Patent ID: 9585605
Date: 2017-03-07
CPC Classifications: A61B

Claim:
1. A lactate monitoring system comprising: a pump including a piston that can be linearly moved in first and second opposite directions within a cylinder, the cylinder including a first end and a second end, the cylinder also including an end port positioned at the first end of the cylinder and a side port positioned between the first and second ends of the cylinder, the side port having a larger transverse cross-sectional area than the end port; a reservoir containing calibrant and anticoagulant, the reservoir being fluidly connected to the side port of the cylinder such that the calibrant and anticoagulant can be drawn into the cylinder through the side port when the piston is moved in the second direction while an end of the piston is positioned between the side port and the second end of the cylinder; a fluid flow line that extends from the end port to a patient blood sampling end of the fluid flow line, wherein the calibrant and anticoagulant are pushed out of the cylinder and into the fluid flow line when the piston is moved in the first direction within the cylinder, and wherein a blood sample is drawn into the patient blood sampling end of the fluid flow line when the piston is moved in the second direction while the end of the piston is between the side port and the first end of the cylinder; and a lactate sensor positioned along the fluid flow line.