US4597388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing cataracts
Assignee: Trutek Research Inc
•
Filing: 1983-12-15
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Granted: 1986-07-01
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Expires: 2003-12-15
Abstract
Abstract A method and apparatus are provided for removing an eye lens having a cataract therein. An electric spark is discharged in a hydraulic medium to cause an electro-hydraulic shock which is focused on or directly conducted to the lens, thereby to liquify the lens, which is then readily flushed from position.
Inventors
- 👤 Jeffrey Koziol
- 👤 Christopher Nowacki
- 👤 Alfred G. Brisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:46
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/225; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745; G; G10; G10K; G10K15/00; G10K15/04; G10K15/06; A61B17/22004; A61B17/22012; A61B17/22022
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
Apparatus for removing an eye lens comprising hydraulic fluid, means for supporting said hydraulic fluid on the eye, means for generating a shock wave in said hydraulic fluid, means for focusing said shock wave comprising reflector means to apply said shock wave through said hydraulic fluid to the lens of said eye to liquify said lens, said reflector means including a portion of an ellipsoid having a first focal point within said reflector means and a second focal point outside of said reflector means, said reflector means being movable to position said second focal point within said lens, the means for generating a shock wave generating said shock wave at the first focal point, and three dimensional aiming means, comprising intersecting laser beams, connected to said reflector means and aimed at said second focal point for locating said second focal point within said lens.
Claim 2
Dependent Claim
144 words
Apparatus for removing an eye lens comprising hydraulic fluid, means for supporting said hydraulic fluid on the eye, means for generating a shock wave in said hydraulic fluid, means for focusing said shock wave comprising reflector means to apply said shock wave through said hydraulic fluid to the lens of said eye to liquify said lens, said reflector means including a portion of an ellipsoid having a first focal point within said reflector means and a second focal point outside of said reflector means, said reflector means being movable to position said second focal point within said lens, the means for generating a shock wave generating said shock wave at the first focal point, and three dimensional aiming means, comprising intersecting laser beams, connected to said reflector means and aimed at said second focal point for locating said second focal point within said lens.
Claim 3
Dependent Claim
20 words
Apparatus as set forth in claim 1 and further including means for mounting an ophthalmic microscope relative to said reflector.
Claim 4
Dependent Claim
19 words
Apparatus as set forth in claim 1 and further including means for illuminating said lens supported from said reflector.
Claim 5
Dependent Claim
19 words
Apparatus as set forth in claim 1 wherein the means for generating a shock wave comprises a spark gap.
Claim 6
Dependent Claim
17 words
Apparatus as set forth in claim 1 and further including means for flushing away the liquified lens.
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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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |