WO2008098464A1 - Self-destroying insulin syringe - Google Patents

Self-destroying insulin syringe Download PDF

Info

Publication number
WO2008098464A1
WO2008098464A1 PCT/CN2008/000143 CN2008000143W WO2008098464A1 WO 2008098464 A1 WO2008098464 A1 WO 2008098464A1 CN 2008000143 W CN2008000143 W CN 2008000143W WO 2008098464 A1 WO2008098464 A1 WO 2008098464A1
Authority
WO
WIPO (PCT)
Prior art keywords
self
ring
needle
push rod
elastic
Prior art date
Application number
PCT/CN2008/000143
Other languages
French (fr)
Chinese (zh)
Inventor
Zuoqian Lin
Original Assignee
Zuoqian Lin
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zuoqian Lin filed Critical Zuoqian Lin
Publication of WO2008098464A1 publication Critical patent/WO2008098464A1/en

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
    • A61M5/50—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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • 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
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3121—Means preventing contamination of the medicament compartment of a syringe via the proximal end of a syringe, i.e. syringe end opposite to needle cannula mounting end
    • 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
    • A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
    • A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
    • A61M2005/5033—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston by use of an intermediate blocking member positioned between the syringe barrel and the piston rod to prevent retraction of the latter, e.g. toothed clip placed on the piston rod
    • 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
    • A61M5/28—Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • 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
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod

Definitions

  • the present invention pertains to a medical device, and in particular to a single use self-destructing insulin syringe.
  • Insulin syringes are small-dose syringes specially designed for the injection of insulin. As with high-dose syringes, in order to avoid cross-transfer of blood, the current insulin syringes use disposable products, but such disposable syringes are not recognized. For the purpose of destruction, it can be reused. In order not to cause the existing disposable insulin syringe to be reused to cause cross-infection and spread diseases, designing a self-destructive disposable insulin syringe is an inevitable choice in the industry.
  • the existing insulin syringes are mostly placed at the front end of the syringe, but for the insulin syringe with a small inner diameter of the needle, the reasonable setting of the self-destruct mechanism is limited, and the small-dose syringe requires a low residual amount of the liquid, so The syringe with the self-destruct mechanism at the front end is not suitable for injecting insulin.
  • the technical problem to be solved by the present invention is to provide a self-destructing insulin syringe with a more reasonable structure, simple mold opening, more convenient assembly, and low residual liquid medicine.
  • the self-locking mechanism of the syringe is disposed behind the syringe. end.
  • a self-destructive insulin syringe includes a syringe, a push rod and a rubber plug, and a rear end of the needle is provided with an enlarged portion, the enlarged portion
  • a self-destructing mechanism is provided, wherein: the self-destructing mechanism is composed of a stop ring and a support ring, the stop ring is supported and fixed by a support ring, and the upper end of the check ring is provided with an elastic spine gathered toward the center.
  • the lower end is provided with elastic claws, correspondingly
  • the wall is provided with a groove embedded in the elastic claw, and the push rod is provided with a frustum that is engaged with the elastic pawl.
  • the self-destruct mechanism is disposed at the rear end of the needle pin, and can be free from the limitation of the inner diameter of the needle front end.
  • the retaining ring and the support ring cooperate with each other, and when the push rod is pushed back and pulled back, the retaining ring is It will not move, making the self-destruct mechanism more reliable and safe, the structure is more reasonable, and the mold is simple to set up, the assembly is more convenient, and the residual liquid is low.
  • the present invention adopts the following further technical solutions: the center of the anti-back ring is provided with a boss, and correspondingly, the inner wall of the needle-shaped ring is provided with a step, and the upper end surface of the anti-retracting ring boss is simplified. The lower end faces of the steps meet. With this structure, the retaining ring is better fixed and prevented from pushing forward with the push rod.
  • the upper end of the support ring presses the elastic claw on the retaining ring, and the middle portion is provided with a boss.
  • the lower end of the push rod is provided with a plurality of break points. After the easy break point is set, when the push rod is pulled backwards after the injection is completed, the break point can be pulled off to achieve the purpose of complete self-destruction.
  • Figure 1 is a cross-sectional view showing the unused state of the present invention
  • Figure 2 is a partial enlarged view of Figure 1;
  • Figure 3 a front view of the unmounted state of the unwinding ring
  • Figure 4 is a cross-sectional view taken along the line E-E;
  • Figure 5 is a plan view of Figure 3;
  • Figure 7 is a cross-sectional view taken along the line F-F of Figure 6;
  • Figure 8 is a top view of Figure 6;
  • Figure 9. is a cross-sectional view of the support ring;
  • Figure 10 is a cross-sectional view of the needle
  • Figure 11 is a cross-sectional view showing the state of liquid extraction in the present invention.
  • Figure 12 is a cross-sectional view showing the state of completion of the pumping of the present invention.
  • Figure 1 is a cross-sectional view showing the state in which the pushing of the present invention is completed
  • Figure 14 is a cross-sectional view showing the state of self-destruction of the present invention.
  • the present invention comprises a hollow needle 1 , a push rod 2 sliding in the needle 1 and a rubber plug 3 mounted on the front end of the push rod 1 a seat 4, a rear end of the syringe 1 is provided with an enlarged diameter portion, and a self-destructing mechanism is disposed in the enlarged portion, and the self-destruct mechanism is composed of a check ring 5 and a support ring 6, the check ring 5 is supported and fixed by the support ring 6, the upper end of the retaining ring 5 is provided with an elastic pawl 7 gathered toward the center, and the lower end is provided with elastic claws 8, and the number of the elastic pawls 7 and the elastic claws 8 is at least two, corresponding
  • the inner wall of the ground pin 1 is provided with a groove 9 in which the elastic claw 8 is fitted, and the push rod 2 is provided with a frustum 10 which is engaged with the elastic pawl 7.
  • the push rod 1 is provided with a plurality of break points.
  • four easy break points A, B, C, and D are provided.
  • the easy pull point can be pulled along the easy point. Broken, so that the push rod 2 can not be used again, to achieve the purpose of complete self-destruction.
  • the anti-back ring 5 is provided with a boss 11 in the middle portion, and correspondingly the inner wall of the needle is provided with a step 12, and when the push rod 2 pushes forward, the upper end surface of the retaining ring boss 11 is in contact with the lower end surface of the pin step 12
  • the anti-back ring 5 is prevented from moving forward, the upper end of the support ring 6 is pressed against the elastic claw 8 on the retaining ring 5, and the middle portion is provided with a boss 13 on which the elastic claw 8 of the retaining ring 5 is placed.
  • Fig. 11 Fig. 12, Fig. 13, Fig. 14, first, as shown in Fig. 1, when the syringe is not in use, the elastic claw 8 at the lower end of the retaining ring 5 is embedded in the recess 9 of the inner wall of the needle 1 Inside, the frustum 10 does not pass through the elastic pawl 7, and at the same time, a large sheath 14 is provided at the bottom of the syringe 1 for preventing misoperation. Then, as shown in Fig. 11, in order to start the pumping state, at this time, the large sheath 14 has been removed, as shown in Fig. 12, at this time, the pumping is completed, as shown in Fig.

Abstract

A self-destroying insulin syringe includes a barrel (1), a plunger-rod (2) and a piston (3). The barrel (1) is provided with a diameter-increasing part at the rear end, which is provided with a self-destroying mechanism therein. The self-destroying mechanism is comprised of a stop ring (5) and a support ring (6), and the stop ring (5) is supported and secured by the support ring (6). The stop ring (5) is provided with centripetal gathering elastic pawls (7) at the upper end, and provided with elastic support claws (8) at the lower end. Correspondingly, the wall of the barrel (1) is provided with recesses (9) into which the elastic support claws (8) are embedded. The plunger-rod (2) has a taper table (10) clamped with the elastic pawls (7).

Description

一种自毁式胰岛素注射器  Self-destructing insulin syringe
技术领域 Technical field
本发明属于一种医疗器具，具体地属于一种一次性使用的自毁式 胰岛素注射器。  The present invention pertains to a medical device, and in particular to a single use self-destructing insulin syringe.
背景技术 Background technique
胰岛素注射器是专门用于注射胰岛素的小剂量注射器， 与大剂量注 射器一样， 为避免血液交叉传确染， 现在的胰岛素注射器均釆用一次性用 品，但这种一次性注射器，如果不人认 1 为的进行毁坏，是可以重复利用的， 为了不使现有一次性胰岛素注射器被重本复利用而导致交叉感染，传播疾 病， 设计自毁式一次性胰岛素注射器是行业内的必然选择。 现有的胰岛 素注射器其自毁机构大都 ¾置在注射器的前端，但对于针简内径较小的 胰岛素注射器， 却限制了自毁机构的合理设置， 另外小剂量注射器要求 药液残留量低， 故自毁机构设置在前端的注射器不适合专门用于注射胰 岛素。  Insulin syringes are small-dose syringes specially designed for the injection of insulin. As with high-dose syringes, in order to avoid cross-transfer of blood, the current insulin syringes use disposable products, but such disposable syringes are not recognized. For the purpose of destruction, it can be reused. In order not to cause the existing disposable insulin syringe to be reused to cause cross-infection and spread diseases, designing a self-destructive disposable insulin syringe is an inevitable choice in the industry. The existing insulin syringes are mostly placed at the front end of the syringe, but for the insulin syringe with a small inner diameter of the needle, the reasonable setting of the self-destruct mechanism is limited, and the small-dose syringe requires a low residual amount of the liquid, so The syringe with the self-destruct mechanism at the front end is not suitable for injecting insulin.
发明内容 Summary of the invention
本发明所要解决的技术问题是： 提供一种结构更为合理、模具开 设简单、 装配更方便、 药液残留量低的自毁式胰岛素注射器， 这种注 射器， 其自锁机构设置在注射器的后端。 为了解决上述技术问题， 本发明釆用以下技术方案： 一种自毁式 胰岛素注射器， 包括针筒、 推杆和胶塞， 所述针简的后端设有直径增 大部分， 该增大部分内设有一自毁机构， 其特征在于： 所述自毁机构 由止退环和支撑环组成， 所述止退环由支撑环支撑固定， 所述止退环 上端设有向中心聚拢的弹性棘爪， 下端设有弹性撑爪， 相应地针简内 壁设有弹性撑爪嵌入的凹槽， 推杆上设与弹性棘爪相卡合的锥台。 由以上技术方案可知： 自毁机构设置在针简的后端， 可以不受针 简前端内径较小的限制，止退环和支撑环相互配合，推杆前推回拉时, 止退环都不会移动， 使自毁机构更可靠安全、 结构更合理， 且模具开 设简单、 装配更方便、 药液残留量低。 The technical problem to be solved by the present invention is to provide a self-destructing insulin syringe with a more reasonable structure, simple mold opening, more convenient assembly, and low residual liquid medicine. The self-locking mechanism of the syringe is disposed behind the syringe. end. In order to solve the above technical problem, the present invention adopts the following technical solutions: A self-destructive insulin syringe includes a syringe, a push rod and a rubber plug, and a rear end of the needle is provided with an enlarged portion, the enlarged portion A self-destructing mechanism is provided, wherein: the self-destructing mechanism is composed of a stop ring and a support ring, the stop ring is supported and fixed by a support ring, and the upper end of the check ring is provided with an elastic spine gathered toward the center. Claw, the lower end is provided with elastic claws, correspondingly The wall is provided with a groove embedded in the elastic claw, and the push rod is provided with a frustum that is engaged with the elastic pawl. It can be known from the above technical solutions that the self-destruct mechanism is disposed at the rear end of the needle pin, and can be free from the limitation of the inner diameter of the needle front end. The retaining ring and the support ring cooperate with each other, and when the push rod is pushed back and pulled back, the retaining ring is It will not move, making the self-destruct mechanism more reliable and safe, the structure is more reasonable, and the mold is simple to set up, the assembly is more convenient, and the residual liquid is low.
为了解决上述技术问题， 本发明釆用以下进一步的技术方案： 所述止退环中部设有凸台， 相应地针简的内壁上设有台阶，止退 环凸台的上端面与.针简台阶的下端面相碰合。 釆用这种结构后， 止退 环被更好地固定， 并阻止其随推杆向前推液而前移。  In order to solve the above technical problem, the present invention adopts the following further technical solutions: the center of the anti-back ring is provided with a boss, and correspondingly, the inner wall of the needle-shaped ring is provided with a step, and the upper end surface of the anti-retracting ring boss is simplified. The lower end faces of the steps meet. With this structure, the retaining ring is better fixed and prevented from pushing forward with the push rod.
所述支撑环上端紧压止退环上的弹性撑爪， 中部设有凸台。 采用 这种结构后： 在支撑环的作用下， 止退环可更好地被固定。  The upper end of the support ring presses the elastic claw on the retaining ring, and the middle portion is provided with a boss. After adopting this structure: Under the action of the support ring, the retaining ring can be better fixed.
所述的推杆下端设有若干易断点。该置该易断点后当注射完毕后 推杆向后抽拔时， 能够沿所述易断点拉断， 达到彻底自毁的目的。 附图说明  The lower end of the push rod is provided with a plurality of break points. After the easy break point is set, when the push rod is pulled backwards after the injection is completed, the break point can be pulled off to achieve the purpose of complete self-destruction. DRAWINGS
图 1、 为本发明未使用状态的剖视图；  Figure 1 is a cross-sectional view showing the unused state of the present invention;
图 2、 为图 1的局部放大图；  Figure 2 is a partial enlarged view of Figure 1;
图 3、 为止退环未安装状态的主视图；  Figure 3, a front view of the unmounted state of the unwinding ring;
图 4、 图 3的 E-E向剖视图；  Figure 4, Figure 3 is a cross-sectional view taken along the line E-E;
图 5、 为图 3的俯视图；  Figure 5 is a plan view of Figure 3;
图 6、 为止退环安装状态的主视图；  Figure 6. Front view of the unloaded ring installation state;
图 7、 为图 6的 F-F向剖视图；  Figure 7 is a cross-sectional view taken along the line F-F of Figure 6;
图 8、 为图 6的俯视图； 图 9、 为支撑环的剖视图； Figure 8, is a top view of Figure 6; Figure 9. is a cross-sectional view of the support ring;
图 10、 为针简的剖视图；  Figure 10 is a cross-sectional view of the needle;
图 11、 为本发明开始抽液状态的剖视图；  Figure 11 is a cross-sectional view showing the state of liquid extraction in the present invention;
图 12、 为本发明抽液完毕状态的剖视图；  Figure 12 is a cross-sectional view showing the state of completion of the pumping of the present invention;
图 1 3、 为本发明推液完毕状态的剖视图；  Figure 1 is a cross-sectional view showing the state in which the pushing of the present invention is completed;
图 14、 为本发明自毁完毕状态的剖视图。  Figure 14 is a cross-sectional view showing the state of self-destruction of the present invention.
具体实施方式 detailed description
参照图 1、 图 2、 图 10, 本发明包括一空心针简 1、 一在针简 1 内滑动的推杆 2和安装在推杆 1前端的胶塞 3 , 针简 1的前端成型有 一针座 4， 所述针筒 1的后端设有直径增大部分， 该增大部分内设有 一自毁机构， 所述自毁机构由止退环 5和支撑环 6组成， 所述止退环 5由支撑环 6支撑固定， 所述止退环 5上端设有向中心聚拢的弹性棘 爪 7， 下端设有弹性撑爪 8， 弹性棘爪 7和弹性撑爪 8的数量至少两 个， 相应地针简 1内壁设有弹性撑爪 8嵌入的凹槽 9 , 推杆 2上设与 弹性棘爪 7相卡合的锥台 10。 推杆 1上设有若干易断点， 本实施例 设有四个易断点 A、 B、 C、 D, 当注射完毕后推杆 2 向后抽拔时， 能 够沿所述易浙点拉断， 从而使所述推杆 2无法再次使用， 达到彻底自 毁的目的。  Referring to Figures 1, 2 and 10, the present invention comprises a hollow needle 1 , a push rod 2 sliding in the needle 1 and a rubber plug 3 mounted on the front end of the push rod 1 a seat 4, a rear end of the syringe 1 is provided with an enlarged diameter portion, and a self-destructing mechanism is disposed in the enlarged portion, and the self-destruct mechanism is composed of a check ring 5 and a support ring 6, the check ring 5 is supported and fixed by the support ring 6, the upper end of the retaining ring 5 is provided with an elastic pawl 7 gathered toward the center, and the lower end is provided with elastic claws 8, and the number of the elastic pawls 7 and the elastic claws 8 is at least two, corresponding The inner wall of the ground pin 1 is provided with a groove 9 in which the elastic claw 8 is fitted, and the push rod 2 is provided with a frustum 10 which is engaged with the elastic pawl 7. The push rod 1 is provided with a plurality of break points. In this embodiment, four easy break points A, B, C, and D are provided. When the push rod 2 is pulled backwards after the injection is completed, the easy pull point can be pulled along the easy point. Broken, so that the push rod 2 can not be used again, to achieve the purpose of complete self-destruction.
参见图 3、 图 4、 图 5 , 此为止退环 5未安装状态， 此时弹性撑 爪 8处于自由状态， 参见图 6、 图 7、 图 8为止退环 5安装状态， 此 时弹性撑爪 8压紧后紧扣在针简 1内壁的四槽 9内。  Referring to Fig. 3, Fig. 4, Fig. 5, the unwinding ring 5 is not installed yet, and the elastic claws 8 are in a free state. Referring to Fig. 6, Fig. 7, Fig. 8, the retracting ring 5 is installed, and the elastic claws are at this time. 8 After pressing, it is fastened in the four slots 9 of the inner wall of the needle 1 .
参见图 7、 图 9、 图 10 , 为了更好地固定止退环 5， 所述止退环 5 中部设有凸台 11， 相应地针简 的内壁上设有台阶 12， 当推杆 2 向前推液时，止退环凸台 11的上端面与针简台阶 12的下端面相碰合， 阻止止退环 5前移，所述支撑环 6上端紧压止退环 5上的弹性撑爪 8， 中部设有凸台 13，止退环 5的弹性撑爪 8正好置于该凸台 13的上方。 Referring to Figures 7, 9, and 10, in order to better fix the retaining ring 5, the anti-back ring 5 is provided with a boss 11 in the middle portion, and correspondingly the inner wall of the needle is provided with a step 12, and when the push rod 2 pushes forward, the upper end surface of the retaining ring boss 11 is in contact with the lower end surface of the pin step 12 The anti-back ring 5 is prevented from moving forward, the upper end of the support ring 6 is pressed against the elastic claw 8 on the retaining ring 5, and the middle portion is provided with a boss 13 on which the elastic claw 8 of the retaining ring 5 is placed. Above.
参见图 1、 图 11、 图 12、 图 13、 图 14， 首先， 如图 1所示， 注 射器未被使用时，止退环 5下端的弹性撑爪 8嵌入在针简 1内壁的凹 槽 9内， 锥台 10并没有穿过弹性棘爪 7 , 同时为防止误操作的针筒 1 底部设有大护套 14。 随后如图 11所示， 为开始抽液状态， 此时， 已 去除大护套 14， 如图 12所示， 此时为抽液完毕， 如图 13所示， 此 时推液完毕， 锥台 10就会穿过所述弹性棘爪 7 , 使弹性棘爪 7与锥 台 10卡合，从而阻碍推杆 2往回运动，如图 14所示，此时自毁完毕， 用力将推杆 2拉断， 使推杆 2断在针简 1内无法出来， 防止调换推杆 2和胶塞 3再次使用， 达到彻底自毁。  Referring to Fig. 1, Fig. 11, Fig. 12, Fig. 13, Fig. 14, first, as shown in Fig. 1, when the syringe is not in use, the elastic claw 8 at the lower end of the retaining ring 5 is embedded in the recess 9 of the inner wall of the needle 1 Inside, the frustum 10 does not pass through the elastic pawl 7, and at the same time, a large sheath 14 is provided at the bottom of the syringe 1 for preventing misoperation. Then, as shown in Fig. 11, in order to start the pumping state, at this time, the large sheath 14 has been removed, as shown in Fig. 12, at this time, the pumping is completed, as shown in Fig. 13, at this time, the pushing is completed, the frustum 10 will pass through the elastic pawl 7 to engage the elastic pawl 7 with the frustum 10, thereby hindering the push rod 2 from moving back, as shown in Fig. 14, at this time, the self-destruction is completed, and the push rod 2 is forcedly Pulling off, so that the push rod 2 is broken in the needle 1 can not be out, and the replacement push rod 2 and the rubber plug 3 are prevented from being used again, and the self-destruction is completely achieved.

Claims

权利要求 Rights request
1、 一种自毁式胰岛素注射器, 包括针简（1)、 推杆 ( 2 )和胶塞（3 )， 所述针简（1)的后端设有直径增大部分， 该增大部分内设有一自毁机 构， 其特征在于： 所述自毁机构由止退环（5)和支撑环（6)组成， 所述 止退环（5)由支撑环（6)支撑固定， 所述止退环（5)上端设有向中心聚 拢的弹性棘爪（7)， 下端设有弹性撑爪（8)， 相应地针简（1)内壁设有 弹性撑爪（8)嵌入的四槽（9) ,推杆（2)上设与弹性棘爪（7)相卡合的锥 台（10)。  A self-destructing insulin injector comprising a needle (1), a push rod (2) and a rubber stopper (3), the rear end of the needle (1) being provided with an enlarged diameter portion, the enlarged portion a self-destructing mechanism is provided, characterized in that: the self-destructing mechanism is composed of a stop ring (5) and a support ring (6), and the stop ring (5) is supported and fixed by the support ring (6), The upper end of the retaining ring (5) is provided with an elastic pawl (7) gathered toward the center, and the lower end is provided with an elastic claw (8), and correspondingly, the inner wall of the needle (1) is provided with four slots embedded with elastic claws (8). (9) The push rod (2) is provided with a frustum (10) that engages with the elastic pawl (7).
2、 如权利要求 1所述的一种自毁式胰岛素注射器， 其特征在于： 所 述止退环（5)中部设有凸台（11) , 相应地针简（1)的内壁上设有台阶 2. A self-destructing insulin syringe according to claim 1, wherein: the central portion of the retaining ring (5) is provided with a boss (11), and correspondingly the inner wall of the needle (1) is provided Step
(12) ,止退环凸台（11)的上端面与针简台阶（12)的下端面相碰合。(12) The upper end surface of the retaining ring boss (11) is in contact with the lower end surface of the needle step (12).
3、 如权利要求 1或 2所述的一种自毁式胰岛素注射器， 其特征在于: 所述.支撑环（6)上端紧压止退环（5)上的弹性撑爪（8)， 中部设有凸台3. A self-destructing insulin syringe according to claim 1 or 2, wherein: the upper end of the support ring (6) presses the elastic claw (8) on the retaining ring (5), the middle portion Bolt
(13)。 (13).
4、 如权利要求 1或 2所述的一种自毁式胰岛素注射器，其特征在于: 所述的推杆 (2)下端设有若干易断点。  4. A self-destructing insulin syringe according to claim 1 or 2, wherein: the lower end of said push rod (2) is provided with a plurality of frangible points.
5、 如权利要求 3所述的一种自毁式胰岛素注射器， 其特征在于： 所 述的推杆 (2)下端设有若干易断点。  A self-destructing insulin syringe according to claim 3, wherein: the lower end of said push rod (2) is provided with a plurality of frangible points.
PCT/CN2008/000143 2007-02-12 2008-01-21 Self-destroying insulin syringe WO2008098464A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB200710067311XA CN100450560C (en) 2007-02-12 2007-02-12 Self-destroying insulin injector
CN200710067311.X 2007-02-12

Publications (1)

Publication Number Publication Date
WO2008098464A1 true WO2008098464A1 (en) 2008-08-21

Family

ID=38708017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/000143 WO2008098464A1 (en) 2007-02-12 2008-01-21 Self-destroying insulin syringe

Country Status (2)

Country Link
CN (1) CN100450560C (en)
WO (1) WO2008098464A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100450560C (en) * 2007-02-12 2009-01-14 林作钱 Self-destroying insulin injector
CN101979108B (en) * 2010-09-09 2012-07-04 上海双鸽实业有限公司 Insulin syringe
CN111214728B (en) * 2018-11-27 2023-06-02 赵着 Disposable self-destroying syringe
CN109350805A (en) * 2018-12-07 2019-02-19 河南曙光汇知康生物科技股份有限公司 A kind of disposable safety self-breaking injector that needle stand is self-locking

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004460A (en) * 1988-01-07 1991-04-02 Gimeno Carlos V Non-reusable syringe
US5250030A (en) * 1991-10-03 1993-10-05 Corsich Cesar G Hypodermic syringe with a blockable piston capable of preventing its recharge and reuse
US6494863B1 (en) * 2001-10-15 2002-12-17 Retractable Technologies, Inc. One-use retracting syringe with positive needle retention
CN2546044Y (en) * 2002-04-28 2003-04-23 山东威高集团有限公司 Self-destroy injector
CN2595384Y (en) * 2002-05-15 2003-12-31 王希平 Small dosage self destroying (self-locking) type syringe
CN2703540Y (en) * 2004-04-09 2005-06-08 山东威高集团医用高分子制品股份有限公司 Disposable safety syringe
WO2005072797A1 (en) * 2004-01-28 2005-08-11 Unitract Syringe Pty Ltd One use syringe with ratchet on plunger and pawl on body
CN2803412Y (en) * 2005-01-25 2006-08-09 林作钱 Safety self-destroying and disposable syringe
CN2865719Y (en) * 2005-12-26 2007-02-07 江西三鑫医疗器械集团有限公司 Self-locking self-destroying injector
CN101020091A (en) * 2007-02-12 2007-08-22 林作钱 Self-destroying insulin injector
CN201008690Y (en) * 2007-02-12 2008-01-23 林作钱 Self-destroying type insulin syringe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2188995A (en) * 1994-03-31 1995-10-23 Unique Management Enterprises, Inc. Apparatus for shielding a syringe needle
CN2863144Y (en) * 2005-12-28 2007-01-31 林作钱 Safe self-destruction medical syringe
CN100425303C (en) * 2006-01-12 2008-10-15 林作钱 Safe self-destruction syringe for medical purpose
CN100391554C (en) * 2006-04-13 2008-06-04 林作钱 Safe medical syringe with needle capable of automatically retracting
CN100471533C (en) * 2006-08-14 2009-03-25 林作钱 Disposable self-destroyed syringe

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004460A (en) * 1988-01-07 1991-04-02 Gimeno Carlos V Non-reusable syringe
US5250030A (en) * 1991-10-03 1993-10-05 Corsich Cesar G Hypodermic syringe with a blockable piston capable of preventing its recharge and reuse
US6494863B1 (en) * 2001-10-15 2002-12-17 Retractable Technologies, Inc. One-use retracting syringe with positive needle retention
CN2546044Y (en) * 2002-04-28 2003-04-23 山东威高集团有限公司 Self-destroy injector
CN2595384Y (en) * 2002-05-15 2003-12-31 王希平 Small dosage self destroying (self-locking) type syringe
WO2005072797A1 (en) * 2004-01-28 2005-08-11 Unitract Syringe Pty Ltd One use syringe with ratchet on plunger and pawl on body
CN2703540Y (en) * 2004-04-09 2005-06-08 山东威高集团医用高分子制品股份有限公司 Disposable safety syringe
CN2803412Y (en) * 2005-01-25 2006-08-09 林作钱 Safety self-destroying and disposable syringe
CN2865719Y (en) * 2005-12-26 2007-02-07 江西三鑫医疗器械集团有限公司 Self-locking self-destroying injector
CN101020091A (en) * 2007-02-12 2007-08-22 林作钱 Self-destroying insulin injector
CN201008690Y (en) * 2007-02-12 2008-01-23 林作钱 Self-destroying type insulin syringe

Also Published As

Publication number Publication date
CN101020091A (en) 2007-08-22
CN100450560C (en) 2009-01-14

Similar Documents

Publication Publication Date Title
WO2009140801A1 (en) New safe latching type self-destroying syringe
KR101872378B1 (en) Syringe barrel adapter and needle assembly
US8690825B2 (en) Safety syringe
US20020032412A1 (en) Syringe with retractable needle and a single use syringe
CN104159629B (en) Extruding starts the anterior attachment arrangement for syringe retracted
JP5548701B2 (en) Needle assembly and drug delivery system
ES2862954T3 (en) Pusher disc frangible feature to prevent reuse
SE518981C2 (en) autoinjector
PT2812051T (en) Plunger sub-assemblies and auto-injectors having low retraction activation force
WO2011160364A1 (en) Needle-exchangeable and self-destruction insulin syringe
WO2010081346A1 (en) Low residue safety self-destroying syringe
JP6078165B2 (en) Pre-fillable and automatically retractable safety syringe
KR20140050034A (en) Needle-free injection device
WO2007115481A1 (en) Self-destroying disposable syringe and self-destroying method thereof
CN102725014A (en) Vaccination syringe
WO2011012014A1 (en) Improved safety syringe
WO2008098464A1 (en) Self-destroying insulin syringe
WO2007065324A1 (en) A disposable safety syringe
US20080021388A1 (en) Syringe
WO2007118407A1 (en) Needle gradually auto-retractable safety medical syringe
WO2004091698A1 (en) Safety syringe
WO2015059529A1 (en) Retractable syringe
WO2011094977A1 (en) Dosing self-destruction syringe
JP7355925B2 (en) safety syringe
TW201334829A (en) Self-destructive insulin syringe

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08700692

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08700692

Country of ref document: EP

Kind code of ref document: A1