Abstract: An apparatus includes an end effector having loop members with electrodes thereon and is usable with catheter-based systems to measure or provide electrical signals. The end effector can include three loop members that are non-coplanar when expanded unconstrained that become contiguous to a planar surface when the loop members are deflected against the surface, a mechanical linkage that joins the loop members at a distal vertex of the end effector, electrodes having surface treatment to enhance surface roughness of the electrodes, twisted pair electrode wires, a bonded spine cover, and/or any combination thereof.

Abstract: The disclosed technology includes an expandable spine including a connecting portion that includes a first slit facing an interior space formed by the expandable spine when the expandable spine is in an expanded state, a first electrode attached to the expandable spine and disposed at a distal end of the first slit. a second electrode attached to the expandable spine and disposed proximal to the first electrode and at a proximal end of the first slit, and a wire configured to electrically connect the first and second electrodes and configured to be positioned within the first slit when the expandable spine is in a collapsed state and be positioned outside of the first slit such that the wire travels in a more direct path compared to the path of the connecting portion the first and second electrodes when in the expanded state.

Abstract: The disclosed technology includes a medical probe including a tubular shaft and an end effector. The tubular shaft can define a longitudinal axis and have a tubular shaft end. The end effector can be coupled to the tubular shaft end. The end effector can include a crown. The end effector can include at least one spine that extends along the longitudinal axis. The at least one spine can include a deployed position and delivery position relative to the longitudinal axis. The at least one spine can include a first material. The end effector can include at least one hinge coupling the at least one spine to the crown. The at least one hinge can include a second material different from the first material.

Abstract: A catheter having an end effector with multiple spines forming a basket shape is disclosed herein. The end effector can include spine loops with overlapping extensions at a distal end of the end effector. The end effector can include one or more inflatable members that are deflated during delivery and inflate to prevent the distal end of the basket assembly from contacting tissue. The end effector can include a spine hub at a distal end of the basket assembly with spine loops that extend through openings of the spine hub. The end effector can include a spiral inductor at the distal end of the basket assembly. The end effector can include an atraumatic structure over a distal end of a frame of the basket assembly.

Abstract: An end effector of a medical probe, the end effector including a plurality of elongated support members extending along a longitudinal axis of the end effector and the plurality of elongated support members configured to expand from the longitudinal axis. Each of the plurality of elongated support members includes an electrode landing region. The electrode landing region of each of the plurality of elongated support members includes a first surface facing away from the longitudinal axis and at least one extension extending from the first surface and curving toward the longitudinal axis. The first surface of the electrode landing region includes an electrode coupled to the first surface.

Abstract: The disclosed technology includes an expandable basket assembly of a medical probe that includes (i) a plurality of spines connected to the distal end of the hub and extending along the longitudinal axis and configured to bow radially outward from the longitudinal axis when the expandable basket assembly is transitioned from a collapsed form to an expanded form, (ii) a plurality of electrodes, each electrode of the plurality of electrodes may be attached to a spine of the plurality of spines, (iii) one or more struts respectively attached to at least one of the plurality of electrodes, and (iv) a force sensor attached to the distal end of the hub and at least one of the plurality of struts. The force sensor may be configured to detect a force applied to one or more of the plurality of electrodes via the one or more struts.

Abstract: The disclosed technology includes a medical end effector comprising one or more spines extending along a longitudinal axis. The spines further comprising a first surface being outward from the longitudinal axis; one or more contact pads affixed to a portion of the first surface of the spine; and one or more flexible circuits disposed over respective ones of the one or more contact pads, the one or more flexible circuits each comprising an electrode and an inductive coil as one unit.

Abstract: An apparatus includes an end effector having loop members with electrodes thereon and is usable with catheter-based systems to measure or provide electrical signals. The end effector can include three loop members that are non-coplanar when expanded unconstrained that become contiguous to a planar surface when the loop members are deflected against the surface, a mechanical linkage that joins the loop members at a distal vertex of the end effector, electrodes having surface treatment to enhance surface roughness of the electrodes, twisted pair electrode wires, a bonded spine cover, and/or any combination thereof.

Abstract: Examples presented herein generally include systems and methods which can contact electrodes to cardiac tissue while sensing electrical potential from fluids near the tissue. The electrodes in contact with the tissue can be carried by an end effector and can be used to sense and/or ablate the tissue they contact. A reference electrode can be insulated by a shaft connected to the end effector so that the reference electrode can sense the electrical potentials from the fluids near the tissue while being prevented, by the shaft geometry, from contacting the cardiac tissue. In some examples, the reference electrode can be tubular, having an inner surface that is configured to contact and sense electrical potentials from the fluids and an electrically insulated outer surface. Configured as such, the reference electrode can serve as an extension of an irrigation tube extending through the shaft.

Abstract: An apparatus includes a cylindrical shaft and an outwardly flared feature. The cylindrical shaft is sized for insertion into an insertion port of a cardiovascular catheter guiding sheath. The cylindrical shaft includes a proximal end, a distal end, and a lumen extending from the proximal end to the distal end. The lumen is sized to receive an end effector and catheter of a cardiovascular catheter instrument. The outwardly flared feature is at the proximal end of the cylindrical shaft. The outwardly flared feature defines an angled surface leading into the lumen.