US5423841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intraocular knife
Assignee: Individual
•
Filing: 1994-03-15
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Granted: 1995-06-13
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Expires: 2014-03-15
Abstract
Abstract An ophthalmic surgical device is provided for facilitating a continuous, smooth, curve linear, stress-free, tag-free cut of the anterior capsule which comprises a handle, a blade rotatably mounted to the handle's distal end and a controller on the handle for manually and positively positioning the blade at a desired angular position during movement of the handle.
Inventors
- 👤 Michael S. Kornefeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00754; A61B; A61B17/00; A61B17/32; A61B2017/320052; A61B50/00; A61B50/30; A61B50/3001; A61B2050/3002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
A hand-held surgical instrument for use in performing a continuous, smooth, curvilinear, stress-free, tag-free cut comprising: a handle consisting of two opposed jaws at a distal end of said handle; a blade rotatably mounted to the handle's distal end; and a controlling means on the handle for manually and positively positioning the blade's cutting angle at a desired angular position during movement of the handle by moving the jaws relative to each other along an axis parallel to the jaws to positively position the blade's cutting angle.
Claim 2
Dependent Claim
87 words
A hand-held surgical instrument for use in performing a continuous, smooth, curvilinear, stress-free, tag-free cut comprising: a handle consisting of two opposed jaws at a distal end of said handle; a blade rotatably mounted to the handle's distal end; and a controlling means on the handle for manually and positively positioning the blade's cutting angle at a desired angular position during movement of the handle by moving the jaws relative to each other along an axis parallel to the jaws to positively position the blade's cutting angle.
Claim 3
Dependent Claim
25 words
The surgical instrument of claim 1, including a visible orientation mark associated with the cutting blade and which indicates the plane of the cutting blade.
Claim 4
Dependent Claim
22 words
The surgical instrument of claim 1, wherein the handle includes an orientation mark for initial alignment of the angle of the blade.
Claim 5
Dependent Claim
22 words
The surgical instrument of claim 1, wherein the handle includes a pair of finger platforms which helps the surgeon move the instrument.
Claim 6
Dependent Claim
21 words
The surgical instrument of claim 1, wherein the blade has a round shaft and said blade is secured between the jaws.
Claim 7
Dependent Claim
27 words
The surgical instrument of claim 1, wherein the blade is a rectangular shaft and said blade is inserted into a spool and rotatably mounted between the jaws.
Claim 8
Dependent Claim
21 words
The surgical instrument of claim 1 further comprising a latching mechanism for locking the jaws distal ends in a closed position.
Claim 9
Dependent Claim
43 words
The surgical instrument of claim 7, wherein the latching mechanism includes: a receiver on a first jaw for placement through a slot; a slot on a second jaw for accepting the receiver; and a securing member for locking the receiver in said slot.
Claim 10
Dependent Claim
14 words
The surgical instrument of claim 8, wherein the securing member is a sliding bar.
Claim 11
Dependent Claim
29 words
The surgical instrument of claim 8, wherein the receiver includes: a bracket in said first jaw; and a cylinder and a pivot pin mounting said cylinder to said bracket.
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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) | 1998-06-12 | 1998-12-12 | 1999-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-12 | 2002-12-12 | 2003-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-12 | 2006-12-12 | 2007-06-13 | $7700.00 | Window Closed / Lapsed |