Loading guide lumen
An apparatus is disclosed including: an intracardiac pump device having a path for a guidewire extending through the pump device from a first opening to a second opening; and a lumen which extends from a first end located outside of the pump device, into the pump device through the first opening in the pump device, along the path for the guidewire, out of the pump device through the second opening, and to a second end located outside of the pump device. The lumen is configured to receive the guidewire such that when the guidewire passes through the lumen from the first end to the second end, the guidewire is positioned along the path.
1. A method comprising the steps of:
passing a guidewire through a tubular lumen from a first end of the tubular lumen to a second end of the tubular lumen, the tubular lumen positioned in a blood pump assembly, the blood pump assembly comprising:
a cannula having a proximal end and a distal end;
a suction head positioned distal to the distal end of the cannula;
an outlet opening proximal of the proximal end of the cannula; and
a flexible tubular extension positioned distal to the suction head, the flexible tubular extension having a through lumen and a pigtail tip, wherein the tubular lumen is positioned such that the first end of the tubular lumen is located outside of the outlet opening, a portion of the tubular lumen extends within the cannula, and the second end of the tubular lumen is located outside of the flexible tubular extension;
removing the tubular lumen from the blood pump assembly while leaving the guidewire, such that the guidewire extends through the outlet opening, through the cannula, and through the flexible tubular extension; and
after removing the tubular lumen, introducing the blood pump assembly into a subject using the guidewire.
2. The method of claim 1 , wherein the blood pump assembly is introduced using fluoroscopy.
3. The method of claim 1 , further comprising positioning the blood pump assembly in the subject, wherein the positioning the blood pump assembly is verified by pressure monitoring using a pressure lumen.
4. The method of claim 3 , wherein the blood pump assembly is positioned in an aortic valve of the subject.
5. The method of claim 4 , wherein the cannula of the blood pump assembly is positioned in the aortic valve of the subject.
6. The method of claim 5 , further comprising removing the guidewire from the blood pump assembly.
7. The method of claim 6 , further comprising operating the blood pump assembly.
8. The method of claim 1 , wherein the tubular lumen extends through the pigtail tip and exits a distal end of the pigtail tip.
9. The method of claim 1 , wherein the tubular lumen further extends through the suction head.
10. The method of claim 1 , wherein the blood pump assembly further comprises a drive portion and a pump portion, the drive portion being coaxial with the pump portion.
11. The method of claim 10 , wherein the blood pump assembly further comprises a catheter positioned proximal to a proximal end of the drive portion.