JP2012095783A - Medical resin container - Google Patents

Medical resin container Download PDF

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JP2012095783A
JP2012095783A JP2010244865A JP2010244865A JP2012095783A JP 2012095783 A JP2012095783 A JP 2012095783A JP 2010244865 A JP2010244865 A JP 2010244865A JP 2010244865 A JP2010244865 A JP 2010244865A JP 2012095783 A JP2012095783 A JP 2012095783A
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mouth
fitting
plug
plug member
resin container
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Kentaro Uchihashi
健太郎 内橋
Takashi Sano
尊 佐野
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Kyoraku Co Ltd
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Kyoraku Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a medical resin container made perfect in the sealing functionality of a plug member by certainly preventing the rotation of the plug member mounted on a mouth part and made superior in sealing characteristics by the enhancement of the welding strength due to an increase in the opposed area of the plug member to the mouth part.SOLUTION: The medical resin container includes the plug member 4 fitted to and mounted on the mouth part 3 cylindrically protruded from a container body 2 so as to cover the mouth part 3. The rubber plug for sealing the mouth part 3 is allowed to closely fill the part along the top surface wall 7 in the plug member 4. The mouth part 3 and the plug member 4 are equipped with the rotation preventing fitting structure of the plug member 4 formed of the fitting projection 10 formed to the outer periphery of the mouth part 3 and the fitting hole part 11 formed to the inner periphery of the plug member 4. The top surface wall 7 of the plug member 4 is equipped with an opening means for exposing the rubber plug by a pull top 8.

Description

本発明は、糖質輸液剤、電解質輸液剤、血漿増量剤、浸透圧利尿剤、アミノ酸輸液剤、脂肪乳剤、高カロリー輸液剤等の静脈注射用輸液や、結腸栄養剤、高蛋白栄養剤、成分栄養剤、流動食等の結腸的高カロリー栄養剤等の医療用樹脂製容器に関するものである。   The present invention includes carbohydrate infusions, electrolyte infusions, plasma bulking agents, osmotic diuretics, amino acid infusions, fat emulsions, high calorie infusions, etc., colon nutrients, high protein nutrients, The present invention relates to a resin container for medical use such as an ingredient nutrient and a colonic high calorie nutrient such as liquid food.

この種の医療用樹脂容器の多くは、ポリオレフィン系等の樹脂と、熱可塑性エラストマーとで構成された栓体により口部を封止されており、注射針などを直接突き刺して使用するものであるから、熱可塑性エラストマーが略中央に露出するように配置されており、その周囲をポリオレフィン系樹脂で囲まれた構成となっている。このような容器において、栓体と容器本体とは、容器本体より筒状に突出している口部に形成された環状のフランジ部と、栓体に形成された環状のフランジ部とを合わせて、口部のフランジ部と栓体のフランジ部とを熱溶着することで内容物が封止されている（特許文献１、２、３参照）。   Many of these types of medical resin containers have their mouths sealed with plugs made of polyolefin-based resins and thermoplastic elastomers, and are used by directly piercing an injection needle or the like. Therefore, the thermoplastic elastomer is arranged so as to be exposed at substantially the center, and the periphery thereof is surrounded by a polyolefin resin. In such a container, the stopper body and the container body are formed by combining an annular flange portion formed in the mouth portion protruding in a cylindrical shape from the container body and an annular flange portion formed in the stopper body, The contents are sealed by thermally welding the flange portion of the mouth and the flange portion of the plug (see Patent Documents 1, 2, and 3).

ところで、上述のように容器と口部とのフランジ部で熱溶着するためにはともに同一樹脂などの相性の良い樹脂でなければ溶着強度が低くなってしまい、溶着が困難になってしまう。近時の医療用樹脂容器においては、種々の理由から多層樹脂構造となっている。例えば、薬剤の吸着を低減させるために環状オレフィンを最内層に備えたものがあるが、環状オレフィン単体では剛性が高すぎて耐衝撃性に劣るために、その外層にはポリプロピレンが主体層として配置される。このとき、例えばブロー成形法を用いて成形した場合には成形上、必然的にフランジ部の溶着面に環状オレフィンが露出することになる。一方、栓体は、剛性など種々の理由からポリプロピレン主体のものが主流であるため、これらを溶着させようとすると環状オレフィンとポリプロピレンとを溶着させることとなるために溶着強度が低く、溶着が困難となる。   By the way, in order to heat-weld at the flange part of a container and an opening part as mentioned above, if it is not resin with good compatibility, such as the same resin, welding strength will become low and welding will become difficult. Recent medical resin containers have a multilayer resin structure for various reasons. For example, some olefins are provided in the innermost layer to reduce the adsorption of chemicals. However, because the cyclic olefin alone is too rigid and inferior in impact resistance, polypropylene is used as the main layer in the outer layer. Is done. At this time, for example, when molding is performed using a blow molding method, the cyclic olefin is inevitably exposed on the welding surface of the flange portion for molding. On the other hand, the plug body is mainly made of polypropylene for various reasons such as rigidity. Therefore, when these are to be welded, the cyclic olefin and polypropylene are welded, so the welding strength is low and welding is difficult. It becomes.

このように、容器と栓体との互いの平面での溶着だけでは溶着強度が不十分になることがあり、長期間安定して封止することができないことがある。そこで、例えば特許文献４の技術によれば、容器口部に環状の突起部を備え、さらに栓体側にスカートと係止爪を備えることで、突起部に係止爪を嵌合させて溶着強度だけに頼らず安定して封止できる構造が示されている。   As described above, the welding strength may be insufficient only by welding the container and the plug body on each other's plane, and may not be stably sealed for a long period of time. Therefore, for example, according to the technique of Patent Document 4, the container mouth is provided with an annular protrusion, and further provided with a skirt and a locking claw on the plug body side, so that the locking claw is fitted to the protrusion and the welding strength is increased. A structure that can be stably sealed without depending on the above is shown.

特開２００４−６５４５９号公報JP 2004-65459 A 特開２００４−２８３５１９号公報JP 2004-283519 A 特開２０１０−５７５７５号公報JP 2010-57575 A 特開平１０−１５１１７１号公報JP-A-10-151171

しかしながら、特許文献４に記載の技術では、環状突起部と係止爪とを用いて上下のずれを防止することはできるが、周方向のずれ（回転）を防止する手段がないために、容器本体の口部に対するキャップの封止状態が不完全になりがちである。   However, the technique described in Patent Document 4 can prevent vertical displacement using the annular protrusion and the locking claw, but there is no means for preventing circumferential displacement (rotation). The sealing state of the cap with respect to the mouth of the main body tends to be incomplete.

そこで本発明は、口部の外周に形成された嵌合凸部と栓体の内周に形成された嵌合凹部または嵌合孔部とによる栓体の回り止め嵌合構造を備えることにより、口部に装着した栓体の回り阻止が確実に保持されて栓体の封止機能性が完全であるとともに、口部に対する栓体の対向面積の増大による溶着強度の向上により封止特性にすぐれた医療用樹脂容器を提供すること目的とするものである。   Therefore, the present invention comprises a stopper detent fitting structure with a fitting convex portion formed on the outer periphery of the mouth portion and a fitting concave portion or fitting hole portion formed on the inner periphery of the stopper body. The stopper attached to the mouth is reliably prevented from rotating and the sealing function of the stopper is complete, and the sealing property is improved by improving the welding strength by increasing the facing area of the stopper to the mouth. It is an object of the present invention to provide a medical resin container.

前記目的を達成する本発明にかかわる請求項１記載の医療用樹脂容器は、
容器本体より筒状に突出している口部に被せて打ち込み装着する栓体を備えた医療用樹脂容器であって、
前記口部は、少なくとも口部外周の一部が外側に突き出した嵌合凸部を備え、
前記栓体は、前記口部外径と略同様の内径の側壁を有して前記口部外周と溶着され、前記側壁は、前記嵌合凸部に対応した前記嵌合凸部全体が嵌め込まれる孔、あるいは凹状の嵌合凹部を有し、前記栓体の回り止め及び脱着防止構造を備えることを特徴とするものである。 The medical resin container according to claim 1 according to the present invention for achieving the object,
A medical resin container provided with a stopper body that is driven and mounted over a mouth protruding in a cylindrical shape from the container body,
The mouth portion includes a fitting convex portion in which at least a part of the outer periphery of the mouth protrudes outward,
The plug body has a side wall having an inner diameter substantially the same as the outer diameter of the mouth portion, and is welded to the outer periphery of the mouth portion, and the entire fitting convex portion corresponding to the fitting convex portion is fitted into the side wall. It has a hole or a concave fitting concave portion, and is provided with a structure for preventing rotation of the plug and preventing attachment / detachment.

そして、本発明においては、栓体の回り止め嵌合構造として、口部に装着した栓体の抜け止め構造となっていること、および栓体の天面壁は、プルトップにより少なくとも一部を除去してゴム栓を露出させる開封手段を備えていることが好適である。   In the present invention, the stopper is configured to prevent the stopper from being attached to the mouth, and the top wall of the stopper is at least partially removed by a pull top. It is preferable to provide an opening means for exposing the rubber stopper.

本発明によれば、容器本体より筒状に突出する口部の外周に形成された嵌合凸部と、栓体の内周に形成された嵌合凹部または嵌合孔部とによる栓体の回り止め嵌合構造を備えることにより、口部に装着した栓体の回り阻止が確実に保持されて栓体の封止機能性が完全であるとともに、口部に対する栓体の対向面積の増大による溶着強度の向上により封止特性にすぐれた医療用樹脂容器を得ることができるものである。   According to the present invention, the plug body includes a fitting convex portion formed on the outer periphery of the mouth portion protruding in a cylindrical shape from the container body and a fitting concave portion or a fitting hole portion formed on the inner periphery of the plug body. By providing a non-rotating fitting structure, the stopper of the plug mounted on the mouth is reliably retained, the sealing functionality of the plug is complete, and the area of the plug facing the mouth is increased. By improving the welding strength, a medical resin container having excellent sealing characteristics can be obtained.

本発明の一実施の形態に係る樹脂製医療容器の正面図、側面図および栓体部分の平面図である。It is a front view of a resin medical container concerning one embodiment of the present invention, a side view, and a top view of a stopper part. 同上全体斜視図である。It is a whole perspective view same as the above. 同上要部斜視図である。It is a principal part perspective view same as the above. 同上要部断面図である。It is a principal part sectional drawing same as the above. 同上口部に栓体を装着した態様を示す要部断面図である。It is principal part sectional drawing which shows the aspect which mounted | wore the stopper part same as the above. 本発明の他の実施の形態に係る樹脂製医療容器の要部断面図である。It is principal part sectional drawing of the resin-made medical container which concerns on other embodiment of this invention. 同上要部断面図である。It is a principal part sectional drawing same as the above. 本発明のさらに他の実施の形態に係る樹脂製医療容器の要部断面図である。It is principal part sectional drawing of the resin-made medical container which concerns on other embodiment of this invention.

図１ないし図５に示すように、本発明に係る樹脂製医療容器１は、容器本体２より突出した口部３に被せて打ち込み装着する栓体４を備えてなるものであって、容器本体２の底部は容器を倒立姿勢に吊り下げるための吊り具５を有している。栓体４は口部３に被せるキャップ状のものであって、栓体４の内部にはその天面壁６に沿った部分に口部３を封止するゴム栓７が密に装填されている。ゴム栓７はゴムまたは熱可塑性エラストマーでなり、ゴムの場合は後加工で栓体４に密に嵌合し、熱可塑性エラストマーで構成する場合は栓体４の成形工程において熱可塑性エラストマーを型内に注入して成形する。栓体４にはその天面壁７にプルトップ８により一部を除去してゴム栓７を露出させる開封手段を備えている。ゴム栓７は口部３に密に挿入される突出部９を有している。栓体４はその開口側に向けて緩い角度αで広がる拡開していて、口部３に対する栓体４の装着をし易くしてある。   As shown in FIGS. 1 to 5, a resin medical container 1 according to the present invention is provided with a plug body 4 that is driven and mounted over a mouth 3 protruding from a container body 2. The bottom of 2 has a hanging tool 5 for hanging the container in an inverted posture. The plug body 4 is a cap-shaped member that covers the mouth portion 3, and a rubber plug 7 that seals the mouth portion 3 is densely loaded inside the plug body 4 along the top wall 6. . The rubber plug 7 is made of rubber or a thermoplastic elastomer. In the case of rubber, the rubber plug 7 is closely fitted to the plug body 4 by post-processing. When the rubber plug 7 is made of a thermoplastic elastomer, the thermoplastic elastomer is put into the mold in the molding process of the plug body 4. Inject and mold. The plug body 4 is provided with an opening means for removing a part of the top wall 7 by a pull top 8 on the top wall 7 to expose the rubber plug 7. The rubber stopper 7 has a protruding portion 9 that is closely inserted into the mouth portion 3. The plug body 4 is widened toward the opening side at a gentle angle α so that the plug body 4 can be easily attached to the mouth 3.

前記口部３と前記栓体４は、口部３の外周に形成された嵌合凸部１０と栓体４の内周に形成された嵌合孔部１１とによる栓体４の回り止め嵌合構造を備えている。すなわち、口部３の外周に形成された少なくとも口部外周の一部が外側に突き出した嵌合凸部１０と栓体４の側壁の内周に形成された嵌合凸部１０に対応する嵌合凸部全体が嵌め込まれる孔である嵌合孔部１１との位置合わせをして、口部３に栓体４をゴム栓７の突出部９が口部３に密に挿入されるように栓体４を打ち込むと、栓体４側の嵌合凸部１０に栓体４側の嵌合孔部１１が嵌合して、口部３に栓体４が回り止め状態で固定される。なお、口部３に備えられる側壁の内径は口部外径と略同様の径であり、この状態において口部３にはゴム栓７の突出部９が密に挿入されているので、容器本体２およびその口部３が軟質材でなるものであっても、口部３がゴム栓７によって固く補強された状態となり、口部３に栓体４を嵌め込むと口部３と側壁とは密着するようになっている。このため、口部３の嵌合凸部１０と栓体４の嵌合孔部１１との嵌合が不用意に外れることがなく、このように口部３に装着した栓体４とは熱溶着または振動溶着により溶着することで一体化し、例えば異なる樹脂などで溶着強度が弱い場合でも嵌合凸部１０及び嵌合孔部１１により回り止め及び脱着防止することができるので、封止状態の保持をより強固にすることが可能である。   The mouth portion 3 and the plug body 4 are fitted to the stopper body 4 by a fitting convex portion 10 formed on the outer periphery of the mouth portion 3 and a fitting hole portion 11 formed on the inner periphery of the stopper body 4. It has a combined structure. That is, the fitting corresponding to the fitting protrusion 10 formed on the inner periphery of the side wall of the plug body 4 and the fitting protrusion 10 that is formed on the outer periphery of at least the opening of the mouth portion 3 protrudes outward. Alignment with the fitting hole 11 which is a hole into which the entire fitting convex part is fitted, so that the plug 4 is inserted into the mouth 3 and the protruding part 9 of the rubber plug 7 is inserted into the mouth 3 closely. When the plug body 4 is driven, the plug hole 4 side fitting hole 11 is fitted into the plug body 4 side fitting convex part 10, and the plug body 4 is fixed to the mouth part 3 in a non-rotating state. Note that the inner diameter of the side wall provided in the mouth portion 3 is substantially the same as the outer diameter of the mouth portion. In this state, the protruding portion 9 of the rubber plug 7 is closely inserted into the mouth portion 3, so that the container body 2 and its mouth part 3 are made of a soft material, the mouth part 3 is firmly reinforced by the rubber plug 7, and when the plug body 4 is fitted into the mouth part 3, the mouth part 3 and the side wall are It comes to adhere closely. For this reason, the fitting between the fitting convex portion 10 of the mouth portion 3 and the fitting hole portion 11 of the plug body 4 is not inadvertently removed, and thus the plug body 4 attached to the mouth portion 3 is not heated. It is integrated by welding by welding or vibration welding. For example, even when the welding strength is weak with different resins or the like, the fitting convex portion 10 and the fitting hole portion 11 can prevent rotation and prevention of desorption. It is possible to make the holding stronger.

図６および図７に示すように、口部３に装着した栓体４の抜け止め構造とすることができる。すなわち、口部３側の嵌合凸部を下向き（栓体４の装着方向）に張り出す鈎形の嵌合鈎部１２に形成して、口部３に装着した栓体４の嵌合孔部１１に嵌合鈎部１２が係止して、栓体４の抜け止めと回り止めがともに阻止されるようにしてある。また、口部３の外径を栓体４装着方向に向かって縮径させ、それに対応して栓体４の内径を上方に向けて縮径させることで、栓体４を口部３にスムーズに装着することができる。このとき、口部３の外径より栓体４を嵌め込むことができる程度に側壁の内径を小さくしておくことで、口部３と栓体４とをより強く密着させ、良好な溶着強度を保つことができる。この構成においては、図８に示すように栓体４には嵌合孔部に代えて鈎形の嵌合凹部１３を形成してもよい。なお、図１ないし図５に示す構成においても、栓体４には嵌合孔部１１に代えて嵌合凹部１３を形成したものとすることができる。また、嵌合凹部１３は、嵌合凸部１０と同様の形状に凹ませ、嵌合凸部１０全体と嵌合凹部１３とが全体に密着する形状とすることで溶着面積を増大させ、より良好な溶着強度を得ることができる。   As shown in FIGS. 6 and 7, the stopper 4 attached to the mouth 3 can be prevented from coming off. That is, the fitting convex part on the side of the mouth part 3 is formed in the hook-like fitting collar part 12 projecting downward (in the direction in which the stopper body 4 is attached), and the fitting hole of the stopper body 4 attached to the mouth part 3 is formed. The fitting collar 12 is locked to the portion 11 so that the stopper 4 is prevented from being detached and prevented from being rotated. In addition, the outer diameter of the mouth portion 3 is reduced toward the direction in which the plug body 4 is mounted, and the inner diameter of the plug body 4 is correspondingly reduced toward the upper side, so that the stopper body 4 is smoothly moved to the mouth portion 3. Can be attached to. At this time, by reducing the inner diameter of the side wall to such an extent that the plug body 4 can be fitted to the outer diameter of the mouth portion 3, the mouth portion 3 and the plug body 4 are more closely adhered to each other, and good welding strength is obtained. Can keep. In this configuration, as shown in FIG. 8, a hook-shaped fitting recess 13 may be formed in the plug body 4 instead of the fitting hole. 1 to 5, the plug body 4 may be formed with a fitting recess 13 instead of the fitting hole 11. Moreover, the fitting recessed part 13 is dented in the same shape as the fitting convex part 10, and the welding convex part 10 and the fitting recessed part 13 are made into the shape which adheres to the whole, and a welding area is increased, and more Good welding strength can be obtained.

本発明に係る医療用樹脂容器１の容器本体２を構成する熱可塑性樹脂としては、低密度ポリエチレン（ＬＤＰＥ）、直鎖状低密度ポリエチレン（ＬＬＤＰＥ）、高密度ポリエチレン（ＨＤＰＥ）、ポリプロピレンなどのポリオレフィン系樹脂、エチレン・酢酸ビニル共重合体（ＥＶＡ）、ポリ塩化ビニル（ＰＶＣ）、アイオノマー樹脂、各種熱可塑性エラストマーおよびこれらの２種以上の混合物などの軟質樹脂により構成される。栓体４はポリエチレン（ＰＰ）で構成される。   Examples of the thermoplastic resin constituting the container body 2 of the medical resin container 1 according to the present invention include polyolefins such as low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), and polypropylene. It is composed of a soft resin such as an ethylene-based resin, an ethylene / vinyl acetate copolymer (EVA), polyvinyl chloride (PVC), an ionomer resin, various thermoplastic elastomers, and a mixture of two or more thereof. The plug 4 is made of polyethylene (PP).

１ 樹脂製医療容器
２ 容器本体
３ 口部
４ 栓体
５ 吊り具
６ 天面壁
７ ゴム栓
８ プルトップ
９ 突出部
１０ 嵌合凸部
１１ 嵌合孔部
１２ 嵌合鈎部
１３ 鈎形の嵌合凹部 DESCRIPTION OF SYMBOLS 1 Resin medical container 2 Container main body 3 Mouth part 4 Plug body 5 Hanging tool 6 Top surface wall 7 Rubber stopper 8 Pull top 9 Protruding part 10 Fitting convex part 11 Fitting hole part 12 Fitting flange part 13 Cage-shaped fitting concave part

Claims (4)

容器本体より筒状に突出している口部に被せて打ち込み装着する栓体を備えた医療用樹脂容器であって、
前記口部は、少なくとも口部外周の一部が外側に突き出した嵌合凸部を備え、
前記栓体は、前記口部外径と略同様の内径の側壁を有して前記口部外周と溶着され、前記側壁は、前記嵌合凸部に対応した前記嵌合凸部全体が嵌め込まれる孔、あるいは凹状の嵌合凹部を有し、前記栓体の回り止め及び脱着防止構造を備えることを特徴とする医療用樹脂容器。 A medical resin container provided with a stopper body that is driven and mounted over a mouth protruding in a cylindrical shape from the container body,
The mouth portion includes a fitting convex portion in which at least a part of the outer periphery of the mouth protrudes outward,
The plug body has a side wall having an inner diameter substantially the same as the outer diameter of the mouth portion, and is welded to the outer periphery of the mouth portion, and the entire fitting convex portion corresponding to the fitting convex portion is fitted into the side wall. A medical resin container having a hole or a concave fitting concave portion and having a structure for preventing rotation of the plug and preventing attachment / detachment. 前記嵌合凸部は、前記栓体の装着方向に向かって断面の外径寸法が小さくなるように傾斜したくさび形状であることを特徴とする請求項１記載の医療用樹脂容器。   The medical resin container according to claim 1, wherein the fitting convex portion has a wedge shape that is inclined so that an outer diameter dimension of a cross-section becomes smaller toward a direction in which the plug body is mounted. 前記口部は、前記栓体の装着方向に向かって縮径し、
前記栓体の内径は、前記口部と対応して縮径していることを特徴とする請求項１または２記載の医療用樹脂容器。 The mouth portion is reduced in diameter in the direction of mounting the plug,
The medical resin container according to claim 1, wherein an inner diameter of the stopper is reduced in correspondence with the mouth portion. 前記嵌合凹部は、前記嵌合凸部と同様の形状に凹んでおり、嵌合凸部全体と嵌合凹部とが溶着されることを特徴とする請求項１から３のいずれか１項に記載の医療用樹脂容器。   4. The fitting recess according to claim 1, wherein the fitting recess is recessed in the same shape as the fitting projection, and the entire fitting projection and the fitting recess are welded. The medical resin container as described.
JP2010244865A 2010-10-31 2010-10-31 Medical resin container Pending JP2012095783A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013255636A (en) * 2012-06-12 2013-12-26 Kawasumi Lab Inc Scab peeling unit and medical appliance
JP2017149486A (en) * 2017-05-01 2017-08-31 株式会社Ｔａｒａｍａ Cap structure of container and container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013255636A (en) * 2012-06-12 2013-12-26 Kawasumi Lab Inc Scab peeling unit and medical appliance
JP2017149486A (en) * 2017-05-01 2017-08-31 株式会社Ｔａｒａｍａ Cap structure of container and container

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