WO2013163942A1 - 一种顶出自毁式注射器 - Google Patents

一种顶出自毁式注射器 Download PDF

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Publication number
WO2013163942A1
WO2013163942A1 PCT/CN2013/074837 CN2013074837W WO2013163942A1 WO 2013163942 A1 WO2013163942 A1 WO 2013163942A1 CN 2013074837 W CN2013074837 W CN 2013074837W WO 2013163942 A1 WO2013163942 A1 WO 2013163942A1
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WO
WIPO (PCT)
Prior art keywords
syringe
needle seat
needle
self
rib
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Application number
PCT/CN2013/074837
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English (en)
French (fr)
Inventor
蔡根顺
Original Assignee
Cai Genshun
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 Cai Genshun filed Critical Cai Genshun
Publication of WO2013163942A1 publication Critical patent/WO2013163942A1/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
    • 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
    • A61M5/3129—Syringe barrels
    • A61M5/3134—Syringe barrels characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula
    • 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
    • A61M2005/3206—Needle or needle hub disconnecting devices forming part of or being attached to the hub or syringe body
    • 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
    • A61M2005/5006—Having means for destroying the syringe barrel, e.g. by cutting or piercing

Definitions

  • the invention belongs to the technical field of single-use syringes, and particularly relates to an ejection self-destructing syringe.
  • Disposable plastic syringes are now widely available. A typical disposable syringe is discarded after being used once, so that the syringe can be prevented from being used again and the virus is transmitted, which is safer and healthier.
  • the disposable syringes currently on the market are complicated to use, have troublesome use, and cannot achieve complete self-destruction, and the production cost is high, which is not conducive to promotion.
  • the object of the present invention is to provide a problem of existing disposable syringes for customer service, and to provide a self-destructing syringe that is reasonable in design, convenient to use, and low in cost, and which is advantageous for promotion.
  • An ejection self-destructing syringe includes a syringe, an injection rod, a needle holder and a needle fixed to the needle holder, and the needle holder is provided with a liquid passage for connecting the needle and the syringe
  • the upper end of the injection rod is provided with a piston
  • the lower part of the needle seat is formed with a convex rib
  • the inner wall of the end portion of the injection barrel connecting the needle holder is formed with a bayonet portion, and the bayonet portion cooperates with the convex rib to prevent the needle seat from coming out of the injection.
  • the sleeve on the lower side of the rib is sleeved with a sealing ring which is closely attached to the inner wall of the syringe.
  • a central portion of the upper end of the injection rod is provided with a columnar protrusion, and a central portion of the columnar protrusion is formed with a convex ring, and a columnar protrusion above the convex ring is engaged with a movable sleeve, and a columnar convexity between the movable sleeve and the convex ring
  • the cover is provided with a blocking piece, and the piston is disposed outside the movable sleeve, and the inside of the piston is provided with a cavity for the injection rod to protrude from the top of the piston when the piston is deformed by force.
  • the bayonet portion is an annular groove formed on the inner wall of the end portion of the syringe barrel, or the bayonet portion is a retaining ring formed on the inner wall of the end portion of the syringe barrel.
  • an inner wall of the injection cylinder on the lower side of the groove is formed with an upper limit convex ring that matches the upper edge of the sealing ring.
  • the inner wall of the injection cylinder on the lower side of the limiting collar is formed with a lower limit position matching the lower edge of the sealing ring. Convex ring.
  • the finger rest portion at the lower end of the syringe is formed with a heart-shaped or apple-shaped contour rib.
  • the syringe and the needle seat of the invention are snap-fitted with each other, and sealed by a sealing ring at the lower part of the needle seat, and only a certain amount of the injection rod is applied after the injection is completed.
  • the needle holder can be easily ejected from the syringe to achieve self-destruction of the syringe; the device adopts a secondary ejection mode, that is, the injection rod first ejects the needle holder, and then the sealing ring is ejected, and the medical staff only needs to The injection rod exerts a small force to make the syringe self-destruct, and its structure is reasonable and easy to operate.
  • the finger rest of the syringe is formed with a reinforcing rib which increases the strength of the finger rest, and the outer contour of the rib is heart-shaped or apple-shaped.
  • the utility model has the advantages of beautiful appearance and good feeling of use by the medical staff; the structure of the invention is reasonable, the production cost is low, the product is convenient to be recycled after use, and is easy to be popularized, and is suitable for use by medical personnel.
  • FIG. 1 is an exploded view of respective components of a first embodiment of the present invention.
  • Fig. 2 is a schematic structural view of a first embodiment of the present invention.
  • Figure 3 is an enlarged view of A of Figure 1.
  • Figure 4 is an enlarged view of B of Figure 2.
  • Fig. 5 is a schematic view showing the preliminary self-destruction of the first embodiment of the present invention.
  • Figure 6 is a schematic diagram of Figure 5 after self-destruction.
  • Figure 7 is a schematic view of a syringe and a hub of a second embodiment of the present invention.
  • Figure 8 is a schematic view showing the second embodiment of the present invention in preparation for self-destruction.
  • Figures 9 and 10 are C-C views of the syringes of the two different configurations in Figure 2, respectively.
  • Figure 10 is a schematic view of a third embodiment of the present invention.
  • Figure 11 is an enlarged view of the portion D of Figure 10.
  • an ejection self-destructing syringe includes a syringe 4, an injection rod 9, a needle holder 3, and a needle 2 fixed to the needle holder 3.
  • the needle holder 3 is provided with Connecting the needle 2 and the through hole of the syringe 4, the upper end of the injection rod 9 is provided with a piston 6, and the inner wall of the end portion of the syringe 4 connecting the needle holder 3 is formed with an annular groove 42, and the lower portion of the needle holder 3 is formed with The rib 31 is engaged with the groove 42, and the needle seat 3 on the lower side of the rib 31 is sleeved with a sealing ring 5 which is in close contact with the inner wall of the syringe 4.
  • the sealing ring 5 ensures the liquid medicine during the injection.
  • the outside of the needle holder 3 and the syringe 4 are not oozing out.
  • the middle portion of the upper end of the injection rod 9 is provided with a columnar protrusion 91.
  • the middle portion of the columnar protrusion 91 is formed with a convex ring 910, and the columnar protrusion 91 above the convex ring 910 is engaged with a movable sleeve 7, a movable sleeve 7 and a convex ring.
  • the columnar protrusion 91 between the 910 is provided with a blocking piece 8 on the outer side of which the piston 6 is disposed, and the inside of the piston 6 is provided with an empty space for the injection rod 9 to protrude from the top of the piston 6 when the piston 6 is deformed by force. Cavity 61.
  • the inner wall of the syringe 4 on the lower side of the groove 42 is formed with an upper limit collar which is matched with the upper edge of the seal ring 5
  • the front end portion of the syringe 4 is of a straight-through type, the front and rear port diameters are substantially the same, and the front end portion does not need to be radially retracted to form a needle seat mounting portion, and the syringe of the present invention is simple in processing and easy to form, and compared.
  • the medical staff uses the syringe in the conventional manner until the injection of the liquid medicine is completed (to the state shown in Fig. 5, the liquid medicine is completely injected), at this time, the upper end of the piston 6 contacts the lower end of the sealing ring 5 ( The piston 6 is not deformed), the medical staff removes the syringe from the human body, and aligns the needle 2 of the syringe with the sanitary tub, and then applies a certain force to the injection rod 9, at which time the flap 8 is forced against the injection rod 9 Move down and pass the columnar projection at the upper end of the injection rod 9 After the convex ring 910 in the middle of the 91, the injection rod 9 extends the end of the movable sleeve 7 out of the piston 6 and is pressed against the lower part of the needle holder 3 (when the flap 8 does not pass the convex ring 910, the injection rod 9 passes through the flap 8 simultaneously The top piston 6 and the movable sleeve 7), the
  • Embodiment 2 as shown in FIG. 7 and FIG. 8, this embodiment is basically the same as Embodiment 1, except that the upper end of the syringe 4 is radially retracted to form a hub mounting portion 46, and the hub mounting portion 46 A groove 42 is formed on the inner wall of the upper end portion, and the needle holder 3 is formed with a rib 31 that is engaged with the groove 42.
  • the inner wall of the needle seat mounting portion 46 of the syringe is formed with the upper edge of the sealing ring 5.
  • the shape of the upper limit collar 43 determines whether the seal ring 5 can be ejected out of the syringe 4, and the lower limit collar 45 is designed such that the seal ring 5 does not move downward.
  • Embodiment 3 as shown in FIGS. 11 and 12, this embodiment is basically the same as Embodiment 1, except that: the bayonet portion is a retaining ring 47 formed on the inner wall of the end portion of the syringe, on the needle seat.
  • the inner wall of the syringe 4 is formed with an upper limit collar 48 which cooperates with the upper edge of the seal ring 5, and a lower limit collar 49 which cooperates with the lower edge of the seal ring 5.
  • the finger rest portion 41 at the lower end of the syringe 4 is formed with a heart-shaped or apple-shaped outer contour rib 411 which enhances the strength of the finger extension 41 of the syringe 4 and enables injection.
  • the tube 4 is more aesthetically pleasing, and the medical staff feels better when using it.

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

Abstract

一种顶出自毁式注射器，属于一次性使用的注射器技术领域，包括注射筒（4）、注射杆（9）、针座（3）和固定在针座（3）上的针头（2），针座（3）上设置有连通针头（2）和注射筒（4）的通液孔，注射杆（9）的上端设置有活塞（6），针座（3）的下部成型有凸筋（31），连接针座（3）的注射筒（4）的端部内壁上成型有卡口部，卡口部与凸筋（31）卡位配合并阻止针座（3）脱出注射筒（4），凸筋（31）下侧的针座（3）上套设有与注射筒（4）内壁紧贴的密封圈（5），注射杆（9）上推至一定位置时可使针座（3）克服卡口部给予凸筋（31）的阻力，进而将针座（3）顶出注射筒（4）。注射完毕后只需要再对注射杆（9）施加一定的力，即可轻易将针座（3）顶出注射筒（4），以实现注射器自毁，其结构合理、生产成本较低、产品使用后回收方便，适合医护人员使用。

Description

一种顶出自毁式注射器
技术领域
本发明属于一次性使用的注射器技术领域， 特指一种顶出自毁式注射器。
背景技术
在随着社会的进步发展， 人们对医疗的要求越来越高， 医疗器械也在不断的创新和改进， 尤其在注射器方面的改进已经有了很大的提高。 目前， 一次性塑料注射器已经得以广泛的使 用。 一般的一次性注射器在使用一次后便废弃， 因而可以防止注射器再次使用而导致病毒传 染， 较为安全卫生。 但是， 目前市场上的一次性注射器由于结构设计较为复杂， 使用麻烦， 且不能实现完全自毁， 生产成本较高， 不利于推广。
发明内容
本发明的目的是提供一种客服现有的一次性注射器存在的问题， 提出一种设计合 理、 使用方便、 且成本较低， 利于推广的顶出自毁式注射器。
本发明的目的是这样实现的： 一种顶出自毁式注射器， 包括注射筒、 注射杆、 针座和固 定在针座上的针头， 针座上设置有连通针头和注射筒的通液孔， 注射杆的上端设置有活塞， 针座的下部成型有凸筋， 连接针座的注射筒的端部内壁上成型有卡口部， 卡口部与凸筋卡位 配合并阻止针座脱出注射筒， 凸筋下侧的针座上套设有与注射筒内壁紧贴的密封圈， 注射杆 上推至一定位置时可使针座克服卡口部给予凸筋的阻力， 进而将针座顶出注射筒。
进一步， 所述注射杆上端的中部设置有柱状凸起， 柱状凸起的中部成型有凸环， 凸环之 上的柱状凸起上卡接有活动套， 活动套和凸环之间的柱状凸起上套装有挡片， 活动套外侧设 置有所述活塞， 活塞的内部设置有当活塞受力变形时供注射杆伸出活塞顶部的空腔。
进一步， 所述卡口部为成型在注射筒端部内壁上的环形凹槽， 或， 所述卡口部为成型在 注射筒端部内壁上的挡环。
进一步，所述凹槽下侧的注射筒的内壁上成型有与密封圈的上沿配合限位的上限位凸环。 进一步， 所述限位凸环下侧的注射筒的内壁上成型有与密封圈的下沿配合限位的下限位 凸环。
进一步， 所述注射筒下端的指托部成型有心形或苹果形轮廓的加强筋。
本发明相比现有技术突出且有益的技术效果是： 本发明的注射筒和针座互相卡接配合， 并通过针座下部的密封圈密封， 注射完毕后只需用再对注射杆施加一定的， 即可轻易将针座 顶出注射筒， 以实现注射器的自毁； 本装置采用二次顶出的方式， 即注射杆先顶出针 座， 再顶出密封圈， 医护人员只需对注射杆施加较小的力， 便可使注射器自毁， 其结构合理、 操作简便； 注射筒的指托部成型有增加指托部的强度的加强筋， 加强筋的外轮廓心形或苹果 形， 其造型美观， 医护人员使用手感好； 本发明的结构合理、 生产成本较低， 产品使用后回 收方便， 较容易进行推广， 适合医护人员使用。
附图说明
图 1 是本发明的第一实施例的各部件分解图。
图 2 是本发明的第一实施例的结构简图。
图 3 是图 1 的 A处放大图。
图 4 是图 2 的 B 处放大图。
图 5 是本发明第一实施例的预备自毁时的示意图。
图 6 是图 5 自毁后的示意图。
图 7 是本发明的第二实施例的注射筒和针座的示意图。
图 8 是本发明的第二实施例预备自毁时的示意图。
图 9 和图 10 分别为图 2 中的两种不同结构的注射筒的 C-C 视图。
图 10 为本发明的第三实施例的示意图。
图 11为图 10的 D处放大图。
图中： 1、 护套； 2、 针头； 3、 针座； 4、 注射筒； 5、 密封圈； 6、 活塞； 7、 活动套； 8、 挡圈； 9、 注射杆； 31、 凸筋； 41、 指托部； 42、 凹槽； 43、 上限位凸环； 44、 密封圈安装部； 45、 下限位凸环； 46、 针座安装部； 61、 空腔； 91、 柱状凸起； 411、 加强筋； 910、 凸环；
32、 凸筋； 47、 挡环； 48、 上限位凸环； 49、 下限位凸环。
具体实施方式
下面结合附图以具体实施例对本发明作进一步描述。
实施例 1， 如图 1-6 所示， 一种顶出自毁式注射器， 包括注射筒 4、 注射杆 9、 针座 3和 固定在针座 3 上的针头 2， 针座 3 上设置有连通针头 2 和注射筒 4 的通液孔， 注射杆 9 的 上端设置有活塞 6， 连接针座 3 的注射筒 4 的端部内壁上成型有环形的凹槽 42， 针座 3 的 下部成型有与所述的凹槽 42 卡接配合的凸筋 31， 凸筋 31 下侧的针座 3 上套设有与注射筒 4内壁紧贴的密封圈 5， 密封圈 5 保证了注射时， 药液不会通过针座 3 和注射筒 4 的配合间 隙渗出外部。
上述注射杆 9 上端的中部设置有柱状凸起 91， 柱状凸起 91 的中部成型有凸环 910、 凸 环 910 之上的柱状凸起 91 上卡接有活动套 7， 活动套 7 和凸环 910 之间的柱状凸起 91 上 套装有挡片 8， 活动套 7 外侧设置有所述活塞 6， 活塞 6 的内部设置有当活塞 6 受力变形时 供注射杆 9 伸出活塞 6 顶部的空腔 61。
上述凹槽 42 下侧的注射筒 4 的内壁上成型有与密封圈 5 的上沿配合限位的上限位凸环
43。
本实施例中， 注射筒 4 的前端部为直通型， 前、 后端口径基本相同， 前端部无需径向内 缩形成针座安装部， 本发明的注射筒加工简单， 成型容易， 且相比传统的注射筒， 在同 等规格下， 用料较小， 大批量生产时， 成本明显降低。
本发明的工作原理： 医护人员按传统方式使用本注射器， 至药液注射完毕（ 至图 5 中所 示状态， 药液完全注射完毕)， 此时， 活塞 6 的上端接触密封圈 5 的下端（ 活塞 6 未变 形)， 医护人员将注射器从人体上退下， 并将注射器的针头 2 对准卫生桶， 然后， 用施加一定 的力至注射杆 9， 此时， 挡片 8 受力相对注射杆 9 下移， 并通过注射杆 9 上端的柱状凸起 91中部的凸环 910 后， 注射杆 9 使活动套 7 端部伸出活塞 6 并顶紧在针座 3 的下部（挡片 8未通过凸环 910 时， 注射杆 9 通过挡片 8 同时上顶活塞 6 和活动套 7)， 活动套 7 向上顶 起针座 3， 针座 3 脱离注射筒 4(此时密封圈 5 保持原位)， 再用较大的力推注射杆 9 使注射 杆 9通过活塞 6 将密封圈 5 从注射筒 4 的上端部顶出（ 如图 6 所示状态)， 至此， 注射器完 全自毁。
实施例 2， 如图 7和图 8 所示， 本实施例和实施例 1 基本相同， 其不同之处在于： 注射 筒 4 的上端径向内缩形成针座安装部 46， 针座安装部 46 的上端部内壁上成型有凹槽 42， 针 座 3 上成型有与凹槽 42 卡接配合的凸筋 31， 注射筒的针座安装部 46 的内壁上成型有与密 封圈 5上沿配合的上限位凸环 43， 以及， 与密封圈 5下沿配合的下限位凸环 45， 本实施例的 针座 3 可被注射杆 9 顶出注射筒 4， 而密封圈 5 则不能被顶出（ 上限位凸环 43 的形状决定 密封环 5 能否被顶出注射筒 4， 下限位凸环 45的设计使得密封圈 5不会发生下移)。
实施例 3， 如图 11， 12所示， 本实施例和实施例 1 基本相同， 其不同之处在于： 所述卡 口部为成型在注射筒端部内壁上的挡环 47， 针座上对应成型有凸筋 32， 注射筒 4的内壁上成 型有与密封圈 5上沿配合的上限位凸环 48， 以及， 与密封圈 5下沿配合的下限位凸环 49。
如图 9、 图 10 所示， 注射筒 4 下端的指托部 41 成型有心形或苹果形外轮廓的加强筋 411， 加强筋 411 增强了注射筒 4 的指拓部 41 的强度， 且使得注射筒 4 更具美观效果， 医 护人员使用时手感更佳。
上述实施例仅为本发明的较佳实施例， 并非依此限制本发明的保护范围， 故： 凡依本发 明的结构、 形状、 原理所做的等效变化， 均应涵盖于本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种顶出自毁式注射器， 包括注射筒、 注射杆、 针座和固定在针座上的针头， 针座上设置 有连通针头和注射筒的通液孔， 注射杆的上端设置有活塞， 其特征在于： 针座的下部成型有 凸筋， 连接针座的注射筒的端部内壁上成型有卡口部， 卡口部与凸筋卡位配合并阻止针座脱 出注射筒， 凸筋下侧的针座上套设有与注射筒内壁紧贴的密封圈， 注射杆上推至一定位置时 可使针座克服卡口部给予凸筋的阻力， 进而将针座顶出注射筒。
2. 根据权利要求 1 所述的一种顶出自毁式注射器， 其特征在于： 所述注射杆上端的中部设 置有柱状凸起， 柱状凸起的中部成型有凸环， 凸环之上的柱状凸起上卡接有活动套， 活动套 和凸环之间的柱状凸起上套装有挡片， 活动套外侧设置有所述活塞， 活塞的内部设置有当活 塞受力变形时供注射杆伸出活塞顶部的空腔。
3. 根据权利要求 2所述的一种顶出自毁式注射器， 其特征在于： 所述卡口部为成型在注射 筒端部内壁上的环形凹槽。
4. 根据权利要求 2 所述的一种顶出自毁式注射器， 其特征在于： 所述卡口部为成型在注射 筒端内壁上的挡环。
5. 根据权利要求 3 或 4所述的一种顶出自毁式注射器， 其特征在于： 所述凹槽下侧的注射 筒的内壁上成型有与密封圈的上沿配合限位的上限位凸环。
6. 根据权利要求 5 所述的一种顶出自毁式注射器， 其特征在于： 所述限位凸环下侧的注射 筒的内壁上成型有与密封圈的下沿配合限位的下限位凸环。
7. 根据权利要求 1 所述的一种顶出自毁式注射器， 其特征在于： 所述注射筒下端的指托部 成型有心形或苹果形轮廓的加强筋。
PCT/CN2013/074837 2012-05-03 2013-04-27 一种顶出自毁式注射器 WO2013163942A1 (zh)

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CN103550849A (zh) * 2013-10-06 2014-02-05 蔡根顺 一种新型顶出自毁式注射器
JP7067485B2 (ja) 2016-12-22 2022-05-16 日本電気株式会社 情報処理システム、顧客特定装置、情報処理方法及びプログラム
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