Catheter spine assembly with closely-spaced bipole microelectrodes
AssigneeBiosense Webster (Israel) Ltd.
InventorsShubhayu Basu, Mario A. Solis
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Abstract
An electrophysiologic catheter with a distal electrode assembly carrying very closely-spaced bipole microelectrodes on a plurality of divergent spines that can flexibly spread over tissue surface area minimized detection of undesirable noise, including far-field signals. Each spine has a flexible microelectrode panel having a substrate, at least one pair of microelectrodes, a trace for each microelectrode, and a soldering pad. Adjacent microelectrodes of a bipole pair are separated by a space gap distance ranging between about 50-300 microns. Each microelectrode may have a width of about 200 or 300 microns.
Claims20
An electrophysiological catheter comprising:
- an elongated body;
- and
- a distal electrode assembly comprising:
- a plurality of spines, each of the spines having a free distal end and a proximal end extending from a distal end of the elongated body, each spine having at least one generally planar surface having a surface area;
- and
- a flexible panel on the generally planar surface of at least one of the spines, the flexible panel having a substrate conforming to the generally planar surface of its respective spine, at least one pair of microelectrodes, a trace for each of the microelectrodes, and a soldering pad for each of the microelectrodes, wherein each of the traces electrically couples a respective one of the microelectrodes and a respective one of the soldering pads.
An electrophysiological catheter comprising:
- an elongated body;
- and
- a distal electrode assembly comprising:
- a plurality of spines, each spine having a free distal end and a proximal end extending from a distal end of the elongated body, each of the spines having at least one generally planar surface having a surface area;
- and
- a flexible panel on the generally planar surface of at least one of the spines, the flexible panel having a substrate conforming to an outer surface of its respective spine, a pair of microelectrodes, a trace for each of the microelectrodes, and a soldering pad for each of the microelectrodes, wherein each trace electrically couples a respective one of the microelectrodes and a respective one of the soldering pads, wherein the microelectrodes of the pair of microelectrodes are located on the generally planar surface of their respective spine, and the microelectrodes of the pair of microelectrodes are separated by a space gap distance ranging between about 50 and 300 microns.
An electrophysiological catheter comprising:
- an elongated body;
- and
- a distal electrode assembly comprising:
- a plurality of spines, each spine having a free distal end and a proximal end extending from a distal end of the elongated body, each spine having at least one generally planar surface having a surface area;
- and
- a flexible panel on the at least one generally planar surface of its respective spine, the flexible panel having a substrate with a lateral dimension that is equal to or smaller than a lateral dimension of the surface area of the at least one generally planar surface of its respective spine, a pair of microelectrodes, a trace for each of the microelectrodes, and a soldering pad for each of the microelectrodes, wherein the trace electrically couples a respective one of the microelectrodes and a respective one of the soldering pads, wherein the microelectrodes of the pair of microelectrodes are separated by a space gap distance ranging between about 50 and 300 microns.
Dependencies are inferred from the claim text.