JP3383972B2 - Syringe flange - Google Patents
Syringe flangeInfo
- Publication number
- JP3383972B2 JP3383972B2 JP33802096A JP33802096A JP3383972B2 JP 3383972 B2 JP3383972 B2 JP 3383972B2 JP 33802096 A JP33802096 A JP 33802096A JP 33802096 A JP33802096 A JP 33802096A JP 3383972 B2 JP3383972 B2 JP 3383972B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- annular rib
- syringe
- wall
- base end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガラス製注射器の
外筒の短い鍔の長さを補う補助具であり、注射時の操作
を容易にするための注射器のフランジに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary tool for supplementing the length of a short brim of an outer cylinder of a glass syringe, and relates to a flange of the syringe for facilitating the operation during injection.
【０００２】[0002]
【従来の技術】従来、注射器の外筒は合成樹脂製または
ガラス製のものが使用されている。ガラス製のものは、
所要量の注射液が封入保存されており、先端のチップに
注射針を取り付けるだけで使用可能とした所謂プレフィ
ルドシリンジに採用されている。プレフィルドシリンジ
の外筒は長期保存に際して注射液が変質しないようにガ
ラスで製せられており、外筒の先端には注射針を取り付
けるためのチップを有しており、基端にはプランジャー
を押すときに指を掛けるためのフランジが設けられてい
る。2. Description of the Related Art Conventionally, an outer cylinder of a syringe is made of synthetic resin or glass. The one made of glass is
A required amount of injection liquid is enclosed and stored, and it is used in a so-called prefilled syringe that can be used simply by attaching an injection needle to the tip of the tip. The outer cylinder of the prefilled syringe is made of glass so that the injection solution does not deteriorate during long-term storage, and the tip of the outer cylinder has a tip for attaching an injection needle, and the plunger at the base end. A flange is provided for hanging a finger when pushing.
【０００３】しかしながら、ガラス製外筒のフランジは
注射器の外筒の基端を加熱軟化して形成するものである
ため、合成樹脂のように大きく形成することができず、
従って指のごく一部しか掛からないものであるため、特
に高粘度の注射液を注入する時など、プランジャーを押
しにくいなど問題があった。そこで、上記のような問題
を解決するものとして、ガラス製注射器の外筒の短い鍔
の長さを補う補助具（フランジ）が提案されている（特
開平８−７３１号公報、登録実用新案第３００６４１９
号公報、登録実用新案第３０２１８５５号公報、登録実
用新案第３０２１８５６号公報など）。However, since the flange of the glass outer cylinder is formed by heating and softening the base end of the outer cylinder of the syringe, it cannot be formed as large as a synthetic resin.
Therefore, there is a problem that it is difficult to push the plunger, especially when injecting a highly viscous injection solution, because only a small part of the finger is applied. Therefore, as a solution to the above problems, an auxiliary tool (flange) for supplementing the length of the short collar of the outer cylinder of the glass syringe has been proposed (JP-A-8-731, Registered Utility Model No. 1). 3006419
Gazette, registered utility model No. 3021855, registered utility model No. 3021856, etc.).
【０００４】特開平８−７３１号公報のフランジは、フ
ランジ部片と抱持部片からなる筒状部材であって、装着
孔（筒状部分）に装着用の開口を設けたものであり、登
録実用新案第３００６４１９号公報のフランジは、フラ
ンジ部片の装着孔に、外筒のフランジと嵌装する環状段
部を設けたものである。また、登録実用新案第３０２１
８５５号公報のフランジは、Ｃ字型断面の半円筒状体で
あって、シリンジ軸線方向の移動やシリンジと鍔補助具
間の回転を防止し、かつガスケット抜け防止のストッパ
機能を備えたものであり、登録実用新案第３０２１８５
６号公報のフランジは、短い円筒体からなる鍔付き支持
筒とこれと一体化されたガスケット抜け防止用キャップ
からなるものである。The flange of Japanese Unexamined Patent Publication No. 8-731 is a cylindrical member composed of a flange piece and a holding piece, and has a mounting hole (cylindrical portion) provided with a mounting opening. The flange of Registered Utility Model No. 300419 is provided with an annular step portion that is fitted to the flange of the outer cylinder in the mounting hole of the flange piece. In addition, registered utility model No. 3021
The flange of Japanese Patent No. 855 is a semi-cylindrical body having a C-shaped cross section, and is provided with a stopper function for preventing movement in the syringe axis direction and rotation between the syringe and the brim assist tool, and for preventing gasket removal. Yes, registered utility model No. 302185
The flange of Japanese Patent No. 6 comprises a support cylinder with a collar made of a short cylindrical body and a gasket removal preventing cap integrated with the support cylinder.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、特開平
８−７３１号公報および登録実用新案第３００６４１９
号公報のフランジは、ストッパー部がなく簡単にスライ
ド移動するため、使用時に医療事故を起こす虞があり、
また、登録実用新案第３０２１８５５号公報のフランジ
は、容易にシリンジから外れてしまうため、使用時に医
療事故を起こす虞があり、登録実用新案第３０２１８５
６号公報のフランジは、使用時に支持筒とキャップを連
結する連結帯が邪魔になり、キャップ部の組立が困難で
ある、などの欠点を有している。本発明は、如上の事情
に鑑みてなされたもので、使用時に脱落することのない
生産性の改良された注射器のフランジを提供することを
目的とする。However, Japanese Patent Application Laid-Open No. 8-731 and Registered Utility Model No. 3006419.
Since the flange of the gazette has no stopper part and slides easily, there is a risk of causing a medical accident during use.
Further, the flange of Registered Utility Model No. 3021855 is easily removed from the syringe, which may cause a medical accident during use. Registered Utility Model No. 302185.
The flange of Japanese Patent No. 6 has a drawback that the connecting band connecting the support cylinder and the cap during use is an obstacle, and it is difficult to assemble the cap portion. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a flange for a syringe that does not fall off during use and has improved productivity.
【０００６】[0006]
【課題を解決するための手段】本発明は上記の課題を解
決するために鋭意検討の結果、フランジに弾性的に変形
拡張可能なストッパー手段を設けることにより、確実に
脱落防止ができ、かつ容易に注射器に装着することがで
きることを見出し、本発明を完成した。すなわち、本発
明のフランジは、注射器外筒の外壁に挿着可能な短い円
筒部と、該円筒部の基端外壁に突出形成された鍔部と、
円筒部の基端部の内壁の一部を構成するように設けられ
たストッパー部からなり、該ストッパー部は、前記外筒
の環状リブが円筒部の基端方向から進入する場合にの
み、その内径を拡径して該環状リブの進入を許すバネ弾
性を有しており、該ストッパー部に近接して円筒部先端
側内壁に、該ストッパー部を越えて進入してきた前記環
状リブの円筒部先端方向への移動を阻止する係合段部が
設けられてなるものである。ここで、ストッパー部は、
円筒部の基端内壁に片持ち式に形成された一対の爪片で
あり、該爪片の先端部に円筒部の先端方向内向きに傾斜
して拡大する突条を有してなるものが好ましい。As a result of intensive studies to solve the above-mentioned problems, the present invention can surely prevent falling off by providing stopper means which is elastically deformable and expandable on the flange, and can be easily prevented. The present invention has been completed based on the finding that it can be attached to a syringe. That is, the flange of the present invention, a short cylindrical portion that can be inserted into the outer wall of the syringe outer cylinder, and a flange portion that is formed to project on the proximal outer wall of the cylindrical portion,
The stopper portion is provided so as to form a part of the inner wall of the base end portion of the cylindrical portion, and the stopper portion is provided only when the annular rib of the outer cylinder enters from the base end direction of the cylindrical portion. A cylindrical portion of the annular rib that has a spring elasticity that expands the inner diameter to allow the annular rib to enter, and that has entered the inner wall of the distal end side of the cylindrical portion close to the stopper portion beyond the stopper portion. An engagement step portion that prevents movement in the distal direction is provided. Here, the stopper is
A pair of claw pieces formed in a cantilever manner on the inner wall of the base end of the cylindrical portion, the tip portion of the claw piece having a ridge that inclines and expands inward toward the distal end of the cylindrical portion. preferable.
【０００７】[0007]
【発明の実施の形態】次に本発明の実施例について図面
に基づいて説明する。図１は本発明のフランジの正面図
であり、図２はそれぞれ図１の背面図、図３および図４
はそれぞれ図１のＸ−Ｘ線断面図およびＹ−Ｙ線断面図
である。図１〜図４に示すように、本発明のフランジ
は、円筒部１と鍔部２とストッパー部３からなる。スト
ッパー部３は、このフランジに挿着される外筒の環状リ
ブ（図６のＲ）が円筒部１の基端方向から進入する場合
にのみ、その内径を拡径して環状リブＲの進入を許すバ
ネ弾性を有しており、ストッパー部３に近接して円筒部
１先端側内壁に、ストッパー部３を越えて進入してきた
環状リブＲの円筒部１先端方向への移動を阻止する係合
段部４が設けられている。Embodiments of the present invention will now be described with reference to the drawings. 1 is a front view of a flange of the present invention, and FIG. 2 is a rear view of FIG. 1, FIG. 3 and FIG. 4, respectively.
3A and 3B are a sectional view taken along the line XX and a sectional view taken along the line YY of FIG. 1, respectively. As shown in FIGS. 1 to 4, the flange of the present invention comprises a cylindrical portion 1, a collar portion 2 and a stopper portion 3. The stopper portion 3 expands its inner diameter to enter the annular rib R only when the annular rib (R in FIG. 6) of the outer cylinder inserted into this flange enters from the base end direction of the cylindrical portion 1. Has a spring elasticity that allows the annular rib R that has entered the inner wall of the tip end side of the cylindrical portion 1 close to the stopper portion 3 beyond the stopper portion 3 to prevent the annular rib R from moving toward the tip end of the cylindrical portion 1. A joining section 4 is provided.
【０００８】円筒部１は短い筒状に形成されており、本
発明のフランジＦが注射器ＳのバレルＢに先端のチップ
Ｃから装着される関係で（図５、６参照）、その内径は
バレルＢの外径より僅かに大きく形成されている。そし
て円筒部１の基端外壁には鍔部２が突設されており、注
射操作に際して指を掛けるための用をなしている。ま
た、円筒部１の基端部内壁にはストッパー部３と係合段
部４が設けられており、これらが円筒部１に挿着された
バレルＢの環状リブＲと係合して、フランジＦのバレル
Ｂからの脱落を防いでいる。The cylindrical portion 1 is formed in a short tubular shape, and the flange F of the present invention is attached to the barrel B of the syringe S from the tip C of the tip (see FIGS. 5 and 6), and the inner diameter thereof is the barrel. It is formed slightly larger than the outer diameter of B. A flange portion 2 is provided on the outer wall of the base end of the cylindrical portion 1 so as to project the finger during an injection operation. Further, a stopper portion 3 and an engaging step portion 4 are provided on the inner wall of the base end portion of the cylindrical portion 1, and these engage with the annular rib R of the barrel B inserted into the cylindrical portion 1 to form a flange. It prevents F from falling out of barrel B.
【０００９】ストッパー部３としては例えば図３〜４に
示すように、円筒部１の基端部内壁に片持ち式に形成さ
れた一対の爪片が採用される。爪片３は自由端である先
端部が円筒部１方向内向きに傾斜して拡大する突条３１
を有しており、突条３１間の距離が注射器Ｓの環状リブ
Ｒの外径より小さく形成されている一方、スリット３２
により弾性的に外側に変形して爪片３部分の内径を拡径
することができるようになっているので、円筒部１の基
端方向（矢印Ａ方向）から入ってくる注射器Ｓの環状リ
ブＲの進入を許す一方、矢印Ａと反対方向への環状リブ
Ｒの移動を阻止することができる。また、円筒部１の内
壁には爪片３に近接して円筒部１の先端側に係合段部４
が設けられており、爪片３の突条３１を越えて進入した
環状リブＲが更に先端側に移動しないようになってい
る。そして、爪片３の突条３１と係合段部４の幅は略注
射器Ｓの環状リブＲの幅に等しく形成されているので、
突条３１と係合段部４の間に環状リブＲが嵌め込まれた
後は、フランジＦは注射器Ｓから容易に外れることがな
い。尚、横リブ５、縦リブ６はいずれも環状リブＲのセ
ンタリング（リブＲのセンターを軸心に合わせること）
のためのものであり、従って、どちらも略環状リブＲの
外径より若干小さい径の円に接するような高さに形成さ
れている。尚、リブ５はリブ６と同じ形状の縦リブであ
ってもよい。As the stopper portion 3, for example, as shown in FIGS. 3 to 4, a pair of cantilever pieces which are cantilevered on the inner wall of the base end portion of the cylindrical portion 1 are employed. The claw piece 3 has a ridge 31 whose tip end, which is a free end, expands by inclining inward toward the cylindrical portion 1.
And the distance between the protrusions 31 is formed smaller than the outer diameter of the annular rib R of the syringe S, while the slit 32 is formed.
Since it is possible to elastically deform the inside of the claw piece 3 by enlarging the inner diameter of the claw piece 3, the annular rib of the syringe S entering from the base end direction of the cylindrical portion 1 (direction of arrow A). While allowing R to enter, it is possible to prevent movement of the annular rib R in the direction opposite to the arrow A. Further, on the inner wall of the cylindrical portion 1, an engaging step portion 4 is provided on the tip side of the cylindrical portion 1 in the vicinity of the claw piece 3.
Is provided so that the annular rib R that has entered beyond the protrusion 31 of the claw piece 3 does not move further to the tip side. Since the width of the protrusion 31 of the claw piece 3 and the width of the engagement step portion 4 are formed to be substantially equal to the width of the annular rib R of the syringe S,
After the annular rib R is fitted between the ridge 31 and the engagement step portion 4, the flange F does not easily come off from the syringe S. The horizontal ribs 5 and the vertical ribs 6 are centered on the annular rib R (the center of the rib R is aligned with the axis).
Therefore, both are formed to have a height such that they are in contact with a circle having a diameter slightly smaller than the outer diameter of the substantially annular rib R. The rib 5 may be a vertical rib having the same shape as the rib 6.
【００１０】本発明のフランジＦの使用に際しては、フ
ランジＦを注射器ＳのバレルＢの先端のチップＣ方向か
ら装着して、バレルＢ基端までスライドさせる。すると
バレルＢ基端の環状リブＲはフランジＦの爪片３の突条
３１を越えて円筒部１の中に進入し、係合段部４に衝突
してその更なる進入が阻止され、環状リブＲは爪片３の
突条３１と係合段部４の間に嵌め込まれる（図５、６参
照）。この状態では、通常の注射器と同様、フランジＦ
に指を掛けることができるので、プランジャーＰを押す
ことによりスムーズな注射操作が可能である。When using the flange F of the present invention, the flange F is mounted from the tip C direction at the tip of the barrel B of the syringe S and slid to the base end of the barrel B. Then, the annular rib R at the base end of the barrel B enters the cylindrical portion 1 beyond the projection 31 of the claw piece 3 of the flange F, collides with the engagement step portion 4 and is prevented from further entering, and The rib R is fitted between the protrusion 31 of the claw piece 3 and the engagement step portion 4 (see FIGS. 5 and 6). In this state, like the normal syringe, the flange F
Since a finger can be hung on, a smooth injection operation is possible by pushing the plunger P.
【００１１】[0011]
【発明の効果】以上説明してきたことから明らかなよう
に、本発明のフランジは、ストッパー部と係合段部が設
けられており、両者の間に注射器のリブを嵌め込むこと
ができるようになっており、使用中に注射器から外れる
ことがないので、医療事故を起こす虞がなくなった。ま
た、簡単な構成なので、生産性が良く、安価にフランジ
を提供することができる。As is apparent from the above description, the flange of the present invention is provided with the stopper portion and the engaging step portion, and the rib of the syringe can be fitted between them. Since it does not come off from the syringe during use, there is no risk of causing a medical accident. Further, since the structure is simple, it is possible to provide the flange with high productivity and at low cost.
【図１】 本発明のフランジの正面図である。FIG. 1 is a front view of a flange of the present invention.
【図２】 図１の背面図である。FIG. 2 is a rear view of FIG.
【図３】 図１のＸ−Ｘ線断面図である。3 is a sectional view taken along line XX of FIG.
【図４】 図１のＹ−Ｙ線断面図である。FIG. 4 is a sectional view taken along line YY of FIG.
【図５】 図１に示すフランジを注射器のバレルに装着
した状態を示す説明図である。5 is an explanatory view showing a state in which the flange shown in FIG. 1 is attached to a barrel of a syringe.
【図６】 図５の部分拡大断面図である。6 is a partially enlarged sectional view of FIG.
１ 円筒部 ２ 鍔部 ３ ストッパー部（爪片） ３１ 突条 ４ 係合段部 Ｆ フランジ Ｓ 注射器 Ｂ バレル Ｒ 環状リブ 1 cylindrical part 2 Tsuba 3 Stopper part (claw piece) 31 ridges 4 Engagement step F flange S syringe B barrel R annular rib
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) A61M 5/31 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) A61M 5/31
Claims (2)
部と、該円筒部の基端外壁に突出形成された鍔部と、円
筒部の基端部の内壁の一部を構成するように設けられた
ストッパー部からなり、該ストッパー部は、前記外筒の
環状リブが円筒部の基端方向から進入する場合にのみ、
その内径を拡径して該環状リブの進入を許すバネ弾性を
有しており、該ストッパー部に近接して円筒部先端側内
壁に、該ストッパー部を越えて進入してきた前記環状リ
ブの円筒部先端方向への移動を阻止する係合段部が設け
られてなる注射器のフランジ。1. A short cylinder portion that can be inserted into the outer wall of a syringe outer cylinder, a flange portion projectingly formed on a base end outer wall of the cylinder portion, and a part of an inner wall of the base end portion of the cylinder portion. The stopper part is provided only when the annular rib of the outer cylinder enters from the base end direction of the cylindrical part.
A cylinder of the annular rib that has a spring elasticity that expands the inner diameter to allow the annular rib to enter, and has entered the inner wall of the cylindrical portion near the distal end of the annular rib beyond the stopper portion. A flange of a syringe provided with an engagement step portion that prevents movement toward the distal end of the portion.
片持ち式に形成された一対の爪片であり、該爪片は先端
部に円筒部の先端方向内向きに傾斜して拡大する突条を
有してなる請求項１に記載のフランジ。2. The stopper portion is a pair of cantilever pieces formed in a cantilevered manner on the inner wall of the base end portion of the cylindrical portion, and the pawl pieces are enlarged at the tip end portion inclining inward in the tip end direction of the cylindrical portion. The flange according to claim 1, wherein the flange has a ridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33802096A JP3383972B2 (en) | 1996-12-18 | 1996-12-18 | Syringe flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33802096A JP3383972B2 (en) | 1996-12-18 | 1996-12-18 | Syringe flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10174718A JPH10174718A (en) | 1998-06-30 |
| JP3383972B2 true JP3383972B2 (en) | 2003-03-10 |
Family
ID=18314191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33802096A Expired - Lifetime JP3383972B2 (en) | 1996-12-18 | 1996-12-18 | Syringe flange |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3383972B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2000265941A1 (en) * | 2000-02-22 | 2001-09-03 | Chugai Seiyaku Kabushiki Kaisha | Syringe drug with plunger rod, and manufacturing method and assembly device for the syringe drug |
| JP4984644B2 (en) | 2006-05-19 | 2012-07-25 | 株式会社ジェイ・エム・エス | Injection device |
| JP2015080688A (en) * | 2013-10-24 | 2015-04-27 | 大成化工株式会社 | Fitting tool for syringe |
-
1996
- 1996-12-18 JP JP33802096A patent/JP3383972B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10174718A (en) | 1998-06-30 |
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