Patent US5217477A successfully refreshed from Google Patents.
US5217477A
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US
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Dual width surgical knife
Assignee: Alcon Vision LLC
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Filing: 1992-02-10
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Granted: 1993-06-08
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Expires: 2012-02-10
Abstract
Abstract A surgical knife having a handle and a blade with a first generally V-shaped portion for cutting an incision having a first width of approximately 3.2 millimeters and a second generally arcuate portion for widening the incision to a second width of approximately 5.2 millimeters.
Inventors
- 👤 Paul H. Lager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211; A61F; A61F9/00; A61F9/007; A61F9/013
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
71 words
A surgical knife, comprising: a. a handle; and b. a flat blade having a sharp point, at least a first generally V-shaped portion having straight edges for cutting an incision having a first width of approximately between 3.0 millimeters and 3.4 millimeters and, in tandem with the V-shaped portion, a second generally inwardly arcuate portion for widening the incision to a second width of approximately between 5.0 millimeters and 5.4 millimeters.
Claim 2
Dependent Claim
71 words
A surgical knife, comprising: a. a handle; and b. a flat blade having a sharp point, at least a first generally V-shaped portion having straight edges for cutting an incision having a first width of approximately between 3.0 millimeters and 3.4 millimeters and, in tandem with the V-shaped portion, a second generally inwardly arcuate portion for widening the incision to a second width of approximately between 5.0 millimeters and 5.4 millimeters.
Claim 3
Dependent Claim
14 words
The surgical knife of claim 1 wherein the first width is approximately 3.2 millimeters.
Claim 4
Dependent Claim
14 words
The surgical knife of claim 1 wherein the second width is approximately 5.2 millimeters.
Claim 5
Dependent Claim
12 words
The surgical knife of claim 1 wherein the blade comprises stainless steel.
Claim 6
Dependent Claim
11 words
The surgical knife of claim 1 wherein the blade comprises titanium.
Claim 7
Dependent Claim
12 words
The surgical knife of claim 1 wherein the handle comprises stainless steel.
Claim 8
Dependent Claim
11 words
The surgical knife of claim 1 wherein the handle comprises thermoplastic.
Claim 9
Dependent Claim
11 words
The surgical knife of claim 1 wherein the handle comprises aluminum.
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) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |