Abstract: The disclosed technology includes a medical probe includes a substantially cylindrical structure having a proximal circular base, a distal circular base substantially parallel to the proximal circular base, a plurality of spines extending along a longitudinal axis between the proximal circular base and the distal circular base, and one or more strips of flexible circuit substrate coupled to one or more of the plurality of spines defining an internal volume about the longitudinal axis. The plurality of spines include a trifurcation point positioned along at least a portion of the spine and a spine branch extending from the trifurcation point further comprising a bifurcation point. The one or more strips of flexible circuit substrate further include one or more conductive traces disposed on a surface of the substrate.

Abstract: The disclosed technology includes a flexible circuit for an end effector of a medical probe. The flexible circuit includes a flexible substrate, electrodes, and a first sensing loop. The flexible substrate defines tines extending along a longitudinal axis. The electrodes are disposed on each of the tines. The first sensing loop is disposed on the flexible substrate. The first sensing loop forms one or more coils that generate a current that is indicative of a position of the one or more coils when the one or more coils is subjected to a magnetic field. The first sensing loop includes two segments disposed on respective tines extending generally parallel to the longitudinal axis and converging towards each other on a tine disposed on the longitudinal axis.

Abstract: The disclosed technology includes a flexible circuit for an end effector of a medical probe. The flexible circuit comprises a flexible substrate layer, a plurality of electrodes, and a stiffening layer. The stiffening layer is disposed on the first side of the flexible substrate layer and in the first zone of the flexible circuit such that a first thickness of a first zone of the flexible circuit is greater than a second thickness of the second zone of the flexible circuit, the thickness being measured along the vertical axis, and such that a first flexural rigidity of the first zone is greater than a second flexural rigidity of a second zone of the flexible substrate layer.

Abstract: The disclosed technology includes an end effector comprising a plurality of spines extending along a longitudinal axis to define a basket assembly, the plurality of spines configured to bow radially outward from the longitudinal axis to define a radius of curvature with respect to the longitudinal axis and to transition between an expanded configuration and a collapsed configuration. Each spine of the plurality of spines can include a section extending radially outward from the radius of curvature defined by a remainder of each spine. The end effector can further include at least one electrode disposed on the section for each spine of the plurality of spines.

Abstract: The disclosed technology includes an end effector comprising at least one flexible circuit extending along a longitudinal axis having a substrate supporting at least one electrical trace and at least one electrode. Portions of the substrate may be reinforced by forming the electrical trace with a plurality of bends and/or by providing a plurality of bends in the substrate. Additionally, portions of the substrate may include multiple layers, each layer having electrical traces which are offset from one another.

Abstract: The disclosed technology includes an end effector of a medical device. The end effector includes a framework, a flexible circuit including electrodes, an insulative material, and skids. The framework and flexible circuits are disposed on the insulative material. The insulative material includes a first surface disposed a first height from the framework in a height direction of the end effector and includes a first dynamic coefficient of friction. The skids are disposed on the insulative material, each skid comprising a second surface disposed a second height from the framework in the height direction and including a second dynamic coefficient of friction, lower than the first dynamic coefficient of friction. The first surface and the skids are disposed in the height direction such that the first height and each respective second height are one of equal or the respective second height is greater than the first height.

Abstract: The disclosed technology includes basket catheters comprising a generally cylindrical structure having electrodes attached thereto. The disclosed technology can include a structural unit for an end effector comprising a proximal member extending along a longitudinal axis. The proximal member can define a plurality of divergent curvilinear members. Each divergent curvilinear member can define two meander members extending along the longitudinal axis such that the structural unit comprises a plurality of meander members. Each of the plurality of meander members can be connected to a respective convergent curvilinear member of a plurality of convergent curvilinear members. The structural unit can further comprise a distal member connected to the plurality of convergent curvilinear members.

Abstract: The disclosed technology includes a medical probe comprising a substantially cylindrical structure including a proximal circular base, a distal circular base substantially parallel to the proximal circular base, and plurality of spines extending along a longitudinal axis between the proximal circular base and the distal circular base, and a membrane positioned over the plurality of spines defining an internal volume about the longitudinal axis. The plurality of spines comprise a bifurcated portion positioned along at least a portion of the spine between the distal circular base and the proximal circular base. The membrane comprises one or more electrodes coupled to an external surface of the membrane. The membrane is configured to permit fluid communication from outside the membrane to the internal volume.

Abstract: A modular catheter system includes a guiding sheath and multiple catheter inserts configured to couple to the guiding sheath. The guiding sheath can include a navigation sensor coupled to a distal portion of the guiding sheath shaft. A location of a distal portion of a respective catheter insert can be determined based on electrical signals from the navigation sensor. The catheter insert can be electrically coupled to the guiding sheath to provide electrical connection to an electrode assembly on the distal portion of the respective catheter insert. The guiding sheath may include a deflection mechanism that deflects the distal portion of the guiding sheath and a distal portion of a catheter shaft of the catheter insert. The modular catheter system may be configured to be tracked and moved without the catheter inserts requiring a navigation sensor or a deflection mechanism.

Abstract: A medical probe including an end effector is herein disclosed. The end effector includes a flexible insulative material extending along a plane, a framework disposed in the flexible insulative material, and a flexible circuit disposed in the flexible insulative material and spaced apart from the framework. The flexible circuit includes a central branch segment, a plurality of outer branch segments, and a plurality of electrodes. The central branch segment extends along a longitudinal axis of the plane. The outer branch segments extend along the plane a distance away from the longitudinal axis, with at least some of the outer branch segments extending distal to the central branch segment thereby defining a recess in a distal end of the end effector. The electrodes are disposed along the central branch and the plurality of outer branch segments.

Abstract: The disclosed technology includes a framework for an end effector of a medical device. The framework includes a base, a first cantilevered spine, a second cantilevered spine, and a first support. The base connects with an elongated shaft of the medical device. The first cantilevered spine extends from the base along a longitudinal axis to a terminal portion. The second cantilevered spine extends from the base along the longitudinal axis to a terminal portion. The first support connects the terminal portion of the first cantilevered spine with an intermediate portion of the second cantilevered spine.

Abstract: The disclosed technology includes a medical probe comprising a substantially cylindrical structure including a proximal circular base, a distal circular base substantially parallel to the proximal circular base, and plurality of spines extending along a longitudinal axis between the proximal circular base and the distal circular base, and a membrane positioned over the plurality of spines defining an internal volume about the longitudinal axis. The plurality of spines comprise a bifurcated portion positioned along at least a portion of the spine between the distal circular base and the proximal circular base. The membrane comprises one or more electrodes coupled to an external surface of the membrane. The membrane is configured to permit fluid communication from outside the membrane to the internal volume.

Abstract: A flexible circuit is herein disclosed. The flexible circuit is intended for insertion into an internal body cavity of a patient. The flexible circuit includes a flexible substrate comprising a bio-compatible material and extending along a substrate plane, a plurality of electrodes disposed on the flexible substrate, and a conductive wire routed along the flexible substrate and connected to one or more of the plurality electrodes by a stitch pattern.

Abstract: An end effector for a catheter including a flexible circuit including a plurality of electrodes is herein disclosed. The flexible circuit is positioned at least partially within an insulative material. In some examples, the end effector includes a framework spaced from the flexible circuit and one or more position sensing loops.

Abstract: A modular catheter system includes a guiding sheath and multiple catheter inserts configured to couple to the guiding sheath. The guiding sheath can include a navigation sensor coupled to a distal portion of the guiding sheath shaft. A location of a distal portion of a respective catheter insert can be determined based on electrical signals from the navigation sensor. The catheter insert can be electrically coupled to the guiding sheath to provide electrical connection to an electrode assembly on the distal portion of the respective catheter insert. The guiding sheath may include a deflection mechanism that deflects the distal portion of the guiding sheath and a distal portion of a catheter shaft of the catheter insert. The modular catheter system may be configured to be tracked and moved without the catheter inserts requiring a navigation sensor or a deflection mechanism.

Abstract: The disclosed technology includes a magnetic location sensor which may comprise first and second spiral coils that can be disposed on a planar substrate. The first and second spiral coils may be disposed about respective first and second center axes, wherein each of the first and second coils can be configured to generate a voltage when subjected to a magnetic field. The magnetic location sensor may also comprise a high-magnetic-permeability planar member that can be disposed near one of the first and second spiral coils. The high-magnetic-permeability planar member can be disposed on the magnetic location sensor such that if the planar substrate is wrapped around a cylindrical substrate, the high-magnetic-permeability planar member may be disposed on an intersection of the first and second center axes.

Abstract: A sheath is presented having an electrically conducting region providing a low impedance path through the sheath wall. The electrically conducting region is configured to conduct electrical current between an impedance-based tracking electrode of an intralumenal catheter and body patch electrodes of an impedance-based tracking system when the impedance-based tracking electrode is adjacent the conducting region. The impedance-based tracking system is configured to determine a location of the electrically conducting region, and thereby the distal end of the sheath, based on ratios of electrical current at the body patch electrodes. The electrically conducting region can include irrigation perforations so that saline acts as an electrical conduit of the conducting region. Additionally, or alternatively, the electrically conducting region can include an electrically conductive material configured to act as an electrical conduit through the sheath wall.

Abstract: An end effector for a cardiac mapping catheter including a flexible circuit including a plurality of electrodes each electrode of the plurality of electrodes including a contact surface. The flexible circuit can be disposed on an insulative material. The insulative material can be contiguous to the contact surfaces so that only the contact surfaces of at least a portion of the plurality of electrodes are exposed to the ambient environment.

Abstract: An end effector for a catheter. The end effector can include a substrate extending along a longitudinal axis from a proximal portion of the end effector to a distal portion of the end effector. The substrate can include a longitudinal plane, the longitudinal axis running through the longitudinal plane, a first face disposed on a first side of the substrate and oblique to the longitudinal plane; a second face, opposite the first face, disposed on a second side of the substrate; a first group of electrodes disposed on the first face; and a second group of electrodes disposed on the second face.