Bipolar electrosurgical instrument

• US 4,671,274 A
• Filed: 09/25/1985
• Issued: 06/09/1987
• Est. Priority Date: 01/30/1984
• Status: Expired due to Fees

• Current Assignee: Kharkovsky Nauchno-Issledovatelsky Institut Obschei I Neotlozhnoi Khirugii
• Original Assignee: Kharkovsky Nauchno-Issledovatelsky Institut Obschei I Neotlozhnoi Khirugii
• Inventors: Sorochenko, Oleg A.
• Primary Examiner(s): Howell, Kyle L.
• Assistant Examiner(s): Citrin, Randy
• Application Number:
  US06/783,930
• Time in Patent Office: 622 Days
• Field of Search: 128/303.13, 128/303.14, 128/303.15, 128/303.16, 128/303.17, 128/321, 128/322, 128/749, 128/800
• US Class Current: 606/51
• CPC Class Codes: A61B 17/2812 with a single pivotal connection A61B17/29 takes precedence
• CPC Class Codes: A61B 18/1402 Probes for open surgery
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2017/2945 Curved jaws
• CPC Class Codes: A61B 2018/1432 curved

Abstract

A bipolar electrosurgical instrument, comprising movable arms (1 and 3) electrically insulated from each other and provided with current-carrying working jaws. According to the invention, the working jaws are shaped as prongs (6 and 7) curved in the same direction, the prongs (7) of the working jaw of the arm (3) being shaped as a fork, which enables one to manipulate in a bloodless operative field of the various parenchymatous organs due to quick and reliable fusion of nonopened (intact) large-calibre blood vessels over a preset segment length thereof.

Claims

1. A bipolar electrosurgical instrument, said instrument comprising:

(a) a first arm terminating in a unitary curved, electrically conductive prong extending outwardly from an end thereof, said unitary prong having a narrowed end for liberating an intact blood vessel from a wound and for insertion into a lumen of an open blood vessel;

(b) a second arm connected to said first arm for movement relative to said first arm and terminating in a pair of laterally spaced, outwardly extending curved, electrically conductive prongs defining a two pronged fork, said first and second arms being electrically insulated from each other and movable relative to each other to cause said unitary prong to pass into and through the space between said pair of prongs, each of said prongs being curved in the same direction; and

(c) conductor means for electrically connecting said prongs with a source of electrical energy for coagulating a blood vessel positioned between said unitary prong on said first arm and said pair of prongs on said second arm.

2. A bipolar electrosurgical instrument as claimed in claim 1, wherein the unitary curved prong of one of the arms is longer than the two pronged fork of the other arm.

3. A bipolar electrosurgical instrument as claimed in claim 1, wherein the surface area of the unitary prong is substantially equal to the sum of the surface areas of the two pronged fork.

4. A bipolar electrosurgical instrument as claimed in claim 1, wherein the surface area of the unitary prong is less than the sum of the surface areas of the two pronged fork.

5. A bipolar electrosurgical instrument, comprising:

two electrically conducting arms connected to each other for relative movement therebetween and electrically insulated from each other and having ends carrying respective conductive working jaws in the form of prongs bent in one and the same direction, the working jaw of one of said arms comprising a double prong yoke and the working jaw of the other of said arms including a single prong, the prongs of said double prong yoke of one of said arms lying outwardly of and on opposite sides of said single prong of the working jaw of the other arm when said arms are brought close to each other.

6. A bipolar electrosurgical instrument according to claim 5, said single prong of one said working jaw being longer than said prongs of the other working jaw.

7. A bipolar electrosurgical instrument according to claim 5, wherein the surface area of said single prong is substantially equal to the total surface area of said double prong of the yoke.

8. A bipolar electrosurgical instrument according to claim 5, wherein said single prong has a surface area which is smaller than the total surface area of said double prong of the yoke.