Method for blood withdrawal and infusion using a pressure controller
    9.
    发明授权
    Method for blood withdrawal and infusion using a pressure controller 有权
    使用压力控制器进行抽血和输液的方法

    公开(公告)号:US08702638B2

    公开(公告)日:2014-04-22

    申请号:US13594430

    申请日:2012-08-24

    IPC分类号: A61M37/00

    摘要: A method and apparatus for controlling blood withdrawal and infusion flow rate with the use of a pressure controller. The pressure controller uses pressure targets based upon occlusion limits that are calculated as a function of flow. The controller has the ability to switch from controlling withdrawal pressure to controlling infusion pressure based upon the detection of an occlusion. The controller distinguishes between partial and total occlusions of the withdrawal vein providing blood access. Depending on the nature of occlusion, the controller limits or temporarily reverses blood flow and, thus, prevents withdrawal vessel collapse or reverses blood flow to quickly infuse blood into the vessel without participation from operator.

    摘要翻译: 一种使用压力控制器控制取血和输注流速的方法和装置。 压力控制器使用基于作为流量的函数计算的阻塞极限的压力目标。 控制器能够根据遮挡的检测从控制提取压力转换到控制输液压力。 控制器区分提供血液通道的撤离静脉的部分和全部闭塞。 根据闭塞的性质,控制器限制或暂时逆转血液流动,从而防止撤离血管塌陷或逆转血液,以便在没有操作者参与的情况下将血液快速注入血管。