CPC A61B 17/3421 (2013.01) [A61B 18/1206 (2013.01); A61B 18/14 (2013.01); A61B 18/1477 (2013.01); A61B 2017/00026 (2013.01); A61B 2017/00128 (2013.01); A61B 2017/00199 (2013.01); A61B 2017/00247 (2013.01); A61B 2017/3433 (2013.01); A61B 2018/0016 (2013.01); A61B 2018/00077 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00357 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/1226 (2013.01); A61B 2018/1425 (2013.01)] | 12 Claims |
1. A transseptal crossing system, comprising:
a transseptal crossing needle comprising:
a hub;
a first tubular body having a proximal end and a distal end, and a sidewall extending from the proximal end to the distal end and defining a central lumen, the proximal end of the first tubular body coupled with the hub;
a second tubular body having a proximal end and a distal end, the second tubular body extending from the central lumen of the first tubular body such that:
the distal end of the second tubular body is distal of the distal end of the first tubular body, and
the proximal end of the second tubular body is distal to the hub and to the proximal end of the first tubular body,
wherein a spacing between the second tubular body and the hub is fixed,
wherein the sidewall of the first tubular body and a sidewall of the second tubular body are electrically conductive, an insulation layer surrounding the sidewall of the first tubular body and a portion of the sidewall of the second tubular body such that a distal electrode tip on the second tubular body is exposed, wherein the distal electrode tip defines a distal end of the transeptal crossing needle and comprises an end aperture in fluidic communication with the central lumen of the first tubular body; and
a battery powered RF generator, wherein the generator is configured to deliver RF energy to the distal electrode tip.
|