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CN103957969A - 针安全装置 - Google Patents

针安全装置 Download PDF

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Publication number
CN103957969A
CN103957969A CN201280058200.1A CN201280058200A CN103957969A CN 103957969 A CN103957969 A CN 103957969A CN 201280058200 A CN201280058200 A CN 201280058200A CN 103957969 A CN103957969 A CN 103957969A
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Prior art keywords
needle
needle shield
safety device
axial location
pin
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J.斯莱门
C.沃德
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Sanofi Aventis Deutschland GmbH
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Sanofi Aventis Deutschland GmbH
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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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3257—Semi-automatic sleeve extension, i.e. in which triggering of the sleeve extension requires a deliberate action by the user, e.g. manual release of spring-biased extension means
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3261—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between sleeve and syringe barrel, e.g. spreading of sleeve retaining hooks having slanted surfaces by engagement with conically shaped collet of the piston rod during the last portion of the injection stroke of the plunger
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
    • A61M2005/3261—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between sleeve and syringe barrel, e.g. spreading of sleeve retaining hooks having slanted surfaces by engagement with conically shaped collet of the piston rod during the last portion of the injection stroke of the plunger
    • A61M2005/3263—Trigger provided at the distal end, i.e. syringe end for mounting a needle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/04—Force
    • F04C2270/042—Force radial
    • F04C2270/0421—Controlled or regulated

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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)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

描述了一种针安全装置(2)，其包括：针座(2.2)；针(2.3)，联接到针座(2.2)并具有远端尖端(2.3.1)；针护罩(2.1)，可伸缩地联接到针座(2.2)，针护罩(2.1)；锁定元件(2.4)，包括适于与针座(2.2)接合的闩锁臂(2.4.2)和适于与针护罩(2.1)接合的接合元件(2.4.3)。当针护罩(2.1)相对于针座(2.2)处于第一轴向位置(PA1)时，针护罩(2.1)覆盖针(2.3)的远端尖端(2.3.1)，并且锁定元件(2.4)的接合元件(2.4.3)与针护罩(2.1)接合。当针护罩(2.1)相对于针座(2.2)处于第二轴向位置(PA2)时，针护罩(2.1)缩回以露出针(2.3)的远端尖端(2.3.1)，并且闩锁臂(2.4.2)与针座(2.2)接合。当针护罩(2.1)相对于针座(2.2)处于第三轴向位置(PA3)时，针护罩(2.1)覆盖针(2.3)的远端尖端(2.3.1)，并且接合元件(2.4.3)抵接针护罩(2.1)以防止针护罩(2.1)相对于针座(2.2)的近端移动。

Description

针安全装置
技术领域
背景技术
含有选定剂量的药物的药物递送装置(例如，笔注射器、注射器、自动注射器等)是熟知的用于向患者施予药物的装置。用于在使用之前和之后覆盖递送装置的针的安全装置也是熟知的。一般地，安全装置的针护罩用手移动或者自动移动以围绕医用针。已经做出各种尝试来开发最优尺寸和功能的安全装置。然而，仍存在对最优的安全针组件的需要。
发明内容
本发明的目的是提供一种改进的安全针组件，其使意外的针刺伤的风险最小化，操作起来是安全的，并在药物递送之前和之后提供针安全性。
在示例性实施例中，根据本发明的针安全装置包括：针座；联接到针座并具有远端尖端的针；针护罩，可伸缩地联接到针座，针护罩；锁定元件，包括适于与针座接合的闩锁臂和适于与针护罩接合的接合元件。当针护罩相对于针座处于第一轴向位置时，针护罩覆盖针的远端尖端，并且锁定元件的接合元件与针护罩接合。当针护罩相对于针座处于第二轴向位置时，针护罩缩回以露出针的远端尖端，并且闩锁臂与针座接合。当针护罩相对于针座处于第三轴向位置时，针护罩覆盖针的远端尖端，并且接合元件抵接针护罩以防止针护罩相对于针座的近端移动。
在示例性实施例中，针座包括具有凹陷的杆，该凹陷适于接收锁定元件的闩锁臂。针护罩从第一轴向位置向第二轴向位置移动，闩锁臂由杆偏转。当针护罩到达第二轴向位置时，闩锁臂返回至非偏转位置以与凹陷接合。闩锁臂包括适于与凹陷接合的指状物。
在示例性实施例中，针座包括具有径向突出部的轴向臂，径向突出部适于与针护罩上的轴向槽接合。
在示例性实施例中，针护罩包括形成在内表面上的轴向肋。肋包括适于在第一轴向位置与接合元件接合的远端和适于在第三轴向位置抵接接合元件的近端。远端包括倾斜表面，该倾斜表面适于与接合元件的对应的倾斜表面接合。当针护罩从第一轴向位置向第二轴向位置移动时，接合元件由肋偏转。当针护罩到达第三轴向位置时，接合元件返回至非偏转位置以与肋的近端接合。
在示例性实施例中，针安全装置还包括：弹簧，设置在针座与针护罩之间，该弹簧朝着第一轴向位置和第三轴向位置偏压针护罩。弹簧在近端承靠(ground)于针座并在远端承靠于肋的近端。
本发明的进一步适用范围将从下面给出的详细描述中变得明显。然而，应当理解，这些详细描述和具体示例，虽然表示本发明的优选实施例，但是仅作为例子给出，因为从该详细描述出发，本发明的精神和范围内的各种变化和变型对于本领域技术人员将变得明显。
附图说明
从下面给出的详细描述和仅作为例子给出、因此不是对本发明进行限制的附图，本发明将变得更全面地被理解，附图中：
图1示出药物递送装置和针安全装置的示例性实施例的等距视图。
图2示出药物递送装置和针安全装置的示例性实施例的分解图。
图3示出针安全装置在使用之前的示例性实施例的截面图。
图4示出针安全装置在使用期间的示例性实施例的截面图。
图5示出针安全装置在使用之后的示例性实施例的截面图。
在所有附图中，相应的部件用相同的参考符号来标记。
具体实施方式
图1示出联接到药物递送装置1的针安全装置2的示例性实施例的等距视图。在所示的示例性实施例中，递送装置1布置成具有细长的圆柱形壳体1.1的笔注射器。在其它示例性实施例中，递送装置1可以是注射器、牙科注射器、自动注射器或类似的适于递送药物的装置。
图2示出针安全装置2的示例性实施例的分解图。针安全装置2包括针护罩2.1、针座2.2、针2.3、锁定元件2.4和弹簧2.5。
在示例性实施例中，针护罩2.1包括具有第一孔2.1.2的远端面2.1.1，该第一孔2.1.2布置成允许针2.3的远端尖端2.3.1在注射程序期间通过(针2.3的近端尖端2.3.2适于刺穿递送装置1中的药物容器的隔膜)。具有远端2.1.4.1和近端2.1.4.2的一个或多个槽2.4可以形成在针护罩2.1中。针护罩2.1的内表面可包括具有近端2.1.3.2和远端2.1.3.1的一个或多个轴向肋2.1.3。远端2.1.3.1可以径向远离轴线A倾斜，以在针护罩2.1的远端产生凹痕(indent)。针护罩2.1可以是大致圆柱形的形状，并在注射程序期间相对于针座2.2移动。
在示例性实施例中，针座2.2可以(例如，通过螺纹2.2.3、搭扣配合、卡口配合、摩擦配合等)可移除地联接到递送装置1或一体地形成于递送装置1的远端。针座2.2包括沿远端延伸的臂2.2.1。每个臂2.2.1包括适于与针护罩2.1上的其中一个槽2.4接合的径向突出部2.2.1.1。径向突出部2.2.1.1和槽2.4的接合防止了针护罩2.1与针座2.2分离。臂2.2.1可以从针座2.2的圆周轴向(沿平行于针安全装置2的纵向轴线A的轴线)延伸。针座2.2还包括用于保持针2.3的杆。杆可包括布置成例如环状凹痕的凹陷2.2.2。
在示例性实施例中，锁定元件2.4包括中心部2.4.1，带有从中心部2.4.1径向延伸的突起2.4.1.1。在突起2.4.1.1之间可以是空间2.4.1.2。突起2.4.1.1可以布置在针护罩2.1中的肋2.1.3上或肋2.1.3之间。突起2.4.1.1和肋2.1.3的接合可以防止针护罩2.1相对于针座2.2旋转。突起2.4.1.1可包括适于与肋2.1.3的远端凹陷2.1.4.1上的凹痕接合的弹性接合元件2.4.3。接合元件2.4.3可包括用于与凹痕的倾斜表面接合的倾斜表面2.4.3.1。倾斜表面2.4.3.1的相反侧可包括适于抵接肋2.1.3的近端2.1.3.2的抵接表面2.4.3.2。第二孔2.4.4可形成在中心部2.4.1中，与第一孔2.1.2对准。弹性闩锁臂2.4.2可从中心部2.4.1沿近端延伸并适于与针座2.2的杆上的凹陷2.2.2接合。闩锁臂2.4.2可包括具有抵接表面2.4.2.2的指状物2.4.2.1，其中指状物2.4.2.1与凹陷2.2.2接合，并且，一旦接合，抵接表面2.4.2.2就防止锁定元件2.4相对于杆的远端移动。
弹簧2.5可以在近端承靠于针座2.2并在远端承靠于肋2.1.3的近端2.1.3.2。
图3示出针安全装置2在第一轴向位置(PA1)的示例性实施例。在该第一轴向位置(PA1)，针护罩2.1相对于针座2.2伸出，并覆盖针2.3的远端尖端2.3.1。因为接合元件2.4.3与肋2.1.3的远端2.1.3.1接合，所以锁定元件2.4联接到针护罩2.1。在第一轴向位置(PA1)，弹簧2.5可以不经受任何载荷。
图4示出针安全装置2在第二轴向位置(PA2)的示例性实施例。在该第二轴向位置(PA2)，针护罩2.1相对于针座2.2缩回，并且弹簧2.5被压缩，从而使针2.3的远端尖端2.3.1通过第一孔2.1.2和第二孔2.4.4露出。当针安全装置2压靠于注射部位时，近端指向的力使接合元件2.4.3径向偏转并脱离肋2.1.3的远端2.1.3.1。在针安全装置2最初压靠在注射部位上时，接合元件2.4.3与远端2.1.3.1之间的斜面接合可以提供一些阻力。在第二轴向位置(PA2)，锁定元件2.4抵接杆，并且闩锁臂2.4.2与凹陷2.2.2接合。即，指状物2.4.2.1在闩锁臂2.4.2抵接杆时可以偏转，并保持偏转直到指状物2.4.2.1到达凹陷2.2.2(然后返回至非偏转位置)。
图5示出针安全装置2处于第三轴向位置(PA3)的示例性实施例。在该第三轴向位置(PA3)，针护罩2.1相对于针座2.2伸出并覆盖针2.3的远端尖端2.3.1。因为锁定元件2.4的闩锁臂2.4.2在第二轴向位置(PA2)与针座2.2的杆上的凹陷2.2.2接合，因此当弹簧2.5张开时，锁定元件2.4保持联接到杆且接合元件2.4.3保持被肋2.1.3偏转。当针护罩2.1已经相对于针座2.2沿远端移动使得肋2.1.3的近端2.1.3.2绕过接合元件2.4.3时，接合元件2.4.3返回至非偏转位置。在针安全装置2处于第三轴向位置之后，如果针护罩2.1相对于针座2.2沿近端移动，则肋2.1.3的近端2.1.3.2将抵接接合元件2.4.3。因此，在第三轴向位置，针安全装置2是针安全的，因为远端尖端2.3.1将保持由针护罩2.1覆盖。
可移除的膜可以设置在针护罩2.1的远端面2.1.1上，例如用于保持针2.3的无菌状态。
本领域技术人员将理解，在不偏离本发明的完全范围和精神的条件下，可以对这里描述的实施例以及设备、方法和/或系统的各种组成部分进行改变(添加和/或去除)，而本发明的完全范围和精神包括这些改变及其任何和全部等同物。

Claims (13)

1.一种针安全装置(2)，包括：
针座(2.2)；
针(2.3)，联接到针座(2.2)，针(2.3)具有远端尖端(2.3.1)；
针护罩(2.1)，可伸缩地联接到针座(2.2)，针护罩(2.1)；和
锁定元件(2.4)，包括适于与针座(2.2)接合的闩锁臂(2.4.2)和适于与针护罩(2.1)接合的接合元件(2.4.3)，
其中，当针护罩(2.1)相对于针座(2.2)处于第一轴向位置(PA1)时，针护罩(2.1)覆盖针(2.3)的远端尖端(2.3.1)，并且锁定元件(2.4)的接合元件(2.4.3)与针护罩(2.1)接合，
其中，当针护罩(2.1)相对于针座(2.2)处于第二轴向位置(PA2)时，针护罩(2.1)缩回以露出针(2.3)的远端尖端(2.3.1)，并且闩锁臂(2.4.2)与针座(2.2)接合，并且
其中，当针护罩(2.1)相对于针座(2.2)处于第三轴向位置(PA3)时，针护罩(2.1)覆盖针(2.3)的远端尖端(2.3.1)，并且接合元件(2.4.3)抵接针护罩(2.1)以防止针护罩(2.1)相对于针座(2.2)的近端移动。
2.根据权利要求1的针安全装置(2)，其中，针座(2.2)包括具有凹陷(2.2.2)的杆，该凹陷(2.2.2)适于接收锁定元件(2.4)的闩锁臂(2.4.2)。
3.根据权利要求2的针安全装置(2)，其中，当针护罩(2.1)从第一轴向位置(PA1)向第二轴向位置(PA2)移动时，闩锁臂(2.4.2)由杆偏转。
4.根据权利要求3的针安全装置(2)，其中，当针护罩(2.1)到达第二轴向位置(PA3)时，闩锁臂(2.4.2)返回至非偏转位置以与凹陷(2.2.2)接合。
5.根据权利要求1、2或3的针安全装置(2)，其中，闩锁臂(2.4.2)包括适于与凹陷(2.2.2)接合的指状物(2.4.2.1)。
6.根据前述权利要求中任一项的针安全装置(2)，其中，针座(2.2)包括具有径向突出部(2.2.1.1)的轴向臂(2.2.1)，所述径向突出部(2.2.1.1)适于与针护罩(2.1)上的轴向槽(2.1.4)接合。
7.根据前述权利要求中任一项的针安全装置(2)，其中，针护罩(2.1)包括形成在内表面上的轴向肋(2.1.3)。
8.根据权利要求7的针安全装置(2)，其中，肋(2.1.3)包括适于在第一轴向位置(PA1)与接合元件(2.4.3)接合的远端(2.1.3.1)和适于在第三轴向位置(PA3)抵接接合元件(2.1.3)的近端(2.1.3.2)。
9.根据权利要求8的针安全装置(2)，其中，远端(2.1.3.1)包括倾斜表面，该倾斜表面适于与接合元件(2.4.3)的对应的倾斜表面(2.4.3.1)接合。
10.根据权利要求7、8或9的针安全装置(2)，其中，当针护罩(2.1)从第一轴向位置(PA1)向第二轴向位置(PA2)移动时，接合元件(2.4.3)由肋(2.1.3)偏转。
11.根据权利要求8和10的针安全装置(2)，其中，当针护罩(2.1)到达第三轴向位置(PA3)时，接合元件(2.4.3)返回至非偏转位置以与肋(2.1.3)的近端(2.1.3.2)接合。
12.根据前述权利要求中任一项的针安全装置(2)，还包括：
弹簧(2.5)，设置在针座(2.2)与针护罩(2.1)之间，该弹簧(2.5)朝着第一轴向位置(PA1)和第三轴向位置(PA3)偏压针护罩(2.1)。
13.根据权利要求8和12的针安全装置(2)，其中，弹簧(2.5)在近端承靠于针座(2.2)并在远端承靠于肋(2.1.3)的近端(2.1.3.2)。
CN201280058200.1A 2011-10-06 2012-10-04 针安全装置 Pending CN103957969A (zh)

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