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US 8,506,553 B2Granted
Coronary sinus lead delivery catheter
AssigneeCardiac Pacemakers, Inc.
InventorEric T. Johnson
Life of this patent
Estimating the term…
Abstract
A guide catheter assembly includes an outer guide catheter and an inner catheter slidably and rotatably disposed in the outer guide catheter. The outer guide catheter has a proximal portion and a distal portion formed into a preformed shape including a curved segment. 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 guide catheter assembly comprising:
- an outer guide catheter including:
- a flexible elongate shaft having a proximal portion and a distal portion terminating in a distal tip, and a lumen extending through the proximal portion and the 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 when locating an ostium of the coronary sinus with the distal tip, 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;
- and
- an inner catheter slidably and rotatably disposed in the lumen of the outer guide catheter, the inner catheter having a preformed distal end extendable distally beyond the distal tip of the outer guide catheter.
6 more elements
A guide catheter assembly comprising:
- an outer guide catheter including:
- a flexible elongate shaft having a proximal portion and a distal portion terminating in a distal tip, and a lumen extending through the proximal portion and the distal tip, the distal portion having a preformed size and shape configured so 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 of 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;
- and
- an inner catheter slidably and rotatably disposed in the lumen of the outer guide catheter, the inner catheter having a preformed distal end extendable distally beyond the distal tip of the outer guide catheter.
6 more elements
A guide catheter assembly comprising:
- an outer guide catheter including a flexible elongate shaft having a generally straight proximal portion and a pre-formed distal portion extending distally from the proximal portion and terminating in a distal tip, and a lumen extending through the proximal portion and the distal tip, the pre-formed distal portion having a size and shape defined by at least a proximal first arc segment, a second arc segment distal to the first arc segment, and a third arc segment distal to the second arc segment, wherein the first arc segment has a larger arc radius than the second arc segment and the third arc segment, and wherein the size and shape of the pre-formed distal portion of the shaft are selected such that the pre-formed distal portion of the shaft is supported on a wall of the superior vena cava when locating an ostium of the coronary sinus with the distal tip;
- and
- an inner catheter slidably and rotatably disposed in the lumen of the outer guide catheter, the inner catheter having a pre-formed distal end extendable distally beyond the distal tip of the outer guide catheter.
Dependencies are inferred from the claim text.