Abstract: An electrical lead for a catheter includes an elongate member of non-conductive material having a proximal end and a distal end and defining a lumen extending from the proximal end to the distal end. The elongate member further includes a tubular member of non-conductive material, a braid of conductive material applied over the tubular member, an intermediate layer of non-conductive material applied over the braid, a plurality of electrical conductors extending from the proximal end to the distal end laid on the intermediate layer, and an outer layer of non-conductive material applied over the electrical conductors to cover the conductors. At least one electrode is arranged on the outer surface of the elongate member in electrical communication with at least one of the plurality of electrical conductors through the outer layer. The braid underlies the at least one electrode but is insulated from the at least one electrode by the intermediate non-conductive layer.

Abstract: Catheter lead for a procedure comprising a tubular member with at least one conductive wire. The tubular member having a proximal end and a distal end with the distal end of the catheter comprising at least one electrode in communication with the conductive wire and wherein the at least one electrode comprises a conductive polymeric material.

Abstract: An ablation catheter includes a control handle and a catheter sheath removably connectable to the control handle, the catheter sheath defining a fluid lumen and having a plurality of perforations proximal the distal end of the catheter sheath. The ablation catheter further includes a shape-imparting element inserted into the fluid lumen of the catheter sheath and removably connectable to the control handle. The shape-imparting element is connectable to an RF energy source so that, in use, the shape-imparting elements act as an electrode charging fluid into the fluid lumen to be expelled through the plurality of perforations on the catheter sheath.

Abstract: A double loop catheter for delivering ablation energy, the catheter comprising a catheter sheath having a proximal end, a distal end and at least one lumen extending therethrough and having a first loop structure having a proximal end and a distal end, and a second loop structure having a proximal end and a distal end. The first loop structure and the second loop structure are receivable in the at least one lumen of the catheter sheath, and the first loop structure and the second loop structure are configurable to extend distally of the distal end of the catheter sheath. The first loop structure comprises a first electrode near to the distal end of the first loop structure and the second loop structure comprises a second electrode near to the distal end of the second loop structure, wherein the first loop structure and the second loop structure are displaceable relative to each other.

Abstract: A catheter handle assembly comprising a handle body with a proximal end and a distal end with a passage extending therebetween. An adjustment unit disposed in the passage of the handle body and the adjustment unit comprising a gear mechanism that acts on the on a deflection stylet for adjusting deflection of the distal part of the deflection stylet. The gear mechanism comprises a first rack, a second rack and a pinion such that rotation of the pinion causes relative movement of the first rack and the second rack in opposing directions.

Abstract: A sheath adapted for use with a catheter is disclosed comprising an electrical lead having a proximal end and a distal end and a lumen extending from the proximal end to the distal end, the electrical lead including a tubular member of non-conductive material. At least a first set of electrical conductors and a second set of electrical conductors extend from the proximal end to the distal end laid on the non-conductive tubular member, and an outer layer of non-conductive material is applied over the electrical conductors to cover the conductors. One or more electrodes are disposed on a distal portion of the sheath. Each electrode is in electrical communication with at least one of the electrical conductors through the outer layer. The first set of electrical conductors is helically wrapped around the lumen and the second set of electrical conductors is helically wrapped around the first set of electrical conductors.

Abstract: An ablation catheter, wherein the catheter includes: a flexible elongated member having a proximal end and a distal end, wherein the elongated member defines an irrigation lumen along its length and the elongated member encapsulates at least one wire; and wherein at least one electrode is attached to the outer surface of the elongated member near to the distal end and the at least one electrode is electrically connected to at least one wire and wherein the at least one electrode includes a plurality of holes that is in fluid communication with the irrigation lumen.

Abstract: A catheter sheath for a basket catheter that includes a plurality of electrical leads, each having a proximal end and a distal end and a lumen extending from the proximal end to the distal end. Each electrical lead includes a tubular member of non-conductive material, a plurality of electrical conductors extending from the proximal end to the distal end laid on the non-conductive tubular member, and an outer layer of non-conductive material applied over the electrical conductors to cover the conductors. The catheter sheath further includes one or more electrodes on a distal portion of each electrical lead in electrical communication with at least one of the plurality of electrical conductors through the outer layer. An elongate shape-forming member is received in the lumen of each of the plurality of electrical leads. The shape-forming member imparts an arched shape to the distal portion of each of the electrical leads so as to form a basket shape to a distal portion of the catheter sheath.

Abstract: An electrical lead for a catheter includes an elongate member of non-conductive material having a proximal end and a distal end and defining a lumen extending from the proximal end to the distal end. The elongate member further includes a tubular member of non-conductive material, a braid of conductive material applied over the tubular member, an intermediate layer of non-conductive material applied over the braid, a plurality of electrical conductors extending from the proximal end to the distal end laid on the intermediate layer, and an outer layer of non-conductive material applied over the electrical conductors to cover the conductors. At least one electrode is arranged on the outer surface of the elongate member in electrical communication with at least one of the plurality of electrical conductors through the outer layer. The braid underlies the at least one electrode but is insulated from the at least one electrode by the intermediate non-conductive layer.

Abstract: An ablation catheter includes a control handle and a catheter sheath removably connectable to the control handle, the catheter sheath defining a fluid lumen and having a plurality of perforations proximal the distal end of the catheter sheath. The ablation catheter further includes a shape-imparting element inserted into the fluid lumen of the catheter sheath and removably connectable to the control handle. The shape-imparting element is connectable to an RF energy source so that, in use, the shape-imparting elements act as an electrode charging fluid into the fluid lumen to be expelled through the plurality of perforations on the catheter sheath.

Abstract: An ablation catheter including a handle, a tubular irrigation member defining a fluid lumen and having a plurality of perforations proximal the distal end of the tubular irrigation member. At least one ablation electrode is arranged at the distal end of an elongate tubular sheath inserted into the lumen of the tubular irrigation member, the elongate tubular sheath being axially displaceable within the lumen of the tubular irrigation member. The ablation catheter may also include two ablation electrodes each attached to an elongate tubuar sheath which are telescopically arranged within the tubular irrigation member. The ablation electrodes may be displaceable simultaneously together or individually.

Abstract: A modular catheter comprises a tubular sheath module having one or more electrodes attached to the distal end of the tubular sheath and an elongate shape-imparting mechanism module. The shape-imparting mechanism module is removably received within a lumen defined by the tubular member. The tubular sheath module and the shape-imparting mechanism module are releasably connectable to a handle module. The handle comprises a plurality of wall members defining a cavity housing one or more modules releasably connected to the handle and accessible by at least partially separating the wall members. The tubular sheath, the shape-imparting mechanism module and the handle are replaceable independently and can be sterilized for subsequent use.