US4622966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical cutting device
Assignee: Gyrus ACMI Inc
•
Filing: 1984-07-16
•
Granted: 1986-11-18
•
Expires: 2004-07-16
Abstract
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.
Inventors
- 👤 Robert W. Beard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:53
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61B17/3213; A61B18/00; A61B18/04; A61B18/08; A61B18/082; B; B23; B23P; B23P15/00; B23P15/28; B23P15/40; B26; B26B; B26B3/00; B26B7/00; A61B2017/00831; A61B2017/00853; A61B2018/00053; A61B2018/00107; A61B2018/00964; A61B2018/0097; A61B18/12; A61B18/14; A61B2018/1405; A61B2018/1412
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
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.
Claim 2
Dependent Claim
122 words
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.
Claim 3
Dependent Claim
33 words
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.
Claim 4
Dependent Claim
45 words
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.
Claim 5
Dependent Claim
17 words
The instrument claimed in claim 3 wherein said filler material contains a plurality of industrial grade diamonds.
Claim 6
Dependent Claim
29 words
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.
Claim 7
Dependent Claim
42 words
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.
Claim 8
Dependent Claim
15 words
The instrument claimed in claim 6 wherein the fluorocarbon of said non-stick means is teflon.
References Cited (Backward Citations)
US29088A
Cited
US30190A
Cited
US2250602A
Cited
US2866068A
Cited
US2960592A
Cited
US3208142A
Cited
US3513539A
Cited
US3434476A
Cited
US3352011A
Cited
US4198957A
Cited
US3685518A
Cited
US4185632A
Cited
US4089336A
Cited
US4209017A
Cited
US3786814A
Cited
US4091813A
Cited
US4119836A
Cited
US4139760A
Cited
US4231371A
Cited
US4232676A
Cited
US4314559A
Cited
US4333467A
Cited
US4412123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |