Methods of transvascular retrograde access placement and devices for facilitating the placement
View Patent ↗A system for providing transvascular retrograde access in a central blood vessel of a patient. In some embodiments, the system has a handle; a catheter extending from the handle; and a tissue piercing element extending from the handle through the catheter, the tissue piercing element having a sharp distal tip adapted to extend from a distal portion of the catheter, the catheter and handle being adapted to be separated from the tissue piercing element, a distal portion of the tissue piercing element being adapted to serve as a guide for introduction of a device into the central blood vessel. The invention also includes a method of providing transvascular retrograde access to a central blood vessel of a patient.
1. A method of providing transvascular retrograde access to a central blood vessel of a patient, the method comprising:
inserting a distal end of a catheter into a blood vessel other than the central blood vessel,
a proximal end of the catheter being connected to a handle disposed outside of the patient;
advancing the distal end of the catheter into the central blood vessel;
orienting the distal end of the catheter to an exit location within the central blood vessel;
actuating a tissue piercer actuator of the handle to advance a tissue piercing element from the catheter through the central blood vessel at the exit location;
introducing a device over the tissue piercing element through the exit location into the central blood vessel; and
wherein actuating the tissue piercer actuator comprises releasing a spring within the handle, further comprising actuating a spring release element to release the spring.
2. The method of claim 1 wherein orienting comprises rotating the catheter with respect to the patient.
3. The method of claim 2 wherein rotating comprises rotating the handle and catheter together.
4. The method of claim 1 wherein orienting comprises bending the distal end of the catheter with respect to a longitudinal axis of the catheter.
5. The method of claim 4 wherein bending comprises moving a bending actuator of the handle.
6. The method of claim 4 further comprising preventing actuation of the tissue piercer actuator if catheter distal end is not bent.
7. The method of claim 1 further comprising changing an interlock from a first state to a second state to permit the tissue piercer actuator to be actuated.
8. The method of claim 1 further comprising locking the tissue piercing element to the tissue piercer actuator prior to actuating the tissue piercing actuator.
9. A method of providing transvascular retrograde access to a central blood vessel of a patient, the method comprising:
inserting a distal end of a catheter into a blood vessel other than the central blood vessel,
a proximal end of the catheter being connected to a handle disposed outside of the patient;
advancing the distal end of the catheter into the central blood vessel;
orienting the distal end of the catheter to an exit location within the central blood vessel;
actuating a tissue piercer actuator of the handle by releasing a spring within the handle to advance a tissue piercing element from the catheter through the central blood vessel at the exit location; and
introducing a device over the tissue piercing element through the exit location into the central blood vessel.
10. The method of claim 9 wherein orienting comprises rotating the catheter with respect to the patient.
11. The method of claim 10 wherein rotating comprises rotating the handle and catheter together.
12. The method of claim 9 wherein orienting comprises bending the distal end of the catheter with respect to a longitudinal axis of the catheter.
13. The method of claim 12 wherein bending comprises moving a bending actuator of the handle.
14. The method of claim 12 further comprising preventing actuation of the tissue piercer actuator if catheter distal end is not bent.
15. The method of claim 9 further comprising changing an interlock from a first state to a second state to permit the tissue piercer actuator to be actuated.
16. The method of claim 9 further comprising locking the tissue piercing element to the tissue piercer actuator prior to actuating the tissue piercing actuator.