Patent ID: 11957409
Assignee: BOSTON SCIENTIFIC SCIMED, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 16:
17. A microwave ablation system comprising a microwave energy source, a cooling fluid source, and a microwave ablation probe, the probe comprising:
a probe body comprising a shielded portion and a radiation window that is at least partially transparent to microwave energy, wherein the shielded portion comprises a cannula; and
a coaxial cable within the probe body connected to the microwave energy source, the coaxial cable comprising a center conductor, a dielectric material surrounding the center conductor, and an outer conductor having an outer surface and a distal boundary, wherein the center conductor comprises a radiating portion that extends beyond the distal boundary of the outer conductor, wherein the radiating portion is configured for emission of microwave energy, wherein the radiating portion is aligned with the radiation window;
a probe tip disposed at a distal end of the probe body;
wherein the probe body defines an irrigation path configured to carry cooling fluid to and from a distal portion of the probe body, wherein the cooling fluid source is in fluid communication with the irrigation path, wherein a distal end of the irrigation path terminates proximally to the probe tip;
wherein at least one wall defining the irrigation path comprises a heat exchange surface, wherein the heat exchange surface comprises one or more convective fins extending axially along the heat exchange surface and parallel to a longitudinal axis of the probe body;
wherein the heat exchange surface has an average radius, wherein a surface area of the heat exchange surface is larger than a surface area of a smooth surface with a radius equal to the average radius; and
wherein the cannula comprises a cannula wall, the cannula wall defining a plurality of lumens running through the cannula wall and parallel to the longitudinal axis of the probe body, wherein the plurality of lumens defines a portion of the irrigation path.