JP2003033441A - Three-way cock - Google Patents

Three-way cock

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Publication number
JP2003033441A
JP2003033441A JP2001221262A JP2001221262A JP2003033441A JP 2003033441 A JP2003033441 A JP 2003033441A JP 2001221262 A JP2001221262 A JP 2001221262A JP 2001221262 A JP2001221262 A JP 2001221262A JP 2003033441 A JP2003033441 A JP 2003033441A
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JP
Japan
Prior art keywords
provided
way stopcock
cock
portion
flow path
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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.)
Pending
Application number
JP2001221262A
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Japanese (ja)
Inventor
Hiroshi Araki
浩 荒木
Original Assignee
Terumo Corp
テルモ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Terumo Corp, テルモ株式会社 filed Critical Terumo Corp
Priority to JP2001221262A priority Critical patent/JP2003033441A/en
Publication of JP2003033441A publication Critical patent/JP2003033441A/en
Application status is Pending legal-status Critical

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Classifications

    • 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
    • A61M39/22Valves or arrangement of valves
    • A61M39/223Multiway valves

Abstract

PROBLEM TO BE SOLVED: To provide a three-way cock, where a patient himself can switch flowing channels easily and accurately and an insoluble substance is made hard to clog, in the three-way stopcock used in a peritoneal dialysis circuit. SOLUTION: The three-way cock 1 comprises a main body 2 having three branching tubes 4 on the outer periphery of a cylindrical part 5, and a cock 3 which is rotatably fit to the inside of the main body 2 and is provided with flow paths 10 corresponding to the three branching tubes 4 and having a barrel part 6, and a lever 7 is provided in the cock 3. The barrel part 6 is provided with a protrusion 9 on the outer periphery thereof, and the cylindrical part 5 is provided with a recess 8 which can receive the protrusion 9. The protrusion 9 has a saw blade shape which reduces in the rotational direction and can rotate only in one direction. The barrel part 6 is provided with three flow paths 10 corresponding to three branching tubes 4, and the flow paths 10 join together within the barrel part 6. The joined flow path 11 has an arc shape formed along the periphery of the barrel part 6.

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、流体の流路を切り替えるための三方活栓に関する。 BACKGROUND OF THE INVENTION [0001] [Technical Field of the Invention The present invention relates to a three-way stopcock for switching the flow path of the fluid. 特に腹膜透析などに用いられ、腹膜透析時に腹腔内への薬液注入や腹腔内からの排出を行うために適した三方活栓に関する。 Particularly used in such peritoneal dialysis, to a three-way stopcock suitable for carrying out the discharge from the liquid injection or intraperitoneal intraperitoneal during peritoneal dialysis. 【0002】 【従来の技術】従来、腹膜透析などに用いられている医療用の流路切替器は、流路内の汚染を防止するために流路をできるだけ開放しないようにしたシステムが採用されている。 [0004] Conventionally, a flow path switcher for medical use is used in such peritoneal dialysis, the system was not only openable the flow path to prevent contamination of the flow path is employed ing. しかし、こうしたシステムは回路が複雑であり薬液の注入や排出を行う際に、流路の切替操作が必要となる。 However, such systems when performing injection and discharge of the circuit is complicated chemical, switching operation of the channel is required. この切替操作は、通常、流路の軟質チューブをクランプなどで開閉する方法で行われているが、複数のクランプを同時に操作するなど、煩雑な操作が要求される。 This switching operation is usually are carried out in a manner to open and close the soft tube of the flow path such as a clamp, such as operating a plurality of clamps at the same time, complicated operations are required. また、その際に操作を間違うことにより、薬液の逆流や空気の流入などのトラブルが発生することが指摘されている。 Also, by mistake the operation at that time, troubles such as reverse flow and air inflow of the liquid medicine has been pointed out to occur. 【0003】このようなトラブルの発生を防止するため、特表平2−502882が開示されている。 [0003] In order to prevent the occurrence of such trouble, Hei 2-502882 is disclosed. これは複数のクランプを使用せずに、透析液バッグに接続されたチューブと、排液バッグに接続されたチューブと、患者の腹腔に接続されたチューブとを三方活栓を介して接続し、この三方活栓を操作することによって、腹腔への透析液注入、腹腔からの透析液の排液を行おうとするものである。 This is without a plurality of clamps, connected through a tube connected to a dialysate bag, a tube connected to the drain bag, the three-way stopcock and a tube connected to the patient's abdominal cavity, the by operating the three-way stopcock, the dialysate infusion into the peritoneal cavity, is intended to be subjected to drainage of the dialysate from the peritoneal cavity. しかしながらこの三方活栓を利用した腹膜透析装置は、弁の切替操作をするために腕部を回転させて切り替えを行うが、腕部を反対に回転させたりする操作が伴うこともあり、使用者に煩雑な操作が要求されていた。 However peritoneal dialysis apparatus that utilizes this three-way stopcock is to switch by rotating the arms to the switching operation of the valve, sometimes accompanied by operation or rotate the arm portion opposite to the user a complicated operation has been requested. 【0004】 【発明が解決しようとする課題】本発明は、こうした腹膜透析の治療に用いられる腹膜透析装置において、患者自身が流路の切り替えを行う上で、安全で簡単かつ確実に行うことができ、不溶物が詰まり難い三方活栓の提供にある。 [0004] [SUMMARY OF THE INVENTION The present invention provides a peritoneal dialysis apparatus for use in the treatment of such peritoneal dialysis, on the patient's own to switch the flow path, be carried out safely and easily and surely It can be to provide particulate matter clogging hardly three-way stopcock. 【0005】 【課題を解決するための手段】本発明は、以下により課題を解決することができる。 [0005] The present invention SUMMARY OF THE INVENTION can be solved the problems below. 【0006】(1)円筒部の外周に分岐管を有する本体と、前記円筒部内に回動自在に嵌合し、前記分岐管に対応する流路が形成された胴部を有するコックとで構成された三方活栓であって、前記コックは一方向のみ回転することを特徴とする三方活栓。 [0006] a body having a (1) branch pipes on the outer circumference of the cylindrical portion, fitted rotatably into the cylindrical portion, composed of a cock having a body portion flow path is formed corresponding to the branch pipe a is three-way stopcock and the cock three-way stopcock, characterized in that the rotating only in one direction. 【0007】(2)前記胴部の外周には凸部が設けられ、前記円筒部の内周には凹部が設けられ、前記凸部は回転方向に向かって漸減する鋸刃形状を有することを特徴とする(1)記載の三方活栓。 [0007] (2) wherein the outer periphery of the body protruding portion is provided, the inner in the circumferential recess of the cylindrical portion is provided, said projections having a saw blade shape that gradually decreases in the rotational direction wherein (1) a three-way stopcock described. 【0008】(3)前記円筒部の内周には凸部が設けられ、前記胴部の外周には凹部が設けられ、前記凸部は回転方向に向かって漸減する鋸刃形状を有することを特徴とする(1)記載の三方活栓。 [0008] (3) on the inner periphery of the cylindrical portion convex portion is provided, the recess is provided on the outer periphery of the body portion, said convex portion having a saw blade shape that gradually decreases in the rotational direction wherein (1) a three-way stopcock described. 【0009】(4)前記凹部は複数設けられていることを特徴とする(2)または(3)記載の三方活栓。 [0009] (4) the recess, characterized in that it provided a plurality (2) or (3) three-way stopcock described. 【0010】(5)前記流路の合流する前記胴部の内部は円周に沿った円弧形状を有することを特徴とする(1)から(4)記載の三方活栓。 [0010] (5) the channel the barrel of the interior, characterized in that it has an arc shape along the circumference (1) to (4) three-way stopcock according to confluence of. 【0011】(6)前記本体と前記コックには一回転防止するための回転止めを設けたことを特徴とする(1) [0011] (6) wherein the body and the cock, characterized in that a rotation stopper for preventing one revolution (1)
から(5)記載の三方活栓。 (5) three-way stopcock described. 【0012】(7)(1)から(5)記載の三方活栓を有することを特徴とする腹膜透析装置。 [0012] (7) (1) to (5) peritoneal dialysis apparatus characterized by having a three-way stopcock described. 【0013】 【発明の実施の形態】本発明の三方活栓について図を用いて詳細に説明する。 [0013] will be described in detail with reference to the drawings three-way stopcock of the embodiment of the present invention. 図1は本発明の三方活栓の斜視図であって、図2は本発明の三方活栓の分解斜視図である。 Figure 1 is a perspective view of a three-way stopcock of the present invention, FIG 2 is an exploded perspective view of a three-way stopcock of the present invention. 図3は本発明の三方活栓の上面透視図である。 Figure 3 is a top perspective view of a three-way stopcock of the present invention. 図4 Figure 4
は本発明の三方活栓の一部断面側面図であり、図5は図4のA−A´線の断面図である。 Is a partially sectional side view of a three-way stopcock of the present invention, FIG 5 is a sectional view of A-A'line in FIG. 図6は図2のB−B´ 6 B-B'in Fig. 2
線の断面図である。 It is a cross-sectional view taken along a line. 【0014】本発明の三方活栓1は円筒部5の外周に分岐管4を有する本体2と、本体2の内部に回動自在に嵌合し、分岐管4に対応する流路10が形成された胴部6 [0014] three-way stopcock of the present invention is a main body 2 having a branch pipe 4 on the outer circumference of the cylindrical portion 5 fitted rotatably inside the main body 2, the channel 10 is formed corresponding to the branch pipe 4 the body part 6
を有するコック3とから構成されている。 And a cock 3 and having a. さらにコック3には、操作性を向上させるためレバー7が設けられているのが好ましい。 More cock 3, preferably a lever 7 for improving the operability is provided. また、円筒部5と胴部6の下部を密封するための蓋体12を設けた構成としてもよく、また胴部6を有底としてもよい。 Also, it may be a structure in which a lid 12 for sealing the lower portion of the cylindrical portion 5 and the body 6, also the barrel 6 may be a bottom. 【0015】図1に示されるように円筒部5の外周に設けられた3つの分岐管4は、これらのうちの2つの分岐管が直線上に配置され、もう1つの分岐管がこの直線と直交するよう配置されている。 [0015] Three branch pipes 4 provided on the outer circumference of the cylindrical portion 5 as shown in FIG. 1, two branch pipes of these are arranged on a straight line, another branch pipe and the straight line It is arranged to orthogonally. 分岐管4の先端は用途に応じて様々な接続部を設定可能とすることができる。 The tip of the branch pipe 4 can be configurable for various connection portion depending on the application. この3つの分岐管4に対応するように胴部6の内部に3つの流路10が設けられており胴部6の内部で流路10が合流する。 Flow path 10 in the interior of the barrel body portion 6 inside the three flow paths 10 are provided in 6 so as to correspond to the three branch pipes 4 are merged. またこのような構成に替えて、それぞれ3つの分岐管4と流路10の間隔を120度間隔としてもよい(図示せず)。 Also in place of this structure, each interval of the three branch pipes 4 and the flow path 10 may be a 120 degree intervals (not shown). 【0016】図5で示されるように本発明の三方活栓1 The three-way stopcock 1 of the present invention as shown in Figure 5
は、胴部6の外周に凸部9が設けられており、円筒部5 The convex portion 9 is provided on the outer periphery of the body portion 6, the cylindrical portion 5
にはこの凸部9を受け入れ可能な凹部8が設けられている。 Recesses 8 capable of receiving the protrusion 9 is provided on the. この凸部9は、1個でも複数個設けてもよい。 The protrusions 9 may be a plurality of provided even one. また、凹部8については、複数あるのが好ましく、3個から8個あるのがより好ましい。 Also, the recess 8 is preferably plural, more preferably from 3 are eight. この3個から8個ある凹部は、等間隔に設けられているのがよい。 Recess from the three is eight, it is preferable provided at equal intervals. このようにすることで、三方活栓1を所望の開通状態あるいは閉鎖状態とすることが可能となる。 In this way, the three-way stopcock 1 can be set to a desired open state or a closed state. 【0017】また、図示しないが凸部を円筒部の内周に設け、凹部を胴部の外周に設けた構成としてもよい。 Further, although not shown is provided a convex portion on the inner periphery of the cylindrical portion may have a structure in which a recess on the outer periphery of the body portion. コック3を回転させると胴部6も回転し、この凸部9が凹部8に受け入れられることにより、凹部8が設けられた位置で、胴部6が係止する。 Rotating cock 3 barrel 6 is also rotated, the convex portion 9 by being received in recess 8, at a position where the recess 8 is provided, the barrel 6 is locked. 【0018】図5で示されるように凸部9は、回転方向に向かって漸減する鋸刃形状を有することが好ましい。 The protrusions 9, as shown in Figure 5 preferably has a saw blade shape that gradually decreases toward the direction of rotation.
これにより、一方向にコック3を回転させたとき胴部6 Barrel 6 when Thus, rotating the cock 3 in one direction
は回転可能であるが、逆方向へは係合する力が強く逆回転できないようになっている。 Is rotatable, so that can not reverse rotate strongly forces engaged in the opposite direction. 凹部8の形状は凸部を受け入れられる形状であれば特に限定されず、例えば図5 The shape of the recess 8 is not particularly limited as long as the shape to be received a protruding portion, for example, FIG. 5
からも理解されるように、凸部9の鋸刃形状に対応した形状としてもよい。 As can be understood from, it may have a shape corresponding to the saw blade shape of the convex portion 9. 【0019】また、このような凸部9の鋸刃形状に替えて、図示しないが一方向にのみ回転可能であればどのような構成であってもよい。 Further, instead of the saw blade shape of such protrusions 9, although not shown may be rotated if any configuration in one direction only. 例えば、凸部を板ばね状に形成してもよい。 For example, may be formed convex portions like a leaf spring. このようにすることで回転可能な方向へ操作しているとき、板ばねは縮み、回転可能となるが、 When operating the rotatable direction by this way, the leaf springs shrinks, becomes rotatable,
板ばねが凹部に達したときに広がるので、逆回転させようとしたとき、凹部とその板ばねの広がりが噛み合うため、一方向への回転は可能となるが、逆転させることができなくなる。 Since spread when the leaf spring reaches into the recess, when it is attempted to reverse rotation, since the recess and the spread of the plate spring is engaged, the rotation in one direction is allowed, it is impossible to reverse. 【0020】この逆転を防止する凸部9と凹部8は、円筒部5の内周部と胴部6の外周部にそれぞれ45度間隔で8ヶ所ずつに設けられていてもよいが、図5で示されるように凹部8を8ヶ所設け、凸部9を2ヶ所設けることによって、凹部8と凸部9との抵抗が減少し、回転操作を向上することができるので好ましい。 The protrusions 9 and the recesses 8 to prevent this reversal may be provided in eight locations in each 45-degree intervals on the inner peripheral portion and the outer peripheral portion of the body portion 6 of the cylindrical portion 5, FIG. 5 in the recess 8 provided eight positions as shown, by providing the protrusions 9 2 places, the resistance between the recess 8 and the convex portions 9 is reduced, preferably it is possible to improve the rotational operation. この凹部8は分岐管4および流路10が設けられている位置の円筒部5または胴部6の下部に設けられており、ここから45 The recess 8 is provided in the lower portion of the cylindrical portion 5 or the barrel 6 of the position the branch pipe 4 and the flow path 10 is provided, from which 45
度間隔で合計8ヶ所の凹部8がそれぞれ設けられている。 Recess 8 of a total of eight locations in degrees intervals, respectively. また凸部9は、180度間隔で2ヶ所設けられている。 The protrusions 9 are provided in two places at intervals of 180 degrees. 【0021】このような位置に凸部9と凹部8を設置することで詳細は後述するが、三方活栓1を操作する上で都合がよい。 [0021] As described below in more placing the protrusions 9 and the recesses 8 in such a position, it is advantageous in manipulating the three-way stopcock 1. さらに、このように凸部9と凹部8をそれぞれ8ヶ所に設けることで、目的の位置に確実にコック3を係止させることができるとともにクリック感が生じ、このクリック感によって、係止位置を通り過ぎることを回避できる。 Furthermore, in this manner by providing the protrusions 9 and the recesses 8 each 8 places, click feeling is generated it is possible to reliably engaged the cock 3 to the desired position, this click feeling, the locking position possible to avoid the pass. また、凹部8がこのように8ヶ所設けられている場合は、凸部9は1ヶ所以上であればその機能を有する。 Further, if the recesses 8 are provided in this manner eight positions, the protrusions 9 has its function if more than one position. 【0022】図7は本発明の三方活栓にカバー22を装着したときの上面図である。 FIG. 7 is a top view when mounting the cover 22 to the three-way stopcock of the present invention. 図7に示すように三方活栓21のレバー17と分岐管14a、14b、14cの間にカバー22を設置し、このカバー22に操作状況を示す文字を付した。 Lever 17 and the branch pipe 14a of the three-way stopcock 21 as shown in FIG. 7, 14b, and place the cover 22 during 14c, denoted by the letter indicating the operation status to the cover 22. レバー17は胴部16の他の2つの流路20a、20cと直交する流路20b上に設けられている。 Lever 17 is provided on the flow path 20b perpendicular other two flow paths 20a of the body portion 16, 20c and. このカバー22上には、「準備」「排液」「停止」「充填」「停止」「注液」「終了」の順番で文字を付するのが好ましい。 On the cover 22, "Preparation" of subjecting the "drainage", "stop", "fill", "stop", "liquid injection" sequence with the letter "end" is preferred. 【0023】カバー22上の文字の配列は、円筒部15 [0023] The sequence of letters on the cover 22, the cylindrical portion 15
に設けられた他の2つの分岐間14a、14cと直行する中央の分岐管14bを起点に45度ずれた位置に「準備」が付され、続いて前述の文字の順にそれぞれ45度間隔で付されていると、流路の開通状態(腹膜透析の作業状態)を認識できるので都合がよい。 Orthogonal to the other two branches between 14a, 14c provided in the branch pipe 14b position shifted 45 degrees starting from the central "Preparation" is assigned, it followed with each 45 degree intervals in the order of the aforementioned character and it has been, it is convenient because it recognizes the open state of the channel (work state of peritoneal dialysis). 【0024】このように45度間隔の位置に「準備」 [0024] "Preparation" in the position of those 45-degree intervals
「排液」「停止」「充填」「停止」「注液」「終了」の順番で付され、凹部も45度間隔で8ヵ所に設けられていると、胴部16を回転させレバー17がカバー22に付された文字を指し示したとき、胴部16に設けられた凸部が凹部に受け入れられて一旦係止することにより、 Assigned in the order of "drainage", "stop", "fill", "stop", "infusion" and "End", when provided in eight locations at even 45 degree intervals recess, the lever 17 rotates the barrel 16 when pointed characters attached to the cover 22, the convex portion provided on the body portion 16 is temporarily locking accepted in the recess,
三方活栓21はカバー22に付された文字の状態となる。 Three-way stopcock 21 is in a state of characters attached to the cover 22. 【0025】このとき、凸部は180度間隔で2ヶ所設けられていると、凹部の抵抗が少なく操作性が向上する。 [0025] At this time, the convex portion is provided in two places at intervals of 180 degrees, the resistance of the recesses is less operability is improved. そしてこの三方活栓21を用いて腹膜透析を行うとき、レバー17をこれらの文字が付された位置に順次回転させることによって流路が所望の開通状態となり、一回転で操作が全て終了する。 And when performing peritoneal dialysis using a three-way stopcock 21, the lever 17 will flow path and a desired open state by sequentially rotated to a position where these characters attached, the operation is completed in one rotation. 【0026】また、例えば分岐管14bにレバー17があるとき、回転させるべき方向と逆方向の直近のカバー22上にレバー17の回転を制限できる大きさの突起などを設け、レバー17が一方向のみに一回転しかできない構成とすることも可能である(図示せず)。 Further, for example, when the branch pipe 14b is the lever 17, the projection size, and the like that can limit the rotation of the direction to rotate the opposite direction of the nearest cover 22 on the lever 17 is provided, the lever 17 in one direction it is also possible to adopt a configuration that can only one rotation only (not shown). このようにすることで腹膜透析時に間違った操作をすることがない。 This so as not to the wrong operation at the time of peritoneal dialysis by the. 【0027】図6で示されるように胴部6の内部には、 [0027] Inside the body portion 6 as shown in Figure 6,
3つの流路10が外周から中心に向かって形成されており、3つの流路10が合流する部位は、胴部6の円周に沿った円弧形状の流路11となっている。 Three flow paths 10 are formed toward the center from the periphery, a portion 3 of the flow path 10 are joined has a flow path 11 of circular arc shape along the circumference of the barrel 6. このように胴部6の内部が円弧形状の流路11を有することで、例えば腹膜透析の排液中に万一不溶物(フィブリンやアルブミンなど)が存在した場合、従来の三方活栓のようなT If this way the interior of the body portion 6 to have a flow path 11 of circular arc shape, for example, drainage event insolubles in peritoneal dialysis (such as fibrin or albumin) was present, as in the conventional three-way stopcock T
字形状のように直角の流路の合流部であると、不溶物によって流路が詰まることがあるが、本発明のように円弧形状の流路11であると、こうした問題が発生しにくい。 If it is the confluence of the right angle of the flow path as shaped, but it may flow channel is clogged by insolubles, if it is the flow path 11 of circular arc shape as in the present invention, this problem is less likely to occur. 本発明の三方活栓の材料は、ポリプロピレンなどの耐薬品性のある合成樹脂などが好ましいが、材料は特に限定されず金属などを用いてもよい。 Material of the three-way stopcock of the present invention is chemical resistance of some synthetic resins such as polypropylene are preferred, materials may be such as a metal is not particularly limited. 【0028】次に本発明の三方活栓の使用方法について説明する。 [0028] Next, a description will be given of a method use of the three-way stopcock of the present invention. 図8は本発明の三方活栓の連通状態を示した模式図である。 Figure 8 is a schematic view showing a communicating state of the three-way stopcock of the present invention. 例えば、医療用具の製造時には高圧蒸気滅菌を行うことが多いが、この滅菌方法の場合、通常は三方活栓の全ての流路が開通した状態で滅菌し、全ての流路が開通した状態で出荷されるのが通常である。 For example, although in the production of medical devices is often performed autoclaved, in this sterilization method, usually sterilized in a state in which all of the flow path of the three-way stopcock was opened, shipped all of the flow path is opened it is usually being. 【0029】このように全ての流路が開通した状態(図8a参照)で腹膜透析装置に組み込んで本発明の三方活栓を使用するときは、まず、レバーを45度回転させ、 [0029] When using a three-way stopcock of the present invention incorporates in a state such that all of the flow path is opened (see FIG. 8a) to the peritoneal dialysis apparatus, first rotates the lever 45 degrees,
全ての流路を閉じてから使用する(図8b参照)。 Used to close all the flow paths (see FIG. 8b). 【0030】次に患者の体内と接続されたチューブを分岐管14bに、腹膜透析液排出側のチューブを分岐管1 The next branch pipe 14b connected to the tube and the body of the patient, the branch pipe 1 a peritoneal dialysis fluid discharge side tube
4aに、腹膜透析液注入側のチューブを分岐管14cにそれぞれ接続し、レバーをさらに同じ方向へ45度回転させると、患者側排出側のチューブが開通するので、腹腔内に貯留された薬液を排出できる(図8c参照)。 To 4a, the peritoneal dialysis solution injection side tube is connected to a branch pipe 14c, is rotated 45 ° further to the same direction of the lever, since the opening of the patient-side discharge-side tube, the chemical liquid stored in the peritoneal cavity It can be discharged (see Figure 8c). 排出が終了したら、また同じ方向へ45度回転させると全ての流路が閉じる(図8d参照)。 After discharge is completed, and all is rotated 45 degrees in the same direction the flow path is closed (see FIG. 8d). 【0031】次に薬液を注入する前に、注入側のチューブ内にある空気を除去するため、さらにレバーを45度回転させる(図8e参照)。 [0031] Then before injecting the drug solution, to remove the air in the injection side of the tube, to further rotate the lever 45 degrees (see FIG. 8e). このとき、流路は注入側と排出側が開通しており、チューブ内の空気は排出側に移動する。 At this time, the channel is opened the discharge side and the injection side, the air in the tube is moved to the discharge side. チューブ内の空気が除去されたら、さらにレバーを45度回転させ、一旦全ての流路を閉じて薬液の注入準備を行う(図8f参照)。 When the air in the tube is removed, further rotate the lever 45 degrees, perform injection preparation of drug solution once close all of the channel (see Fig. 8f). 【0032】そして、さらにレバーを45度回転させると、注入側と患者側の流路が開通し、薬液を注入することができる(図8g参照)。 [0032] Then, when the further rotation of the lever 45 degrees, the flow path of the injection side and the patient side is opened, it is possible to inject the liquid (see Fig. 8 g). 薬液の注入が終了したら、 After the injection of the chemical liquid is completed,
さらにレバーを45度回転させ、全ての流路を閉じてから、患者側のチューブと患者の体内とを接続しているチューブとの接続部を外して一連の作業が終了する(図8 Further rotating the lever 45 degrees, close all the flow path and disconnect the connecting portion of the tube which connects a body of a patient and the patient tube series of operations are completed (FIG. 8
h参照)。 See h). このように、三方活栓に設けられたレバーを一定の方向へ45度ずつ回転させて一回転するだけで従来のクランプと同様の流路の切替が可能となる。 Thus, it is possible to switch the same flow path as the conventional clamp with only one rotation by a lever provided on the three-way stopcock is rotated by 45 degrees in the predetermined direction. 【0033】(実施例)次に図とともに本発明の三方活栓の実施例について説明する。 [0033] with (Example) Next FIG for the embodiment of the three-way stopcock of the present invention will be described. 図7に示される三方活栓21は、円筒部15を有する本体12と、この円筒部1 Three-way stopcock 21 shown in FIG. 7, a main body 12 having a cylindrical portion 15, the cylindrical portion 1
5に設けられた3つの分岐管14a、14b、14cを有しており、ポリプロピレンで作製し、この本体12の内部に回動自在に嵌合する胴部16を有するコック17 5 provided three branch pipes 14a, 14b, has a 14c, fabricated of polypropylene, cock 17 having a body portion 16 which fits rotatably within the main body 12
をポリプロピレンで作製した。 It was produced in polypropylene. 【0034】胴部16の内部には3つの分岐管14a、 [0034] The inside of the trunk portion 16 three branch pipes 14a,
14b、14cに対応できるよう流路20a、20b、 14b, so that it can correspond to 14c flow path 20a, 20b,
20cが設けられている。 20c is provided. この流路20a、20b、2 The flow path 20a, 20b, 2
0cが合流する部位は、図7に示されるように胴部16 Site 0c merge the barrel 16 as shown in FIG. 7
の円周に沿った円弧形状を有する流路211となるよう作製した。 Were prepared so that a flow path 211 having a circular arc shape along the circumference of the. 【0035】コック17の上部にレバー17を設け、流路20bと同じ方向を指し示すよう設置した。 [0035] The lever 17 provided above the cock 17 was installed to point the same direction as the flow path 20b. 円筒部1 The cylindrical portion 1
5には凹部が45度間隔で8ヶ所に設けられ、胴部16 5 recesses provided in eight positions at 45 degree intervals in the torso 16
には逆転を防止する凸部を180度間隔で2ヵ所に設けた。 It provided a convex portion for preventing the reverse rotation in two places at intervals of 180 degrees in the. 胴部16に設けられた凸部は、回転方向に向かって漸減する鋸刃形状を有している。 Protrusion provided on the body portion 16 has a saw blade shape gradually decreases toward the direction of rotation. 凹部の形状は凸部受け入れられる大きさで、凸部の鋸刃形状に対応した形状とした。 The shape of the recess is sized to be received protrusion and a shape corresponding to the saw blade shape of the convex portion. 【0036】ここで、円筒部15の外径を50mm、高さ20mmとし、内径流路が合流する円弧形状の流路2 [0036] Here, the outer diameter of the cylindrical portion 15 50 mm, height 20 mm, the flow of arc-shaped inner diameter channel is the combined channel 2
11の直径を40mmに設定し、流路20a、20b、 Set the 11 diameter of the 40mm, the flow path 20a, 20b,
20cの直径を4mmとした。 And 20c diameter of a 4mm. さらに円筒部15にカバー22を設け、このカバー22上に「準備」「排液」 Furthermore the cover 22 is provided in the cylindrical portion 15, "Preparation" "drainage" on the cover 22
「停止」「充填」「停止」「注液」「終了」の順番で時計まわりに文字を分岐管14bがある位置から45度間隔の位置上にそれぞれ付与した。 "Stop", "fill", "stop", "pouring" the letter clockwise in the order of "end" was applied respectively on the position of the position from the 45 degree interval a branch pipe 14b. 【0037】こうして作製した三方活栓21は、一端に患者の体内と接続されたチューブの他端を分岐管14b [0037] Thus three-way stopcock 21 was fabricated, the other end of the tube connected to the body of the patient at one branch pipe 14b
に接続し、一端に腹膜透析液のバッグと接続されたチューブの他端を分岐管14cに接続し、一端に腹膜透析液を回収する排出バッグと接続されたチューブの他端を分岐管14aにそれぞれ接続して腹膜透析装置内に組込んだ。 Connected to the other end of the tube connected to the bag of peritoneal dialysis solution to one end connected to the branch pipe 14c, the other end of the tube that is connected to the drain bag to collect the peritoneal dialysate branch pipe 14a on one end incorporated into the peritoneal dialysis apparatus are connected, respectively. 【0038】このようにして本発明の三方活栓21を有する腹膜透析装置を三方活栓21に取り付けられているカバー22に付された文字に従って、順次レーバー17 [0038] According to this way, characters attached to a cover 22 attached to the peritoneal dialysis apparatus in a three-way stopcock 21 having a three-way stopcock 21 of the present invention, sequentially Laver 17
を回転させて使用したところ、レバー17は逆転せず、 Rotate it was using, the lever 17 is not reversed,
さらに位置決めについても良好なクリック感を示し、停止させたい位置に停止させることがで、腹膜透析液の排液、充填、注液を問題なく行うことができた。 Further show good clicking feeling for positioning, De be stopped at a position desired to be stopped, drainage peritoneal dialysate, filling, could be carried out without pouring problems. また、三方活栓21には、操作手順となる文字が付されているので、戸惑うことなく使用することができた。 Further, the three-way stopcock 21, since the character to be the operation procedure is attached, could be used without confusion. さらに、不溶物によって流路が詰まることはなかった。 Furthermore, did not flow channel is clogged by insolubles. 【0039】 【発明の効果】本発明の三方活栓を腹膜透析等の回路に用いることにより、腹膜透析時の複雑な操作を不要にし、安全で簡単かつ確実に操作することが可能となる。 [0039] By using a three-way stopcock of the present invention, according to the present invention the circuit such as peritoneal dialysis, eliminating the need for complex operations during peritoneal dialysis, it is possible to operate safe, easy and reliable.

【図面の簡単な説明】 【図1】本発明の三方活栓の斜視図である。 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a three-way stopcock of the present invention. 【図2】本発明の三方活栓の上面透視図である。 2 is a top perspective view of a three-way stopcock of the present invention. 【図3】本発明の三方活栓の分解斜視図である。 3 is an exploded perspective view of a three-way stopcock of the present invention. 【図4】本発明の三方活栓の側面図である。 4 is a side view of a three-way stopcock of the present invention. 【図5】図4のA−A´線の断面図である。 5 is a cross-sectional view of the A-A'line in FIG. 【図6】図2のB−B´線の断面図である。 6 is a sectional view of B-B'line in FIG. 【図7】本発明の三方活栓にカバーを装着したときの上面図である。 7 is a top view when mounting the cover to the three-way stopcock of the present invention. 【図8】本発明の三方活栓の操作手順の模式図である。 8 is a schematic diagram of a procedure for operating the three-way stopcock of the present invention. 【符号の説明】 1 三方活栓2 本体3 コック4 分岐管5 円筒部6 胴部7 レバー8 凹部9 凸部10 流路11 円弧形状の流路12 蓋体14a 分岐管14b 分岐管14c 分岐管15 円筒部16 胴部17 レバー18 凹部19 凸部20a 流路20b 流路20c 流路21 三方活栓211 円弧形状の流路22 カバー [EXPLANATION OF SYMBOLS] 1 stopcock 2 body 3 cocks 4 branch pipe 5 cylinder 6 barrel 7 lever 8 recess 9 flow path 12 lid 14a of the projecting portion 10 the passage 11 arcuate branch pipe 14b branch pipe 14c branch pipe 15 cylindrical portion 16 body portion 17 lever 18 recess 19 flow channel 22 covers the protrusion 20a passage 20b flow path 20c passage 21 three-way stopcock 211 arc

Claims (1)

  1. 【特許請求の範囲】 【請求項1】 円筒部の外周に分岐管を有する本体と、 A body having a branch pipe to the outer periphery of the Claims 1 Cylindrical section,
    前記円筒部内に回動自在に嵌合し、前記分岐管に対応する流路が形成された胴部を有するコックとで構成された三方活栓であって、前記コックは一方向のみ回転することを特徴とする三方活栓。 Fitted rotatably into the cylindrical portion, a three-way stopcock, which is composed of a cock having a branch pipe barrel flow paths are formed corresponding to, said cock is rotated in only one direction three-way stopcock to be characterized. 【請求項2】 前記胴部の外周には凸部が設けられ、前記円筒部の内周には凹部が設けられ、前記凸部は回転方向に向かって漸減する鋸刃形状を有することを特徴とする請求項1記載の三方活栓。 Wherein are projections provided on the outer periphery of the barrel, the inner in the circumferential recess of the cylindrical portion is provided, wherein the convex portion is characterized by having a saw blade shape that gradually decreases in the rotational direction three-way stopcock of claim 1 wherein. 【請求項3】 前記円筒部の内周には凸部が設けられ、 Wherein protrusions are provided on the inner periphery of the cylindrical portion,
    前記胴部の外周には凹部が設けられ、前記凸部は回転方向に向かって漸減する鋸刃形状を有することを特徴とする請求項1記載の三方活栓。 The recess is provided on the outer periphery of the body portion, the convex portion is the three-way stopcock according to claim 1, characterized by having a saw blade shape that gradually decreases toward the direction of rotation. 【請求項4】 前記流路の合流する前記胴部の内部は円周に沿った円弧形状を有することを特徴とする請求項1 Claims the interior of said barrel portion merging of claim 4 wherein said flow path, characterized in that it has an arc shape along the circumference 1
    から3記載の三方活栓。 Three-way stopcock of 3, wherein from. 【請求項5】 前記本体と前記コックには一回転防止するための回転止めを設けたことを特徴とする請求項1から4記載の三方活栓。 5. A three-way stopcock 4 according to claims 1, characterized in that a rotation stopper for preventing one rotation in the body and the cock.
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