Ablation catheter
AssigneeCathRx Ltd
InventorsNeil L. Anderson, Evan Chong
Life of this patent
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Abstract
An ablation catheter 10 includes an elongate carrier 12. A first loop 14.1 is arranged at, or adjacent, a distal end of the carrier 12. At least one sensing electrode 40 is carried on the first loop 14.1 for sensing irregular electrical activity in a patient's body. At least one further loop 14.2 is arranged proximally relative to the first loop 14.1 on the carrier 12 in a fixed orientation relative to the first loop 14.1. At least one ablating electrode 42 is carried on the second loop 14.2 for ablating a site of the patient's body where irregular electrical activity occurs.
Claims20
An ablation catheter which includes:
- an elongate carrier including a tubular member;
- a first loop arranged at, or adjacent, a distal end of the carrier;
- at least one sensing electrode carried on the first loop for sensing irregular electrical activity in a patient's body;
- at least one further loop arranged proximally relative to the first loop on the carrier in a fixed orientation relative to the first loop;
- and
- at least one ablating electrode carried on the at least one further loop for ablating a site of the patient's body where irregular electrical activity occurs, the tubular member of the elongate carrier being folded back on itself to form a distal hairpin and a pair of limbs extending from the hairpin, the limbs having a pair of proximal ends, the loops being carried on the limbs and a size of the loops being adjustable independently of one another by appropriate manipulation of the proximal end of at least one of the limbs.
An ablation catheter which includes
- an elongate carrier comprising a tubular member defining a lumen;
- electrical conductors arranged about a part of the tubular member defining the lumen and the conductors being covered with a coating of an insulating material so that the conductors are embedded in a wall of the tubular member and the coating defines an outer periphery of the tubular member, the elongate carrier having a loop defined at a distal end, the loop comprising a first arm and a second arm, the arms of the loop being electrically isolated with respect to each other;
- and
- at least one electrode arranged on each arm of the loop on the outer periphery of the tubular member and the at least one electrode being in electrical communication with at least one of the conductors by removal of a part of the coating of insulating material and the at least one electrode overlying the outer periphery of the tubular member, the tubular member being folded back on itself to form a distal hairpin and a pair of limbs extending from the hairpin, each limb having a proximal end, the arms of the loop being defined by distal portions of the limbs on opposite sides of the hairpin.
An ablation catheter which includes
- an elongate carrier comprising a tubular member defining a lumen and electrical conductors arranged in the tubular member, the carrier having a loop defined at a distal end, the loop comprising a first arm and a second arm, the arms of the loop being electrically isolated with respect to each other to isolate conductors associated with the first arm of the loop from conductors associated with the second arm of the loop;
- and
- a plurality of electrodes arranged about the loop, the tubular member being folded back on itself to form a distal hairpin and a pair of limbs extending from the hairpin, each limb having a proximal end, the arms of the loop being defined by distal portions of the limbs on opposite sides of the hairpin, the electrical isolation of the arms of the loop doubling the number of conductors associated with the loop and doubling the number of electrodes arranged about the loop.
Dependencies are inferred from the claim text.