WO2018202025A1 - 一种医用注射器 - Google Patents

一种医用注射器 Download PDF

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Publication number
WO2018202025A1
WO2018202025A1 PCT/CN2018/085207 CN2018085207W WO2018202025A1 WO 2018202025 A1 WO2018202025 A1 WO 2018202025A1 CN 2018085207 W CN2018085207 W CN 2018085207W WO 2018202025 A1 WO2018202025 A1 WO 2018202025A1
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WO
WIPO (PCT)
Prior art keywords
safety
needle
positioning
medical injector
cover
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Application number
PCT/CN2018/085207
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English (en)
French (fr)
Inventor
张洪杰
王兴国
Original Assignee
贝普医疗科技有限公司
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Application filed by 贝普医疗科技有限公司 filed Critical 贝普医疗科技有限公司
Publication of WO2018202025A1 publication Critical patent/WO2018202025A1/zh

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    • 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
    • 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
    • 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
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • 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
    • A61M5/50—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5086—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 having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile for indicating if defective, used, tampered with or unsterile

Definitions

  • the present invention relates to a syringe, in particular a medical injector, which can be used for the injection of insulin, but is not limited thereto.
  • a common medical syringe is generally composed of a tube portion and a needle tube which is provided at the front portion of the tube portion for piercing an injection portion for storing a liquid medicine to be injected. After the injection is completed, the needle tube is removed from the front portion of the tube portion, and after being sterilized, it is reused.
  • the needle tube is directly placed on the tube portion, and after use, it will be destroyed to avoid subsequent repeated use and medical hazards.
  • conventional insulin syringes and pen insulin syringes are currently in common use.
  • the design flaw of the insulin syringe itself is not only manifested in the appearance of the needle tip of the needle after the use is completed, but also has a greater safety hazard. That is to say, after it is used, it can be recycled and reused without destroying its own structure, thus laying a more serious safety hazard.
  • a medical injector includes a needle holder, a card holder, a safety cover and a needle tube.
  • the card holder is provided with a receiving cavity
  • the needle seat and the safety protective sleeve are respectively disposed at an upper portion and a lower portion of the card holder receiving cavity
  • the needle tube is disposed in the needle seat and extends downwardly
  • the safety cover can be moved up and down within the cartridge receiving cavity to cooperate with the injection operation of the needle.
  • a positioning arm is disposed in the card housing receiving cavity, and a locking portion extends from the end of the positioning arm
  • the safety protection sleeve is provided with a positioning step portion, and the positioning step portion and the positioning arm portion are Mating, the safety cover is in an initial position relative to the deck.
  • the upward movement of the safety protection sleeve in the card housing receiving cavity enables the safety protection sleeve to rotate, so that the positioning step portion is disengaged from the mating end of the positioning arm end portion.
  • the safety boot is in a working position relative to the deck.
  • the upper end of the safety protective cover is provided with a beveled turning guiding surface
  • the lower part of the needle seat is provided with a corresponding turning guiding surface
  • one side of the safety cover positioning step portion is provided with a guiding slope.
  • the upper end of the safety protective cover is provided with a limiting portion, and a positioning surface is defined between the upper end surface of the safety protective cover.
  • the side surface of the limiting portion is an arc surface.
  • the safety cover is further provided with a guiding groove.
  • the card housing receiving cavity is provided with a positioning rib for mating with the guiding groove.
  • an elastic member is disposed between the hub and the safety cover.
  • springs but are not limited to.
  • the device further includes a needle guard sleeve that is sleeved outside the card holder.
  • the present invention has the beneficial effects that the present invention relates to a medical syringe which adopts a newly designed safety protective cover structure and a card seat structure matched thereto, so that the syringe is finished after the injection.
  • the safety cover can extend out of the card seat and completely shield the end of the needle tube, thereby avoiding the safety problem that may be caused by the tip end of the needle tube being exposed after use.
  • the manner of matching between the safety cover and the card seat also enables the safety protection cover to retract to the chassis without protruding its structure after extending the card holder.
  • the medical injector can only be destroyed after being used, and can not be simply recycled and reused, thereby effectively avoiding medical accidents that may be caused by repeated recycling by incorrect recycling. .
  • FIG. 1 is a schematic structural view of a medical injector according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the structure of a safety protective cover of the medical injector shown in FIG. 1;
  • FIG. 3 is a schematic view of the medical syringe of FIG. 1 with a mating structure between the safety cover and the card holder, wherein the safety cover is in an unused initial position;
  • FIG. 4 is a schematic view showing the mating structure of the medical syringe of FIG. 1 between the safety cover and the card holder, wherein the safety cover is in a working position in a state of being used;
  • Figure 5 is a schematic view showing the matching structure between the safety protective cover and the card holder of the medical injector shown in Figure 1, wherein the safety protective cover is in another working position under use;
  • Figure 6 is a schematic view showing the mating structure between the safety protective cover and the card holder of the medical injector shown in Figure 1, wherein the safety protective cover is in a final position after completion of use;
  • FIG. 7 is a schematic view showing the mating structure between the safety protective cover and the card holder of the medical injector shown in FIG. 1.
  • FIG. 7 is a schematic view showing the mating structure between the safety protective cover and the card holder of the medical injector shown in FIG. 1.
  • an embodiment of the present invention provides a medical injector including a needle guard cover 1 , a needle holder 2 , a card holder 3 , a spring 4 , a safety cover 5 , and a needle tube 6 .
  • the card holder 3 is provided with a receiving cavity 30.
  • the needle holder 2 is disposed at an upper portion of the receiving cavity 30 of the card holder 3.
  • the safety protective cover 5 is disposed at a lower portion of the receiving cavity 30 of the card holder 3. And partially exposed outside the card holder 3.
  • the spring 4 is disposed between the hub 2 and the safety guard 5.
  • the needle tube 6 is disposed in the needle hub 2 and extends downwardly through the safety protective sleeve 5 with its end needle tip exposed outside the safety protective sleeve 5.
  • the needle guard cover 1 is sleeved on the outside of the card holder 3, and at the same time, the needle tube 2 is also completely shielded therein.
  • the safety protective cover 5 is a middle-through tubular structure, and two side portions are provided with positioning step portions 52 , and a guiding inclined surface 53 is disposed between the two positioning step portions 52 .
  • a guiding groove 522 is disposed below the positioning step portion 52.
  • the upper end of the safety cover 5 is provided with a beveled turning guide surface 54 and a limiting portion 56, and a positioning surface 562 is formed between the limiting portion 56 and the upper end surface of the safety protective cover 5.
  • the side surface of the limiting portion 56 is preferably a curved surface design.
  • the side wall of the receiving cavity 30 of the card holder 3 is bent downward to extend a positioning arm 31, and the bottom end of the positioning arm 31 extends toward the receiving cavity.
  • a card portion 311 is formed, and a positioning rib 32 is further disposed at a bottom position of the receiving cavity 30.
  • the positioning step portion 52 of the safety cover 5 is matched with the upper and lower sides of the locking portion 31 of the positioning arm 31, and the guiding groove 522 is coupled with the positioning protrusion 32 so that the safety cover 5 is limited.
  • the safety protective cover 5 of the medical injector is in an initial position in an unused state, and the needle tip of the end of the needle tube 6 is shielded by the needle guard cover 1 to prevent its exposure.
  • the lower portion of the needle hub 2 is also provided with a beveled turning guide surface 22 corresponding to the dial guiding surface 54 of the safety protective cover 5.
  • the dial guiding surface 22 of the hub 2 and the dial guiding surface 54 of the safety guard 5 may or may not be in contact with each other.
  • the needle guard 1 is removed such that the needle tip of the needle 6 penetrates into the skin at a predetermined location.
  • the safety protective sleeve 5 is moved upward under the reverse force of the skin, and the spring 4 is also compressed upward.
  • the dial guiding surface 22 of the needle hub 2 starts to contact with the dial guiding surface 54 of the safety protective sleeve 5, and as the safety protective sleeve 5 moves up, the two dialings are made.
  • the oblique contact between the turning guide faces 22, 54 is deepened, and the safety protective cover 5 is rotated as indicated by the direction of the arrow in the figure, which rotation causes the position of the positioning step portion 52 to change.
  • FIG. 5 illustrates the rotation of the safety cover 5 to the final position, wherein the positioning step 52 is turned away from the card portion 311, and the side portion thereof is also set.
  • the guiding slope 53 is turned to the upper side of the positioning arm 31, and the guiding groove 522 below it is turned to the position of the card portion 311 of the positioning arm 31, and the card portion 311 is received in the positioning concave In the slot 522, the positioning arm 31 loses the positioning restriction on the safety cover 5.
  • the needle tube 6 is pulled out from the skin, at which time the external force received by the safety protective cover 5 is removed, which is moved downward by the compression restoring force of the spring 4. Since the positioning step portion 52 has changed with the position of the card portion 311 of the positioning arm 31, the interlock between the two positions at the initial position is released, so that the safety cover 5 is directly The downward movement is not blocked by the positioning portion 31 of the positioning arm 31.
  • the safety cover 5 is to be pushed back to the working position, please refer to FIG. 7 , when the safety cover 5 is forced upwards, so that the limiting portion 56 and the upper end surface thereof are between The formed positioning surface 562 abuts against the bottom surface of the card portion 311, so that the card portion 311 is biased, and is deformed inward as indicated by an arrow in the figure.
  • the card portion 311 is deformed inwardly, such that the vertical surface thereof abuts against the curved surface of the limiting portion 56 on the side thereof, and thus, through the positioning surface 562 and the limit
  • the combination of the seats 56 blocks so that the card portion 311 can only stop at its position, or can only be slightly deformed, thereby firmly blocking the space in which the security cover 5 moves upward.
  • the safety cover 5 cannot continue to move upwards, and even if the external force is increased, it can only destroy its own structure. Therefore, it can be effectively prevented from being improperly recycled and used twice.
  • the invention relates to a medical injector which adopts a newly designed safety protective cover structure and a card seat structure matched thereto, so that after the injection is completed, the safety protective cover can protrude from the card seat, and The end of the needle tube is completely shielded, so that safety problems that may be caused by the tip end of the needle tube being exposed after use are prevented.
  • the manner of matching between the safety cover and the card seat also enables the safety protection cover to retract to the chassis without protruding its structure after extending the card holder.
  • the medical injector can only be destroyed after being used, and can not be simply recycled and reused, thereby effectively avoiding medical accidents that may be caused by repeated recycling by incorrect recycling. .

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

一种医用注射器，其包括针座（2）、卡座（3）、安全保护套（5）和针管（6）。其中卡座（3）内设置有收容腔（30），针座（2）和安全保护套（5）分别设置在卡座收容腔（30）的上部和下部，所述针管（6）设置在所述针座（2）内，并向下延伸伸入安全保护套（5）。安全保护套（5）可在卡座收容腔（30）内上下移动以便配合针管（6）的注射操作。其中卡座收容腔（30）内设置有定位臂（31），定位臂（31）的末端延伸出有卡部（311），安全保护套（5）设置有定位台阶部（52），通过定位台阶部（52）与定位臂卡部（311）的配接，安全保护套（5）相对于卡座（3）位于初始位置。

Description

[根据细则26改正28.07.2018]　一种医用注射器 技术领域
本发明涉及一种注射器，尤其是一种医用注射器，可以用于胰岛素的注射，但不限于。
背景技术
已知，常见的医用注射器，一般都是由管部和针管构成，所述针管设置在所述管部的前部，用于刺入注射部位，所述管部用于存储待注射液体药物。注射完成后，所述针管会从所述管部的前部摘下，经过消毒后，再被重复利用。
而有些医用注射器，其针管是直接设置在管部上，使用完成后，即会被销毁，以避免后续被重复使用，出现医疗隐患。例如，目前常用的常规胰岛素注射器和笔式胰岛素注射器。
但是，对于这种业界目前常用的胰岛素注射器，其在使用后，由于自身结构设计的原因，使得其针管的端部针尖始终暴露在外部，明显存在安全隐患，安全性问题暴露无疑。
进一步的，这种胰岛素注射器，其自身结构上的设计缺陷，还不止表现在使用完成后，其针管针尖外露上，其还存在更大的安全隐患。即其在完成使用后，在不破坏其自身结构的前提下，还能被回收后重复使用，从而埋下了更为严重的安全隐患。
因此，确有必要来开发一种新型的医用注射器，来克服现有技术中的缺陷。
发明内容
本发明的目的在于提供一种医用注射器，其注射完成后可以对其针管端部 进行有效的遮蔽，避免了注射完成后针管端部外露所产生的安全性问题。
为了实现上述目的，本发明采用的技术方案如下：
一种医用注射器，其包括针座、卡座、安全保护套和针管。其中所述卡座内设置有收容腔，所述针座和安全保护套分别设置在所述卡座收容腔的上部和下部，所述针管设置在所述针座内，并向下延伸伸入所述安全保护套。所述安全保护套可在所述卡座收容腔内上下移动以便配合所述针管的注射操作。其中所述卡座收容腔内设置有定位臂，所述定位臂的末端延伸出有卡部，所述安全保护套设置有定位台阶部，通过所述定位台阶部与所述定位臂卡部的配接，所述安全保护套相对于所述卡座位于初始位置。所述安全保护套在所述卡座收容腔内的向上移动，能够使得所述安全保护套发生转动，从而使得所述定位台阶部脱离与所述定位臂末端卡部之间的配接，此时所述安全保护套相对于所述卡座位于工作位置。
进一步的，在不同实施方式中，其中所述安全保护套的上端设置有斜面状的拨转导向面，所述针座的下部设置有对应的拨转导向面，所述安全保护套的上移，使得所述两拨转导向面接触配合，并使得所述安全保护套发生转动。
进一步的，在不同实施方式中，其中所述安全保护套定位台阶部的一侧设置有导向斜面。
进一步的，在不同实施方式中，其中所述安全保护套的上端设置有限位部，其与所述安全保护套的上端面之间界定有定位面。
进一步的，在不同实施方式中，其中所述限位部的侧面为弧形表面。
进一步的，在不同实施方式中，其中所述安全保护套上还设置有导向凹槽。
进一步的，在不同实施方式中，其中所述卡座收容腔内设置有定位凸条，用于与所述导向凹槽配接。
进一步的，在不同实施方式中，其中所述针座与所述安全保护套之间设置有弹性件。例如，弹簧，但不限于。
进一步的，在不同实施方式中，其还包括针座保护套，套设在所述卡座外。
相对于现有技术，本发明的有益效果是：本发明涉及的一种医用注射器，其采用全新设计的安全保护套结构以及与其配接的卡座结构，使得所述注射器在完成注射后，所述安全保护套能伸出所述卡座，并对针管的端部进行完全遮蔽，从而能够避免因使用完成后，所述针管端部针尖外露可能导致的安全问题。
进一步的，所述安全保护套和所述卡座之间的配接方式，也使得所述安全保护套伸出所述卡座后，不能在不破坏其结构的情况下，重新缩回到所述卡座内，从而使得所述医用注射器在使用后，只能被损毁，不能被简单的回收重复利用，从而有效的避免了因其被不正确的回收进行重复利用，而可能导致的医疗事故。
附图说明
图1是本发明涉及的一个实施方式提供的一种医用注射器的结构示意图；
图2是图1所示的一种医用注射器，其安全保护套的结构示意图；
图3是图1所示的一种医用注射器，其安全保护套和卡座间的配接结构示意图，其中所述安全保护套处于未使用的初始位置；
图4是图1所示的一种医用注射器，其安全保护套和卡座间的配接结构示意图，其中所述安全保护套处于正在使用状态下的工作位置；
图5是图1所示的一种医用注射器，其安全保护套和卡座间的配接结构示意图，其中所述安全保护套处于正在使用状态下的又一工作位置；
图6是图1所示的一种医用注射器，其安全保护套和卡座间的配接结构示意图，其中所述安全保护套处于完成使用后的最终位置；
图7是图1所示的一种医用注射器，其安全保护套和卡座间的配接结构示意图。
图1～7中的附图标记说明如下：
针座保护套          1      针座                 2
卡座                3      弹簧                 4
安全保护套          5      针管                 6
针座拨转导向面      22     收容腔               30
定位臂              31     卡部                 311
定位凸条            32     定位台阶部           52
导向凹槽            522    导向斜面             53
安全保护套拨转导向面                            54
限位部              56     定位面               562
具体实施方式
以下将结合附图和实施例，对本发明涉及的一种医用注射器的技术方案作进一步的详细描述。
请参阅图1所示，本发明的一个实施方式提供了一种医用注射器，其包括针座保护套1、针座2、卡座3、弹簧4、安全保护套5和针管6。
其中所述卡座3内设置有收容腔30，所述针座2设置在所述卡座3收容腔30的上部，所述安全保护套5设置在所述卡座3收容腔30的下部，并部分显露于所述卡座3外。所述弹簧4设置在所述针座2和安全保护套5之间。所述针管6设置在所述针座2内，并向下延伸穿过所述安全保护套5，其端部针尖显露于所述安全保护套5外。所述针座保护套1套设在所述卡座3的外部，并同时将所述针管2也完全遮蔽于其内。
进一步的，请参阅图2所示，所述安全保护套5为一中通管状构型，其两侧部设置有定位台阶部52，两所述定位台阶部52之间设置有导向斜面53。所述定位台阶部52的下方设置有导向凹槽522。进一步的，所述安全保护套5的上端设置有斜面状的拨转导向面54和限位部56，所述限位部56和所述安全保 护套5的上端面之间形成有定位面562。，而所述限位部56的侧面表面优选为弧面设计。
进一步的，请参阅图3所示，其中所述卡座3的收容腔30的侧壁上向下弯折延伸出有定位臂31，所述定位臂31的底端朝向所述收容腔内延伸出形成卡部311，所述收容腔30的底部位置还设置有定位凸条32。所述安全保护套5的定位台阶部52与所述定位臂31卡部311的上下配接，所述导向凹槽522与所述定位凸条32配接，使得所述安全保护套5限位在所述卡座3的收容腔30内。这时，所述医用注射器的安全保护套5处于未使用状态下的初始位置，其针管6端部的针尖是被所述针座保护套1所遮蔽，从而避免其外露。
进一步的，其中所述针座2的下部也设置有斜面状的拨转导向面22，其与所述安全保护套5的拨转导向面54相对应。在所述初始位置，所述针座2的拨转导向面22与所述安全保护套5的拨转导向面54之间，可以相互接触，也可以不相互接触。
使用时，去除所述针座保护套1，使得所述针管6的针尖刺入预定位置的皮肤内。当下压所述针管6针尖进行伸入注射时，所述安全保护套5会在皮肤的反向作用力下，向上移动，同时也会向上压缩所述弹簧4。这时所述针座2的拨转导向面22与所述安全保护套5的拨转导向面54之间开始接触，并随着所述安全保护套5的上移，使得两个所述拨转导向面22、54之间的斜向接触越加深入，并使得所述安全保护套5会发生沿图中箭头方向所示的转动，这种转动会使得所述定位台阶部52的位置改变，从而逐渐脱离与所述卡部311之间的接触，同时也使得所述导向凹槽522的位置开始转向所述定位臂31。这时，所述医用注射器的安全保护套5处于使用状态下的工作位置，其中的转动过程图示，请参阅图4所示。
请参阅图5所示，其图示了所述安全保护套5进行转动到最后的位置图示，其中所述定位台阶部52转出脱离所述卡部311的同时，也使得其侧部设置的所述导向斜面53转至所述定位臂31的上方，其下方的所述导向凹槽522则转至所述定位臂31的卡部311位置，所述卡部311收容在所述定位凹槽522内， 从而使得所述定位臂31失去对所述安全保护套5的定位限制。
注射完成后，所述针管6从皮肤内拔出，这时，所述安全保护套5受到的外力去除，其在所述弹簧4的压缩回复力的作用下向下运动。由于其定位台阶部52已经与所述定位臂31的卡部311的位置发生了改变，因此，两者之间在所述初始位置的互锁，即被解除，使得所述安全保护套5直接向下运动，而不会被所述定位臂31卡部311所阻挡。
同时由于所述导向斜面53处于所述定位臂31的上方，其随着所述安全保护套5的下移，会推动所述定位臂31的卡部311向两侧移动，由于所述定位臂31有一定的弹性，其会向两侧发生一定的弹性变形，进而使得所述安全保护套5在所述弹簧4的弹性恢复力的作用下，顺利通过所述卡部311的位置，直到底部被限位停止，同时所述限位部56则正好位于所述卡部311的一侧。这时，所述医用注射器的安全保护套5处于使用完成后的最终位置，同时所述安全保护套5也完全遮蔽住所述针管6的端部。具体图示，请参阅图6所示。
进一步的，若想反向推动所述安全保护套5恢复到工作位置，请参阅图7所示，这时所述安全保护套5受力向上，使得其限位部56和其上端面之间形成的定位面562与所述卡部311的底面发生抵靠，使得所述卡部311受力，如图中箭头所示，向内侧发生变形。而所述卡部311向内部发生变形，则会使得其竖直面与位于其侧的所述限位部56的弧面表面发生侧面抵靠，如此，通过所述定位面562与所述限位部56的结合阻挡，使得所述卡部311只能停在其所在位置上，或是只能发生轻微变形，从而稳固的阻挡住所述安全保护套5向上移动的空间。如此，所述安全保护套5也就无法继续向上运动，即使增加外力，也只能是破坏掉其自身结构。从而可有效避免其被不正当的回收，并被二次使用。
本发明涉及的一种医用注射器，其采用全新设计的安全保护套结构以及与其配接的卡座结构，使得所述注射器在完成注射后，所述安全保护套能伸出所述卡座，并对针管的端部进行完全遮蔽，从而能够避免因使用完成后，所述针管端部针尖外露可能导致的安全问题。
进一步的，所述安全保护套和所述卡座之间的配接方式，也使得所述安全保护套伸出所述卡座后，不能在不破坏其结构的情况下，重新缩回到所述卡座内，从而使得所述医用注射器在使用后，只能被损毁，不能被简单的回收重复利用，从而有效的避免了因其被不正确的回收进行重复利用，而可能导致的医疗事故。
本发明的技术范围不仅仅局限于上述说明中的内容，本领域技术人员可以在不脱离本发明技术思想的前提下，对上述实施例进行多种变形和修改，而这些变形和修改均应当属于本发明的范围内。

Claims (10)

  1. 一种医用注射器，其包括针座、卡座、安全保护套和针管；其特征在于，其中所述卡座内设置有收容腔，所述针座和安全保护套分别设置在所述卡座收容腔的上部和下部，所述针管设置在所述针座内，并向下延伸伸入所述安全保护套；所述安全保护套可在所述卡座收容腔内上下移动以便配合所述针管的注射操作；其中所述卡座收容腔内设置有定位臂，所述定位臂的末端延伸出有卡部，所述安全保护套设置有定位台阶部，通过所述定位台阶部与所述定位臂卡部的配接，所述安全保护套相对于所述卡座位于初始位置；
    所述安全保护套在所述卡座收容腔内的向上移动，能够使得所述安全保护套发生转动，从而使得所述定位台阶部脱离与所述定位臂末端卡部之间的配接，此时所述安全保护套相对于所述卡座位于工作位置。
  2. 根据权利要求1所述的一种医用注射器；其特征在于，其中所述安全保护套的上端设置有斜面状的拨转导向面，所述针座的下部设置有对应的拨转导向面，所述安全保护套的上移，使得所述两拨转导向面接触配合，并使得所述安全保护套发生转动。
  3. 根据权利要求1所述的一种医用注射器；其特征在于，其中所述安全保护套定位台阶部的一侧设置有导向斜面。
  4. 根据权利要求1所述的一种医用注射器；其特征在于，其中所述安全保护套的上端设置有限位部，其与所述安全保护套的上端面之间界定有定位面。
  5. 根据权利要求4所述的一种医用注射器；其特征在于，其中所述限位部的侧面为弧形表面。
  6. 根据权利要求1所述的一种医用注射器；其特征在于，其中所述安全保护套上还设置有导向凹槽。
  7. 根据权利要求6所述的一种医用注射器；其特征在于，其中所述卡座收容腔内设置有定位凸条，用于与所述导向凹槽配接。
  8. 根据权利要求1所述的一种医用注射器；其特征在于，其中所述针座与所述安全保护套之间设置有弹性件。
  9. 根据权利要求8所述的一种医用注射器；其特征在于，其中所述弹性件包括弹簧。
  10. 根据权利要求1所述的一种医用注射器；其特征在于，其还包括针座保护套，套设在所述卡座外。
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107050572B (zh) * 2017-05-03 2024-03-01 贝普医疗科技股份有限公司 一种医用注射器
CN109701120B (zh) * 2018-12-12 2024-03-29 苏州施莱医疗器械有限公司 安全注射针
CN111110953A (zh) * 2020-01-19 2020-05-08 王浩 一种防刺伤的头皮针结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204394531U (zh) * 2014-12-22 2015-06-17 杭州普昂医疗科技有限公司 导向推进机构及采血针
CN105944190A (zh) * 2016-05-30 2016-09-21 浙江康德莱医疗器械股份有限公司 安全胰岛素笔配套用针
CN107050572A (zh) * 2017-05-03 2017-08-18 贝普医疗科技有限公司 一种医用注射器
CN107174698A (zh) * 2017-05-03 2017-09-19 贝普医疗科技有限公司 一种医用注射器

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1315166C (en) * 1988-10-05 1993-03-30 John S. Parry Injection devices
US20040193110A1 (en) * 2002-02-07 2004-09-30 Lucio Giambattista Pen needle and safety shield system
EP1448256B1 (en) * 2001-11-30 2006-01-25 Novo Nordisk A/S A safety needle assembly
GB0327136D0 (en) * 2003-11-21 2003-12-24 Nmt Group Plc Safety needle
KR200404906Y1 (ko) * 2005-10-11 2005-12-29 우 웨이-슈 분리식 주사침을 구비한 안전 주사기
DE102006053055A1 (de) * 2006-09-01 2008-04-17 Tecpharma Licensing Ag Nadelschutzvorrichtung mit blockierter Schutzposition
DE102006041128A1 (de) * 2006-09-01 2008-03-20 Tecpharma Licensing Ag Sicherheitsnadelmodul mit einem Rastmechanismus und einer Verwendungskennzeichnung
GB0621310D0 (en) * 2006-10-27 2006-12-06 Liversidge Barry P Medical needle safety devices
US8162882B2 (en) * 2010-06-23 2012-04-24 Sta-Med, Llc Automatic-locking safety needle covers and methods of use and manufacture
US8961470B2 (en) * 2011-02-17 2015-02-24 Steven Schraga Pen needle with safety shield system
EP2578256A1 (en) * 2011-10-06 2013-04-10 Sanofi-Aventis Deutschland GmbH Needle safety device
CN104619366B (zh) * 2013-08-14 2017-05-31 泰尔茂株式会社 注射器
JP6262030B2 (ja) * 2014-03-11 2018-01-17 テルモ株式会社 液体投与具
CN104307072A (zh) * 2014-10-29 2015-01-28 杭州普昂医疗科技有限公司 安全式胰岛素笔针
CN104338215B (zh) * 2014-11-04 2017-02-01 贝普医疗科技有限公司 一次性使用安全自毁胰岛素针
CN104771815B (zh) * 2015-04-28 2017-05-03 苏州施莱医疗器械有限公司 带针尖保护的胰岛素注射针头
CN205885909U (zh) * 2016-05-30 2017-01-18 浙江康德莱医疗器械股份有限公司 安全胰岛素笔配套用针
CN207822206U (zh) * 2017-05-03 2018-09-07 贝普医疗科技有限公司 一种医用注射器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204394531U (zh) * 2014-12-22 2015-06-17 杭州普昂医疗科技有限公司 导向推进机构及采血针
CN105944190A (zh) * 2016-05-30 2016-09-21 浙江康德莱医疗器械股份有限公司 安全胰岛素笔配套用针
CN107050572A (zh) * 2017-05-03 2017-08-18 贝普医疗科技有限公司 一种医用注射器
CN107174698A (zh) * 2017-05-03 2017-09-19 贝普医疗科技有限公司 一种医用注射器

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