Microwave energy-delivery device and system

Patent metadata

Field	Value
Publication number	US-10105181-B2
Application number	US-201715465401-A
Country	US
Kind code	B2
Filing date	Mar 21, 2017
Priority date	Mar 15, 2013
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

An ablation system including an image database storing a plurality of computed tomography (CT) images of a luminal network and a navigation system enabling, in combination with an endoscope and the CT images, navigation of a locatable guide and an extended working channel to a point of interest. The system further includes one or more fiducial markers, placed in proximity to the point of interest and a percutaneous microwave ablation device for applying energy to the point of interest.

First claim

What is claimed is:

1. An ablation system, comprising:
a microwave ablation device:
a feedline including a distal radiating section;
a balun disposed on an outer conductor of the feedline; and
a temperature sensor disposed on the balun and configured to sense a temperature of the balun;

a cooling system operatively coupled to the microwave ablation device and configured to provide a fluid to the microwave ablation device during an ablation procedure;
a hub configured to couple the cooling system to the microwave ablation device; and
an energy source operatively coupled to the microwave ablation device and configured to provide microwave energy to the microwave ablation device in response to the temperature of the balun.

2. The ablation system according to claim 1 , wherein the cooling system comprises a cooling unit operatively coupled to the microwave ablation device and configured to cool the fluid provided to the microwave ablation device.

3. The ablation system according to claim 1 , wherein the microwave ablation device further comprises:
an inner tubular member; and
an outer tubular member.

4. The ablation system according to claim 1 , wherein the microwave ablation device further comprises
a balun short electrically connecting the balun to the outer conductor.

5. The ablation system according to claim 3 , wherein the feedline, the inner tubular member, and the outer tubular member are arranged columinally and define a first gap between the feedline and the inner tubular member and a second gap between the inner tubular member and the outer tubular member to enable fluid flow through the microwave ablation device.

6. The ablation system according to claim 5 , wherein the hub comprises a first port and a second port, and wherein the first gap is in fluid communication with the first port, and the second gap is in fluid communication with the second port.

7. The ablation system according to claim 6 , wherein the hub comprises a hub cap operatively engaged with a distal portion of the hub, the hub cap configured to receive the microwave ablation device.

8. The ablation system according to claim 7 , wherein the hub further comprises a hub divider configured to define a first chamber and a second chamber, wherein the first chamber is in fluid communication with the first port and the second chamber is in fluid communication with the second port.

9. The ablation system of claim 3 , further comprising a temperature sensing system operatively coupled to the microwave ablation device and configured to sense a temperature profile of tissue proximate the distal radiating section of the feedline.

10. The ablation system of claim 9 , wherein the microwave ablation device further comprises a temperature sensor on the outer tubular member, the temperature sensor being operatively coupled to the temperature sensing system and configured to sense the temperature of tissue adjacent the outer tubular member.

11. The ablation system of claim 10 , wherein the energy source is configured to cease application of energy when the sensed temperature exceeds a threshold.

12. The ablation system of claim 10 , wherein the temperature sensing system is configured to receive temperature data from the temperature sensor.

13. The ablation system of claim 12 , wherein the temperature data provides feedback to the energy source to control the operation of the energy source.

14. The ablation system of claim 12 , wherein the temperature sensing system is configured to compare the received temperature data to a temperature profile stored in a memory for determining whether sufficient energy has been applied to the tissue.

15. The ablation system of claim 14 , wherein the temperature sensing system is configured to store in the memory radiation patterns associated with the received temperature data, a duration of energy application, and a power setting of the energy source.

16. The ablation system of claim 9 , further comprising a second temperature sensor configured to sense the temperature of a cooling fluid in the first gap.

17. The ablation system of claim 9 , further comprising a second temperature sensor configured to sense the temperature of a cooling fluid in the second gap.

18. The ablation system of claim 9 , wherein the microwave ablation device further comprises a second temperature sensor operatively coupled to the microwave ablation device and configured to sense the temperature of the distal radiating section.

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

• A61B2090/3966

  Radiopaque markers visible in an X-ray image · CPC title

• A61B2090/395

  with marking agent for marking skin or other tissue · CPC title

• A61B2034/107

  Visualisation of planned trajectories or target regions · CPC title

• A61B2018/1861

  with an instrument inserted into a body lumen or cavity, e.g. a catheter · CPC title

• A61B2018/00982

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