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CN102176938A - 具有可回缩针的通用注射器 - Google Patents

具有可回缩针的通用注射器 Download PDF

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CN102176938A
CN102176938A CN200980140259.3A CN200980140259A CN102176938A CN 102176938 A CN102176938 A CN 102176938A CN 200980140259 A CN200980140259 A CN 200980140259A CN 102176938 A CN102176938 A CN 102176938A
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syringe according
pin
syringe
needle
connector
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托马斯·J·肖
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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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle 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
    • A61M2005/3117—Means preventing contamination of the medicament compartment of a syringe
    • A61M2005/3118—Means preventing contamination of the medicament compartment of a syringe via the distal end of a syringe, i.e. syringe end for mounting a 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
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
    • A61M2005/3239—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user triggered by dislodgement of outer part anchoring the needle portion to the inside of the syringe barrel wall, e.g. a ring-shaped portion
    • 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
    • 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
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing

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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

本发明涉及对于输液治疗有用的医疗装置，且更具体地，涉及一种注射器，该注射器可选择性地与可回缩针、或与前部附接装置(诸如鲁尔插头、阀)或无针系统中的其他连接器一起使用。

Description

具有可回缩针的通用注射器
发明的背景技术
本发明涉及对于输液治疗(infusion therapy，注射治疗)有用的医疗装置，且更具体地，涉及一种注射器，该注射器可选择性地与可回缩针、与附接至标准鲁尔连接器(luer connector)、或与其他前部附接装置(frontal attachment device)(诸如插头(hub)、阀(valve))或其他适用于无针系统的连接器一起使用。
发明内容
本发明的设备比已知装置应用更广泛，因为其为使用者在单个注射器本体上提供可回缩针和无针连接器两者的功能。本主题设备优选包括筒体(barrel)、可滑动地设置在筒体内的柱塞组件、设置在筒体的前部附近的针回缩组件和可选的保护性防护物、设置在柱塞组件内部的回缩腔、以及在回缩之前密封回缩腔的前端的封闭件(closure)。当装配有针组件时，该设备可用于，例如，从药瓶中抽取药物、执行注射、以及将药物注入具有可刺穿端口的IV给药系统，其中上述针组件可在制造期间或在使用现场根据需要进行附接。当在没有针组件下使用时，该设备也能够附接至前部附接装置，诸如阀(如，连接器)或鲁尔插头，用于将药物引入封闭的IV给药系统中。当与阀一起使用时，在阀与注射器脱离之前，阀理想地通过激活回缩机构而被封闭。该设备还理想地包括向前延伸的保护性防护结构，该保护性防护结构帮助保护通过注射器的流体路径不会因为意外与人或表面接触而被污染。该保护性防护结构优选向外张开，以促进针组件或其他前部附接装置移动进入适于附接至注射器的位置中。
附图说明
参照以下附图，进一步描述和解释本发明的设备，在附图中：
图1是带有附接的针和针盖的本发明优选设备的后透视图；
图2是图1的设备的分解前透视图；
图3是图1的设备的横截面立视图，其中部分拆卸；
图4是图3的设备的横截面立视图，其中针盖被移除；
图5是图1的设备在移除针盖并且针缩回到注射器中之后的横截面立视图；
图6是图2的柱塞手柄的横截面侧视图；
图7是图6的柱塞手柄向前延伸尖端的放大横截面图；
图8是图2的针保持器的放大平面图；
图9是沿图8的线9-9剖开的针保持器的横截面图；
图10是图2的注射器筒体的放大横截面图；
图11是图2的针连接器的放大侧视图；
图12是图11的针连接器的左端视图；
图13是沿图12的线13-13剖开的针连接器的横截面图；
图14是包括图12的针连接器、针和针盖的针组件的放大侧视图；
图15是图14的针组件的横截面图；
图16是图15的针组件的右端部分的横截面详细视图；
图17是图15的针盖的横截面图，其中针连接器和针被移除；
图18是如图1中注射器的部分分解侧立视图，但具有前部附接件(frontal attachment)，该前部附接件是鲁尔插头而非针组件，例如，在图2-4中；
图19是图18的设备的放大横截面图，但示出了连接到注射器的鲁尔插头；
图20是图1中注射器的部分分解侧立视图，其中部分拆卸，但具有包括阀的前部附接件；以及
图21是图20的设备的放大横截面图，但示出了连接到注射器的前部附接件。
具体实施方式
参照图1，公开的本发明的优选设备20包括与前部附接件结合的注射器22，该前部附接件是针组件24。参照图1并结合作为分解图的图2，设备20的注射器22优选包括柱塞组件，该柱塞组件进一步包括柱塞手柄28、后插塞26、前插塞30、和柱塞密封件32。在前插塞30与后插塞26之间的柱塞把手28内部还设置一个回缩腔，并且注射器22的部分筒体40也可用作该回缩腔的一部分。出口(vent，通气孔)23理想地设置在柱塞把手的后部附近。
注射器22还优选包括回缩组件，该回缩组件进一步包括针保持器36、固位件(retainer member)34、和回缩弹簧38。固位件34优选能够附接至针保持器36，且针保持器36优选部分可插入弹簧38内。在注射器22的制造期间，回缩组件优选安装在筒体40内，且此后柱塞组件在回缩组件后面安装到筒体40内。
针组件优选包括针连接器42、针44和针盖46。针44优选相对针连接器42以固定关系固定，且针连接器42的相对端理想地旋入(thread into)针保持器36的带匹配螺纹的向前延伸部分中，如下面参照图3和4所描述。如果需要，设备20能够以此形式制造，或者针组件可分开包装和销售，且在使用现场附接至注射器22。
参照图3和4，固位件34优选是单独的弹性件，但也可以是一体模制的或形成为针保持器36的部分，从而在固位件、针保持器36和筒体40之间提供流体密封，并由此在针回缩组件和柱塞密封件32之间建立流体腔，并还通过与筒体40接合使弹簧38保持处于压缩。根据本发明的一个特别优选的实施例，针保持器36包括能够与部分筒体40接合的狭槽或其他结构，从而抵抗针保持器与筒体之间的相对转动，特别是在将针组件或其他前部附接件附接至注射器以形成设备20期间。针盖46的外侧优选滑动到内螺纹54之内，以允许针连接器42与针保持器36带匹配螺纹的部分之间以螺纹接合，其中针44通过粘胶或其他类似有效的已知方法以固定关系附接至该针连接器上。由此，针44的内孔被放置为与针保持器36的内孔48并且与筒体40内针保持器36后面的流体腔流体连通。在柱塞手柄28的向前延伸部分之内的前插塞30在当使用者启动回缩时前插塞30向后位移之前，防止任何分配到注射器内的流体进入柱塞手柄内的回缩腔部分中。保护性防护结构52的元件理想地相对筒体40向外倾斜，以在连接前部附接件之前或期间减少污染针保持器36的向前延伸尖端的可能性，在该情形中，针组件包括针盖46、针40和针连接器42。保护性防护结构52的倾斜元件还有助于导引前部附接件与针保持器36的前部对准。在将针连接器42附接至针保持器36之后，并且恰在使用之前，针盖46理想地从与针连接器42的摩擦接合中移除，如图4所示。
参照图5，注入流体通过注射器22、针连接器42和针44之后，通过迫使柱塞手柄28相对筒体40向前而启动针44的回缩，由此引起前插塞30的前部接触针保持器36的面向后的部分。当这发生时，前插塞30向后位移，且柱塞手柄28向前延伸的尖端接触并推动固位件34向前进入环状凹入部50，由此使固位件34从针保持器36脱离并允许压缩的弹簧38迫使针保持器36、针连接器42和针44向上进入注射器22到这样的位置，在该位置针44的前尖端不再从筒体40的前部伸出到可引起意外针刺的位置。当柱塞手柄28邻接筒体40的内侧时，使用者的手对后插塞26施加压力，同时对径向延伸的法兰件64的面向前的表面施加相反的手指力，会理想地促使围绕柱塞手柄28背部的外围件66被迫进入套环62的背开口内的凹入位置中。随着针保持器36由于弹簧38的力而向后移动，前插塞30也被迫向上进入柱塞手柄28内的腔中，且腔内空气可通过出口23逸出。
参照图6-17进一步示出、描述和解释参照图1-5公开的优选设备的其他部分。图6公开了柱塞手柄28、柱塞手柄28内的回缩腔70、以及柱塞手柄28的向前延伸的尖端，该向前延伸的尖端进一步包括环状凸起42，该环状凸起与台肩76配合以限定一个凹入部74，上述柱塞密封件32可位于该凹入部中以紧靠注射器筒体的内侧提供流体密封。箭头78指示柱塞手柄78的敞开前端，在装配期间图2的前插塞30位于其中。参照图7，其示出更好地描绘了柱塞手柄28的台阶状前端的细节图，其中表面80向前伸出的程度比表面82大。这样的台阶优选用于集中柱塞手柄在对固位件34的另一侧施力之前对其一侧施加的回缩力，由此帮助将固位件34从针保持器36移除。
图8进一步示出了针保持器36的柱形头部84，分裂的环状台肩86，狭槽90，狭槽壁88、92，以及锥形外鲁尔表面58。上面讨论的弹簧38的后部邻接台肩86，且针保持器36的向前延伸部分的外径理想地稍微小于压缩的弹簧38的内径，以允许弹簧38的线圈环绕针保持器的向前延伸部分。参照图9，在包括鲁尔表面58的部分之内的内螺纹92理想地形成配合尺寸并对准，以接收针连接器42的相应外螺纹与其接合，如上所述。锥形表面100理想地可滑动接合针连接器42的表面112，如下面参照图11和12所述，且通道94、96和98配合建立通过针保持器36的流体流动路径。
图10进一步公开了后开口60、环状套环62、可握持的手指法兰64、内螺纹54和保护性防护结构52的向前和向外伸出的元件。
图11-13进一步公开了围绕针连接器42前部沿圆周设置的肋108、建立通过连接器的流体路径的居中设置的孔106、外螺纹110、和锥形导向接合表面112。
图14-17进一步公开了后端116和后开口122、向前延伸的锥形外壁部分114、和针盖46的封闭端115。在将针连接器42附接至注射器22之前，如上所述，针44的后端理想地插入到针盖46的细长腔118中，并被胶粘或其他方式相对针连接器42固定地附接至孔106内部。针连接器42理想地摩擦接合针盖46的部分116的内壁，其接合方式是针连接器42的自由端驻存在基本柱形的空间120内，更优选如果作为独立组件提供，则包装在消毒包装材料内，直到当针连接器42旋入注射器的针保持器内，如上所述。
图18-19公开了前部附接件126，该前部附接件包括鲁尔插头132、鲁尔锁定法兰134、针136和手指握持部128、140，手指握持部用于将鲁尔插头旋入与内螺纹54的密封接合中，其中上述内螺纹在注射器122的筒体40的前部内，保护性防护结构52后面。可握持的表面脊130还理想地设置在注射器22上，以促进在前部附接件的连接期间的握持。前部附接件126的内腔138提供针136与针连接器42内的腔98之间的流体连通，如上所述。虽然包括固位件34、针保持器36和弹簧38的回缩组件仍然保持在位，但在该实施例中针136不能回缩到注射器22内，且必须回收或更优选地置于许可的锐头处置容器中。
图20-21公开了作为具有外部螺纹144的阀组件的前部附接件142，该外部螺纹也可附接至筒体40的保护性防护结构52后面的内螺纹54。在该实施例中，没有在使用后需缩回的针。
对于本领域的普通技术人员来说，在结合附图阅读本说明书时，本发明的其他变化和修改将同样变得显而易见，并且目的在于这里公开的本发明的范围仅由所附权利要求的最广泛解释来限定，该权利要求是合法赋予本发明人的。

Claims (16)

1.一种注射器，所述注射器能够选择性地与可回缩针一起使用或用于无针系统中。
2.根据权利要求1所述的注射器，进一步包括前部附接装置。
3.根据权利要求2所述的注射器，其中，所述前部附接装置是针组件。
4.根据权利要求3所述的注射器，其中，所述针组件包括针连接器、针、以及针盖。
5.根据权利要求2所述的注射器，其中，所述前部附接装置是无针连接器。
6.根据权利要求5所述的注射器，其中，所述前部附接装置是阀。
7.根据权利要求2所述的注射器，其中，所述前部附接装置包括鲁尔插头。
8.根据权利要求1所述的注射器，进一步包括筒体、可滑动地设置在所述筒体内部的柱塞组件、设置在所述筒体的前部附近的针回缩组件、设置在所述柱塞组件内部的回缩腔、以及在回缩之前密封所述回缩腔的前端的封闭件。
9.根据权利要求1所述的注射器，进一步包括设置在所述筒体的前部附近的保护性鲁尔防护物。
10.根据权利要求8所述的注射器，其中，所述针回缩组件进一步包括针保持器和弹簧。
11.根据权利要求10所述的注射器，其中，所述针保持器具有能够附接至针连接器的前部。
13.根据权利要求11所述的注射器，其中，所述针连接器具有附接的针。
14.根据权利要求1所述的注射器，进一步包括能够与所述针回缩组件接合的针。
15.根据权利要求8所述的注射器，其中，所述柱塞组件进一步包括柱塞手柄、柱塞密封件、柱塞端帽、前封闭件和后封闭件。
16.根据权利要求8所述的注射器，其中，所述回缩腔的后部有出口。
17.根据权利要求8所述的注射器，其中，所述针回缩组件包括针保持器和弹簧。
CN200980140259.3A 2008-10-22 2009-10-08 具有可回缩针的通用注射器 Pending CN102176938A (zh)

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US20100286604A1 (en) 2010-11-11
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US8343094B2 (en) 2013-01-01
AU2009307960A1 (en) 2010-04-29
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US8636688B2 (en) 2014-01-28
US20130006190A1 (en) 2013-01-03
EP2341962A1 (en) 2011-07-13

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