Devices for percutaneous PA-LA cannulation and methods of delivering and using the same
View Patent ↗A pulmonary artery (PA) via trans-septal to left atrial (LA) percutaneous dual lumen cannulation system which reduce the pressure of the right ventricle provides drainage of pulmonary artery blood with bypassing the lung while return the blood to the Left Atrium (LA) without the need for thoracotomy for a wearable pump less extra corporeal lung assist (pECLA) to remove CO 2 , pump less extra corporeal membrane oxygenation (ECMO), para-corporeal pump driven CO 2 removal, extra corporeal CO 2 removal (ECCO 2 R) pump driven, para-corporeal pump driven membrane oxygenation, or extra corporeal membrane oxygenation (ECMO) with extra-corporeal pump. By establishing percutaneously a shunt with a dual lumen cannula between PA and LA using the PA-LA pressure gradient as the driving force for the blood flow through the drainage lumen, CO 2 removal device, or oxygenator and return cannula lumen in the vascular system.
1. A dual lumen cannula assembly comprising:
(i) a proximal part comprising two tubes: a first tube defining a blood delivery lumen and a second tube defining a blood drainage lumen,
(ii) a mid-portion comprising the two tubes integrated into one body up to a bifurcation in which the first tube and the second tube separate into a first and second distal tube; and
(iii) a distal part comprising the two separate distal tubes,
wherein the first distal tube comprises a trans-septal fixation.
2. The dual lumen cannula assembly of claim 1 , wherein the first distal tube has a length of at least 4 cm and the second distal tube has a length of at least 10 cm.
3. The dual lumen cannula assembly of claim 1 , wherein the ratio of the length of the first distal tube and the length of the second distal tube is between 0.4 to 0.8.
4. The dual lumen cannula assembly of claim 1 , wherein the length of the first distal tube is at least 6 cm shorter than the length of the second distal tube.
5. The dual lumen cannula assembly of claim 1 , wherein:
(i) the length of the first distal tube is in the range of 4 to 40 cm and the length of the second distal tube is in the range of 10 to 50 cm; and/or
(ii) the outer diameter of the first distal tube is in the range of 2.6 mm to 10.33 mm and the diameter of the second distal tube is in the range of 3.33 mm to 11 mm.
6. The dual lumen cannula assembly of claim 1 , wherein the length of the second distal tube is adjustable.
7. The dual lumen cannula assembly of claim 1 , wherein the second distal tube is configured to drain liquid simultaneously from two or more areas of the heart and its vasculature.
8. The dual lumen cannula assembly of claim 1 , wherein the second distal tube is configured to drain liquid simultaneously from:
(i) PA and right ventricle (RV) and the distance of the one or more openings or sections of openings from the tip of the second distal tube is in the range of 3 cm to 35 cm;
(ii) PA, RV and right atrium (RA) and the distance of the one or more openings or sections of openings from the tip of the second distal tube is in the range of 6 cm to 35 cm;
(iii) PA, RV, RA and superior vena cava (SVC) and the distance of the one or more openings or sections of openings from the tip of the second distal tube is in the range of 10 cm to 35 cm;
(iv) RV and the distance of the one or more openings or sections of openings from the tip of the second distal tube is in the range of 3 cm to 35 cm;
(v) RA and the distance of the one or more openings or sections of openings from the tip of the second distal tube is in the range of 6 cm to 35 cm; or
(vi) SVC and the distance of the one or more openings or sections of openings from the tip of the second distal tube is in the range of 10 cm to 35 cm.
9. The dual lumen cannula assembly of claim 1 , wherein the first distal tube and/or the second distal tube comprise an introducer, wherein the respective introducer has at least a single guide wire lumen of at least 0.3556 mm.
10. The dual lumen cannula assembly of claim 1 , wherein the trans-septal fixation comprises one wire mesh disk at the LA site or two wire mesh disks first at the LA site and second at the RA site.
11. The dual lumen cannula assembly of claim 1 , wherein the first tube comprises in its lumen a helical structure, that creates a spiral outflow of liquids passed through said structure towards the distal end of the first distal tube.
12. The dual lumen cannula assembly of claim 1 , wherein the second tube comprises in its lumen a helical structure, that creates a spiral inflow of liquids passed through said structure towards the proximal end.
13. The dual lumen cannula assembly of claim 1 , wherein the cannula is connected with a para-corporeal membrane pump.
14. The dual lumen cannula assembly of claim 1 , where the first distal tube has a length of at least 10 cm.
15. The dual lumen cannula assembly of claim 1 , where the first distal tube has a length of at least 20 cm.
16. The dual lumen cannula assembly of claim 1 , wherein the first and/or second tube is wire re-inforced.
17. The dual lumen cannula assembly of claim 1 , wherein the proximal part:
(i) is configured to be positioned outside the body of the patient;
(iia) comprises the two tubes integrated into one cylindrical body; or
(iib) comprises a bifurcation in which the first tube and the second tube separate into a first and second proximal tube.
18. The dual lumen cannula assembly of claim 1 , wherein the first tube defines only a blood delivery sub-lumen and the assembly comprises a third tube, which defines a blood delivery sub-lumen, where the first tube and the third tube are configured to be guided through and/or end in different halves of the heart.
19. A blood decarboxylation assembly comprising:
(i) the dual lumen cannula assembly of claim 1 , and
(ii) a blood CO 2 removal device attached to the first and second tube of the proximal part of said dual lumen cannula assembly in such a way that the CO 2 concentration of blood flowing through the second tube into the blood CO 2 removal device is lowered when passing through the blood CO 2 removal device and into the first tube.
20. The blood decarboxylation assembly of claim 19 , wherein the assembly comprises no pump.
21. The blood decarboxylation assembly of claim 19 , wherein the assembly comprises an extra-corporeal pump.
22. The blood decarboxylation assembly of any of claim 19 , further comprising one or more devices selected from the group consisting of a blood oxygenation device, a bubble trap, a flow sensor, a pressure sensor and tubing.
23. A method of treating a patient with lung and/or heart disease, wherein the distal and middle part of a dual lumen cannula assembly is inserted into the body of the patient, and wherein the dual lumen cannula assembly comprises:
(i) a proximal part comprising two tubes: a first tube defining a blood delivery lumen and a second tube defining a blood drainage lumen,
(ii) a mid-portion comprising the two tubes integrated into one body up to a bifurcation in which the first tube and the second tube separate into a first and second distal tube; and
(iii) a distal part comprising the two separate distal tubes,
wherein the first distal tube comprises a trans-septal fixation.