Abstract: A catheter is disclosed comprising: a connector including a plurality of first contacts and one or more second contacts; a shaft including a plurality of electrodes, each electrode being coupled to a different one of the plurality of first contacts; a memory coupled to at least one of the second contacts, wherein the memory is configured to: store a pinout map identifying an order in which the plurality of electrodes is coupled to the plurality of first contacts; and provide the pinout map to an external device via one or more of the second contacts after the connector is coupled to the external device.

Abstract: A method for displaying electroanatomical information is provided. The method comprises identifying at least one multiple-activation area of a surface of a heart, at which multiple-activation area were recorded at least two different local activations during a single cardiac cycle of the heart. The multiple-activation area is displayed, on an electroanatomical map of the surface of the heart, in a manner that indicates a time difference between respective times of the two local activations. Other embodiments are also described.

Abstract: A catheter includes a shaft for insertion into an organ of a patient, and an extendable distal-end assembly. The distal-end assembly is coupled to the shaft and includes multiple splines. At least one spline includes one or more electrodes and at least one strain-relief element that is configured, when the distal-end assembly is extended in the organ, to allow the spline to conform to a surface of the organ so as to make contact between the electrodes and the surface.

Abstract: A method includes inserting into a patient body a catheter, which includes an insertion tube and at least an expandable distal-end device coupled to a distal end of the insertion tube. The distal-end device is expanded in a blood vessel, thereby forming an annular guiding trench between the distal-end device and a circumference of the blood vessel, the annular trench shaped to receive and guide a distal tip of a medical instrument. The distal tip of the medical instrument is guided in the annular guiding trench formed by the expanded distal-end device of the catheter, so as to approach multiple points on the circumference of the blood vessel.

Abstract: A method for displaying electroanatomical information is provided. The method comprises identifying at least one multiple-activation area of a surface of a heart, at which multiple-activation area were recorded at least two different local activations during a single cardiac cycle of the heart. The multiple-activation area is displayed, on an electroanatomical map of the surface of the heart, in a manner that indicates a time difference between respective times of the two local activations. Other embodiments are also described.

Abstract: A method, including configuring, in a memory, a first buffer to store first buffer data, a second buffer to store second buffer data, and a variable indicative of a persisted size of real-time data persisted to a storage device. On the storage device, a file is configured to store the real-time data and a field is configured to store the variable. A stream of the real-time data is received, and the stream is appended to the first buffer data. Upon meeting a write criteria, the first buffer data in is swapped with the second buffer data, a buffer size of the second buffer data is added to the variable, and the second buffer data is conveyed from the second buffer to a write cache. Upon meeting a commit criteria, the stream stored in the write cache is appended to the file, and the variable is persisted to the field.