发明授权
- 专利标题: Noninvasive effective lung volume estimation
- 专利标题(中): 无创有效肺容量估计
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申请号: US10973815申请日: 2004-10-25
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公开(公告)号: US07699788B2公开(公告)日: 2010-04-20
- 发明人: Kai Kuck , Joseph Orr , Lara Brewer
- 申请人: Kai Kuck , Joseph Orr , Lara Brewer
- 申请人地址: US DE Wilmington
- 专利权人: RIC Investments, LLC.
- 当前专利权人: RIC Investments, LLC.
- 当前专利权人地址: US DE Wilmington
- 主分类号: A61B5/00
- IPC分类号: A61B5/00
摘要:
Methods for noninvasively measuring, or estimating, functional residual capacity or effective lung volume include obtaining carbon dioxide and flow measurements at or near the mouth of a subject. Such measurements are obtained during baseline breathing and during and shortly after inducement of a change in the subject's effective ventilation. The obtained measurements are evaluated to determine the amount of time required for exhaled carbon dioxide levels to return to normal—effectively an evaluation of carbon dioxide “washout” from the subject's lungs. Conversely, carbon dioxide and flow measurements may be evaluated to determine the amount of time it takes carbon dioxide to “wash in,” or reach peak levels within, the lungs of the subject following the change in the subject's effective ventilation. Apparatus for effective such methods are also disclosed.
公开/授权文献
- US20050124907A1 Noninvasive effective lung volume estimation 公开/授权日:2005-06-09