WO2010088845A1 - Disposable safety syringe with automatically retractable needle head - Google Patents
Disposable safety syringe with automatically retractable needle head Download PDFInfo
- Publication number
- WO2010088845A1 WO2010088845A1 PCT/CN2010/000171 CN2010000171W WO2010088845A1 WO 2010088845 A1 WO2010088845 A1 WO 2010088845A1 CN 2010000171 W CN2010000171 W CN 2010000171W WO 2010088845 A1 WO2010088845 A1 WO 2010088845A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- needle
- tube
- push rod
- syringe
- hook
- Prior art date
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Classifications
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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
- 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
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
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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
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
- A61M2005/31508—Means for blocking or restricting the movement of the rod or piston provided on the piston-rod
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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
- A61M5/50—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
- A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing
Definitions
- the present invention relates to the field of medical device technology, and more particularly to a single-use safety syringe in which a needle can be automatically retracted. Background technique
- disposable sterile syringes for injecting liquid medicines and preventing vaccines has played a positive role in controlling iatrogenic infectious diseases and preventing cross-infection.
- currently used disposable syringes have many deficiencies due to their unreasonable structure. Some existing disposable syringes are exposed after use, which is easy to cause sharp injuries, and there is a hidden danger of direct cross-infection. At the same time, the syringe after use is still intact, which facilitates the recovery of some criminals. That is, the syringe that has been discarded after use is reprocessed and reused, so that it is difficult to achieve a true one-time use.
- a needle-returnable self-retracting disposable safety syringe comprising a needle, a syringe and a push rod
- the needle comprising a needle tube and a core tube
- the core tube a hollow core tube
- the needle tube is fixedly embedded in the core tube
- the upper end of the barrel is a small mouth end
- the lower end is a large mouth end
- the push rod is inserted into the barrel cavity from the large mouth end
- the needle positioning sealing device comprises an intermediate tube and a buckle cap, wherein the middle tube is a hollow core tube, the inner cavity is provided with a hook and a sealing hoop, and the outer side is provided with an intermediate tube hook and a buckle groove, and the buckle cap is also
- the utility model has a hollow core structure, and is provided with a buckle cap hook and a limiting ring, wherein the core tube of the needle is inserted into the inner cavity of the middle tube, and the hook of the middle tube abuts the bottom end of the core tube, and the sealing band Then, it is closely connected to the outer circumference of the core tube.
- the middle tube is inserted into the inner cavity of the small end of the hollow needle barrel, and the upper part exposes the syringe barrel.
- the middle tube is fastened and fastened to the buckle in the inner cavity of the syringe barrel through the buckle groove, and the buckle cap is fastened.
- the tube wall is inserted into the inner tube inner cavity and is jacketed on the core tube, and the upper part of the core tube protrudes through the cap hole,
- the buckle cap hook is placed outside the middle tube, and the buckle cap is fastened by the buckle hook hook and the middle tube hook, and the limit ring of the buckle cap is pressed against the upper boss of the core tube;
- the needle retracting device comprises a compression spring, a tongue and a top plug, and a recovery cavity is arranged in the push rod, the compression spring is jacketed on the core tube, and the limiting ring of the buckle cap and the downward convexity of the core tube.
- the tongue is placed on the intermediate tube and integrated with the hook, and the top plug is jammed at the upper end opening of the recovery chamber in the push rod.
- the above-mentioned needle can automatically retract the single-use safety syringe, characterized in that it further comprises a push rod anti-backup device, wherein the push rod anti-backup device comprises a stop card basket and a stop chuck, and the stop card basket is fixed The card is snapped into the inner cavity of the lower end of the hollow cylinder, and the anti-return chuck is disposed outside the lower end of the push rod.
- the push rod anti-backup device comprises a stop card basket and a stop chuck, and the stop card basket is fixed The card is snapped into the inner cavity of the lower end of the hollow cylinder, and the anti-return chuck is disposed outside the lower end of the push rod.
- the above-mentioned needle can automatically retract the single-use safety syringe, characterized in that it further comprises a safety device, the safety frame of the safety device is fixedly connected to the lower end of the push rod, and comprises a safety hook groove fixedly integrated, and a safety hook head And insurance means.
- the single-use safety syringe in which the needle is automatically retractable is characterized in that it further comprises a vent hole, and the vent hole is provided on the push rod.
- the disposable safety syringe of the above-mentioned needle can be automatically retracted, characterized in that the cap of the buckle cap is provided with friction reducing teeth.
- the above-mentioned needle can be automatically retracted by the single-use safety syringe, characterized in that the syringe, the push rod, the core tube, the middle tube, the buckle cap, the top plug and the safety frame are made of plastic material.
- the disposable safety syringe of the above-described needle can be automatically retracted, characterized in that the syringe is made of a transparent plastic material.
- the structure of the invention has reasonable structure design, convenient assembly, and is very suitable for automatic assembly of the production line, improves the automation degree and efficiency of the production, has good quality of automatic assembly and high qualification rate, and the invention does not change the traditional customary method when used.
- the needle can be automatically retracted and hidden after the injection is completed, ensuring that the doctor and patient are protected from accidental injury of the needle tip, which is beneficial to realize the true one-time use of the syringe, avoid the spread of blood-borne diseases, and create more A hygienic and safe medical environment.
- FIG. 1 is a schematic view of a single-use safety syringe with a protective sleeve that can be automatically retracted according to the present invention
- 2 is a schematic cross-sectional view showing a single-use safety syringe with a needle retractable automatically according to Embodiment 1 of the present invention
- Figure 3 is a schematic view showing the state of the needle retraction after the injection of the disposable safety syringe with the needle retractable automatically according to the present invention
- Figure 4 is an enlarged schematic view showing the assembly structure of the core tube, the intermediate tube, the buckle cap and the compression spring of Figure 2;
- Figure 5 is a schematic view of the insurable state of the safety frame
- Figure 6 is a cross-sectional view showing the intermediate tube of the present invention.
- Figure 7 is a cross-sectional view of the buckle cap of the present invention.
- Figure 8 is a top plan view of Figure 7;
- Figure 9 is a schematic cross-sectional view of the syringe of the present invention.
- Figure 10 is a cross-sectional view showing the stop card basket of the present invention.
- Figure 11 is a cross-sectional view showing the combination of the push rod and the safety frame (pushing handle) and the piston of the present invention
- Figure 12 is a cross-sectional view showing the core tube of the present invention
- Figure 13 is a cross-sectional view showing the top plug of the present invention.
- a single-use safety syringe with a needle retractable automatically as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4 includes a needle, a syringe 1 and a push rod 2, the needle including a needle tube 3 and a core tube 4, the core tube 4 is a hollow core tube, the upper end of the mouth is a small mouth, the lower end opening is a large mouth, the needle needle 3 of the needle and the core tube 4 are connected by the prior art, the needle tube 3 is fixedly embedded in the core tube 4, The push rod 2 is inserted into the inner cavity of the syringe 1 and is fixedly provided with a piston 1 1 .
- the push rod 2 is inserted into the inner cavity from the large end (lower end) of the syringe 1 , and can be sealed by the piston 11 , which belongs to the prior art.
- a needle protection cap 12 is attached to one end of the single-use safety syringe needle to which the needle can be automatically retracted.
- the disposable safety syringe of the present invention further comprises a needle positioning sealing device comprising an intermediate tube 5 and a buckle cap 6, the intermediate tube 5 being a hollow core tube, the inner cavity being provided with a hook 501 and a seal
- the hoop 503 has an intermediate tube hook 504 and a buckle groove 505 on the outer side.
- the main body of the buckle cap 6 is also a hollow core tube, and a buckle cap 601 and a limiting ring 602 are disposed on an outer side thereof.
- the core tube 4 of the needle is inserted into the inner cavity of the intermediate tube 5, and the hook 501 of the middle tube 5 abuts against the bottom end of the core tube 4, and the sealing band 503 is in close contact with the outer periphery of the core tube 4 to seal. Since the sealing ferrule 503 of the single-use safety syringe of the needle retractable by the needle of the present invention is designed as an integral member with the intermediate tube 5, not only the sealing effect is good, but also the production and assembly are very convenient.
- the intermediate tube 5 is sleeved in the inner cavity of the small end (upper end) of the hollow needle barrel 1, and the upper part exposes the syringe 1.
- the intermediate tube 5 is fixedly engaged with the syringe 1 , that is, the intermediate tube 5 is fixedly engaged with the buckle 101 in the inner cavity of the syringe 1 through the buckle groove 505 thereof.
- the wall of the buckle cap 6 is inserted into the inner cavity of the intermediate tube 5, and is jacketed on the core tube 4.
- the upper portion of the core tube 4 extends through the cap hole 603 to extend the buckle cap 6, and the buckle cap hook 601 is placed outside the intermediate tube 5.
- the buckle cap 6 is engaged with the middle tube hook 504 by the buckle cap hook 601 to fasten the buckle cap 6 and the intermediate tube 5, and the limit ring 602 of the buckle cap 6 is pressed against the upper boss 401 of the core tube 4. .
- the needle is pressed by the bottom end of the core tube 4 and the abutting of the hook 501 and the limit ring 602 against the upper boss 401 of the core tube 4, and is positioned on the syringe barrel 1.
- the disposable safety syringe for automatically retracting the needle of the present invention further comprises a needle retracting device comprising a compression spring 7, a tongue 502 and a top plug 8, and a recovery chamber 201 is provided in the push rod 2 .
- the compression spring 7 is jacketed on the core tube 4, and the limit ring 602 of the buckle cap 6 and the lower boss 402 of the core tube 4 are pressed together.
- the tongue strip 502 is disposed on the intermediate tube 5 and integrally connected with the hook 501.
- the top plug 8 is jammed in the opening portion of the upper end of the recovery chamber 201 in the push rod 2, and the opening is jammed.
- the syringe 1, the push rod 2, the core tube 4, the intermediate tube 5, the buckle cap 6, the top plug 8 and the safety frame 9 are made of a plastic material, wherein the syringe 1 is a transparent plastic material. Since the needle can be automatically retracted, the safety syringe is used for the mounting connection between the above plastic components.
- the assembly is very convenient and is very suitable for automatic assembly production of the assembly line.
- the secondary use safety syringe further includes a push rod anti-backup device, and the push rod anti-backup device includes a stop card basket 10 and a stop chuck 202, and the anti-return card basket 10 is fixedly engaged at the large end of the hollow needle barrel 1 In the inner cavity, the stop chuck 202 is disposed outside the rear (lower) end of the push rod 2. As shown in FIG. 3, when the pusher 2 pushes the liquid medicine, the stop chuck 202 has been opened and retracted from the inner card 10, and enters the front (upper) portion of the anti-return card basket 10, so that the push rod 2 cannot be Pull back (below).
- the embodiment is substantially similar to the embodiment 1, except that the single-use safety syringe with the needle retractable according to the invention further comprises a safety device, and the safety frame 9 of the safety device is fixedly connected to the lower end of the push rod 2,
- the utility model comprises a safety hook groove 901 which is fixedly connected, a safety hook head 902 and an insurance finger 903.
- the safety hook head 902 can be disengaged from the safety hook groove 901 (shown in Figure 1) and hooked (see Figure 2).
- the safety frame 9 also serves as the push button for the pusher 2.
- the safety hook head 902 and the safety hook groove 901 are in an unsecured state, when the push rod 2 is pushed by the hand, the insurance finger 903 is received by the large end (bottom) portion (or the back card basket 10) of the syringe 1
- the topping of the push rod prevents the push rod 2 from continuing to advance, so that the needle retracting device is not activated, so as to prevent the needle from automatically retracting.
- the safety finger 903 pressing the plastic material is elastically bent, the safety hook head 902 and the safety hook groove 901 are hooked, and the safety device does not have an insurance function.
- Embodiment 2 is substantially similar to Embodiment 1, as shown in the figure, except that the disposable safety syringe of the needle retractable according to the present invention further includes a vent hole 203, and the vent hole 203 is provided on the push rod 2. Or on the safety frame 9 fixedly connected thereto, the recovery chamber 201 in the push rod 2 can communicate with the outside of the cavity without being sealed.
- the disposable safety syringe of the needle retractable needle of the present invention is provided with a friction reducing tooth 604 on the cap hole 603 of the buckle cap 6, which can reduce the frictional force with the buckle cap 6 when the core tube 4 is retracted.
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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)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A disposable safety syringe with an automatically retractable needle head comprises a needle head, a needle cylinder (1) and a push rod (2). The needle head comprises a needle tube (3) and a core tube (4). The core tube (4) is a hollow tube. The needle tube (3) is fixedly inserted in the core tube (4). The push rod (2) is inserted in an inner cavity of the needle tube (1). The disposable safety syringe also comprises a needle head positioning and sealing device and a needle head retracting device. The needle head can be automatically retreated and concealed after injection.
Description
一种针头可自动回缩的一次性使用安全注射器 技术领域 Single-use safety syringe with needle retractable automatically
本发明涉及医疗器械技术领域,尤其涉及一种针头可自动回缩的一次性使用 安全注射器。 背景技术 The present invention relates to the field of medical device technology, and more particularly to a single-use safety syringe in which a needle can be automatically retracted. Background technique
在注射药液和预防疫苗时使用一次性无菌注射器, 对于控制医源性传染病、 防止交叉感染等起到了积极作用。 但是, 目前使用的一次性注射器由于结构不合 理, 存在许多不足之处。 一些现有一次性注射器使用后针头裸露在外, 极易造成 锐器伤人, 且存在着直接交叉感染的隐患, 同时, 使用后的注射器仍然完好, 这 给一些不法分子的趁机回收提供了便利, 即把用过以后废弃的注射器经重新处理 后再加以回用, 故很难实现真正意义上的一次性使用。 还有一些注射器构造较复 杂, 组装不方便, 装配中的成品合格率不高, 更不利于流水线自动组装生产, 与 普通注射器相比, 在使用习惯上还有较大的差别。 发明内容 The use of disposable sterile syringes for injecting liquid medicines and preventing vaccines has played a positive role in controlling iatrogenic infectious diseases and preventing cross-infection. However, currently used disposable syringes have many deficiencies due to their unreasonable structure. Some existing disposable syringes are exposed after use, which is easy to cause sharp injuries, and there is a hidden danger of direct cross-infection. At the same time, the syringe after use is still intact, which facilitates the recovery of some criminals. That is, the syringe that has been discarded after use is reprocessed and reused, so that it is difficult to achieve a true one-time use. There are also some syringes that are more complicated in construction, inconvenient to assemble, and the yield of finished products in the assembly is not high, which is not conducive to automatic assembly and production of the assembly line. Compared with ordinary syringes, there is still a big difference in the habit of use. Summary of the invention
本发明的目的在于,针对上述一次性注射器的不足,提出一种新型的针头可 自动回缩的一次性使用安全注射器。 SUMMARY OF THE INVENTION It is an object of the present invention to provide a novel disposable safety syringe in which the needle can be automatically retracted in view of the deficiencies of the disposable syringe described above.
本发明的目的是采用以下技术解决方案来实现的- 一种针头可自动回縮的一次性使用安全注射器, 包括针头、针筒和推杆, 所 述针头包括针管和芯管, 所述芯管为中空通芯管, 所述针管固定嵌插在芯管上, 所述针筒上端为小口端, 下端为大口端, 所述推杆从大口端插入针筒内腔, 其特 征在于, 还包括针头定位密封装置和针头回缩装置; The object of the present invention is achieved by the following technical solution - a needle-returnable self-retracting disposable safety syringe comprising a needle, a syringe and a push rod, the needle comprising a needle tube and a core tube, the core tube a hollow core tube, the needle tube is fixedly embedded in the core tube, the upper end of the barrel is a small mouth end, the lower end is a large mouth end, and the push rod is inserted into the barrel cavity from the large mouth end, and is characterized in that Needle positioning sealing device and needle retracting device;
所述针头定位密封装置包括中间管和扣帽,所述中间管为中空通芯管,其内 腔设有托钩和密封箍,外侧设有中间管卡钩和扣槽,所述扣帽也为中空通芯结构, 并设有扣帽卡钩和限位圈, 所述针头的芯管插在中间管的内腔里, 中间管的托钩 与芯管的底端相抵顶, 而密封箍则与芯管外周密接, 所述中间管插在中空针筒小 口端的内腔中,上部露出针筒, 中间管通过扣槽与针筒内腔中的卡扣相扣合固定, 所述扣帽的管壁插入中间管内腔, 并外套于芯管,芯管的上部通过帽孔伸出扣帽,
扣帽卡钩则置于中间管外侧, 扣帽通过扣帽卡钩与中间管卡钩卡接固定, 扣帽的 限位圈压抵芯管的上凸台; The needle positioning sealing device comprises an intermediate tube and a buckle cap, wherein the middle tube is a hollow core tube, the inner cavity is provided with a hook and a sealing hoop, and the outer side is provided with an intermediate tube hook and a buckle groove, and the buckle cap is also The utility model has a hollow core structure, and is provided with a buckle cap hook and a limiting ring, wherein the core tube of the needle is inserted into the inner cavity of the middle tube, and the hook of the middle tube abuts the bottom end of the core tube, and the sealing band Then, it is closely connected to the outer circumference of the core tube. The middle tube is inserted into the inner cavity of the small end of the hollow needle barrel, and the upper part exposes the syringe barrel. The middle tube is fastened and fastened to the buckle in the inner cavity of the syringe barrel through the buckle groove, and the buckle cap is fastened. The tube wall is inserted into the inner tube inner cavity and is jacketed on the core tube, and the upper part of the core tube protrudes through the cap hole, The buckle cap hook is placed outside the middle tube, and the buckle cap is fastened by the buckle hook hook and the middle tube hook, and the limit ring of the buckle cap is pressed against the upper boss of the core tube;
所述针头回缩装置包括压簧、舌条和顶塞, 并在推杆中设有回收腔, 所述压 簧外套在芯管上, 且受扣帽的限位圈和芯管的下凸台压并, 所述舌条设在中间管 上, 与托钩连为一体, 所述顶塞卡塞在推杆中回收腔的上端开口处。 The needle retracting device comprises a compression spring, a tongue and a top plug, and a recovery cavity is arranged in the push rod, the compression spring is jacketed on the core tube, and the limiting ring of the buckle cap and the downward convexity of the core tube The tongue is placed on the intermediate tube and integrated with the hook, and the top plug is jammed at the upper end opening of the recovery chamber in the push rod.
上述针头可自动回缩的一次性使用安全注射器,其特征在于,还包括推杆防 退装置, 所述推杆防退装置包括止退卡篮和止退卡盘, 所述止退卡篮固定卡接在 中空针筒下端的内腔中, 所述止退卡盘设在推杆下端外侧。 The above-mentioned needle can automatically retract the single-use safety syringe, characterized in that it further comprises a push rod anti-backup device, wherein the push rod anti-backup device comprises a stop card basket and a stop chuck, and the stop card basket is fixed The card is snapped into the inner cavity of the lower end of the hollow cylinder, and the anti-return chuck is disposed outside the lower end of the push rod.
上述针头可自动回缩的一次性使用安全注射器,其特征在于,还包括保险装 置, 所述保险装置的保险架固定连接在推杆下端, 其包括固定连为一体的保险钩 槽、 保险钩头和保险指。 The above-mentioned needle can automatically retract the single-use safety syringe, characterized in that it further comprises a safety device, the safety frame of the safety device is fixedly connected to the lower end of the push rod, and comprises a safety hook groove fixedly integrated, and a safety hook head And insurance means.
上述针头可自动回缩的一次性使用安全注射器,其特征在于,还包括通气孔, 所述通气孔设在推杆上。 The single-use safety syringe in which the needle is automatically retractable is characterized in that it further comprises a vent hole, and the vent hole is provided on the push rod.
上述针头可自动回缩的一次性使用安全注射器,其特征在于,所述扣帽的帽 孔上设有减摩齿。 The disposable safety syringe of the above-mentioned needle can be automatically retracted, characterized in that the cap of the buckle cap is provided with friction reducing teeth.
上述针头可自动回缩的一次性使用安全注射器, 其特征在于, 所述针筒、推 杆、 芯管、 中间管、 扣帽、 顶塞及保险架, 采用塑料材料。 The above-mentioned needle can be automatically retracted by the single-use safety syringe, characterized in that the syringe, the push rod, the core tube, the middle tube, the buckle cap, the top plug and the safety frame are made of plastic material.
上述针头可自动回缩的一次性使用安全注射器,其特征在于,所述针筒采用 透明塑料材料。 The disposable safety syringe of the above-described needle can be automatically retracted, characterized in that the syringe is made of a transparent plastic material.
本发明的结构设计合理, 组装方便, 且十分适合于生产流水线自动组装, 提 高了生产的自动化程度及效率, 自动组装的质量好、 合格率高, 本发明使用时不 改变传统的习惯方法, 操作便利, 作用可靠, 注射完成后能使针头自动回缩隐藏, 确保医患人员免遭受污针尖的意外伤害, 有利于实现注射器真正意义上的一次性 使用, 避免血源性疾病的传播, 创造更加卫生、 安全的医疗环境。 The structure of the invention has reasonable structure design, convenient assembly, and is very suitable for automatic assembly of the production line, improves the automation degree and efficiency of the production, has good quality of automatic assembly and high qualification rate, and the invention does not change the traditional customary method when used. Convenient and reliable, the needle can be automatically retracted and hidden after the injection is completed, ensuring that the doctor and patient are protected from accidental injury of the needle tip, which is beneficial to realize the true one-time use of the syringe, avoid the spread of blood-borne diseases, and create more A hygienic and safe medical environment.
本发明的目的、优点和特点,将通过下述附图和实施例的非限制性说明作进 一步解释, 这些实施例是仅作为例子给出的。 附图说明 The objects, advantages and features of the present invention will be further explained by the following description of the accompanying drawings and the accompanying drawings, which are given by way of example only. DRAWINGS
图 1 为本发明装有保护套的针头可自动回缩的一次性使用安全注射器示意 图;
图 2为本发明实施例 1针头可自动回缩的一次性使用安全注射器剖视示意 图; 1 is a schematic view of a single-use safety syringe with a protective sleeve that can be automatically retracted according to the present invention; 2 is a schematic cross-sectional view showing a single-use safety syringe with a needle retractable automatically according to Embodiment 1 of the present invention;
图 3 为本发明针头可自动回缩的一次性使用安全注射器注射完成后针头回 缩状态示意图; Figure 3 is a schematic view showing the state of the needle retraction after the injection of the disposable safety syringe with the needle retractable automatically according to the present invention;
图 4为图 2中芯管、 中间管、 扣帽及压簧装配结构放大示意图; Figure 4 is an enlarged schematic view showing the assembly structure of the core tube, the intermediate tube, the buckle cap and the compression spring of Figure 2;
图 5为保险架可保险状态示意图; Figure 5 is a schematic view of the insurable state of the safety frame;
图 6为本发明中间管剖视示意图; Figure 6 is a cross-sectional view showing the intermediate tube of the present invention;
图 7为本发明扣帽剖视示意图; Figure 7 is a cross-sectional view of the buckle cap of the present invention;
图 8为图 7俯视示意图; Figure 8 is a top plan view of Figure 7;
图 9为本发明针筒剖视示意图; Figure 9 is a schematic cross-sectional view of the syringe of the present invention;
图 10为本发明止退卡篮剖视示意图; Figure 10 is a cross-sectional view showing the stop card basket of the present invention;
图 11为本发明推杆与保险架 (推杆按手)和活塞组合剖视示意图; 图 12为本发明芯管剖视示意图; Figure 11 is a cross-sectional view showing the combination of the push rod and the safety frame (pushing handle) and the piston of the present invention; Figure 12 is a cross-sectional view showing the core tube of the present invention;
图 13为本发明顶塞剖视示意图; Figure 13 is a cross-sectional view showing the top plug of the present invention;
以上附图中: 1-前筒; 101-卡扣; 2-推杆; 201—回收腔; 202—止退卡盘; In the above drawings: 1-front tube; 101-clip; 2-push rod; 201-recovery chamber; 202-stop chuck;
203-通气孔(图中未标出); 3-针管; 4-芯管; 401-上凸台; 402-下凸台; 5_中间 管; 501-托钩; 502-舌条; 503-密封箍; 504-中间管卡钩; 505-扣槽; 6 -扣 帽; 601-扣帽卡钩; 602-限位圈; 603-帽孔; 604-减摩齿; 7-压簧; 8_顶塞; 9 - 保险架 (推杆按手); 901-保险钩槽; 902-保险钩头; 903-保险指; 10-止退卡篮; 1 1-活塞; 12-针头保护帽。 具体实施方式 203-ventilation hole (not shown); 3-needle tube; 4-core tube; 401-upper boss; 402-lower boss; 5_ middle tube; 501-to-hook; 502-tongue; Sealing ferrule; 504-intermediate tube hook; 505-fastening groove; 6 - buckle cap; 601- buckle cap hook; 602-limit ring; 603-cap hole; 604-antifriction; 7-pressure spring; _ top plug; 9 - safety frame (pushing hand); 901-insurance hook groove; 902-insurance hook head; 903-insurance finger; 10-stop card basket; 1 1-piston; 12-needle protection cap. detailed description
实施例 1 : Example 1
本发明一种针头可自动回缩的一次性使用安全注射器如图 1、 图 2、 图 3和 图 4所示, 包括针头、 针筒 1和推杆 2, 所述针头包括针管 3和芯管 4 , 所述芯管 4为中空通芯管, 其上端幵口为小口, 下端开口为大口, 针头的针管 3和芯管 4 采用现有技术连接, 针管 3固定嵌插在芯管 4上, 推杆 2插入针筒 1内腔一端外 周固定设有活塞 1 1, 推杆 2从针筒 1大口端 (下端)插入其内腔, 可通过活塞 11 起密封作用, 其属现有技术, 本发明不作详细说明。 针头可自动回缩的一次性使 用安全注射器针头的一端套有针头保护帽 12。
本发明一次性使用安全注射器还包括针头定位密封装置,所述针头定位密封 装置包括中间管 5和扣帽 6, 所述中间管 5为中空通芯管, 其内腔设有托钩 501 和密封箍 503,外侧设有中间管卡钩 504和扣槽 505。所述扣帽 6主体也为中空通 芯管, 其外侧设有扣帽卡钩 601和限位圈 602。 所述针头的芯管 4插在中间管 5 的内腔里, 中间管 5的托钩 501与芯管 4的底端相抵顶, 而密封箍 503则与芯管 4 外周密接, 起密封作用。 由于本发明针头可自动回缩的一次性使用安全注射器 的密封箍 503与中间管 5设计成一体的构件, 不仅密封效果很好, 而且对制作和 装配也十分方便。 所述中间管 5套插在中空针筒 1小口端 (上端)的内腔中, 上部 露出针筒 1。 中间管 5与针筒 1固定卡接, 即中间管 5通过其扣槽 505与针筒 1 内腔中的卡扣 101相固定扣合。 所述扣帽 6的管壁插入中间管 5内腔, 并外套于 芯管 4, 芯管 4的上部通过帽孔 603伸出扣帽 6, 扣帽卡钩 601则置于中间管 5 外侧, 扣帽 6通过扣帽卡钩 601与中间管卡钩 504卡接, 使扣帽 6与中间管 5卡 接固定, 并且, 扣帽 6的限位圈 602压抵芯管 4的上凸台 401。 针头受其芯管 4 底端与托钩 501的抵顶和限位圈 602压抵芯管 4的上凸台 401等作用, 在注射器 针筒上 1定位。 A single-use safety syringe with a needle retractable automatically as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4 includes a needle, a syringe 1 and a push rod 2, the needle including a needle tube 3 and a core tube 4, the core tube 4 is a hollow core tube, the upper end of the mouth is a small mouth, the lower end opening is a large mouth, the needle needle 3 of the needle and the core tube 4 are connected by the prior art, the needle tube 3 is fixedly embedded in the core tube 4, The push rod 2 is inserted into the inner cavity of the syringe 1 and is fixedly provided with a piston 1 1 . The push rod 2 is inserted into the inner cavity from the large end (lower end) of the syringe 1 , and can be sealed by the piston 11 , which belongs to the prior art. The invention will not be described in detail. A needle protection cap 12 is attached to one end of the single-use safety syringe needle to which the needle can be automatically retracted. The disposable safety syringe of the present invention further comprises a needle positioning sealing device comprising an intermediate tube 5 and a buckle cap 6, the intermediate tube 5 being a hollow core tube, the inner cavity being provided with a hook 501 and a seal The hoop 503 has an intermediate tube hook 504 and a buckle groove 505 on the outer side. The main body of the buckle cap 6 is also a hollow core tube, and a buckle cap 601 and a limiting ring 602 are disposed on an outer side thereof. The core tube 4 of the needle is inserted into the inner cavity of the intermediate tube 5, and the hook 501 of the middle tube 5 abuts against the bottom end of the core tube 4, and the sealing band 503 is in close contact with the outer periphery of the core tube 4 to seal. Since the sealing ferrule 503 of the single-use safety syringe of the needle retractable by the needle of the present invention is designed as an integral member with the intermediate tube 5, not only the sealing effect is good, but also the production and assembly are very convenient. The intermediate tube 5 is sleeved in the inner cavity of the small end (upper end) of the hollow needle barrel 1, and the upper part exposes the syringe 1. The intermediate tube 5 is fixedly engaged with the syringe 1 , that is, the intermediate tube 5 is fixedly engaged with the buckle 101 in the inner cavity of the syringe 1 through the buckle groove 505 thereof. The wall of the buckle cap 6 is inserted into the inner cavity of the intermediate tube 5, and is jacketed on the core tube 4. The upper portion of the core tube 4 extends through the cap hole 603 to extend the buckle cap 6, and the buckle cap hook 601 is placed outside the intermediate tube 5. The buckle cap 6 is engaged with the middle tube hook 504 by the buckle cap hook 601 to fasten the buckle cap 6 and the intermediate tube 5, and the limit ring 602 of the buckle cap 6 is pressed against the upper boss 401 of the core tube 4. . The needle is pressed by the bottom end of the core tube 4 and the abutting of the hook 501 and the limit ring 602 against the upper boss 401 of the core tube 4, and is positioned on the syringe barrel 1.
本发明针头可自动回缩的一次性使用安全注射器还包括针头回缩装置,所述 针头回缩装置包括压簧 7、 舌条 502和顶塞 8, 并在推杆 2中设有回收腔 201。 所 述压簧 7外套在芯管 4上,且受扣帽 6的限位圈 602和芯管 4的下凸台 402压并。 所述舌条 502设在中间管 5上, 与托钩 501连为一体, 所述顶塞 8卡塞在推杆 2 中回收腔 201上端的开口部位, 卡塞住其开口。 当药液注射完毕, 推杆 2上端推 顶舌条 502时, 舌条 502弹性外张, 带动托钩 501与所抵顶的芯管 4脱开, 同时, 上芯管 4的底端将顶塞 8顶縮回落入推杆 2中的回收腔 201中, 芯管 4在压簧 7 推压下台阶 402的作用下, 也与压簧 7—同落入回收腔 201中, 实现针头自动回 缩隐藏。 The disposable safety syringe for automatically retracting the needle of the present invention further comprises a needle retracting device comprising a compression spring 7, a tongue 502 and a top plug 8, and a recovery chamber 201 is provided in the push rod 2 . The compression spring 7 is jacketed on the core tube 4, and the limit ring 602 of the buckle cap 6 and the lower boss 402 of the core tube 4 are pressed together. The tongue strip 502 is disposed on the intermediate tube 5 and integrally connected with the hook 501. The top plug 8 is jammed in the opening portion of the upper end of the recovery chamber 201 in the push rod 2, and the opening is jammed. When the injection of the liquid medicine is completed, when the top end of the push rod 2 pushes the top tongue 502, the tongue 502 elastically stretches outward, and the supporting hook 501 is disengaged from the core tube 4 which is abutted, and at the same time, the bottom end of the upper core tube 4 is topped. The top of the plug 8 is retracted into the recovery chamber 201 of the push rod 2, and the core tube 4 is also pressed into the recovery chamber 201 by the pressure spring 7 under the action of the pressing spring 7 to push the needle back to the recovery chamber 201. Shrink hidden.
本实施例中, 针筒 1、 推杆 2、 芯管 4、 中间管 5、 扣帽 6、 顶塞 8及保险架 9采用塑料材料制成, 其中针筒 1为透明塑料材料。 由于针头可自动回缩的一次 性使用安全注射器上述各塑料构件之间的安装连接均采用套装卡接形式, 因此组 装非常方便, 并且十分适合于流水线自动组装生产口 In this embodiment, the syringe 1, the push rod 2, the core tube 4, the intermediate tube 5, the buckle cap 6, the top plug 8 and the safety frame 9 are made of a plastic material, wherein the syringe 1 is a transparent plastic material. Since the needle can be automatically retracted, the safety syringe is used for the mounting connection between the above plastic components. The assembly is very convenient and is very suitable for automatic assembly production of the assembly line.
实施例 2: Example 2:
本实施例与实施例 1基本相似,不同之处在于,本发明针头可自动回缩的一
次性使用安全注射器还包括推杆防退装置, 所述推杆防退装置包括止退卡篮 10 和止退卡盘 202, 所述止退卡篮 10固定卡接在中空针筒 1大口端的内腔中, 所述 止退卡盘 202设在推杆 2后(下)端外侧。 如图 3所示, 推压推杆 2注射药液完毕 时, 止退卡盘 202已经由内撑开止退卡篮 10, 进入止退卡篮 10前 (上)部, 使推 杆 2不能向后(下)抽回。 This embodiment is basically similar to Embodiment 1, except that the needle of the present invention can be automatically retracted. The secondary use safety syringe further includes a push rod anti-backup device, and the push rod anti-backup device includes a stop card basket 10 and a stop chuck 202, and the anti-return card basket 10 is fixedly engaged at the large end of the hollow needle barrel 1 In the inner cavity, the stop chuck 202 is disposed outside the rear (lower) end of the push rod 2. As shown in FIG. 3, when the pusher 2 pushes the liquid medicine, the stop chuck 202 has been opened and retracted from the inner card 10, and enters the front (upper) portion of the anti-return card basket 10, so that the push rod 2 cannot be Pull back (below).
实施例 3 Example 3
本实施例与实施例 1基本相似,不同之处在于,本发明针头可自动回缩的一 次性使用安全注射器还包括保险装置, 所述保险装置的保险架 9固定连接在推杆 2下端, 其包括固定连为一体的保险钩槽 901、 保险钩头 902和保险指 903。 保险 钩头 902能与保险钩槽 901脱开(见图 1所示)和钩合(见图 2所示)。 保险架 9兼 作推杆 2的按手。 当保险钩头 902与保险钩槽 901处于脱开的可保险状态下, 通 过按手推动推杆 2时,保险指 903受针筒 1大口端底(下)部 (或止退卡篮 10)的抵 顶, 使推杆 2不能继续推进, 故不使针头回缩装置启动, 达到不让针头自动回缩 的目的。 如按压塑料材料的保险指 903作弹性弯曲时, 使保险钩头 902与保险钩 槽 901处于钩合状态, 保险装置不起保险作用。 The embodiment is substantially similar to the embodiment 1, except that the single-use safety syringe with the needle retractable according to the invention further comprises a safety device, and the safety frame 9 of the safety device is fixedly connected to the lower end of the push rod 2, The utility model comprises a safety hook groove 901 which is fixedly connected, a safety hook head 902 and an insurance finger 903. The safety hook head 902 can be disengaged from the safety hook groove 901 (shown in Figure 1) and hooked (see Figure 2). The safety frame 9 also serves as the push button for the pusher 2. When the safety hook head 902 and the safety hook groove 901 are in an unsecured state, when the push rod 2 is pushed by the hand, the insurance finger 903 is received by the large end (bottom) portion (or the back card basket 10) of the syringe 1 The topping of the push rod prevents the push rod 2 from continuing to advance, so that the needle retracting device is not activated, so as to prevent the needle from automatically retracting. When the safety finger 903 pressing the plastic material is elastically bent, the safety hook head 902 and the safety hook groove 901 are hooked, and the safety device does not have an insurance function.
实施例 4 Example 4
本实施例与实施例 1基本相似, 如图所示, 不同之处在于, 本发明针头可自 动回缩的一次性使用安全注射器还包括通气孔 203 , 所述通气孔 203设在推杆 2 上或与其固定连接的保险架 9上, 使推杆 2中回收腔 201能与腔外连通而不呈密 闭状态。 This embodiment is substantially similar to Embodiment 1, as shown in the figure, except that the disposable safety syringe of the needle retractable according to the present invention further includes a vent hole 203, and the vent hole 203 is provided on the push rod 2. Or on the safety frame 9 fixedly connected thereto, the recovery chamber 201 in the push rod 2 can communicate with the outside of the cavity without being sealed.
另外, 本发明针头可自动回缩的一次性使用安全注射器所述扣帽 6 的帽孔 603上设有减摩齿 604, 其能减小芯管 4回缩时与扣帽 6的摩擦力。 Further, the disposable safety syringe of the needle retractable needle of the present invention is provided with a friction reducing tooth 604 on the cap hole 603 of the buckle cap 6, which can reduce the frictional force with the buckle cap 6 when the core tube 4 is retracted.
上述实施例仅作为说明之例,并不是对本发明所作的限定,本发明还可以采 用其他方式、 步骤进行实施, 在此不作一一冗述。 凡采用等同替换或等效变换形 成的技术方案, 均属于本发明要求的保护范围。
The above embodiments are merely illustrative and are not intended to limit the invention. The invention may be implemented in other manners and steps, and will not be described in detail herein. Any technical solution formed by equivalent replacement or equivalent transformation is within the scope of protection required by the present invention.
Claims
1、 一种针头可自动回缩的一次性使用安全注射器, 包括针头、 针筒(υ和推 杆 (2) , 所述针头包括针管(3)和芯管 (4), 所述芯管 (4)为中空通芯管, 所述针管 (3)固定嵌插在芯管 (4)上, 所述针筒(1)上端为小口端, 下端为大口端, 所述推杆 (2)从大口端插入针筒(1)内腔, 其特征在于, 还包括针头定位密封装置和针头回 缩装置; A disposable safety syringe with a needle retractable automatically, comprising a needle, a syringe (a cymbal and a push rod (2), the needle comprising a needle tube (3) and a core tube (4), the core tube ( 4) is a hollow core tube, the needle tube (3) is fixedly embedded in the core tube (4), the upper end of the barrel (1) is a small mouth end, the lower end is a large mouth end, and the push rod (2) is The large mouth end is inserted into the inner cavity of the syringe (1), and is characterized in that it further comprises a needle positioning sealing device and a needle retracting device;
所述针头定位密封装置包括中间管 (5)和扣帽 (6), 所述中间管 (5)为中空通 芯管, 其内腔设有托钩 (501)和密封箍 (503), 外侧设有中间管卡钩 (504)和扣槽 (505), 所述扣帽(6)也为中空通芯结构, 并设有扣帽卡钩 (601)和限位圈(602), 所述针头的芯管(4)插在中间管(5)的内腔里, 中间管(5)的托钩(501)与芯管(4) 的底端相抵顶,而密封箍 (503)则与芯 (4)管外周密接,所述中间管(5)插在中空针 筒(1)小口端的内腔中, 上部露出针筒(1), 中间管(5)通过扣槽 (505)与针筒(1) 内腔中的卡扣(101)相扣合固定,所述扣帽 (6)的管壁插入中间管 (5)内腔,并外套 于芯管 (4) ,芯管 (4)的上部通过帽孔 (603)伸出扣帽(6) ,扣帽卡钩 (601)则置于中 间管 (5)外侧,扣帽 (6)通过扣帽卡钩 (601)与中间管卡钩 (504)卡接固定,扣帽(6) 的限位圈 (602)压抵芯管 (4)的上凸台(401); The needle positioning sealing device comprises an intermediate tube (5) and a buckle cap (6), the intermediate tube (5) is a hollow core tube, and the inner cavity is provided with a hook (501) and a sealing band (503), the outer side The intermediate tube hook (504) and the buckle groove (505) are provided, and the buckle cap (6) is also a hollow core structure, and is provided with a buckle cap hook (601) and a limiting ring (602), The core tube (4) of the needle is inserted into the inner cavity of the intermediate tube (5), the hook (501) of the middle tube (5) abuts the bottom end of the core tube (4), and the sealing band (503) is The outer circumference of the core (4) tube is closely connected, the middle tube (5) is inserted in the inner cavity of the small end of the hollow needle cylinder (1), the upper part exposes the syringe (1), and the middle tube (5) passes through the buckle groove (505) and the needle The buckle (101) in the inner cavity of the cylinder (1) is fastened and fixed, the wall of the buckle cap (6) is inserted into the inner cavity of the intermediate tube (5), and is jacketed on the core tube (4), the core tube (4) The upper part protrudes through the cap hole (603) to extend the buckle cap (6), the buckle cap hook (601) is placed outside the middle tube (5), and the buckle cap (6) passes the buckle cap hook (601) and the middle tube The hook (504) is snap-fitted, and the limiting ring (602) of the buckle cap (6) is pressed against the upper boss (401) of the core tube (4);
所述针头回缩装置包括压簧 (7)、舌条 (502)和顶塞 (8) ,并在推杆 (2)中设有 回收腔 (201),所述压簧 (7)外套在芯管 (4)上,且受扣帽 (6)的限位圈(602)和芯管 (4)的下凸台(402)压并,所述舌条 (502)设在中间管 (5)上,与托钩(501)连为一体, 所述顶塞 (8)卡塞在推杆 (2)中回收腔 (201)的上端开口处。 The needle retracting device comprises a compression spring (7), a tongue (502) and a top plug (8), and a recovery chamber (201) is arranged in the push rod (2), and the compression spring (7) is jacketed On the core tube (4), and the limit ring (602) of the buckle cap (6) and the lower boss (402) of the core tube (4) are pressed together, and the tongue strip (502) is disposed in the middle tube (5) The upper plug (8) is integrally connected with the hook (501), and the top plug (8) is jammed at the upper end opening of the recovery chamber (201) in the push rod (2).
2、 根据权利要求 1所述的针头可自动回缩的一次性使用安全注射器, 其特 征在于, 还包括推杆防退装置, 所述推杆防退装置包括止退卡篮(10)和止退卡盘 (202) ,所述止退卡篮(1 0)固定卡接在中空针筒下端的内腔中,所述止退卡盘 (202) 设在推杆下端外侧。 2. The needle-retractable disposable safety syringe according to claim 1, further comprising a push rod anti-backup device, wherein the push rod anti-backup device comprises a stop card basket (10) and The retracting tray (202) is fixedly engaged in the inner cavity of the lower end of the hollow cylinder, and the anti-return chuck (202) is disposed outside the lower end of the push rod.
3、 根据权利要求 1所述的针头可自动回缩的一次性使用安全注射器, 其特 征在于, 还包括保险装置, 所述保险装置的保险架 (9)固定连接在推杆(2 )下端, 其包括固定连为一体的保险钩槽 (901)、 保险钩头 (902)和保险指 (903)。 3. The needle-returnable self-retracting disposable safety syringe according to claim 1, further comprising a safety device, wherein the safety frame (9) of the safety device is fixedly connected to the lower end of the push rod (2). It includes a fixed hook groove (901), a safety hook head (902) and a safety finger (903).
4、 根据权利要求 1所述的针头可自动回缩的一次性使用安全注射器, 其特 征在于, 还包括通气孔 (203), 所述通气孔 (203)设在推杆 (2)上。
4. The needle-retractable disposable safety syringe according to claim 1, further comprising a venting hole (203), the venting hole (203) being provided on the push rod (2).
5、 根据权利要求 1所述的针头可自动回缩的一次性使用安全注射器, 其特 征在于, 还包括通气孔 (203), 所述通气孔 (203)设在保险架 (9)上。 A disposable safety syringe for automatically retracting a needle according to claim 1, further comprising a vent (203), said vent (203) being provided on the safety frame (9).
6、 根据权利要求 1所述的针头可自动回缩的一次性使用安全注射器, 其特 征在于, 所述扣帽(6)的帽孔 (603)上设有减摩齿(604)。 A disposable safety syringe with a needle retractable according to claim 1, wherein the cap hole (603) of the buckle cap (6) is provided with friction reducing teeth (604).
7、 根据权利要求 1、 2、 3、 4、 5或 6所述的针头可自动回缩的一次性使用 安全注射器, 其特征在于, 所述针筒(1)、 推杆 (20)、 芯管 (4)、 中间管 (5)、 扣帽 (6)、 顶塞 (8)及保险架 (9), 采用塑料材料。 7. A disposable safety syringe with a needle retractable according to claim 1, 2, 3, 4, 5 or 6, characterized in that said syringe (1), push rod (20), core The tube (4), the intermediate tube (5), the buckle cap (6), the top plug (8) and the safety frame (9) are made of plastic material.
8、 根据权利要求 7所述的针头可自动回缩的一次性使用安全注射器, 其特 征在于, 所述针筒(1)采用透明塑料材料。
8. A disposable safety syringe with a needle retractable according to claim 7, characterized in that said syringe (1) is of a transparent plastic material.
Applications Claiming Priority (2)
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CN200910007801.X | 2009-02-08 | ||
CN200910007801XA CN101480511B (en) | 2009-02-08 | 2009-02-08 | Disposable safety syringe with syringe needle capable of automatically retracting |
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WO2010088845A1 true WO2010088845A1 (en) | 2010-08-12 |
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PCT/CN2010/000171 WO2010088845A1 (en) | 2009-02-08 | 2010-02-08 | Disposable safety syringe with automatically retractable needle head |
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CN (1) | CN101480511B (en) |
WO (1) | WO2010088845A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101480511B (en) * | 2009-02-08 | 2011-10-05 | 浙江康康医疗器械有限公司 | Disposable safety syringe with syringe needle capable of automatically retracting |
CN103330976B (en) * | 2013-07-18 | 2015-05-13 | 徐昊华 | Safe injector |
CN105709309A (en) * | 2016-01-06 | 2016-06-29 | 徐昊华 | Intelligent safe injection syringe |
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CN101480511A (en) | 2009-07-15 |
CN101480511B (en) | 2011-10-05 |
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