JP3108995U - Mouth member and medical container including the same - Google Patents

Mouth member and medical container including the same Download PDF

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JP3108995U
JP3108995U JP2004006942U JP2004006942U JP3108995U JP 3108995 U JP3108995 U JP 3108995U JP 2004006942 U JP2004006942 U JP 2004006942U JP 2004006942 U JP2004006942 U JP 2004006942U JP 3108995 U JP3108995 U JP 3108995U
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core
mouth member
medical container
mantle
convex
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孝之 傳寶
剣 小松
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Otsuka Pharmaceutical Co Ltd
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Abstract

【課題】外套部の先端を軸線に向かって湾曲させた場合に、芯部と外套部とが剥離するのを防止することのできる口部材と、それを備える医療用容器を提供すること。
【解決手段】外套部12は、芯部の外周面11aに接合される第1筒部12と、芯部11との接合箇所から、弾性封止体15によって封鎖される芯部の開口端11bに向かう方向xにおいて、開口端11bよりもさらに下流D側へ延びる第2筒部13とを一体的に備えている。また、芯部11の第1筒部12との接合面に、径方向yに突出する凸部16を有しており、第1筒部12の芯部11との接合面に、凸部16を受け入れる凹部17を有している。
【選択図】図1
To provide a mouth member capable of preventing separation of a core portion and a mantle portion when the tip of the mantle portion is bent toward an axis, and a medical container including the mouth member.
An outer cover 12 includes a first tube part 12 joined to an outer peripheral surface 11a of a core part, and an opening end 11b of the core part sealed by an elastic sealing body 15 from a joint part of the core part 11. In the direction x toward the bottom, the second cylindrical portion 13 that extends further downstream D than the opening end 11b is integrally provided. Moreover, the convex part 16 which protrudes in radial direction y is provided in the joint surface with the 1st cylinder part 12 of the core part 11, and the convex part 16 is provided in the joint surface with the core part 11 of the 1st cylinder part 12. FIG. Has a recess 17 for receiving the.
[Selection] Figure 1

Description

本考案は、容器の口部に配置されて前記口部を封鎖する口部材と、それを備える医療用容器とに関する。   The present invention relates to a mouth member that is disposed at a mouth portion of a container and seals the mouth portion, and a medical container including the mouth member.

従来、輸液バッグ、輸液ボトルなどの医療用容器の口部材としては、例えば、先端にフランジ82を有する熱可塑性プラスチック製の筒状部材81と、ゴムまたは熱可塑性エラストマー製の弾性封止体84を外枠体85および内枠体86で挟み込んでなるキャップ83とからなり、このキャップ83を筒状部材81のフランジ82に熱溶着してなるものが知られている(図12参照)。   Conventionally, as a mouth member of a medical container such as an infusion bag or an infusion bottle, for example, a cylindrical member 81 made of a thermoplastic having a flange 82 at the tip and an elastic sealing body 84 made of rubber or a thermoplastic elastomer are used. There is known a cap 83 that is sandwiched between an outer frame body 85 and an inner frame body 86, and this cap 83 is thermally welded to a flange 82 of a cylindrical member 81 (see FIG. 12).

この口部材80によれば、あらかじめ、筒状部材81を医療用容器本体としての袋体87に取り付けておき、この筒状部材81を介して、袋体87内に輸液、薬液などを注入した後、筒状部材81のフランジ82に上記キャップ83を取り付けることによって、医療用容器を密封することができる。しかしながら、例えば、フランジ82のキャップ83との接合面に輸液、埃などが付着していると、キャップ83の熱溶着性が低下するという不具合がある。   According to the mouth member 80, the tubular member 81 is previously attached to the bag body 87 as the medical container body, and an infusion solution, a chemical solution, or the like is injected into the bag body 87 through the tubular member 81. Thereafter, the medical container can be sealed by attaching the cap 83 to the flange 82 of the cylindrical member 81. However, for example, when infusion, dust, or the like adheres to the joint surface of the flange 82 with the cap 83, there is a problem in that the heat weldability of the cap 83 decreases.

一方、図12に示す構造の口部材に代わるものとして、特許文献1には、袋体94の口部に熱溶着される略筒状の芯部91と、芯部91の外側に層状形成された略筒状の外套部92と、芯部91の一方の開口を封鎖するゴム栓93とを備える口部材90が記載されている(図13参照)。
この口部材90によれば、外套部92の先端92aを軸線に向かって湾曲させることによって、ゴム栓93を、外套部の先端92aと、芯部の開口端91aや芯部91に設けられた突起91bとの間で固定することができ、また、こうした、外套部92内にゴム栓93を配置し、固定する処理は、芯部91を介して、袋体94内に輸液、薬液などを注入した後において、することができる。しかも、口部材90に輸液などが付着したとしても、ゴム栓93を固定する処理に、なんら影響が及ぶものでない。
On the other hand, as an alternative to the mouth member having the structure shown in FIG. 12, in Patent Document 1, a substantially cylindrical core portion 91 that is heat-welded to the mouth portion of the bag body 94 and a layer formed on the outside of the core portion 91 are formed. In addition, a mouth member 90 including a substantially cylindrical mantle portion 92 and a rubber plug 93 that seals one opening of the core portion 91 is described (see FIG. 13).
According to this mouth member 90, the rubber plug 93 is provided at the distal end 92 a of the outer sheath portion and the open end 91 a of the core portion or the core portion 91 by curving the distal end 92 a of the outer sheath portion 92 toward the axis. The process of placing and fixing the rubber plug 93 in the outer sheath 92 and fixing the same can be performed between the protrusion 91 b and the infusion solution, the drug solution, and the like in the bag body 94 via the core 91. Can be done after injection. Moreover, even if an infusion or the like adheres to the mouth member 90, there is no influence on the process of fixing the rubber stopper 93.

さらに、図13に示す口部材90は、芯部91と外套部92とを多色成形やインサート成形によって一体化できることから、大量生産が可能である。また、芯部91の形成材料は、芯部91が医療用容器に収容される輸液、薬液などと直接に接触することや、医療用容器本体(袋体94など)と溶着させるものであることから、ポリオレフィン系樹脂などに限定され、その結果、芯部91の強度や剛性が不十分になる場合があるのに対し、外套部92の形成材料には、硬度や剛性の大きい熱可塑性プラスチックや、着色された熱可塑性プラスチックを用いることができ、それゆえ、中空針の貫通を防止したり、口部材90の用途に応じて外套部92を色分けしたりすることができる。
特許第3004139号公報
Further, the mouth member 90 shown in FIG. 13 can be mass-produced because the core portion 91 and the mantle portion 92 can be integrated by multicolor molding or insert molding. In addition, the core 91 is made of a material for which the core 91 is in direct contact with an infusion solution, a chemical solution, or the like housed in a medical container, or is welded to a medical container body (such as a bag 94). Therefore, the core portion 91 may have insufficient strength and rigidity as a result, whereas the material of the outer cover portion 92 may be made of a thermoplastic or high-hardness or rigid material. Colored thermoplastics can be used, and therefore the penetration of the hollow needle can be prevented, or the outer cover 92 can be color-coded according to the use of the mouth member 90.
Japanese Patent No. 3004139

しかしながら、図13に示す口部材90の製造工程において、外套部の先端92aを軸線に向かって湾曲させる際には、外套部92に負荷がかかって、芯部91と外套部92とが剥離するという不具合を生じるおそれがある。
とりわけ、口部材90の概観を、図12に示す口部材80の概観に似せた場合には、芯部91と外套部92との接合面が狭くなることから、両者の剥離が生じ易くなる。また、外套部92の形成材料として、硬度や剛性の大きな材料を使用した場合にも、芯部91の形成材料との相溶性、溶着性が低くなって、両者の剥離が生じ易くなる。
However, in the manufacturing process of the mouth member 90 shown in FIG. 13, when the distal end 92a of the mantle portion is bent toward the axis, a load is applied to the mantle portion 92, and the core portion 91 and the mantle portion 92 are peeled off. There is a risk of causing the problem.
In particular, when the appearance of the mouth member 90 is similar to the appearance of the mouth member 80 shown in FIG. 12, the joint surface between the core portion 91 and the mantle portion 92 becomes narrow, and the two members are easily peeled off. In addition, even when a material having high hardness or rigidity is used as the material for forming the mantle portion 92, the compatibility with the material for forming the core portion 91 and the weldability are low, and the two are easily peeled off.

そこで、本考案の目的は、略筒状の芯部およびその外周面に一体形成された略筒状の外套部と、上記芯部の開口を封鎖する弾性封止体とを備える口部材であって、上記外套部の先端を軸線に向かって湾曲させた場合に、上記芯部と上記外套部とが剥離するのを防止することのできる口部材と、それを備える医療用容器を提供することである。   Accordingly, an object of the present invention is a mouth member that includes a substantially cylindrical core part, a substantially cylindrical mantle part integrally formed on the outer peripheral surface thereof, and an elastic sealing body that seals the opening of the core part. Thus, it is possible to provide a mouth member capable of preventing the core portion and the mantle portion from peeling off when the tip of the mantle portion is bent toward the axis, and a medical container including the mouth member. It is.

上記目的を達成するために、本考案は、
(1) 熱可塑性プラスチックからなる略円筒状の芯部と、熱可塑性プラスチックからなる略円筒状の外套部と、前記芯部の一方の開口を封鎖する、ゴムまたは熱可塑性エラストマーからなる略円盤状の弾性封止体と、備える口部材であって、前記外套部は、前記芯部の外周面に接合される第1筒部と、前記芯部との接合箇所から、前記弾性封止体によって封鎖される前記芯部の開口端に向かう方向において、前記開口端よりもさらに下流側へ延びる第2筒部とを一体的に備えており、前記第2筒部が、その前記下流側端縁が前記外套部の軸線に向かって湾曲することにより前記弾性封止体の前記下流側端面を繋ぎ止めるものであり、かつ、前記芯部の前記第1筒部との接合面および前記第1筒部の前記芯部との接合面のいずれか一方に、前記芯部および第1筒部の径方向に突出する凸部を有しており、他方に、前記凸部を受け入れる凹部を有していることを特徴とする、口部材、
(2) 前記凹部が、前記芯部および前記第1筒部の軸線方向に互いに間隔をおいて対向配置される一対の挿入面と、各前記挿入面における前記径方向外側端縁を連結する当接面とを有するものであることを特徴とする、前記(1)に記載の口部材、
(3) 前記外套部が、前記第1筒部において、径方向外側に延びるフランジを有していることを特徴とする、前記(1)または(2)に記載の口部材、
(4) 前記一対の凸部および凹部が、前記芯部の外周面または前記第1筒部の内周面に沿って、連続して形成されていることを特徴とする、前記(1)〜(3)のいずれかに記載の口部材、
(5) 前記一対の凸部および凹部を2つ以上有していることを特徴とする、前記(1)〜(4)のいずれかに記載の口部材、
(6) 前記凸部が、前記芯部の前記第1筒部との接合面に配置され、かつ、前記凹部が、前記第1筒部の前記芯部との接合面に配置されていることを特徴とする、前記(1)〜(5)のいずれかに記載の口部材、
(7) 前記芯部と前記外套部とが、多色成形またはインサート成形によって一体化されたものであることを特徴とする、前記(1)〜(6)のいずれかに記載の口部材、
(8) 熱可塑性プラスチックで形成される医療用容器本体と、前記(1)〜(7)のいずれかに記載の口部材と、を備えていることを特徴とする、医療用容器、
(9) 前記医療用容器本体の内表面と、前記芯部の外周面とが、熱溶着によって固定されていることを特徴とする、前記(8)に記載の医療用容器、
(10) 前記医療用容器本体が、可撓性を有する袋体であることを特徴とする、前記(8)または(9)に記載の医療用容器、
(11) 前記医療用容器本体が、ボトルであることを特徴とする、前記(8)または(9)に記載の医療用容器、
を提供するものである。
In order to achieve the above object, the present invention
(1) A substantially cylindrical core portion made of thermoplastic plastic, a substantially cylindrical mantle portion made of thermoplastic plastic, and a substantially disk shape made of rubber or thermoplastic elastomer that seals one opening of the core portion. A sealing member and a mouth member provided, wherein the mantle portion is formed by the elastic sealing member from a joint portion between the core portion and the first cylindrical portion joined to the outer peripheral surface of the core portion. In the direction toward the opening end of the core portion to be sealed, the first cylindrical portion is integrally provided with a second cylindrical portion extending further downstream than the opening end, and the second cylindrical portion has the downstream edge. Is connected to the downstream end face of the elastic sealing body by being curved toward the axis of the mantle part, and the joint surface of the core part with the first cylinder part and the first cylinder Any one of the joint surfaces of the part with the core part, A mouth member characterized by having a convex part protruding in the radial direction of the core part and the first cylindrical part, and having a concave part for receiving the convex part on the other side,
(2) The concave portion connects a pair of insertion surfaces disposed opposite to each other in the axial direction of the core portion and the first cylindrical portion, and the radially outer edge of each insertion surface. The mouth member according to (1), characterized in that it has a contact surface,
(3) The mouth member according to (1) or (2), wherein the mantle portion has a flange extending radially outward in the first tube portion,
(4) The pair of convex portions and concave portions are continuously formed along the outer peripheral surface of the core portion or the inner peripheral surface of the first tube portion, (1) to (1) to The mouth member according to any one of (3),
(5) The mouth member according to any one of (1) to (4), wherein the mouth member has two or more of the pair of convex portions and concave portions,
(6) The said convex part is arrange | positioned at the joint surface with the said 1st cylinder part of the said core part, and the said recessed part is arrange | positioned at the joint surface with the said core part of the said 1st cylinder part. The mouth member according to any one of (1) to (5), characterized in that
(7) The mouth member according to any one of (1) to (6), wherein the core portion and the mantle portion are integrated by multicolor molding or insert molding,
(8) A medical container comprising a medical container body formed of a thermoplastic and the mouth member according to any one of (1) to (7),
(9) The medical container according to (8), wherein an inner surface of the medical container main body and an outer peripheral surface of the core part are fixed by thermal welding,
(10) The medical container according to (8) or (9), wherein the medical container body is a flexible bag,
(11) The medical container according to (8) or (9), wherein the medical container body is a bottle,
Is to provide.

本考案によれば、口部材を形成する芯部および外套部の接合面に、一対の凸部および凹部が形成されており、この一対の凸部および凹部が互いに咬み合っていることから、上記接合面の表面積が大きくなっている。それゆえ、たとえ、外套部の先端を軸線に向かって湾曲させる処理を施したとしても、外套部と芯部との剥離を防止することができる。   According to the present invention, a pair of convex portions and concave portions are formed on the joint surfaces of the core portion and the outer sheath portion that form the mouth member, and the pair of convex portions and concave portions are engaged with each other. The surface area of the joint surface is large. Therefore, even if a treatment for bending the tip of the mantle portion toward the axis is performed, it is possible to prevent the mantle portion and the core portion from peeling off.

本考案の実施の形態を、添付図面を参照しつつ説明する。
図1は、本考案の口部材の一実施形態を示す片側断面図であって、図2は、図1に示す口部材10のうち、芯部11と外套部12の第1筒部13との接合面を拡大して示す断面図である。また、図3(a)および(b)は、図1に示す口部材10のうち、芯部11のみを示す図である。
Embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a half sectional view showing an embodiment of the mouth member of the present invention. FIG. 2 is a perspective view of the mouth member 10 shown in FIG. It is sectional drawing which expands and shows the joint surface of these. FIGS. 3A and 3B are views showing only the core portion 11 of the mouth member 10 shown in FIG.

口部材10は、略円筒状の芯部11、略円筒状の外套部12、および、芯部11の一方の開口を封鎖する略円盤状の弾性封止体15を備えている。
芯部11および外套部12は、いずれも熱可塑性プラスチックからなるものであって、両者は、二色成形またはインサート成形によって一体化することができる。芯部11および外套部12の一体成形物は、これに限定されるものではないが、まず、芯部11を射出成形した後で、外套部12をインサート成形によって射出成形することが好ましい。
The mouth member 10 includes a substantially cylindrical core portion 11, a substantially cylindrical mantle portion 12, and a substantially disk-shaped elastic sealing body 15 that seals one opening of the core portion 11.
The core part 11 and the mantle part 12 are both made of thermoplastics, and both can be integrated by two-color molding or insert molding. The integrally molded product of the core portion 11 and the mantle portion 12 is not limited to this, but it is preferable to first injection-mold the mantle portion 12 by insert molding after the core portion 11 is injection-molded.

芯部11の形成材料と、外套部12の形成材料とは、同一であってもよく、異なっていてもよい。芯部11および外套部12の形成材料としては、例えば、種々の熱可塑性プラスチックが挙げられる。
口部材10を医療用容器の口部材として用いる場合には、芯部11が、医療用容器に収容される輸液や薬液と直接に接触され、かつ、医療用容器本体と熱融着される部位となることから、芯部11の形成材料は、例えば、ポリエチレン、ポリプロピレン、ポリ4−メチルペンテン(三井化学(株)の商品名「TPX」など)、ポリテトラフルオロエチレンなどのポリオレフィン系樹脂などに限定される。また、この場合、芯部11は、比較的柔らかく、剛性が小さいものとなることから、例えば、弾性封止体15に中空針を刺し通す方向が、芯部11の軸線方向からずれることによって、中空針が芯部11を貫通する事態を招くおそれがある。しかし、外套部12は、その形成材料について、芯部11のような制限を受けないことから、例えば、硬度や剛性の大きい材料を外套部12の形成材料として用いることによって、誤って中空針を口部材10の筒内から外部へと貫通させるという事態がはっせいすることを防止できる。
The forming material of the core part 11 and the forming material of the mantle part 12 may be the same or different. Examples of the material for forming the core part 11 and the mantle part 12 include various thermoplastics.
When the mouth member 10 is used as a mouth member of a medical container, the core portion 11 is in direct contact with an infusion solution or a chemical solution contained in the medical container and is thermally fused to the medical container body. Therefore, the material for forming the core 11 is, for example, polyethylene, polypropylene, poly-4-methylpentene (trade name “TPX”, etc., Mitsui Chemicals, Inc.), polyolefin-based resins such as polytetrafluoroethylene, and the like. Limited. In this case, since the core 11 is relatively soft and has a small rigidity, for example, the direction in which the hollow needle is inserted into the elastic sealing body 15 is deviated from the axial direction of the core 11, There is a possibility that the hollow needle penetrates the core 11. However, since the outer sheath 12 is not limited by the material of the core 11 as to the forming material, for example, by using a material having high hardness or rigidity as the forming material of the outer shell 12, the hollow needle is mistakenly used. It is possible to prevent the situation in which the mouth member 10 is penetrated from the inside of the cylinder to the outside.

弾性封止体15としては、種々のゴムや熱可塑性エラストマーを用いることができる。口部材10を医療用容器の口部材として用いる場合において、弾性封止体の形成材料としては、例えば、医療器具用に許容されたゴムや熱可塑性エラストマーが挙げられる。上記ゴムとしては、例えば、天然ゴム、シリコーンゴム、ブチルゴム、イソプレンゴム、スチレン−ブタジエンゴムなどが挙げられる。また、上記熱可塑性エラストマーとしては、例えば、スチレン系熱可塑性エラストマー、オレフィン系熱可塑性エラストマー、ポリウレタン系熱可塑性エラストマーなどが挙げられる。   As the elastic sealing body 15, various rubbers and thermoplastic elastomers can be used. In the case where the mouth member 10 is used as the mouth member of a medical container, examples of the material for forming the elastic sealing body include rubber and thermoplastic elastomer permitted for medical devices. Examples of the rubber include natural rubber, silicone rubber, butyl rubber, isoprene rubber, and styrene-butadiene rubber. Examples of the thermoplastic elastomer include styrene-based thermoplastic elastomers, olefin-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, and the like.

図1に示す口部材10において、外套部12は、芯部11の外周面11aに接合される第1筒部13と、第1筒部13と芯部11との接合箇所から、弾性封止体15によって封鎖される芯部11の開口端11bに向かう方向xにおいて、開口端11bよりもさらに下流側Dへ伸びる第2筒部14とを一体的に備えている。
外套部12の第2筒部14の下流D側端縁14aは、外套部12の軸線aに向かって湾曲しており、弾性封止体15の下流D側端面を口部材10内に繋ぎ止めている。また、弾性封止体15の上流U側端面は、芯部11の開口端11bと係わり合っている。すなわち、弾性封止体15は、第2筒部14の下流D側端縁14aと、芯部11の開口端11bとによって、口部材10内に固定されている。
In the mouth member 10 shown in FIG. 1, the mantle portion 12 is elastically sealed from the first tube portion 13 joined to the outer peripheral surface 11 a of the core portion 11 and the joint portion between the first tube portion 13 and the core portion 11. In the direction x toward the opening end 11b of the core portion 11 sealed by the body 15, a second cylindrical portion 14 that extends further downstream D than the opening end 11b is integrally provided.
The downstream D-side edge 14 a of the second cylindrical portion 14 of the outer jacket portion 12 is curved toward the axis “a” of the outer jacket portion 12, and the downstream D-side end surface of the elastic sealing body 15 is held in the mouth member 10. ing. Further, the upstream U-side end surface of the elastic sealing body 15 is engaged with the opening end 11 b of the core portion 11. That is, the elastic sealing body 15 is fixed in the mouth member 10 by the downstream D-side edge 14 a of the second cylindrical portion 14 and the opening end 11 b of the core portion 11.

図1に示す口部材10において、芯部11の第1筒部13との接合面には、芯部11の径方向y外側に向かって突出する凸部16が形成されており、かつ、第1筒部13の芯部11との接合面には、第1筒部13の径方向y外側に向かって陥没して、上記凸部16を受け入れる凹部17が形成されている。
凸部16は、芯部11の外周面に沿って、連続して形成された凸条である。また、凹部17は、第1筒部13の内周面に沿って、連続して形成された凹条であって、図2に拡大して示すように、第1筒部13の軸線a方向に互いに間隔をおいて対向配置される一対の挿入面17a,17bと、各挿入面17a,17bの径方向y外側端縁を連結する当接面17cを有している。
In the mouth member 10 shown in FIG. 1, a convex portion 16 that protrudes outward in the radial direction y of the core portion 11 is formed on the joint surface of the core portion 11 with the first tube portion 13, and the first A concave portion 17 that is recessed toward the outer side in the radial direction y of the first cylindrical portion 13 and receives the convex portion 16 is formed on the joint surface of the first cylindrical portion 13 with the core portion 11.
The convex part 16 is a convex line formed continuously along the outer peripheral surface of the core part 11. Moreover, the recessed part 17 is a continuous strip formed along the inner peripheral surface of the 1st cylinder part 13, Comprising: As FIG. 2 expands and shows, the axis line a direction of the 1st cylinder part 13 is shown. And a pair of insertion surfaces 17a and 17b that are opposed to each other with a space therebetween, and a contact surface 17c that connects the outer edges in the radial direction y of the insertion surfaces 17a and 17b.

一対の凸部16および凹部17は、芯部11と第1筒部13との接合面の表面積を増大させることから、例えば、第2筒部14の先端14aを軸線aに向かって湾曲させることにより、外套部12に負荷がかかった場合であっても、芯部11と外套部12とが剥離することを防止できる。
外套部12は、第1筒部13において、径方向y外側に延びるフランジ18を有している。これにより、一対の凸部16および凹部17を形成するスペースに余裕が生じることとなり、口部材10の径方向yにおける凸部16の長さや凹部17の深さを、それぞれ大きく設定することができる。
Since the pair of convex portions 16 and the concave portion 17 increase the surface area of the joint surface between the core portion 11 and the first cylindrical portion 13, for example, the distal end 14a of the second cylindrical portion 14 is curved toward the axis a. Thus, even when a load is applied to the mantle portion 12, the core portion 11 and the mantle portion 12 can be prevented from peeling off.
The outer jacket portion 12 has a flange 18 extending outward in the radial direction y in the first tube portion 13. As a result, a space is formed in the space for forming the pair of convex portions 16 and the concave portion 17, and the length of the convex portion 16 and the depth of the concave portion 17 in the radial direction y of the mouth member 10 can be set large. .

凹部17の径方向yにおける深さ(挿入面17a,17bの径方向y内側端縁から外側端縁までの長さ)は、これに限定されないが、例えば、0.5〜2mmであることが好ましい。また、凹部17の軸a方向における幅(当接面17cについての、一方の挿入面17aから他方の挿入面17bまでの軸a方向における長さ)は、これに限定されないが、例えば、0.5〜2mmであることが好ましい。   The depth in the radial direction y of the recess 17 (the length from the inner end edge to the outer end edge in the radial direction y of the insertion surfaces 17a and 17b) is not limited to this, but may be, for example, 0.5 to 2 mm. preferable. Further, the width of the recess 17 in the axis a direction (the length in the axis a direction from the one insertion surface 17a to the other insertion surface 17b with respect to the contact surface 17c) is not limited to this. It is preferably 5 to 2 mm.

図4〜図6は、芯部の設計変更例を示す図である。
図4に示す芯部110では、凸部として、芯部11の外周面に沿って、連続して形成された2本の凸条16a,16bを備えている。
図5に示す芯部111において、凸部161は、芯部11の外周面において、独立して3つ形成されている。この凸部161を受け入れる凹部(図示せず)は、凸部161に対応して、第1筒部の内周面において、独立して3つ形成されている。
4-6 is a figure which shows the example of a design change of a core part.
In the core part 110 shown in FIG. 4, the two convex strips 16a and 16b continuously formed along the outer peripheral surface of the core part 11 are provided as a convex part.
In the core part 111 shown in FIG. 5, three convex parts 161 are independently formed on the outer peripheral surface of the core part 11. Three concave portions (not shown) that receive the convex portions 161 are formed independently on the inner peripheral surface of the first cylindrical portion corresponding to the convex portions 161.

図6に示す芯部112において、凸部162は、芯部112の外周面に形成されたエンボス加工面における個々の凸部である。この場合、第1筒部の内周面においても、凸部162に対応し、互いに咬み合うエンボス加工面が形成される。
図7および図8は、本考案の医療用容器の一実施形態を示す正面図である。
本考案に係る口部材10は、例えば、熱可塑性プラスチック製のフィルムからなる可撓性を有する袋体(医療用容器本体)21における口部22に取り付けることによって、例えば、輸液バッグなどの可撓性を有する医療用容器20として用いられる。
In the core portion 112 shown in FIG. 6, the convex portions 162 are individual convex portions on the embossed surface formed on the outer peripheral surface of the core portion 112. In this case, also on the inner peripheral surface of the first cylinder portion, an embossed surface that corresponds to the convex portion 162 and bites each other is formed.
7 and 8 are front views showing an embodiment of the medical container of the present invention.
The mouth member 10 according to the present invention is attached to the mouth portion 22 of a flexible bag body (medical container main body) 21 made of a film made of a thermoplastic plastic, for example. It is used as a medical container 20 having properties.

また、口部材10は、例えば、熱可塑性プラスチック製のボトル(医療用容器本体)26における口部27に取り付けることによって、例えば、輸液ボトルなどの医療用容器25として用いられる。
医療用容器本体としての袋体21やボトル26を形成する熱可塑性プラスチックとしては、例えば、医療器具用に許容された熱可塑性プラスチックが挙げられ、より具体的には、例えば、ポリエチレン、ポリプロピレン、ポリ4−メチルペンテン(三井化学(株)の商品名「TPX」など)、ポリテトラフルオロエチレンなどのポリオレフィン;エチレン−テトラシクロドデセン共重合体(三井化学(株)の商品名「アペル」など)などのポリ環状オレフィン;ポリアセタール(POM);アクリロニトリル−ブタジエン−スチレン共重合体(ABS);ポリエチレンナフタレート(PEN)、ポリエチレンテレフタレート(PET)、ポリアリレートなどのポリエステル;ポリフェニレンサルファイド(PPS)などのベンゼン系重合体が挙げられる。
In addition, the mouth member 10 is used as a medical container 25 such as an infusion bottle, for example, by being attached to a mouth portion 27 of a thermoplastic plastic bottle (medical container body) 26, for example.
Examples of the thermoplastic plastic forming the bag body 21 and the bottle 26 as a medical container main body include thermoplastics allowed for medical instruments, and more specifically, for example, polyethylene, polypropylene, 4-methylpentene (trade name “TPX” of Mitsui Chemicals, Inc.), polyolefin such as polytetrafluoroethylene; ethylene-tetracyclododecene copolymer (trade name “Apel” of Mitsui Chemicals, etc.) Polycyclic olefins such as; polyacetal (POM); acrylonitrile-butadiene-styrene copolymer (ABS); polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyester such as polyarylate; benzene such as polyphenylene sulfide (PPS) Polymer It is below.

口部材10の筒部11を、袋体21の口部22や、ボトル26の口部27に取り付ける方法としては、熱溶着など、従来公知の方法を採用することができる。
筒部11の外周面11aのうち、医療用容器本体と熱溶着する部位に、例えば、周方向zに沿って延びる凸条19が形成されている場合には、口部材10と、医療用容器本体との剥離強度を向上させることができる。
As a method for attaching the cylindrical portion 11 of the mouth member 10 to the mouth portion 22 of the bag body 21 or the mouth portion 27 of the bottle 26, a conventionally known method such as thermal welding can be employed.
In the outer peripheral surface 11a of the cylinder part 11, when the protruding item | line 19 extended along the circumferential direction z is formed in the site | part thermally welded with the medical container main body, for example, the mouth member 10 and a medical container The peel strength from the main body can be improved.

なお、図10に示す口部材60は、本考案の比較例であって、図1に示す口部材10との対比より明らかなように、芯部61と、外套部62の第1筒部63と、において、一対の凸部および凹部を有していないことを特徴とする。この口部材は、芯部61と第1筒部63との接合面の表面積が小さいことから、例えば、第2筒部64の下流D側端縁64aを、その軸線aに向かって湾曲させた場合には、芯部61と外套部62とが剥離するという不具合を生じるおそれがある。   The mouth member 60 shown in FIG. 10 is a comparative example of the present invention, and as is clear from the comparison with the mouth member 10 shown in FIG. 1, the core portion 61 and the first tube portion 63 of the mantle portion 62. And a pair of convex portions and concave portions are not provided. Since this mouth member has a small surface area of the joint surface between the core portion 61 and the first cylindrical portion 63, for example, the downstream D side edge 64a of the second cylindrical portion 64 is curved toward the axis a. In such a case, there is a risk that the core portion 61 and the mantle portion 62 are peeled off.

図9は、本考案の口部材の他の実施形態を示す片側断面図である。
図9に示す口部材30は、略円筒状の芯部31、略円筒状の外套部32、および、芯部31の一方の開口を封鎖する略円盤状の弾性封止体15を備えている。
芯部31および外套部32は、いずれも熱可塑性プラスチックからなるものであって、図1に示す芯部11および外套部12の場合と同様に、二色成形またはインサート成形によって、両者を一体化することができる。
FIG. 9 is a half sectional view showing another embodiment of the mouth member of the present invention.
The mouth member 30 shown in FIG. 9 includes a substantially cylindrical core portion 31, a substantially cylindrical outer jacket portion 32, and a substantially disk-shaped elastic sealing body 15 that seals one opening of the core portion 31. .
The core portion 31 and the mantle portion 32 are both made of thermoplastic plastics, and as in the case of the core portion 11 and the mantle portion 12 shown in FIG. 1, they are integrated by two-color molding or insert molding. can do.

芯部31および外套部32の形成材料については、上述したのと同様のものが挙げられる。
弾性封止体15については、上述したのと同様である。
図9に示す口部材30において、外套部32は、芯部31の外周面31aに接合される第1筒部33と、第1筒部33と芯部31との接合箇所から、弾性封止体15によって封鎖される芯部31の開口端31bに向かう方向xにおいて、開口端31bよりもさらに下流側Dへ伸びる第2筒部34とを一体的に備えている。
About the forming material of the core part 31 and the mantle part 32, the same thing as mentioned above is mentioned.
The elastic sealing body 15 is the same as described above.
In the mouth member 30 shown in FIG. 9, the mantle portion 32 is elastically sealed from the first tube portion 33 joined to the outer peripheral surface 31 a of the core portion 31, and the joint portion between the first tube portion 33 and the core portion 31. In the direction x toward the opening end 31b of the core portion 31 sealed by the body 15, a second cylindrical portion 34 that extends further downstream D than the opening end 31b is integrally provided.

外套部32の第2筒部34の下流D側端縁34aは、外套部32の軸線aに向かって湾曲しており、弾性封止体15の下流D側端面を口部材30内に繋ぎ止めている。また、弾性封止体15の上流U側端面は、芯部31の開口端31bと係わり合っている。すなわち、弾性封止体15は、図1に示す口部材10と同様に、第2筒部34の下流D側端縁34aと、芯部31の開口端31bとによって、口部材30内に固定されている。   The downstream D-side edge 34 a of the second cylindrical portion 34 of the outer jacket portion 32 is curved toward the axis “a” of the outer jacket portion 32, and the downstream D-side end surface of the elastic sealing body 15 is held in the mouth member 30. ing. Further, the upstream U-side end surface of the elastic sealing body 15 is engaged with the opening end 31 b of the core portion 31. That is, the elastic sealing body 15 is fixed in the mouth member 30 by the downstream D-side edge 34a of the second cylindrical portion 34 and the opening end 31b of the core portion 31 in the same manner as the mouth member 10 shown in FIG. Has been.

図9に示す口部材30において、芯部31の第1筒部33との接合面には、芯部31の径方向y外側に向かって突出する凸部36が形成されており、かつ、第1筒部33の芯部31との接合面には、第1筒部33の径方向y外側に向かって陥没して、上記凸部36を受け入れる凹部37が形成されている。
凸部36は、芯部31の外周面に沿って、連続して形成された凸条である。また、凹部37は、第1筒部33の内周面に沿って、連続して形成された凹条である。一対の凸部36および凹部37は、芯部31と第1筒部33との接合面の表面積を増大させることから、例えば、第2筒部34の先端34aを軸線aに向かって湾曲させることにより、外套部32に負荷がかかった場合であっても、芯部31と外套部32とが剥離することを防止できる。
In the mouth member 30 shown in FIG. 9, a convex portion 36 protruding outward in the radial direction y of the core portion 31 is formed on the joint surface of the core portion 31 with the first cylindrical portion 33, and the first A concave portion 37 that is recessed toward the outside in the radial direction y of the first cylindrical portion 33 to receive the convex portion 36 is formed on the joint surface of the first cylindrical portion 33 with the core portion 31.
The convex portion 36 is a ridge formed continuously along the outer peripheral surface of the core portion 31. The concave portion 37 is a concave line formed continuously along the inner peripheral surface of the first cylindrical portion 33. Since the pair of convex portions 36 and the concave portion 37 increase the surface area of the joint surface between the core portion 31 and the first cylindrical portion 33, for example, the tip 34a of the second cylindrical portion 34 is curved toward the axis a. Thus, even when a load is applied to the mantle portion 32, the core portion 31 and the mantle portion 32 can be prevented from peeling off.

外套部32は、第1筒部33において、径方向y外側に延びるフランジ38を有している。これにより、一対の凸部36および凹部37を形成するスペースに余裕が生じることとなり、口部材30の径方向yにおける凸部36の長さや凹部37の深さを、それぞれ大きく設定することができる。凸部36の長さや凹部37の深さの好適範囲は、図1に示す口部材10における凸部16および凹部17の場合と同様である。   The outer jacket portion 32 has a flange 38 extending outward in the radial direction y in the first cylindrical portion 33. As a result, there is room in the space for forming the pair of convex portions 36 and the concave portion 37, and the length of the convex portion 36 and the depth of the concave portion 37 in the radial direction y of the mouth member 30 can be set large. . The preferable range of the length of the convex part 36 and the depth of the concave part 37 is the same as that of the convex part 16 and the concave part 17 in the mouth member 10 shown in FIG.

図9に示す口部材30は、図1に示す口部材10の場合と同様に、医療用容器本体としての、熱可塑性プラスチック製のフィルムからなる可撓性を有する袋体(例えば、輸液バッグ)や、熱可塑性プラスチック製のボトル(例えば、輸液ボトル)などの口部に取り付けることによって、医療用容器として用いられる。
なお、図11に示す口部材70は、本考案の比較例であって、図9に示す口部材30との対比より明らかなように、芯部71と、外套部72の第1筒部73と、において、一対の凸部および凹部を有していないことを特徴とする。この口部材は、芯部71と第1筒部73との接合面の表面積が小さいことから、例えば、第2筒部74の下流D側端縁74aを、その軸線aに向かって湾曲させた場合には、芯部71と外套部72とが剥離するという不具合を生じるおそれがある。
The mouth member 30 shown in FIG. 9 is a flexible bag body (for example, an infusion bag) made of a thermoplastic film as a medical container body, as in the case of the mouth member 10 shown in FIG. Or, it is used as a medical container by being attached to a mouth of a thermoplastic bottle (for example, an infusion bottle).
Note that the mouth member 70 shown in FIG. 11 is a comparative example of the present invention, and as is clear from comparison with the mouth member 30 shown in FIG. 9, the core portion 71 and the first tube portion 73 of the mantle portion 72. And a pair of convex portions and concave portions are not provided. Since this mouth member has a small surface area of the joint surface between the core portion 71 and the first tube portion 73, for example, the downstream D side edge 74a of the second tube portion 74 is curved toward the axis a. In such a case, there is a risk that the core portion 71 and the mantle portion 72 are peeled off.

図1、図4〜6および図9に示す口部材(芯部)においては、いずれも、芯部側に凸部が形成されているが、本考案では、これに限定されるものではなく、例えば、
本考案は、以上の記載に限定されるものではなく、実用新案登録請求の範囲に記載した事項の範囲において、種々の設計変更を施すことが可能である。
In the mouth member (core part) shown in FIG. 1, FIGS. 4 to 6 and FIG. 9, the convex part is formed on the core part side, but the present invention is not limited to this, For example,
The present invention is not limited to the above description, and various design changes can be made within the scope of the matters described in the claims of the utility model registration.

本考案に係る口部材の一実施形態を示す片側断面図である。It is a half sectional view showing one embodiment of a mouth member concerning the present invention. 図1に示す口部材10の部分拡大断面図である。It is a partial expanded sectional view of the mouth member 10 shown in FIG. (a)は、図1に示す口部材10の芯部11を示す斜視図、(b)は、(a)の平面図である。(A) is a perspective view which shows the core part 11 of the opening | mouth member 10 shown in FIG. 1, (b) is a top view of (a). 芯部の設計変更例を示す斜視図である。It is a perspective view which shows the example of a design change of a core part. (a)は、芯部の他の設計変更例を示す斜視図、(b)は、(a)の平面図である。(A) is a perspective view which shows the other example of a design change of a core part, (b) is a top view of (a). 芯部のさらに他の設計変更例を示す斜視図である。It is a perspective view which shows the other example of a design change of a core part. 本考案に係る医療用容器の一実施形態を示す正面図である。It is a front view showing one embodiment of a medical container concerning the present invention. 本考案に係る医療用容器の他の実施形態を示す正面図である。It is a front view which shows other embodiment of the medical container which concerns on this invention. 本考案に係る口部材の他の実施形態を示す片側断面図である。It is a half sectional view which shows other embodiment of the mouth member which concerns on this invention. 口部材の比較例を示す片側断面図である。It is a half sectional view which shows the comparative example of an opening member. 口部材の他の比較例を示す片側断面図である。It is a half sectional view which shows the other comparative example of an opening member. 従来の口部材の一例を示す片側断面図である。It is a half sectional view which shows an example of the conventional mouth member. 特許文献1に記載の口部材を示す部分断面図である。It is a fragmentary sectional view showing a mouth member given in patent documents 1.

符号の説明Explanation of symbols

10,30 口部材
11,31 芯部
11b,31b 開口端
12,32 外套部
13,33 第1筒部
14,34 第2筒部
14a,34a 下流側端縁
15 弾性封止体
16,36 凸部
17,37 凹部
20,25 医療用容器
21 袋体
26 ボトル
10, 30 Port member 11, 31 Core part 11b, 31b Open end 12, 32 Mantle part 13, 33 First cylinder part 14, 34 Second cylinder part 14a, 34a Downstream edge 15 Elastic sealing body 16, 36 Convex Portions 17 and 37 Recesses 20 and 25 Medical container 21 Bag body 26 Bottle

Claims (11)

熱可塑性プラスチックからなる略円筒状の芯部と、熱可塑性プラスチックからなる略円筒状の外套部と、前記芯部の一方の開口を封鎖する、ゴムまたは熱可塑性エラストマーからなる略円盤状の弾性封止体と、備える口部材であって、
前記外套部は、前記芯部の外周面に接合される第1筒部と、前記芯部との接合箇所から、前記弾性封止体によって封鎖される前記芯部の開口端に向かう方向において、前記開口端よりもさらに下流側へ延びる第2筒部とを一体的に備えており、
前記第2筒部が、その前記下流側端縁が前記外套部の軸線に向かって湾曲することにより前記弾性封止体の前記下流側端面を繋ぎ止めるものであり、かつ、
前記芯部の前記第1筒部との接合面および前記第1筒部の前記芯部との接合面のいずれか一方に、前記芯部および第1筒部の径方向に突出する凸部を有しており、他方に、前記凸部を受け入れる凹部を有していることを特徴とする、口部材。
A substantially cylindrical core portion made of thermoplastic plastic, a substantially cylindrical mantle portion made of thermoplastic plastic, and a substantially disk-shaped elastic seal made of rubber or thermoplastic elastomer that seals one opening of the core portion. A stop and a mouth member provided,
In the direction toward the opening end of the core part sealed by the elastic sealing body, the outer sleeve part is joined from the first cylindrical part joined to the outer peripheral surface of the core part and the core part. A second cylindrical portion that extends further downstream than the open end;
The second cylindrical portion is configured to connect the downstream end surface of the elastic sealing body by connecting the downstream end edge thereof to the axis of the mantle portion; and
A convex part protruding in the radial direction of the core part and the first cylinder part is provided on either the joint surface of the core part with the first cylinder part or the joint surface of the first cylinder part with the core part. The mouth member is characterized by having a concave portion for receiving the convex portion on the other side.
前記凹部が、前記芯部または前記第1筒部の軸線方向に互いに間隔をおいて対向配置される一対の挿入面と、各前記挿入面における前記径方向外側端縁を連結する当接面とを有するものであることを特徴とする、請求項1に記載の口部材。   A pair of insertion surfaces in which the recesses are opposed to each other in the axial direction of the core portion or the first tube portion, and a contact surface that connects the radially outer edges of the insertion surfaces; The mouth member according to claim 1, wherein: 前記外套部が、前記第1筒部において、径方向外側に延びるフランジを有していることを特徴とする、請求項1または2に記載の口部材。   The mouth member according to claim 1 or 2, wherein the mantle portion has a flange extending radially outward in the first tube portion. 前記一対の凸部および凹部が、前記芯部の外周面または前記第1筒部の内周面に沿って、連続して形成されていることを特徴とする、請求項1〜3のいずれかに記載の口部材。   The pair of convex portions and concave portions are continuously formed along the outer peripheral surface of the core portion or the inner peripheral surface of the first tube portion. The mouth member according to 1. 前記一対の凸部および凹部を2つ以上有していることを特徴とする、請求項1〜4のいずれかに記載の口部材。   The mouth member according to any one of claims 1 to 4, wherein the mouth member has two or more of the pair of convex portions and concave portions. 前記凸部が、前記芯部の前記第1筒部との接合面に配置され、かつ、前記凹部が、前記第1筒部の前記芯部との接合面に配置されていることを特徴とする、請求項1〜5のいずれかに記載の口部材。   The convex portion is disposed on a joint surface of the core portion with the first tube portion, and the concave portion is disposed on a joint surface of the first tube portion with the core portion. The mouth member according to any one of claims 1 to 5. 前記芯部と前記外套部とが、多色成形またはインサート成形によって一体化されたものであることを特徴とする、請求項1〜6のいずれかに記載の口部材。   The mouth member according to any one of claims 1 to 6, wherein the core portion and the mantle portion are integrated by multicolor molding or insert molding. 熱可塑性プラスチックで形成される医療用容器本体と、請求項1〜7のいずれかに記載の口部材と、を備えていることを特徴とする、医療用容器。   A medical container comprising a medical container body formed of a thermoplastic and the mouth member according to any one of claims 1 to 7. 前記医療用容器本体の内表面と、前記芯部の外周面とが、熱溶着によって固定されていることを特徴とする、請求項8に記載の医療用容器。   The medical container according to claim 8, wherein an inner surface of the medical container body and an outer peripheral surface of the core part are fixed by heat welding. 前記医療用容器本体が、可撓性を有する袋体であることを特徴とする、請求項8または9に記載の医療用容器。   The medical container according to claim 8 or 9, wherein the medical container body is a flexible bag. 前記医療用容器本体が、ボトルであることを特徴とする、請求項8または9に記載の医療用容器。   The medical container according to claim 8 or 9, wherein the medical container body is a bottle.
JP2004006942U 2004-11-26 2004-11-26 Mouth member and medical container including the same Expired - Lifetime JP3108995U (en)

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