Basket catheter with microelectrode array distal tip
AssigneeBiosense Webster (Israel) Ltd.
InventorsAndres Claudio Altmann, Assaf Govari, Christopher Beeckler, Rowan Hettel
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Abstract
A catheter adapted for greater mapping resolution and location precision has a basket-shaped, high density electrode assembly for large-area mapping, and an integrated distal tip providing an array of ultra-high density microelectrodes for acute focal mapping. The basket-shaped electrode assembly 18 has a plurality of electrode-carrying spines and the distal tip has a nonmetallic, electrically insulating substrate body with indentations in which microelectrodes are positioned in a manner that the outer surface is generally flush with the outer surface of the substrate body to present a generally smooth, atraumatic distal tip profile.
Claims20
A catheter comprising:
- an elongated catheter body having proximal and distal ends and at least one lumen therethrough;
- a basket electrode assembly at the distal end of the catheter body, the basket electrode assembly having proximal and distal ends and comprising a plurality of spines, the plurality of spines comprising a plurality of electrodes, the distal end of the basket electrode assembly comprising a substrate body and a plurality of recessed microelectrodes, the substrate body has an outer surface and outer surfaces of the plurality of recessed microelectrodes are flush with the outer surface of the substrate body.
A catheter comprising:
- an elongated catheter body having proximal and distal ends and at least one lumen therethrough;
- a basket electrode assembly at the distal end of the catheter body, the basket electrode assembly having proximal and distal ends and comprising a plurality of spines, the plurality of spines comprising a plurality of electrodes;
- and
- a distal tip at the distal end of the basket electrode assembly, the distal tip comprising a substrate body, and a plurality of recessed microelectrodes, the substrate body having an outer surface and passages,
- wherein outer surfaces of the plurality of recessed microelectrodes are flush with the outer surface of the substrate body, and
- wherein lead wires for the plurality of microelectrodes pass through the passages.
Dependencies are inferred from the claim text.