Patent ID: 11931496
Assignee: CARDIACASSIST, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A method of extracorporeal blood oxygenation comprising:
inserting a drainage cannula into a first site of a vasculature of a patient;
inserting an infusion cannula into a second site of the vasculature of the patient, the infusion cannula comprising:
a main tube having a proximal end, a distal end, and a tubular sidewall extending between the proximal end and the distal end; and
an extendable member provided on a portion of the sidewall, wherein the extendable member defines an exposed outer surface of the sidewall extending from a proximal end of the extendable member and a distal end of the extendable member;
wherein the sidewall defines an aperture located between the proximal end and the distal end of the main tube;

extending the extendable member of the infusion cannula radially outward from the sidewall of the infusion cannula to engage an inner wall of the vasculature of the patient;
wherein when the extendable member is engaged with the inner wall of the vasculature, blood is permitted to flow from proximal of the extendable member past the extendable member along and while in contact with the exposed outer surface of the sidewall to distal of the extendable member;
draining blood through the drainage cannula to a blood pump;
pumping, via the blood pump, drained blood through an oxygenator to oxygenate the drained blood; and
returning oxygenated blood to the vasculature of the patient via the infusion cannula.