JPH0532131Y2 - - Google Patents
Info
- Publication number
- JPH0532131Y2 JPH0532131Y2 JP5407790U JP5407790U JPH0532131Y2 JP H0532131 Y2 JPH0532131 Y2 JP H0532131Y2 JP 5407790 U JP5407790 U JP 5407790U JP 5407790 U JP5407790 U JP 5407790U JP H0532131 Y2 JPH0532131 Y2 JP H0532131Y2
- Authority
- JP
- Japan
- Prior art keywords
- syringe
- piston
- sealing
- sealing stopper
- injection needle
- 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
- 238000007789 sealing Methods 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 2
- 229940071643 prefilled syringe Drugs 0.000 description 6
- 239000002775 capsule Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Description
【考案の詳細な説明】
〔技術分野〕
本考案は、プレフイルドシリンジ、プレフイル
ドカプセル等の注射液容器、特に、そのシリンジ
の筒底付近に設けられた密封栓に関する（IPC：
A61M）。[Detailed description of the invention] [Technical field] The present invention relates to injection liquid containers such as pre-filled syringes and pre-filled capsules, and particularly to a sealing stopper provided near the bottom of the syringe (IPC:
A61M).
なお、本明細書において「シリンジ」の用語
を、同様な機能と果たすカプセルを含めた意味で
用いることがある。 Note that in this specification, the term "syringe" may be used to include capsules that perform similar functions.
従来から、プレフイルドシリンジを具えた注射
器（例えば、実開昭59−2343号公報参照）やプレ
フイルドカプセルを具えた注射器（例えば、実開
昭56−138638号公報参照）が知られている。とこ
ろで、従来のこの種のプレフイルドシリンジ等の
注射液容器に用いられた密封栓は、先端部と後端
部との双方にそれぞれ刃先を具えた注射針を用
い、これを該注射液容器の筒先に装着することに
よつて、該密封栓の密閉性が該後端部の刃先によ
つて破壊される構造のものになつていた。しかし
ながら、注射針の先端部と後端部の双方に刃先を
形成することはコスト高となるばかりか、該後端
部の刃先で誤つて指を刺してしまうという危険も
あつた。
Conventionally, syringes equipped with a prefilled syringe (see, for example, Japanese Utility Model Application No. 59-2343) and syringes equipped with a prefilled capsule (see, for example, Japanese Utility Model Application Publication No. 56-138638) have been known. By the way, the sealing stopper used in conventional injection liquid containers such as this type of prefilled syringe uses a syringe needle with cutting edges at both the front end and the rear end, and this is used to close the injection liquid container. By attaching it to the tip of the cylinder, the sealing performance of the sealing plug is broken by the cutting edge at the rear end. However, forming cutting edges on both the tip and the rear end of the injection needle not only increases costs, but also poses a risk of accidentally pricking one's finger with the cutting edge at the rear end.
すなわち、本考案は、筒先に注射針を具えたシ
リンジと、該シリンジに摺動可能に収容されたピ
ストンと、該シリンジの筒底と該ピストンとの間
で同じく該シリンジに摺動可能に収容された密閉
栓とからなる注射器であつて、該シリンジは該密
閉栓の前進を許し後退を阻止する突起を筒底寄り
に具え、該密閉栓はその密閉性を実質的に阻害し
ない誘導孔を予め穿設されたものであつて、該密
閉栓が薬液を介して該ピストンで間接的に押され
て該突起を越えて前進すると、該筒底から所定長
さ突出している該注射針４又は別体の針管４′の
後端部４ｂが、該誘導孔部分を拡張して該密閉栓
を貫通するものであることを特徴とする。
That is, the present invention provides a syringe with a needle at its tip, a piston slidably housed in the syringe, and a piston slidably housed in the syringe between the bottom of the syringe and the piston. The syringe is equipped with a protrusion near the bottom of the barrel that allows the sealing stopper to move forward and prevents its retreat, and the sealing stopper has a guide hole that does not substantially impede its sealing performance. The needle 4 or It is characterized in that the rear end 4b of the separate needle tube 4' expands the guide hole portion and passes through the sealing stopper.
第１図に示す実施例において、１はプレフイル
ドシリンジで、２は該シリンジに摺動可能に収容
されたピストン、３は該シリンジの内側の筒底１
ａと該ピストンとの間に装着された合成ゴム製の
密閉栓で、その中央には誘導孔３ａが予め穿設さ
れている。４は該プレフイルドシリンジの筒先に
設けられた注射針で、その先端部４ａには従来公
知の注射針と同様の刃先が形成されている。しか
し、該注射針の後端部４ｂには刃先は形成されて
いない。すなわち、該注射針の後端部４ｂはシリ
ンジの筒底からシリンジの内側に所定長さ突出し
てはいるものの、その先端は基本的に針管を横に
切断したままの形状である。
In the embodiment shown in FIG. 1, 1 is a prefilled syringe, 2 is a piston slidably housed in the syringe, and 3 is a cylindrical bottom 1 inside the syringe.
A sealing stopper made of synthetic rubber is installed between a and the piston, and a guide hole 3a is pre-drilled in the center of the stopper. Reference numeral 4 denotes an injection needle provided at the tip of the prefilled syringe, and the tip 4a thereof has a cutting edge similar to a conventionally known injection needle. However, no cutting edge is formed on the rear end portion 4b of the injection needle. That is, although the rear end portion 4b of the injection needle protrudes from the bottom of the syringe to the inside of the syringe by a predetermined length, its tip basically has the shape of a needle tube cut horizontally.
ところで、該密閉栓の誘導孔３ａは、合成ゴム
製の素材に小丸、一文字、十文字状等の錐先を持
つ錐を穿設させることによつて形成されたもの
で、該誘導孔は該錐の引き抜き後、該合成ゴムの
素材自体の弾性により実質的に密閉されており、
少なくとも、該密閉栓が該シリンジ１の内側に装
着された状態において、該誘導孔から薬液が外側
に漏れたりすることはない。そして、ピストンが
押圧され、該密閉栓が薬液を介してシリンジの筒
底寄りに移動する過程において、前記注射針の後
端部４ｂが該誘導孔３ａを押し拡げながら該密閉
栓を貫通し、該注射針と該密閉栓内側のシリンジ
内部とが導通する。なお、１ｂはシリンジの内側
に形成された環状の突起で、該密閉栓が筒底寄り
に移動した際に、排出されずに該筒底部分に残つ
た空気の圧縮反力に抗してその移動した状態を維
持し、該密閉栓の後退を阻止する為のものであ
る。第２図に他の実施例を示す。この実施例が前
述した第１図の実施例と異なる点は、注射針部分
の構造である。すなわち、この実施例において、
注射針は通常の注射器の注射針と同様にシリンジ
の筒先に着脱自在に係合される構造となつてい
る。そして、これとは別に、シリンジの筒底部分
からは針管が該シリンジの内側に所定長さ突出し
て設けられており、これが上記第１実施例の場合
の注射針の後端部に対応するものである。 By the way, the guide hole 3a of the sealing stopper is formed by drilling a cone with a small round, one letter, or cross-shaped conical tip into a synthetic rubber material. After being pulled out, the material is substantially sealed due to the elasticity of the synthetic rubber material itself,
At least when the sealing stopper is attached to the inside of the syringe 1, the medicinal solution will not leak to the outside from the guide hole. Then, in the process in which the piston is pressed and the sealing stopper moves toward the bottom of the syringe via the drug solution, the rear end portion 4b of the injection needle penetrates the sealing stopper while pushing and expanding the guide hole 3a, The injection needle and the inside of the syringe inside the sealing stopper are electrically connected. Note that 1b is an annular projection formed on the inside of the syringe, and when the sealing stopper moves toward the bottom of the cylinder, it resists the compression reaction force of the air that remains at the bottom of the cylinder without being discharged. This is to maintain the moved state and prevent the sealing plug from retreating. FIG. 2 shows another embodiment. This embodiment differs from the embodiment shown in FIG. 1 described above in the structure of the injection needle portion. That is, in this example,
The injection needle has a structure that is detachably engaged with the tip of the syringe, similar to the injection needle of a normal syringe. Separately, a needle tube is provided from the bottom of the syringe to protrude a predetermined length inside the syringe, and this corresponds to the rear end of the injection needle in the first embodiment. be.
本考案の構成によれば、密閉栓３が薬液を介し
てピストン２で押されることによつて、それが突
起１ｂを越えて筒底寄りに前進する。そして該突
起の作用によつて、その後、該密閉栓の後退が阻
止される。該密閉栓が突起と越えた後でピストン
に加える押圧力を無くしてしまつても、筒底１ａ
部分に排出されずに残つた圧縮空気の反力は該突
起の存在により打ち消され、注射針４（又は別体
の針管４′）の後端部４ｂが、誘導孔３ａ部分を
拡張して該密閉栓を貫通した導通状態がそのまま
維持される。それ故、針管に小孔を穿設するとい
うような精密な作業を必要としない安価な製品を
提供することが出来る。
According to the configuration of the present invention, when the sealing stopper 3 is pushed by the piston 2 through the chemical liquid, it moves beyond the protrusion 1b toward the bottom of the cylinder. The action of the protrusion then prevents the sealing plug from retreating. Even if the pressing force applied to the piston after the sealing plug passes over the protrusion is removed, the cylinder bottom 1a
The reaction force of the compressed air remaining without being discharged to the part is canceled by the presence of the protrusion, and the rear end part 4b of the injection needle 4 (or the separate needle tube 4') expands the guide hole 3a part. The state of conduction through the sealing stopper is maintained as it is. Therefore, it is possible to provide an inexpensive product that does not require precise work such as drilling a small hole in a needle tube.
図面に本考案の実施例を示し、第１図は本考案
に係るプレフイルド注射器を模式的に示す要部の
側断面図で、第１図ａは密閉栓が導通される前
の、第１図ｂはその導通後の状態を示す。第２図
は他の実施例を示す同じくプレフイルド注射器の
要部の側断面図である。
An embodiment of the present invention is shown in the drawings, and FIG. 1 is a side cross-sectional view of a main part schematically showing a prefilled syringe according to the present invention, and FIG. b shows the state after conduction. FIG. 2 is a side sectional view of the main parts of the same prefilled syringe showing another embodiment.
Claims (1)
ンジに摺動可能に収容されたピストン２と、該シ
リンジの筒底と該ピストンとの間で同じく該シリ
ンジに摺動可能に収容された密閉栓３とからな
り、 該シリンジは該密閉栓の前進を許し後退を阻止
する突起１ｂを筒底寄りに具え、 該密閉栓はその密閉性を実質的に阻害しない誘
導孔３ａが予め穿設されたものであつて、 ピストンで薬液を介して間接的に押されること
によつて、該密閉栓が該突起を越えて前進し、該
筒底から所定長さ突出している該注射針４又は別
体の針管４′の後端部４ｂが、該誘導孔部分を拡
張して該密閉栓を貫通するものであることを特徴
とする注射器。[Claims for Utility Model Registration] A syringe 1 having an injection needle 4 at its tip, a piston 2 slidably housed in the syringe, and a syringe with a piston 2 between the bottom of the syringe and the piston. The syringe consists of a sealing stopper 3 that is slidably housed, and the syringe is provided with a protrusion 1b near the bottom of the barrel that allows the sealing stopper to move forward and prevents it from retreating, and the sealing stopper does not substantially impede its sealing performance. A guide hole 3a is pre-drilled, and by being pushed indirectly by a piston through the chemical liquid, the sealing plug advances beyond the protrusion and protrudes a predetermined length from the bottom of the cylinder. A syringe characterized in that the rear end portion 4b of the injection needle 4 or the separate needle tube 4' expands the guide hole portion and passes through the sealing stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5407790U JPH0532131Y2 (en) | 1990-05-25 | 1990-05-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5407790U JPH0532131Y2 (en) | 1990-05-25 | 1990-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0413152U JPH0413152U (en) | 1992-02-03 |
| JPH0532131Y2 true JPH0532131Y2 (en) | 1993-08-18 |
Family
ID=31575819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5407790U Expired - Lifetime JPH0532131Y2 (en) | 1990-05-25 | 1990-05-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532131Y2 (en) |
-
1990
- 1990-05-25 JP JP5407790U patent/JPH0532131Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0413152U (en) | 1992-02-03 |
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