Method of scleral marking

• US 4,476,862 A
• Filed: 09/30/1982
• Issued: 10/16/1984
• Est. Priority Date: 12/08/1980
• Status: Expired due to Term

• Current Assignee: David S.C. Pao
• Original Assignee: David S.C. Pao
• Inventors: Pao, David S. C.
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US06/428,849
• Time in Patent Office: 747 Days
• Field of Search: 128/303.13, 128/303.14, 128/303.17, 128/303.18, 128/303.19, 128/800
• US Class Current: 606/50
• CPC Class Codes: A61B 18/1402 Probes for open surgery
• CPC Class Codes: A61B 2018/126 bipolar
• CPC Class Codes: A61F 9/00 Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand caps with means for protecting the eyes A42B1/018; visors for helmets A42B3/22; retractors A61B17/02; manipulators specially adapted for use in surgery A61B34/70; appliances to aid invalids to move about A61H3/00; exercisers for the eyes A61H5/00; eye baths A61H35/02; sunglasses or goggles having the same features as spectacles G02C
• CPC Class Codes: A61F 9/0079 using non-laser electromagnetic radiation, e.g. non-coherent light or microwaves

Abstract

An electrode for use in electrocautery includes a central electrode having an outer electrode coaxially disposed therearound. The central and outer electrodes are electrically insulated from each other and are adapted to receive a high frequency voltage or direct voltage thereacross. The diameter of the central electrode as well as the inner and outer diameters of the outer electrode are dimensioned in accordance with the designated use of the probe, for example: general surgery, specialty surgery or micro surgery. In the preferred embodiment, the central or axial electrode has an elongate cylindrical shape with one end thereof tapering down to a point. The outer electrode has an elongate hollow tubular shape which is coaxially disposed around the central electrode. A first end of the outer electrode is disposed slightly behind the tapered tip of the central electrode in order to form a probe end wherein the tapered tip of the central electrode protrudes slightly beyond the plane defining the terminus of the outer electrode, depending on its use the tip need not be tapered nor protrude. Depending upon the use, the probe end may be either straight or curved. The electrodes are incorporated into an insulated holder which includes an electrical connector for mating to a high frequency voltage source.

Claims

1. A method of scleral marking comprising the steps of:

(a) providing a hand held apparatus comprising an elongate cylindrical axial electrode having a first end, a tubular outer electrode coaxially disposed around and electrically insulated from said axial electrode, and wherein said first end of said axial electrode extends beyond an end of said outer electrode and is tapered to a point, said taper beginning at about the end of said outer electrode;

(b) providing means electrically connected to said hand held apparatus for applying an electrical power source across said axial and outer electrodes; and

(c) activating said electrical power source while touching said tapered point and the end of said outer electrode to the sclera to produce repeatable marks on the sclera.