Patent US4642090A successfully refreshed from Google Patents.
US4642090A
Expired / Lapsed
US
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Disposable combination scalpel blade and incision irrigator for ophthalmological use
Assignee: Individual
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Filing: 1985-03-04
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Granted: 1987-02-10
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Expires: 2005-03-04
Abstract
Abstract A disposable irrigating combination scalpel blade and incision irrigator provided with a hollow scalpel handle from which extends the scalpel blade and a cannula connected to the interior of the hollow blade handle and positioned within a critical angular range to the cutting edge of the scalpel so as to permit continuous washing away of blood during the surgical procedure. A flow of fluid to the cannula through the hollow scalpel handle is controlled by a foot pedal operated by the surgeon leaving one hand free for manipulation of the scalpel blade and the other hand free to hold other instruments such as forceps used in the surgical procedures.
Inventors
- 👤 Peter J. Utrata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:03
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61F; A61F9/00; A61F9/007; A61F9/013; A61F9/0133; A61B2017/00973; A61B2217/00; A61B2217/002; A61B2217/007; A61M; A61M3/00; A61M3/02; A61M3/0204; A61M3/0208; A61M3/022; A61M3/0279
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
194 words
A disposable combination scalpel handle blade and an incision irrigator for ophthalmological use comprising: a hollow scalpel handle closed at one end and open at the other end, said open end being adapted to receive and frictionally hold a flexible tube, said closed end having a scalpel blade provided with a cutting edge thereon and fixedly secured in the closed end of said scalpel handle and extending outwardly from said closed end and approximately coaxial therewith, said closed end of said scalpel handle also having a cannula, fixedly secured therein and extending from said closed end of said handle and disposed parallel to said scalpel blade at said closed end at an angle so that fluid flowing through said cannula will impinge only upon the cutting edge of said scalpel blade, and said cannula being fluidwise connected to the interior of said hollow scalpel handle, whereby blood and debris from the incision being made by the cutting edge of said scalpel blade is washed away and the fluid does not obscure the surgeon's view so that the surgeon will have a clear view of the area in which he wishes to extend his incision.
Claim 2
Dependent Claim
194 words
A disposable combination scalpel handle blade and an incision irrigator for ophthalmological use comprising: a hollow scalpel handle closed at one end and open at the other end, said open end being adapted to receive and frictionally hold a flexible tube, said closed end having a scalpel blade provided with a cutting edge thereon and fixedly secured in the closed end of said scalpel handle and extending outwardly from said closed end and approximately coaxial therewith, said closed end of said scalpel handle also having a cannula, fixedly secured therein and extending from said closed end of said handle and disposed parallel to said scalpel blade at said closed end at an angle so that fluid flowing through said cannula will impinge only upon the cutting edge of said scalpel blade, and said cannula being fluidwise connected to the interior of said hollow scalpel handle, whereby blood and debris from the incision being made by the cutting edge of said scalpel blade is washed away and the fluid does not obscure the surgeon's view so that the surgeon will have a clear view of the area in which he wishes to extend his incision.
Claim 3
Dependent Claim
27 words
The device of claim 1 wherein the end of said cannula extending from said closed end of said handle forms an acute angle with said scalpel blade.
Claim 4
Dependent Claim
14 words
The device of claim 2 wherein said acute angle is between 0° and 6°.
Claim 5
Dependent Claim
12 words
The device of claim 2 wherein said acute angle is approximately 4°.
Claim 6
Dependent Claim
44 words
The combination scalpel blade and incision irrigator of claim 1 wherein said scalpel handle comprises two parts, said first part comprising a holow interior, and said second part having a scalpel blade fixedly secured therein, said first and second parts being detachably secured together.
Claim 7
Dependent Claim
29 words
The device of claim 5 wherein said first part of said scalpel handle is made of metal and said second part of said scalpel handle is made of plastic.
Claim 8
Dependent Claim
18 words
The device of claim 6 wherein said first and second parts of said scalpel handle are threadedly connected.
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) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |