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    • 1. 发明授权
    • Retracting needle syringe
    • 收回针头注射器
    • US6010486A
    • 2000-01-04
    • US216561
    • 1998-12-18
    • Michael J. CarterRichard Caizza
    • Michael J. CarterRichard Caizza
    • A61M5/178A61M5/32A61M5/34A61M5/50A61M5/00
    • A61M5/3234A61M5/347A61M5/502A61M5/508
    • A retracting needle syringe is described which allows safe and easy disposal of a syringe and prevents re-use of the syringe by destroying the plunger rod and needle hub and retracting the needle into the plunger rod. Once the safety feature is activated, positive or negative pressure in the barrel to draw out medication is defeated. The retracting needle safety feature requires only an increase of force along the same line of action as the injection stroke. This allows for safe, one-handed injection, which is critical in some situations. The retracting needle syringe of the present invention also minimizes the amount of wasted medication because the plunger rod incorporates a plunger tip that occupies the entire volume inside the barrel. Because the retracting needle syringe uses standard luer-lok fittings, it can be used with a variety of standard needles that do not have retracting cannula. This gives the healthcare professional or patient the ability to use a large gauge needle to fill the syringe from a vial or other container before attaching the safety needle for injection. Lastly, the plunger can be completely encapsulated by the barrel upon activation of the retracting needle syringe safety feature which will prevent re-use of the syringe and allow for safe and easy disposal.
    • 描述了一种缩回针注射器,其允许安全且容易地处置注射器,并且通过破坏柱塞杆和针座并将针收回到柱塞杆中来防止注射器的再次使用。 一旦激活了安全功能,就可以消除桶内出现药物的正压或负压。 回缩针安全功能仅需要沿着与注射冲程相同的作用线的力的增加。 这允许安全的单手注射,这在某些情况下是至关重要的。 本发明的回缩针头注射器还使浪费的药物的量最小化,因为柱塞杆包括占据桶内的整个体积的柱塞头。 因为回缩针头注射器使用标准的路厄 - 洛克配件,它可以与不具有回缩插管的各种标准针一起使用。 这给予医疗保健专业人员或患者在附加用于注射的安全针之前使用大型针头从小瓶或其他容器填充注射器的能力。 最后,在启动回针针头安全特征时,柱塞可以被筒完全包封,这将防止再次使用注射器,并允许安全和容易的处置。
    • 5. 发明授权
    • Method of making a retracting needle syringe
    • 回缩针头注射器的制作方法
    • US06517516B1
    • 2003-02-11
    • US09419185
    • 1999-10-15
    • Richard Caizza
    • Richard Caizza
    • A61M500
    • A61M5/3234A61M5/002A61M5/3202A61M5/349A61M5/502A61M5/508
    • A method of making a retracting needle assembly for use with a syringe barrel having a cylindrical collar and a plunger having a release element with a sharp distal end includes an outer hub having a passageway therethrough and an inner hub having a proximal end, a distal end and a conduit therethrough. The proximal end of the inner hub has an inner portion and a dissociable outer portion connected to the inner portion. The dissociable outer portion is further connected to the outer hub. The distal end of the inner hub is smaller than the passageway of the outer hub at the distal end of the outer hub and projects distally outwardly therefrom. A needle cannula having a distal end, a proximal end, and a lumen therethrough is connected to the inner hub so that the lumen is in fluid communication with the conduit. An energized spring is contained between the inner and outer hub. Structure is provided for connecting the outer hub to the collar of the syringe barrel.
    • 一种用于与具有圆柱形套环的注射器筒一起使用的缩回针组件的方法和具有具有尖锐远端的释放元件的柱塞包括具有穿过其的通道的外部毂和具有近端的内部毂, 和导管。 内毂的近端具有连接到内部的内部部分和可解离的外部部分。 可分离的外部部分进一步连接到外部毂。 内轮毂的远端比外轮毂的远端处的外轮毂的通道小,并向外突出。 具有远端,近端和穿过其中的内腔的针管连接到内部毂,使得内腔与导管流体连通。 一个有弹性的弹簧被容纳在内部和外部毂之间。 提供用于将外毂连接到注射器筒的套环的结构。
    • 10. 发明授权
    • Hypodermic syringe with selectively retractable needle
    • 具有选择性伸缩针的皮下注射器
    • US06413237B1
    • 2002-07-02
    • US09652374
    • 2000-08-31
    • Richard CaizzaSimon CohnJonathan Gabel
    • Richard CaizzaSimon CohnJonathan Gabel
    • A61M500
    • A61M5/3234A61M5/508A61M2005/31516A61M2209/06
    • A hypodermic syringe with a selectively retractable needle includes an elongate barrel having an open proximal end, an open distal end and a hollow bore. The syringe includes an elongate plunger including a hollow outer housing having an open proximal end and an open distal end. The plunger has a hollow inner sleeve defining a cavity therein. The plunger has releasable engagement elements preventing relative axial movement between the outer housing and the inner sleeve, the elements allowing the relative axial movement when released and a distal stopper. There is an open cutter mounted at a proximal end of the inner sleeve to cut through the stopper to expose the cavity in the inner sleeve when the engagement elements are released and sufficient distal axial force is applied to the plunger. The syringe has a hub housing with an open proximal end having an inwardly projecting shoulder, a hub with a proximal flange and an axial stem, sized to fit within the hub housing. There is a spring disposed about the stem between the flange and the shoulder. The syringe has a needle with a sharp point extending outwardly. The needle retracts into the cavity in the plunger when sufficient distal force is applied to the plunger to release the engagement elements. The release allows movement of the inner sleeve with respect to the outer housing so that the cutter cuts through the stopper and the flange and the spring urges movement of the needle into the cavity.
    • 具有可选择性缩回针的皮下注射器包括具有开口近端,开口远端和中空孔的细长筒。 注射器包括细长的柱塞,其包括具有敞开的近端和敞开的远端的中空的外壳。 柱塞具有在其中限定空腔的中空内套筒。 柱塞具有可释放的接合元件,防止外部壳体和内部套筒之间的相对轴向运动,所述元件在释放时允许相对轴向移动,并且远端止动件。 当接合元件被释放并且向柱塞施加足够的远端轴向力时,存在安装在内套筒的近端处的开式切割器,以切割止动件以露出内套筒中的空腔。 注射器具有轮毂壳体,其具有敞开的近端,其具有向内突出的肩部,具有近侧凸缘和轴向杆的轮毂,其尺寸适于装配在轮毂壳体内。 在法兰和肩部之间设置有围绕杆的弹簧。 注射器具有尖端向外延伸的针头。 当足够的远端力施加到柱塞以释放接合元件时,针缩回到柱塞中的空腔中。 释放允许内套筒相对于外壳移动,使得切割器切穿塞子并且凸缘和弹簧推动针头进入腔体的运动。