The present invention relates to an apparatus for determining and/or monitoring foreign structures in a fluid or in a fluid flow, in particular blood or bloodstream, having at least one optical monitoring means, at least one ultrasound monitoring means and at least one signal evaluation means, wherein the fluid can be optically monitored at least by means of the optical monitoring means and at least by means of ultrasound by means of the ultrasound monitoring means, and wherein at least one foreign structure, in particular an air bubble and/or a solid body such as a blood clot, can be recognized in the fluid by the signal evaluation means with reference to the combination of the monitoring signals obtained herefrom, in particular with reference to the comparison of the monitoring signals acquired herefrom and/or can be distinguished from at least one second foreign body structure by means of the signal evaluation means.本發明係有關於一種用以測定及/或監測液體或液體流中之外來結構的設備,特別是針對血液或血流,該設備具有至少一光學監測裝置、至少一超音波監測裝置、以及至少一信號評估裝置,其中該液體可以至少藉由該光學監測裝置被進行光學式監測且至少藉由該超音波監測裝置被進行超音波監測,且其中至少一外來結構,特別是一氣泡及/或一諸如血塊之固態物體,參照自此取得之監測信號之組合,特別是參照自此取得之監測信號之比較,可以藉由該信號評估裝置在該液體中辨識出來,及/或可以藉由該信號評估裝置被與至少一第二外來物體結構區分出來。10...設備11...光學感測器/凝塊偵測器12...光源/LED13...光偵測器15...超音波感測器/氣泡偵測器30...導流器/夾箝管/管件B...血液
