公开(公告)号：US20130261993A1

公开(公告)日：2013-10-03

申请号：US13851207

申请日：2013-03-27

申请人： Timothy L. Ruchti ,  Brian G. Markey ,  Anatoly S. Belkin ,  Paul T. Kotnik ,  Mohammed M. Khair

发明人： Timothy L. Ruchti ,  Brian G. Markey ,  Anatoly S. Belkin ,  Paul T. Kotnik ,  Mohammed M. Khair

IPC分类号： G01F1/74

CPC分类号： G01F1/74 ,  A61M5/16831 ,  A61M5/365 ,  A61M2205/331 ,  F04B43/0081 ,  F04B51/00

摘要： Various systems and methods for detecting air in a chamber of an infusion system are disclosed. In one embodiment, a determination is made that air is contained in the chamber on the basis of a change in the average force exerted against the plunger utilizing a derivative spike for event detection and a systematic reduction in the average force to confirm the nature of the change. In another embodiment, a determination is made that the chamber contains air when a difference between the current force profile and a baseline force profile crosses a threshold. In an additional embodiment, a force profile is classified as being an air force profile or a liquid force profile based on extracted features of the force profile.

摘要翻译： 公开了用于检测输注系统的腔室中的空气的各种系统和方法。 在一个实施例中，基于使用用于事件检测的导数尖峰对柱塞施加的平均力的变化，确定空气被容纳在腔室中，并且系统地减小平均力以确认 更改。 在另一个实施例中，当当前力分布和基线力分布之间的差异跨越阈值时，确定腔室包含空气。 在另外的实施例中，基于所提取的力分布特征将力分布分类为空气分布或液体力分布。