Patent US5676649A successfully refreshed from Google Patents.
US5676649A
Expired / Lapsed
US
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Phacoemulsification cutting tip
Assignee: Alcon Research LLC
•
Filing: 1996-10-04
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Granted: 1997-10-14
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Expires: 2016-10-04
Abstract
Abstract A cutting tip having an asymmetric, hydrodynamic channel that tightens the cutting tip during operation.
Inventors
- 👤 Mikhail Boukhny
- 👤 James Y. Chon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:16
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A phacoemulsification tip, comprising: a) a tubular shaft having a longitudinal axis, a distal end and a proximal end; and b) a hub connected to the shaft at the distal end, the hub containing at least one wrenching flat and at least one hydrodynamic channel, the channel being asymmetric about the longitudinal axis.
Claim 2
Dependent Claim
53 words
A phacoemulsification tip, comprising: a) a tubular shaft having a longitudinal axis, a distal end and a proximal end; and b) a hub connected to the shaft at the distal end, the hub containing at least one wrenching flat and at least one hydrodynamic channel, the channel being asymmetric about the longitudinal axis.
Claim 3
Dependent Claim
16 words
The cutting tip of claim 1 wherein the hub contains a pair of asymmetric, hydrodynamic channels.
Claim 4
Dependent Claim
32 words
The cutting tip of claim 1 wherein the hydrodynamic channel is cut into the hub at the wrenching flat and at an angle of approximately 45 degrees relative to the longitudinal axis.
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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) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |