US 11,738,131 B2
Expandable ECMO extension cannula system
Navin K. Kapur, Hanover, MA (US)
Assigned to Tufts Medical Center, Inc., Boston, MA (US)
Filed by Tufts Medical Center, Inc., Boston, MA (US)
Filed on Jan. 9, 2023, as Appl. No. 18/151,982.
Application 18/151,982 is a continuation in part of application No. 17/663,205, filed on May 12, 2022, granted, now 11,547,786, issued on Jan. 10, 2023.
Application 17/663,205 is a continuation in part of application No. PCT/US2021/025461, filed on Apr. 1, 2021.
Application PCT/US2021/025461 is a continuation in part of application No. 16/840,284, filed on Apr. 3, 2020, granted, now 11,331,421, issued on May 17, 2022.
Prior Publication US 2023/0158223 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/36 (2006.01); A61M 25/00 (2006.01)
CPC A61M 1/3613 (2014.02) [A61M 1/3659 (2014.02); A61M 2025/0024 (2013.01); A61M 2210/127 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A kit for use with an ECMO machine, the kit comprising:
a cannula comprising a proximal region having an inlet configured to be coupled to the ECMO machine, and an outlet configured to be disposed at a location within a patient's vasculature proximal of a patient's renal vessels;
an extension cannula comprising:
a flexible conduit having a proximal end, a distal end, a length extending therebetween, and a lumen in an expanded deployed state, the flexible conduit configured to transition from a collapsed insertion state to the expanded deployed state when in communication with a blood flow from the ECMO machine so that the lumen forms a continuation of a blood flow path through the cannula; and
an elongated shaft having a distal region coupled to the distal end of the flexible conduit, the elongated shaft configured to advance the flexible conduit in the collapsed insertion state to locate the distal end beyond the patient's renal vessels; and
a peel-away introducer disposed on at least a portion of the flexible conduit, the peel-away introducer configured to be retracted proximally relative to the flexible conduit and peeled off of the flexible conduit,
wherein the length of the flexible conduit is selected so that when the proximal end is located within the outlet at the location within the patient's vasculature proximal of the patient's renal vessels, the distal end extends beyond the patient's renal vessels, and
wherein the elongated shaft is configured so that the blood flow path does not pass through the elongated shaft.