylene-propylene rubber, polyurethane. , Chloroprene rubber, polyisoprene and the like.
このように弾性管15をクランプすることにより、血管内
と前記血液回路との間の流路を遮断する。By clamping the elastic tube 15 in this manner, the flow path between the blood vessel and the blood circuit is blocked.
つぎに、前記血液回路の継手30を前記装着部３から抜去
する。Next, the joint 30 of the blood circuit is removed from the mounting portion 3.
この際、この考案の液体流通管接続部材は、弾性管15を
クランプしているので前記開放端４からの血液の流出を
防止することができる。At this time, since the liquid flow pipe connecting member of the present invention clamps the elastic pipe 15, blood can be prevented from flowing out from the open end 4.
前記点滴用チューブの継手は、このように血液回路の継
手30を抜去した後の前記装着部３に接続する。The joint of the drip tube is connected to the mounting portion 3 after the joint 30 of the blood circuit is removed in this way.
なお装着部３への接続は、前記血液回路の継手30を前記
装着部３に接合したときと同様に、前記点滴用チューブ
の継手の先端部（図示しない。）が、貫通管１の狭小部
６の終端部に当接すれば完了する。Note that the connection to the mounting portion 3 is similar to when the joint 30 of the blood circuit is joined to the mounting portion 3, and the distal end portion (not shown) of the joint of the drip tube is a narrow portion of the through tube 1 . When it contacts the end of 6, it is completed.
また、蓋７の破断片は弾性材よりなるので、前記血液回
路の継手30を前記装着部３に接合したときと同様に、蓋
７を閉じる方向にシール力を有し、継手の外周に密着し
て継手を安定に保持するとともに継手と破断片との接触
面から点滴に用いる薬液が漏出するのを防止する。Further, since the fragment of the lid 7 is made of an elastic material, it has a sealing force in the closing direction of the lid 7 and closely adheres to the outer periphery of the joint, as when the joint 30 of the blood circuit is joined to the mounting portion 3. Thus, the joint is stably held and the chemical liquid used for the drip is prevented from leaking from the contact surface between the joint and the broken piece.
以上に詳述したように、この考案の液体流通管接続部材
によると、液体流通管の先端で蓋７を押し破り、装着部
３に嵌合するだけで、液体流通管を接続することがで
き、従来の接続部材のように接続の際に特別のテクニッ
クを要したり、面倒な気泡抜きの操作を要したりするこ
となく、しかも液漏れの心配がない。As described in detail above, according to the liquid flow pipe connecting member of the present invention, the liquid flow pipe can be connected only by pushing the lid 7 at the tip of the liquid flow pipe and fitting it into the mounting portion 3. As in the conventional connecting member, no special technique is required at the time of connection or a troublesome operation of removing air bubbles is required, and there is no fear of liquid leakage.
また、この考案の液体流通管接続部材によると、たとえ
ば血液透析に続いて点滴を行うような場合に、同一の留
置針を用いて血液透析と点滴とを行うことができるの
で、注射針を刺しかえたり、また別の経路で点滴を行う
という煩雑な操作を回避することができるとともに、面
倒な気泡抜きの操作を要したりすることなく、しかも液
漏れの心配がない。Further, according to the liquid flow pipe connecting member of the present invention, for example, when performing infusion after hemodialysis, hemodialysis and infusion can be performed using the same indwelling needle, so that the injection needle is punctured. In addition, it is possible to avoid a complicated operation of performing drip infusion on another route, and without requiring a troublesome operation of removing bubbles, and there is no fear of liquid leakage.
（実施例２） 第６図は、この考案の他の実施例である液体流通管接続
部材の説明図である。(Embodiment 2) FIG. 6 is an explanatory view of a liquid flow pipe connecting member which is another embodiment of the present invention.
第６図に示すように、この実施例の液体流通管接続部材
は、実施例１と同様の貫通管1aを液体導入部としての分
岐管41に弾性管15aを介して形成した。As shown in FIG. 6, in the liquid flow pipe connecting member of this embodiment, the same through pipe 1a as that of the first embodiment is formed in the branch pipe 41 as the liquid introducing portion via the elastic pipe 15a.
前記分岐管41は、直線状の直管40に交わって設けられ
る。直管40の先端部は液体導入部９を装着し、直管40の
他端部には弾性管15を介して前記実施例１におけるのと
同様の貫通管１が装着される。The branch pipe 41 is provided so as to intersect with the straight straight pipe 40. The liquid introducing portion 9 is attached to the tip end of the straight pipe 40, and the through pipe 1 similar to that in the first embodiment is attached to the other end of the straight pipe 40 via the elastic pipe 15.
この液体流通管接続部材を使用するに際し、前記弾性管
15を圧迫して、血管方向からの前記貫通管１への液体の
流通を遮断することのできる構成を有すればよく、この
考案は弾性管15を介して貫通管１を有するかぎり、弾性
管15を設ける位置は特に制限するものではない。When using this liquid flow pipe connecting member, the elastic pipe
It suffices that the device has a configuration capable of blocking the flow of the liquid from the blood vessel direction to the penetrating pipe 1 by pressing 15 and this invention is not limited to the elastic pipe as long as the penetrating pipe 1 is provided through the elastic pipe 15. The position where 15 is provided is not particularly limited.
この実施例における液体流通管接続部材は、以上に示す
ように、点滴チューブと人工腎臓装置の血液回路の継手
との接続などの医療器具分野に好適に用いることができ
る。また、液体流通管の接続が液体に触れずに行なえる
ので、たとえば毒性を有する液体の流通管と廃液チュー
ブとの接続などのように医療器具以外の分野にも好適に
用いることができる。As described above, the liquid flow tube connection member in this example can be suitably used in the field of medical devices such as connection between an infusion tube and a joint of a blood circuit of an artificial kidney device. Further, since the liquid flow pipe can be connected without touching the liquid, the liquid flow pipe can be suitably used in fields other than medical instruments, such as connecting a liquid flow pipe having toxicity and a waste liquid tube.
［考案の効果］ この考案によると、 （１）一端開口部を、弾性材からなりかつ溝が形成され
た破断可能な極薄の膜面を有する蓋で覆っているので、
液体流通管を接続する際に液体流通管の先端で蓋を押し
破ってそのまま嵌合すれば、接続が完了し、 （２）したがって、従来の液体流通管接続部材のように
液体流通管を接続する際に、蓋を取り外す必要がないの
で、操作が容易であり、 （３）しかも、たとえば血液透析装置の血液回路と患者
の血管とを接続する際に使用する留置針に形成すれば、
面倒なクランプの操作や気泡抜きの操作が不要となるの
で、その取り扱いがきわめて容易になり、 （４）さらに、この血液透析の後に続いてたとえば点滴
を行うに際して、その留置針をそのまま使用して点滴経
路と患者の血管とを容易にかつ液漏れなく接続すること
ができる等の種々の利点を有する液体流通管接続部材を
提供することができる。[Advantages of the Invention] According to the present invention, (1) the opening at one end is covered with a lid having a rupturable ultrathin film surface made of an elastic material and having grooves formed,
When the liquid flow pipe is connected, if the lid is crushed at the tip of the liquid flow pipe and fitted as it is, the connection is completed. (2) Therefore, the liquid flow pipe is connected like a conventional liquid flow pipe connecting member. Since it is not necessary to remove the lid at the time of operation, it is easy to operate. (3) Moreover, if it is formed on the indwelling needle used when connecting the blood circuit of the hemodialysis machine and the blood vessel of the patient, for example,
Since the troublesome operation of the clamp and the operation of removing the air bubbles are unnecessary, the handling becomes extremely easy. (4) Furthermore, when performing, for example, infusion after this hemodialysis, the indwelling needle can be used as it is. It is possible to provide a liquid flow pipe connecting member having various advantages such as easy connection of a drip route and a blood vessel of a patient without liquid leakage.
第１図は、この考案の液体流通管接続部材の一例を示す
断面図、第２図および第３図は同じくその使用状態を示
す説明図、第４図はこの考案の液体流通管における蓋の
一例を示す説明図、第５図は同じく他の例を示す説明
図、第６図はこの考案の液体流通管接続部材の他の一例
を示す説明図、第７図および第８図はそれぞれ従来の液
体流通管接続部材の一例を示す断面図である。１ ……貫通管、３……装着部、 ７……蓋、９……液体導入部、 10……外筒針、11……内針、 15……弾性管、FIG. 1 is a cross-sectional view showing an example of a liquid flow pipe connecting member of the present invention, FIGS. 2 and 3 are explanatory views showing the same usage state, and FIG. 4 is a view of a lid of the liquid flow pipe of the present invention. FIG. 5 is an explanatory view showing another example, FIG. 5 is an explanatory view showing another example, FIG. 6 is an explanatory view showing another example of the liquid flow pipe connecting member of the present invention, and FIGS. FIG. 6 is a cross-sectional view showing an example of the liquid flow pipe connection member of FIG. 1 ... Penetration tube, 3 ... Mounting part, 7 ... Lid, 9 ... Liquid introducing part, 10 ... Outer tube needle, 11 ... Inner needle, 15 ... Elastic tube,
Claims (2)
の一端に有し、液体を導く液体導入部の他端と、一端開
口部の内周面に液体流通管の端部と嵌合する装着部を有
し、前記開口部に弾性材からなりかつ溝が形成された破
断可能な極薄の膜面を有する蓋を覆設してなる貫通管の
他端開口部とを、弾性管を介して接合してなることを特
徴とする液体流通管接続部材。1. A hollow outer cylinder needle retained in a liquid flow path at one end thereof, the other end of a liquid introducing portion for guiding a liquid, and one end of a liquid flow pipe on an inner peripheral surface of an opening portion. The other end opening of the through-pipe, which has a fitting portion to be fitted and which covers the lid having a rupturable ultrathin film surface in which a groove is formed and which is made of an elastic material in the opening, A liquid flow pipe connecting member characterized by being joined via an elastic pipe.
透過性を有する材料からなる前記請求項１に記載の液体
流通管接続部材。2. The liquid flow pipe connecting member according to claim 1, wherein the lid is made of a material having gas permeability and liquid impermeability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989024456U JPH0639724Y2 (en) | 1989-03-03 | 1989-03-03 | Liquid distribution pipe connection member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989024456U JPH0639724Y2 (en) | 1989-03-03 | 1989-03-03 | Liquid distribution pipe connection member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02116461U JPH02116461U (en) | 1990-09-18 |
| JPH0639724Y2 true JPH0639724Y2 (en) | 1994-10-19 |
Family
ID=31244319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989024456U Expired - Fee Related JPH0639724Y2 (en) | 1989-03-03 | 1989-03-03 | Liquid distribution pipe connection member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639724Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186870A (en) * | 1986-02-12 | 1987-08-15 | テルモ株式会社 | Branch pipe |
-
1989
- 1989-03-03 JP JP1989024456U patent/JPH0639724Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02116461U (en) | 1990-09-18 |
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