Abstract: A medical device comprising an elongate body having a proximal portion, a distal portion, a distal end, a longitudinal axis, and a radius, a plurality of deployable arms, the deployable arms being movably coupled to the elongate body, and at least one arm from the plurality of deployable arms having at least one electrically conductive surface. The plurality of deployable arms being movable from a collapsed configuration to an expanded configuration. In the collapsed configuration, the plurality of deployable arms are approximately parallel to the longitudinal axis. In the expanded configuration, the at least one electrically conductive surface is distal facing and is positioned radially from the longitudinal axis by a distance that is greater than the radius of the elongate body.

Abstract: A medical device comprising an elongate body having a proximal portion, a distal portion, a distal end, a longitudinal axis, and a radius, a plurality of deployable arms, the deployable arms being movably coupled to the elongate body, and at least one arm from the plurality of deployable arms having at least one electrically conductive surface. The plurality of deployable arms being movable from a collapsed configuration to an expanded configuration. In the collapsed configuration, the plurality of deployable arms are approximately parallel to the longitudinal axis. In the expanded configuration, the at least one electrically conductive surface is distal facing and is positioned radially from the longitudinal axis by a distance that is greater than the radius of the elongate body.

Abstract: A medical system, including a medical device having a plurality of deployable arms, and at least one electrode on at least one of the plurality of arms; and an electric signal generator in communication with the medical device, the electric signal generator programmed to deliver pulsed energy to the medical device sufficient to induce irreversible electroporation ablation.

Abstract: A medical device comprising an elongate body having a proximal portion, a distal portion, a distal end, a longitudinal axis, and a radius, a plurality of deployable arms, the deployable arms being movably coupled to the elongate body, and at least one arm from the plurality of deployable arms having at least one electrically conductive surface. The plurality of deployable arms being movable from a collapsed configuration to an expanded configuration. In the collapsed configuration, the plurality of deployable arms are approximately parallel to the longitudinal axis. In the expanded configuration, the at least one electrically conductive surface is distal facing and is positioned radially from the longitudinal axis by a distance that is greater than the radius of the elongate body.

Abstract: A medical system, including a medical device having a plurality of deployable arms, and at least one electrode on at least one of the plurality of arms; and an electric signal generator in communication with the medical device, the electric signal generator programmed to deliver pulsed energy to the medical device sufficient to induce irreversible electroporation ablation.

Abstract: A medical system, including a medical device having a plurality of deployable arms, and at least one electrode on at least one of the plurality of arms; and an electric signal generator in communication with the medical device, the electric signal generator programmed to deliver pulsed energy to the medical device sufficient to induce irreversible electroporation ablation.

Abstract: A medical system, including a catheter body, an elongate body disposed in the catheter body; an expandable element having a proximal portion coupled to the catheter body and a distal portion coupled to the elongate body, the distal portion of the expandable element defining the distal-most portion of the medical device; a mesh or array of longitudinal splines substantially surrounding the expandable element, at least a portion of the mesh or splines being electrically conductive; and a coolant source in fluid communication with the expandable element.

Abstract: A medical system, including a catheter body, an elongate body disposed in the catheter body; an expandable element having a proximal portion coupled to the catheter body and a distal portion coupled to the elongate body, the distal portion of the expandable element defining the distal-most portion of the medical device; a mesh or array of longitudinal splines substantially surrounding the expandable element, at least a portion of the mesh or splines being electrically conductive; and a coolant source in fluid communication with the expandable element.

Abstract: A medical system, including a catheter body, an elongate body disposed in the catheter body; an expandable element having a proximal portion coupled to the catheter body and a distal portion coupled to the elongate body, the distal portion of the expandable element defining the distal-most portion of the medical device; a mesh or array of longitudinal splines substantially surrounding the expandable element, at least a portion of the mesh or splines being electrically conductive; and a coolant source in fluid communication with the expandable element.

Abstract: A medical system, including a medical device having a plurality of deployable arms, and at least one electrode on at least one of the plurality of arms; and an electric signal generator in communication with the medical device, the electric signal generator programmed to deliver pulsed energy to the medical device sufficient to induce irreversible electroporation ablation.

Abstract: An implantable medical device system includes a medical electrical lead having a connector assembly and a connector bore for receiving the lead connector assembly. The lead includes a distal portion having a first outer diameter and a distal sealing member, an intermediate portion having a second outer diameter smaller than the first outer diameter, and a connector pin extending from the intermediate portion, the connector pin having an outer diameter corresponding to a DF-1 standard.

Abstract: A medical electrical lead component includes a groove formed in a surface of the component. The medical electrical lead includes a portion of a conductor positioned within the groove and a resistance weld formed between the portion of the conductor positioned within the groove and the component. In one embodiment, the portion of the conductor positioned within the groove includes a pre-weld diameter greater than the depth of the groove.

Abstract: A medical system, including a medical device having a plurality of deployable arms, and at least one electrode on at least one of the plurality of arms; and an electric signal generator in communication with the medical device, the electric signal generator programmed to deliver pulsed energy to the medical device sufficient to induce irreversible electroporation ablation.

Abstract: A medical system, including a catheter body, an elongate body disposed in the catheter body; an expandable element having a proximal portion coupled to the catheter body and a distal portion coupled to the elongate body, the distal portion of the expandable element defining the distal-most portion of the medical device; a mesh or array of longitudinal splines substantially surrounding the expandable element, at least a portion of the mesh or splines being electrically conductive; and a coolant source in fluid communication with the expandable element.

Abstract: An insulative housing formed about a distal end of a medical electrical lead body includes a cavity and a port; an ionically conductive medium fills the cavity and is in intimate contact with an electrode surface contained within the cavity. When a current is delivered to the electrode surface contained within the cavity, a first current density generated at the electrode surface is smaller than a second current density generated out from the port of the insulative housing; thus, the port forms a high impedance and low polarization tissue-stimulating electrode.

Abstract: A method of manufacturing a medical electrical device is presented. An inner diameter and an outer diameter of a connector ring is machined to form a first and a second flange extending from the inner diameter. An electric discharge machining wire burner is used to form a conductor channel in the inner diameter of the connector ring. A conductor is positioned within the conductor channel. A first distal end of the first flange is coupled to a second distal end of the second flange.

Abstract: An elongate body of a medical electrical lead includes at least one conductor formed into a coil that includes a first portion and a second portion, wherein the first portion extends within an outer insulation sheath and the second portion extends outside the outer insulation sheath to be exposed to an environment external to the lead body as an energy dissipating shunt.

Abstract: Described techniques include delivering cardiac pacing therapy from a medical device to a chamber of a heart via a first electrode configuration and determining that the delivery of cardiac pacing therapy via the first electrode configuration inadequately captures the chamber. In response to such a determination, the medical device delivers cardiac pacing therapy to the chamber of the heart via a plurality of additional electrode configurations. The techniques further comprise determining a capture characteristic for each of the additional electrode configurations based on the delivery of cardiac pacing therapy to the chamber of the heart via the plurality of other electrode configurations. A new electrode configuration for cardiac pacing may be selected based on the capture characteristics of the various electrode configurations.

Abstract: A lead fixation tool includes a tapered opening for receiving and guiding a stylet into a lead. The fixation tool also includes an engagement mechanism for gripping a portion of the lead connector so that rotation of the tool causes rotation of an active fixation tip, such as a helical tip, coupled with the lead.

Abstract: A medical electrical lead includes a conductive component coupling a coil to a wire or cable; the conductive component includes a first side, a second side, a first groove formed in the first side and a second groove formed in the second side. The first groove holds a portion of the cable and the second groove holds a portion of the coil.