METHODS, DEVICES AND SYSTEMS FOR ACCESSING A HOLLOW ORGAN
The methods, devices and systems described herein relate to accessing a hollow organ with increased accuracy and safety. In one example, they relate to transseptal crossings of the atrial septal wall, preferably from the right atrium into the left atrium. Numerous different devices are described for performing access methods, each of which can be used with a piercing stylet that transitions to an atraumatic configuration after piercing the intervening tissue.
1 . A method for transseptal left atrium access, comprising:
accessing a patient's vasculature percutaneously;
advancing an elongate member through the patient's vasculature and into the right atrium;
adjusting an orientation of the distal end of the elongate member from a first position to a variable second position, wherein the second position is in a desired orientation with respect to a septal wall and is deflected away from the longitudinal axis of the proximal end of the elongate member; and
creating a hole in the septal wall.
2 . A method for transseptal left atrium access, comprising:
accessing a patient's vasculature percutaneously;
advancing a guidewire through the vasculature and into the right atrium; advancing an elongate member along the guidewire into the right atrium;
retracting the guidewire at least partially into the distal end of the elongate member;
adjusting an orientation of the distal end of the elongate member from a first position to a variable second position, wherein the second position is in a desired orientation with respect to a septal wall and is deflected away from the longitudinal axis of the proximal end of the elongate member;
creating a hole in the septal wall; and
advancing the distal end of the delivery device into the hole in the septal wall.
3 . A method for transseptal left atrium access, comprising:
accessing a patient's vasculature percutaneously;
advancing a guidewire through the vasculature and into the right atrium;
advancing an elongate member, with an elongate delivery device, along the guidewire, wherein the elongate member includes an open region proximal to the distal end, and at least one inner lumen;
advancing the delivery device from a first position housed at least partially within the inner lumen of the elongate member to a variable second position, wherein the second position is deflected away from the longitudinal axis of the elongate member and is in a desired orientation with respect to a septal wall, further a distal end of the delivery device is extended through the open region of the elongate member in the second position;
creating a hole in the septal wall; and
advancing the distal end of the delivery device into the hole in the septal wall.
4 .- 13 . (canceled)