Intravascular blood pump system without increased crossing profile due to guide wire
The present invention provides an intravascular blood pump and guide wire and guide wire catheter, the blood pump configured to enter the vasculature at one access site and guide wire catheter and guide wire at a second access site separated from the first access site. The guide wire catheter, or the guide wire, comprise a magnet near a distal end and the blood pump's distal tip comprising a magnet, wherein the magnets align and connect within the vasculature within the iliac artery for further advancement as a connected assembly.
1 . A blood pump system comprising:
a catheter comprising an impeller assembly that includes a housing, the catheter having a flexible distal tip and configured to access a patient's vasculature at a first site:
a magnet disposed at the distal end of the distal tip:
a guide wire extendible within a guide wire catheter, the guide wire catheter configured to access the patient's vasculature at a second site of the patients' vasculature, the guidewire catheter comprising a magnet disposed at or near a distal end of the guide wire catheter:
wherein the magnet of the guide wire catheter and the magnet of the flexible distal tip are configured to connect within the patient's vasculature so that the guide wire catheter impeller assembly can be advanced together along the patient's vasculature to a target location.
2 . The blood pump system of claim 1 , wherein the flexible distal tip is curvilinear.
3 . The blood pump system of claim 2 , wherein the curvilinear flexible distal tip deforms to a more straightened profile after connection of the magnets and advancement toward a target in the patient's vasculature.
4 . A blood pump system comprising:
a catheter comprising an impeller assembly that includes a housing, the catheter having a flexible distal tip and configured to access a patient's vasculature at a first site:
a magnet disposed at the distal end of the distal tip:
a guide wire extendible within a guide wire catheter, the guide wire catheter configured to access the patient's vasculature at a second site of the patient's vasculature, the guidewire comprising a magnet disposed at or near a distal end of the guide wire:
wherein the magnet of the guide wire and the magnet of the flexible distal tip are configured to connect within the patient's vasculature so that the guide wire catheter impeller assembly can be advanced together along a patient's vasculature to a target location.
5 . The blood pump system of claim 4 , wherein the flexible distal tip is curvilinear.
6 . The blood pump system of claim 5 , wherein the curvilinear flexible distal tip deforms to a more straightened profile after connection of the magnets and advancement toward a target in the patient's vasculature.
7 . A delivery method for a ventricular assist blood pump comprising a distal tip that includes a first magnet disposed near a distal end of the distal tip, comprising:
providing a guide wire assembly comprising a guide wire catheter and a guide wire, the guide wire assembly further comprising a second magnet disposed at or near a distal end of the guide wire:
accessing a patient's vasculature with the guide wire assembly at a first access site into a first blood vessel:
accessing the patient's vasculature with the ventricular assist blood pump at a second access site into a second blood vessel:
advancing the guide wire assembly through the first blood vessel and the ventricular assist blood pump through the second blood vessel to a region of convergence between the first and second blood vessels:
connecting the first magnet with the second magnet within the region of convergence:
advancing the connected guide wire catheter and ventricular assist blood pump through the patient's vasculature to a target location; and
disconnecting the magnetically connected guide wire assembly and leaving the ventricular assist blood pump at the target location.
8 . The delivery method of claim 7 , wherein the flexible distal dip comprises an undeformed curvilinear shape.
9 . The delivery method of claim 7 , further comprising advancing the magnetically connected assembly such that the curvilinear distal tip at least partially deforms to at least partially straighten.
10 . The delivery method of claim 9 , wherein the flexible distal dip comprises an undeformed curvilinear shape.
11 . A delivery method for a ventricular assist blood pump comprising a distal tip that includes a first magnet disposed near a distal end of the distal tip, comprising:
providing a guide wire assembly comprising a guide wire catheter and a guide wire, the guide wire assembly further comprising a second magnet disposed at or near a distal end of the guide wire catheter:
accessing a patient's vasculature with the guide wire assembly at a first access site into a first blood vessel:
accessing the patient's vasculature with the ventricular assist blood pump at a second access site into a second blood vessel:
advancing the guide wire assembly through the first blood vessel and the ventricular assist blood pump through the second blood vessel to a region of convergence between the first and second blood vessels:
connecting the first magnet with the second magnet within the region of convergence:
advancing the connected guide wire catheter and ventricular assist blood pump through the patient's vasculature to a target location; and
disconnecting the magnetically connected guide wire assembly and leaving the ventricular assist blood pump at the target location.
12 . The delivery method of claim 11 , further comprising advancing the magnetically connected assembly such that the curvilinear distal tip at least partially deforms to at least partially straighten.