JPH0747124A - Syringe - Google Patents
SyringeInfo
- Publication number
- JPH0747124A JPH0747124A JP5211057A JP21105793A JPH0747124A JP H0747124 A JPH0747124 A JP H0747124A JP 5211057 A JP5211057 A JP 5211057A JP 21105793 A JP21105793 A JP 21105793A JP H0747124 A JPH0747124 A JP H0747124A
- Authority
- JP
- Japan
- Prior art keywords
- fitting
- injection needle
- injector body
- base end
- syringe
- 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
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、病院，理化学研究所，
実験室等で使用される注射器に関する。The present invention is applied to hospitals, RIKEN,
The present invention relates to a syringe used in a laboratory or the like.
【０００２】[0002]
【従来の技術】従来公知の注射器は、ガラス製あるいは
合成樹脂製の注射器本体の先端に、金属製の注射針を取
り付け、これらを接着剤で接着し一体化するものが通常
であった。この金属針は、コスト高となるため、注射針
と注射器本体とを合成樹脂材によって一体に構成し、低
コストとした注射器も公知である（特開昭６０−９９２
６７号公報参照）。2. Description of the Related Art Conventionally known syringes are usually those in which a metal injection needle is attached to the tip of a syringe body made of glass or synthetic resin, and these are bonded and integrated with an adhesive. Since the cost of this metal needle is high, there is also known a low-cost syringe in which the injection needle and the syringe body are integrally formed of a synthetic resin material (Japanese Patent Laid-Open No. 60-992).
67 publication).
【０００３】[0003]
【発明が解決しようとする課題】上記公知の合成樹脂製
の注射器は、注射針までを一体に型成形するものである
から、比較的長い成形型が必要で、この長い型で成形し
た注射器は、先端注射針と注射器本体の基端側とでは肉
厚が相違し易く、それが原因して不良品の生産率が高
く、結果としてコスト高になってしまうという問題点が
ある。Since the above-mentioned known synthetic resin syringe is integrally molded up to the injection needle, a relatively long molding die is required. There is a problem that the tip injection needle and the base end side of the syringe body are likely to have different wall thicknesses, which causes a high production rate of defective products, resulting in high cost.
【０００４】上記の点を解決するために、金属による注
射針と合成樹脂による注射器本体とによって生産してい
た従来公知の注射器と同様に、注射針と注射器本体とを
共に合成樹脂で生産し、これらを溶着または接着するこ
とが考えられるが、単に従前の金属針のような形状で
は、これを注射器本体に結合一体化する際の位置合わせ
が困難で、作業性が悪いという問題点がある。本発明
は、これら従来製品の問題点に鑑み、生産のための作業
性をよくし、不良品の生産率を低下させ、安価に提供で
きる注射器を提供することを目的とするものである。In order to solve the above-mentioned problems, the injection needle and the syringe body are both made of a synthetic resin, as is the case with a conventionally known syringe which is produced by a metal injection needle and a synthetic resin syringe body. Although it is conceivable to weld or adhere these, there is a problem in that the shape like a conventional metal needle makes it difficult to align the metal needle with the syringe main body when it is integrated with the syringe body, resulting in poor workability. The present invention has been made in view of these problems of conventional products, and an object of the present invention is to provide a syringe that improves workability for production, reduces the production rate of defective products, and can be provided at low cost.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明注射器では、注射針及び注射器本体のいずれ
も合成樹脂材によって各別に型成形し、注射針と注射器
本体の結合部のいずれか一方もしくは両方に位置合わせ
用の嵌合段部を形成し、該結合部を緊密な嵌合手段によ
って構成し、この結合部を溶着手段によって一体化構成
することを特徴とするものである。In order to achieve the above object, in the syringe of the present invention, both the injection needle and the syringe body are separately molded with a synthetic resin material, and the injection needle and the syringe body are joined together. It is characterized in that a fitting step portion for alignment is formed on one or both of them, the joint portion is constituted by a tight fitting means, and the joint portion is integrally constituted by welding means.
【０００６】[0006]
【作用】注射針と注射器本体とは各別の型成形によって
成形され、これらがその結合部の位置合わせ嵌合段部に
よって適格な位置に緊密に嵌合され、この結合部が溶着
手段によって一体化される。[Operation] The injection needle and the syringe body are molded by separate molding, and these are tightly fitted to the proper position by the fitting fitting step of the joining portion, and the joining portion is integrated by the welding means. Be converted.
【０００７】[0007]
【実施例】以下図面に示した実施例を参照して本発明の
詳細を説明する。図中１は注射針、２は注射器本体であ
る。注射針１の注射器本体との結合部を構成する基端３
は、注射器本体２の結合部を構成する先端４と同一の外
径に形成されている。図１及び図２に示した実施例で
は、注射針１の基端３が注射器本体２の先端内側に緊密
に嵌入結合するように、該基端３の外側に嵌合段部５を
形成し、注射器本体４の内側に嵌合段部６を形成してあ
り、これら嵌合段部５，６によって結合時の適格な位置
合わせがなされる。そして注射針１の基端３の結合部に
位置合わせ用の凹リング７が形成され、一方注射器本体
２の結合部に位置合わせ用の凸リング８が形成してあ
る。これら位置合わせ用の嵌合段部５，６並びに位置合
わせ用の凹凸リングによって適格に位置合わせして結合
し、接合部分を超音波溶着等の溶着手段によって溶着９
し、一体化してある。上記凹凸リングに変えて、部分的
凹凸部あるいは複数の凹凸リング、さらにはローレット
等であってもよい。The present invention will be described in detail below with reference to the embodiments shown in the drawings. In the figure, 1 is an injection needle and 2 is a syringe body. Proximal end 3 that constitutes the connecting portion of the injection needle 1 with the syringe body
Is formed to have the same outer diameter as the tip 4 that constitutes the connecting portion of the syringe body 2. In the embodiment shown in FIGS. 1 and 2, a fitting step portion 5 is formed on the outer side of the base end 3 so that the base end 3 of the injection needle 1 is tightly fitted and coupled to the inner side of the distal end of the syringe body 2. A fitting step portion 6 is formed inside the syringe body 4, and these fitting step portions 5 and 6 perform proper alignment at the time of coupling. A concave ring 7 for alignment is formed on the joint portion of the proximal end 3 of the injection needle 1, while a convex ring 8 for alignment is formed on the joint portion of the syringe body 2. The fitting step portions 5 and 6 for positioning and the concavo-convex ring for positioning are properly positioned and coupled, and the joint portion is welded by welding means such as ultrasonic welding 9
However, it is integrated. Instead of the concavo-convex ring, a partial concavo-convex portion, a plurality of concavo-convex rings, or knurls may be used.
【０００８】図３及び図４に別の実施例が示してあり、
図上同一符号をもって示した部分は同一部分である。こ
の実施例で図１及び図２に示した実施例と相違する点
は、注射針１の基端３の内側に嵌合段部５を形成し、注
射器本体の先端４の外側に嵌合段部６を設けた点であ
る。Another embodiment is shown in FIGS. 3 and 4,
The parts indicated by the same reference numerals in the figure are the same parts. This embodiment is different from the embodiment shown in FIGS. 1 and 2 in that a fitting step portion 5 is formed inside the proximal end 3 of the injection needle 1 and an fitting step outside the tip 4 of the syringe body. The point is that the part 6 is provided.
【０００９】つぎに図５及び図６にさらに別の実施例が
示してあり、同じく同一符号をもって示した部分は同一
部分である。この実施例では、注射針１の基端３の外側
にのみ位置決め用の嵌合段部５を設けたものであり、こ
の結合部を緊密に結合するため、基端３の嵌合部の外径
を注射器本体２の先端の内径よりきわめて僅かに大きく
してあることである。Next, another embodiment is shown in FIGS. 5 and 6, and the portions denoted by the same reference numerals are the same portions. In this embodiment, the fitting step portion 5 for positioning is provided only on the outer side of the base end 3 of the injection needle 1, and since this joining portion is tightly joined, the outside of the fitting portion of the base end 3 is provided. The diameter is made slightly larger than the inner diameter of the tip of the syringe body 2.
【００１０】[0010]
【発明の効果】叙上の如く本発明注射器では、注射針と
注射器本体とを各別の金型によって型成形するので、金
型を小型にでき、それだけ金型代を安くすることがで
き、低コストに提供できる。そして注射針と注射器本体
との結合部に位置合わせ用の嵌合段部を形成したから、
結合時の位置合わせの作業性がよく、また、この構成及
び作業性のよさから、不良品の生産率をきわめて低くす
ることができ、この点から注射器を低コストに提供でき
る効果を有する。As described above, in the syringe of the present invention, since the injection needle and the main body of the syringe are molded by separate molds, the mold can be downsized, and the mold cost can be reduced accordingly. It can be provided at low cost. And since the fitting step portion for positioning is formed at the connecting portion between the injection needle and the syringe body,
The workability of alignment at the time of connection is good, and because of this configuration and workability, the production rate of defective products can be made extremely low, and from this point, there is an effect that the syringe can be provided at low cost.
【図１】本発明注射器の一実施例の一部切欠断面図FIG. 1 is a partially cutaway sectional view of an embodiment of a syringe of the present invention.
【図２】同じく一部切欠分解断面図FIG. 2 is a partially cutaway exploded sectional view of the same.
【図３】同じく別の実施例の一部切欠断面図FIG. 3 is a partially cutaway sectional view of another embodiment of the present invention.
【図４】同じくその一部切欠分解断面図FIG. 4 is a partially cutaway exploded sectional view of the same.
【図５】さらに別の実施例の一部切欠断面図FIG. 5 is a partially cutaway sectional view of yet another embodiment.
【図６】同じくその一部切欠分解断面図FIG. 6 is a partially cutaway exploded sectional view of the same.
１ 注射針 ２ 注射器本体 ３ 基端 ４ 先端 ５ 嵌合段部 ６ 嵌合段部 ７ 凹リング ８ 凸リング ９ 溶着 1 Injection Needle 2 Syringe Body 3 Base End 4 Tip 5 Fitting Step 6 Fitting Step 7 Concave Ring 8 Convex Ring 9 Welding
Claims (2)
脂材によって各別に型成形し、注射針と注射器本体の結
合部のいずれか一方もしくは両方に位置合わせ用の嵌合
段部を形成し、該結合部を緊密な嵌合手段によって構成
し、この結合部を溶着手段によって一体化構成すること
を特徴とする注射器。1. An injection needle and a syringe body are separately molded with a synthetic resin material, and a fitting step portion for alignment is formed on either or both of the coupling portions of the injection needle and the syringe body, A syringe characterized in that the joint portion is constituted by tight fitting means, and the joint portion is integrally constituted by welding means.
合わせ用の凹凸部を設けてある上記請求項１に記載の注
射器。2. The syringe according to claim 1, wherein a concavo-convex portion for alignment is provided at a connecting portion between the injection needle and the syringe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5211057A JPH0747124A (en) | 1993-08-04 | 1993-08-04 | Syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5211057A JPH0747124A (en) | 1993-08-04 | 1993-08-04 | Syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0747124A true JPH0747124A (en) | 1995-02-21 |
Family
ID=16599685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5211057A Pending JPH0747124A (en) | 1993-08-04 | 1993-08-04 | Syringe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747124A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012098766A1 (en) * | 2011-01-19 | 2012-07-26 | テルモ株式会社 | Syringe provided with needle, and method for producing syringe provided with needle |
| JP2019134921A (en) * | 2013-09-11 | 2019-08-15 | テルモ株式会社 | Medical hollow needle assembly and method for manufacturing hollow needle |
-
1993
- 1993-08-04 JP JP5211057A patent/JPH0747124A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012098766A1 (en) * | 2011-01-19 | 2012-07-26 | テルモ株式会社 | Syringe provided with needle, and method for producing syringe provided with needle |
| JP2019134921A (en) * | 2013-09-11 | 2019-08-15 | テルモ株式会社 | Medical hollow needle assembly and method for manufacturing hollow needle |
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