CATHETER WITH INTEGRATED TRANSSEPTAL PUNCTURE NEEDLE

摘要

A cardiac treatment system of the subject technology provides access across an interatrial septum of a patient. Such a treatment system can include a catheter having an ablation treatment device on an outer surface of a distal region thereof. A needle is provided at least partially within a lumen of the catheter. A control unit is operatively connected to the ablation treatment device for ablation of a portion of a septum by RF ablation. A distal end of a catheter is provided to the septum (e.g., at the fossa ovalis) of the patient while a distal tip of the needle is within the lumen and proximal to the distal end of the catheter. The distal tip of the needle punctures and crosses the septum, and a portion of the septum is ablated with an ablation treatment device aligned with the septum by guidance from the needle.

主权项

1. A treatment system, comprising:
a catheter having a proximal end, a distal end, a lumen extending from the proximal end to the distal end, and a distal region comprising an ablation treatment device on an outer surface of the distal region; a needle disposed at least partially within the lumen and having a distal tip advanceable relative to the catheter, wherein the needle comprises a plurality of annular stages having a collapsed configuration and an extended configuration, the annular stages having a greater degree of overlap in the collapsed configuration than in the extended configuration; and a control unit disposed at the proximal end of the catheter and being operatively connected to the ablation treatment device for ablation of a portion of a septum.