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CN105792866A 用于具有整合式状态指示的药物投递泵的驱动机构 失效 - 权利终止

用于具有整合式状态指示的药物投递泵的驱动机构
摘要：
驱动机构(2100、3100)包括壳体(2130)、适合于对药物容器(2050)内的柱塞密封件(2060)赋予移动的活塞(2110)、并联布置的多个偏压构件(2106、2122)和保持器(2115)。偏压构件(2106、2122)布置成释放能量以促使活塞(2110)从缩回第一位置到伸展第二位置的移动，所述活塞(2110)支承在柱塞密封件(2060)上来分配药。保持器(2115)布置成维持偏压构件(2106、2122)在激励位置并且释放偏压构件(2106、2122)以允许所述活塞(2110)分配药。驱动机构(2100、3100)还可以包括剂量结束指示器(2133、3133)以识别何时套筒组件(2120、3120)布置成邻近壳体(2130、3130)中的窗口(2131、3131)、套筒组件(2120、3120)关于窗口(2131、3131)或另一参考部件的相对移动、这种移动的停止和移动速率或速率变化中的至少一个。
摘要（英）：

A drive mechanism (2100, 3100) includes a housing (2130), a piston (2110) adapted to impart movement to a plunger seal (2060) within a drug container (2050), a plurality of biasing members (2106, 2122) disposed in parallel, and a retainer (2115). The biasing members (2106, 2122) are disposed to release energy to cause movement of the piston (2110) from a retracted first position to the extended second position, the piston (2110) bearing against the plunger seal (2060) to dispense medicine. The retainer (2115) is disposed to maintain the biasing members (2106, 2122) in the energized position and to release the biasing members (2106, 2122) to permit the piston (2110) to dispense the medicine. The drive mechanism (2100, 3100) may also include an end-of-dose indicator (2133, 3133) to identify at least one of when the sleeve assembly (2120, 3120) is disposed adjacent a window (2131, 3131) in the housing (2130, 3130) the relative motion of the sleeve assembly (2120, 3120) with reference to the window (2131, 3131) or another reference component, the stoppage of such motion, and the rated or change of rate of motion.

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