JP6416973B1 - Syringe - Google Patents
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- JP6416973B1 JP6416973B1 JP2017083720A JP2017083720A JP6416973B1 JP 6416973 B1 JP6416973 B1 JP 6416973B1 JP 2017083720 A JP2017083720 A JP 2017083720A JP 2017083720 A JP2017083720 A JP 2017083720A JP 6416973 B1 JP6416973 B1 JP 6416973B1
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- gasket
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Abstract
【課題】所定量の薬液を吸引した注射器のプランジャ／ガスケットの戻りを抑制する。【解決手段】前端部に注射針取付部７を備えた注射器本体２、注射器本体２内を前後に摺動可能なガスケット３、前記ガスケット３に接続されたプランジャ４を備えた注射器１であって、前記取付部７に注射針６を取り付けて前記プランジャ４を引いて薬液１０を注射器内に取り込んだときに、薬液１０を含む空間の陰圧による前記ガスケット３の注射針６側への戻りを防止することができる戻り防止機構５を備えた、注射器。【選択図】図１An object of the present invention is to suppress the return of a plunger / gasket of a syringe that has sucked a predetermined amount of drug solution. A syringe body including a syringe body having a syringe mounting portion at a front end, a gasket slidable back and forth within the syringe body, and a plunger connected to the gasket. When the injection needle 6 is attached to the attachment portion 7 and the plunger 4 is pulled to take the chemical solution 10 into the syringe, the gasket 3 is returned to the injection needle 6 side by the negative pressure in the space containing the chemical solution 10. A syringe provided with an anti-return mechanism 5 that can be prevented. [Selection] Figure 1
Description
本発明は、注射器に関する。 The present invention relates to a syringe.
医療現場で使用されている注射器は、目的に合った薬液の密封容器から薬液を吸引して使用する。バイアルなどの密封容器から薬液を注射器内に吸引すると、注射器内が陰圧になるためプランジャが前方(注射針の方向)に動こうとする。プランジャが前方に動くと注射針から薬液が漏れるので、医師、看護師等はプランジャが動かないようにプランジャを保持する必要があり、負担となっていた。 A syringe used in a medical field is used by sucking a chemical solution from a sealed container of a chemical solution suitable for the purpose. When a drug solution is sucked into a syringe from a sealed container such as a vial, the inside of the syringe becomes negative pressure, so the plunger tries to move forward (in the direction of the injection needle). When the plunger moves forward, the drug solution leaks from the injection needle. Therefore, doctors, nurses and the like need to hold the plunger so that the plunger does not move, which is a burden.
本発明は、所定量の薬液を吸引した注射器のプランジャ／ガスケットの戻りを抑制することを目的とする。 An object of this invention is to suppress the return | return of the plunger / gasket of the syringe which attracted | sucked the predetermined amount of chemical | medical solutions.
本発明は、以下の注射器を提供するものである。
項１. 前端部に注射針取付部７を備えた注射器本体２、注射器本体２内を前後に摺動可能なガスケット３、前記ガスケット３に接続されたプランジャ４を備えた注射器１であって、前記取付部７に注射針６を取り付けて前記プランジャ４を引いて薬液１０を注射器内に取り込んだときに、薬液１０を含む空間の陰圧による前記ガスケット３の注射針６側への戻りを防止することができる戻り防止機構５を備えた、注射器。
項２. 前記戻り防止機構５は、プランジャ４の少なくとも１つの係合部４ａと、前記係合部４ａに係合する注射器本体２の少なくとも１つの柔軟な突部２ａから構成され、前記戻り防止機構５はプランジャ４を静止した状態ではプランジャ４の移動を防止することができるが、強く押す又は強く引いたときにプランジャ４の移動を妨げないものである、項１に記載の注射器。
項３. 前記突部２ａは、注射器本体の目盛り２ｂに対応する位置に設けられる、項２に記載の注射器。
項４. 前記戻り防止機構５は、注射器本体２の外部に存在するプランジャ４の係合部４ａと注射器本体２の外側の突部２ａから構成される、項１に記載の注射器。
項５. プランジャ４を回転することで、プランジャ４と注射器本体２の係合部４ａ、２ａが係合位置又は非係合位置をとることができる、項１に記載の注射器。
The present invention provides the following syringes.
Item 1. A syringe body 1 including a syringe body 2 having a syringe needle attachment portion 7 at a front end, a gasket 3 slidable back and forth in the syringe body 2, and a plunger 4 connected to the gasket 3, When the injection needle 6 is attached to the attachment portion 7 and the plunger 4 is pulled to take the drug solution 10 into the syringe, the gasket 3 is prevented from returning to the injection needle 6 side due to the negative pressure in the space containing the drug solution 10. Syringe with anti-return mechanism 5 that can.
Item 2. The return prevention mechanism 5 includes at least one engaging portion 4a of the plunger 4 and at least one flexible protrusion 2a of the syringe body 2 that engages with the engaging portion 4a. Item 2. The syringe according to Item 1, wherein the mechanism 5 can prevent the plunger 4 from moving when the plunger 4 is stationary, but does not hinder the movement of the plunger 4 when the plunger 4 is strongly pressed or pulled strongly.
Item 3. The syringe according to Item 2, wherein the protrusion 2a is provided at a position corresponding to the scale 2b of the syringe body.
Item 4. The syringe according to Item 1, wherein the return prevention mechanism 5 includes an engaging portion 4a of the plunger 4 existing outside the syringe body 2 and a protrusion 2a outside the syringe body 2.
Item 5. The syringe according to item 1, wherein the plunger 4 and the engaging portions 4a and 2a of the syringe body 2 can be engaged or disengaged by rotating the plunger 4.
本発明の注射器は、薬液を吸引した後にプランジャ／ガスケットの戻りを止めることができるので、医師、看護師等の負担が軽減される。 The syringe of the present invention can stop the return of the plunger / gasket after aspirating the drug solution, so the burden on the doctor, nurse, etc. is reduced.
図１に示すように、本発明の注射器１は、円筒状の注射器本体２、注射器本体２内を前後に摺動可能なガスケット３、ガスケット３に接続されたプランジャ４、戻り防止機構５を備えている。注射器本体２の前端側には注射針６を取り付けるための注射針取付部７が設けられ、注射器本体２の後端側にはフランジ８が設けられている。注射針６は基部９を注射器取付部７に嵌合することで取り付けられる。 As shown in FIG. 1, a syringe 1 of the present invention includes a cylindrical syringe body 2, a gasket 3 that can slide back and forth in the syringe body 2, a plunger 4 connected to the gasket 3, and a return prevention mechanism 5. ing. A syringe mounting portion 7 for mounting the syringe needle 6 is provided on the front end side of the syringe body 2, and a flange 8 is provided on the rear end side of the syringe body 2. The injection needle 6 is attached by fitting the base portion 9 to the syringe attachment portion 7.
図１において、戻り防止機構５はプランジャ４の係合部４ａと、前記係合部４ａに係合する注射器本体２の複数の柔軟な突部２ａから構成され、前記突部２ａは目盛り２ｂに合わせて一定の間隔で設けられている。注射針６を取り付けてプランジャ４を引くことによりバイアル１１から薬液１０を注射器本体２とガスケット３で囲まれる空間内に吸引することができる。このとき、薬液を含む空間は陰圧になるのでプランジャ及びガスケットは前端側に引っ張られる。しかしながら、プランジャ４の係合部４ａと注射器本体２の突部２ａを係合させることにより、ガスケット３とプランジャ４は前端側への移動を抑制される。従来は、薬液の吸引後、医療従事者がプランジャ４を手で押さえ、プランジャ４の移動による薬液の漏れを防止していたが、本発明では戻り防止機構によりガスケット３及びプランジャ４の移動が抑制されるので、医療従事者の負担を軽減することができる。 In FIG. 1, the return prevention mechanism 5 includes an engaging portion 4a of a plunger 4 and a plurality of flexible protrusions 2a of the syringe body 2 engaged with the engaging portion 4a. The protrusion 2a is formed on a scale 2b. Together, they are provided at regular intervals. By attaching the injection needle 6 and pulling the plunger 4, the drug solution 10 can be sucked from the vial 11 into the space surrounded by the syringe body 2 and the gasket 3. At this time, since the space containing the chemical liquid becomes negative pressure, the plunger and the gasket are pulled to the front end side. However, by engaging the engaging portion 4a of the plunger 4 and the protruding portion 2a of the syringe body 2, the gasket 3 and the plunger 4 are restrained from moving toward the front end side. Conventionally, after a medical solution is sucked, a medical worker holds the plunger 4 by hand to prevent the chemical solution from leaking due to the movement of the plunger 4, but in the present invention, the movement of the gasket 3 and the plunger 4 is suppressed by the return prevention mechanism. Therefore, the burden on the medical staff can be reduced.
図２は、注射器本体２の外表面に突部２ａを設け、プランジャ４の係合部４ａをプランジャの後端からプランジャ４と平行に、かつ、注射器本体２の外表面の突部２ａと係合できるように形成している。プランジャ４は係合部４ａが突部２ａと係合する位置で止まる。突部２ａを目盛りに合わせて形成することで、薬液を一定量注射器本体内に吸引することができる。プランジャの係合部４ａは薬液を吸引又は放出する場合には、フランジ８と係合しない位置で動かすことができ、プランジャの位置を止める場合にはフランジ８と係合するようにプランジャを回転することができる。 FIG. 2 shows that a protrusion 2 a is provided on the outer surface of the syringe body 2, and the engaging portion 4 a of the plunger 4 is parallel to the plunger 4 from the rear end of the plunger and is engaged with the protrusion 2 a on the outer surface of the syringe body 2. It is formed so that it can be combined. The plunger 4 stops at a position where the engaging portion 4a engages with the protruding portion 2a. By forming the protrusion 2a in accordance with the scale, a certain amount of the drug solution can be sucked into the syringe body. The plunger engaging portion 4a can be moved in a position where it does not engage with the flange 8 when sucking or discharging the chemical solution, and rotates the plunger so as to engage with the flange 8 when stopping the position of the plunger. be able to.
１ 注射器 ２ 注射器本体 ２ａ 突部 ２ｂ 目盛り
３ ガスケット ４ プランジャ ４ａ 係合部 ５ 戻り防止機構
６ 注射針 ７ 注射針取付部 ８ フランジ ９ 基部 １０薬液
１１ バイアル
DESCRIPTION OF SYMBOLS 1 Syringe 2 Syringe main body 2a Protrusion part 2b Scale 3 Gasket 4 Plunger 4a Engagement part 5 Return prevention mechanism 6 Injection needle 7 Injection needle attachment part 8 Flange 9 Base 10 Drug solution 11 Vials
Claims (1)
前記戻り防止機構５は、前記プランジャ４の少なくとも１つの係合部４ａと、前記係合部４ａに係合する前記注射器本体２の少なくとも１つの柔軟な突部２ａから構成され、前記戻り防止機構５は前記プランジャ４を静止した状態では前記プランジャ４の移動を防止することができるが、強く押す又は強く引いたときに前記プランジャ４の移動を妨げないものであり、
前記突部２ａは、前記注射器本体２の目盛り２ｂに対応する位置であって、前記注射器本体２の内側に設けられる、注射器。 Syringe body 2 provided with a needle mounting portion 7 to the front end, the syringe slidable gasket 3 inside the body 2 in the longitudinal, a syringe 1 having a plunger 4 connected to the gasket 3, the injection the injection needle 6 mounted on the needle mount 7 by pulling the plunger 4 when incorporating the drug solution 10 in said syringe 1, to the injection needle 6 side of the gasket 3 by negative pressure of the space containing the liquid chemical 10 A return prevention mechanism 5 that can prevent the return of
The return prevention mechanism 5 includes at least one engagement portion 4a of the plunger 4 and at least one flexible protrusion 2a of the syringe body 2 that engages with the engagement portion 4a. 5 can prevent the movement of the plunger 4 when the plunger 4 is stationary, but does not hinder the movement of the plunger 4 when strongly pressed or pulled.
The protrusion 2 a is a syringe provided at the position corresponding to the scale 2 b of the syringe main body 2 and on the inside of the syringe main body 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017083720A JP6416973B1 (en) | 2017-04-20 | 2017-04-20 | Syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017083720A JP6416973B1 (en) | 2017-04-20 | 2017-04-20 | Syringe |
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| Publication Number | Publication Date |
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| JP6416973B1 true JP6416973B1 (en) | 2018-10-31 |
| JP2018175713A JP2018175713A (en) | 2018-11-15 |
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| JP2017083720A Active JP6416973B1 (en) | 2017-04-20 | 2017-04-20 | Syringe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2576694B (en) * | 2018-06-14 | 2022-09-07 | Janssen Pharmaceuticals Inc | Pharmaceutical product preparation device and method |
| JP6732976B1 (en) * | 2019-02-08 | 2020-07-29 | 株式会社塚田メディカル・リサーチ | Plunger lock adapter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2899327A1 (en) * | 2013-01-30 | 2014-08-07 | Allergan, Inc. | Dosing injector |
| JP6569412B2 (en) * | 2015-09-11 | 2019-09-04 | ニプロ株式会社 | Drug administration device |
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