Patent US5269781A successfully refreshed from Google Patents.
US5269781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction-assisted electrocautery unit
Assignee: Individual
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Filing: 1992-06-10
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Granted: 1993-12-14
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Expires: 2012-06-10
Abstract
Abstract Smoke emitted during an electrocautery procedure may be removed from the environment of the procedure through the use of an electrocautery knife having an elongated handle provided with an inlet port at the end of the handle mounting the knife blade, an outlet port at the opposite end of the handle and adapted to be connected to available suction or vacuum, and an internal passage extending between the ports.
Inventors
- 👤 Todd S. Hewell, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:34
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1402; A61B2218/00; A61B2218/001; A61B2218/007; A61B2218/008
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
An electrocautery knife comprising: an elongated handle having opposite ends; a metallic blade mounted at one of said ends; an electrical conductor at or near the other of said ends; control means mounted in said handle and operatively associated with said blade and said electrical conductor for controlling the heating of said blade; an inlet port in said handle in proximity to said blade adjacent said one end, said inlet port being generally U-shaped about said blade; an outlet port in said handle at or near said other end; and a passage within said handle interconnecting said ports; whereby said outlet may be connected to a vacuum source so that smoke generated at said blade during an electrocautery procedure will be drawn into said U-shaped inlet through said passage to the vacuum source.
Claim 2
Dependent Claim
133 words
An electrocautery knife comprising: an elongated handle having opposite ends; a metallic blade mounted at one of said ends; an electrical conductor at or near the other of said ends; control means mounted in said handle and operatively associated with said blade and said electrical conductor for controlling the heating of said blade; an inlet port in said handle in proximity to said blade adjacent said one end, said inlet port being generally U-shaped about said blade; an outlet port in said handle at or near said other end; and a passage within said handle interconnecting said ports; whereby said outlet may be connected to a vacuum source so that smoke generated at said blade during an electrocautery procedure will be drawn into said U-shaped inlet through said passage to the vacuum source.
Claim 3
Dependent Claim
138 words
An electrocautery knife comprising: an elongated handle having opposite ends; a metallic blade mounted at one of said ends; an electrical conductor at or near the other of said ends; control means mounted in said handle and operatively associated with said blade and said electrical conductor for controlling the heating of said blade; an inlet port in said handle in proximity to said blade adjacent said one end, said inlet port being generally U-shaped about said blade and located under said blade; an outlet port in said handle at or near said other end; and a passage within said handle interconnecting said ports; whereby said outlet may be connected to a vacuum source so that smoke generated at said blade during an electrocautery procedure will be drawn into said U-shaped inlet through said passage to the vacuum source.
Claim 4
Dependent Claim
138 words
An electrocautery knife comprising: an elongated handle having opposite ends; a metallic blade mounted at one of said ends; an electrical conductor at or near the other of said ends; control means mounted in said handle and operatively associated with said blade and said electrical conductor for controlling the heating of said blade; an inlet port in said handle in proximity to said blade adjacent said one end, said inlet port being generally U-shaped about said blade and located under said blade; an outlet port in said handle at or near said other end; and a passage within said handle interconnecting said ports; whereby said outlet may be connected to a vacuum source so that smoke generated at said blade during an electrocautery procedure will be drawn into said U-shaped inlet through said passage to the vacuum source.
Claim 5
Dependent Claim
136 words
An electrocautery knife comprising: an elongated handle having opposite ends; a metallic blade mounted at one of said ends; an electrical conductor at or near the other of said ends; control means mounted in said handle and operatively associated with said blade and said electrical conductor for controlling the heating of said blade; an inlet port in said handle in proximity to said blade adjacent said one end, said inlet port having a generally inverted, U-shaped configuration about said blade; an outlet port in said handle at or near said other end; and a passage within said handle interconnecting said ports; whereby said outlet may be connected to a vacuum source so that smoke generated at said blade during an electrocautery procedure will be drawn into said U-shaped inlet through said passage to the vacuum source.
Claim 6
Dependent Claim
136 words
An electrocautery knife comprising: an elongated handle having opposite ends; a metallic blade mounted at one of said ends; an electrical conductor at or near the other of said ends; control means mounted in said handle and operatively associated with said blade and said electrical conductor for controlling the heating of said blade; an inlet port in said handle in proximity to said blade adjacent said one end, said inlet port having a generally inverted, U-shaped configuration about said blade; an outlet port in said handle at or near said other end; and a passage within said handle interconnecting said ports; whereby said outlet may be connected to a vacuum source so that smoke generated at said blade during an electrocautery procedure will be drawn into said U-shaped inlet through said passage to the vacuum source.
References Cited (Backward Citations)
US4562838A
Cited
US5085657A
Cited
US4744360A
Cited
US4719914A
Cited
US4960419A
Cited
US4919129A
Cited
US5061268A
Cited
US5088997A
Cited
US5071418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |