Electrosurgical devices, systems and methods of using the same

• US 8,608,739 B2
• Filed: 07/22/2008
• Issued: 12/17/2013
• Est. Priority Date: 07/22/2008
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Sartor, Joe D., Heard, David N.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): MATNEY, BROOKE MARIE
• Application Number:
  US12/177,327
• Publication Number:
  US 20100023007A1
• Time in Patent Office: 1,974 Days
• Field of Search: 606/49, 606/41, 606/45, 606/51, 606/48, 607/100, 607/116, 604/9
• US Class Current: 606/49
• CPC Class Codes: A61B 18/08 by means of electrically-heated probes
• CPC Class Codes: A61B 18/149 bow shaped or with rotatable body at cantilever end, e.g. for resectoscopes, or coagulating rollers
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00035 with return means
• CPC Class Codes: A61B 2018/1407 Loop

Abstract

According to an aspect of the present disclosure, a desiccation device for operation on a target tissue is provided. The device includes a handle; a shaft extending distally from the handle, wherein the shaft defines a lumen therethrough; and a head having a loop configuration supported on a distal end of the shaft, the head being hollow and defining a lumen therethrough, said lumen being in fluid communication with the lumen of the shaft. At least a portion of the cutting head is electrically connected to a source of electrosurgical energy. A fluid is circulatable through the lumen of the shaft and the head.

Claims

1. A surgical device for operation on a target tissue, the device comprising:

a tubular body portion defining a lumen therethrough; and

a hollow electrode extending along an outer surface of the tubular body, the electrode including a first portion extending along a length of the tubular body, a second portion extending radially along at least a portion of the periphery of the tubular body, and a third portion extending along a length of the tubular body, wherein a proximal end of each of the first and third portions of the electrode is fluidly connected to a fluid source.

2. The surgical device according to claim 1, wherein the interior of the lumen is coated to prevent clogging.

3. The surgical device according to claim 2, wherein the electrode is fabricated from an electrically conductive material, and wherein an insulative coating is disposed over at least a segment of the electrode.

4. The surgical device according to claim 3, wherein the second portion of the electrode extends by an angle of less than about 180°

.

5. The surgical device according to claim 3, wherein the second portion of the electrode extends by an angle of greater than about 180°

.

6. The surgical device according to claim 1, wherein the first and third portions of the electrode are covered with an insulative material.

7. The surgical device according to claim 1, wherein a vacuum source is fluidly connected to the lumen of the tubular body.

8. The surgical device according to claim 1, further comprising a scraper extending distally from the tubular body.

9. The surgical device according to claim 8, wherein the scraper is slidably supported on the tubular body and is movable relative to the tubular body.

10. The surgical device according to claim 1, wherein at least the second portion of the electrode is electrically connected to an electrosurgical energy source.

11. The surgical device according to claim 1, wherein the radial portion of the electrode has a conductive coating for further reducing char and drag on the electrode.