专利名称：Method and apparatus for calibrating
respiration monitoring system
发明人：Herman Watson申请号：US06/254133申请日：19810414公开号：US04373534A公开日：19830215
摘要：Improved method for calibrating non-invasive system for measuring respirationvolume of the type including apparatus for providing signals indicative of rib cage andabdominal contributions to respiration volume, device for multiplying the rib cage andabdominal signals by predetermined weighting factors reflecting the relativecontributions of the rib cage and abdomen to respiration volume, and device forsumming the weighted signals for providing a signal proportional to respiration volume.Improved method determines the weighting factors by measuring respiration volume byalternate measuring apparatus, simultaneously recording the unweighted rib cage andabdomen signals and the signal from the alternate measuring apparatus for a firstplurality of breaths based on a first relative contribution between rib cage and abdomenand for a second plurality of breaths based on a second relative contribution between ribcage and abdomen, dividing the rib cage and abdomen signals by the signal from thealternate measuring apparatus for each breath for defining first and second coordinatesfor each breath, and determining the x and y intercepts of a line approximation extendingthrough the plurality of points defined by the coordinates, the reciprocals of theintercepts substantially equaling the weighting factors.
申请人：RESPITRACE CORPORATION
代理机构：Hubbell, Cohen, Stiefel & Gross
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