Fluid analysis system

US10201303B2 · kind B2 · utility

Assignee

• OptiScan Biomedical Corporation · US

Inventors

• Eugene Lim · Lafayette, US
• Roger Tong · Berkeley, US
• Peter Rule · Los Altos Hills, US
• James R. Braig · Piedmont, US
• Richard Keenan · Livermore, US
• David N. Callicoat · Hayward, US

Key dates

• Filing date: Jan 27, 2017
• Grant date: Feb 12, 2019
• Expiry date: Jan 27, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/0346
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Systems and method are disclosed for determining a concentration of an analyte in a fluid (e.g., blood). The system can draw blood from a patient and deliver the blood to a sample cell. A particular component of the fluid (e.g., plasma) may be separated and/or positioned such that the concentration of the analyte is measured in the particular component of the fluid (e.g., plasma). The sample cell can include a sample container that has two window pieces. The system can have a fluid passage having a tip configured to mate with a multi-lumen catheter without leaking. The multi-lumen catheter can have proximal and distal ports. A fluid pressure system can be configured to periodically draw fluid from vasculature through a proximal intravascular opening and the proximal port while maintaining a low pressure and/or flow rate to thereby reduce risk of reversing the fluid flow in a vessel and drawing infusates upstream into another intravascular opening.