Patent ID: 9408569
Filing Date: 2016-08-09
CPC Classification: A61B,A61M

Claim Text:
1. A method of sampling liquids from within a patient comprising: a) inserting a sampling device into a region within a patient, the sampling device comprising a delivery catheter and sampling cannula located within a lumen of the delivery catheter and having a longitudinal axis, the delivery catheter being moveable over the sampling cannula by retraction or extension of the delivery catheter; b) moving the sampling cannula towards a target volume of the patient causing a retraction of the delivery catheter relative to the sampling cannula, thereby exposing the sampling cannula to the target volume of the patient; and c) allowing liquid within the target volume of the patient into the sampling cannula; wherein inserting the sampling device comprises (i) transitioning a proximal valve of a sampling hub from a closed state to an open state by inserting a distal end of the delivery catheter and the sampling cannula at least partially through the proximal valve and (ii) inserting the sampling cannula through a distal valve and distal end of the sampling hub while the distal end of the delivery catheter remains proximal to the distal valve; wherein inserting the sampling device further comprises positioning the sampling cannula and the delivery catheter to be entirely proximal to the sampling hub while the sampling cannula is located within the lumen of the delivery catheter.