Adjustable length and/or exposure electrodes

• US 9,375,252 B2
• Filed: 07/24/2013
• Issued: 06/28/2016
• Est. Priority Date: 08/02/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Coe, Jonathan A., Ladtkow, Casey M.
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): Vahdat, Khadijeh
• Application Number:
  US13/949,381
• Publication Number:
  US 20140039481A1
• Time in Patent Office: 1,070 Days
• Field of Search: 606 27- 29, 606 39- 41, 606 44- 49, 607101-102
• US Class Current: 1/1
• CPC Class Codes: A61B 18/14 Probes or electrodes 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 2017/00991 Telescopic means
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00172 Connectors and adapters therefor
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/00196 reciprocating lengthwise
• CPC Class Codes: A61B 2018/00202 rotating
• CPC Class Codes: A61B 2018/00529 Liver
• CPC Class Codes: A61B 2018/00541 Lung or bronchi
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/1435 Spiral
• CPC Class Codes: A61B 2018/1467 using more than two electrodes on a single probe

Abstract

An ablation system is provided. The ablation system includes an ablation device having a handle assembly and an electrode assembly. The handle assembly includes a housing configured for operable engagement by a user. The electrode assembly includes a tubular electrode having an open proximal end and a closed distal end. The tubular electrode is movable relative to the housing to adjust an insertable length of the electrode assembly.

Claims

1. An ablation device comprising:

a handle assembly defining a longitudinal axis and including;

a first housing section;

a second housing section coupled to the first housing section and configured to slide relative to and within the first housing section; and

a third housing section coupled to the second housing section and configured to slide relative to and within the first and second housing sections, the second housing section slidably disposed between and relative to the first and third housing sections; and

an electrode assembly directly connected to the first housing section and extending distally through the first, second, and third housing sections, the electrode assembly having a longitudinal length that extends distally of a distal end of the third housing section such that proximal movement of at least one of the second housing section or the third housing section relative to the electrode assembly increases the longitudinal length that extends distally of the distal end of the third housing section.

2. The device of claim 1, wherein the handle assembly is movable between an extended configuration, wherein a proximal portion of the second housing section is disposed distally of the first housing section and a proximal portion of the third housing section is disposed distally of the second housing section, and a retracted configuration, wherein the proximal portion of the second housing section is disposed within the first housing section and the proximal portion of the third housing section is disposed within the second housing section.

3. The device of claim 1, wherein the handle assembly is configured for operable connection with a cooling assembly.

4. The device of claim 1, wherein the electrode assembly is configured for operable connection with a source of radio-frequency energy.

5. The device of claim 1, wherein the handle assembly is configured for operable engagement with a trocar assembly.

6. The device of claim 1, wherein the electrode assembly has a proximal end portion that is fixed to the first housing section.

7. The device of claim 1, wherein the second housing section and the third housing section are telescopically coupled.

8. The device of claim 1, wherein the electrode assembly has a proximal portion that is fixed to a proximal wall of the first housing section.

9. The device of claim 8, wherein the proximal wall of the first housing section is disposed perpendicular to a longitudinal axis defined by the antenna assembly.

10. The device of claim 9, wherein the longitudinal axis defined by the antenna assembly is coaxial with a central longitudinal axis defined by each of the first, second, and third housing sections.