Thermal feedback systems and methods of using the same

• US 8,480,666 B2
• Filed: 07/02/2012
• Issued: 07/09/2013
• Est. Priority Date: 01/31/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Buysse, Steven P., Ladtkow, Casey M., Gay, Brandon
• Primary Examiner(s): Dvorak, Linda
• Assistant Examiner(s): SCOTT, AMANDA L
• Application Number:
  US13/539,690
• Publication Number:
  US 20120271303A1
• Time in Patent Office: 372 Days
• Field of Search: 606 32- 35
• US Class Current: 606/34
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/1477 Needle-like probes
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 18/1815 using microwaves
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/00797 measured by multiple temperature sensors
• CPC Class Codes: A61B 2018/00815 measured by a thermistor
• CPC Class Codes: A61B 2018/00821 measured by a thermocouple
• CPC Class Codes: A61B 2018/1823 Generators therefor
• CPC Class Codes: A61B 2018/183 characterised by the type of antenna
• CPC Class Codes: A61B 2090/374 NMR or MRI
• CPC Class Codes: A61B 2090/376 using X-rays, e.g. fluoroscopy
• CPC Class Codes: A61B 2090/3762 using computed tomography systems [CT]
• CPC Class Codes: A61B 2090/378 using ultrasound
• CPC Class Codes: A61B 5/0036 including treatment, e.g., using an implantable medical device, ablating, ventilating
• CPC Class Codes: A61B 5/015 By temperature mapping of body part
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61B 5/743 Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots

Abstract

A system for providing feedback during an electrosurgical procedure on a target tissue is provided. The system includes an electrosurgical energy source; an electrode probe assembly connected to the electrosurgical energy source, wherein the electrode probe assembly includes at least one electrode assembly having a needle configured to deliver electrosurgical energy to the target tissue; at least one thermal feedback assembly connected to the electrosurgical energy source, wherein each thermal feedback assembly includes at least one temperature sensor assembly; and a hub configured to selectively support the electrode probe assembly and each thermal feedback assembly such that the needle of the electrode probe assembly and each temperature sensor assembly of each thermal feedback assembly are proximate one another when disposed proximate the target tissue.

Claims

1. A system for providing feedback during an electrosurgical procedure, the system comprising:

an electrosurgical energy source;

an electrode probe assembly connected to the electrosurgical energy source, the electrode probe assembly configured to deliver electrosurgical energy to target tissue;

a thermal feedback assembly connected to the electrosurgical energy source, the thermal feedback assembly including at least one temperature sensor assembly; and

a hub configured to selectively support the electrode probe assembly and the thermal feedback assembly such that the electrode probe assembly and the at least one temperature sensor assembly are proximate one to another when disposed proximate the target tissue.

2. The system according to claim 1, wherein the electrode probe assembly includes at least one electrode assembly having a needle.

3. The system according to claim 2, wherein the needle of the electrode probe assembly includes an electrically conductive distal tip electrically connected to the electrosurgical energy source.

4. The system according to claim 2, wherein the needle of the electrode probe assembly includes a radiating distal tip electrically connected to the electrosurgical energy source.

5. The system according to claim 1, wherein the thermal feedback temperature sensors are disposed at a spatial relationship to the electrode probe assembly.

6. The system according to claim 1, wherein the thermal feedback assembly includes a plurality of temperature sensors, wherein each temperature sensor is oriented substantially parallel to an axis defined by the needle of the electrode probe assembly.

7. The system according to claim 6, wherein the plurality of temperature sensors are arranged in one of a linear, rectilinear and a triangular array.

8. The system according to claim 6, wherein the plurality of temperature sensors are arranged in a linear array.

9. The system according to claim 8, wherein a plurality of temperature sensors are disposed on opposed sides of the needle of the electrode probe assembly.

10. The system according to claim 9, wherein the plurality of temperature sensors are uniformly spaced from one another.

11. The system according to claim 1, wherein the thermal feedback assembly includes a plurality of temperature sensors, wherein each temperature sensor is oriented substantially orthogonal to an axis defined by the needle of the electrode probe assembly.

12. The system according to claim 1, further comprising a computer connected to at least one of the electrosurgical energy source, the electrode probe assembly and the thermal feedback assembly,

wherein at least one of the electrosurgical energy source, the electrode probe assembly and the thermal feedback assembly transmits information to the computer, and wherein the computer performs at least one of:

an Arrhenius model calculation; and

a determination of an ablation size based on reaching a predetermined temperature set point of about 60°

C.;

on the information received from the at least one of the electrosurgical energy source, the electrode probe assembly and each thermal feedback assembly.