JP5101242B2 - Liquid port sealing structure for medical device and medical device having sealing structure - Google Patents

Liquid port sealing structure for medical device and medical device having sealing structure Download PDF

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JP5101242B2
JP5101242B2 JP2007278316A JP2007278316A JP5101242B2 JP 5101242 B2 JP5101242 B2 JP 5101242B2 JP 2007278316 A JP2007278316 A JP 2007278316A JP 2007278316 A JP2007278316 A JP 2007278316A JP 5101242 B2 JP5101242 B2 JP 5101242B2
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liquid port
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substantially cylindrical
sealing structure
medical device
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JP2009107627A (en
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健 谷川
修一 齋藤
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Kawasumi Laboratories Inc
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Description

本発明は、栓体、液体ポート及び医療用具用液体ポートの封止構造及びこれらの封止構造を有する医療用具（例えば、人工腎臓、血漿分離器、白血球除去器、血液成分吸着材等）に関する。   The present invention relates to a sealing structure of a plug, a liquid port, and a liquid port for a medical device, and a medical device (for example, an artificial kidney, a plasma separator, a leukocyte remover, a blood component adsorbing material, etc.) having these sealing structures. .

内部に水や水溶液等の液体が充填された医療用具、例えば、人工腎臓、血漿分離器、白血球除去器、血液成分吸着材等は、体液の循環や水、水溶液等の通液のための一個以上の液体ポートを有する。これらの液体ポートには、滅菌時や輸送時に、内部液体が漏出するのを防止する等の目的で栓体が被冠されている。   Medical devices filled with liquids such as water and aqueous solutions, such as artificial kidneys, plasma separators, leukocyte removers, blood component adsorbents, etc., are used for circulating body fluids and passing water, aqueous solutions, etc. It has the above liquid ports. These liquid ports are covered with plugs for the purpose of preventing leakage of internal liquid during sterilization or transportation.

例えば特許文献１に記載の栓体は、円形の保持部２と、その下面中央部から突設した外周に円形のリブ４を有するとともに、底面に開設された凹陥部５を有する装着部３とを一体成形している。これらの形状・構造により、内圧が上昇したときに凹陥部５が外側に向けて押圧され、液体ポートの内周面にしっかりと圧着することにより、不用意に脱栓することを防いでいる。   For example, the plug body described in Patent Document 1 includes a circular holding portion 2, a mounting portion 3 having a circular rib 4 on the outer periphery protruding from the central portion of the lower surface thereof, and a recessed portion 5 opened on the bottom surface. Is integrally molded. With these shapes and structures, when the internal pressure rises, the recessed portion 5 is pressed toward the outside and is firmly pressed against the inner peripheral surface of the liquid port, thereby preventing inadvertent unplugging.

しかしながら液体ポートの大部分は外部に露出した状態となっており、特に打栓あるいは抜栓時において、手指の接触などによる汚染が発生する懸念がある。さらに、いずれも、密封機能と保栓機能とは共に摩擦係合によって維持されており、打栓時の摩擦抵抗が大きいため、栓体を打栓する作業は容易ではない。
またこのような栓体を持つ封止構造では、設計値よりも高い内圧が生じた場合に、栓抜けによる密封破壊が生じるのを完全に防止するのは困難であり、輸送中などに充填液体が漏出するような虞れがある。 However, most of the liquid ports are exposed to the outside, and there is a concern that contamination will occur due to finger contact, etc., particularly when the stopper is plugged or unplugged. Furthermore, in both cases, the sealing function and the plug retaining function are both maintained by frictional engagement, and the frictional resistance during plugging is large, so that the operation of plugging the plug is not easy.
In addition, in such a sealing structure having a plug, it is difficult to completely prevent a seal breakage due to plug removal when an internal pressure higher than the design value occurs. May leak out.

また特許文献２には、液体ポートの外周面に突起部２６ａ、２６ｂ、栓体の内側に溝部３６ａ、３６ｂを形成し、ねじ込みによりできるようにした医療用具用液体ポートの封止構造が記載されているが、栓体３０をポートの上側部から締め付ける点、栓体３０をポートから容易に取り外す構造については、まだ改良の余地がある。
特許文献２の発明は、特許文献１の発明の課題（汚染の発生、栓抜け等）を解決した優れた発明であるが、栓体３０の侵入部３８など、内部構造が複雑で組み立て自動機に適用しにくい、またねじ込み式であるため、ねじ込む加減が難しく、ねじ込みすぎてしまうと栓体を外しにくくなる等の難点がある。 Patent Document 2 describes a sealing structure for a liquid port for a medical device in which protrusions 26a and 26b are formed on the outer peripheral surface of the liquid port and grooves 36a and 36b are formed on the inner side of the plug so that they can be screwed. However, there is still room for improvement in terms of tightening the plug 30 from the upper side of the port and a structure for easily removing the plug 30 from the port.
The invention of Patent Document 2 is an excellent invention that has solved the problems of the invention of Patent Document 1 (occurrence of contamination, plug omission, etc.). Since it is difficult to apply to the screw, and it is a screw-in type, it is difficult to adjust the screw, and if it is screwed too much, it is difficult to remove the plug.

本発明は、上記のような栓体を備えた医療用具用液体ポートの封止構造に生じている上述した不都合を解消することを目的としており、装着（打栓）及び取り外し（抜栓）が容易であり、装着（打栓）及び取り外し（抜栓）などに液体ポートに直接接触する可能性を極力低減できる。さらに、滅菌時や輸送時などにおいて容器内圧が上昇したときに、栓抜け等により内部液体が漏出するのを完全に防止することのできる栓体、液体ポート及び医療用具用液体ポートの封止構造並びに封止構造を持つ医療用具を提供することを目的とする。   An object of the present invention is to eliminate the inconveniences described above in the sealing structure of a liquid port for medical devices provided with a plug body as described above, and easy mounting (plugging) and removal (plugging). Therefore, the possibility of direct contact with the liquid port during mounting (plugging) and removal (plugging) can be reduced as much as possible. Furthermore, when the internal pressure of the container rises during sterilization or transportation, the sealing structure of the plug, liquid port, and medical device liquid port that can completely prevent the internal liquid from leaking out due to plug removal etc. An object of the present invention is to provide a medical device having a sealing structure.

特開平７−２７５３５６号公報JP-A-7-275356 特開２００２−１７２１６１号公報JP 2002-172161 A

解決しようとする問題点は、手指の接触などによる汚染の発生、栓抜けによる密封破壊が生じる懸念、さらに螺合構造の栓体において、ねじ込みすぎてしまうと栓体を外しにくくなる難点があることである。   Problems to be solved include the occurrence of contamination due to finger contact, the risk of seal breakage due to plug removal, and the difficulty of removing the plug body if it is screwed in too much. It is.

[１] 本発明は、栓体（１）と液体ポート（１１）とを有し、
前記栓体（１）は、筒状体（２）とシール部材（１０）とを有し、
当該筒状体（２）は、上部に天板（７）を有し、下部に基部（６）を有し、当該基部（６）は、内周を下部方向に向けて広がるテーパ状に形成し、内周の下部にネジ溝（４）を形成し、
当該ネジ溝（４）は、下部端部に凸部（３）を形成し、前記天板（７）は、略中央に孔（７ａ）を形成し、
前記シール部材（１０）は、略円筒状の本体（１０ｈ）を有し、
当該本体（１０ｈ）は上部にくさび状の凸部（１０ａ）を突設し、
当該本体（１０ｈ）は下部に脚状の凸部（１０ｂ）を突設し、
前記シール部材（１０）の本体（１０ｈ）は、前記天板（７）の下部の略筒状体（２）の上部空間に、実質的に隙間無く装填し、
前記天板（７）の略中央に形成された孔（７ａ）から、前記シール部材（１０）のくさび状の凸部（１０ａ）を突出させて配置し、
前記液体ポート（１１）は、略円筒状の基部（１２）と略円筒壁（１６）とを有し、
前記略円筒状の基部（１２）の上部と前記略円筒壁（１６）の下部との間に、略環状溝部（１６ｂ）を形成し、
前記略円筒壁（１６）の上部に略円筒小径部（１６ａ）を形成し、当該略円筒小径部（１６ａ）は、上部に上部開口部（１８）を形成し、
前記基部（１２）の外周にネジ山（１４）を形成し、
当該ネジ山（１４）の下部に凸部（１３）を形成し、
前記基部（１２）の下部でかつ側部外周に、ストッパ（１２ａ、１２ｂ、１２ｃ）を形成し、
当該ストッパ（１２ａ、１２ｂ、１２ｃ）の側部方向の大きさは、前記基部（１２）の径よりも側部方向にはみ出るように大きく形成するか、または前記基部（１２）の径と実質的に同じ大きさに形成し、
前記栓体（１）を前記ポート（１１）に螺合し、前記栓体（１）を前記液体ポート（１１）に被冠したとき、
前記シール部材（１０）の脚状の凸部（１０ｂ）は、当該凸部（１０ｂ）が、前記液体ポート（１１）の略円筒小径部（１６ａ）の天面を圧着し、
前記凸部（１０ｂ）が前記略円筒小径部（１６ａ）の上部開口部（１８）内に液密に挿入されることで、前記液体ポート（１１）内の液体が外部に漏れ出すのを防止する医療用具用液体ポートの封止構造を提供する。
[２] 本発明は、前記凸部（３）は、少なくとも２個以上形成し、かつ、夫々の間隔が略等間隔となるように配置した[１]に記載の医療用具用液体ポートの封止構造を提供する。
[３] 本発明は、前記筒状体（２）の外周にリブ（５）を形成した、[１]または[２]に記載の医療用具用液体ポートの封止構造を提供する。
[４] 本発明は、前記凸部（１３）は、少なくとも２個以上形成し、かつ、夫々の間隔が略等間隔となるように配置した[１]から[３]のいずれか１つに記載の医療用具用液体ポートの封止構造を提供する。
[５] 本発明は、[１]から[３]のいずれか１つに記載の医療用具用液体ポートの封止構造を有する医療用具を提供する。







[1] The present invention has a plug (1) and a liquid port (11),
The plug (1) has a cylindrical body (2) and a seal member (10),
The cylindrical body (2) has a top plate (7) in the upper part and a base part (6) in the lower part, and the base part (6) is formed in a taper shape that widens the inner circumference in the lower direction. And forming a thread groove (4) in the lower part of the inner periphery,
The screw groove (4) forms a convex part (3) at the lower end part, and the top plate (7) forms a hole (7a) in the approximate center,
The seal member (10) has a substantially cylindrical main body (10h),
The main body (10h) is provided with a wedge-shaped convex portion (10a) at the top,
The main body (10h) is provided with a leg-shaped convex part (10b) at the bottom,
The main body (10h) of the sealing member (10) is loaded in the upper space of the substantially cylindrical body (2) below the top plate (7) with substantially no gap,
From the hole (7a) formed in the approximate center of the top plate (7), the wedge-shaped convex part (10a) of the seal member (10) is arranged to protrude,
The liquid port (11) has a substantially cylindrical base (12) and a substantially cylindrical wall (16),
A substantially annular groove (16b) is formed between the upper part of the substantially cylindrical base (12) and the lower part of the substantially cylindrical wall (16),
A substantially cylindrical small diameter part (16a) is formed on the upper part of the substantially cylindrical wall (16), and the substantially cylindrical small diameter part (16a) forms an upper opening (18) on the upper part,
Forming a thread (14) on the outer periphery of the base (12);
A convex part (13) is formed at the lower part of the thread (14),
A stopper (12a, 12b, 12c) is formed on the lower part of the base (12) and on the outer periphery of the side part,
The size of the stoppers (12a, 12b, 12c) in the side direction is formed larger than the diameter of the base (12) so as to protrude in the side direction, or substantially equal to the diameter of the base (12). To the same size,
When the stopper (1) is screwed into the port (11) and the stopper (1) is crowned on the liquid port (11),
The leg-shaped convex part (10b) of the sealing member (10) is such that the convex part (10b) crimps the top surface of the substantially cylindrical small diameter part (16a) of the liquid port (11),
The convex portion (10b) is liquid-tightly inserted into the upper opening (18) of the substantially cylindrical small diameter portion (16a), thereby preventing the liquid in the liquid port (11) from leaking to the outside. Provided is a liquid port sealing structure for a medical device .
[2] The present invention provides the liquid port for a medical device according to [1], wherein at least two convex portions (3) are formed and arranged so that the intervals are substantially equal. Provide stop structure .
[3] The present invention provides the sealing structure for a liquid port for a medical device according to [1] or [2], wherein a rib (5) is formed on the outer periphery of the cylindrical body (2).
[ 4 ] In the present invention , any one of [1] to [3] , wherein at least two convex portions (13) are formed and arranged so that the intervals are substantially equal. A liquid port sealing structure for a medical device as described is provided.
[ 5 ] The present invention provides a medical device having the liquid port sealing structure for a medical device according to any one of [1] to [3] .







（１）栓体１を液体ポート１１を螺合させるとき、栓体１内周の凸部３が液体ポート１１外周の凸部１３を、基部１２下部方向に乗り越えて固定されるので、栓体１はポート１１に緩むことなく確実に固定される。
（２）液体ポート１１の基部１２下端外周に形成したストッパ１２ａにより、栓体１の過剰なねじ込みを防止できる。
（３）筒状体２の基部６内周（ネジ溝４を形成）を、当該基部６の下部方向に向けて広がるテーパ状に形成することで、栓体１を液体ポート１１に螺合するときに、螺合するにしたがって栓体１のネジ溝４に、液体ポート１１のネジ山１４が徐々にきつく締まっていくので、栓体１を液体ポート１１をより確実に密封することができる。 (1) When the plug body 1 is screwed into the liquid port 11, the convex portion 3 on the inner periphery of the plug body 1 is fixed over the convex portion 13 on the outer periphery of the liquid port 11 in the lower direction of the base 12. 1 is securely fixed to the port 11 without loosening.
(2) Excessive screwing of the plug 1 can be prevented by the stopper 12a formed on the outer periphery of the lower end of the base 12 of the liquid port 11.
(3) By forming the inner circumference of the base portion 6 (forming the thread groove 4) of the cylindrical body 2 in a tapered shape that extends toward the lower portion of the base portion 6, the plug body 1 is screwed into the liquid port 11. In some cases, the thread 14 of the liquid port 11 is gradually tightened into the screw groove 4 of the plug body 1 as it is screwed, so that the liquid port 11 can be sealed more reliably.

図１は本発明の栓体１の概略図（一部切欠図）、図２は本発明の液体ポート１１の概略図、図３は図２の液体ポート１１のストッパ１２ａのその他の実施例を示す概略図、図４は、本発明の医療用具用液体ポートの封止構造（栓体１を液体ポート１１に螺合したところ）の概略図、図５は図４の部分拡大図、図６は、図４の天面図である。
［栓体１］
栓体１は、図１に例示するように、天板７を有する筒状体２からなり、当該筒状体２の基部６内周にネジ溝４を形成している。
ネジ溝４は、筒状体２の縦方向に沿って略垂直状に形成するかまたは筒状体２の基部６の下部方向に向けて広がるテーパ状に形成している。
天板７にシール部材１０を装着している。
筒状体２の基部６の下部内周に凸部３を形成している。凸部３は、少なくとも２個以上形成し、かつ、夫々の間隔が略等間隔となるように配置している。
筒状体２の外周にリブ５を形成している。 1 is a schematic view (partially cutaway view) of a plug body 1 of the present invention, FIG. 2 is a schematic view of a liquid port 11 of the present invention, and FIG. 3 is another embodiment of a stopper 12a of the liquid port 11 of FIG. FIG. 4 is a schematic view of a sealing structure for a liquid port for a medical device according to the present invention (when the plug 1 is screwed to the liquid port 11), FIG. 5 is a partially enlarged view of FIG. These are the top views of FIG.
[Plug 1]
As illustrated in FIG. 1, the plug body 1 includes a cylindrical body 2 having a top plate 7, and a thread groove 4 is formed on the inner periphery of the base portion 6 of the cylindrical body 2.
The thread groove 4 is formed in a substantially vertical shape along the longitudinal direction of the cylindrical body 2 or is formed in a tapered shape that extends toward the lower portion of the base portion 6 of the cylindrical body 2.
A sealing member 10 is attached to the top plate 7.
A convex portion 3 is formed on the inner periphery of the lower portion of the base portion 6 of the cylindrical body 2. At least two convex portions 3 are formed, and are arranged so that their intervals are substantially equal.
Ribs 5 are formed on the outer periphery of the cylindrical body 2.

［液体ポート１１］
液体ポート１１は、例えば図２に例示するように、略円筒状の基部１２の上部に、略環状の溝部１６ｂを介して略円筒壁１６を形成している。さらに略円筒壁１６の先端部に略円筒小径部１６ａを形成している。
基部１２の外周にネジ山１４を形成し、ネジ山１４の下部に凸部１３を形成している。さらに基部１２の下端外周に、ストッパ１２ａを形成している。
凸部１３は、少なくとも２個以上形成し、かつ、夫々の間隔が略等間隔となるように配置している。 [Liquid port 11]
For example, as illustrated in FIG. 2, the liquid port 11 has a substantially cylindrical wall 16 formed on the upper portion of a substantially cylindrical base 12 via a substantially annular groove 16 b. Further, a substantially cylindrical small diameter portion 16 a is formed at the tip of the substantially cylindrical wall 16.
A screw thread 14 is formed on the outer periphery of the base 12, and a protrusion 13 is formed on the lower part of the screw thread 14. Further, a stopper 12 a is formed on the outer periphery of the lower end of the base portion 12.
At least two convex portions 13 are formed, and are arranged so that their intervals are substantially equal.

［凸部３、凸部１３］
栓体１の凸部３と液体ポート１１の凸部１３について、さらに詳述する。
夫々の凸部３と凸部１３の作用は、栓体１を液体ポート１１に螺合するときに、栓体１の凸部３が、液体ポート１１の凸部１３を基部１２下部方向に乗り越えて固定されることで、栓体１が容易に緩まないための「緩み防止作用」である。
そのため、凸部３と凸部１３の「高さ」があまり「低い」場合、仮に凸部３が凸部１３を基部１２下部方向乗り越えて一時的に固定されても、外的衝撃等で栓体１が開栓する方向の力が作用すると、凸部３が凸部１３を略環状溝部１６ｂ方向に、容易に乗り越えて緩んでしまい、「緩み防止作用」を有する「ストッパ」として作用しなくなるので好ましくない。
また、逆にあまり「高い」と、凸部３が凸部１３を基部１２下部方向に乗り越えられず、栓体１をポート１１に螺合しかつ液密に密栓することが困難となる。したがって、凸部３は０．２ｍｍ〜０．６ｍｍ、凸部１３の高さは、１．０ｍｍ〜５．０ｍｍ程度に形成するのが好ましい。
また、凸部３と凸部１３の「大きさ（面積）」についても、前記の場合と同様に、あまり「大きい（広い）」と凸部３が凸部１３を基部１２下部方向に乗り越えるのが困難となり、逆にあまり「小さい（狭い）」と「緩み防止作用」が低下するので好ましくない。
したがって、凸部３が凸部１３を基部１２下部方向に乗り越えられ、かつ「緩み防止作用」として機能する「大きさ（面積）」（例えば縦２〜４ｍｍ×横１〜２ｍｍ等）に形成するのが好ましい。
なお、凸部３及び凸部１３の形状は、図面では略矩形に記載されているが、「緩み防止作用」を保つことができる形状であれば略円形等の他、何でも良い。 [Convex part 3, convex part 13]
The convex portion 3 of the stopper 1 and the convex portion 13 of the liquid port 11 will be described in further detail.
The operation of each of the protrusions 3 and 13 is such that when the stopper 1 is screwed into the liquid port 11, the protrusion 3 of the stopper 1 gets over the protrusion 13 of the liquid port 11 in the lower direction of the base 12. This is a “loosening prevention effect” for preventing the plug body 1 from being easily loosened.
Therefore, when the “height” of the convex portion 3 and the convex portion 13 is too “low”, even if the convex portion 3 passes over the convex portion 13 in the lower direction of the base 12 and is temporarily fixed, it is plugged by an external impact or the like. When a force in the direction in which the body 1 is opened acts, the convex portion 3 easily gets over the convex portion 13 in the direction of the annular groove 16b and loosens, and does not act as a “stopper” having a “loosening prevention effect”. Therefore, it is not preferable.
On the other hand, if the height is too high, the convex portion 3 cannot get over the convex portion 13 in the lower direction of the base portion 12, and it is difficult to screw the plug body 1 into the port 11 and seal it liquid-tightly. Therefore, it is preferable to form the convex part 3 to 0.2 mm to 0.6 mm and the height of the convex part 13 to about 1.0 mm to 5.0 mm.
Also, regarding the “size (area)” of the convex portions 3 and 13, as in the case described above, if the “large (wide)” is too large, the convex portion 3 gets over the convex portion 13 in the lower direction of the base 12. On the contrary, it is not preferable because “small (narrow)” and “loosening prevention effect” are lowered.
Accordingly, the convex portion 3 is formed to have a “size (area)” (for example, 2 to 4 mm in length × 1 to 2 mm in width, etc.) that can overcome the convex portion 13 in the lower direction of the base 12 and functions as a “loosening prevention function” Is preferred.
In addition, although the shape of the convex part 3 and the convex part 13 is described in the substantially rectangular shape in the drawing, it may be anything other than a substantially circular shape as long as it can maintain the “loosening prevention function”.

［ストッパ１２ａ（１２ｂ、１２ｃ）］
ストッパ１２ａについて詳述する。例えば図２に例示するように、液体ポート１１の基部１２の下端外周に、略鍔状に形成されている。
さらに、例えば図６に示すように、ストッパ１２ａは、栓体１の基部６下部の径よりもはみ出るように大きく形成するか、または図示しないが当該径と実質的に同じ径に形成する。ストッパ１２ａは、栓体１の基部６下部周縁が当接することで、栓体１がポート１１に、それ以上過度にねじ込まれることを防止する。すなわち、「ねじ込み防止作用」を有する。
ストッパ１２ａの形状としては、図２及び図６に例示するものに限定されず、例えば、他にも図３（Ａ）のように基部１２の周囲を覆う形状のストッパ１２ｂ［ストッパ１２ａは、略鍔状で、その下部に隙間があるが、ストッパ１２ｂは、その下部に隙間がない］や、あるいは不連続の形状として、例えば図３（Ｂ）に例示するような基部１２の複数箇所に凸部を突設した形状のストッパ１２ｃなども採用できる。
要するに、液体ポート１１の基部１２に配置することができ、かつ栓体１の「ねじ込み防止作用」（ねじ込みすぎるのを食い止められるもの）を有するものであれば、これらの形状に限定されることなく、どのような形でも採用することができる。 [Stopper 12a (12b, 12c)]
The stopper 12a will be described in detail. For example, as illustrated in FIG. 2, the liquid port 11 is formed in a substantially bowl shape on the outer periphery of the lower end of the base portion 12.
Further, for example, as shown in FIG. 6, the stopper 12 a is formed to be larger than the diameter of the lower portion of the base portion 6 of the plug 1, or is formed to have substantially the same diameter as that not shown. The stopper 12a prevents the plug body 1 from being excessively screwed into the port 11 by contacting the lower peripheral edge of the base section 6 of the plug body 1. That is, it has a “screw-in prevention effect”.
The shape of the stopper 12a is not limited to those illustrated in FIG. 2 and FIG. 6. For example, a stopper 12b having a shape covering the periphery of the base 12 as shown in FIG. It is bowl-shaped and has a gap at the bottom, but the stopper 12b has no gap at the bottom.] Or as a discontinuous shape, it protrudes at a plurality of locations on the base 12 as exemplified in FIG. 3B, for example. It is also possible to employ a stopper 12c having a shape with a protruding portion.
In short, any shape can be used as long as it can be disposed at the base portion 12 of the liquid port 11 and has the “screw-in prevention function” of the plug body 1 (that can prevent the screw body from being over-screwed). Any form can be adopted.

［ネジ溝４、ネジ山１４］
栓体１のネジ溝４と液体ポート１１のネジ山１４について詳述する。
栓体１のネジ溝４は、図１に例示するように、筒状体２の基部６内周に形成している。筒状体２の基部６内周（ネジ溝４の形成箇所）は、筒状体２の縦方向に沿って略垂直状に形成するかまたは筒状体２の基部６の下部方向に向けて広がるテーパ状に形成している。
栓体１のネジ溝４に対応する液体ポート１１のネジ山１４は、図２に例示するように基部１２の外周に形成している。
筒状体２の基部６内周（ネジ溝４の形成箇所）を前記のようにテーパ形状に形成することで、栓体１を液体ポート１１に螺合するときに、螺合するにしたがってネジ溝４とネジ山１４が徐々にきつく締まっていくので、栓体１と液体ポート１１をより確実に密封することができる。
［シール部材１０］
シール部材１０は、図１に例示するように、栓体１の天板７に装着される。シール部材１０は、略円筒状の本体１０ｈの上部にくさび状の凸部１０ａを突設し、本体１０ｈの下部に脚状の凸部１０ｂを突設している。
本体１０ｈを天板７の下部（略筒状体２の上部空間）に、実質的に隙間無く装填し、天板７の略中央に形成された孔７ａから、くさび状の凸部１０ａを突出させて配置している。このくさび状の凸部１０ａは、栓体１を液体ポート１１からはずすときに、シール部材１０が栓体１からずれたりあるいは外れたりするのを防止する。
また複数の脚状の凸部１０ｂは、栓体１を液体ポート１１に被冠したとき、これらの凸部１０ｂ外周の壁面（凹部）が、液体ポート１１の略円筒小径部１６ａの天面を圧着し、これらの凸部１０ｂが上部開口部１８内に液密に挿入（嵌入、圧入）されることで、液体ポート１１内の液体が外部に漏れ出すのを防止する。
シール部材１０は、液密性を維持できる材質（弾性体：例えばシリコーンやエラストマー）から形成される。
［外周リブ５］
栓体１の基部６外周には、図１、図６に例示するように、栓体１を打栓及び／または抜栓するときの指の滑り止めとして、縦方向に延びた外周リブ５が複数箇所（図６では６箇所）に形成されている。
この指の滑り止めとしては、図１、図６に例示した形状の外周リブ５に限らず、他にも例えば外周面を六角形や八角形といった多角形に形成したり、外周面をエンボス加工にしたり（ともに図示せず）してもよい。要するに、栓体１が掴みやすく、より操作しやすくなるようなものであれば、どのようなものでも採用することができる。 [Thread groove 4, thread 14]
The thread groove 4 of the plug 1 and the thread 14 of the liquid port 11 will be described in detail.
As illustrated in FIG. 1, the screw groove 4 of the plug 1 is formed on the inner periphery of the base 6 of the cylindrical body 2. The inner periphery of the base portion 6 of the cylindrical body 2 (where the screw groove 4 is formed) is formed substantially vertically along the longitudinal direction of the cylindrical body 2 or toward the lower portion of the base portion 6 of the cylindrical body 2. It is formed in a widening taper shape.
The thread 14 of the liquid port 11 corresponding to the screw groove 4 of the plug 1 is formed on the outer periphery of the base 12 as illustrated in FIG.
By forming the inner periphery of the base portion 6 (where the thread groove 4 is formed) of the cylindrical body 2 in a tapered shape as described above, when the plug body 1 is screwed into the liquid port 11, the screw is screwed as it is screwed. Since the groove 4 and the screw thread 14 are gradually tightened, the plug body 1 and the liquid port 11 can be more reliably sealed.
[Seal member 10]
As illustrated in FIG. 1, the seal member 10 is attached to the top plate 7 of the plug body 1. The seal member 10 has a wedge-shaped convex portion 10a projecting from an upper portion of a substantially cylindrical main body 10h, and a leg-shaped convex portion 10b projecting from a lower portion of the main body 10h.
The main body 10h is loaded in the lower part of the top plate 7 (substantially the upper space of the cylindrical body 2) with substantially no gap, and the wedge-shaped convex part 10a protrudes from the hole 7a formed in the approximate center of the top board 7. It is arranged. The wedge-shaped convex portion 10 a prevents the sealing member 10 from being displaced from or detached from the plug body 1 when the plug body 1 is removed from the liquid port 11.
The plurality of leg-shaped convex portions 10 b have a wall surface (concave portion) on the outer periphery of the convex portion 10 b when the stopper 1 is covered with the liquid port 11, and the top surface of the substantially cylindrical small diameter portion 16 a of the liquid port 11. The protrusions 10b are pressure-bonded and inserted into the upper opening 18 in a liquid-tight manner (insertion or press-fitting), thereby preventing the liquid in the liquid port 11 from leaking to the outside.
The seal member 10 is formed of a material (elastic body: for example, silicone or elastomer) that can maintain liquid tightness.
[Outer peripheral rib 5]
As shown in FIG. 1 and FIG. 6, a plurality of outer peripheral ribs 5 extending in the vertical direction are provided on the outer periphery of the base portion 6 of the plug body 1 as a finger slip stopper when the plug body 1 is plugged and / or unplugged. It is formed at a place (six places in FIG. 6).
The anti-slip of the finger is not limited to the outer peripheral rib 5 having the shape illustrated in FIG. 1 and FIG. 6, but for example, the outer peripheral surface may be formed into a polygon such as a hexagon or an octagon, or the outer peripheral surface may be embossed. (Both not shown). In short, any plug can be used as long as the plug 1 can be easily grasped and operated more easily.

栓体１を液体ポート１１に装着する方法の一例について説明する。
（１）図４のように、栓体１を液体ポート１１に被冠させ、栓体１を回転させて、栓体１のネジ溝４を、液体ポート１１のネジ山１４に螺合する。
（２）栓体１の凸部３とポート１１の凸部１３が突き当たったところで、（１）の螺合方向と同方向（栓体１を締める方向）にさらに少し強く回転させて、凸部３が凸部１３を基部１２下部方向に乗り越えるようにして固定する。
その際に、ストッパ１２ａに栓体１の筒状体２の基部６の下部周縁が当接するので、さらにネジ締めをしようとしても、ストッパ１２ａによってそれ以上栓体１がねじ込まれることはない。
すなわち、ストッパ１２ａにより、栓体１の過剰な締めつけや、過剰な締めつけによりポートの使用時（抜栓時）に栓体１が外しにくいといった使い勝手の不便さ、また締めつけすぎ（ねじ込みすぎ）によるネジ山の破壊などの不都合（不良）が解消される。 An example of a method for attaching the plug 1 to the liquid port 11 will be described.
(1) As shown in FIG. 4, the plug body 1 is covered with the liquid port 11, the plug body 1 is rotated, and the screw groove 4 of the plug body 1 is screwed into the thread 14 of the liquid port 11.
(2) When the convex portion 3 of the plug body 1 and the convex portion 13 of the port 11 abut, the convex portion is further rotated slightly in the same direction as the screwing direction of (1) (direction in which the plug body 1 is tightened). 3 fixes the convex part 13 so that it may get over the base 12 lower direction.
At that time, since the lower peripheral edge of the base portion 6 of the tubular body 2 of the plug body 1 contacts the stopper 12a, the plug body 1 is not further screwed by the stopper 12a even if further screw tightening is attempted.
In other words, the stopper 12a makes it difficult to remove the plug body 1 when the plug body 1 is excessively tightened or excessively tightened and the port 1 is difficult to remove when the port is used (when plugging), and the screw thread due to excessive tightening (too much screwing). Inconveniences (defects) such as the destruction of the product are eliminated.

本発明の栓体１の概略図（部分切欠部）Schematic of the plug 1 of the present invention (partially cutout) 本発明の液体ポート１１の概略図Schematic of the liquid port 11 of the present invention （Ａ）（Ｂ）本発明の液体ポート１１のリブ１２のその他の一例の概略図(A) (B) Schematic of another example of the rib 12 of the liquid port 11 of the present invention 本発明の医療用具用液体ポートの封止構造（栓体１を液体ポート１１に羅合したところ）の概略図Schematic of a sealing structure for a liquid port for a medical device of the present invention (when the stopper 1 is combined with a liquid port 11) 図４の部分拡大図Partial enlarged view of FIG. 図４の天面図Top view of Fig. 4

符号の説明Explanation of symbols

１ 栓体
２ 筒状体
３ （栓体の）凸部
４ ネジ溝
５ 外周リブ
６ 基部
７ 天板
７ａ （天板の）孔
８ 開口部
１０ シール部材
１０ｈ （シール部材の）本体
１０ａ （シール部材の）くさび状の凸部
１０ｂ （シール部材の）脚状の凸部
１１ 液体ポート
１２ 基部
１２ａ、１２ｂ、１２ｃ ストッパ
１３ （ポートの）凸部
１４ ネジ山
１６ 略円筒壁
１６ａ 略円筒小径部
１６ｂ 略環状溝部
１８ 上部開口部
２０ 医療用具 DESCRIPTION OF SYMBOLS 1 Plug body 2 Cylindrical body 3 Convex part (plug body) 4 Thread groove 5 Outer peripheral rib 6 Base part 7 Top plate 7a (Top plate) Hole 8 Opening 10 Seal member 10h (Seal member) Main body 10a (Seal member) Wedge-shaped convex part 10b Leg-shaped convex part 11 (of sealing member) Liquid port 12 Base parts 12a, 12b, 12c Stopper 13 (Port) convex part 14 Thread 16 Substantially cylindrical wall 16a Substantially cylindrical small-diameter part 16b Annular groove 18 Upper opening 20 Medical device

Claims (5)

栓体（１）と液体ポート（１１）とを有し、Having a plug (1) and a liquid port (11);
前記栓体（１）は、筒状体（２）とシール部材（１０）とを有し、The plug (1) has a cylindrical body (2) and a seal member (10),
当該筒状体（２）は、上部に天板（７）を有し、下部に基部（６）を有し、当該基部（６）は、内周を下部方向に向けて広がるテーパ状に形成し、内周の下部にネジ溝（４）を形成し、The cylindrical body (2) has a top plate (7) in the upper part and a base part (6) in the lower part, and the base part (6) is formed in a taper shape that widens the inner circumference in the lower direction. And forming a thread groove (4) in the lower part of the inner periphery,
当該ネジ溝（４）は、下部端部に凸部（３）を形成し、前記天板（７）は、略中央に孔（７ａ）を形成し、The screw groove (4) forms a convex part (3) at the lower end part, and the top plate (7) forms a hole (7a) in the approximate center,
前記シール部材（１０）は、略円筒状の本体（１０ｈ）を有し、The seal member (10) has a substantially cylindrical main body (10h),
当該本体（１０ｈ）は上部にくさび状の凸部（１０ａ）を突設し、The main body (10h) is provided with a wedge-shaped convex portion (10a) at the top,
当該本体（１０ｈ）は下部に脚状の凸部（１０ｂ）を突設し、The main body (10h) is provided with a leg-shaped convex part (10b) at the bottom,
前記シール部材（１０）の本体（１０ｈ）は、前記天板（７）の下部の略筒状体（２）の上部空間に、実質的に隙間無く装填し、The main body (10h) of the sealing member (10) is loaded in the upper space of the substantially cylindrical body (2) below the top plate (7) with substantially no gap,
前記天板（７）の略中央に形成された孔（７ａ）から、前記シール部材（１０）のくさび状の凸部（１０ａ）を突出させて配置し、From the hole (7a) formed in the approximate center of the top plate (7), the wedge-shaped convex part (10a) of the seal member (10) is arranged to protrude,
前記液体ポート（１１）は、略円筒状の基部（１２）と略円筒壁（１６）とを有し、The liquid port (11) has a substantially cylindrical base (12) and a substantially cylindrical wall (16),
前記略円筒状の基部（１２）の上部と前記略円筒壁（１６）の下部との間に、略環状溝部（１６ｂ）を形成し、A substantially annular groove (16b) is formed between the upper part of the substantially cylindrical base (12) and the lower part of the substantially cylindrical wall (16),
前記略円筒壁（１６）の上部に略円筒小径部（１６ａ）を形成し、当該略円筒小径部（１６ａ）は、上部に上部開口部（１８）を形成し、A substantially cylindrical small diameter part (16a) is formed on the upper part of the substantially cylindrical wall (16), and the substantially cylindrical small diameter part (16a) forms an upper opening (18) on the upper part,
前記基部（１２）の外周にネジ山（１４）を形成し、Forming a thread (14) on the outer periphery of the base (12);
当該ネジ山（１４）の下部に凸部（１３）を形成し、A convex part (13) is formed at the lower part of the thread (14),
前記基部（１２）の下部でかつ側部外周に、ストッパ（１２ａ、１２ｂ、１２ｃ）を形成し、A stopper (12a, 12b, 12c) is formed on the lower part of the base (12) and on the outer periphery of the side part,
当該ストッパ（１２ａ、１２ｂ、１２ｃ）の側部方向の大きさは、前記基部（１２）の径よりも側部方向にはみ出るように大きく形成するか、または前記基部（１２）の径と実質的に同じ大きさに形成し、The size of the stoppers (12a, 12b, 12c) in the side direction is formed larger than the diameter of the base (12) so as to protrude in the side direction, or substantially equal to the diameter of the base (12). To the same size,
前記栓体（１）を前記ポート（１１）に螺合し、前記栓体（１）を前記液体ポート（１１）に被冠したとき、When the stopper (1) is screwed into the port (11) and the stopper (1) is crowned on the liquid port (11),
前記シール部材（１０）の脚状の凸部（１０ｂ）は、当該凸部（１０ｂ）が、前記液体ポート（１１）の略円筒小径部（１６ａ）の天面を圧着し、The leg-shaped convex part (10b) of the sealing member (10) is such that the convex part (10b) crimps the top surface of the substantially cylindrical small diameter part (16a) of the liquid port (11),
前記凸部（１０ｂ）が前記略円筒小径部（１６ａ）の上部開口部（１８）内に液密に挿入されることで、前記液体ポート（１１）内の液体が外部に漏れ出すのを防止する、ことを特徴とする医療用具用液体ポートの封止構造。The convex portion (10b) is liquid-tightly inserted into the upper opening (18) of the substantially cylindrical small diameter portion (16a), thereby preventing the liquid in the liquid port (11) from leaking to the outside. A sealing structure for a liquid port for a medical device. 前記凸部（３）は、少なくとも２個以上形成し、かつ、夫々の間隔が略等間隔となるように配置したことを特徴とする請求項１に記載の医療用具用液体ポートの封止構造。 The sealing structure for a liquid port for a medical device according to claim 1, wherein at least two protrusions (3) are formed, and the protrusions (3) are arranged so that the intervals are substantially equal. . 前記筒状体（２）の外周にリブ（５）を形成した、請求項１または請求項２に記載の医療用具用液体ポートの封止構造。 The sealing structure of the liquid port for medical devices according to claim 1 or 2, wherein a rib (5) is formed on an outer periphery of the cylindrical body (2) . 前記凸部（１３）は、少なくとも２個以上形成し、かつ、夫々の間隔が略等間隔となるように配置したことを特徴とする請求項１から請求項３のいずれか１項に記載の医療用具用液体ポートの封止構造。 The said convex part (13) forms at least 2 or more, and has arrange | positioned so that each space | interval may become a substantially equal space | interval, The any one of Claims 1-3 characterized by the above-mentioned. Sealing structure of liquid port for medical device. 請求項１から請求項４のいずれか１項に記載の医療用具用液体ポートの封止構造を有する医療用具。 The medical device which has the sealing structure of the liquid port for medical devices of any one of Claims 1-4 .
JP2007278316A 2007-10-26 2007-10-26 Liquid port sealing structure for medical device and medical device having sealing structure Active JP5101242B2 (en)

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