Abstract: A catheter assembly comprises a first elongate tubular member having a proximal end portion defining a proximal end, a distal end portion having an opening therein and defining a distal end, and at least one lumen defined between the proximal end and the distal end. A second elongate tubular member has a proximal end portion defining a proximal end, a distal end portion defining a distal end, and at least one lumen defined between the proximal end and the distal end. The second elongate tubular member is received within the at least one lumen of the first elongate tubular member, such that the distal end portion of the second elongate tubular member projects from the opening in the distal end portion of the first elongate tubular member. An elongate, shape-imparting element is receivable in the at least one lumen of at least one of the first elongate tubular member and the second elongate tubular member.

Abstract: A catheter sheath for an irrigation catheter comprises an elongate member having a proximal end and a distal end and defining a lumen extending from the proximal end to the distal end. At least one electrode is arranged on the elongate member. A plurality of elongate elements are contained in the elongate member, the elongate elements comprising at least one electrical conductor and at least one element of a non-conductive material arranged adjacent the at least one electrical conductor to form at least one non-conductive region associated with the elongate member. At least one passage extends through a wall of the elongate member to intersect the non-conductive region and to be in communication with the lumen of the elongate member. The at least one passage has an outlet opening in, or adjacent, the at least one electrode.

Abstract: A catheter assembly comprises a first elongate tubular member having a proximal end portion defining a proximal end, a distal end portion having an opening therein and defining a distal end, and at least one lumen defined between the proximal end and the distal end. A second elongate tubular member has a proximal end portion defining a proximal end, a distal end portion defining a distal end, and at least one lumen defined between the proximal end and the distal end. The second elongate tubular member is received within the at least one lumen of the first elongate tubular member, such that the distal end portion of the second elongate tubular member projects from the opening in the distal end portion of the first elongate tubular member. An elongate, shape-imparting element is receivable in the at least one lumen of at least one of the first elongate tubular member and the second elongate tubular member.

Abstract: A catheter assembly comprises a first elongate tubular member having a proximal end portion defining a proximal end, a distal end portion having an opening therein and defining a distal end, and at least one lumen defined between the proximal end and the distal end. A second elongate tubular member has a proximal end portion defining a proximal end, a distal end portion defining a distal end, and at least one lumen defined between the proximal end and the distal end. The second elongate tubular member is received within the at least one lumen of the first elongate tubular member, such that the distal end portion of the second elongate tubular member projects from the opening in the distal end portion of the first elongate tubular member. An elongate, shape-imparting element is receivable in the at least one lumen of at least one of the first elongate tubular member and the second elongate tubular member.

Abstract: A catheter sheath for an irrigation catheter comprises an elongate member having a proximal end and a distal end and defining a lumen extending from the proximal end to the distal end. At least one electrode is arranged on the elongate member. A plurality of elongate elements are contained in the elongate member, the elongate elements comprising at least one electrical conductor and at least one element of a non-conductive material arranged adjacent the at least one conductor to form at least one non-conductive region associated with the elongate member. At least one passage extends through a wall of the elongate member to intersect the non-conductive region and to be in communication with the lumen of the elongate member. The at least one passage has an outlet opening in, or adjacent, the at least one electrode.

Abstract: An electrically conductive member includes an elongate body, which has at least one electrically conductive region. The electrically conductive region comprises a porous polymeric material coated with an electrically conductive material. A method of manufacturing the electrically conductive member includes the steps of extruding an elongate body of polymeric material, wherein at least one region of the elongate body is porous in nature; and coating the elongate body with an electrically conductive material, such that the electrically conductive material substantially coats the pores of the at least one region.

Abstract: A catheter assembly 10 comprises a first elongate tubular member 12 having a proximal end portion 14 defining a proximal end 15, a distal end portion 18 having an opening therein 20 and defining a distal end 22, and at least one lumen 24 defined between the proximal end 15 and the distal end 22. A second elongate tubular member 26 has a proximal end portion 28 defining a proximal end 30, a distal end portion 32 defining a distal end 34, and at least one lumen 36 defined between the proximal end 30 and the distal end 34. The second elongate tubular member 26 is received within the at least one lumen 24 of the first elongate tubular member 12, such that the distal end portion 32 of the second elongate tubular member 26 projects from the opening 20 in the distal end portion 18 of the first elongate tubular member 12 An elongate, shape-imparting element 38 is receivable in the at least one lumen 24, 36 of at least one of the first elongate tubular member 12 and the second elongate tubular member 26.

Abstract: A multi-electrode lead comprises an elongate carrier having a longitudinal axis. A plurality of electrical conductors is carried by the carrier, a plurality of electrodes being connected in spaced relationship to each conductor. The electrodes are arranged at axially spaced intervals along the carrier so that, along the length of the carrier, any one electrode associated with any one of the conductors only once has an electrode associated with another one of the conductors adjacent to that any one electrode. In another aspect of the invention, an ablating device comprises an elongate tubular sleeve for effecting spot ablation of tissue, a sensing electrode catheter being receivable in a passage of a sleeve for assisting in positioning of an ablating electrode, in use. Preferably, the sensing electrode catheter is the multi-electrode lead of the first aspect of the invention.

Abstract: An electrically conductive member (10) includes an elongate body (11) which has at least one electrically conductive region (20). The electrically conductive region (20) comprises a porous polymeric material coated with an electrically conductive material. A method of manufacturing the electrically conductive member (10) includes the steps of extruding an elongate body of polymeric material wherein at least one region of the elongate body is porous in nature; and coating said elongate body with an electrically conductive material such that the electrically conductive material substantially coats the pores of said at least one region.

Abstract: An electrically conductive member (10) includes an elongate body (11) which has at least one electrically conductive region (20). The electrically conductive region (20) comprises a porous polymeric material coated with an electrically conductive material. A method of manufacturing the electrically conductive member (10) includes the steps of extruding an elongate body of polymeric material wherein at least one region of the elongate body is porous in nature; and coating said elongate body with an electrically conductive material such that the electrically conductive material substantially coats the pores of said at least one region.

Abstract: An electrically conductive member (10) includes an elongate body (11) which has at least one electrically conductive region (20). The electrically conductive region (20) comprises a porous polymeric material coated with an electrically conductive material. A method of manufacturing the electrically conductive member (10) includes the steps of extruding an elongate body of polymeric material wherein at least one region of the elongate body is porous in nature; and coating said elongate body with an electrically conductive material such that the electrically conductive material substantially coats the pores of said at least one region.

Abstract: A multi-electrode lead (10) comprises an elongate carrier (12) having a longitudinal axis. A plurality of electrical conductors is carried by the carrier (12), a plurality of electrodes being connected in spaced relationship to each conductor. The electrodes (14) are arranged at axially spaced intervals along the carrier (12) so that, along the length of the carrier (12), any one electrode (14) associated with any one of the conductors only once has an electrode (14) associated with another one of the conductors adjacent to that any one electrode (14). In another aspect of the invention, an ablating device (50) comprises an elongate tubular sleeve (52) for effecting spot ablation of tissue, a sensing electrode catheter being receivable in the passage (54) of the sleeve (52) for assisting in positioning of the ablating electrode (56), in use Preferably, the sensing electrode catheter is the multi-electrode lead (10) of the first aspect of the invention.

Abstract: A multi-electrode lead (10) comprises an elongate carrier (12) having a longitudinal axis. A plurality of electrical conductors is carried by the carrier (12), a plurality of electrodes being connected in spaced relationship to each conductor. The electrodes (14) are arranged at axially spaced intervals along the carrier (12) so that, along the length of the carrier (12) electrode (14) associated with any one of the conductors only once has an electrode (14) associated with another one of the conduct adjacent to that any one electrode (14). In another aspect of the invention, an ablating device (50) comprises an elongate tubular sleeve (52) for effecting spot ablation of tissue, a sensing electrode catheter being receivable in the passage (54) of the sleeve for assisting in positioning of the ablating electrode (56), in use Preferably, the sensing electrode catheter is the multi-electrode lead (10) of the first aspect of the invention.