US5030218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of blade of electrosurgical instrument
Assignee: Individual
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Filing: 1989-10-26
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Granted: 1991-07-09
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Expires: 2009-10-26
Abstract
Abstract An electrosurgical blade to which eschar is less adherent, and which therefore requires less interruption during the operation for cleaning of the blade. The blade is of niobium covered by coating of niobium oxide.
Inventors
- 👤 Lee Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:34
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1402; A61B17/00; A61B17/00234; A61B2017/00292; A61B2018/00053; A61B2018/00107; A61B2018/00119
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
An electrosugical instrument for use with a source of radio frequency electrical energy comprising in combination: (a) a handle having an aperture into which a portion of a blade is inserted and through which electrical energy is passed; (b) a blade; (c) said blade having a first section comprising a stainless steel shaft fitting into the aperture of said handle; (d) said stainless steel shaft having an axial aperture at the end opposite the end fitting into said handle; (e) said blade having a second section of a second metal, one end of which is elongated and flattened, the other end of which is circular and fits within the axial aperture of said stainless steel section; (f) said second section of the blade being covered with niobium oxide, whereby the niobium-niobium oxide blade provides a more stick resistent surface for electrosurgery.
Claim 2
Dependent Claim
141 words
An electrosugical instrument for use with a source of radio frequency electrical energy comprising in combination: (a) a handle having an aperture into which a portion of a blade is inserted and through which electrical energy is passed; (b) a blade; (c) said blade having a first section comprising a stainless steel shaft fitting into the aperture of said handle; (d) said stainless steel shaft having an axial aperture at the end opposite the end fitting into said handle; (e) said blade having a second section of a second metal, one end of which is elongated and flattened, the other end of which is circular and fits within the axial aperture of said stainless steel section; (f) said second section of the blade being covered with niobium oxide, whereby the niobium-niobium oxide blade provides a more stick resistent surface for electrosurgery.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |