JP2000271221A - Syringe with luer-lock part improved in fittability - Google Patents
Syringe with luer-lock part improved in fittabilityInfo
- Publication number
- JP2000271221A JP2000271221A JP11085062A JP8506299A JP2000271221A JP 2000271221 A JP2000271221 A JP 2000271221A JP 11085062 A JP11085062 A JP 11085062A JP 8506299 A JP8506299 A JP 8506299A JP 2000271221 A JP2000271221 A JP 2000271221A
- Authority
- JP
- Japan
- Prior art keywords
- syringe
- cylindrical portion
- outer cylindrical
- luer lock
- luer
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は注射器に関し、さら
に詳細には、注射針やその他の医療器具を接続するため
のルアーロック部を有する注射器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a syringe, and more particularly to a syringe having a luer lock for connecting a syringe needle or other medical device.
【０００２】[0002]
【従来の技術】医療施設では、患者に少量の薬液をワン
ショットで投与する場合、注射器を使用することが多
い。その際、患者体内に液を注入するため、注射器に針
や翼状針等の投与手段を接続する必要があり、この接続
のために注射器先端部はルアー部か、ルアーロック部の
いずれかが形成されている。ルアーの形成された注射器
は、投与手段の接続や脱離は簡単であるが、逆に両者が
しっかりと嵌着されていないと、使用時に外れる恐れが
あった。そのため、注射器接続部に両者を確実に螺合で
きるルアーロックも用途に応じて多く使用されてきた。2. Description of the Related Art In a medical facility, a syringe is often used when a small amount of a drug solution is administered to a patient in one shot. At that time, in order to inject the liquid into the patient's body, it is necessary to connect an injection means such as a needle or a winged needle to the syringe, and for this connection, the tip of the syringe is formed with either a luer part or a luer lock part. Have been. The syringe with the lure is easy to connect and disconnect the administration means, but if both are not firmly fitted, there is a risk that the syringe will come off during use. For this reason, luer locks that can be securely screwed into the syringe connection portion have been frequently used depending on the application.
【０００３】ところが、従来のルアーロックを形成した
注射器では、以下のような欠点があった。医療施設では
ディスポーザブル注射器が多く使用され、このディスポ
ーザブル注射器はポリプロピレン等の合成樹脂で形成さ
れる。そして、従来の注射器のルアーロック部は外側円
筒部に螺旋状突条が形成され、注射針の接続基端部に形
成された螺条突起と螺合して投与手段（以下、接続部材
ともいう）と注射器をロックさせることができる。この
とき、注射器にしっかりと螺合させるため、注射針を限
度まで回転させてきつく締め付けようとしても、外側円
筒部が合成樹脂で形成されているため、外側円筒部が外
側に膨らみ、螺旋状突条に対して前記螺条突起が空まわ
り（滑る）して、堅い螺合ができないという問題があっ
た。[0003] However, the conventional syringe having a luer lock has the following disadvantages. Medical facilities often use disposable syringes, which are made of synthetic resin such as polypropylene. The luer lock portion of the conventional syringe has a spiral ridge formed on the outer cylindrical portion, and is screwed with a screw protrusion formed on the connection base end of the injection needle to administer the administration means (hereinafter also referred to as a connection member). ) And the syringe can be locked. At this time, the outer cylindrical portion is formed of synthetic resin, so that the outer cylindrical portion bulges outward, and the helical protrusion is formed, even if the syringe needle is rotated to the limit and tightly tightened in order to securely screw into the syringe. There is a problem that the screw projections idle (slip) with respect to the strip, and a tight screw cannot be formed.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は簡易な
構造によって上記欠点を解決することであり、第１に嵌
合性の改善・向上であり、第２に従来のルアーロックを
大きく変更しないで、嵌合性の向上を図ることにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks by a simple structure. First, it is an improvement and improvement of the fitting property, and secondly, the conventional luer lock is largely changed. Instead, the object is to improve the fitting property.
【０００５】[0005]
【課題を解決するための手段】本発明では、ルアーロッ
ク部の一部分である外側円筒部の外側表面（内側円筒部
に対面する側の外側円筒部表面を内側表面、その反対側
にある表面を外側表面と称する）に、筋状のリブを外側
円筒部軸に平行になるように形成することによって、外
側円筒部の外方向への膨らみを抑止し、注射器と接続部
材との螺合の際の滑りを防止した。According to the present invention, the outer surface of the outer cylindrical portion which is a part of the luer lock portion (the outer cylindrical surface facing the inner cylindrical portion is defined as the inner surface, and the surface on the opposite side is defined as the inner cylindrical portion). On the outer surface), a streak-like rib is formed so as to be parallel to the axis of the outer cylindrical portion, so that the outward expansion of the outer cylindrical portion is suppressed, and when the syringe and the connecting member are screwed together. Prevented slippage.
【０００６】即ち、本発明は注射器の一端に形成された
接続部を有する注射器において、該接続部が内側円筒部
および外側円筒部で構成され、前記内側円筒部は先細の
ルアーに形成されてなり、前記外側円筒部はその内側表
面に螺旋状突条が形成され、その外側表面に外側円筒部
の軸に平行な筋状突起が形成されていることを特徴とす
るルアーロック部を設けた注射器であり、上記構成によ
って既述した課題を解決した。That is, the present invention relates to a syringe having a connecting portion formed at one end of a syringe, wherein the connecting portion is formed of an inner cylindrical portion and an outer cylindrical portion, and the inner cylindrical portion is formed in a tapered luer. A syringe provided with a luer lock, wherein a spiral ridge is formed on an inner surface of the outer cylindrical portion, and a streaky protrusion parallel to an axis of the outer cylindrical portion is formed on an outer surface of the outer cylindrical portion. The above-mentioned configuration has solved the above-mentioned problem.
【０００７】[0007]
【発明の実施の形態】以下に、本発明の１つの実施例を
図とともにより詳細に説明する。図１において、本発明
の注射器１は、主にガスケット２を装着したプランジャ
ー部３、プランジャーがその内部を摺動して液を注入す
る外筒４、とから構成され、外筒先端にルアーロック部
が形成されている。ルアーロック部には患者体内へ薬液
を投与するための投与手段として、注射針５が螺合によ
って嵌着される。ルアーロック部は外側円筒部６と内側
円筒部７から構成され、内側円筒部７は注射針等のテー
パー付きの雌ルアーに嵌合できるように、先細テーパー
の付いた雄ルアーに形成されている（以下は、図３によ
り詳細に示す）。内側円筒部の周囲には、注射針等の接
続部材の基端部が螺合できるように所定の間隔をおい
て、外側円筒部６が形成されている。外側円筒部６の内
側表面には、螺旋状突条８が形成され、外側円筒部の外
側表面に外側円筒部軸に平行な筋状突起９が複数形成さ
れている。内側円筒部７は外側円筒部６より長く延出さ
れているので、注射器に接続部材を接続し易くなってい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. In FIG. 1, a syringe 1 of the present invention mainly comprises a plunger part 3 on which a gasket 2 is mounted, and an outer cylinder 4 in which the plunger slides inside to inject a liquid. A luer lock is formed. An injection needle 5 is screwed into the luer lock as an administration means for administering a drug solution into a patient. The luer lock portion includes an outer cylindrical portion 6 and an inner cylindrical portion 7, and the inner cylindrical portion 7 is formed as a tapered male luer so that it can be fitted to a tapered female luer such as an injection needle. (The following is shown in more detail in FIG. 3). An outer cylindrical portion 6 is formed around the inner cylindrical portion at a predetermined interval so that a base end portion of a connecting member such as an injection needle can be screwed therein. A spiral ridge 8 is formed on the inner surface of the outer cylindrical portion 6, and a plurality of streaks 9 parallel to the outer cylindrical portion axis are formed on the outer surface of the outer cylindrical portion. Since the inner cylindrical portion 7 extends longer than the outer cylindrical portion 6, it is easy to connect the connecting member to the syringe.
【０００８】注射器外筒およびルアーロック部の材質
は、耐熱性、成形性、溶出性、安全性、コスト等の点か
ら、ポリオレフィンやポリエステル等の合成樹脂が選択
されるが、特にポリプロピレンが好ましい。The material of the syringe barrel and the luer lock portion is selected from synthetic resins such as polyolefin and polyester from the viewpoints of heat resistance, moldability, dissolution property, safety, cost and the like, but polypropylene is particularly preferred.
【０００９】本発明においては、上記の構成に要件を付
加して以下のような実施態様を取ることができ、それに
よって様々な利点を有する。第１に、前記筋状突起が少
なくとも３個以上形成され、それらの筋状突起の幅（図
２において示されるＷ１）が実質的に同じである前記の
注射器である。外側円筒部に少なくとも３個以上の筋状
突起を形成しなければ、外側円筒部にかかる外側への力
を効果的に抑止できない。また、幅の同じ筋状突起を形
成することによって、外側円筒部にかかる外周方向への
膨らみが均一に防止される。In the present invention, the following configuration can be adopted by adding requirements to the above-described configuration, thereby having various advantages. First, there is provided the syringe wherein at least three or more streaks are formed, and the widths of the streaks (W1 shown in FIG. 2) are substantially the same. Unless at least three or more streaks are formed on the outer cylindrical portion, the outward force applied to the outer cylindrical portion cannot be effectively suppressed. Further, by forming the streaky projections having the same width, the swelling of the outer cylindrical portion in the outer peripheral direction is uniformly prevented.
【００１０】第２に、前記筋状突起が４〜１０個形成さ
れている前記の注射器である。筋状突起の膨張抑止効果
は、外側円筒部に形成する個数或いは幅、肉厚（図２に
おいて示されるＤ１）等によって影響されるが、４〜１
０個の筋状突起を形成すると、前記抑止効果を有する幅
や肉厚の範囲を広げることができる。[0010] Secondly, there is the above-mentioned syringe in which 4 to 10 streaks are formed. The effect of suppressing the expansion of the streak-like projections is affected by the number, width, thickness (D1 shown in FIG. 2) and the like formed on the outer cylindrical portion.
When zero streaks are formed, the range of the width and the thickness having the deterrent effect can be widened.
【００１１】第３に、前記筋状突起が、前記外側円筒部
の外表面に実質的に同じ間隔（図２において示されるＷ
２）をあけて形成された前記の注射器である。筋状突起
を外側円筒部の外周に均等に配置することによって、外
周方向への膨らみを均一に防止することができる。Third, the streak-like projections are arranged at substantially the same intervals on the outer surface of the outer cylindrical portion (W W shown in FIG. 2).
This is the above-mentioned syringe formed by opening 2). By arranging the streak-like projections evenly on the outer circumference of the outer cylindrical portion, it is possible to prevent the expansion in the outer circumference direction uniformly.
【００１２】第４に、前記筋状突起の幅が、前記外側円
筒部の外側円周長の１／６〜１／２０である前記の注射
器である。筋状突起の幅を大きくしても、側円筒部の径
が大きくなるだけで膨張抑止効果が効果的に得られな
い。逆にこの幅が小さ過ぎても成形（製造）し難い、充
分な膨張抑止効果が得られないという欠点を有する。Fourthly, in the above-mentioned syringe, the width of the streaky projection is 1/6 to 1/20 of the outer circumferential length of the outer cylindrical portion. Even if the width of the streak-like projection is increased, the expansion suppressing effect cannot be effectively obtained only by increasing the diameter of the side cylindrical portion. Conversely, if the width is too small, molding (manufacturing) is difficult, and there is a disadvantage that a sufficient expansion suppressing effect cannot be obtained.
【００１３】第５に、前記筋状突起の軸方向の長さ（図
３において示されるＬ）が、前記外側円筒部のそれと同
じである前記の注射器である。筋状突起の長さが短か過
ぎると、効果的に膨張を抑止できず、また長過ぎても製
造し難く邪魔になるだけである。Fifth, there is provided the syringe wherein the axial length of the streak projection (L shown in FIG. 3) is the same as that of the outer cylindrical portion. If the length of the streak is too short, the expansion cannot be effectively suppressed, and if it is too long, it is difficult to manufacture and only hinders.
【００１４】第６に、前記筋状突起の肉厚Ｄ１が、前記
外側円筒部の平均肉厚Ｄ２（図２）の１／６〜１．０倍
である前記注射器である。前記筋状突起の肉厚が大き過
ぎると、形成しにくくなり、逆に肉厚が小さ過ぎると、
充分な膨張抑止効果が得られないという欠点を有する。Sixth, there is provided the syringe wherein the thickness D1 of the streak projection is 1/6 to 1.0 times the average thickness D2 (FIG. 2) of the outer cylindrical portion. If the thickness of the streak is too large, it is difficult to form, and if the thickness is too small,
There is a disadvantage that a sufficient expansion suppressing effect cannot be obtained.
【００１５】[0015]
【実施例】次に、本発明における望ましい実施例につい
て述べる。図２はルアーロック部を接続部材の挿入方向
からみたものであり、筋状突起の個数は８個であり、突
起の幅は実質的に同じで外側円筒部外周の約１／１６で
あり、突起と突起の間隔もほぼ同じである。また、筋状
突起の肉厚は外側円筒部の平均肉厚の１／５である。図
３はルアーロック部を側面方向からみたものであり、筋
状突起は外側円筒部の長さと同じになっている。内側円
筒部は外側円筒部より、その全長の２／３が先端方向に
延出され、注射針等の接続部材を接続し易くなってい
る。Next, a preferred embodiment of the present invention will be described. FIG. 2 is a view of the luer lock portion viewed from the insertion direction of the connecting member. The number of the streaked protrusions is eight, and the widths of the protrusions are substantially the same and about 1/16 of the outer circumference of the outer cylindrical portion. The distance between the protrusions is almost the same. The thickness of the streak-like projection is 1/5 of the average thickness of the outer cylindrical portion. FIG. 3 is a side view of the luer lock portion, and the streak-like projection has the same length as the outer cylindrical portion. The inner cylindrical portion is extended from the outer cylindrical portion by ／ of the entire length thereof in the distal direction, so that it is easy to connect a connecting member such as an injection needle.
【００１６】[0016]
【発明の効果】本発明の注射器では、接続部材を外筒の
ルアーロック部に螺合によって強力に嵌着した場合で
も、滑り（空回り）が起こらず、強い接続が可能とな
る。また、本発明の注射器は簡単な構造によって、接続
部材による外側への膨張を効果的に抑止することができ
る。According to the syringe of the present invention, even when the connecting member is strongly fitted to the luer lock portion of the outer cylinder by screwing, slipping (idling) does not occur and a strong connection is possible. Further, the syringe according to the present invention can effectively prevent outward expansion by the connecting member with a simple structure.
【図１】本発明の１実施例の全体概要を示す概略図。FIG. 1 is a schematic diagram showing an overall outline of one embodiment of the present invention.
【図２】本発明のルアーロック部を、接続部材の接続方
向からみた拡大概略図。FIG. 2 is an enlarged schematic view of the luer lock of the present invention as viewed from a connection direction of a connection member.
【図３】前記ルアーロック部を側面方向からみた拡大概
略図。FIG. 3 is an enlarged schematic view of the luer lock section viewed from a side.
１．注射器 ２．ガスケット ３．プランジャー部 ４．外筒 ５．注射針 ６．外側円筒部 ７．内側円筒部 ８．螺旋状突条 ９．筋状突起 Ｗ１．筋状突起の幅 Ｗ２．筋状突起同士の間隔 Ｄ１．筋状突起の肉厚 Ｄ２．外側円筒部の肉厚 Ｌ．筋状突起の長さ 1. Syringe 2. Gasket 3. Plunger part 4. Outer cylinder 5. Injection needle 6. Outer cylindrical part 7. 7. Inner cylindrical part Spiral ridge 9. Streaks W1. Width of streaks W2. Spacing between streaks D1. Thickness of streaks D2. Outer cylindrical wall thickness L. Streak length
Claims (7)
注射器において、該接続部が内側円筒部および外側円筒
部で構成され、前記内側円筒部は先細のルアーに形成さ
れてなり、前記外側円筒部はその内側表面に螺旋状突条
が形成され、その外側表面に外側円筒部の軸に平行な筋
状突起が形成されていることを特徴とするルアーロック
部を設けた注射器。1. A syringe having a connection portion formed at one end of a syringe, wherein the connection portion comprises an inner cylindrical portion and an outer cylindrical portion, wherein the inner cylindrical portion is formed in a tapered luer, and A syringe provided with a luer lock, wherein a spiral projection is formed on the inner surface of the cylindrical portion, and a streak projection parallel to the axis of the outer cylindrical portion is formed on the outer surface.
れ、それらの筋状突起の幅は実質的に同じである請求項
１に記載のルアーロック部を設けた注射器。2. A syringe provided with a luer lock according to claim 1, wherein at least three or more streaks are formed, and the widths of the streaks are substantially the same.
請求項２に記載のルアーロック部を設けた注射器。3. The syringe according to claim 2, wherein 4 to 10 streaks are formed.
に実質的に同じ間隔をあけて形成された請求項２または
３のいずれかに記載のルアーロック部を設けた注射器。4. A syringe provided with a luer lock according to claim 2, wherein said streaks are formed on the outer surface of said outer cylindrical portion at substantially equal intervals.
側円周長の１／６〜１／２０である請求項１〜４記載の
いずれかに記載のルアーロック部を設けた注射器。5. The luer lock according to claim 1, wherein a width of the streak-like projection is 1/6 to 1/20 of an outer circumferential length of the outer cylindrical portion. Syringe.
軸方向長さと同じである請求項１〜５記載のいずれかに
記載のルアーロック部を設けた注射器。6. The syringe provided with a luer lock according to claim 1, wherein the length of the streak-like projection is the same as the length of the outer cylindrical portion in the axial direction.
部の平均肉厚Ｄ２の１／６〜１．０倍である請求項１〜
６記載のいずれかに記載のルアーロック部を設けた注射
器。7. A thickness D1 of the streak-like projection is 1/6 to 1.0 times an average thickness D2 of the outer cylindrical portion.
A syringe provided with a luer lock according to any one of claims 6 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11085062A JP2000271221A (en) | 1999-03-29 | 1999-03-29 | Syringe with luer-lock part improved in fittability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11085062A JP2000271221A (en) | 1999-03-29 | 1999-03-29 | Syringe with luer-lock part improved in fittability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000271221A true JP2000271221A (en) | 2000-10-03 |
Family
ID=13848160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11085062A Pending JP2000271221A (en) | 1999-03-29 | 1999-03-29 | Syringe with luer-lock part improved in fittability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000271221A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040039233A (en) * | 2004-04-09 | 2004-05-10 | 박순 | A spiral syringe for safety |
| JP2019534076A (en) * | 2016-10-07 | 2019-11-28 | ベクトン・ディキンソン・アンド・カンパニーＢｅｃｔｏｎ， Ｄｉｃｋｉｎｓｏｎ Ａｎｄ Ｃｏｍｐａｎｙ | Syringe with connector |
| JP2020162712A (en) * | 2019-03-28 | 2020-10-08 | テルモ株式会社 | Syringe, syringe assembly, and pre-filled syringe |
-
1999
- 1999-03-29 JP JP11085062A patent/JP2000271221A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040039233A (en) * | 2004-04-09 | 2004-05-10 | 박순 | A spiral syringe for safety |
| JP2019534076A (en) * | 2016-10-07 | 2019-11-28 | ベクトン・ディキンソン・アンド・カンパニーＢｅｃｔｏｎ， Ｄｉｃｋｉｎｓｏｎ Ａｎｄ Ｃｏｍｐａｎｙ | Syringe with connector |
| JP7109431B2 (en) | 2016-10-07 | 2022-07-29 | ベクトン・ディキンソン・アンド・カンパニー | syringe with connector |
| JP2020162712A (en) * | 2019-03-28 | 2020-10-08 | テルモ株式会社 | Syringe, syringe assembly, and pre-filled syringe |
| JP7234003B2 (en) | 2019-03-28 | 2023-03-07 | テルモ株式会社 | Syringe, syringe assembly and prefilled syringe |
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