Laparoscopic electrosurgical instrument

• US 5,964,758 A
• Filed: 09/18/1997
• Issued: 10/12/1999
• Est. Priority Date: 09/18/1997
• Status: Expired due to Term

• Current Assignee: Dresden, Scott
• Original Assignee: Dresden, Scott
• Inventors: Dresden, Scott
• Primary Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US08/933,020
• Time in Patent Office: 754 Days
• Field of Search: 606/41, 606/42, 606/45, 606/46, 606/48-52, 606/205-208
• US Class Current: 606/45
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod

Abstract

A laparoscopic electrosurgical instrument which has the capability to grasp, fulgurate, and cut tissue. The laparoscopic electrosurgical instrument has an electrically insulative longitudinal body having a proximal and distal end, and a housing at the distal end. A pair of grasping conductors extend longitudinally from the housing, the conductors being spaced apart in substantially parallel actuatable relationship, and each of the conductors also has a slot therein. A pair of scissors-like cutting members also extends from the housing from between the pair of conductors, and each of the cutting members has a proximal and distal end, with the proximal ends each pivotally connected to the housing and each distal end extending laterally through one of the slots of the pair of conductors. The proximal ends of the cutting member are in actuatable relationship to each other. There is also means extending through the longitudinal body for actuating the pair of conductors and pair of scissors-like cutting members, and for selectively supplying an electrical charge to the pair of conductors. On the proximal end of the body, there are means for controlling the actuation of the pair of conductors and pair of scissors-like cutting members.

Claims

1. A laparoscopic electrosurgical instrument, comprising:

(a) an electrically insulative longitudinal body having a proximal and distal end;

(b) a housing at the distal end of the body;

(c) a pair of grasping conductors extending longitudinally from the housing, the conductors substantially parallel in spaced-apart actuatable relationship, each of the conductors having a slot therein;

(d) a pair of scissors-like cutting members extending from the housing between the pair of conductors, each of the cutting members having a proximal and distal end, the proximal ends each being pivotally connected to the housing and the distal ends each extending laterally through one of the slots of the pair of conductors, the proximal ends further being in actuatable relationship to each other;

(e) means extending through the longitudinal body for actuating the pair of conductors and the pair of scissors-like cutting members;

(f) means extending through the longitudinal body for supplying an electrical charge to the pair of conductors; and

(g) means at the proximal end of the longitudinal body for controlling the actuation of the pair of conductors and the pair of scissors-like cutting members.

2. The laparoscopic electrosurgical instrument as recited in claim 1, wherein the distal ends of the scissors-like cutting members are rounded to minimize trauma to tissue.

3. The laparoscopic electrosurgical instrument according to claim 2, wherein the scissors-like cutting members are designed to shear when being closed.

4. The laparoscopic electrosurgical instrument according to claim 3, wherein the scissors-like cutting members are made of non-conductive material.

5. The laparoscopic electrosurgical instrument according to claim 1, wherein the means for actuating the pair of conductors and the pair of scissors-like cutting members is a mechanical linkage with the means for controlling actuation.

6. The laparoscopic electrosurgical instrument as according to claim 5, wherein the means for controlling actuation is a single trigger.

7. The laparoscopic electrosurgical instrument according to claim 5, wherein the pair of conductors are each a jaw of a forcep.

8. A laparoscopic electrosurgical instrument, comprising:

(a) an electrically insulative longitudinal body having a proximal and distal end;

(b) a housing at the distal end of the body;

(c) a pair of grasping conductors extending longitudinally from the housing, the conductors substantially parallel in spaced-apart actuatable relationship, each of the conductors having a slot therein, each of the conductors being shaped like a jaw of a forcep;

(d) a pair of non-conductive scissors-like cutting members extending from the housing between the pair of conductors, each of the cutting members having a proximal and distal end, the proximal ends each being pivotally connected to the housing, and the distal ends each being rounded and extending laterally through one of the slots of the pair of conductors, the proximal ends further being in actuatable relationship to each other;

(e) mechanical means extending through the longitudinal body for independently actuating the pair of conductors and the pair of scissors-like cutting members;

(f) a wire extending through the longitudinal body for supplying an electrical charge to the pair of conductors; and

(g) mechanical means at the proximal end of the longitudinal body for controlling the independent actuation of the pair of conductors and the pair of scissors-like cutting members.

9. The laparoscopic electrosurgical instrument according to claim 8, wherein the means for controlling independent actuation is a double trigger.