Microwave energy-delivery device and system

Patent metadata

Field	Value
Publication number	US-12150704-B2
Application number	US-202217588450-A
Country	US
Kind code	B2
Filing date	Jan 31, 2022
Priority date	Mar 15, 2013
Publication date	Nov 26, 2024
Grant date	Nov 26, 2024

Abstract

A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun.

First claim

What is claimed is:

1. A microwave ablation device, comprising:
a hub;
a flexible outer tubular member extending distally from the hub and defining an outer lumen;
an inner tubular member extending through the outer lumen defined by the outer tubular member and defining an inner lumen;
a feedline extending through the inner lumen defined by the inner tubular member, the feedline including an inner conductor, an outer conductor, and a dielectric disposed between the inner conductor and the outer conductor;
a radiating portion operably coupled to the inner conductor of the feedline and configured to radiate microwave energy; and
a temperature sensor disposed proximate the radiating portion.

2. The microwave ablation device of claim 1 , further comprising a hub divider disposed within the hub and forming a first chamber and a second chamber within the hub.

3. The microwave ablation device of claim 2 , wherein the hub includes a first port in fluid communication with the first chamber and a second port in fluid communication with the second chamber.

4. The microwave ablation device of claim 2 , wherein the hub divider creates a fluid-tight seal separating the first chamber from the second chamber.

5. The microwave ablation device of claim 1 , wherein the temperature sensor extends through at least one of the outer lumen or the inner lumen.

6. The microwave ablation device of claim 1 , wherein cooling fluid is configured to flow from the hub through the inner lumen and around the feedline to cool the feedline.

7. The microwave ablation device of claim 6 , wherein the cooling fluid returns to the hub from the outer lumen.

8. The microwave ablation device of claim 1 , wherein the radiating portion is configured to be navigated through a flexible catheter.

9. The microwave ablation device of claim 1 , further comprising a second temperature sensor disposed on an outer surface of the outer tubular member.

10. The microwave ablation device of claim 9 , wherein the second temperature sensor extends through at least one of the outer lumen or the inner lumen.

11. The microwave ablation device of claim 1 , further comprising a conductive sleeve disposed around a portion of the feedline and configured to limit radiation of energy therethrough.

12. A microwave ablation device, comprising:
a flexible outer tubular member defining an outer lumen;
an inner tubular member extending through the outer lumen defined by the outer tubular member and defining an inner lumen;
a feedline extending through the inner lumen defined by the inner tubular member, the feedline including an inner conductor, an outer conductor, and a dielectric disposed between the inner conductor and the outer conductor;
a radiating portion operably coupled to the inner conductor of the feedline and configured to radiate microwave energy; and
a temperature sensor disposed on an outer surface of the outer tubular member.

13. The microwave ablation device of claim 12 , wherein the temperature sensor extends through at least one of the outer lumen or the inner lumen.

14. The microwave ablation device of claim 12 , wherein cooling fluid is configured to flow through the inner lumen and around the feedline to cool the feedline.

15. The microwave ablation device of claim 12 , wherein the radiating portion is configured to be navigated through a flexible catheter.

16. The microwave ablation device of claim 12 , further comprising a second temperature sensor disposed proximate the radiating portion.

17. The microwave ablation device of claim 16 , wherein the second temperature sensor extends through at least one of the outer lumen or the inner lumen.

18. The microwave ablation device of claim 12 , further comprising a conductive sleeve disposed around a portion of the feedline and configured to limit radiation of energy therethrough.

19. A microwave ablation device, comprising:
an outer tubular member defining an outer lumen;
an inner tubular member extending through the outer lumen defined by the outer tubular member and defining an inner lumen;
a feedline extending through the inner lumen defined by the inner tubular member, the feedline including an inner conductor, an outer conductor, and a dielectric disposed between the inner conductor and the outer conductor;
a conductive sleeve disposed around a portion of the feedline and configured to limit radiation of energy therethrough;
a radiating portion operably coupled to the inner conductor of the feedline and configured to radiate microwave energy; and
a temperature sensor disposed on an outer surface of the outer tubular member.

Assignees

• Covidien Lp

Inventors

• Brannan Joseph D
• Ladtkow Casey M
• Peterson Darion R
• Larson Eric W
• Dickhans William J
• Willyard Richard A
• Case Jason A

Classifications

• A61B2018/1892

  Details of electrical isolations of the antenna · CPC title

• A61B2018/00988

  Means for storing information, e.g. calibration constants, or for preventing excessive use, e.g. usage, service life counter · CPC title

• A61B2018/00982

  combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes · CPC title

• A61B2018/00178

  Electrical connectors · CPC title

• A61B2018/1853

  Monopole antennas · CPC title