Patent ID: 8728068
Filing Date: 2014-05-20
Classification: A61B

Abstract:
1. A device for treating tissue adjacent to a body lumen, the device comprising: a catheter shaft insertable into the body lumen and including a plurality of cooling lumens arranged generally circumjacent a generally central lumen, wherein at least some of the circumjacent cooling lumens are in fluid communication with the central lumen; and an energy emitting assembly including a proximal portion, a microwave antenna, and a distal portion extending distally from the microwave antenna, wherein the energy emitting assembly extends through the central lumen, and wherein the microwave antenna comprises a helical dipole configuration that includes a core extending along a length of at least the energy emitting portion, a series of coil windings arranged in a helical pattern about the core, and a sleeve covering at least the coil windings, wherein the series of coil windings defines a series of recesses between the adjacent coil windings, and wherein the respective coil windings are in contact against the wall of the central lumen to define a generally helical flow path via at least some of the recesses along a length of the microwave antenna.