WO2024021614A1 - 一种安全针组件 - Google Patents

一种安全针组件 Download PDF

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Publication number
WO2024021614A1
WO2024021614A1 PCT/CN2023/080209 CN2023080209W WO2024021614A1 WO 2024021614 A1 WO2024021614 A1 WO 2024021614A1 CN 2023080209 W CN2023080209 W CN 2023080209W WO 2024021614 A1 WO2024021614 A1 WO 2024021614A1
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WO
WIPO (PCT)
Prior art keywords
base
seat
needle
needle assembly
assembly according
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PCT/CN2023/080209
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English (en)
French (fr)
Inventor
鲁艳
胡超宇
Original Assignee
普昂(杭州)医疗科技股份有限公司
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Publication of WO2024021614A1 publication Critical patent/WO2024021614A1/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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
    • A61M2005/1586—Holding accessories for holding infusion needles on the body

Definitions

  • the present invention relates to the technical field of medical devices, and in particular to a safety needle assembly.
  • Huber safety needles are primarily used as accessories for deep intravenous infusion ports and are often used with implanted ports. Such Huber safety needles are used for chemotherapy, intravenous fluid injection and other operations through the implantation port.
  • the implantation section is a self-sealing diaphragm, which is used to fix the Huber needle and seal around the Huber needle, and the implantation end can achieve multiple times. Pierce without being damaged.
  • the traditional Huber needle provides convenience for patients who need subcutaneous injections, but it may be dangerous to medical staff.
  • Traditional Huber needles generally require two hands to pull out the Huber needle from the implant port, with one hand holding the implant end and the other hand pulling out the needle. The force exerted to withdraw the needle from the self-sealing septum of the implant port may cause the needle to rebound and injure the user. This could result in the transmission of blood-borne pathogens to the user and could even expose the user to dangerous drugs.
  • the US patent No. US10363376B2 discloses a safety device for protecting medical needles, which includes a handle element for connecting a Huber needle, a base, and a connection structure that connects the handle element and the base together, wherein the above connection The structure is foldable. After the injection is completed, the handle element and the Huber needle are pulled away from the base until the connecting structure is deployed. The needle is hidden inside the base, thereby eliminating the risk of stabbing medical staff with traditional Huber needles.
  • the mechanism for protecting the needle is relatively complicated, resulting in a high cost of the safety device, and the reliability needs to be improved.
  • the technical problem to be solved by the present invention is to provide a structurally improved safety needle assembly to solve the defects of the existing technology.
  • a safety needle assembly at least including:
  • a needle tube which is bent to form a transverse tube and a longitudinal tube, and the transverse tube is fixedly connected to the needle seat;
  • a base the side of the base facing the needle seat is provided with a guide hole for accommodating the passage of the longitudinal tube, and a receiving cavity is provided below the guide hole;
  • a connecting member which includes a connecting seat and a foldable connecting piece.
  • the connecting seat is located below the accommodation cavity and is rotatably connected to the base.
  • One end of the connecting piece is connected to the connecting base, and the other end of the connecting piece is connected to the connecting base.
  • One end is connected to the needle seat;
  • the connection seat is provided with a connection hole for receiving the longitudinal tube to pass through;
  • the connector includes a folded state and an unfolded state.
  • the longitudinal tube passes through the guide hole, the accommodation cavity and the connecting hole in sequence; in the unfolded state, the tip of the longitudinal tube is located in the accommodation cavity, and the The connecting seat is rotated until the connecting hole and the longitudinal pipe are in a staggered state.
  • one side of the connecting seat is provided with a non-return flange
  • one side of the accommodation cavity is provided with a non-return flange for adapting to the non-return flange.
  • a gap is provided on the side of the check arm away from the connecting seat.
  • the connecting piece includes at least two connecting rods, and a bendable portion is provided between the needle seat and the connecting rod, between adjacent connecting rods, and between the connecting rod and the connecting seat.
  • pins are provided at both ends of the connecting seat, and the inner wall of the accommodation cavity of the base is provided with pin holes that match the pins.
  • a snap-in mechanism is provided between the needle seat and the base.
  • the connector When the connector is in a folded state, the needle seat and the base are connected together through the snap-in mechanism.
  • the locking mechanism includes:
  • a receiving groove is provided on the side of the base facing the needle seat.
  • the groove walls on both sides of the receiving groove are provided with clamping edges for adapting to the protruding portion.
  • wings are provided on both sides of the needle seat.
  • a bendable portion is provided between the wing portion and the needle seat, and a damping portion is provided on the side of the wing portion facing the base.
  • a positioning engagement structure is provided between the two wings, including positioning engagement protrusions and positioning engagement grooves that are adapted to each other.
  • the connecting seat is provided with a connecting hole for accommodating the longitudinal tube to pass through.
  • the connecting piece When the connecting piece is in the folded state, the longitudinal tube passes through the guide hole, the accommodation cavity and the connecting hole in sequence.
  • the tip of the longitudinal tube When it is in the unfolded state, the tip of the longitudinal tube is located in the accommodation cavity. Since the connecting seat rotates until the connecting hole and the longitudinal tube are in a staggered state, the tip of the needle tube cannot enter the connecting hole again, thereby limiting the tip to the accommodation cavity. Protective effect to prevent stabbing of medical staff.
  • the safety needle assembly of the above structure realizes the protection of the needle tip by arranging a connecting seat that is rotatably connected to the base and a connecting hole on the connecting seat. Compared with the existing technology, the safety needle assembly has a simpler structure and more reliable protection. Lower cost technical advantages.
  • Figure 1 is a schematic structural diagram of the safety needle assembly of this embodiment, in which the connecting piece is in a folded state;
  • FIG 2 is a schematic cross-sectional structural diagram of the safety needle assembly shown in Figure 1;
  • FIG 3 is a schematic structural diagram of the safety needle assembly shown in Figure 1 cut away at the clamping mechanism
  • Figure 4 is a schematic structural diagram of the full needle assembly of this embodiment, in which the connector is in an expanded state;
  • Figure 5 is a partial cross-sectional view of the safety needle assembly shown in Figure 4, taken at the base;
  • Figure 6 is a schematic structural diagram of the safety needle assembly of this embodiment during the change process from the state shown in Figure 1 to the state shown in Figure 4;
  • Figure 7 is a schematic structural diagram of the needle seat and the connecting member in the safety needle assembly of this embodiment, in which the connecting member is in an expanded state;
  • Figure 8 is a schematic view of the back of the structure shown in Figure 7;
  • Figure 9 is a schematic structural diagram of the base of the safety needle assembly of this embodiment.
  • Figure 10 is a schematic structural diagram of the base shown in Figure 9, viewed from a downward perspective;
  • Figure 11 is a schematic cross-sectional structural view of the base shown in Figure 9;
  • FIG. 12 is a schematic three-dimensional view of the cross-sectional structure shown in FIG. 11 .
  • connection should be understood in a broad sense.
  • it can be a fixed connection, an integral connection, or It can be a detachable connection; it can be an internal connection between two elements; it can be a direct connection or an indirect connection through an intermediate medium.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, an integral connection, or It can be a detachable connection; it can be an internal connection between two elements; it can be a direct connection or an indirect connection through an intermediate medium.
  • a safety needle assembly in this embodiment is a Huber safety needle, as shown in Figures 1-4, including a needle seat 10, a needle tube 20, a base 30 and a connecting member 40.
  • the needle tube 20 is bent to form a transverse tube 21 and a longitudinal tube 22.
  • the transverse tube 21 is fixedly connected to the needle seat 10, and the longitudinal tube 22 extends toward the base 30 side.
  • the base 30 of this embodiment includes an annular base 31 and a base 32 arranged on the base 31 .
  • the application layer 50 may be provided at the bottom of the base 31 .
  • a guide hole 33 for accommodating the passage of the longitudinal tube 22 is provided on the side of the base 32 of the base 30 facing the needle seat 10 , and an accommodating cavity 36 is provided below the guide hole 33 .
  • the base 32 of the base 30 is provided with a receiving groove 34, and the groove walls on both sides of the receiving groove 34 are provided with clamping edges 35.
  • the connecting member 40 in this embodiment includes a connecting base 41 and a foldable connecting piece. One end of the connecting piece is connected to the connecting base 41 and the other end is connected to the needle seat 10 .
  • the connecting piece passes through the accommodation groove 34 and is folded and unfolded in the section where the accommodation groove 34 is located.
  • the connecting seat 41 is located below the accommodating cavity 36 and is rotatably connected to the base 30 .
  • pins 43 are provided at both ends of the connecting seat 41.
  • the inner wall of the accommodation cavity 36 of the base 30 is provided with a pin 43 adapted to the Pin hole 37.
  • the connecting piece of this embodiment includes two connecting rods 45.
  • the connecting piece is a preferred mode of this embodiment.
  • the bending portion 46 can also be set as a hinge, and the connecting piece can also be made of flexible material and can be deformed as a whole.
  • the connecting seat 41 is provided with a connecting hole 42 for receiving the longitudinal pipe 22 to pass through.
  • the longitudinal tube 22 passes through the guide hole 33, the accommodation cavity 36 and the connecting hole 42 in sequence, and the tip of the needle tube 20 Extends from the bottom of the base 30 .
  • the needle seat 10 is stretched in a direction away from the base 30 until the connector is in the unfolded state as shown in Figures 4-8.
  • the tip of the longitudinal tube 22 is detached from the connecting hole 42 and is located in the accommodation cavity 36.
  • the connecting member drives the connecting seat 41 to rotate to
  • the connecting hole 41 and the longitudinal tube 22 are in a staggered state, thereby limiting the tip of the longitudinal tube to the accommodation cavity 36, and its tip cannot enter the connecting hole 41 again, and thus cannot be exposed to the bottom of the base 30 again, thereby realizing automatic needle tip protection. Effective to prevent medical staff from being stabbed by mistake.
  • a check flange 44 is provided on one side of the connecting seat 41.
  • a check flange 44 is provided on one side of the accommodating cavity 36 for connecting with the stop.
  • the return stop arm 38 is adapted to the return stop edge 36 .
  • a gap 39 is provided on the side of the check arm 38 away from the connecting seat 41 .
  • the base is made of injection molded parts and has a certain deformation ability.
  • the check rib 36 acts on one side of the check arm 38, driving the check arm 38 to deform toward the gap side until the check rib 36 crosses over.
  • the check arm 38 is reset and cooperates with the check edge 36 to prevent the connecting seat from rotating in the opposite direction.
  • the clamping mechanism in this embodiment includes a pair of clamping arms 17 extending from the bottom of the needle seat 10 to one side of the base 30.
  • the clamping arms 17 have The free end is provided with a protrusion 18 protruding outward. After a pair of clamping arms 17 extend into the receiving groove 34, the pair of protrusions 18 cooperate with the clamping edge 35, so that the needle seat and the base are in a relative position. The position is fixed.
  • the stretching force first drives the protrusion 18 and the clamping edge 35 to disengage, so that the needle seat can be displaced to the side away from the base.
  • the needle seat 10 is provided with wing portions on both sides, namely a left wing portion 11 and a right wing portion 12.
  • the left wing portion 11 and the right wing portion 12 are respectively
  • a bendable portion 13 is provided between the needle seat and the needle seat.
  • the two wings are bent toward the middle, thereby increasing the force application area and making the operation more convenient.
  • a damping part 16 is provided on the side of the wing facing the base 30.
  • the damping part 16 can increase the size of the wing. The friction between the needle base and the user's fingers prevents slipping, making it easier and more convenient to move the needle base away from the base.
  • a positioning engagement structure is provided between the two wing portions, which are a positioning engagement protrusion 14 provided on the left wing portion 11 and a positioning engagement protrusion 14 provided on the right wing portion 12.
  • the positions of the positioning joint protrusions and the positioning joint grooves of the joint groove 15 correspond to each other. After the two wings are bent toward the middle, the two wings can be formed into a whole through the cooperation of the positioning joint protrusions and the positioning joint grooves.

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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

一种安全针组件，包括针座（10）、针管（20）、底座（30）以及连接构件（40），针管（20）弯折形成横管（21）和纵管（22），底座（30）面向针座（10）的一侧设置有容纳纵管（22）通过的引导孔（33），引导孔（33）的下方设置有容置腔，连接构件（40）包括连接座（41）和可折叠的连接件，连接座（41）位于容置腔的下方并与底座（30）旋转活动连接，连接件的一端与连接座（41）连接，另一端与针座（10）连接；连接座（41）上设置有容纳纵管（22）穿过的连接孔（42）。其中，在连接件处于折叠状态时，纵管（22）依次穿过引导孔（33）、容置腔以及连接孔（42），在连接件处于展开状态时，纵管（22）的尖端位于容置腔内，由于连接座（41）旋转至连接孔（42）与纵管（22）呈交错状态，针管（20）的尖端无法再次进入连接孔（42），从而将尖端限制于容置腔内，起到防护作用，防止刺伤医护人员。

Description

一种安全针组件 技术领域
本发明涉及医疗器械技术领域，具体涉及一种安全针组件。
 背景技术
植入式给药装置专用针简称Huber安全针。Huber安全针主要用于深部静脉输液港的配件，通常与植入端口一起使用。这样的Huber安全针通过植入端口进行化疗、静脉注射液等操作，植入段是一种自密封隔膜，用于Huber针的固定及Huber针周边的密封，而且植入端可以实现多次的穿刺而不被损坏。
 技术问题
传统的Huber针给需要进行皮下注射的患者提供了方便，但是对医护人员可能存在一定的危险。 传统的Huber针一般需要两只手从植入端口拔出Huber针，一只手固定植入端，另一只手拔出针。从植入端口的自密封隔膜拔出针所施加的力可能会引起针的反弹并刺伤使用者。这可能会导致将血液性病原体传播给使用者，甚至可能会使使用者接触到危险药物。
专利号为US10363376B2的美国专利公开了一种用于保护医用针的安全装置，包括用于连接Huber针的手柄元件、基座以及将手柄元件和基座连接在一起的连接结构，其中，上述连接结构可折叠，在注射完成，拉动手柄元件和Huber针远离基座运动至连接结构展开后，针头隐蔽在基座内部，从而解决了传统Huber针会刺伤医护人员的风险。但是，上述专利公开的结构中，用于防护针头的机构较为复杂，导致安全装置的成本较高，可靠性有待提升。
 技术解决方案
本发明要解决的技术问题是提供一种结构改进型的安全针组件，以解决现有技术的缺陷。
为了解决上述技术问题，本发明提供的技术方案如下：一种安全针组件，至少包括：
针座；
针管，所述针管弯折形成横管和纵管，所述横管与针座固定连接；
底座，所述底座面向针座的一侧设置有容纳纵管通过的引导孔，所述引导孔的下方设置有容置腔；
连接构件，所述连接构件包括连接座和可折叠的连接件，所述连接座位于所述容置腔的下方并与所述底座旋转活动连接，所述连接件的一端与连接座连接，另一端与针座连接；所述连接座上设置有容纳所述纵管穿过的连接孔；
所述连接件包括折叠状态和展开状态，在折叠状态，所述纵管依次穿过引导孔、容置腔以及连接孔；在展开状态，所述纵管的尖端位于容置腔内，所述连接座旋转至连接孔与纵管呈交错状态。
一种优选的实施例，所述连接座的一侧设置有止回挡边，所述容置腔的一侧设置有用于与所述止回挡边适配的止回挡臂。
一种优选的实施例，所述止回挡臂远离连接座的一侧设置有间隙。
一种优选的实施例，所述连接件包括至少两个连接杆，所述针座与连接杆之间、相邻连接杆之间以及连接杆与连接座之间设置有易弯部。
一种优选的实施例，所述连接座的两端设置有销轴，所述底座的容置腔内壁设置有与所述销轴适配的销孔。
一种优选的实施例，所述针座与底座之间设置有卡接机构，所述连接件处于折叠状态时，所述针座与底座通过所述卡接机构连接在一起。
一种优选的实施例，所述卡接机构包括：
一对自所述针座的底部向底座一侧延伸的卡接臂；
自所述卡接臂的自由端端部向外侧凸出的凸部；
设置于所述底座上面向针座一侧的容纳槽，所述容纳槽的两侧槽壁设置有用于与所述凸部适配的卡沿。
一种优选的实施例，所述针座的两侧设置有翼部。
一种优选的实施例，所述翼部与针座之间设置有可弯折部，所述翼部面向底座的一侧设置有阻尼部。
一种优选的实施例，两个所述翼部之间设置有定位接合结构，包括相互适配的定位接合凸起和定位接合槽。
 有益效果
本实施例的安全针组件，其中，连接座上设置有容纳纵管穿过的连接孔，在连接件处于折叠状态时，纵管依次穿过引导孔、容置腔以及连接孔，在连接件处于展开状态时，纵管的尖端位于容置腔内，由于连接座旋转至连接孔与纵管呈交错状态，针管的尖端无法再次进入连接孔，从而将尖端限制于容置腔内，起到防护作用，防止刺伤医护人员。
上述结构的安全针组件，通过设置与底座旋转连接的连接座并在连接座上设置连接孔的结构，实现了针尖的防护，与现有技术相比，具有结构更加简单、防护更为可靠、成本更低的技术优势。
 附图说明
图1为本实施例安全针组件的结构示意图，其中，连接件处于折叠状态；
图2为图1所示安全针组件的剖视结构示意图；
图3为图1所示安全针组件于卡接机构处剖切的结构示意图；
图4为本实施例全针组件的结构示意图，其中，连接件处于展开状态；
图5为图4所示安全针组件于底座部位剖切的局部剖视图；
图6为本实施例的安全针组件在从图1所示状态向图4所示状态变化过程中的结构示意图；
图7为本实施例的安全针组件中针座与连接构件的结构示意图，其中，连接件处于展开状态；
图8为图7所示结构的背面示意图；
图9为本实施例的安全针组件中底座的结构示意图；
图10为图9所示底座的仰视视角结构示意图；
图11为图9所示底座的剖视结构示意图；
图12为图11所示剖视结构的立体状态示意图。
 本发明的最佳实施方式
在此处键入本发明的最佳实施方式描述段落。
本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
在本发明的描述中，需要理解的是，术语 “上”、“下”、“前”、“后”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，一体地连接，也可以是可拆卸连接；可以是两个元件内部的连通；可以是直接相连，也可以通过中间媒介间接相连，对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
本实施例的一种安全针组件，为Huber安全针，如图1-4所示，包括针座10、针管20、底座30以及连接构件40。
其中，针管20弯折形成横管21和纵管22，所述横管21与针座10固定连接在一起，纵管22向底座30一侧延伸。
其中，本实施例的底座30，如图9-图12所示，包括环状的基座31和设置于基座31上的基体32。作为优选，其中，基座31的底部可以设置敷贴层50。
本实施例中，所述底座30的基体32面向针座10的一侧设置有容纳纵管22通过的引导孔33，该引导孔33的下方设置有容置腔36。
本实施例中，所述底座30的基体32上设置有容纳槽34，该容纳槽34的两侧槽壁设置有卡沿35。
如图7、图8所示，本实施例中的连接构件40，包括连接座41和可折叠的连接件，连接件的一端与连接座41连接，另一端与针座10连接。其中，连接件穿过所述容纳槽34，在容纳槽34所在的区间内进行折叠与展开。
其中，所述连接座41位于所述容置腔36的下方并与所述底座30旋转活动连接。优选的，所述连接座41的两端设置有销轴43，对应的，如图11、图12所示，所述底座30的容置腔36的内壁设置有与所述销轴43适配的销孔37。
本实施例的连接件，包括两个连接杆45，为了实现折叠与展开，所述针座10与连接杆45之间、相邻连接杆45之间以及连接杆45与连接座41之间设置有易弯部46，连接件在该易弯部46形变，实现折叠与展开的状态变化。
需要说明的是，上述连接件的结构为本实施例的优选方式，作为等同，折弯部46也可以设置为铰链，连接件也可以为柔性材质，整体可形变。
作为本实施例的特别之处，其中，连接座41上设有容纳纵管22穿过的连接孔42。如图1、图2所示，在连接件处于折叠状态，及安全针组件处于使用状态时，所述纵管22依次穿过引导孔33、容置腔36以及连接孔42，针管20的尖端自底座30的下方伸出。
当该安全针组件使用完成后，将针座10向远离底座30的方向拉伸，直至连接件处于图4-图8所示的展开状态。此状态下，纵管22的尖端从连接孔42中脱离，位于容置腔36中，如图5所示，当纵管的尖端从连接孔42中脱离后，连接件驱使连接座41旋转至连接孔41与纵管22呈交错状态，从而将纵管的尖端限位于容置腔36内，其尖端无法再次进入连接孔41，从而无法再次暴露于底座30的下方，从而实现自动防护针尖的功效，避免医护人员被误刺。
进一步的，为了防止连接座41旋转后复位，特别的在所述连接座41的一侧设置有止回挡边44，对应的，所述容置腔36的一侧设置有用于与所述止回挡边36适配的止回挡臂38。如图5所述，在连接座41旋转后，止回挡边36与止回挡臂38配合，由止回挡臂38阻止连接座41旋转复位，从而保证了针尖防护的可靠性，安全性得到进一步的提升。
作为优选，本实施例中，如图5、图11-图12所示，所述止回挡臂38远离连接座41的一侧设置有间隙39。通常，底座的材质为注塑件，具有一定的形变能力。在设置间隙39后，连接座41旋转的过程中，由止回挡边36作用于止回挡臂38的一侧，驱使止回挡臂38向间隙一侧形变，至止回挡边36越过止回挡臂38的下端后，止回挡臂38复位，与止回挡边36配合，以组织连接座反向旋转。
本实施例中，安全针组件在图1-图3所示的使用状态，为了防止针座10与底座30之间的位置轻易改变，在所述针座10与底座30之间设置有卡接机构，当连接件处于折叠状态时，所述针座10与底座30通过该卡接机构连接在一起。
作为优选，本实施例中的卡接机构如图3、图8所示，包括一对自所述针座10的底部向底座30一侧延伸的卡接臂17，所述卡接臂17的自由端端部向外侧凸出设置有凸部18，其中，一对卡接臂17伸入容纳槽34后，一对凸部18与所述卡沿35配合，从而使针座和底座处于相对位置固定的状态。
在安全针组件使用完成，将针座向远离底座的一侧拉伸时，其拉伸力首先驱使凸部18与卡沿35解除配合，使针座可向远离底座的一侧位移。
作为优选，如图1-图8所示，本实施例中，所述针座10的两侧设置有翼部，分别为左翼部11和右翼部12，所述的左翼部11和右翼部12与针座之间设置有可弯折部13。如图6所示，当使用者驱使针座向远离底座的一侧运动时，将两个翼部向中间弯折，从而增大了施力的面积，使得操作更为方便。
作为本实施例的优选，如图8所示，其中，所述翼部面向底座30的一侧设置有阻尼部16，当翼部处于如图6所示状态时，阻尼部16可以增大翼部与使用者手指之间的摩擦力，防止出现打滑现象，可以更加省力的、更加方便的将针座向远离底座的一侧移动。
作为本实施例的优选，如图7所示，两个所述翼部之间设置有定位接合结构，分别为设置于左翼部11上的定位接合凸起14和设置于右翼部12上的定位接合槽15,定位接合凸起和定位接合槽的位置对应，可在两个翼部向中间弯折后，通过定位接合凸起和定位接合槽的配合，使两个翼部构成一个整体。
总之，以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。
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Claims (10)

  1. 一种安全针组件，至少包括：
    针座（10）；
    针管（20），所述针管弯折形成横管（21）和纵管（22），所述横管与针座固定连接；
    底座（30），所述底座面向针座的一侧设置有容纳纵管通过的引导孔（33），所述引导孔（33）的下方设置有容置腔（36）；
    其特征在于，还包括连接构件（40），所述连接构件包括连接座（41）和可折叠的连接件，所述连接座位于所述容置腔的下方并与所述底座旋转活动连接，所述连接件的一端与连接座连接，另一端与针座连接；所述连接座上设置有容纳所述纵管穿过的连接孔（42）；
    所述连接件包括折叠状态和展开状态，在折叠状态，所述纵管依次穿过引导孔、容置腔以及连接孔；在展开状态，所述纵管的尖端位于容置腔内，所述连接座旋转至连接孔与纵管呈交错状态。
  2. 按照权利要求1所述的安全针组件，其特征在于，所述连接座的一侧设置有止回挡边（44），所述容置腔的一侧设置有用于与所述止回挡边适配的止回挡臂（38）。
  3. 按照权利要求2所述的安全针组件，其特征在于，所述止回挡臂远离连接座的一侧设置有间隙（39）。
  4. 按照权利要求1所述的安全针组件，其特征在于，所述连接件包括至少两个连接杆（45），所述针座与连接杆之间、相邻连接杆之间以及连接杆与连接座之间设置有易弯部（46）。
  5. 按照权利要求1所述的安全针组件，其特征在于，所述连接座的两端设置有销轴（43），所述底座的容置腔内壁设置有与所述销轴适配的销孔（37）。
  6. 按照权利要求1所述的安全针组件，其特征在于，所述针座与底座之间设置有卡接机构，所述连接件处于折叠状态时，所述针座与底座通过所述卡接机构连接在一起。
  7. 按照权利要求6所述的安全针组件，其特征在于，所述卡接机构包括：
    一对自所述针座的底部向底座一侧延伸的卡接臂（17）；
    自所述卡接臂的自由端端部向外侧凸出的凸部（18）；
    设置于所述底座上面向针座一侧的容纳槽（34），所述容纳槽的两侧槽壁设置有用于与所述凸部适配的卡沿（35）。
  8. 按照权利要求1-7任一项所述的安全针组件，其特征在于，所述针座的两侧设置有翼部。
  9. 按照权利要求8所述的安全针组件，其特征在于，所述翼部与针座之间设置有可弯折部（13），所述翼部面向底座的一侧设置有阻尼部（16）。
  10. 按照权利要求9所述的安全针组件，其特征在于，两个所述翼部之间设置有定位接合结构，包括相互适配的定位接合凸起和定位接合槽。
PCT/CN2023/080209 2022-07-29 2023-03-08 一种安全针组件 WO2024021614A1 (zh)

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US20050107749A1 (en) * 2003-11-13 2005-05-19 Smith Daniel K. Safety shield for medical needles
CN101432035A (zh) * 2006-04-28 2009-05-13 尼普洛株式会社 安全针组件
CN205360137U (zh) * 2014-12-04 2016-07-06 住友电木株式会社 医疗用针
CN208974827U (zh) * 2018-06-01 2019-06-14 阳普医疗（湖南）有限公司 专用针结构
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