JP3116541U - Safety syringe - Google Patents

Safety syringe Download PDF

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JP3116541U
JP3116541U JP2005007437U JP2005007437U JP3116541U JP 3116541 U JP3116541 U JP 3116541U JP 2005007437 U JP2005007437 U JP 2005007437U JP 2005007437 U JP2005007437 U JP 2005007437U JP 3116541 U JP3116541 U JP 3116541U
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syringe
plunger rod
needle head
sheet
rear stage
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錦綢 蔡
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錦綢 蔡
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; 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
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5066Means for preventing re-use by disconnection of piston and piston-rod
    • A61M2005/5073Means for preventing re-use by disconnection of piston and piston-rod by breaking or rupturing the connection parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; 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
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/3213Caps placed axially onto the needle, e.g. equipped with finger protection guards

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  • 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

【課題】安全注射器の提供。
【解決手段】プランジャロッド4をシリンジ1外に向けて移動させれば、ニードルヘッドシート2とニードルヘッド3が併せて引っ張られシリンジ1内に内蔵され、安全の目的が達成される。プランジャロッド4には切断部44が設けられ、且つプランジャロッド4の後段内は中空部432を呈し、切断部44によりプランジャロッド4を切断してシリンジ1の長さを短縮でき、プランジャロッド4後段の各リブ43の後端近く外周に、それぞれ係止溝431が形成され、プランジャロッド4の後段をシリンジ1の前端より最後まで挿入し、シリンジ1前端の口縁11とプランジャロッド4の後段リブ43の各係止溝431と係合することで、切断後のプランジャロッド4後段を再度シリンジ1内に収容し大幅に廃棄後の体積を縮小できる。
【選択図】図1
A safety syringe is provided.
When a plunger rod 4 is moved toward the outside of a syringe 1, a needle head seat 2 and a needle head 3 are pulled together and incorporated in the syringe 1 to achieve a safety purpose. The plunger rod 4 is provided with a cutting portion 44, and a hollow portion 432 is formed in the rear stage of the plunger rod 4, and the length of the syringe 1 can be shortened by cutting the plunger rod 4 by the cutting portion 44. A locking groove 431 is formed on the outer periphery near the rear end of each of the ribs 43, and the rear stage of the plunger rod 4 is inserted from the front end of the syringe 1 to the end. The mouth edge 11 of the front end of the syringe 1 and the rear stage rib of the plunger rod 4 By engaging with the respective locking grooves 431 of 43, the post-cut plunger rod 4 subsequent stage is accommodated again in the syringe 1 and the volume after disposal can be greatly reduced.
[Selection] Figure 1

Description

本考案は安全注射器に係り、特に、注射完了時にニードルヘッドをプランジャロッド内に内蔵でき、並びに切断したプランジャロッドの切断部をシリンジ前端より挿入でき、操作が簡便で廃棄物体積を増さない安全注射器の設計に関する。   The present invention relates to a safety syringe, and in particular, a needle head can be built into a plunger rod when injection is completed, and a cut portion of the cut plunger rod can be inserted from the front end of the syringe, which is easy to operate and does not increase waste volume. Relates to the design of syringes.

本願は特許文献1に記載の安全注射器を更に改良したものである。特許文献1の設計は、注射時にニードル退出プッシュレバー末端を押圧してプランジャロッドをシリンジ内に向けて底端まで推進させる時、このニードル退出プルレバー端部の弾性爪部がニードルヘッドシートの内孔に進入し並びにフック状部と係合し、このとき、ニードル退出プルレバーを外向きに移動させれば、ニードルヘッドシートとニードルヘッドが併せて引っ張られプルレバー内に内蔵され、安全の目的が達成される。ニードル退出プルレバーの中段部には切断部が設けられ、この部分で切断することでシリンジの長さを短縮でき、ニードル退出プルレバーのリブ中央に細長のスリットが形成され、切断後の2段のニードル退出プルレバーのリブガそれぞれ独立し且つ弾性を呈して湾曲する特性を有し、切断後のニードル退出プルレバーがプランジャロッド内に挿入されて僅かにねじれ、即ち2段のニードル退出プルレバーのもともと対向するリブが相互に位置ずれし、切断されたニードル退出プルレバーがプランジャロッド内に収容され、廃棄後の体積を大幅に縮小する。   This application is a further improvement of the safety syringe described in Patent Document 1. In the design of Patent Document 1, when the needle withdrawal push lever end is pressed at the time of injection and the plunger rod is pushed into the syringe toward the bottom end, the elastic claw at the end of the needle withdrawal pull lever is the inner hole of the needle head seat. When the needle exit pull lever is moved outward at this time, the needle head seat and the needle head are pulled together and incorporated in the pull lever, and the safety purpose is achieved. The A cutting part is provided in the middle part of the needle withdrawal pull lever, and the length of the syringe can be shortened by cutting at this part, and an elongated slit is formed in the center of the rib of the needle withdrawal pull lever. Each of the pull-out pull lever ribs has an independent and elastic curve characteristic, and the needle pull-out pull lever after cutting is inserted into the plunger rod and slightly twisted, that is, the ribs that face the two-stage needle pull-out pull lever are originally opposed to each other. Misaligned and cut needle withdrawal pull levers are housed in the plunger rod, greatly reducing the volume after disposal.

この従来の技術はそれ以前の安全注射器に較べ、進歩性と機能の向上を達成しているが、ニードル退出プルレバー及びプランジャロッドを具備するため生産コストが高くなる問題がある。   Although this conventional technique achieves an inventive step and an improvement in function as compared with the previous safety syringe, there is a problem that the production cost becomes high because the needle withdrawal pull lever and the plunger rod are provided.

もう一つの周知の技術として特許文献2に記載のものがあり、それはプランジャロッドによりニードルヘッドシートがシリンジ内に引き戻された後、プランジャロッドが切断部分で切断され、さらに切断されたプランジャロッドがシリンジ前方より挿入され、並びにプランジャロッド端部の円盤が針先を押圧して湾曲変形させる。ただし一般に、注射用ニードルのほとんどはスチール製であり、相当な剛性を有するため、押圧力をプランジャロッドに加えて針先を湾曲変形させるには相当大きな力が必要であり、一般の女性看護士にとっては相当な程度の問題を形成し、針先を押圧して湾曲変形させる状況を形成できないこともある。   Another well-known technique is described in Patent Document 2, in which the plunger head is cut at the cutting portion after the needle head seat is pulled back into the syringe by the plunger rod, and the further cut plunger rod is the syringe. The disk is inserted from the front, and the disk at the end of the plunger rod presses the needle tip to bend and deform. However, in general, most of the injection needles are made of steel and have considerable rigidity. Therefore, a large amount of force is required to deform the needle tip by applying a pressing force to the plunger rod. For this reason, a considerable degree of problem may be formed, and a situation where the needle tip is pressed and deformed by bending may not be formed.

台湾特許第90202023号Taiwan Patent No. 90202023 台湾特許第84213910号Taiwan Patent No. 84213910

本考案は一種の安全注射器を提供することを目的とし、それは、注射完了時にニードルヘッドをプランジャロッド内に内蔵でき、並びに切断したプランジャロッドの切断部をシリンジ前端より挿入でき、操作が簡便で廃棄物体積を増さない安全注射器であるものとする。   The purpose of the present invention is to provide a kind of safety syringe, which can incorporate the needle head into the plunger rod when the injection is completed, and can insert the cut portion of the plunger rod from the front end of the syringe, which is easy to operate and discarded. It shall be a safety syringe that does not increase the volume of material.

請求項1の考案は、安全注射器において、
シリンジであって、シリンジ端部に口縁が形成され、該口縁近くのシリンジ内に位置決めフランジが形成された、上記シリンジと、
ニードルヘッドシートであって、一端にニードルヘッドと嵌合される嵌合端が形成され、ニードルヘッドシートがシリンジの孔内に組み合わされた後、ニードルヘッドシートがシリンジの前端に位置決めされ、並びにニードルヘッドシートの漏れ止めが達成され、ニードルヘッドシートの内端部分に複数の弾性爪で構成された係合孔が設けられた、上記ニードルヘッドシートと、
プランジャロッドであって、前述のシリンジ内に挿入され、プランジャロッドの前端に係止ヘッド部が形成されて、ニードルヘッドシートの係合孔と係合後にニードルヘッドシートがシリンジ内に引き込まれて内蔵され、プランジャロッド前端にピストンヘッドが嵌合され、プランジャロッドに切断部が設けられ、且つプランジャロッドの後段内が中空部を呈し並びに複数のリブが形成され、該切断部によりプランジャロッドが切断されてシリンジの長さが短縮され、並びに切断後のプランジャロッドの後段がシリンジ前端より末端まで挿入された、上記プランジャロッドと、
を包含し、注射時にプランジャロッドが押圧されてシリンジ内を推進して底端に至る時、プランジャロッド端部の係止ヘッド部がニードルヘッドシートの係合孔内に進入して係合し、このとき、プランジャロッドを外向きに引っ張るとニードルヘッドシートとニードルヘッドが併せて引っ張られてシリンジ内に内蔵され、安全機能を達成し、またプランジャロッドの後段を切断し、シリンジ前端より末端まで挿入して切断後のプランジャロッドをさらにシリンジ内に収容できることを特徴とする、安全注射器としている。
請求項2の考案は、請求項1記載の安全注射器において、プランジャロッドの切断部後段の各リブの後端近くの外縁に係止溝が形成され、切断後のプランジャロッドの後段をシリンジ前端より末端まで挿入してシリンジ前端の口縁とプランジャロッド後段のリブの係止溝を係合し位置決めできることを特徴とする、安全注射器としている。
請求項3の考案は、安全注射器において、
シリンジであって、シリンジ端部に口縁が形成され、該口縁近くのシリンジ内に位置決めフランジが形成された、上記シリンジと、
ニードルヘッドシートであって、一端にニードルヘッドと嵌合される嵌合端が形成され、ニードルヘッドシートの周縁に位置決め環状溝と漏れ止めパッキングが設けられ、ニードルヘッドシートがシリンジの孔内に組み合わされた後、ニードルヘッドシート周縁の位置決め環状溝がシリンジ前端孔内に形成された位置決めフランジ部分に位置決めされ、ニードルヘッドシートがシリンジの前端に位置決めされ、並びにニードルヘッドシートの漏れ止め機能が達成され、ニードルヘッドシートの内端部分に係合孔が設けられた、上記ニードルヘッドシートと、
プランジャロッドであって、前述のシリンジ内に挿入され、プランジャロッドの前端に複数の弾性爪で構成された係止部が形成されて、前述のニードルヘッドシートの係合孔と係合後にニードルヘッドシートをシリンジ内に引き込め、プランジャロッド前端にピストンヘッドが嵌合され、プランジャロッドに切断部が設けられ、且つプランジャロッドの後段内が中空部を呈し並びに複数のリブが形成され、切断部によりプランジャロッドを切断しシリンジの長さを短縮でき、並びに切断後のプランジャロッドの後段をシリンジ前端より末端まで挿入できることを特徴とする、安全注射器としている。
請求項4の考案は、請求項3記載の安全注射器において、プランジャロッドの切断部後段の各リブの後端近くの外縁に係止溝が形成され、切断後のプランジャロッドの後段をシリンジ前端より末端まで挿入してシリンジ前端の口縁とプランジャロッド後段のリブの係止溝を係合し位置決めできることを特徴とする、安全注射器としている。
The device of claim 1 is a safety syringe,
A syringe having a lip formed at an end of the syringe and a positioning flange formed in the syringe near the lip;
The needle head sheet is formed with a fitting end to be fitted to the needle head at one end, and the needle head sheet is positioned in the front end of the syringe after the needle head sheet is assembled in the hole of the syringe, and the needle The needle head sheet, in which the leakage prevention of the head sheet is achieved, and an engagement hole composed of a plurality of elastic claws is provided in the inner end portion of the needle head sheet;
A plunger rod, which is inserted into the above-described syringe, and a locking head portion is formed at the front end of the plunger rod, and the needle head sheet is drawn into the syringe after being engaged with the engagement hole of the needle head sheet. A piston head is fitted to the front end of the plunger rod, a cutting portion is provided in the plunger rod, a hollow portion is formed in the rear stage of the plunger rod, and a plurality of ribs are formed, and the plunger rod is cut by the cutting portion. The length of the syringe is shortened, and the plunger rod after cutting is inserted from the front end to the end of the syringe rod, and the plunger rod,
When the plunger rod is pushed during the injection and propelled in the syringe to reach the bottom end, the locking head portion of the plunger rod end enters the engagement hole of the needle head seat and engages, At this time, when the plunger rod is pulled outward, the needle head seat and needle head are pulled together and built into the syringe, achieving a safety function, and cutting the rear stage of the plunger rod, inserting it from the front end of the syringe to the end Thus, the safety syringe is characterized in that the plunger rod after cutting can be further accommodated in the syringe.
The invention of claim 2 is the safety syringe according to claim 1, wherein a locking groove is formed in the outer edge near the rear end of each rib at the rear stage of the cutting portion of the plunger rod. The safety syringe is characterized in that it can be inserted to the end to engage and position the mouth groove at the front end of the syringe and the locking groove of the rib at the rear stage of the plunger rod.
The device of claim 3 is a safety syringe,
A syringe having a lip formed at an end of the syringe and a positioning flange formed in the syringe near the lip;
The needle head sheet is formed with a fitting end that is fitted to the needle head at one end, a positioning annular groove and a leak-proof packing are provided at the periphery of the needle head sheet, and the needle head sheet is assembled in the syringe hole. After that, the positioning annular groove on the peripheral edge of the needle head sheet is positioned at the positioning flange portion formed in the syringe front end hole, the needle head sheet is positioned at the front end of the syringe, and the leakage prevention function of the needle head sheet is achieved. The needle head sheet provided with an engagement hole in the inner end portion of the needle head sheet;
A plunger rod, which is inserted into the above-described syringe, is formed with a locking portion composed of a plurality of elastic claws at the front end of the plunger rod, and is engaged with the engagement hole of the above-described needle head seat and then the needle head The sheet is drawn into the syringe, the piston head is fitted to the front end of the plunger rod, the cutting portion is provided in the plunger rod, the hollow portion is formed in the rear stage of the plunger rod, and a plurality of ribs are formed. A safety syringe is characterized in that the plunger rod can be cut to shorten the length of the syringe, and the post-cut plunger rod can be inserted from the front end to the end of the syringe.
According to a fourth aspect of the present invention, in the safety syringe according to the third aspect, a locking groove is formed on the outer edge near the rear end of each rib at the rear stage of the cutting portion of the plunger rod. The safety syringe is characterized in that it can be inserted to the end to engage and position the mouth groove at the front end of the syringe and the locking groove of the rib at the rear stage of the plunger rod.

本考案の長所は以下のとおりである。
1.プランジャロッドを押圧してそれをシリンジ内に向けて底端まで推進させる時、プランジャロッド端部の係止部がニードルヘッドシートの係止孔内に係合し、この時、プランジャロッドを外向きに引き出せばニードルヘッドシートとニードルヘッドが併せて引っ張られてシリンジ内に内蔵され、安全の目的が達成される。
2.プランジャロッドに切断部が設けられ、且つプランジャロッドの後段内は中空部を呈し、切断部によりプランジャロッドを切断してシリンジの長さを短縮でき、プランジャロッド後段のリブの後端近く外端に係止溝が形成され、プランジャロッドの後段をシリンジ前端より最後まで挿入し、シリンジ前端の口縁とプランジャロッドの後段リブの各係止溝と係合し、切断後のプランジャロッドを更にシリンジ内に収容し、相当な便利性を有するほか、大幅に廃棄後の体積を減らすことができる。
The advantages of the present invention are as follows.
1. When pushing the plunger rod and pushing it into the syringe to the bottom end, the latching portion of the plunger rod end engages in the latching hole of the needle head seat, and at this time the plunger rod faces outward When the needle head is pulled out, the needle head sheet and the needle head are pulled together and incorporated in the syringe, thereby achieving the safety purpose.
2. The plunger rod has a cutting part, and the inside of the rear stage of the plunger rod has a hollow part, and the length of the syringe can be shortened by cutting the plunger rod by the cutting part. A locking groove is formed, and the rear stage of the plunger rod is inserted from the front end of the syringe to the end, and is engaged with the locking groove of the mouth edge of the syringe front end and the rear stage rib of the plunger rod. In addition to having considerable convenience, the volume after disposal can be greatly reduced.

図1、図2及び図3に示されるように、本考案はシリンジ1内において、プランジャロッド4が設けられ、該プランジャロッド4の前端にプランジャロッド4の前端のピストンヘッド41を貫通する係止ヘッド部42が設けられ、シリンジ1の前端孔内に位置決めフランジ111が形成され、シリンジ1の前端孔内に周縁に漏れ止めパッキング211が取り付けられてニードルヘッド3のニードルヘッドシート2の嵌合に供され、並びにニードルヘッドシート2周縁に設けられた位置決め環状溝21がシリンジ1の前端孔内に形成された位置決めフランジ111部分に位置決めされ、ニードルヘッドシート2がシリンジ1の前端に位置決めされる。ニードルヘッドシート2の内端部分に複数の弾性爪23により構成されてプランジャロッド4の前端の係止ヘッド部42と嵌合される係合孔22が形成され、注射時にプランジャロッド4が押されてそれがシリンジ1内を推進し底端に至る時、プランジャロッド4の端部の係止ヘッド部42がニードルヘッドシート2の係合孔22内に進入して係合する。この時、プランジャロッド4をシリンジ1外に向けて移動させれば、ニードルヘッドシート2とニードルヘッド3が併せて引っ張られシリンジ1内に内蔵され、安全の目的が達成される。プランジャロッド4には切断部44が設けられ、且つプランジャロッド4の後段内は中空部432を呈し、切断部44によりプランジャロッド4を切断してシリンジ1の長さを短縮でき、プランジャロッド4後段の各リブ43の後端近く外周に、それぞれ係止溝431が形成され、プランジャロッド4の後段をシリンジ1の前端より最後まで挿入し、シリンジ1前端の口縁11とプランジャロッド4の後段リブ43の各係止溝431と係合することで、切断後のプランジャロッド4後段を再度シリンジ1内に収容し大幅に廃棄後の体積を縮小できる。さらに、本考案の別の実施例ではプランジャロッド4の前端部分に複数の弾性爪451で構成された係止部45が形成されて、ニードルヘッドシート2の係止孔24と係合し、この時、プランジャロッド4をシリンジ1外に向けて引っ張ると、ニードルヘッドシート2とニードルヘッド3が併せて引っ張られてシリンジ1内に内蔵され、安全の目的が達成される(図4と図5参照)。   As shown in FIGS. 1, 2, and 3, in the present invention, a plunger rod 4 is provided in a syringe 1, and the front end of the plunger rod 4 passes through a piston head 41 at the front end of the plunger rod 4. A head portion 42 is provided, a positioning flange 111 is formed in the front end hole of the syringe 1, and a leak-proof packing 211 is attached to the periphery of the front end hole of the syringe 1 to fit the needle head sheet 2 of the needle head 3. The positioning annular groove 21 provided on the periphery of the needle head sheet 2 is positioned at the positioning flange 111 formed in the front end hole of the syringe 1, and the needle head sheet 2 is positioned at the front end of the syringe 1. An engagement hole 22 is formed in the inner end portion of the needle head sheet 2 and is formed of a plurality of elastic claws 23 and is engaged with the locking head portion 42 at the front end of the plunger rod 4. The plunger rod 4 is pushed during injection. Then, when it pushes through the syringe 1 and reaches the bottom end, the locking head portion 42 at the end of the plunger rod 4 enters the engagement hole 22 of the needle head seat 2 and engages. At this time, if the plunger rod 4 is moved toward the outside of the syringe 1, the needle head seat 2 and the needle head 3 are pulled together and incorporated in the syringe 1, thereby achieving a safety purpose. The plunger rod 4 is provided with a cutting portion 44, and a hollow portion 432 is formed in the rear stage of the plunger rod 4, and the plunger rod 4 can be cut by the cutting portion 44 to shorten the length of the syringe 1. A locking groove 431 is formed on the outer periphery near the rear end of each rib 43, and the rear stage of the plunger rod 4 is inserted from the front end of the syringe 1 to the end. By engaging with the respective locking grooves 431 of 43, the post-cut plunger rod 4 subsequent stage is accommodated again in the syringe 1 and the volume after disposal can be greatly reduced. Furthermore, in another embodiment of the present invention, a locking portion 45 composed of a plurality of elastic claws 451 is formed at the front end portion of the plunger rod 4 and is engaged with the locking hole 24 of the needle head seat 2. When the plunger rod 4 is pulled toward the outside of the syringe 1, the needle head seat 2 and the needle head 3 are pulled together and incorporated in the syringe 1 to achieve the safety purpose (see FIGS. 4 and 5). ).

総合すると、本考案は使用に便利で、大幅に廃棄後の体積を縮小でき極めて良好な安全性を具えている。   Taken together, the present invention is convenient to use and can greatly reduce the volume after disposal, providing extremely good safety.

本考案の立体分解図である。It is a three-dimensional exploded view of the present invention. 本考案のプランジャロッドとシリンジの組合せ時の断面図である。It is sectional drawing at the time of the combination of the plunger rod and syringe of this invention. 本考案のプランジャロッドを引き戻してニードルヘッドシートをシリンジ内に引き込み、並びにプランジャロッドを切断部で切断し、プランジャロッド後段をシリンジ前端よりシリンジ内に挿入した時の断面図である。It is sectional drawing when pulling back the plunger rod of this invention, drawing in a needle head sheet | seat in a syringe, cutting a plunger rod in a cutting | disconnection part, and inserting the plunger rod back | latter stage in a syringe from the syringe front end. 本考案の別の実施例の断面図である。It is sectional drawing of another Example of this invention. 本考案の別の実施例のプランジャロッドを引き戻しニードルヘッドシートをシリンジ内に引き込み、並びにプランジャロッドを切断部で切断し、プランジャロッド後段をシリンジ前端よりシリンジ内に挿入した時の断面図である。It is sectional drawing when the plunger rod of another Example of this invention is pulled back, a needle head sheet | seat is drawn in in a syringe, and a plunger rod is cut | disconnected by a cutting | disconnection part, and the plunger rod back | latter stage is inserted in a syringe from the syringe front end.

符号の説明Explanation of symbols

1 シリンジ
11 口縁
111 位置決めフランジ
2 ニードルヘッドシート
21 位置決め環状溝
211 漏れ止めパッキング
22 係合孔
23 弾性爪
24 係止孔
3 ニードルヘッド
4 プランジャロッド
41 ピストンヘッド
42 係止ヘッド部
43 リブ
431 係止溝
432 中空部
44 切断部
45 係止部
451 弾性爪
DESCRIPTION OF SYMBOLS 1 Syringe 11 Mouth 111 Positioning flange 2 Needle head sheet | seat 21 Positioning annular groove 211 Leak-proof packing 22 Engagement hole 23 Elastic claw 24 Locking hole 3 Needle head 4 Plunger rod 41 Piston head 42 Locking head part 43 Rib 431 Locking Groove 432 Hollow portion 44 Cutting portion 45 Locking portion 451 Elastic claw

Claims (4)

安全注射器において、
シリンジであって、シリンジ端部に口縁が形成され、該口縁近くのシリンジ内に位置決めフランジが形成された、上記シリンジと、
ニードルヘッドシートであって、一端にニードルヘッドと嵌合される嵌合端が形成され、ニードルヘッドシートがシリンジの孔内に組み合わされた後、ニードルヘッドシートがシリンジの前端に位置決めされ、並びにニードルヘッドシートの漏れ止めが達成され、ニードルヘッドシートの内端部分に複数の弾性爪で構成された係合孔が設けられた、上記ニードルヘッドシートと、
プランジャロッドであって、前述のシリンジ内に挿入され、プランジャロッドの前端に係止ヘッド部が形成されて、ニードルヘッドシートの係合孔と係合後にニードルヘッドシートがシリンジ内に引き込まれて内蔵され、プランジャロッド前端にピストンヘッドが嵌合され、プランジャロッドに切断部が設けられ、且つプランジャロッドの後段内が中空部を呈し並びに複数のリブが形成され、該切断部によりプランジャロッドが切断されてシリンジの長さが短縮され、並びに切断後のプランジャロッドの後段がシリンジ前端より末端まで挿入された、上記プランジャロッドと、
を包含し、注射時にプランジャロッドが押圧されてシリンジ内を推進して底端に至る時、プランジャロッド端部の係止ヘッド部がニードルヘッドシートの係合孔内に進入して係合し、このとき、プランジャロッドを外向きに引っ張るとニードルヘッドシートとニードルヘッドが併せて引っ張られてシリンジ内に内蔵され、安全機能を達成し、またプランジャロッドの後段を切断し、シリンジ前端より末端まで挿入して切断後のプランジャロッドをさらにシリンジ内に収容できることを特徴とする、安全注射器。
In safety syringes,
A syringe having a lip formed at an end of the syringe and a positioning flange formed in the syringe near the lip;
The needle head sheet is formed with a fitting end to be fitted to the needle head at one end, and the needle head sheet is positioned in the front end of the syringe after the needle head sheet is assembled in the hole of the syringe, and the needle The needle head sheet, in which the leakage prevention of the head sheet is achieved, and an engagement hole composed of a plurality of elastic claws is provided in the inner end portion of the needle head sheet;
A plunger rod, which is inserted into the above-described syringe, and a locking head portion is formed at the front end of the plunger rod, and the needle head sheet is drawn into the syringe after being engaged with the engagement hole of the needle head sheet. A piston head is fitted to the front end of the plunger rod, a cutting portion is provided in the plunger rod, a hollow portion is formed in the rear stage of the plunger rod, and a plurality of ribs are formed, and the plunger rod is cut by the cutting portion. The length of the syringe is shortened, and the plunger rod after cutting is inserted from the front end to the end of the syringe rod, and the plunger rod,
When the plunger rod is pushed during the injection and propelled in the syringe to reach the bottom end, the locking head portion of the plunger rod end enters the engagement hole of the needle head seat and engages, At this time, when the plunger rod is pulled outward, the needle head seat and needle head are pulled together and built into the syringe, achieving a safety function, and cutting the rear stage of the plunger rod, inserting it from the front end of the syringe to the end A safety syringe, wherein the cut plunger rod can be further accommodated in a syringe.
請求項1記載の安全注射器において、プランジャロッドの切断部後段の各リブの後端近くの外縁に係止溝が形成され、切断後のプランジャロッドの後段をシリンジ前端より末端まで挿入してシリンジ前端の口縁とプランジャロッド後段のリブの係止溝を係合し位置決めできることを特徴とする、安全注射器。   2. The safety syringe according to claim 1, wherein a locking groove is formed at an outer edge near the rear end of each rib at the rear stage of the cutting portion of the plunger rod, and the rear stage of the cut plunger rod is inserted from the front end of the syringe to the end to insert the front end of the syringe. A safety syringe characterized by being able to engage and position an engaging edge of a rib of the rear stage of the plunger rod and a rib of the plunger rod. 安全注射器において、
シリンジであって、シリンジ端部に口縁が形成され、該口縁近くのシリンジ内に位置決めフランジが形成された、上記シリンジと、
ニードルヘッドシートであって、一端にニードルヘッドと嵌合される嵌合端が形成され、ニードルヘッドシートの周縁に位置決め環状溝と漏れ止めパッキングが設けられ、ニードルヘッドシートがシリンジの孔内に組み合わされた後、ニードルヘッドシート周縁の位置決め環状溝がシリンジ前端孔内に形成された位置決めフランジ部分に位置決めされ、ニードルヘッドシートがシリンジの前端に位置決めされ、並びにニードルヘッドシートの漏れ止め機能が達成され、ニードルヘッドシートの内端部分に係合孔が設けられた、上記ニードルヘッドシートと、
プランジャロッドであって、前述のシリンジ内に挿入され、プランジャロッドの前端に複数の弾性爪で構成された係止部が形成されて、前述のニードルヘッドシートの係合孔と係合後にニードルヘッドシートをシリンジ内に引き込め、プランジャロッド前端にピストンヘッドが嵌合され、プランジャロッドに切断部が設けられ、且つプランジャロッドの後段内が中空部を呈し並びに複数のリブが形成され、切断部によりプランジャロッドを切断しシリンジの長さを短縮でき、並びに切断後のプランジャロッドの後段をシリンジ前端より末端まで挿入できることを特徴とする、安全注射器。
In safety syringes,
A syringe having a lip formed at the end of the syringe and a positioning flange formed in the syringe near the lip;
The needle head sheet is formed with a fitting end that is fitted to the needle head at one end, a positioning annular groove and a leak-proof packing are provided at the periphery of the needle head sheet, and the needle head sheet is assembled in the syringe hole. After that, the positioning annular groove on the peripheral edge of the needle head sheet is positioned at the positioning flange portion formed in the syringe front end hole, the needle head sheet is positioned at the front end of the syringe, and the leakage prevention function of the needle head sheet is achieved. The needle head sheet provided with an engagement hole in the inner end portion of the needle head sheet;
A plunger rod, which is inserted into the above-described syringe, is formed with a locking portion composed of a plurality of elastic claws at the front end of the plunger rod, and is engaged with the engagement hole of the above-described needle head seat and then the needle head The sheet is drawn into the syringe, the piston head is fitted to the front end of the plunger rod, the cutting portion is provided in the plunger rod, the hollow portion is formed in the rear stage of the plunger rod, and a plurality of ribs are formed. A safety syringe characterized in that the plunger rod can be cut to reduce the length of the syringe, and the post-cut plunger rod can be inserted from the front end to the end of the syringe.
請求項3記載の安全注射器において、プランジャロッドの切断部後段の各リブの後端近くの外縁に係止溝が形成され、切断後のプランジャロッドの後段をシリンジ前端より末端まで挿入してシリンジ前端の口縁とプランジャロッド後段のリブの係止溝を係合し位置決めできることを特徴とする、安全注射器。
4. The safety syringe according to claim 3, wherein a locking groove is formed at an outer edge near the rear end of each rib at the rear stage of the cut portion of the plunger rod, and the rear stage of the cut plunger rod is inserted from the front end of the syringe to the end to insert the front end of the syringe. A safety syringe characterized by being able to engage and position an engaging edge of a rib of the rear stage of the plunger rod and a rib of the plunger rod.
JP2005007437U 2004-09-10 2005-09-09 Safety syringe Expired - Fee Related JP3116541U (en)

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