WO2010127487A1 - 自动回缩式非液态药剂的安全针具 - Google Patents

自动回缩式非液态药剂的安全针具 Download PDF

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Publication number
WO2010127487A1
WO2010127487A1 PCT/CN2009/071665 CN2009071665W WO2010127487A1 WO 2010127487 A1 WO2010127487 A1 WO 2010127487A1 CN 2009071665 W CN2009071665 W CN 2009071665W WO 2010127487 A1 WO2010127487 A1 WO 2010127487A1
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WO
WIPO (PCT)
Prior art keywords
needle
rod
liquid medicament
retractable
safety
Prior art date
Application number
PCT/CN2009/071665
Other languages
English (en)
French (fr)
Inventor
林李李
Original Assignee
明辰股份有限公司
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 明辰股份有限公司 filed Critical 明辰股份有限公司
Priority to PCT/CN2009/071665 priority Critical patent/WO2010127487A1/zh
Publication of WO2010127487A1 publication Critical patent/WO2010127487A1/zh

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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
    • A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
    • A61M37/0069—Devices for implanting pellets, e.g. markers or solid medicaments
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle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
    • A61M5/3205—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

Definitions

  • the utility model relates to the field of medical instruments, in particular to a safety needle for automatically retracting non-liquid medicaments. Background technique
  • the needle is used to inject or blood to the human body, to control or clear the bacteria in the body, and to screen and treat various diseases and symptoms. From the convenience of treatment, the efficiency of management, the correctness of medication, the accuracy of dose, the anti-blocking property of pseudo-drugs, the difference of products, etc., pre-filled needles have become medicines and needles. An important development trend of the industry.
  • the injectable pharmaceuticals are not limited to traditional liquid pharmaceuticals.
  • Non-liquid innovative pharmaceuticals such as solid and colloidal injections, are gradually increasing.
  • Non-liquid pharmaceuticals must be treated with special needles. Injection, but injection needles for non-liquid medicaments are rarely seen at present.
  • the main purpose of the safety needle for the automatic retractable non-liquid medicament provided by the utility model is to provide a non-liquid medicament medicine bottle which can be placed in a safety syringe which can be automatically retracted, and the non-liquid medicament in the medicine bottle
  • the rod in the retracting rod of the retractable push rod is pushed, and the needle tube of the needle seat is injected into the human body, and the retractable push rod is pressed against the top medicine bottle and pushed against the needle seat, and the buckle is driven by the tension of the spring.
  • the hook is slid at the end of the needle seat by a plurality of u-shaped slides, so that the needle can be automatically retracted.
  • Another object of the safety needle for automatically retracting non-liquid medicament provided by the present invention is to provide a non-liquid medicament bottle which can be placed in a safety syringe which can be automatically retracted, and when the injection is completed, the needle The seat, vial and retraction rod can be retracted in the syringe to prevent needle stick damage and contamination.
  • Another object of the present invention is to provide a safety needle for an automatic retractable non-liquid medicament, which is to provide a non-liquid medicament bottle which can be placed in a safety syringe which can be automatically retracted, and the retractable push rod
  • the inner retracting rod is retracted in the hollow rod, and the hollow rod encircling has a convex rib portion capable of being fitted into the concave rib portion in the barrel, thereby forming an integrally recovered safety needle.
  • the embodiment of the present invention provides a safety needle for an automatic retracting non-liquid medicament, and the technical solution is as follows:
  • An automatic retractable non-liquid medicament needle the needle device comprising at least: a syringe Needle holder, spring, pill bottle and can Reduced push rod
  • the syringe has a plurality of hooks for holding the needle seat, and guides the needle seat and the bottle body to retract into the syringe after the injection is completed;
  • a needle tube penetrating the needle hub is disposed at a center of the needle hub, and a center of the needle tube has a conveying lane, and the conveying lane supplies a guiding of the non-liquid medicament;
  • the spring is disposed between the needle holders, and the needle seat has a rebounding power
  • the medicine bottle is approximately T-shaped, and is filled with a non-liquid medicament at the center, a rubber plug is formed at one end and an annular convex rib portion is formed, and a concentric circular inclined surface is formed at the opening of the other end, as a rod of the retractable push rod Body guidance
  • the collapsible push rod comprises two mutually fitting rod bodies, wherein one rod body has a larger diameter than the other rod body, and a rod body is centrally located at one end of the rod body having a smaller diameter, and can be condensed into the same tube body when used.
  • the rod having a smaller diameter forms an annular concave rib at one end of the inner edge.
  • the needle hub forms a complex approximate u-shaped groove slide at the end.
  • the U-shaped groove slide is composed of a positioning groove, a ramp, a rotating slide and a through slide.
  • the diameter of the outer edge of the inner diameter of the retractable push rod is smaller than the diameter of the inner edge of the hollow rod.
  • the inner retracting rod is slidable at an inner edge of the hollow rod.
  • the barrel forms a concave rib on the inner edge.
  • the non-liquid medicament is in the form of a gel or a solid.
  • the concave rib portion of the smaller diameter rod is interlocked with the rib portion of the vial.
  • One side plane of the vial is a convex rib.
  • the rib portion is intermeshing with the front end of the rod having a smaller diameter.
  • the utility model has the beneficial effects that: the rod body in the inner shrinking rod of the retractable push rod pushes against the non-liquid medicament in the medicine bottle, and the non-liquid medicine is injected into the human body through the needle tube of the needle seat, when the injection is completed,
  • the needle holder, the vial and the inner retracting rod are automatically retracted in the syringe to form an integrated retractable safety needle to prevent the infected needle from being exposed to medical personnel, cleaning personnel, or any other third party after use. It causes needle damage and pollution, is easy to use, and also considers the health and safety of users, cleaning personnel and even anyone who may be accidentally touched.
  • FIG. 1 is a perspective exploded view of a safety needle for an automatic retractable non-liquid medicament provided by the present invention.
  • FIG. 2 is a schematic plan view of a needle of a safety needle for an automatic retractable non-liquid medicament provided by the present invention.
  • 3-1 is a schematic cross-sectional view of a vial receiving syringe of the safety needle of the self-retracting non-liquid medicament provided by the utility model.
  • Fig. 3-2 is a schematic cross-sectional view of the inner rod of the safety needle of the self-retracting non-liquid medicament provided by the utility model pushed against the non-liquid medicament.
  • Fig. 3-3 is a schematic view showing the medicine bottle and the collapsible push rod buckle of the safety needle of the automatic retractable non-liquid medicament provided by the utility model.
  • Figure 3-4 is a schematic view of the needle seat and the hook action of the safety needle of the self-retracting non-liquid medicament provided by the utility model.
  • Fig. 4 is a schematic view showing the disengagement of the retracting rod and the hollow rod of the collapsible push rod of the safety retracting needle of the self-retracting non-liquid medicament provided by the utility model.
  • Fig. 5 is a schematic view showing the needle holder, the medicine bottle and the retracting rod of the safety needle of the self-retracting non-liquid medicament provided by the utility model.
  • Fig. 6 is a schematic view showing the retracting completion of the safety needle of the self-retracting non-liquid medicament provided by the utility model.
  • Fig. 7 is a schematic view showing the embodiment of the medicine bottle and the collapsible push rod buckle of the safety needle of the automatic retractable non-liquid medicament provided by the utility model.
  • Syringe 11 hook 110 , ear handle 111 , inner cylinder 112 , inner cylinder concave rib 113 ;
  • Needle seat 13 blocking piece 130, conveying path 1300, apron groove 1301, positioning groove 131, ramp 132, rotating slide 133, through slide 134, needle tube 135, apron 136;
  • Medicine bottle 14 accommodating channel 140, rubber stopper 141, medicament 142, ampule rib 143;
  • Retractable push rod 15 inner shrink rod 150, rod body 1500, inner shrink rod rib portion 1501, inner shrink rod concave rib portion 1502, hollow rod 151, hollow rod rib portion 1510, stopper 1511, hollow rod concave Rib 1512;
  • FIG. 1 and FIG. 2 are schematic exploded perspective views of the safety needle of the automatic retractable non-liquid medicament provided by the utility model.
  • the medicine bottle of the non-liquid medicament can be placed in a safety syringe which can be automatically retracted, and the safety needle of the automatic retractable non-liquid medicament
  • the invention includes at least: a cover 10, a syringe 11, a spring 12, a needle holder 13, a vial 14, and a retractable push rod 15, and the needle holder 13 and the vial after the injection are guided by the annular spring 12. 14 retracts in the opposite direction of the injection, thereby forming a safety needle that is integrally recovered.
  • the cover 10 is a cylindrical cover with an open side, and the cover is at one end of the syringe 11 to prevent the needle tip from penetrating;
  • the syringe 11 is a hollow tube whose one end is narrower than the other end, in diameter
  • the narrower end portion forms a corresponding hook 110
  • the wider end portion forms a ring-shaped ear handle 111, the hook 110 of the syringe 11 is used for fixing the spring 12 and the needle seat 13, and the inner tube 112 can be stored.
  • the medicine bottle 14 and the retractable push rod 15 are stored in the inner tube 112 after the injection is completed;
  • the needle holder 13 has a needle tube 135 extending through the center of the needle holder 13
  • One end of the needle tube 135 is formed with a tip portion, and a conveying path 1300 is formed in the needle tube 135.
  • a plurality of positioning grooves 131, a ramp 132, a rotating slide 133 and a through slide 134 are provided at one end of the needle holder 13, a plurality of positioning grooves 131, a ramp 132, a rotating slide 133 and a through slide 134 are provided.
  • the slot 131, the ramp 132, the rotating slide 133 and the through slide 134 form an approximately U-shaped retracting slide, and the positioning slot 131 forms a buckle with the hook 110 of the syringe 11 to position the hook 110 in the positioning slot.
  • the vial 14 is a T-shaped bottle body, and a through-the-receiving channel 140 is formed in the center of the vial 14 to place the medicament 142. Further, at the larger diameter end of the vial 14, a rubber plug 141 having a center is a perforation.
  • the retractable push rod 15 is formed by fitting the hollow rod 151 and the inner retracting rod 150, and the retracting rod 150
  • the diameter of the outer circumference is equal to the diameter of the inner circle of the hollow rod 151, wherein the center of one end of the inner rod 150 is fixed at one end
  • the body 1500 is used for injecting the medicine 142 in the medicine bottle 14 through the conveying path 1300 of the needle holder 13 into the human body, and then the outer circumference of the hollow rod 151 forms an annular convex rib 1510 corresponding to the inner tube 112 of the syringe 11
  • the concave rib 113, the plurality of stoppers 1511 and the ear stem 111 are
  • the medicine bottle of the needle, the syringe and the needle holder are combined.
  • the medicine bottle 14 is a T-shaped tube body, and a rubber stopper 141 is set at one end, and a receiving passage 140 is formed at the center of the medicine bottle 14 for placing the medicine 142.
  • the medicament 142 may be in the form of a gel or a solid.
  • the vial 14 is received in the inner cylinder 112 of the syringe 11 and pushed forward to the top of the needle holder 13 to open the receiving passage 140.
  • the narrow end of the vial 14 is opened to form a funnel-shaped inclined surface Y, and the rod 1500 of the retracting rod 150 can be poured into the accommodating passage 140 through the inclined surface.
  • the pharmaceutical agent 142 is pushed toward one end, and when the medicament 142 is injected into the human body, the concave rib 1502 at one end of the inner edge of the inner shrinking rod 150 is engaged with the convex rib 143 at one end of the vial 14 to make the vial 14 and the retracting rod 150
  • the retracting rod 150 is prevented from slipping when retracting, and the retractable push rod 15 is pressed against the pharmaceutical bottle 14, and the needle holder 13 is pushed toward one end, so that the clasp 110 slides out of the positioning groove 131 through the ramp 132 and slides into the sliding state.
  • the stopper 1511 of the hollow rod 151 of the retractable push rod 15 and the ear stem 111 of the syringe 11 are reserved with an appropriate distance X, so that When the hollow rod 151 is disengaged from the inner retracting rod 150, there is a compression space.
  • the spring 12 reaches a fully tightened state, and then the hollow rod 151 is advanced toward the front end to force the end of the hollow rod 151 to be concave.
  • the rib 1512 is disengaged from the convex rib 1501 of the inner retracting rod 150.
  • FIG. 5 and FIG. 6 are schematic diagrams of the needle holder, the medicine bottle and the retracting and storing of the safety needle of the automatic retractable non-liquid medicament provided by the utility model, and the hollow rod 151 of the retractable push rod 15
  • the two rods are separated by the retracting rod 150, and the outer rib 1510 of the hollow rod 151 slides down into the concave rib 113 in the inner cylinder 112 of the barrel 11 to be fixed, and is stretched by the spring 12
  • the buckle 110 is slid away from the sliding chute 133 to the through slide 134 (not shown, see FIG. 1), and the needle holder 13, the vial 14 and the retracting rod 150 are pushed back to the vial 14 .
  • FIG. 7 it is a schematic diagram of an embodiment of a safety bottle of a safety retractable non-liquid medicament provided by the present invention and a collapsible push rod.
  • the side of the end of the vial 14 forms a convex rib. 143, the outer circumference diameter is equal to or slightly smaller than the outer circumference diameter of the inner retracting rod 150.
  • the utility model has the beneficial effects that: the rod body in the inner shrinking rod of the retractable push rod pushes against the non-liquid medicament in the medicine bottle, and the non-liquid medicine is injected into the human body through the needle tube of the needle seat, when the injection is completed,
  • the retractable push rod is pressed against the top bottle and pushed against the needle seat to realize the disengagement of the retracting rod of the retractable push rod, and at the same time, the buckle is driven by the spring to make the plurality of U-shaped slides at the end of the needle seat slip.
  • the needle holder, the medicine bottle and the inner shrinking rod are automatically retracted in the hollow rod, and the hollow rod ring has a convex rib portion that can be embedded in the concave rib in the barrel, thereby forming an integral recovery safety needle, Prevents the needle tip from being infected and exposed to medical personnel, cleaning personnel, or any other third party due to exposure. It is easy to use and also considers the use. Health care for the person, the cleaning staff and even anyone who may be accidentally exposed.

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Description

自动回缩式非液态药剂的安全针具 技术领域
本实用新型涉及医药器具领域， 特别涉及一种自动回缩式非液态药剂的安全针具。 背景技术
针具用以对人体施以注射或血液抽取， 将体内中的病菌控制或清除及对各种病症与症状 作筛检与治疗。 从治疗上使用的方便性、 管理的效率性、 用药的正确性、 剂量的准确性、 伪 药的防堵性、 产品的差异性等方面考虑， 预填式的针具已成为医药及针具产业的重要发展趋 势。
随着医药产业的不断创新研发， 注射用的药剂已经不局限于传统的液态药剂， 非液态的 创新药剂， 如固态、 胶态等注射用剂型也渐渐增加， 非液态药剂必须以特殊针具进行注射， 但目前很少见到非液态药剂的注射针具。
实用新型内容
本实用新型提供的自动回缩式非液态药剂的安全针具的主要目的， 是提供一种非液态药 剂的药瓶可放置在可以自动回缩的安全针筒中， 该药瓶中的非液态药剂， 经过可缩式推杆的 内缩杆中的棒体推抵， 由针座的针管注射进人体中， 可缩式推杆抵顶药瓶并推抵针座， 通过 弹簧的拉伸带动扣钩在针座端部复数 u型滑道进行滑移， 使该针具能够自动回缩。
本实用新型提供的自动回缩式非液态药剂的安全针具的另一目的， 是提供一种非液态药 剂的药瓶可以放置在可以自动回缩的安全针筒中， 在注射完成时， 该针座、 药瓶及内缩杆可 以回缩在针筒中， 以防止针扎伤害及污染。
本实用新型提供的自动回缩式非液态药剂的安全针具的又一目的， 是提供一种非液态药 剂的药瓶可放置在可以自动回缩的安全针筒中， 该可缩式推杆的内缩杆回缩在中空杆中， 而 中空杆环围具有凸肋部能够嵌卡在针筒内的凹肋部， 从而形成一体回收的安全针具。
本实用新型实施例提供了一种自动回缩式非液态药剂的安全针具， 所述技术方案如下： 一种自动回缩式非液态药剂的针具， 所述针具至少包括： 针筒， 针座， 弹簧， 药瓶和可 缩式推杆；
所述针筒具有复数扣钩以扣持所述针座， 并在注射完成后引导该针座与瓶体回縮至针筒 内；
所述针座中心处设置有贯穿所述针座的针管， 所述针管中心有输送道， 所述输送道供予 非液态药剂的导送；
所述弹簧设置在所述针座间， 供针座具有回弹的动力；
所述药瓶近似 T型状， 在中心处填装非液态药剂， 一端设置胶塞及形成环状凸肋部， 另 一端开口处形成同心圆状斜面， 作为所述可缩式推杆的棒体的引导；
所述可缩式推杆包含有两个相互嵌合的杆体， 其中一个杆体直径大于另一个杆体， 且于 直径较小的杆体的一端中心有一棒体， 使用时能缩合为同一管体， 所述直径较小的杆体在内 缘一端形成环状凹肋部。
所述针座在端部形成复数近似 u型凹槽滑道。
所述 U型凹槽滑道由定位槽、 坡道、 旋转滑道及贯穿滑道构成。
所述可缩式推杆的内缩杆外缘的直径小于中空杆内缘的直径。
所述内缩杆可在所述中空杆内缘滑移。
所述针筒在内缘形成凹肋部。
所述非液态药剂为胶状或固状。
所述直径较小的杆体的凹肋部与所述药瓶的凸肋部相互扣制。
所述药瓶的一侧平面为凸肋部。
所述凸肋部与所述直径较小的杆体前端嵌扣。
本实用新型的有益效果是： 可缩式推杆的内缩杆中的棒体推抵药瓶中的非液态药剂， 通 过针座的针管将非液态药剂注射于人体中， 在注射完成时， 将针座、 药瓶及内缩杆自动回缩 存在针筒中， 从而形成一体回收的安全针具， 以防止使用后已感染的针尖因外露而对医疗人 员、 清洁人员， 或任何其它第三者造成针扎伤害及污染， 使用方便， 同时也考虑了使用者、 清洁人员甚至任何可能意外触及者的健康安全。
附图说明
图 1是本实用新型提供的自动回缩式非液态药剂的安全针具的立体分解示意图。
图 2是本实用新型提供的自动回缩式非液态药剂的安全针具的针具平面示意图。 图 3-1是本实用新型提供的自动回缩式非液态药剂的安全针具的药瓶容置针筒剖面示意 图。
图 3-2是本实用新型提供的自动回缩式非液态药剂的安全针具的内缩杆棒体推抵非液态 药剂剖面示意图。
图 3-3是本实用新型提供的自动回缩式非液态药剂的安全针具的药瓶与可缩式推杆扣制 示意图。
图 3-4 是本实用新型提供的自动回縮式非液态药剂的安全针具的针座与扣钩动作示意 图。
图 4是本实用新型提供的自动回缩式非液态药剂的安全针具的可缩式推杆的内縮杆和中 空杆脱离示意图。
图 5是本实用新型提供的自动回缩式非液态药剂的安全针具的针座、 药瓶、 内缩杆回缩 示意图。
图 6是本实用新型提供的自动回缩式非液态药剂的安全针具的回缩完成示意图。
图 7是本实用新型提供的自动回缩式非液态药剂的安全针具的药瓶与可缩式推杆扣制的 实施例示意图。
附图中， 各标号所代表的部件列表如下：
护盖 10
针筒 11 : 扣钩 110， 耳把 111， 内筒 112， 内筒凹肋部 113 ;
弹簧 12
针座 13 : 挡片 130， 输送道 1300， 胶圈槽 1301， 定位槽 131， 坡道 132， 旋转滑道 133， 贯穿滑道 134， 针管 135， 胶圈 136;
药瓶 14: 容置道 140， 胶塞 141， 药剂 142， 药瓶凸肋部 143 ;
可縮式推杆 15 : 内缩杆 150， 棒体 1500， 内缩杆凸肋部 1501， 内缩杆凹肋部 1502， 中 空杆 151， 中空杆凸肋部 1510， 挡块 1511， 中空杆凹肋部 1512;
距离 X
斜面 Y
具体实施方式
为使本实用新型的目的、 技术方案和优点更加清楚， 下面将结合附图对本实用新型实施 方式作进一步地详细描述。 实施例 1
本实用新型实施例提供了一种自动回縮式非液态药剂的安全针具， 参见图 1及图 2， 为 本实用新型提供的自动回缩式非液态药剂的安全针具的立体分解示意图。 本实用新型实施例 提供的自动回缩式非液态药剂的安全针具中， 非液态药剂的药瓶可以放置在可以自动回缩的 安全针筒中， 该自动回缩式非液态药剂的安全针具至少包括： 一护盖 10、 一针筒 11、 一弹簧 12、 一针座 13、 一药瓶 14和一可缩式推杆 15， 通过环形弹簧 12引导注射完毕后的针座 13 与药瓶 14朝注射反方向回缩， 从而构成一体回收的安全针具。
其中， 护盖 10是一侧开口的圆筒状盖体， 扣盖在针筒 11的一端， 以防止针管尖端穿刺 伤害； 针筒 11是一端直径较另一端窄的中空管体，在直径较窄的一端部形成相互对应的扣钩 110，直径较宽的一端部形成环状耳把 111，针筒 11的扣钩 110用于弹簧 12与针座 13的固定， 而内筒 112可存放药瓶 14与可缩式推杆 15， 在注射完成后针座 13、 药瓶 14及可缩式推杆 15存放于内筒 112中； 针座 13中有一个贯穿针座 13中心的针管 135， 该针管 135的一端形 成尖部，且针管 135中形成一输送道 1300，在针座 13的一端设有复数定位槽 131、坡道 132、 旋转滑道 133及贯穿滑道 134，这些复数定位槽 131、坡道 132、旋转滑道 133及贯穿滑道 134 形成近似 U型的回缩滑道，而定位槽 131与针筒 11的扣钩 110形成卡扣，使扣钩 110定位在 定位槽 131内， 当弹簧 12进一步被压缩时， 针筒 11的扣钩 110沿着定位槽 131、 坡道 132、 旋转滑道 133及贯穿滑道 134形成的近似 U型滑道移动， 使得针座 13朝注射反方向回缩， 在针座 13另一端形成一圆盘状的挡片 130， 该挡片 130具有环形凹状的胶圈槽 1301供胶圈 136套设， 在弹簧 12回缩时， 挡片 130可与针筒 11的内筒 112环围壁面抵接； 该药瓶 14是 近似 T状的瓶体， 在药瓶 14中心形成贯穿的容置道 140以放置药剂 142， 另在药瓶 14直径 较大一端套设一个中心是一穿孔的胶塞 141， 并在胶塞 141的后端形成环状凸肋部 143，用于 和可缩式推杆 15的内缩杆 150扣制， 又在药瓶 14直径较小的一端由中心处向环围形成漏斗 状的斜面 Y，用于引导可缩式推杆 15的棒体 1500的置入； 该可缩式推杆 15由中空杆 151及 内縮杆 150相嵌合而成， 内缩杆 150的外环围直径等于中空杆 151内圆的直径， 其中内縮杆 150的一端中心处固定一棒体 1500， 用于经过针座 13的输送道 1300推送药瓶 14中的药剂 142注射进人体中， 然后中空杆 151外环围形成环状凸肋部 1510对应于针筒 11的内筒 112 的凹肋部 113， 复数挡块 1511与耳把 111相抵， 通过针座 13端部的 U状滑道与针筒 11的扣 钩 110及弹簧 12， 构成可自动回缩的针具， 使药剂 142在注射完后， 将针座 13， 药瓶 14及 可縮式推杆 15存放在针筒 11中， 以防止针扎伤害及污染。
参见图 3-1、 图 3-2、 图 3-3及图 4， 是本实用新型提供的自动回缩式非液态药剂的安全 针具的药瓶， 针筒与针座结合示意图， 药瓶 14是 T状管体， 在一端套设一胶塞 141， 在药瓶 14的中心形成一容置道 140用以放置药剂 142， 该药剂 142可为胶状或固状， 在使用时， 将 药瓶 14容置在针筒 11的内筒 112中， 并向前推移与针座 13相顶， 使容置道 140—端开口与 针座 13的输送道 1300—端开口相对应，而药瓶 14直径较窄的一端开口形成漏斗状的斜面 Y， 内缩杆 150的棒体 1500可通过斜面 Υ倒入容置道 140而抵制药剂 142并朝一端推进， 当药 剂 142注入人体同时， 该内缩杆 150的内缘一端凹肋部 1502与药瓶 14一端的凸肋部 143相 扣， 使药瓶 14与内缩杆 150结合， 防止回缩时内缩杆 150的滑落， 再将可缩式推杆 15抵制 药瓶 14， 将针座 13朝一端推进， 使扣钩 110经坡道 132脱离定位槽 131滑入旋转滑道 133， 此时， 可缩式推杆 15的中空杆 151的挡块 1511与针筒 11的耳把 111预留有适当距离 X， 可 使中空杆 151与内缩杆 150脱离时有压缩空间， 当扣钩 110滑入旋转滑道 133时， 该弹簧 12 达到完全紧缩状态，再将中空杆 151向前端推进迫使中空杆 151端部的凹肋部 1512脱离内缩 杆 150的凸肋部 1501， 中空杆 151的凹肋部 1512与内缩杆 150的凸肋部 1501脱离之后， 弹 簧 12拉伸， 使得针座 13、 药瓶 14及内缩杆 150回缩存于针筒 11内。
参图 5及图 6， 是本实用新型提供的自动回缩式非液态药剂的安全针具的针座、 药瓶及 内缩杆回缩存放示意图，该可缩式推杆 15的中空杆 151与内缩杆 150经再次推抵使二杆体分 离， 而中空杆 151外环围的凸肋部 1510滑落至针筒 11内筒 112中的凹肋部 113中而固定， 经过弹簧 12的拉伸使扣钩 110由旋转滑道 133滑移至贯穿滑道 134而脱离 (此未标示， 参见 图 1)， 将针座 13、 药瓶 14及内缩杆 150向后端推抵至药瓶 14与中空杆 151相抵时停止， 形 成可填装非液态药剂具自动回缩机制的安全针具。
参见图 7， 是本实用新型提供的自动回缩式非液态药剂的安全针具的药瓶与可缩式推杆 相扣的实施例示意图， 该药瓶 14端部的一侧形成凸肋部 143， 其外环围直径同等于或略小于 内缩杆 150的外环围直径， 当药瓶 14中的药剂 142经内缩杆 150的棒体 1500推抵完时， 该 内縮杆 150的一端前缘抵扣在药瓶 14的凸肋部 143中， 使两者结合，在回縮时可以防止内缩 杆 150滑落在针筒 11外。
本实用新型的有益效果是： 可缩式推杆的内缩杆中的棒体推抵药瓶中的非液态药剂， 通 过针座的针管将非液态药剂注射于人体中，在注射完成时，可缩式推杆抵顶药瓶并推抵针座， 实现可缩式推杆的内缩杆的脱离， 同时通过弹簧拉伸带动扣钩， 使针座端部的复数 U型滑道 滑移， 将针座、 药瓶及内缩杆自动回缩存在中空杆中， 而中空杆环围具有凸肋部可以嵌卡在 针筒内的凹肋部， 从而形成一体回收的安全针具， 以防止使用后已感染的针尖因外露而对医 疗人员、 清洁人员， 或任何其它第三者造成针扎伤害及污染， 使用方便， 同时也考虑了使用 者、 清洁人员甚至任何可能意外触及者的健康安全。
以上所述仅为本实用新型较佳实施例， 并非因此限制本实用新型的专利范围。 凡是运用 本实用新型说明书及附图内容所作的等效结构变换， 或直接或间接运用在其它相关的技术领 域， 均同理包括在本实用新型的专利范围内。

Claims

1 . 一种自动回缩式非液态药剂的针具， 所述针具至少包括： 针筒， 针座， 弹簧， 药瓶 和可缩式推杆；
所述针筒具有复数扣钩以扣持所述针座， 并在注射完成后引导该针座与瓶体回縮至针筒 内； 权
所述针座中心处设置有贯穿所述针座的针管， 所述针管中心有输送道， 所述输送道供予 非液态药剂的导送；
所述弹簧设置在所述针座间， 供针座具有回弹的动力；
所述药瓶近似 T型状， 在中心处填装非液态药剂， 一端设置胶塞及形成环状凸肋部， 另 一端开口处形成同心圆状斜面， 作为所述可缩式推杆的棒体的引导；
所述可缩式推杆包含有两个相互嵌合的杆体， 其中一个杆体直径大于另一个杆体， 且于 一杆体的一端中心有一棒体， 使用时能缩合为同一管体， 所述直径较小的杆体在内缘一端形 成环状凹肋部。 书
2. 如权利要求 1 所述的自动回缩式非液态药剂的安全针具， 所述针座在端部形成复数 近似 U型凹槽滑道。
3 . 如权利要求 2所述的自动回缩式非液态药剂的安全针具， 所述 U型凹槽滑道由定位 槽、 坡道、 旋转滑道及贯穿滑道构成。
4如权利要求 1所述的自动回缩式非液态药剂的安全针具， 所述可缩式推杆的内缩杆外 缘的直径小于中空杆内缘的直径。
5. 如权利要求 4所述的自动回缩式非液态药剂的安全针具， 所述内縮杆可在所述中空 杆内缘滑移。
6. 如权利要求 1 所述的自动回缩式非液态药剂的安全针具， 所述针筒在内缘形成凹肋 部。
7. 如权利要求 1 所述的自动回缩式非液态药剂的安全针具， 所述非液态药剂为胶状或 固状。
8. 如权利要求 1 所述的自动回缩式非液态药剂的安全针具， 所述直径较小的杆体的凹 肋部与所述药瓶的凸肋部相互扣制。
9. 如权利要求 1 所述的自动回缩式非液态药剂的安全针具， 所述药瓶的一侧平面为凸 肋部。
10. 如权利要求 9所述的自动回缩式非液态药剂的安全针具， 所述凸肋部与所述直径较 小的杆体前端嵌扣。
PCT/CN2009/071665 2009-05-07 2009-05-07 自动回缩式非液态药剂的安全针具 WO2010127487A1 (zh)

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