SAMPLE INTRODUCTION DEVICE

摘要

A sample introduction device is provided that is particularly useful in the critical care environment for the anaerobic withdrawal of small volumes of arterial blood from a sample collection syringe and introduction thereof into a sample chamber of a sensor for analysis. The sample introduction device includes a Luer fitting adapted to mate an outlet of the container in a concentric orientation with an input aperture of the sample chamber. A tubular probe is adapted for concentric placement with both the outlet and inlet aperture, with a first end thereof extending into the syringe and a second end adapted for attachment to an air supply. A predetermined volume of air is injected through the probe into the container to displace a predetermined volume of sample therefrom, thus reducing or eliminating the need for washing the interior of the probe and reducing the use of wash reagents.