CN102395396A - 笔式针和针帽组件 - Google Patents

笔式针和针帽组件 Download PDF

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CN102395396A
CN102395396A CN201080016877XA CN201080016877A CN102395396A CN 102395396 A CN102395396 A CN 102395396A CN 201080016877X A CN201080016877X A CN 201080016877XA CN 201080016877 A CN201080016877 A CN 201080016877A CN 102395396 A CN102395396 A CN 102395396A
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pin
pen needles
cap
clamping
torque
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杰里米·马歇尔
杰西卡·罗布森
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Owen Mumford Ltd
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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
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • 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
    • 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
    • A61M5/3293—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 characterised by features of the needle hub
    • 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
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
    • A61M2205/586—Ergonomic details therefor, e.g. specific ergonomics for left or right-handed users
    • 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
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (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

本发明公开一种笔式针或笔式针帽组件，被设置例如通过拧到注射装置上而被手动连接，并且设置有夹持区域，该夹持区域被设计为允许在拧紧感觉中能够施加的转矩小于在松开感觉中能够施加的转矩。

Description

笔式针和针帽组件
技术领域
本发明涉及一种针帽组件，包括笔式针和可移动针帽，以及涉及笔式针本身。
背景技术
诸如胰岛素依赖型糖尿病的多种医疗条件要求用户准备自动注射装置，其包含拧到装置的前端上的药筒或者单用途笔式针药筒。在注射完成时，通过旋松移除笔式针。笔式针通常包括具有内螺纹的模制塑料毂和双端针，双端针具有被设计为穿透药筒的端部中的隔膜的朝向后的后端和用于穿透用户的肌肉的前端。为了减少刺痛感觉，并且使注射操作尽可能舒适，针是很细的规格。此外，模制塑料轮毂相当坚固，但不应该胡乱操作。在典型的传统布置中，笔式针设置在针帽中，针帽由箔封条密封，箔封条在提供笔式针到装置或药筒的螺纹端之前剥落。针帽作为扳手动作以允许笔式针在针的前部没有暴露的情况下拧紧和在使用后拧开。该帽设置有多个径向地向外延伸的肋骨，并且我们已经发现，用户有可能过度拧紧，对毂和/或针有潜在损害。同样，如果笔式针过度拧紧，可以证明难以移除，特别是如果自从上次使用之后针毂已经被遗弃。这具有潜在危险，因为用户可能会倾向使用过多的作用力和/或不适当的工具以移除笔式针，从而将自己暴露于针刺伤害的危险。
发明内容
因此，一方面，本发明提供用于注射装置的针帽组件，针帽组件包括：
具有内部孔的笔式针，用于与注射装置或相关组件能够转动地接合，并且具有向前突出的针；和
能够从所述笔式针上移除的针帽，
笔式针和针帽具有互补的驱动表面，以允许针帽的转动传递到所述笔式针，
其中所述针帽设置有外部差动转矩传递区域。
优选地，所述传递区域是夹持区域，该夹持区域被设计为当得被手动夹持时在手动夹持滑动之前能够被施加以拧紧针帽(和因而笔式针)的转矩小于能够被施加以松开针帽的转矩。
这个布置的多个优点之一在于，通常通过用户的手指施加转动动作，用户将通过感觉拧紧组件，并且因而，施加的转矩由适应针的病人来控制。这是特别有益的，因为相同针头将应用于许多不同厂商的装置，并且虽然对螺纹形式具有宽泛的规格，但螺纹轮廓将根据形成法和特定材料而变化，并且因而，因此由于不同装置的摩擦值不同，用于将笔式针充分地拧到位(准确剂量传送所要求的)所需要的转矩将存在不同。
优选地，所述夹持区域包括在针帽周围有角度地隔开的多个肋骨，每个肋骨具有朝向松动方向的大致平滑的、摩擦力相对低的低摩擦表面。每个肋骨上的低摩擦表面可以是弯曲的。有利地，一些或者全部所述肋骨具有朝向拧紧方向的摩擦力相对高的高摩擦表面。所述摩擦力相对高的高摩擦面可以大致径向地延伸，并且可以是平坦的或者有织纹，例如有凹槽或成波纹状。有利地，所述针帽包括与具有缩径尖端的大致截头圆锥形部分结合的大致圆筒形基部，所述大致截头圆锥形部分与缩径尖端结合，并且肋骨至少设置在截头圆锥形部分上。截头圆锥形部分可以是朝向旋转轴线倾斜的线的回转表面。该线可以是直的，或者更优选地是弯曲的。
另一方面，提供一种笔式针，用于在使用中能够转动地与注射装置或相关部件接合，并且具有向前突出的针，其中，所述笔式针包括外部差动转矩传递区域。
优选地，所述传递区域是夹持区域，夹持区域被设计为得当被手动夹持时，在手动夹持滑动之前能够被施加以拧紧笔式针的转矩小于能够被施加以松开笔式针的转矩。
笔式针可以设置有一个或多个以上提出的特征。
虽然已经如上文所述说明本发明，但其扩展到在上文或在如下说明书或权利要求中提出的特征的任何创造性结合。
附图说明
本发明可以以各种方式进行，并且仅以示例的方式，现在将参照附图说明其中两个实施例，在附图中：
图1是笔型自动注射装置的分解图，装载有药筒(cartridge)，药筒容纳通过单用途笔式针传送的几剂药剂；
图2是笔式针的大致透视图；
图3是穿过根据本发明的笔帽的实施例的纵向剖视图；
图4是笔帽的后端视图；
图5是显示差动摩擦(differential friction)肋骨的大致透视图；
图6是通过图3线VI-VI获得的帽的剖视图；
图7显示本发明的使用中的实施例，和
图8是具有差动摩擦结构的针尖端的实施例的大致透视图。
具体实施方式
首先参照图1，自动注射器包括笔体10，笔体10包含驱动机构(未显示)，当通过按下释放按钮16释放驱动机械时，驱动机构轴向地推进内部柱塞12由通过剂量选择器14拨入的剂量确定的量。多剂量药筒18可以轴向地装载在药筒支架中，药筒支架然后拧在笔体(pen body)上。在药筒支架的前端处是螺纹部22，具有双端针的笔式针24可以拧在该螺纹部上。针的后端向后突出，并且在针拧到位时，穿透药筒的前端中的隔膜。如在图2中更特别显示，笔式针24包括模制塑料环，具有内螺纹(未显示)，该内螺纹可以被拧在药筒支架的螺纹部22上，并且具有外部花键26。
参照图3至6，在无菌条件下将笔式针24提供在笔帽28内。笔帽28具有开口端30，开口端30限定圆筒形凹槽，该凹槽具有向内指向的肋骨32，肋骨32被设计为在笔式针上的花键26之间滑动，以使施加到笔帽的转矩被传送到笔式针。笔帽可以通过施加在围绕端部30的后部周边法兰上的箔密封或类似物气密地密封。笔帽向前地聚合在截头圆锥形夹持部34中，夹持部34具有大致弯曲的侧面并终止在封闭的大致圆筒形尖端部36中。
在外部上，截头圆锥形夹持部设置有一系列有角度地隔开的肋骨36，肋骨36被设计为使得在滑动之前通过手动夹持可以传递到针帽的在拧紧方向上(图5中所示的顺时针方向)的转矩量比在松动方向上的转矩量小。如在图5和6中可以更具体地看出，肋骨具有平滑弯曲侧面38，侧面38以相对小的倾角朝向松动方向，而朝向拧紧方向的侧面40是陡峭的并成波纹状或具有波纹。通过这种方式，针在其内部的针帽被应用于药筒支架并且被拧紧时，针帽限制可施加的拧紧转矩的量，并且还确保在被手动夹持时，在松动方向上可传递的转矩量比在拧紧方向上可传递的转矩量大。
在上面的实施例中，笔帽设置有一系列有角度地隔开的肋骨36以在相反顺序中提供差动摩擦(differential friction)特性。在可替换的布置中，如在图8中所示，笔帽50可以设置有类似的有角度地隔开的肋骨52，肋骨52在侧面54上是平滑的轮廓并且在另一侧面56上是陡峭的轮廓，以提供类似的差动摩擦特性。

Claims (8)

1.一种用于注射装置(10-22)的针帽组件，所述针帽组件包括：
笔式针(24)，用于可转动地接合注射装置或相关部件，并且具有向前突出的针，
针帽(28)，与笔式针(24)可拆卸地接合，其中针帽(28)隐藏所述向前突出的针，
针笔(24)和针帽(28)具有互补的驱动表面，以允许将针帽的转动传递到所述笔式针，
其特征在于，所述针帽(28)设置有夹持区域，夹持区域被设计为使得在被手动夹持时，在手动夹持滑动之前能够被施加以拧紧笔式针的转矩小于能够被施加以松开笔式针的转矩。
2.根据权利要求1所述的针帽组件，其中，所述夹持区域包括在针帽(28)周围有角度地隔开的多个肋骨(36)，每个肋骨具有朝向松动方向的大致平滑的、摩擦力相对低的低摩擦表面(38)。
3.根据权利要求2所述的针帽组件，其中，每个肋骨(36)上的低摩擦表面(38)是弯曲的。
4.根据权利要求2或3所述的针帽组件，其中，所述肋骨(36)中的每一个在朝向拧紧方向上具有摩擦力相对高的高摩擦表面(40)。
5.根据权利要求4所述的针帽组件，其中，所述摩擦力相对高的高摩擦面(40)大致径向地延伸。
6.根据权利要求2至4任何一项所述的针帽组件，其中，所述摩擦力相对高的高摩擦面(40)具有凹槽或成波纹状。
7.根据上述任何一项权利要求所述的针帽组件，其中，所述针帽包括大致圆筒形基部(30)，所述大致圆筒形基部(30)与大致截头圆锥形部分(34)结合，所述大致截头圆锥形部分(34)与缩径尖端部(36)结合，并且肋骨(38)至少设置在所述截头圆锥形部分上。
8.一种笔式针(28)，用于在使用中能够转动地与注射装置或相关部件接合，并且具有向前突出的针，其特征在于，
所述笔式针包括夹持区域(34)，该夹持区域被设计为使得在被手动夹持时，在手动夹持滑动之前能够被施加以拧紧笔式针的转矩小于能够被施加以松开笔式针的转矩。
CN201080016877XA 2009-04-17 2010-04-19 笔式针和针帽组件 Pending CN102395396A (zh)

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GB0906640.8 2009-04-17
GBGB0906640.8A GB0906640D0 (en) 2009-04-17 2009-04-17 A needle cap assembly
US17557009P 2009-05-05 2009-05-05
US61/175,570 2009-05-05
PCT/GB2010/000783 WO2010119271A1 (en) 2009-04-17 2010-04-19 Pen needles and needle cap assemblies

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