Transseptal crossing system for single pass large bore access
AssigneeCirca Scientific, Inc.
InventorsBrian Schuler, Steve Howard, Brad Klos
Life of this patent
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Abstract
A single pass, large bore transseptal crossing catheter system is disclosed. An elongate, flexible tubular body has a proximal end, a distal end and an electrically conductive sidewall defining a central lumen. An insulation layer surrounds the sidewall and leaves exposed a first distal electrode tip. An inner conductive wire is provided, having a second distal electrode tip. The inner wire is axially movably extendable through the central lumen. A tubular insulation layer is provided in between the wire and the electrically conductive sidewall.
Claims18
A single pass transseptal crossing catheter, comprising:
- an elongate, flexible tubular body, having a proximal end, a distal end, and an electrically conductive sidewall defining a central lumen;
- a first insulation layer surrounding the electrically conductive sidewall and leaving exposed a first distal electrode tip being positioned on a distally facing end surface of the electrically conductive sidewall, wherein the first distal electrode tip comprises at least four distal projections forming a scalloped surface with a plurality of circumferentially spaced apart distal charge transfer surfaces, wherein the at least four distal projections are configured to provide a site of enhanced energy density;
- and
- a second tubular insulation layer disposed within the central lumen, wherein the second tubular insulation layer is separate from the first insulation layer.
Dependencies are inferred from the claim text.