Patent ID: 9744344
Date: 2017-08-29
CPC Classifications: A61B,A61M

Claim:
1. A method, comprising: coupling a fluid transfer device to an indwelling peripheral intravenous line at least partially disposed in a vein of a patient, the fluid transfer device including at least a catheter configured to be moved relative to the indwelling peripheral intravenous line; moving the catheter from a first position, in which the catheter is proximal to the indwelling peripheral intravenous line, to a second position, in which at least a portion of the catheter is disposed within the indwelling peripheral intravenous line such that a distal surface of the catheter is disposed at a predetermined distance from a distal tip of the indwelling peripheral intravenous line, the predetermined distance based at least in part on a predefined average distance of a plurality of distances, each distance from the plurality of distances being along a vein from a plurality of veins calculated between a position associated with a distal tip of a peripheral intravenous line and a position associated with a branch vessel having a volumetric flow rate that is greater than a volumetric flow rate threshold; transferring a volume of blood via the catheter from the vein to a fluid reservoir in fluid communication with the catheter; moving the catheter from the second position toward the first position after transferring a desired volume of blood to the fluid reservoir; and decoupling the fluid transfer device from the indwelling peripheral intravenous line after moving the catheter from the second position toward the first position.