JP2002102346A - Syringe - Google Patents
SyringeInfo
- Publication number
- JP2002102346A JP2002102346A JP2000293856A JP2000293856A JP2002102346A JP 2002102346 A JP2002102346 A JP 2002102346A JP 2000293856 A JP2000293856 A JP 2000293856A JP 2000293856 A JP2000293856 A JP 2000293856A JP 2002102346 A JP2002102346 A JP 2002102346A
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- injection needle
- injection
- outer cylinder
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、使用後の注射針を
簡単に取り外して廃棄すことができる注射器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a syringe that can easily remove a used needle and discard it.
【0002】[0002]
【従来の技術】近年、医者や看護婦等の医療従事者が、
使用済みの注射針で誤って自分の指等を刺してしまい、
様々な感染症に感染してしまう事故が報告されている。
こうした事故を防止するため、使用後の注射針を注射筒
の中に収納し、注射針を外部と遮断する注射器が使用さ
れたり、また、使用後の注射針のみを抜去する装置も知
られている。2. Description of the Related Art In recent years, medical workers, such as doctors and nurses,
I accidentally stab my finger with a used injection needle,
There have been reports of accidents involving various infectious diseases.
In order to prevent such accidents, a syringe that stores the used needle in a syringe barrel and shuts off the needle from the outside is used, and a device that removes only the used needle after use is also known. I have.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、従来の
装置によれば、装置が複雑であったり大掛かりであった
りして、製造のためのコストが増大するという問題があ
った。本発明は、上記の点にかんがみてなされたもの
で、簡単な構成によって注射針の取り外すことができる
機構を提供するものである。However, according to the conventional apparatus, there is a problem that the apparatus is complicated or large-scale, and the manufacturing cost increases. The present invention has been made in view of the above points, and provides a mechanism capable of removing a syringe needle with a simple configuration.
【0004】[0004]
【課題を解決するための手段】上記課題を解決するた
め、本発明においては、先端に注射針を取り付けた外筒
と、外筒内に挿入されるプランジャとを備えた注射器に
おいて、注射針の後端を外筒内に突出させるように構成
した。この注射器を用いれば、注射後に、注射針の後端
の突出部分をプランジャで押せば、注射針を外筒から簡
単に取り外すことができる。According to the present invention, there is provided a syringe having an outer cylinder having an injection needle attached to a tip thereof and a plunger inserted into the outer cylinder. The rear end is configured to protrude into the outer cylinder. If this syringe is used, the injection needle can be easily removed from the outer cylinder by pushing the projected portion of the rear end of the injection needle with a plunger after the injection.
【0005】[0005]
【発明の実施の形態】(実施形態1)図1は本発明の実
施の形態の一例を示す断面図であり、注射器1は、先端
に注射針3を取り付けた外筒5と、外筒5内に挿入され
るプランジャ7とを備えている。注射針3はハブ9に固
定されて、その後端3aはハブ9を突き抜けて、外筒5
内に突出する程度に延びている。外筒5の先端には注射
針取付口11が形成され、ハブ9が取付口11に嵌合す
ることによって注射針3が外筒5に取り付けられる。ハ
ブ9及び取付口11はテーパー状になっていて両者を強
く嵌合させることにより、注射針3は容易に抜けないよ
うになっている。(Embodiment 1) FIG. 1 is a cross-sectional view showing an example of an embodiment of the present invention. A syringe 1 has an outer cylinder 5 having a needle 3 attached to a distal end, and an outer cylinder 5. And a plunger 7 inserted therein. The injection needle 3 is fixed to the hub 9, and the rear end 3 a of the injection needle 3 penetrates through the hub 9 to form the outer cylinder 5.
It extends so as to protrude inward. An injection needle attachment port 11 is formed at the tip of the outer cylinder 5, and the injection needle 3 is attached to the outer cylinder 5 by fitting the hub 9 into the attachment port 11. The hub 9 and the mounting port 11 are tapered, and the two are strongly fitted to each other so that the injection needle 3 is not easily pulled out.
【0006】次に上記注射器1の使用方法について説明
する。図1(A)に示すように、薬液Mを吸入し、プラ
ンジャ7を押して注射を行い、(B)に示すように、プ
ランジャ7の先端7aが注射針3の後端3aに当るとプ
ランジャ7はそこで一旦制止され、注射が完了する。注
射後、プランジャ7を更に押すと注射針3の後端3aが
押されて、図1(C)に示すように、ハブ9が取付口1
1から外れ、注射針3を外筒5から簡単に取り外すこと
ができる。Next, a method of using the syringe 1 will be described. As shown in FIG. 1 (A), the medicinal solution M is inhaled and the plunger 7 is pressed to perform injection. As shown in FIG. 1 (B), when the tip 7a of the plunger 7 hits the rear end 3a of the injection needle 3, the plunger 7 is moved. Is once stopped there and the injection is complete. After the injection, when the plunger 7 is further pushed, the rear end 3a of the injection needle 3 is pushed, and as shown in FIG.
1 and the injection needle 3 can be easily removed from the outer cylinder 5.
【0007】ハブ9及び取付口11はテーパー形状にな
っており、プランジャ7の先端7aが注射針3の後端3
aに当っただけではハブ9は抜けることはないので使用
上問題はないが、ハブ9が更に抜けにくくなるように構
成してもよい。例えば、ハブ9の内周面に突起(又は凹
部)を設け取付口11の外周面に凹部(又は突起)を形
成し、前記突起と凹部とを嵌合させて、ハブ9が取付口
11から簡単に抜けないようにし、注射後にプランジャ
7で強く押したときにハブ9が抜けるようにしてもよ
い。The hub 9 and the mounting opening 11 are tapered, and the tip 7a of the plunger 7 is
There is no problem in use because the hub 9 does not come off simply by hitting a. However, the hub 9 may be configured to be harder to come off. For example, a protrusion (or a concave portion) is provided on the inner peripheral surface of the hub 9, a concave portion (or a convex portion) is formed on the outer peripheral surface of the mounting port 11, and the projection and the concave portion are fitted to each other. The hub 9 may be prevented from coming out easily when the plunger 7 is strongly pressed after the injection.
【0008】(実施形態2)図2に別の実施形態を示
す。注射器13は、プランジャ7の先端7aにストッパ
15を形成したもので、その他の構成は実施形態1と同
様である。ストッパ15は、注射完了時において、プラ
ンジャ7が注射針3の後端3aを押さないようにプラン
ジャ7を制止させる制止手段として機能する。(Embodiment 2) FIG. 2 shows another embodiment. The syringe 13 has a stopper 15 formed at the tip 7a of the plunger 7, and the other configuration is the same as that of the first embodiment. The stopper 15 functions as stopping means for stopping the plunger 7 so that the plunger 7 does not press the rear end 3a of the injection needle 3 when the injection is completed.
【0009】次に、注射器13の使用方法について説明
すると、図2(A)に示すように、薬液Mを吸入し、プ
ランジャ7を押して注射を行い、(B)に示すように、
ストッパ15が外筒の先端面に当ったところでプランジ
ャ7は制止され、注射が完了する。ストッパ15の位置
は製造時に予め位置決めされる。注射後、プランジャ7
を引き、図2(C)に示すようにプランジャ7を矢印方
向に回転させて、ストッパ15が注射針3の延長線上に
位置したところで止め、図2(D)に示すようにプラン
ジャ15を押す。するとストッパ15によって注射針3
の後端3aが押され、図2(E)に示すように、注射針
3が外筒5から取り外される。Next, the method of using the syringe 13 will be described. As shown in FIG. 2 (A), the drug solution M is inhaled, the plunger 7 is pressed to perform injection, and as shown in FIG.
When the stopper 15 hits the distal end surface of the outer cylinder, the plunger 7 is stopped, and the injection is completed. The position of the stopper 15 is determined in advance during manufacturing. After injection, plunger 7
2, the plunger 7 is rotated in the direction of the arrow as shown in FIG. 2 (C), and stopped when the stopper 15 is located on the extension of the injection needle 3, and the plunger 15 is pushed as shown in FIG. 2 (D). . Then, the injection needle 3 is moved by the stopper 15.
The rear end 3a is pushed, and the injection needle 3 is removed from the outer cylinder 5 as shown in FIG.
【0010】(実施形態3)注射器17においては、図
3(A)に示すように、ストッパ19をプランジャ7の
後端寄り(図3の右側)に配置した。図3(C)は外筒
5の後端面図であり、外筒5の後端面5aにストッパ1
9が挿入可能な切欠き5bを形成した。その他の構成は
実施形態1と同様である。ストッパ19は、はじめ図3
(A)の位置にあって、注射完了時にはストッパ19が
外筒5の後端5aに当ってプランジャ7は制止され注射
針3の後端3aを押圧しない(図3(B))。ストッパ
19の位置は製造時に予め位置決めされる。注射完了
後、プランジャ7を引いて、回転させ、ストッパ19を
切欠き5bの位置に移動させ、その後プランジャ7を押
すとストッパ19は切欠き5bを通って下方へ移動で
き、プランジャ7の先端7aによって注射針3の後端3
aが押されて注射針3が外筒5から取り外される。(Embodiment 3) In the syringe 17, as shown in FIG. 3 (A), a stopper 19 is arranged near the rear end of the plunger 7 (right side in FIG. 3). FIG. 3C is a rear end view of the outer cylinder 5, and a stopper 1 is provided on the rear end face 5 a of the outer cylinder 5.
9 formed a notch 5b into which an insert was possible. Other configurations are the same as those of the first embodiment. The stopper 19 is first shown in FIG.
At the position (A), when the injection is completed, the stopper 19 hits the rear end 5a of the outer cylinder 5, the plunger 7 is stopped, and the rear end 3a of the injection needle 3 is not pressed (FIG. 3B). The position of the stopper 19 is determined in advance during manufacturing. After the injection is completed, the plunger 7 is pulled and rotated to move the stopper 19 to the position of the notch 5b. Then, when the plunger 7 is pushed, the stopper 19 can move downward through the notch 5b, and the tip 7a of the plunger 7 can be moved. The rear end 3 of the injection needle 3
a is pushed, and the injection needle 3 is removed from the outer cylinder 5.
【0011】(実施形態4)図4の注射器21において
は、ストッパ23を外筒5側に設けた。すなわち、スト
ッパ23は外筒5の先端(図4の左側)近傍の内周面に
形成された複数個の突起(又は環状の突起)であって、
注射完了時においては、プランジャ7が注射針3の後端
3aを押さないようにプランジャ7を制止させる。すな
わち、図4(A)に示すように、薬液Mを吸入し、プラ
ンジャ7を押して注射を行い、図4(B)に示すよう
に、プランジャ7の先端7aがストッパ23に当ったと
ころでプランジャ7は制止され、注射が完了する。注射
完了後、さらにプランジャ7を押すと、プランジャ7の
先端7aがストッパ23を乗り越え、図4(C)に示す
ように、プランジャ7の先端7aにより注射針3の後端
3aが押され、注射針3が外筒5から取り外される。(Embodiment 4) In the syringe 21 shown in FIG. 4, a stopper 23 is provided on the outer cylinder 5 side. That is, the stopper 23 is a plurality of protrusions (or annular protrusions) formed on the inner peripheral surface near the tip (left side in FIG. 4) of the outer cylinder 5,
When the injection is completed, the plunger 7 is stopped so that the plunger 7 does not press the rear end 3a of the injection needle 3. That is, as shown in FIG. 4 (A), the medicinal solution M is inhaled, the plunger 7 is pressed to perform injection, and as shown in FIG. 4 (B), when the tip 7a of the plunger 7 hits the stopper 23, Is stopped and the injection is completed. After the injection is completed, when the plunger 7 is further pushed, the tip 7a of the plunger 7 rides over the stopper 23, and the rear end 3a of the injection needle 3 is pushed by the tip 7a of the plunger 7, as shown in FIG. The needle 3 is removed from the outer cylinder 5.
【0012】(実施形態5)図5の注射器25において
は、プランジャ7の先端部7bに、注射針3の突出部分
3bを収容する複数の逃げ孔27がプランジャ7の長さ
方向に伸びて90゜間隔で形成されている(図6参
照)。その他の構成は実施形態1と同様である。(Embodiment 5) In the syringe 25 shown in FIG. 5, a plurality of escape holes 27 for accommodating the protruding portion 3b of the injection needle 3 extend in the longitudinal direction of the plunger 7 at the tip 7b of the plunger 7.形成 formed at intervals (see FIG. 6). Other configurations are the same as those of the first embodiment.
【0013】注射器25の使用方法について説明する
と、図5(A)に示すように、薬液Mを吸入し、プラン
ジャ7を押して注射を行い、図5(B)に示すように、
プランジャ7の先端部7bが外筒5の先端面に当ったと
ころでプランジャ7は制止され、注射が完了する。この
とき、注射針3の突出部分3bは逃げ孔27内に収容さ
れ、注射針3の突出部分3bは押圧されない。逃げ孔2
7は、そのうちの1つに注射針3の突出部分3bが挿入
されるように製造時に予め位置決めされている。注射完
了後、プランジャ7を引き、図5(C)に示すように矢
印方向に45゜回転させて、逃げ孔27が注射針3の延
長線上を外れた位置にきたところで止め、図5(D)の
状態にしてからプランジャ7を押す。するとプランジャ
7の先端部7b(逃げ孔27が形成されていない部分)
によって注射針3の後端3aが押され、図5(E)に示
すように、注射針3が外筒5から取り外される。The method of using the syringe 25 will be described. As shown in FIG. 5 (A), the drug solution M is inhaled, the plunger 7 is pressed to perform injection, and as shown in FIG.
When the distal end 7b of the plunger 7 comes into contact with the distal end surface of the outer cylinder 5, the plunger 7 is stopped, and the injection is completed. At this time, the projecting portion 3b of the injection needle 3 is accommodated in the escape hole 27, and the projecting portion 3b of the injection needle 3 is not pressed. Escape hole 2
7 is previously positioned at the time of manufacture so that the protruding portion 3b of the injection needle 3 is inserted into one of them. After the injection is completed, the plunger 7 is pulled and rotated by 45 ° in the direction of the arrow as shown in FIG. 5 (C), and stopped when the escape hole 27 comes off the extended line of the injection needle 3, and FIG. ), And then push the plunger 7. Then, the tip portion 7b of the plunger 7 (the portion where the escape hole 27 is not formed).
As a result, the rear end 3a of the injection needle 3 is pushed, and the injection needle 3 is removed from the outer cylinder 5 as shown in FIG.
【0014】(実施形態6)図7に示す注射器29は、
プランジャ7の先端に弾性材料(ゴム等)のガスケット
31を備えたもので、ガスケット31の中央部には逃げ
孔27が形成されている。図7(A)に示すように、薬
液Mを吸入し、プランジャ7を押して注射を行い、図7
(B)に示すように、ガスケット31の先端が外筒5の
先端面に当ったところでプランジャ7は制止され、注射
が完了する。このとき、注射針3の突出部分3bは逃げ
孔27内に収容され、注射針3は押圧されない。注射
後、さらにプランジャ7を押すと、その押圧力によって
ガスケット31が圧縮され、逃げ孔27はつぶされ、図
7(C)に示すように圧縮されたガスケット31によっ
て注射針3の後端3aが押され、注射針3は外筒5から
取り外される。(Embodiment 6) A syringe 29 shown in FIG.
A gasket 31 made of an elastic material (rubber or the like) is provided at the tip of the plunger 7, and an escape hole 27 is formed in the center of the gasket 31. As shown in FIG. 7 (A), the drug solution M is inhaled, and the plunger 7 is pushed to perform injection.
As shown in (B), when the distal end of the gasket 31 hits the distal end surface of the outer cylinder 5, the plunger 7 is stopped, and the injection is completed. At this time, the protruding portion 3b of the injection needle 3 is accommodated in the escape hole 27, and the injection needle 3 is not pressed. When the plunger 7 is further pressed after the injection, the gasket 31 is compressed by the pressing force, the escape hole 27 is crushed, and the rear end 3a of the injection needle 3 is compressed by the compressed gasket 31 as shown in FIG. When pushed, the injection needle 3 is removed from the outer cylinder 5.
【0015】(実施形態7)上記各例においては、注射
針3の後端3aをハブ9から後方へ突出させたが、それ
に代ってプランジャ7の先端から軸を突出させ、その軸
によって注射針を押し出すようにしてもよい。図8
(A)の注射器33はその例を示し、プランジャ7の先
端7aからさらに軸7cを延して形成した。注射完了後
において、押すと軸7cがハブ9を押し、注射針3が外
筒5から取り外される。図8(B)の注射器35におい
ては、軸37をアダプタ形式(取り外し可能)にして注
射針3とプランジャ先端7aとの間に配置する。そうす
れば、既存の注射器に何ら手を加えること無く、軸37
を1本追加するだけで本発明の注射器を実現することが
できる。なお、図8の注射器33,35に、図3,4に
示すストッパ19,23を設けてもよく、そうすれば、
注射完了時にプランジャ7を制止させ、軸7c,37が
注射針3を押すことを防止できる。(Embodiment 7) In each of the above examples, the rear end 3a of the injection needle 3 is projected rearward from the hub 9, but instead a shaft is projected from the tip of the plunger 7, and the injection is performed by the shaft. The needle may be pushed out. FIG.
(A) shows an example of the syringe 33, which is formed by further extending the shaft 7c from the tip 7a of the plunger 7. After the injection is completed, when pressed, the shaft 7c pushes the hub 9, and the injection needle 3 is removed from the outer cylinder 5. In the syringe 35 of FIG. 8 (B), the shaft 37 is arranged between the injection needle 3 and the plunger tip 7a in the form of an adapter (removable). Then, without changing the existing syringe, the shaft 37
The syringe of the present invention can be realized only by adding one. The stoppers 19 and 23 shown in FIGS. 3 and 4 may be provided in the syringes 33 and 35 in FIG.
When the injection is completed, the plunger 7 is stopped to prevent the shafts 7c and 37 from pushing the injection needle 3.
【0016】[0016]
【発明の効果】以上説明したとおり、本発明によれば、
注射後、簡単な構成によって注射針を外筒から取り外す
ことができる。As described above, according to the present invention,
After the injection, the injection needle can be removed from the outer cylinder with a simple configuration.
【図1】本発明の実施形態1を説明する図。FIG. 1 illustrates a first embodiment of the present invention.
【図2】実施形態2を説明する図。FIG. 2 is a diagram illustrating a second embodiment.
【図3】実施形態3を説明する図。FIG. 3 is a diagram illustrating a third embodiment.
【図4】実施形態4を説明する図。FIG. 4 is a diagram illustrating a fourth embodiment.
【図5】実施形態5を説明する図。FIG. 5 is a diagram illustrating a fifth embodiment.
【図6】実施形態5のプランジャの斜視図。FIG. 6 is a perspective view of a plunger according to a fifth embodiment.
【図7】実施形態6を説明する図。FIG. 7 is a diagram illustrating a sixth embodiment.
【図8】実施形態6を説明する図。FIG. 8 is a diagram illustrating a sixth embodiment.
1,13,17,21,25,29,33,35 注射
器 3 注射針 3a 注射針の後端 3b 注射針の突出部分 5 外筒 7 プランジャ 9 ハブ 15,19,23 ストッパ1,13,17,21,25,29,33,35 Syringe 3 Injection needle 3a Rear end of injection needle 3b Projection of injection needle 5 Outer cylinder 7 Plunger 9 Hub 15,19,23 Stopper
Claims (5)
外筒内に挿入されるプランジャとを備えた注射器におい
て、前記注射針の後端を前記外筒内に突出させたことを
特徴とする注射器。1. A syringe provided with an outer cylinder having an injection needle attached to the tip and a plunger inserted into the outer cylinder, wherein the rear end of the injection needle is projected into the outer cylinder. And a syringe.
前記注射針の後端を押さないように前記プランジャを制
止させる制止手段を設けた請求項1に記載の注射器。2. The syringe according to claim 1, further comprising a stopping means for stopping the plunger so that the plunger does not push the rear end of the injection needle when the injection is completed.
突出部分を収容する逃げ孔を形成した請求項1に記載の
注射器。3. The syringe according to claim 1, wherein an escape hole for accommodating a protruding portion of the injection needle is formed at a tip of the plunger.
え、前記ガスケットに、前記注射針の突出部分を収容す
る逃げ孔を形成した請求項3に記載の注射器。4. The syringe according to claim 3, wherein a gasket is provided at a tip of the plunger, and a relief hole for accommodating a protruding portion of the injection needle is formed in the gasket.
外筒内に挿入されるプランジャとを備えた注射器におい
て、前記プランジャの先方に前記注射針を押出すための
軸を配置したことを特徴とする注射器。5. A syringe provided with an outer cylinder having an injection needle attached to a distal end thereof, and a plunger inserted into the outer cylinder, wherein a shaft for pushing the injection needle is disposed ahead of the plunger. A syringe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2000293856A JP2002102346A (en) | 2000-09-27 | 2000-09-27 | Syringe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000293856A JP2002102346A (en) | 2000-09-27 | 2000-09-27 | Syringe |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2002102346A true JP2002102346A (en) | 2002-04-09 |
Family
ID=18776571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000293856A Pending JP2002102346A (en) | 2000-09-27 | 2000-09-27 | Syringe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2002102346A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01122752U (en) * | 1988-02-15 | 1989-08-21 | ||
US4976693A (en) * | 1989-12-14 | 1990-12-11 | Haast William E | Degradable syringe |
-
2000
- 2000-09-27 JP JP2000293856A patent/JP2002102346A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01122752U (en) * | 1988-02-15 | 1989-08-21 | ||
US4976693A (en) * | 1989-12-14 | 1990-12-11 | Haast William E | Degradable syringe |
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