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US 5,722,400 AGranted
Guiding introducers for use in the treatment of left ventricular tachycardia
AssigneeDaig Corporation
InventorsJohn D. Ockuly, James A. Hassett
Life of this patent
Estimating the term…
Abstract
A process for the treatment of ventricular tachycardia in the left ventricle using a retrograde approach by use of ablation and/or mapping catheters guided by precurved guiding introducers. Also disclosed are predetermined shapes for the guiding introducers to be used for the treatment of ventricular tachycardia in the left ventricle using a retrograde approach.
Claims14
A process for the treatment of ventricular tachycardia within the left ventricle of a human heart comprising
- (a) introducing into the left ventricle a guiding introducer, wherein said guiding introducer contains a lumen running lengthwise therethrough, a proximal and a distal end, and is comprised of preselected, shaped first, second and third sections, wherein a portion of the preselected sections of the guiding introducer is held in place by the anatomy of the left ventricle,
- (b) introducing into the lumen of the guiding introducer an ablation or mapping catheter containing a proximal and distal end, wherein said catheter has one or more electrodes located at or near the distal end of the catheter,
- (c) guiding the catheter to a preselected location within the left ventricle by use of the guiding introducer, and
- (d) mapping or ablating the preselected location within the left ventricle of the heart by use of the electrodes of the catheter.
1 more element
A process for the treatment of ventricular tachycardia within the left ventricle of the heart comprising
- (a) introducing into the left ventricle a guiding introducer, wherein said guiding introducer contains a lumen running lengthwise therethrough, a proximal and a distal end and comprises preselected, shaped first, second and third sections, wherein a portion of the preselected sections of the guiding introducer is held in place by the anatomy of the left ventricle, wherein the first section is a generally elongated straight section, wherein the second section contains a curved portion with a radius of about 1.0 to about 2.0 inches and an arc of the curved portion from about 190 to about 230 degrees, and wherein the third section contains a straight portion and a second curved portion, wherein the straight portion is from about 1.0 to about 2.5 inches in length, wherein the second curved portion has a radius of about 0.5 to about 1.5 inches with an arc of about 70 to about 110 degrees, wherein the second curved portion is within about 45 degrees of being in a plane formed by the first and second sections, and wherein the second curved portion is directed generally away from the first section,
- (b) introducing into the lumen of the guiding introducer an ablation or mapping catheter containing a proximal and a distal end, wherein said catheter has one or more electrodes located at or near the distal end of the catheter,
- (c) guiding the catheter to a preselected location within the left ventricle by use of the guiding introducer, and
- (d) mapping and ablating the preselected location within the left ventricle by use of the electrodes of the catheter.
1 more element
Dependencies are inferred from the claim text.