Transseptal left atrial access and septal closure
AssigneeCoAptus Medical Corporation
InventorsDavid Auth, Robert Barry, Robert Schwartz, Robert Van Tassel
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Abstract
Methods, systems, and devices for transseptal access into the left atrium of a heart. In one embodiement an apparatus for transseptal left atrial access comprised of a catheter adapted for insertion into a vessel and one or more RF devices adapted to be extendable from the distal end of said catheter and configured for the penetration or sealing of septal tissue.
Claims29
A method for crossing an interatrial septum of a patient's heart, said method comprising:
- (a) advancing a catheter having an elongated shaft with a proximal portion, a distal portion, and at least one lumen, into a right atrium of the heart;
- (b) locating a fossa ovalis membrane;
- (c) advancing an RF penetrating probe comprising one or more electrodes adjacent to the fossa ovalis;
- and
- (d) energizing the one or more electrodes and creating an opening of a desired pattern and size through the fossa ovalis.
The method of claim 11, wherein the RF penetrating probe is extendable through a distal port located at the distal end of the catheter.
The method of claim 18, wherein the RF penetrating probe is comprised of at least one wire electrode.
A method for penetrating and closing an opening in a atrial septum, said method comprising:
- (a) advancing a catheter having an elongated member with a proximal portion, a distal portion, and one or more lumens, into a right atrium of a patient's heart;
- (b) presenting an RF penetrating probe configured to penetrate tissue and having one or more RF penetrating electrodes disposed thereon;
- (c) energizing the one or more RF penetrating electrodes and creating an opening of a desired pattern and size in the septum;
- (d) presenting an RF sealing probe configured to melt and coagulate tissue and comprising one or more RF sealing electrodes disposed thereon;
- and
- (e) energizing the one or more RF sealing electrode and joining septal tissues cut in step (c) at one or more locations.
A method for penetrating an atrial septum from the right atrium of a patient's heart, said method comprising:
- (a) advancing a distal end of a catheter into a superior vena cava until a distal end of a catheter is resting against a wall of the superior vena cava;
- (b) applying a force to a proximal end of the catheter whereby the distal end of the catheter is moved from the superior vena cava against a wall of the right atrium;
- (c) detecting a movement on the proximal end of the catheter signifying placement of the distal end of the catheter adjacent a fossa ovalis membrane;
- (d) presenting an RF penetrating member comprising one or more RF penetrating electrodes adjacent the fossa ovalis;
- and
- (e) energizing the one or more RF penetrating electrodes thereby creating an opening of a desired pattern and size in the fossa ovalis.
A method for closing a patent foramen ovale (PFO) or other cardiac defects located on an interatrial septum of a patient's heart, said method comprising:
- (a) locating a fossa ovalis membrane;
- (b) crossing the interatrial septum at the fossa ovalis;
- (c) presenting an RF sealing probe comprising one or more RF sealing electrodes;
- and
- (d) energizing the one or more RF sealing electrodes.
A method for treating an aneurismal interatrial septum, said method comprising:
- (a) locating a treatment position on the septum from a right atrium of the heart;
- (b) presenting a distal end of a RF treatment device comprising one or more RF electrodes one or more electrodes adjacent the treatment location;
- (c) energizing the one or more electrodes;
- and
- (d) delivering sufficient energy to the treatment location to cause a heat mediated tissue modification whereby the septum is tightened.
A system for penetrating an atrial septum separating right and left atriums of a heart, said system comprising:
- (a) a catheter configured for delivering an RF penetrating probe into the right atrium and adjacent the septum;
- (b) an RF generator operationally coupled to the RF penetrating probe;
- and wherein the RF penetrating probe configured to deliver sufficient RF energy to tissues of the atrial septum to allow penetrating thereof.
A system for penetrating an atrial septum separating right and left atriums of the heart, said system comprising:
- (a) a catheter configured for delivering an RF penetrating probe and an RF sealing probe into the right atrium and adjacent the septum;
- (b) an RF generator operationally coupled to the RF penetrating probe and the RF sealing probe;
- and
- wherein the RF penetrating probe configured to deliver sufficient RF energy to tissues of the atrial septum creating an opening therethrough;
- and the RF sealing probe configured to deliver sufficient RF energy to the tissues adjacent to the opening to cause coagulation and sealing of the adjacent tissues thereby sealing the opening.
Dependencies are inferred from the claim text.