Electrosurgical probe

• US 5,267,994 A
• Filed: 02/10/1992
• Issued: 12/07/1993
• Est. Priority Date: 02/10/1992
• Status: Expired due to Term

• Current Assignee: Conmed Corporation (Jefferies Financial Group, Inc.)
• Original Assignee: Conmed Corporation (Jefferies Financial Group, Inc.)
• Inventors: Williams, Frank, Wheatley, William, Gentelia, John S.
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US07/833,001
• Time in Patent Office: 666 Days
• Field of Search: 606/15, 606/41, 606/45, 606/46, 606/47, 606/48, 606/49, 606/50, 604/35
• US Class Current: 606/15
• CPC Class Codes: A61B 18/1482 having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2017/22072 with an instrument channel, e.g. for replacing one instrument by the other
• CPC Class Codes: A61B 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/00196 reciprocating lengthwise
• CPC Class Codes: A61B 2018/00982 combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2090/0817 Spatulas or spatula like extensions

Abstract

An electrosurgical probe is provided which reduces the likelihood of arcing from the probe. In addition, the probe provides the ability to place a fiber-optic cable through the probe for providing for laser surgery or for laproscopic examination of the patient. The electrosurgical probe comprises an electrosurgical tip, a cylindrical body attached to the tip, and a base attached to the cylindrical body. The tip may have many different shapes but a spatula shape is generally preferred. The tip has at least one notch in the periphery of the spatula shape for retaining a fiber-optic cable. The cylindrical body is substantially hollow so that suction, irrigation, and laparoscopy may be carried out through the probe. To aid the surgeon in determining dimensions of organs within a patient, the cylindrical body has a plurality of striped regions having a predetermined thickness spaced apart at predetermined intervals on an outer surface of the cylindrical body. The cylindrical body is composed of an insulative material for preventing accidental shock to a patient. To prevent accidental arcing, an insulative layer which substantially covers the electrosurgical tip with at most a 4 mm extension of the electrosurgical tip exposed with no insulative layer.

Claims

1. An electrosurgical probe comprising, in combination, an elongated cylindrical body, a passageway extending through the cylindrical body, a handle secured to a proximal end of the cylindrical body, a conductive electrosurgical tip secured to a distal end of the cylindrical body, an insulative layer disposed over the surface of a portion of the conductive tip, said insulative layer extending from the distal end of the cylindrical body for a length so that not more than 4 mm of an outer end portion of the conductive tip is exposed, a conductive wire extending from the conductive tip through the cylindrical body to the handle, a fiber optic cable extending through the handle, the cylindrical body and conductive tip with a distal end of fiber optic extending outwardly beyond the conductive tip, and means mounted on the handle for mounting a suction or irrigation system in communication with the passageway extending through the cylindrical body.

2. The probe recited in claim 1 wherein said electrosurgical tip is spatula shaped.

3. The probe recited in claim 2 wherein said spatula shaped tip has at least one notch in the periphery of said spatula shaped tip supporting the fiber-optic cable.

4. The probe recited in claim 2 wherein said spatula shaped tip is angled at least 30°

with respect to a centerline of said cylindrical body.

5. The probe recited in claim 1 wherein said electrosurgical tip is spoon shaped.

6. The probe recited in claim 5 wherein said spoon shaped tip has at least one notch in the periphery of said spoon shaped tip supporting the fiber-optic cable.

7. The probe recited in claim 5 wherein said spoon shaped tip is angled at least 30°

with respect to a centerline of said cylindrical body.

8. The probe recited in claim 1 wherein said electrosurgical tip is shaped as a hockey stick.

9. The probe recited in claim 1 wherein said electrosurgical tip is hook shaped.