JP4118399B2 - Puncture adjusting tool for injection needle and injection needle assembly including the same - Google Patents

Puncture adjusting tool for injection needle and injection needle assembly including the same Download PDF

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JP4118399B2
JP4118399B2 JP20476298A JP20476298A JP4118399B2 JP 4118399 B2 JP4118399 B2 JP 4118399B2 JP 20476298 A JP20476298 A JP 20476298A JP 20476298 A JP20476298 A JP 20476298A JP 4118399 B2 JP4118399 B2 JP 4118399B2
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injection needle
puncture
tool
injection
adjustment tool
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JP2000037456A (en
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徹 久保田
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TRUMO KABUSHIKI KAISHA
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TRUMO KABUSHIKI KAISHA
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Description

【０００１】
【発明の属する技術分野】
本発明は、目標とする深さより深く穿刺することを防ぐ注射針用穿刺調整具およびそれを備えた注射針組立体に関する。
【０００２】
【従来の技術】
ワクチン等を投与する予防接種の多くは皮下注射により行われるが、小児はじっとせずに動き、また皮膚が柔らかいため、大人に使用する通常の長さの注射針を穿刺する際に目標とする深さで止めることが難しく、目標とする深さより深く穿刺し筋肉注射になり苦痛を与えるおそれがある。また、研究や実験に使用する小動物や魚等に薬剤を投与する際に通常の注射針を使用すると長すぎ、また小動物や魚等は小さくかつ動きまわるため、深く刺してしまい臓器等を傷付けるおそれがある。
【０００３】
そこで、これらの問題点を解消するべく、注射針を単純に短くしハブに固定した注射針組立体が考えられるが、通常の注射針は先端の刃面を有する部位の長さだけでも２ｍｍ前後あるため、注射針のハブに固定されない部分が数ｍｍの長さの注射針組立体を作製すると、注射針とハブの接着面からはみ出た接着剤が注射針の先端まで達して開口部から注射針内へ侵入するおそれがある。また、先端の刃面を有する部位が短い注射針を作製すると先端が尖っていない注射針となり、穿刺する際に苦痛を伴うか穿刺できない注射針となってしまう。
【０００４】
【発明が解決しようとする課題】
本発明は上述した従来の技術の問題点を鑑みて、注射針が、小児への予防接種時に確実に皮下に穿刺しそれ以上深く刺さらず、研究や実験に使用する小動物や魚等に穿刺しても必要以上深く刺さらず、その他の穿刺の際にも必要以上深く刺さらずに使用できるための注射針用穿刺調整具、およびそれを備えた注射針組立体を提供することにある。
【０００５】
【課題を解決するための手段】
上記課題は、以下の本発明によって解決される。
（１）本発明は、注射針ハブまたは注射針のいずれかに設けられ、表皮に当接させることにより、当該注射針を穿刺する深さを目標とする深さに調整することができる注射針用穿刺調整具である。
（２）本発明は、筒体であって、前記注射針と同軸方向に延び、前記注射針をその内部に有し、かつ一端が前記注射針ハブに固定されることを特徴とする上記（１）に記載の注射針用穿刺調整具である。
【０００６】
（３）上記（２）に記載の筒体の注射針用穿刺調整具であって、当該注射針用穿刺調整具の他端から前記注射針の針先が突出することを特徴とする注射針用穿刺調整具である。
（４）上記（２）に記載の筒体の注射針用穿刺調整具であって、当該注射針用穿刺調整具の他端から前記皮下注射針の針先が突出しないことを特徴とする注射針用穿刺調整具である。
【０００７】
（５）注射針ハブまたは注射針のいずれかに設けられ、表皮に当接させることにより、当該注射針を穿刺する深さを目標とする深さに調整することができる注射針用穿刺調整具を備えた注射針組立体である。
（６）筒体であって、前記皮下注射針と同軸方向に延び、前記皮下注射針をその内部に有し、かつ一端が前記注射針ハブに固定された注射針用穿刺調整具を有する上記（５）に記載の注射針用穿刺調整具を備えた注射針組立体である。
【０００８】
（７）上記（６）に記載の注射針用穿刺調整具を備えた注射針組立体であって、当該注射針用穿刺調整具の他端から前記注射針の針先が突出することを特徴とする注射針用穿刺調整具を備えた注射針組立体である。
（８）上記（６）に記載の注射針用穿刺調整具を備えた注射針組立体であって、当該注射針用穿刺調整具の他端から前記皮射針の針先が突出しないことを特徴とする注射針用穿刺調整具を備えた注射針組立体である。
【０００９】
【発明の実施の形態】
以下、図面を参照しながら本発明について説明する。
［１］図１は本発明の実施の形態の一例である注射針組立体１および注射針用穿刺調整具２を示す部分断面図である。注射針組立体１は、注射針用穿刺調整具２、注射針３およびハブ４から構成される。本実施の形態において注射針用穿刺調整具２の形状は外観図である図２に示すとおりの円筒状であるが、特に限定されず、断面形状が三角形、四角形、その他多角形の筒体であってもよく、また部分的に断面形状が変化し、その一部がいずれかの形状となるものでもよい。また、一方の端に向かって径が小さくなる形状等であってもよい。さらに、蛇腹状構造体、伸縮可能な多管構造体などの伸縮可能なものであってもよい。
【００１０】
注射針組立体１において、注射針用穿刺調整具２の長さは接続部５で固定された状態で注射針３の先端が注射針用穿刺調整具２から突出できる長さを有する。注射針用穿刺調整具２が、上述する蛇腹状構造体、伸縮可能な多管構造体などの場合は、使用前に注射針３の先端が注射針用穿刺調整具２から突出できる長さに調整して使用すればよい。なお、注射針用穿刺調整具２の具体的な長さは、使用目的によって、穿刺する深さを考慮して選択できるが、穿刺する深さを比較的浅めに設定する場合は、後述する別の実施の形態の注射針組立体１１および注射針用穿刺調整具１２を用いることが望ましい。また、ハブと接合する場合には一端にテーパー部２１を設けることが望ましい。
【００１１】
注射針用穿刺調整具２の材質は特に限定しないが、注射針を確認できる程度の透明性を有するプラスチック樹脂が望ましく、例えば、ポリエチレン、ポリプロピレンなどのポリオレフィン、ポリスチレン、ポリカーボネート、ポリメチルペンテン、メタクリル樹脂、塩化ビニル樹脂、ポリエチレンテレフタレートなどのポリエステル樹脂など、およびこれらの混合物が使用できる。高圧蒸気滅菌、ＥＯＧ滅菌、ガンマー線滅菌などの各種滅菌に耐えることができるものが望ましい。
【００１２】
注射針３およびハブ４は、市販されているものでよく、シリンジなど注射装置に接続可能なものであれば特に限定しない。注射針用穿刺調整具２とハブ４は、注射針用穿刺調整具２を別体として使用前に接続部５にて嵌め込んで固定するものでも、予め注射針用穿刺調整具２とハブ４を接続部５にて接着、融着により固定させたものであってもよい。
【００１３】
次に、注射針組立体１および注射針用穿刺調整具２の使用方法について説明する。図３の部分断面図に示すように、皮膚に対しほぼ垂直に注射針３を穿刺し、注射針用穿刺調整具２の一端が表皮に達するまで刺し込む。注射針用穿刺調整具２の一端が表皮に達した位置が目標とする穿刺の深さとなる。穿刺する深さは場合によってことなるが、０.１〜５ｍｍである。その後、ハブ４に接続したシリンジ等の注射装置（図示しない）により薬剤等を注入する。
【００１４】
［２］図４は本発明の実施の形態の一例である注射針組立体１１および注射針用穿刺調整具１２を示す部分断面図である。注射針組立体１１は、注射針用穿刺調整具１２、注射針１３およびハブ１４から構成される。本実施の形態において注射針用穿刺調整具１２の形状は、上述した実施の形態の注射針用穿刺調整具２と同様な形状である。
【００１５】
注射針組立体１１において、注射針用穿刺調整具１２の長さは接続部１５で固定された状態で注射針１３の先端が注射針用穿刺調整具２から突出しない長さを有する。注射針用穿刺調整具１２が、蛇腹状構造体、釣竿のような多管構造体などの場合は、使用前に注射針１３の先端が注射針用穿刺調整具１２から突出しない長さに調整して使用すればよい。なお、注射針用穿刺調整具１２の具体的な長さは、使用目的によって、穿刺する深さを考慮して選択できるが、穿刺する深さを比較的深めに設定する場合は、上述した実施の形態の注射針組立体１および注射針用穿刺調整具２を用いることが望ましい。
【００１６】
注射針用穿刺調整具１２の材質、注射針１３およびハブ１４は、上述した実施の形態の注射針用穿刺調整具２の材質、注射針３およびハブ４と同様でよく、接続部１５の固定方法も上述した実施の形態の接続部５と同様でよい。
【００１７】
次に、注射針組立体１１および注射針用穿刺調整具１２の使用方法について説明する。図５の部分断面図に示すように、皮膚に対しほぼ垂直に注射針用穿刺調整具１２を強く当てると、注射針用穿刺調整具１２に接していない部分の表皮が山状に膨らみ注射針１３に刺さる。山状に膨らんだ表皮の高さの位置が目標とする穿刺の深さとなる。穿刺する深さは場合によってことなるが、０.０５〜３ｍｍである。その後、ハブ１４に接続したシリンジ等の注射装置（図示しない）により薬剤等を注入する。
【００１８】
［３］図６は本発明の実施の形態の一例である注射針組立体２１および注射針用穿刺調整具２２ａを示す外観図である。注射針組立体２１は、注射針用穿刺調整具２２ａ、注射針２３およびハブ２４から構成される。本実施の形態において注射針用穿刺調整具２２ａの形状は、外観図である図７に示すように円盤状であるが、特に限定されず、三角形、四角形、その他多角形の板体であってもよく、また、ハブ２４から所定の位置まで延びる長さを有する筒体であってもよい。さらには、図８に示すようなクリップ状のもの（注射針用穿刺調整具２２ｂ）や、洗濯挟み状のものでよい。
【００１９】
注射針用穿刺調整具２２ａには注射針２３を通すための孔２５ａが設けられる。孔２５の径は注射針２３の径と同径か、注射針用穿刺調整具２２ａが柔軟性を有する材料から構成される場合は小さい径でもよい。注射針用穿刺調整具２２ａの位置は、使用目的によって、穿刺する深さを考慮して、注射針２３の先端が突出する位置に設ければよい。
【００２０】
注射針用穿刺調整具２２ｂには注射針２３を通すための溝２５ｂとそれを介して注射針２３が嵌め込まれる孔２５ｃが設けられる。孔２５ｃの径は注射針２３の径と同径か、注射針用穿刺調整具２２ｂが柔軟性を有する材料から構成される場合は小さい径でもよい。溝２５ｂは注射針２３を孔２５ｃに嵌め込む際に注射針２３が通れる範囲で開けるものであればよい。注射針用穿刺調整具２２ｂの位置は、使用目的によって、穿刺する深さを考慮して、注射針２３の先端が突出する位置に設ければよい。
【００２１】
注射針用穿刺調整具２２ａおよび２２ｂの材質は特に限定する必要はなく、硬質のもの、軟質のものを適選使用できる。硬質のものとしては、金属や硬質のプラスチック樹脂があげられ、硬質のプラスチック樹脂としては、例えば、ポリエチレン、ポリプロピレンなどのポリオレフィン、ポリスチレン、ポリカーボネート、ポリメチルペンテン、メタクリル樹脂、塩化ビニル樹脂、ポリエチレンテレフタレートなどのポリエステル樹脂など、およびこれらの混合物が使用できる。また、軟質のものとしては、例えば、天然ゴム、ブチルゴム、イソプレンゴム、ブタジエンゴム、スチレン−ブタジエンゴム、シリコ−ンゴムのような各種ゴム材料（特に加硫処理したもの）や、ポリウレタン系、ポリエステル系、ポリアミド系、オレフィン系、スチレン系等の各種エラストマー、あるいはそれらの混合物等などのシリンジのガスケットとして使用できるものがあげられる。いずれにおいても、高圧蒸気滅菌、ＥＯＧ滅菌、ガンマー線滅菌などの各種滅菌に耐えることができるものが望ましい。
【００２２】
注射針２３およびハブ２４は、市販されているものでよく、シリンジなど注射装置に接続可能なものであれば特に限定しない。注射針用穿刺調整具２２ａと注射針２３は、注射針用穿刺調整具２２ａを別体として使用前に孔２５ａに注射針２３を通してもよく、予め注射針用穿刺調整具２２ａと注射針２３を接着、融着により固定させたものであってもよく、さらに注射針用穿刺調整具２２ａが金属である場合には注射針２３と一体成形してもよい。注射針用穿刺調整具２２ｂと注射針２３は、注射針用穿刺調整具２２ｂを別体として使用前、溝２５ｂを介して孔２５ｃに注射針２３を嵌め込んでもよく、予め注射針用穿刺調整具２２ｂに注射針２３を上述した方法によって嵌め込んだ後に接着、融着により固定させたものであってもよい。なお、注射針用穿刺調整具２２ａおよび２２ｂを別体として用いる場合には、注射針２３との接触面は上述した軟質の材料で構成されることが、ズレ防止のため望ましい。
【００２３】
次に、注射針組立体２１および注射針用穿刺調整具２２ａおよび２２ｂの使用方法について説明する。皮膚に対しほぼ垂直に注射針２３を穿刺し、注射針用穿刺調整具２２ａおよび２２ｂの一端が表皮に達するまで刺し込む。注射針用穿刺調整具２２の一端が表皮に達した位置が目標とする穿刺の深さとなる。その後、ハブ２４に接続したシリンジ等の注射装置（図示しない）により薬剤等を注入する。
【００２４】
【発明の効果】
本発明の注射針用穿刺調整具およびそれを備えた注射針組立体により、注射針を目標とする深さに穿刺することができる。特に、本発明の注射針用穿刺調整具およびそれを備えた注射針組立体を、小児へワクチン等を皮下に注射する予防接種時に使用すると、確実に皮下に穿刺し、それ以上深く刺さらないため筋肉等まで達することがなく、苦痛を与えることなく安全に予防接を行うことができるため有効である。また、研究や実験に使用する小動物や魚等に穿刺しても必要以上深く刺さらず、臓器等を傷めることがないため正確な研究結果や実験結果を得ることができるため有効である。
【図面の簡単な説明】
【図１】本発明の実施の形態の一例である注射針組立体１および注射針用穿刺調整具２を示す部分断面図である。
【図２】注射針用穿刺調整具２の外観図である。
【図３】注射針組立体１および注射針用穿刺調整具２の使用形態を示す部分断面図である。
【図４】本発明の実施の形態の一例である注射針組立体１１および注射針用穿刺調整具１２を示す部分断面図である。
【図５】注射針組立体１１および注射針用穿刺調整具１２の使用形態を示す部分断面図である。
【図６】本発明の実施の形態の一例である注射針組立体２１および注射針用穿刺調整具２２を示す外観図である。
【図７】注射針用穿刺調整具２２ａの外観図である。
【図８】注射針用穿刺調整具２２ｂの外観図である。
【符号の説明】
１，１１，２１・・・注射針組立体
２，１２，２２・・・注射針用穿刺調整具
２１・・・テーパー部
３，１３，２３・・・注射針
４，１４，２４・・・ハブ
５．１５・・・接続部
２５ａ，２５ｃ・・・孔
２５ｂ・・・溝[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a puncture adjusting tool for an injection needle that prevents puncturing deeper than a target depth, and an injection needle assembly including the same.
[0002]
[Prior art]
Most vaccinations to administer vaccines, etc., are performed by subcutaneous injection, but children move without sting and the skin is soft, so it is the target when puncturing a normal length needle used for adults It is difficult to stop at the depth, and there is a risk of puncturing deeper than the target depth, resulting in intramuscular injection and causing pain. In addition, if a normal injection needle is used to administer drugs to small animals or fish used in research or experiments, it is too long, and small animals and fish are small and move around, so they may pierce deeply and damage organs. There is.
[0003]
Therefore, in order to solve these problems, an injection needle assembly in which the injection needle is simply shortened and fixed to the hub is conceivable. However, a normal injection needle has a length of a portion having a blade surface at the tip of about 2 mm. Therefore, when making a syringe needle assembly with a length of several millimeters that is not fixed to the hub of the syringe needle, the adhesive protruding from the adhesive surface of the syringe needle and the hub reaches the tip of the syringe needle and is injected from the opening. There is a risk of entering the needle. In addition, if an injection needle having a short tip portion is prepared, the injection needle has a sharp tip, and the injection needle is painful or cannot be punctured.
[0004]
[Problems to be solved by the invention]
In view of the above-mentioned problems of the prior art, the present invention ensures that the injection needle punctures a small animal or fish used for research or experiments without failing to puncture under the skin and prevent further penetration. However, it is an object of the present invention to provide a puncture adjusting tool for an injection needle that can be used without being deeply pierced more than necessary and without piercing deeper than necessary during other punctures, and an injection needle assembly including the same.
[0005]
[Means for Solving the Problems]
The above problems are solved by the present invention described below.
(1) The present invention is an injection needle that is provided on either the injection needle hub or the injection needle, and can adjust the depth of puncture of the injection needle to a target depth by contacting the epidermis. It is a puncture adjustment tool for use.
(2) The present invention is a cylindrical body, extends in the same direction as the injection needle, has the injection needle therein, and has one end fixed to the injection needle hub. A puncture adjusting device for an injection needle according to 1).
[0006]
(3) The injection needle puncture adjustment tool for a cylindrical body according to (2), wherein the needle tip of the injection needle projects from the other end of the injection needle puncture adjustment tool. It is a puncture adjustment tool for use.
(4) The injection needle puncture adjustment tool for a cylindrical body according to (2), wherein the needle tip of the hypodermic needle does not protrude from the other end of the needle puncture adjustment tool. This is a needle puncture adjustment tool.
[0007]
(5) A puncture adjustment tool for an injection needle, which is provided on either the injection needle hub or the injection needle, and can adjust the depth of puncture of the injection needle to a target depth by contacting the epidermis Is a syringe needle assembly.
(6) A cylindrical body that includes a hypodermic needle puncture adjustment tool that extends coaxially with the hypodermic needle, has the hypodermic needle therein, and has one end fixed to the hypodermic hub. An injection needle assembly comprising the injection needle puncture adjusting tool according to (5).
[0008]
(7) An injection needle assembly comprising the injection needle puncture adjustment device according to (6), wherein the needle tip of the injection needle protrudes from the other end of the injection needle puncture adjustment device. An injection needle assembly provided with a needle puncture adjusting tool.
(8) An injection needle assembly comprising the injection needle puncture adjustment tool according to (6), wherein the needle tip of the skin needle does not protrude from the other end of the injection needle puncture adjustment tool. It is an injection needle assembly provided with the puncture adjustment tool for injection needles characterized.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings.
[1] FIG. 1 is a partial cross-sectional view showing an injection needle assembly 1 and an injection needle puncture adjusting device 2 as an example of an embodiment of the present invention. The injection needle assembly 1 includes an injection needle puncture adjusting tool 2, an injection needle 3, and a hub 4. In the present embodiment, the shape of the puncture adjusting device 2 for an injection needle is a cylindrical shape as shown in FIG. 2 which is an external view, but is not particularly limited, and is a cylinder having a triangular, quadrilateral or other polygonal cross-sectional shape. The cross-sectional shape may partially change, and a part thereof may have any shape. Moreover, the shape etc. which a diameter becomes small toward one end may be sufficient. Further, it may be stretchable such as a bellows-like structure or a stretchable multi-tubular structure.
[0010]
In the injection needle assembly 1, the length of the injection needle puncture adjustment tool 2 is such that the tip of the injection needle 3 can protrude from the injection needle puncture adjustment tool 2 while being fixed by the connecting portion 5. When the injection needle puncture adjusting tool 2 is the above-described bellows-like structure, expandable / contractible multi-tubular structure, etc., the length of the injection needle 3 can be protruded from the injection needle puncture adjusting tool 2 before use. Adjust and use. The specific length of the puncture adjusting device 2 for the injection needle can be selected in consideration of the puncture depth depending on the purpose of use. However, when the puncture depth is set to be relatively shallow, it will be described later. It is desirable to use the injection needle assembly 11 and the injection needle puncture adjusting tool 12 of the embodiment. Moreover, when joining with a hub, it is desirable to provide the taper part 21 at one end.
[0011]
The material of the puncture adjusting device 2 for the injection needle is not particularly limited, but is preferably a plastic resin having transparency enough to confirm the injection needle. For example, polyolefin such as polyethylene and polypropylene, polystyrene, polycarbonate, polymethylpentene, methacrylic resin , Vinyl chloride resins, polyester resins such as polyethylene terephthalate, and the like, and mixtures thereof. Those that can withstand various types of sterilization such as high-pressure steam sterilization, EOG sterilization, and gamma ray sterilization are desirable.
[0012]
The injection needle 3 and the hub 4 may be commercially available, and are not particularly limited as long as they can be connected to an injection device such as a syringe. The injection needle puncture adjusting tool 2 and the hub 4 may be a puncture adjustment tool 2 for the injection needle 2 and the hub 4 in advance, even if the puncture adjustment tool 2 for the injection needle is separately fitted and fixed at the connection portion 5 before use. May be fixed by bonding and fusion at the connection portion 5.
[0013]
Next, a method of using the injection needle assembly 1 and the injection needle puncture adjusting tool 2 will be described. As shown in the partial cross-sectional view of FIG. 3, the injection needle 3 is punctured substantially perpendicularly to the skin, and is inserted until one end of the puncture adjusting device 2 for the injection needle reaches the epidermis. The position at which one end of the injection needle puncture adjusting tool 2 reaches the epidermis is the target puncture depth. The depth of puncture varies depending on the case, but is 0.1 to 5 mm. Thereafter, a medicine or the like is injected by an injection device (not shown) such as a syringe connected to the hub 4.
[0014]
[2] FIG. 4 is a partial cross-sectional view showing an injection needle assembly 11 and an injection needle puncture adjusting tool 12 as an example of an embodiment of the present invention. The injection needle assembly 11 includes an injection needle puncture adjusting tool 12, an injection needle 13, and a hub 14. In this embodiment, the shape of the injection needle puncture adjustment tool 12 is the same as that of the injection needle puncture adjustment tool 2 of the above-described embodiment.
[0015]
In the injection needle assembly 11, the length of the injection needle puncture adjustment tool 12 is such that the tip of the injection needle 13 does not protrude from the injection needle puncture adjustment tool 2 while being fixed by the connection portion 15. When the puncture adjustment tool 12 for the injection needle is a bellows-like structure, a multi-tube structure such as a fishing rod, etc., the length of the injection needle 13 is adjusted so that it does not protrude from the puncture adjustment tool 12 for the injection needle before use. And use it. The specific length of the injection needle puncture adjusting tool 12 can be selected in consideration of the puncture depth depending on the purpose of use. However, when the puncture depth is set to be relatively deep, the above-described implementation is required. It is desirable to use the injection needle assembly 1 and the injection needle puncture adjusting tool 2 of the form.
[0016]
The material of the injection needle puncture adjustment tool 12, the injection needle 13 and the hub 14 may be the same as the material of the injection needle puncture adjustment tool 2, the injection needle 3 and the hub 4 of the above-described embodiment. The method may be the same as that of the connection unit 5 of the embodiment described above.
[0017]
Next, a method of using the injection needle assembly 11 and the injection needle puncture adjusting tool 12 will be described. As shown in the partial cross-sectional view of FIG. 5, when the injection needle puncture adjustment tool 12 is strongly applied substantially perpendicular to the skin, the portion of the epidermis that is not in contact with the injection needle puncture adjustment tool 12 expands in a mountain shape. Sting 13 The position of the height of the epidermis swelled in a mountain shape is the target puncture depth. The depth of puncture varies depending on the case, but is 0.05 to 3 mm. Thereafter, a medicine or the like is injected by an injection device (not shown) such as a syringe connected to the hub 14.
[0018]
[3] FIG. 6 is an external view showing an injection needle assembly 21 and an injection needle puncture adjusting tool 22a as an example of an embodiment of the present invention. The injection needle assembly 21 includes an injection needle puncture adjusting tool 22a, an injection needle 23, and a hub 24. In the present embodiment, the shape of the puncture adjusting device 22a for the injection needle is a disc shape as shown in FIG. 7 which is an external view, but is not particularly limited, and is a triangular, quadrangular or other polygonal plate. Alternatively, it may be a cylindrical body having a length extending from the hub 24 to a predetermined position. Furthermore, it may be a clip-like one (injection needle puncture adjusting tool 22b) as shown in FIG.
[0019]
The injection needle puncture adjusting tool 22a is provided with a hole 25a for allowing the injection needle 23 to pass therethrough. The diameter of the hole 25 may be the same as the diameter of the injection needle 23 or may be smaller when the injection needle puncture adjusting tool 22a is made of a flexible material. The position of the puncture adjusting tool 22a for the injection needle may be provided at a position where the tip of the injection needle 23 protrudes in consideration of the puncture depth depending on the purpose of use.
[0020]
The injection needle puncture adjusting tool 22b is provided with a groove 25b for passing the injection needle 23 and a hole 25c into which the injection needle 23 is fitted. The diameter of the hole 25c may be the same as the diameter of the injection needle 23, or may be smaller when the injection needle puncture adjusting tool 22b is made of a flexible material. The groove 25b may be any groove that can be opened as long as the injection needle 23 can pass when the injection needle 23 is fitted into the hole 25c. The position of the puncture adjusting tool 22b for the injection needle may be provided at a position where the tip of the injection needle 23 protrudes in consideration of the puncture depth depending on the purpose of use.
[0021]
The material of the puncture adjusting tools 22a and 22b for the injection needle need not be particularly limited, and a hard or soft material can be appropriately used. Examples of hard materials include metals and hard plastic resins. Examples of hard plastic resins include polyolefins such as polyethylene and polypropylene, polystyrene, polycarbonate, polymethylpentene, methacrylic resin, vinyl chloride resin, and polyethylene terephthalate. Polyester resins, etc., and mixtures thereof can be used. Examples of soft materials include natural rubber, butyl rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, silicone rubber, various vulcanized materials (especially those vulcanized), polyurethane, and polyester. In addition, various elastomers such as polyamide, olefin, and styrene, or a mixture thereof can be used as a gasket for a syringe. In any case, those capable of withstanding various sterilizations such as high-pressure steam sterilization, EOG sterilization, and gamma ray sterilization are desirable.
[0022]
The injection needle 23 and the hub 24 may be commercially available, and are not particularly limited as long as they can be connected to an injection device such as a syringe. The injection needle puncture adjusting tool 22a and the injection needle 23 may be inserted into the hole 25a before use, separately from the injection needle puncture adjustment tool 22a, and the injection needle puncture adjustment tool 22a and the injection needle 23 may be preliminarily attached. It may be fixed by adhesion or fusion, and may be integrally formed with the injection needle 23 when the injection needle puncture adjusting tool 22a is a metal. The needle puncture adjustment tool 22b and the injection needle 23 may be inserted into the hole 25c via the groove 25b before use with the needle puncture adjustment tool 22b as a separate body, and the needle puncture adjustment for the needle is previously adjusted. The injection needle 23 may be fitted into the tool 22b by the method described above and then fixed by adhesion or fusion. In addition, when using the puncture adjusting tools 22a and 22b for injection needles as separate bodies, it is desirable for the contact surface with the injection needle 23 to be made of the soft material described above to prevent displacement.
[0023]
Next, a method of using the injection needle assembly 21 and the injection needle puncture adjusting tools 22a and 22b will be described. The injection needle 23 is punctured substantially perpendicularly to the skin, and is inserted until one end of the puncture adjusting tools 22a and 22b for the injection needle reaches the epidermis. The position at which one end of the injection needle puncture adjusting tool 22 reaches the epidermis is the target puncture depth. Thereafter, a medicine or the like is injected by an injection device (not shown) such as a syringe connected to the hub 24.
[0024]
【The invention's effect】
With the puncture adjusting tool for an injection needle of the present invention and the injection needle assembly including the same, the injection needle can be punctured to a target depth. In particular, when the puncture adjusting device for an injection needle of the present invention and the injection needle assembly provided therewith are used for vaccination subcutaneously injecting a vaccine or the like to a child, it is surely punctured subcutaneously and does not pierce any deeper. This is effective because it does not reach the muscles and can safely perform preventive contact without causing pain. In addition, it is effective because accurate research results and experimental results can be obtained because it does not pierce a small animal or fish used for research or experiment deeply than necessary and does not damage organs.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing an injection needle assembly 1 and an injection needle puncture adjusting device 2 as an example of an embodiment of the present invention.
FIG. 2 is an external view of a puncture adjusting tool 2 for an injection needle.
FIG. 3 is a partial cross-sectional view showing how the injection needle assembly 1 and the injection needle puncture adjusting tool 2 are used.
FIG. 4 is a partial cross-sectional view showing an injection needle assembly 11 and an injection needle puncture adjusting device 12 as an example of an embodiment of the present invention.
FIG. 5 is a partial cross-sectional view showing how the injection needle assembly 11 and the injection needle puncture adjusting tool 12 are used.
FIG. 6 is an external view showing an injection needle assembly 21 and an injection needle puncture adjusting tool 22 as an example of an embodiment of the present invention.
FIG. 7 is an external view of a puncture adjusting tool 22a for an injection needle.
FIG. 8 is an external view of a puncture adjusting tool 22b for an injection needle.
[Explanation of symbols]
1, 11, 21... Injection needle assembly 2, 12, 22... Injection needle puncture adjusting tool 21... Taper portion 3, 13, 23. Hub 5.15 ... Connections 25a, 25c ... Hole 25b ... Groove

Claims (4)

注射針ハブに設けられ、表皮に当接させることにより、注射針を穿刺する深さを目標とする深さに調整することができる注射針用穿刺調整具であって、
該注射針用穿刺調整具は筒体であって、前記注射針と同軸方向に延び、前記注射針をその内部に有し、かつ一端が前記注射針ハブに固定されており、当該注射針用穿刺調整具の他端から前記皮下注射針の針先が突出しない長さであることを特徴とする注射針用穿刺調整具。A puncture adjustment tool for an injection needle that is provided on the injection needle hub and can adjust the depth of puncture of the injection needle to a target depth by contacting the epidermis,
The injection needle puncture adjusting tool is a cylinder, extends in the same direction as the injection needle, has the injection needle therein, and one end is fixed to the injection needle hub, A puncture adjustment tool for an injection needle, characterized in that the needle tip of the hypodermic injection needle does not protrude from the other end of the puncture adjustment tool. 前記他端が表皮に対し強く当てられることによって、前記注射針用穿刺調整具に接していない部分の表皮が前記筒体の内部に向かって山状に膨らみ、その山状に膨らんだ表皮の高さの位置が前記目標とする穿刺の深さとなる請求項１に記載の注射針用穿刺調整具。  When the other end is strongly applied to the epidermis, a portion of the epidermis that is not in contact with the puncture adjusting tool for the injection needle swells in a mountain shape toward the inside of the cylinder, and the height of the epidermis swelled in the chevron shape The puncture adjustment tool for an injection needle according to claim 1, wherein the position is the target puncture depth. 前記穿刺針ハブに固定される接続部を除いた部分の径が一定である請求項１または２に記載の注射針用穿刺調整具。The puncture adjustment tool for an injection needle according to claim 1 or 2, wherein a diameter of a portion excluding a connection portion fixed to the puncture needle hub is constant. 請求項１〜３のいずれかに記載の注射針用穿刺調整具を備えた注射針組立体。  The injection needle assembly provided with the puncture adjustment tool for injection needles in any one of Claims 1-3.
JP20476298A 1998-07-21 1998-07-21 Puncture adjusting tool for injection needle and injection needle assembly including the same Expired - Fee Related JP4118399B2 (en)

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