公开(公告)号：US06224560B1

公开(公告)日：2001-05-01

申请号：US09151914

申请日：1998-09-11

Applicant: Gopala Krishna Murthy Gazula ,  John J. Godleski

Inventor： Gopala Krishna Murthy Gazula ,  John J. Godleski

IPC: A61B508

CPC classification number: A61B5/087

Abstract: A flow restrictor is applied to a respiration-channeling device such as a tracheostomy tube, a mouthpiece, or a face mask. The flow restrictor creates a pressure differential which varies with volume flow rate. A pressure reading is taken on either side of the flow restrictor in the respiration-channeling device and from this, a volume flow rate is determined. A data acquisition device is used to derive further pulmonary function parameters from the volume flow rate.

Abstract translation: 流量限制器应用于诸如气管造口管，口器或面罩之类的呼吸引导装置。 限流器产生随体积流量变化的压力差。 在呼吸引导装置中的限流器的任一侧进行压力读数，由此确定体积流量。 数据采集​​装置用于从体积流量推导出进一步的肺功能参数。