Coronary sinus lead delivery catheter
AssigneeCardiac Pacemakers, Inc.
InventorEric T. Johnson
Life of this patent
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Abstract
A method of cannulating the coronary sinus or accessing a side branch of the coronary sinus of a patient's heart using a guide catheter. The guide catheter has a proximal portion and a distal portion formed into a preformed shape configured such that the distal portion of the shaft is supported on a wall of the superior vena cava during insertion of the distal portion into the coronary sinus. The preformed shape includes a first arc, a second arc, a third arc, a fourth arc, and a generally straight terminal portion. The preformed shape is generally a J-shape, having a terminal portion generally parallel to the proximal portion, a generally closed arc or a generally open arc.
Claims20
A method of cannulating a coronary sinus of a patient's heart, the heart characterized at least in part by a right atrium including an ostium of the coronary sinus, the method comprising:
- advancing a guide catheter within the patient's vasculature and into the right atrium via a superior vena cava, the guide catheter including a flexible elongate shaft having a proximal portion and a distal portion terminating in a distal tip, the distal portion having a preformed shape configured such that the distal portion of the shaft is supported on a wall of the superior vena cava during insertion of the distal portion into the coronary sinus, the preformed shape of the distal portion lying in a single plane and having an overall length from approximately 4.2 to approximately 11.81 inches and including at least:
- a first arc segment having a first arc radius ranging from approximately 3 to approximately 4 inches;
- a second arc segment having a second arc radius ranging from approximately 1.2 to approximately 1.8 inches;
- a third arc segment having a third arc radius ranging from approximately 2.2 to approximately 3.7 inches;
- and
- a generally straight terminal portion distal to the third arc segment and having a length of up to approximately 1.81 inches;
- inserting the distal tip into and through the ostium of the coronary sinus while supporting the shaft on a wall of the superior vena cava;
- and
- advancing the distal tip distally into the coronary sinus.
A method of delivering a pacing lead to a side branch of a coronary sinus of a patient's heart, the heart including a right atrium including an ostium of the coronary sinus, the method comprising:
- advancing a guide catheter within the patient's vasculature and into the right atrium via a superior vena cava, the guide catheter including a flexible elongate shaft having a proximal portion and a distal portion terminating in a distal tip, the distal portion having a preformed shape configured such that the distal portion of the shaft is supported on a wall of the superior vena cava during insertion of the distal portion into the coronary sinus, the preformed shape of the distal portion lying in a single plane and having an overall length from approximately 4.2 to approximately 11.81 inches and including at least:
- a first arc segment having a first arc radius ranging from approximately 3 to approximately 4 inches;
- a second arc segment having a second arc radius ranging from approximately 1.2 to approximately 1.8 inches;
- a third arc segment having a third arc radius ranging from approximately 2.2 to approximately 3.7 inches;
- and
- a generally straight terminal portion distal to the third arc segment and having a length of up to approximately 1.81 inches;
- inserting the distal tip into and through the ostium of the coronary sinus while supporting the shaft on the wall of the superior vena cava;
- advancing the distal tip distally into the coronary sinus;
- advancing the pacing lead through the guide catheter to a location within the side branch;
- and
- removing the guide catheter by withdrawing the guide catheter proximally over the pacing lead.
A method of accessing a side branch of a coronary sinus of a patient's heart, the heart including a right atrium including an ostium of the coronary sinus, the method comprising:
- advancing a guide catheter within the patient's vasculature and into the right atrium via a superior vena cava, the guide catheter including a flexible elongate shaft having a proximal portion and a distal portion terminating in a distal tip, the distal portion having a preformed shape configured such that the distal portion of the shaft is supported on a wall of the superior vena cava during insertion of the distal portion into the coronary sinus, the preformed shape of the distal portion lying in a single plane and having an overall length from approximately 4.2 to approximately 11.81 inches and including at least:
- a first arc segment having a first arc radius ranging from approximately 3 to approximately 4 inches;
- a second arc segment having a second arc radius ranging from approximately 1.2 to approximately 1.8 inches;
- a third arc segment having a third arc radius ranging from approximately 2.2 to approximately 3.7 inches;
- and
- a generally straight terminal portion distal to the third arc segment and having a length of up to approximately 1.81 inches;
- inserting the distal tip into and through the ostium of the coronary sinus while supporting the shaft on the wall of the superior vena cava;
- advancing the distal tip distally into the coronary sinus;
- advancing an inner catheter through the guide catheter;
- sub-select the side branch with the inner catheter;
- and
- advancing the guide catheter over the inner catheter and into the side branch.
Dependencies are inferred from the claim text.