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    • 1. 发明申请
    • Fixed-Dose Syringe with Limited Aspiration
    • 固定剂量注射器有限吸气
    • US20080221517A1
    • 2008-09-11
    • US12124506
    • 2008-05-21
    • Thomas J. ShawGary WoodMark Small
    • Thomas J. ShawGary WoodMark Small
    • A61M5/50A61M5/178A61M5/315
    • A61M5/31535A61M5/3234A61M5/508A61M2205/582
    • A syringe configured with a limited maximum usable capacity. The syringe of the invention desirably has a retractable needle to prevent reuse. In the preferred embodiment, a dose-limiting structure includes a stop-ring member on the head of the plunger that abuts a constriction in the housing when the plunger is moved away from the needle to prevent the further rearward movement of the plunger. Preferably, the syringe of the invention is configured such that a user is tactilely signaled when the plunger has reached a position corresponding to a nominal fixed-dose. If the user attempts to force the stop-ring member beyond the constriction, the plunger seal is stripped off or removed from the plunger head and the syringe rendered inoperable. The features of the invention can also be applied to a nonretracting syringe.
    • 注射器配置有限的最大可用容量。 本发明的注射器理想地具有可缩回的针以防止重复使用。 在优选实施例中,剂量限制结构包括在柱塞的头部上的止动环构件,其在柱塞远离针头移动时抵靠壳体中的收缩部,以防止柱塞进一步向后移动。 优选地,本发明的注射器被构造成使得当柱塞已经达到对应于标称固定剂量的位置时,用户被触觉地发出信号。 如果用户试图迫使止动环构件超出收缩部,则活塞密封件被从柱塞头剥离或移除,注射器不可操作。 本发明的特征也可以应用于非拉伸注射器。
    • 2. 发明申请
    • Blood Draw Device with Retractable Needle
    • 带伸缩针的抽血装置
    • US20120259243A1
    • 2012-10-11
    • US13517465
    • 2010-12-29
    • Thomas J. ShawMark SmallNi Zhu
    • Thomas J. ShawMark SmallNi Zhu
    • A61B5/153
    • A61B5/1444A61B5/15003A61B5/150259A61B5/150351A61B5/150389A61B5/150496A61B5/150572A61B5/150656A61B5/150732A61B5/154A61M5/3232A61M2005/3206
    • The Invention comprises a body, an actuator pivotally connected to the body, and a retractable needle adapted to provide fluid communication between a patient and a fluid collection tube, typically a blood collection tube, attachable to the device. A significant feature of the subject device is a retraction cavity disposed inside the actuator that is manually positionable to receive a portion of the needle retraction assembly following removal of the blood collection tube. Retraction is initiated by depressing the forwardly extending end of the actuator relative to the body, thereby causing a retainer clip to release the needle holder, after which the needle holder and a part of the needle are propelled into the retraction cavity by expansion of a compressed spring. The needle is thereby withdrawn from the patient and into the housing, reducing the likelihood of accidental needle sticks and preventing reuse of the device.
    • 本发明包括主体,枢转地连接到主体的致动器,以及可伸缩针,其适于提供可附接到该装置的患者与集液管(通常为采血管)之间的流体连通。 主体装置的显着特征是设置在致动器内部的缩回空腔,其可手动定位以在取出采血管之后接收针回缩组件的一部分。 通过按压致动器的向前延伸的端部相对于主体来启动缩回,从而使保持器夹子释放针保持器,之后针保持器和针的一部分通过压缩的膨胀被推入到缩回空腔中 弹簧。 因此,针从患者中撤出并进入外壳中,减少了意外针刺的可能性并防止了装置的再次使用。
    • 10. 发明授权
    • Fluid flow control device with retractable cannula
    • 具有伸缩插管的流体流量控制装置
    • US08469927B2
    • 2013-06-25
    • US13470855
    • 2012-05-14
    • Thomas J. ShawMark SmallNi Zhu
    • Thomas J. ShawMark SmallNi Zhu
    • A61M5/00
    • A61M5/3232A61M5/158A61M5/3257A61M5/50A61M25/0631A61M25/0637
    • A device having a housing; a cannula projecting forwardly from the housing; a connector useful for attaching the device to a fluid source or receptacle; a fluid flow path establishing fluid communication between the cannula and the connector; a retraction mechanism biasing the cannula away from its projecting position; and an actuator supported by the housing and configured to modify the fluid flow path so as to terminate fluid flow through the device, seal off the fluid flow path, and release the retraction mechanism to retract the cannula into the housing. The subject device is particularly preferred for use in the medical field, for example, as part of an infusion set or as a collection device for blood, or other fluids or flowable matter.
    • 具有壳体的装置; 从所述壳体向前突出的套管; 用于将装置附接到流体源或容器的连接器; 流体流动路径,其在套管和连接器之间建立流体连通; 缩回机构,其使套管偏离其突出位置; 以及致动器,其由所述壳体支撑并且构造成修改所述流体流动路径,以便终止通过所述装置的流体流动,密封所述流体流动路径,并且释放所述缩回机构以将所述套管缩回到所述壳体中。 本发明装置特别优选用于医疗领域,例如作为输液器的一部分或作为血液的收集装置或其它流体或可流动物质。