A method includes receiving one or more signals indicative of a position of a distal-end assembly of a medical probe within an organ of a patient. Based on the received signals, an inner volume that is confined within the distal-end assembly is determined. An anatomical map of the organ is updated, to denote the inner volume of the distal-end assembly as belonging to an interior of the organ.

A catheter has a distal assembly with at least one loop with ring electrodes. A single continuous puller wire for bidirectional deflection is pre-bent into two long portions and a U-shape bend therebetween. The U-shape bend is anchored at a distal end of a deflectable section which is reinforced by at least one washer having at least two holes, each hole axially aligned with a respective lumen in the deflectable section. Each hole is centered with a lumen so that each puller wire portion therethrough is straight and subjected to tensile force only. A proximal end of the support member is flattened and serrated to provide a better bonding to the distal end of the deflectable section.

A myocardial excitation determining apparatus which can support the determination of excitation dynamics of the myocardium during atrial fibrillation is provided. A myocardial excitation determining apparatus has: an acquiring section 2 which acquires an intracardiac electrocardiogram of a subject; a processing section 3 which computes to produce visualized data indicating a state of excitation in the myocardium, based on the intracardiac electrocardiogram; and a determining section 4 which determines the type of excitation dynamics of the myocardium based on the visualized data.

A connection device for a deflectable medical device, such as a catheter, comprises an elongate planarity wire having a proximal end and a distal end, an elongate activation wire having a proximal end a distal end, a passage and an interface. The passage extends through the planarity wire near the distal end of the planarity wire. The distal end of the activation wire extends through the passage. The interface is between the passage and the activation wire, and may comprise one or more of the following: a hook and bore interface, a detent interface, a mechanical interface, or a metallurgical interface.

The present invention concerns a system (100) for analyzing electrophysiological data, especially intracardial electrogram data, the system (100) comprising a data processing and control unit (15) for processing the electrophysiological data, a data output unit comprising a data output screen (324) for displaying results of electrophysiological data analysis, wherein the data processing and control unit (15) being configured to receive electrophysiological data obtained from a mapping catheter assembly (110, 111) that comprises an electrode assembly (120, 80) with a plurality of n electrodes (82), each electrode (82) configured for measuring electrophysiological data in the form of electrogram signals. The data processing and control unit (15) comprises an engine for performing an optical flow analysis of the electrophysiological data to generate series of vector data (40) representing the average speed and direction of movement of clusters of the electrophysiological data, the data output unit being configured to display the vector data on a data output screen (324) of the data output unit.

A catheter with a variable circular loop is responsive to a contraction wire for increasing the coiling of the circular loop. The shape of the loop is supported by an elongated member, wherein a radially constrictive sleeve confines the contraction wire to extends immediately alongside the length of elongated member so as to improve uniformity and minimize misshaping of the loop during contraction.

An electrophysiology catheter includes an elongated support member with shape-memory as a first composite component and an elongated outer tubing as a second composite component, the support member defining a longitudinal axis of the catheter, the support member including a distal portion with a plurality of single-axis sensors, and the elongated outer tubing generally coextensive with the elongated support member, the tubing including a side wall surrounding a lumen through which the support member extends and joins with the outer tubing to form a catheter, the tubing including conductive wires embedded in the side wall and ring electrodes on an outer surface of the side wall, each ring electrode in conductive contact with a respective conductive wire.

A catheter configured to guide and support a balloon catheter for use in and around a pulmonary vein and its ostium, has an elongated shaft and a distal assembly, the elongated shaft including a proximal portion with a first flexibility and a distal portion including a second flexibility greater than the first flexibility, the distal assembly including an elbow portion and a generally circular portion generally transverse to the longitudinal axis, the generally circular portion including a third flexibility greater than the second flexibility. Single axis location sensors and sensing ring electrodes are carried on the generally circular portion.

In one embodiment, a medical procedure system, a probe including a shaft, deflectable arms, a position sensor on the shaft, and electrodes along each arm, and processing circuitry to measure readings of the sensor, compute first position coordinates of proximal ends of the arms responsively to the readings and a predefined spatial relation between the sensor and proximal ends, measure an indication of electrical impedances between body surface electrodes and at least two electrodes of each arm, compute second position coordinates of each of the at least two electrodes on each arm responsively to the indication, fit a respective curve corresponding to each arm responsively to the respective first position coordinates of the respective proximal end and the second position coordinates of each of the respective at least two electrodes, and render a graphical representation of the probe including the deflectable arms responsively to the respective fitted curve.

Dual sensor system for continuous blood pressure monitoring during transcatheter heart valve therapies (TVT), such as transcatheter aortic valve replacement (TAVR) or transcatheter mitral valve replacement (TMVR), comprises a controller, a support guidewire for TVT containing a first Fabry-Prot (FP) optical pressure sensor near its distal end, and a pigtail catheter for delivery of contrast medium containing a second FP optical pressure sensor near its distal end. For example, for TAVR, the support guidewire is positioned to place the first optical pressure sensor within the left ventricle (LV) for monitoring LV pressure, the pigtail catheter is positioned in the aorta to place the second optical pressure sensor in the ascending aorta for direct measurement of pressure in the aorta, downstream of the aortic valve, enabling continuous monitoring of blood pressure at both sensor locations during TAVR. The controller may be configured to interface with standard patient monitoring systems.