WO2023284843A1 - 一次性使用低残留防针刺注射器 - Google Patents

一次性使用低残留防针刺注射器 Download PDF

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Publication number
WO2023284843A1
WO2023284843A1 PCT/CN2022/105840 CN2022105840W WO2023284843A1 WO 2023284843 A1 WO2023284843 A1 WO 2023284843A1 CN 2022105840 W CN2022105840 W CN 2022105840W WO 2023284843 A1 WO2023284843 A1 WO 2023284843A1
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WIPO (PCT)
Prior art keywords
protective sleeve
residue
needle
buckle
protective cover
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PCT/CN2022/105840
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English (en)
French (fr)
Inventor
张洪杰
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贝普医疗科技股份有限公司
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Publication of WO2023284843A1 publication Critical patent/WO2023284843A1/zh

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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
    • 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
    • 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
    • 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
    • A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards

Definitions

  • the invention relates to the technical field of syringes, in particular to a disposable low-residue anti-needle-puncture syringe.
  • China's authorized patent No. is CN211634668U, which discloses a safety syringe with a sliding sleeve.
  • it does not improve the problem of low liquid medicine residue, and its design is relatively complicated to operate during use.
  • the sliding sleeve must be pulled out and then rotated at a certain angle. It is necessary to confirm whether the sliding sleeve is stuck before discarding it. , this complex operation affects the work efficiency of medical staff.
  • the safety insulin syringe protection sleeve disclosed in Chinese Patent No. CN103191492A seems to have a simple structure and is easy to operate, but in fact it cannot be assembled in actual production, and the structure only exists in theory.
  • the object of the present invention is to provide a single-use low-residue needle-stick-proof syringe.
  • Disposable anti-needle syringe with low residue comprising a jacket, a needle cap and a protective cover
  • the protective cover is sleeved on the outside of the jacket, characterized in that the jacket includes a needle seat and a cylinder connected in the axial direction, the The upper end of the barrel is provided with a side skirt that is turned outward, and the upper end of the protective sleeve is provided with a limit step that is turned inward.
  • the side skirt is engaged with the limit step, and the lower end surface of the needle cap is connected
  • the upper end faces of the steps are against each other, the center of the lower end of the needle seat is provided with a concave platform, and the lower part of the protective cover is provided with a buckle. When an upward force is applied to the protective cover in the axial direction, the buckle moves down Hold the upper end of the side skirt.
  • the buckle is bent and deformed inwardly to press the upper end surface of the side skirt.
  • the inner wall of the upper part of the protective sleeve is provided with several convex points in the circumferential direction, and the convex points and the lower end of the side skirt are mutually limited. Click Release to allow the protective cover to continue moving up.
  • the buckles are arranged radially and symmetrically on both sides of the protective cover.
  • the inner wall of the lower part of the protective cover is provided with two limiting bosses, the limiting bosses are located in the gap between the two buckles, the upper end of the limiting boss is higher than the lower end of the buckle, and the When the protective sleeve exerts an upward force in the axial direction, the limiting boss abuts against the lower end of the side skirt to limit the upward movement range of the protective sleeve.
  • the needle seat includes an inner seat and an outer ring, and there is a distance between the inner seat and the outer ring, and the bottom ends of the inner seat and the outer ring are connected by an annular base.
  • the upper part of the outer ring is inclined, and the outer diameter of the upper part of the outer ring gradually increases from top to bottom.
  • the inner wall of the lower end of the needle cap is provided with a ring rib, and the inner wall of the needle cap is in interference fit with the outer wall of the outer ring.
  • a ring is protruded from the outer wall of the protective sleeve.
  • the low residue design of the concave platform in the protective cover of the present invention makes the residual amount of the product after the injection is small, less than 0.005ml; the buckle structure and the limit structure design of the limit step make the product anti-acupuncture It is easy to trigger, but hard to destroy, and the more it is destroyed, the tighter the effect.
  • Fig. 1 is a schematic diagram of the assembly of the overall structure of the present invention
  • Fig. 2 is the dismantling schematic diagram of the overall structure of the present invention.
  • Fig. 3 is a sectional view when the outer skirt of the present invention is not processed
  • Fig. 4 is the cross-sectional view of the outer skirt of the present invention after processing
  • Fig. 5 is a view of one side of the protective sleeve of the present invention when the limit step is not processed;
  • Fig. 6 is a cross-sectional view of one side of the protective sleeve of the present invention when the limit step is not processed;
  • Fig. 7 is a view of the other side when the protective sleeve of the present invention is not processed with a limit step;
  • Fig. 8 is a cross-sectional view of the other side of the protective sleeve of the present invention when the limit step is not processed;
  • Fig. 9 is a view of the rear side of the protective cover processing limit step of the present invention.
  • Fig. 10 is a cross-sectional view of the rear side of the protective sleeve of the present invention to process the limit step;
  • Fig. 11 is a view of the other side after the limit step of the protective sleeve of the present invention is processed;
  • Fig. 12 is a cross-sectional view of the other side of the protective sleeve of the present invention after processing the limit step;
  • Fig. 13 is a sectional view of the first state of the combination of the coat and the protective cap of the present invention.
  • Fig. 14 is a sectional view of the second state of the combination of the coat and the protective cap of the present invention.
  • Fig. 15 is the sectional view of the third state of the combination of the coat and the protective cap of the present invention.
  • Fig. 16 is a cross-sectional view of the fourth state of the combination of the coat and the protective cap of the present invention.
  • Figure 17 is a sectional view of the overall initial state of the present invention.
  • Figure 18 is a sectional view of the needle cap of the present invention.
  • Fig. 19 is an initial state diagram of the self-destruction operation of the coat and the protective cap of the present invention.
  • Fig. 20 is the final state diagram of the self-destruction operation of the coat and the protective cap of the present invention.
  • Figure 21 is a schematic diagram of the disassembly structure of the combination of the present invention and the snap ring;
  • Fig. 22 is a schematic structural view of the buckle film of the present invention.
  • Fig. 23 is a schematic bottom view of the clasp film of the present invention.
  • the invention discloses a one-time low-residue anti-acupuncture syringe.
  • the upper end of the barrel 11 is provided with a side skirt 12 that is turned outward
  • the upper end of the protective cover 3 is provided with a limit step 33 that is turned inward
  • the side skirt 12 is snapped to the limit step 33
  • the lower end surface of the needle cap 2 is offset against the upper end surface of the limiting step 33
  • the turning over of the outer skirt 12 and the turning over of the limiting step 33 all come from the thermoforming process in the assembly process.
  • the center of the lower end of the needle seat 16 is provided with a recessed platform 14, which can reduce the residue of medicine after injection.
  • the lower part of the protective cover 3 is provided with a buckle 31. After the injection is completed, the protective cover 3 is applied in the axial direction. When the force is lowered, the buckle 31 moves down against the upper end surface of the side skirt 12, triggering the safety device, that is, when the protective cover 3 is continuously applied with an axially downward force, the buckle 31 is bent and deformed inwardly to compress
  • buckles 31 are arranged radially and symmetrically on both sides of the protective cover 3 .
  • the inner wall of the upper part of the protective cover 3 is provided with several convex points 34 along the circumference, and the convex points 34 and the lower end of the side skirt 12 are mutually limited. To allow the protective cover 3 to continue to move up.
  • the inner wall of the bottom of the protective cover 3 is provided with two spacer bosses 32, the spacer bosses 32 are located in the gap between the two buckles 31, the distance between the upper end of the spacer bosses 32 and the lower end of the buckle 31 is from After the limit gap is destroyed, when an upward force is applied to the protective cover 3, the limit boss 32 will abut against the lower end of the side skirt 12 to limit the range of the upward movement of the protective cover 3.
  • the needle base 16 includes an inner seat 15 and an outer ring 13. There is a distance between the inner seat 15 and the outer ring 13. The bottom ends of the inner seat 15 and the outer ring 13 are connected by an annular base. The upper part of the outer ring 13 is inclined, and the outer ring 13 The outer diameter of the upper part increases gradually from top to bottom.
  • the inner wall of the lower end of the needle cap 2 is provided with a ring rib 21, the inner wall of the needle cap 2 is in interference fit with the outer wall of the outer ring 13, and the outer wall of the protective cover 3 is protrudingly provided with a ring 35, the ring 35 is convenient for tooling assembly and anti-slip when used by medical personnel.
  • the downward movement range of the needle cap 2 is limited by the upper edge of the limit step 33, and the inner diameter of the needle cap 2 is only interference fit with the outer ring 13 of the needle hub 16.
  • the side skirt 12 of the present invention is a protruding ring protruding from the upper edge of the cylinder body 11 in its initial state.
  • the protruding ring is in an everted state after thermoforming , the side skirt 12 is in the initial state and the limit step 33 after thermoforming is mutually limited;
  • the boss 32 forms a limit, and the upper part of the outer ring 13 of the needle seat 16 is a slope, so when the self-destruct state is applied to the protective cover 3 in an upward force along the axial direction, the buckle 31 will move toward the needle seat 16 along the direction of the slope.
  • the center of the clamp is tightened to protect the needle tube from exposure.
  • the skirt 12 is directly injection molded.
  • the upper end of the sheath is initially a circular ring extending from the top of the sheath, and the ring is bent inward after thermoforming to form a limiting step 33 .
  • the initial state of the product it is mutually limited with the side skirt 12 after thermoforming, and the lower limit position of the protective cover 3 is limited to the position shown in Figure 16, and the inner diameter of the limit step 33 fits with the outer ring 13, effectively controlling the The product is in the initial state (as shown in FIG. 17 ) radial shaking of the protective cover 3 .
  • the limiting step 33 is directly injection molded.
  • the protective cover 3 and the jacket 1 are first assembled to the position shown in A, and then the side skirt 12 is thermoformed, as shown in Figure 14;
  • the protective cover 3 is moved to the position shown in FIG. The position is limited, and the buckle 31 clamps the barrel 11, so that the protective cover 3 is not easy to slide in the axial direction of the barrel 11.
  • a snap ring 4 is provided inside the protective sleeve 3, and the snap ring 4 and the thermoformed limit step 33 are mutually limited, and the protective sleeve 3 is self-destructed in the axial direction.
  • the upper end of the snap ring 4 forms a limit with the buckle 31
  • the lower end of the snap ring 4 forms a limit with the limit boss 32 .
  • a pair of rectangular hollows are provided on both sides of the protective cover 3, and the buckle 31 is connected with the upper and lower ends of the rectangular hollow, and the left and right sides of the buckle 31 are provided with strips.
  • Buckle film 36, the buckle film 36 extends in the left and right direction and exceeds the edges of the left and right sides of the buckle 31, so as to prevent the buckle 31 from turning inward, and when a destructive force is applied to the protective cover 3 in the axial direction, the buckle The buckle 31 will receive the tension of the buckle film 37, and the buckle film 37 increases the strength of the buckle 31 to ensure the reliability of anti-acupuncture.

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

Abstract

本发明提供了一次性使用低残留防针刺注射器，包括外套、针帽和保护套，所述保护套套接于外套的外侧，其特征在于，所述外套包括沿轴向连接的针座和筒体，所述筒体上端设有朝外侧翻折的边裙，所述保护套上端设有朝内侧翻折的限位台阶，所述边裙与限位台阶卡接，所述针座下端的中心设有凹台，所述保护套的下部设有卡扣，对所述保护套施加沿轴向向下的力时，所述卡扣下移抵住边裙的上端面；本发明保护套中凹台的低残留设计，使得产品在注射完成后药液的残留量小；卡扣的结构与限位台阶的限位结构设计，使得产品达到防针刺易触发，但难破坏，且越破坏越紧的效果。

Description

一次性使用低残留防针刺注射器 技术领域
本发明涉及注射器技术领域，尤其涉及一次性使用低残留防针刺注射器。
背景技术
目前普通的一次性注射器仍被广泛使用，使用后针管暴露在外，极容易刺伤医护人员和回收人员。而且有些注射器(如胰岛素注射器、疫苗注射器等)本身体积小、对药液的残留量要求高，要开发残留量低且安全的注射器面临着不小的挑战。
中国授权专利号为CN211634668U其公开了一种滑套式的安全注射器，其设计不影响胰岛素注射器、针的正常工作，且能将用后的外露针头收缩进滑套内腔锁死，不会造成安全隐患，制作成本低。然而其并未改善药液残留量低的问题，而且其设计在使用过程中操作相对复杂，在注射完毕后要将滑套向上拔出后再旋转一定角度，需确认滑套是否卡死才能丢弃，该复杂的操作影响了医护人员的工作效率。在中国专利号为CN103191492A中公开的安全胰岛素注射器保护套看似结构简单、操作简便，实则在实际生产中无法实现对其结构的装配，该结构只存在于理论中。
发明内容
本发明的目的是提供一次性使用低残留防针刺注射器。
为了实现上述目的，本发明的技术方案是：
一次性使用低残留防针刺注射器，包括外套、针帽和保护套，所述保护套套接于外套的外侧，其特征在于，所述外套包括沿轴向连接的针座和筒体，所述筒体上端设有朝外侧翻折的边裙，所述保护套上端设有朝内侧翻折的限位台阶，所述边裙与限位台阶卡接，所述针帽的下端面与限位台阶的上端面相抵，所述针座下端的中心设有凹台，所述保护套的下部设有卡扣，对所述保护套施加沿轴向向上的力时，所述卡扣下移抵住边裙的上端面。
进一步地，对所述保护套持续施加沿轴向向下的力时，所述卡扣朝内侧折弯变形以压紧边裙的上端面。
进一步地，所述保护套上部的内壁沿周向设有若干凸点，所述凸点与边裙的下端相互限位，对所述保护套施加沿轴向向上的力时，所述边裙与凸点解除 限位以允许保护套继续上移。
进一步地，所述卡扣沿径向对称设置于保护套的两侧。
进一步地，所述保护套下部的内壁设有两个限位凸台，所述限位凸台位于两个卡扣的间隙中，所述限位凸台的上端高于卡扣的下端，对所述保护套施加沿轴向向上的力时，所述限位凸台抵住边裙的下端以限位保护套向上移动的范围。
进一步地，所述针座包括内座和外圈，所述内座和外圈存在间距，所述内座和外圈的底端通过环形的底座连接。
进一步地，所述外圈的上部呈斜面状，所述外圈上部的外径由上至下逐渐增大。
进一步地，所述针帽下端的内壁设有环筋，所述针帽的内壁与外圈的外壁过盈配合。
进一步地，所述保护套的外壁凸出设有环圈。
本发明保护套中凹台的低残留设计，使得产品在注射完成后药液的残留量小，低于0.005ml；卡扣的结构与限位台阶的限位结构设计，使得产品达到防针刺易触发，但难破坏，且越破坏越紧的效果。
附图说明
图1为本发明的整体结构组装示意图；
图2为本发明的整体结构拆解示意图；
图3为本发明外套未加工边裙时的剖视图；
图4为本发明外套加工边裙后的剖视图；
图5为本发明保护套未加工限位台阶时一侧的视图；
图6为本发明保护套未加工限位台阶时一侧的剖视图；
图7为本发明保护套未加工限位台阶时另一侧的视图；
图8为本发明保护套未加工限位台阶时另一侧的剖视图；
图9为本发明保护套加工限位台阶后一侧的视图；
图10为本发明保护套加工限位台阶后一侧的剖视图；
图11为本发明保护套加工限位台阶后另一侧的视图；
图12为本发明保护套加工限位台阶后另一侧的剖视图；
图13为本发明外套和保护帽相结合的第一状态剖视图；
图14为本发明外套和保护帽相结合的第二状态剖视图；
图15为本发明外套和保护帽相结合的第三状态剖视图；
图16为本发明外套和保护帽相结合的第四状态剖视图；
图17为本发明整体的初始状态剖视图；
图18为本发明针帽的剖视图；
图19为本发明外套和保护帽自毁操作的初始状态图；
图20为本发明外套和保护帽自毁操作的最终状态图；
图21为本发明和卡环组合的拆解结构示意图；
图22为本发明卡扣薄膜的结构示意图；
图23为本发明卡扣薄膜的仰视结构示意图。
附图标记：
1外套、
11筒体、12边裙、13外圈、14凹台、15内座、16针座、
2针帽、21环筋、
3保护套、31卡扣、32限位凸台、33限位台阶、
34凸点、35环圈、36卡扣薄膜、
4卡环。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明公开了一次性使用低残留防针刺注射器，如图1所示，包括外套1、针帽2和保护套3，保护套3套接于外套1的外侧，外套1包括沿轴向连接的针座16和筒体11，筒体11上端设有朝外侧翻折的边裙12，保护套3上端设有朝内侧翻折的限位台阶33，边裙12与限位台阶33卡接，针帽2的下端面与限位台阶33的上端面相抵，外边裙12的翻折和限位台阶33的翻折均来自于装配过程中的热成型工艺。
针座16下端的中心设有凹台14，所述凹台14可减少注射过后药的残留， 保护套3的下部设有卡扣31，在注射完成后，对保护套3施加沿轴向向下的力时，卡扣31下移抵住边裙12的上端面，触发安全装置，即对保护套3持续施加沿轴向向下的力时，卡扣31朝内侧折弯变形以压紧边裙12的上端面，优选地，卡扣31沿径向对称设置于保护套3的两侧。
保护套3上部的内壁沿周向设有若干凸点34，凸点34与边裙12的下端相互限位，对保护套3施加沿轴向向上的力时，边裙12与凸点34解除限位以允许保护套3继续上移。
保护套3下部的内壁设有两个限位凸台32，限位凸台32位于两个卡扣31的间隙中，限位凸台32的上端与卡扣31下端之间的间距即为自毁后的限位间隙，对保护套3施加沿轴向向上的力时，限位凸台32抵住边裙12的下端以限位保护套3向上移动的范围。
针座16包括内座15和外圈13，内座15和外圈13存在间距，内座15和外圈13的底端通过环形的底座连接，外圈13的上部呈斜面状，外圈13上部的外径由上至下逐渐增大。
如图18所示，针帽2下端的内壁设有环筋21，针帽2的内壁与外圈13的外壁过盈配合，保护套3的外壁凸出设有环圈35，所述环圈35便于工装装配和医护人员使用时的防滑，针帽2向下的移动范围受限于限位台阶33的上沿，而针帽2的内径仅与针座16的外圈13过盈配合。
在一个实施例中，如图3所示，本发明的边裙12初始状态下为筒体11上缘凸出的凸环，如图4所示，该凸环通过热成型后呈外翻状态，边裙12在初始状态下与热成型后的限位台阶33相互限位，自毁状态下成型的边裙12上缘与卡扣31形成限位，成型后的边裙12下端与限位凸台32形成限位，且针座16的外圈13上部为斜面，因此当自毁状态下，对保护套3施加沿轴向向上的力，卡扣31会沿着斜面方向向针座16的中心越夹越紧，保护针管不暴露。
在另一个实施例中，边裙12直接注塑成型。
在一个实施例中，如图5～12所示，护套上端初始状态下为护套顶部延伸设置的圆环，该圆环热成型后向内弯折形成限位台阶33，限位台阶33在产品初始状态下与热成型后的边裙12相互限位，将保护套3的下限位置限制在图16所示的位置，且限位台阶33的内径与外圈13贴合，有效控制了产品在初始状态 下(如图17所示)保护套3的径向晃动。
在另一个实施例中，限位台阶33直接注塑成型。
如图13所示，先将保护套3与外套1装配至如A所示位置，然后对边裙12进行热成型加工，如图14所示；
将保护套3移至图15所示位置，并对护套上端的圆环进行热成型加工成限位台阶33；
将热成型工艺完成后的保护套3移动至图16所示位置，此时成型的限位台阶33与成型的边裙12上端面相互限位，凸点34与成型的边裙12下端面相互限位，并且卡扣31夹紧筒体11，使得保护套3在筒体11的轴向不易滑动。
如图19和20所示，对保护套3施加沿轴向向上的、一定的自毁力，即可破坏凸点34的限位，当卡扣31的下端面沿轴向向上到达边裙12的上端面时，完成防针刺功能的触发，此时限位凸台32与边裙12相互限位，使保护套3无法继续沿轴向向上移动。
如图21所示，在一个实施例中，保护套3内设有一卡环4，卡环4与热成型后的限位台阶33相互限位，对保护套3施加沿轴向向上的自毁力时，卡环4的上端与卡扣31形成限位，卡环4的下端与限位凸台32形成限位。
如图22和图23所示，在一个实施例中，保护套3两侧设有一对矩形镂空，卡扣31与矩形镂空的上下两端连接，卡扣31的左右两侧设有条状的卡扣薄膜36，卡扣薄膜36沿左右方向相向延伸超过卡扣31左右两侧的边缘，以阻碍卡扣31向内翻折，对保护套3施加沿轴向向下的破坏力时，卡扣31会收到卡扣薄膜37的张力，卡扣薄膜37增加了卡扣31的强度，保证防针刺的可靠性。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (9)

  1. 一次性使用低残留防针刺注射器，包括外套、针帽和保护套，所述保护套套接于外套的外侧，其特征在于，所述外套包括沿轴向连接的针座和筒体，所述筒体上端设有朝外侧翻折的边裙，所述保护套上端设有朝内侧翻折的限位台阶，所述边裙与限位台阶卡接，所述针帽的下端面与限位台阶的上端面相抵，所述针座下端的中心设有凹台，所述保护套的下部设有卡扣，对所述保护套施加沿轴向向上的力时，所述卡扣下移抵住边裙的上端面。
  2. 根据权利要求1所述的一次性使用低残留防针刺注射器，其特征在于，对所述保护套持续施加沿轴向向下的力时，所述卡扣朝内侧折弯变形以压紧边裙的上端面。
  3. 根据权利要求1所述的一次性使用低残留防针刺注射器，其特征在于，所述保护套上部的内壁沿周向设有若干凸点，所述凸点与边裙的下端相互限位，对所述保护套施加沿轴向向上的力时，所述边裙与凸点解除限位以允许保护套继续上移。
  4. 根据权利要求1或2或3所述的一次性使用低残留防针刺注射器，其特征在于，所述卡扣沿径向对称设置于保护套的两侧。
  5. 根据权利要求4所述的一次性使用低残留防针刺注射器，其特征在于，所述保护套下部的内壁设有两个限位凸台，所述限位凸台位于两个卡扣的间隙中，所述限位凸台的上端高于卡扣的下端，对所述保护套施加沿轴向向上的力时，所述限位凸台抵住边裙的下端以限位保护套向上移动的范围。
  6. 根据权利要求1所述的一次性使用低残留防针刺注射器，其特征在于，所述针座包括内座和外圈，所述内座和外圈存在间距，所述内座和外圈的底端通过环形的底座连接。
  7. 根据权利要求6所述的一次性使用低残留防针刺注射器，其特征在于，所述外圈的上部呈斜面状，所述外圈上部的外径由上至下逐渐增大。
  8. 根据权利要求7所述的一次性使用低残留防针刺注射器，其特征在于，所述针帽下端的内壁设有环筋，所述针帽的内壁与外圈的外壁过盈配合。
  9. 根据权利要求1或6或7或8所述的一次性使用低残留防针刺注射器，其特征在于，所述保护套的外壁凸出设有环圈。
PCT/CN2022/105840 2021-07-15 2022-07-14 一次性使用低残留防针刺注射器 WO2023284843A1 (zh)

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CN113398381A (zh) * 2021-07-15 2021-09-17 贝普医疗科技股份有限公司 一次性使用低残留防针刺注射器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312370A (en) * 1988-06-28 1994-05-17 Sherwood Medical Company Combined syringe and needle shield
CN2761196Y (zh) * 2005-01-05 2006-03-01 陈昌慈 注射针防护结构
CN102974009A (zh) * 2012-09-28 2013-03-20 林作钱 针头保护装置和安全针组件
US20130138046A1 (en) * 2011-11-28 2013-05-30 Zhong Feng Safe Self-Destruction Syringe with Puncture Proof Protective Sleeve
CN106215285A (zh) * 2016-08-11 2016-12-14 王淑娟 安全型注射器
CN111888581A (zh) * 2020-09-10 2020-11-06 苏州赛卫生物科技有限公司 带有针头保护装置的安全注射器
CN113398381A (zh) * 2021-07-15 2021-09-17 贝普医疗科技股份有限公司 一次性使用低残留防针刺注射器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312370A (en) * 1988-06-28 1994-05-17 Sherwood Medical Company Combined syringe and needle shield
CN2761196Y (zh) * 2005-01-05 2006-03-01 陈昌慈 注射针防护结构
US20130138046A1 (en) * 2011-11-28 2013-05-30 Zhong Feng Safe Self-Destruction Syringe with Puncture Proof Protective Sleeve
CN102974009A (zh) * 2012-09-28 2013-03-20 林作钱 针头保护装置和安全针组件
CN106215285A (zh) * 2016-08-11 2016-12-14 王淑娟 安全型注射器
CN111888581A (zh) * 2020-09-10 2020-11-06 苏州赛卫生物科技有限公司 带有针头保护装置的安全注射器
CN113398381A (zh) * 2021-07-15 2021-09-17 贝普医疗科技股份有限公司 一次性使用低残留防针刺注射器

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