US5197962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite electrosurgical medical instrument
Assignee: MegaDyne Medical Products Inc
•
Filing: 1992-07-22
•
Granted: 1993-03-30
•
Expires: 2012-07-22
Abstract
Abstract An electrosurgical instrument for causing hemostasis having a first predetermined region for contact with flesh or tissue, said instrument being coated over at least a portion of said predetermined region by a composite coating consisting essentially of a nickel-phosphorous matrix having particles of polytetrafluoroethylene distributed substantially uniformly therein.
Inventors
- 👤 Matthias R. Sansom
- 👤 Richard L. Ellingson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B2018/00053; A61B2018/00059; A61B2018/00071; A61B2018/00083; A61B2018/00107; A61B2018/1467
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
An electrosurgical instrument to which electric current can be applied for causing hemostasis, having an electrically conductive predetermined region for contact with flesh or tissue, said instrument being coated over at least a portion of said predetermined region by a composite coating consisting essentially of a nickel-phosphorous matrix having particles of polytetrafluoroethylene distributed substantially uniformly therethrough.
Claim 2
Dependent Claim
56 words
An electrosurgical instrument to which electric current can be applied for causing hemostasis, having an electrically conductive predetermined region for contact with flesh or tissue, said instrument being coated over at least a portion of said predetermined region by a composite coating consisting essentially of a nickel-phosphorous matrix having particles of polytetrafluoroethylene distributed substantially uniformly therethrough.
Claim 3
Dependent Claim
17 words
The electrosurgical instrument of claim 2 wherein said entire predetermined region is coated with said composite coating.
Claim 4
Dependent Claim
14 words
The electrosurgical instrument of claim 2 wherein said instrument is an electrosurgical blade electrode.
Claim 5
Dependent Claim
18 words
The electrosurgical instrument of claim 3 wherein the thickness of said coating is about 0.1 to 0.5 mil.
Claim 6
Dependent Claim
13 words
The electrosurgical instrument of claim 2 wherein said instrument is a coagulation forceps.
Claim 7
Dependent Claim
18 words
The electrosurgical instrument of claim 5 wherein the thickness of said coating is about 0.1 to 0.5 mil.
References Cited (Backward Citations)
US4161950A
Cited
US4302374A
Cited
US4314559A
Cited
US4333467A
Cited
US4868066A
Cited
US4862890A
Cited
US5030218A
Cited
US4981756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |