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    • 32. 发明授权
    • Constant force syringe
    • 恒力注射器
    • US09101713B2
    • 2015-08-11
    • US13797959
    • 2013-03-12
    • MEDRAD, INC.
    • Kevin P. CowanBarry L. Tucker
    • A61M5/315A61M5/168A61M5/20A61M5/00A61M5/145
    • A61M5/3148A61M5/007A61M5/14526A61M5/16877A61M5/2053A61M5/3137A61M5/31515A61M5/36A61M5/48A61M2005/3123A61M2005/3128A61M2005/3139A61M2202/0007
    • Various syringe systems are disclosed. One such syringe system may include a body having a hollow lumen and a distal end, a vacuum chamber disposed within the hollow lumen of the syringe body, a first plunger connected to a distal portion of the vacuum chamber, the first plunger forming a first seal against an inner surface of the syringe body and defining a fluid delivery volume between the first plunger and the distal end of the syringe body, a second plunger disposed within the vacuum chamber, the second plunger forming a second seal against an inner surface of the vacuum chamber and defining a proximal and distal volume compartments within the vacuum chamber, and a piston affixed to the second plunger, the piston configured to move the second plunger within the vacuum chamber, thereby altering a volume of the proximal volume compartment and a volume of the distal volume compartment.
    • 公开了各种注射器系统。 一个这样的注射器系统可以包括具有中空内腔和远端的本体,设置在注射器主体的中空腔内的真空室,连接到真空室的远端部分的第一柱塞,第一柱塞形成第一密封件 抵靠注射器主体的内表面并且在第一柱塞和注射器主体的远端之间限定流体输送体积,设置在真空室内的第二柱塞,第二柱塞形成抵靠真空内表面的第二密封 并且限定真空室内的近端和远端容积隔室,以及固定到第二柱塞的活塞,活塞构造成使第二柱塞在真空室内移动,由此改变近端容积隔室的体积和 远端容积室。
    • 35. 发明授权
    • Computer controlled drug delivery system with dynamic pressure sensing
    • 具有动态压力感应的计算机控制药物输送系统
    • US07896833B2
    • 2011-03-01
    • US12552723
    • 2009-09-02
    • Mark N. Hochman
    • Mark N. Hochman
    • A61M31/00
    • A61M5/48A61C1/0015A61C19/08A61M5/24A61M5/46A61M2005/2407A61M2005/2488A61M2205/3344A61M2205/581A61M2205/582
    • Apparatus administers dental anesthetic to intraligamentary tissue with a drive unit and handpiece with injection needle connected by flexible tube to the unit. The drug is passes to the tissue at an instantaneous pressure at the needle tip that varies due to placement. A minimum threshold pressure is desired for administering the drug to the tissue. A practitioner moves the handpiece to insert the needle tip near the intraligamentary tissue and the instantaneous pressure is sensing or calculating. An auditory ascending signal indicates when the instantaneous pressure is rising, and when the instantaneous pressure reaches the threshold pressure a perceptible auditory specific signal indicates the practitioner has moved the tip into intraligamentary tissue. The tip is then maintained for supplying a selected dosage of the drug. Another auditory signal notifies the practitioner that the instantaneous pressure is declining or fluctuating before reaching the minimum threshold pressure.
    • 装置用驱动装置向管腔内组织施用牙科麻醉剂,并将注射针通过柔性管连接到装置上的手柄。 药物在针尖处的瞬时压力下传递到组织,由于放置而变化。 期望将药物施用于组织的最小阈值压力。 从业者移动手持件将针尖插入内侧组织附近,并且瞬时压力被感测或计算。 听觉上升信号指示瞬时压力何时上升,并且当瞬时压力达到阈值压力时,可察觉的听觉特定信号指示从业者将尖端移动到内耳组织中。 然后保持尖端以供应选定剂量的药物。 另一听觉信号通知从业者在达到最小阈值压力之前瞬时压力正在下降或波动。