Surgical cutting device

• US 4,622,966 A
• Filed: 07/16/1984
• Issued: 11/18/1986
• Est. Priority Date: 06/30/1981
• Status: Expired due to Term

• Current Assignee: Gyrus ACMI, Inc. (Olympus Corporation)
• Original Assignee: Abbott Laboratories
• Inventors: Beard, Robert W.
• Primary Examiner(s): Coven, Edward M.
• Assistant Examiner(s): Hindenburg, Max F.
• Application Number:
  US06/631,536
• Time in Patent Office: 855 Days
• Field of Search: 128/305, 128/303.1, 128/303.14, 128/303.17, 219/233, 219/241, 219/499, 30/140
• US Class Current: 606/28
• CPC Class Codes: A61B 17/3213 with detachable blades
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61B 2017/00853 low friction, hydrophobic and corrosion-resistant fluorocarbon resin coating (ptf, ptfe, polytetrafluoroethylene)
• CPC Class Codes: A61B 2018/00107 Coatings on the energy applicator
• CPC Class Codes: A61B 2018/0097 Cleaning probe surfaces
• CPC Class Codes: A61B 2018/1412 Blade
• CPC Class Codes: B23P 15/40 shearing tools
• CPC Class Codes: B26B 3/00 Hand knives with fixed blades handles, attaching the handles B25G
• CPC Class Codes: B26B 7/00 Hand knives with reciprocating motor-driven blades

Abstract

The cutting instrument of this invention is made by threading a heater assembly through a hollow cutting instrument body. A blade having a shank and a blade body including a cutting edge is secured within the hollow cutting instrument body at its shank portion such that the blade body extends from the hollow cutting instrument body. The heating assembly is secured to the blade body and to the cutting instrument body. The blade body is coated with a non-stick means.

Claims

1. A surgical instrument capable of being heated to a predetermined temperature within a predetermined temperature range, comprising:

a blade body having

a steel substrate with a cutting edge and

a copper composition having a yield strength of at least 25,000 p.s.i. laminated to said steel substrate, but not extending so as to cover the cutting edge of said steel substrate;

a hollow cutting instrument body which engages the blade body;

heater means passing through said hollow cutting instrument body and directly interfacing and secured at its proximal end to said blade body and at its distal end to said cutting instrument body; and

non-stick means coated on said cutting edge and at least a portion of the balance of said blade body.

2. The instrument claimed in claim 1 wherein said copper composition is an alumina dispersion strengthened copper, said alumina being present in said laminate from between about 0.1 and about 0.5 percent by weight.

3. The instrument claimed in claim 1 wherein said heater means is secured to said copper composition by means of an adhesive which includes an electrically insulative and thermally conductive filler material admixed with a material selected from the group consisting of acrylic and epoxy resins.

4. The instrument claimed in claim 3 wherein said filler material contains a plurality of industrial grade diamonds.

5. The instrument claimed in claim 4 wherein the diameter of at least some of said diamonds is substantially the same as the distance between said laminate and said heater.

6. The instrument claimed in claim 1 wherein said non-stick means applied to said cutting edge is a dispersion of fluorocarbon particles within a silicon adhesive binder and the non-stick means applied to the balance of said cutting instrument is a fluorocarbon composition.

7. The instrument claimed in claim 6 wherein the fluorocarbon of said non-stick means is teflon.