Mapping and ablation catheter system
OwnerBoaz Avitallinventor
Life of this patent
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Abstract
A recording and ablation catheter method and system for creating linear lesions in an atrial or other chamber of a heart which includes an array of readily controlled electroded arcuate distal working catheter shapes that are easily deployed to contact the inner wall surface of the right atrial cardiac chamber in a manner that enables easy recording and mapping of impulses and thereafter facilitates sustained contact so that linear lesions can be produced from an array of mapping and ablation electrode devices serially spaced along the working catheter shape.
Claims13
A recording and ablation system for accessing a cardiac chamber of interest, mapping electrical activity and creating ablation lesions, including linear lesions in said cardiac chamber of interest comprising:
- (a) a hollow outer catheter or sheath having a distal opening;
- (b) a recording and ablation device located and operable within said outer catheter or sheath and including a flexible distal electroded recording and ablation member extendable to protrude an adjustable amount from a distal opening in said outer catheter or sheath, said electroded device being axially adjustable relative to said sheath;
- (c) wherein said electroded recording and ablation member is in the form of a deployable ribbon loop having adjustable length and having two ends and extending therebetween from said distal opening in said outer catheter or sheath carrying a plurality of serially spaced electrodes electrically isolated from each other and separately electrically connected forming an array thereof;
- and
- (d) wherein the length of said ribbon forming said loop that protrudes from said distal opening is adjustable by varying the length of ribbon deployed.
A recording and ablation system for accessing a cardiac chamber of interest, mapping and creating linear ablation lesions in said cardiac chamber of interest comprising:
- (a) a hollow outer catheter or sheath having a distal opening;
- (b) a mapping and ablation device located and operable within said outer catheter or sheath and including a flexible distal electroded recording and ablation member extendable to protrude an adjustable amount from a distal opening in said outer catheter or sheath, said electroded device being axially adjustable relative to said sheath;
- (c) wherein said electroded recording and ablation member is in the form of a length of deployable ribbon loop carrying a plurality of serially spaced electrodes electrically isolated from each other and separately electrically connected forming an array thereof;
- and
- (d) wherein said loop comprises a pair of segments emerging and extending from said distal opening in said outer catheter or sheath joined by a flexible bridge to form a continuous exposed loop, the segments being in generally back-to-back arrangement thereby describing a loop having an outer and an inner surface, said electrodes being arranged along said outer surface.
Dependencies are inferred from the claim text.