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Patent US4517975A successfully refreshed from Google Patents.
US4517975A
Expired / Lapsed
US
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Electrosurgical electrode for matrisectomy
Assignee: Ellman International Inc
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Filing: 1983-06-06
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Granted: 1985-05-21
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Expires: 2003-06-06
Abstract
Abstract A novel electrosurgical electrode tip with a spade-shaped end having one flat side coated with an insulating coating, especially adapted for a nail matrisectomy procedure.
Inventors
- 👤 Jon C. Garito
- 👤 Alan G. Ellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:59
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/54; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B2018/00053; A61B2018/00107
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
An electrosurgical electrode comprising an elongate one-piece metal member having at one end means for mounting same in a handpiece and at the opposite end a working tip for delivering high frequency currents to animal tissue, said working tip having a thin flat spade-shaped end, and a thin insulating resin coating extending over one flat side of the spade-shaped end leaving the opposite side bare, said coating preventing transfer of high frequency currents to the tissue while allowing such transfer from the bare flat side, said metal member being constituted of a bendable malleable metal allowing bending of the member as well as of the tip by the user to adapt same to the tissue being treated.
Claim 2
Dependent Claim
117 words
An electrosurgical electrode comprising an elongate one-piece metal member having at one end means for mounting same in a handpiece and at the opposite end a working tip for delivering high frequency currents to animal tissue, said working tip having a thin flat spade-shaped end, and a thin insulating resin coating extending over one flat side of the spade-shaped end leaving the opposite side bare, said coating preventing transfer of high frequency currents to the tissue while allowing such transfer from the bare flat side, said metal member being constituted of a bendable malleable metal allowing bending of the member as well as of the tip by the user to adapt same to the tissue being treated.
Claim 3
Dependent Claim
44 words
The electrode of claim 1 wherein said one end comprises an elongated cylindrical shank portion of which the central part is enclosed with an insulating jacket, and the coating on said one flat side of the working tip extends up to the insulating jacket.
Claim 4
Dependent Claim
14 words
The electrode of claim 2 wherein the working tip has a slight outward taper.
Claim 5
Dependent Claim
33 words
The electrode of claim 1 wherein the spade shaped end has a thickness including the coating between about 0.008 and 0.070 inches and the spade width is between about 1 and 4 mm.
Claim 6
Dependent Claim
21 words
The electrode of claim 4 wherein the coating has a smooth outer surface and is constituted of an autoclavable plastic resin.
Claim 7
Dependent Claim
80 words
A medical procedure for partial or complete destruction of an animal nail matrix, comprising the steps of placing an electrosurgical spade shaped electrode with one insulatively coated side underneath the nail fold with the coated side up and with the bare bottom side over the matrix section whose cells are to be destroyed, and passing high frequency currents through the electrode until the matrix sections underlying its bare bottom side are destroyed while preserving tissue parts adjacent its coated side.
Claim 8
Dependent Claim
80 words
A medical procedure for partial or complete destruction of an animal nail matrix, comprising the steps of placing an electrosurgical spade shaped electrode with one insulatively coated side underneath the nail fold with the coated side up and with the bare bottom side over the matrix section whose cells are to be destroyed, and passing high frequency currents through the electrode until the matrix sections underlying its bare bottom side are destroyed while preserving tissue parts adjacent its coated side.
Claim 9
Dependent Claim
30 words
The procedure of claim 6 wherein the spade thickness including the coating is between about 0.008 and 0.070 inches, and the spade width is between about 1 and 4 mm.
Claim 10
Dependent Claim
29 words
The procedure of claim 7 wherein the electrode is constituted of bendable malleable metal, and the electrode is bent in order to facilitate placing same underneath the nail fold.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |