Patent US4307720A successfully refreshed from Google Patents.
US4307720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrocautery apparatus and method and means for cleaning the same
Assignee: TECHNOLOGY CONSORTUIM ASOCIATES A PARTNERSHIP ("TCA")
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Filing: 1979-07-26
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Granted: 1981-12-29
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Expires: 1999-07-26
Abstract
Abstract An improved electrocautery instrument includes a manually retractable-extendable electrode-blade with a vacuum channel disposed therebeneath. A guide in close-spaced relationship to the electrode-blade at the end of the instrument facilitates the scraping off and cleaning of the blade-electrode as it is retracted out of the way to configure the instrument for use as an uncluttered vacuum wand.
Inventors
- 👤 Jaroy Weber, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:26
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1402; A61B2018/00053; A61B2018/00184; A61B2018/00196; A61B2018/00964; A61B2018/0097; A61B2018/00976; A61B2218/00; A61B2218/001; A61B2218/007; A61B2218/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
159 words
A surgical instrument comprising: an elongated body having upper and lower channels extending therethrough, the lower channel serving as a vacuum conduit with a vacuum port therefor disposed at the forward, lower end of the body; guide means disposed in the upper channel near the forward, upper end of the body; an electrode-blade disposed within the upper channel and slidably extendable through the guide means to selectably protrude from the forward end of the body; slider means coupled to and electrically insulated from the electrode-blade and manually operable exteriorly of the body for selectably extending and retracting the electrode-blade through the guide means between completely retracted and extended positions; and means for coupling radio frequency signal to the electrode-blade, said electrode-blade is wider than it is thick; and said guide means is positioned about the electrode-blade in close-spaced, slidable engagement therewith to facilitate the scraping off of any debris adhering to the electrode-blade slidably retracted through the guide means.
Claim 2
Dependent Claim
159 words
A surgical instrument comprising: an elongated body having upper and lower channels extending therethrough, the lower channel serving as a vacuum conduit with a vacuum port therefor disposed at the forward, lower end of the body; guide means disposed in the upper channel near the forward, upper end of the body; an electrode-blade disposed within the upper channel and slidably extendable through the guide means to selectably protrude from the forward end of the body; slider means coupled to and electrically insulated from the electrode-blade and manually operable exteriorly of the body for selectably extending and retracting the electrode-blade through the guide means between completely retracted and extended positions; and means for coupling radio frequency signal to the electrode-blade, said electrode-blade is wider than it is thick; and said guide means is positioned about the electrode-blade in close-spaced, slidable engagement therewith to facilitate the scraping off of any debris adhering to the electrode-blade slidably retracted through the guide means.
Claim 3
Dependent Claim
114 words
Electrocautery apparatus comprising: an elongated body having guide means longitudinally disposed within the body; an electrode slidably mounted within the guide means for selectably extending and retracting through the forward end of the body; slider means coupled to and electrically insulated from the electrode and manually operable exteriorly of the body for selectably extending and retracting the electrode through the forward end of the body between completely retracted and extended positions, and means coupling radio frequency signal to the electrode, said guide means is disposed in close-fitting, slidable engagement about the electrode near the forward end of the body for scraping adherent debris from the electrode in response to manual retraction of the electrode.
Claim 4
Dependent Claim
114 words
Electrocautery apparatus comprising: an elongated body having guide means longitudinally disposed within the body; an electrode slidably mounted within the guide means for selectably extending and retracting through the forward end of the body; slider means coupled to and electrically insulated from the electrode and manually operable exteriorly of the body for selectably extending and retracting the electrode through the forward end of the body between completely retracted and extended positions, and means coupling radio frequency signal to the electrode, said guide means is disposed in close-fitting, slidable engagement about the electrode near the forward end of the body for scraping adherent debris from the electrode in response to manual retraction of the electrode.
Claim 5
Independent Claim
82 words
The method of cleaning an electrocautery apparatus having an electrode protruding from the forward end thereof, comprising the steps of: slidably mounting the electrode within the apparatus; slidably retracting the electrode into the apparatus through the forward end thereof for scraping adherent debris from the electrode thereof under manual operation applied exteriorly of the apparatus; and guiding the slidably-retracting movement of the electrode with close-spaced sliding engagement therewith at the forward end of the apparatus to scrape adherent debris from the electrode.
Claim 6
Independent Claim
82 words
The method of cleaning an electrocautery apparatus having an electrode protruding from the forward end thereof, comprising the steps of: slidably mounting the electrode within the apparatus; slidably retracting the electrode into the apparatus through the forward end thereof for scraping adherent debris from the electrode thereof under manual operation applied exteriorly of the apparatus; and guiding the slidably-retracting movement of the electrode with close-spaced sliding engagement therewith at the forward end of the apparatus to scrape adherent debris from the electrode.
References Cited (Backward Citations)
US1311494A
Cited
US2710000A
Cited
US2894512A
Cited
US3884237A
Cited
US3974833A
Cited
US3828780A
Cited
FR2235669A1
Cited
US3906955A
Cited
US3987795A
Cited
US4137920A
Cited
US4112950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-28 | 1985-06-29 | 1985-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-28 | 1989-06-29 | 1989-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-28 | 1993-06-29 | 1993-12-29 | $7700.00 | Window Closed / Lapsed |