US5653724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angled phacoemulsifier tip
Assignee: Individual
•
Filing: 1995-10-20
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Granted: 1997-08-05
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Expires: 2015-10-20
Abstract
Abstract An aspiration/irrigation tip adapted for use with a handpiece for the removal of a cataractous lens from the eye is described. The tip, which may be used with an ultrasonic handpiece, is a bent, hollow-bore needle. The shaft of the needle is bent to form a distal invasive portion and a proximal non-invasive portion which attaches to the handpiece. The angle in the shaft enables the surgeon to hold the handpiece at an ergonomically preferred angle with respect to the eye while performing phacoemulsification. Heating of non-target tissues such as the cornea due to friction between the non-target tissue and the vibrating needle is reduced.
Inventors
- 👤 Maurice M. Imonti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:09
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745; A61M; A61M3/00; A61M3/02; A61M3/0279
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A surgical tip operable for conducting mechanical vibrations having a frequency between 38 KHz and 48 KHz from an ultrasonic phacoemulsifier handpiece to a tissue, said tip comprising a hollow elongate tubular member of unitary construction and having; (a) a straight non-invasive proximal portion with attachment means thereon, said attachment means being operable for releasably attaching said non-invasive proximal portion to said handpiece and having a length of 0.295 inches and a central first axis; and (b) an invasive distal portion comprising a straight, elongate, substantially cylindrical member terminating in a beveled distal tip and having an axial length of 0.580 inches and a second central axis; and (c) a bend between said proximal portion and said distal portion wherein said first and said second axis intersect at an angle between 10° and 15°.
Claim 2
Dependent Claim
134 words
A surgical tip operable for conducting mechanical vibrations having a frequency between 38 KHz and 48 KHz from an ultrasonic phacoemulsifier handpiece to a tissue, said tip comprising a hollow elongate tubular member of unitary construction and having; (a) a straight non-invasive proximal portion with attachment means thereon, said attachment means being operable for releasably attaching said non-invasive proximal portion to said handpiece and having a length of 0.295 inches and a central first axis; and (b) an invasive distal portion comprising a straight, elongate, substantially cylindrical member terminating in a beveled distal tip and having an axial length of 0.580 inches and a second central axis; and (c) a bend between said proximal portion and said distal portion wherein said first and said second axis intersect at an angle between 10° and 15°.
Claim 3
Dependent Claim
13 words
The tip of claim 1 wherein said hollow tubular member is stainless steel.
Claim 4
Dependent Claim
12 words
The tip of claim 1 wherein said hollow tubular member is titanium.
Claim 5
Dependent Claim
14 words
The tip of claim 1 wherein one end of said invasive portion is beveled.
Claim 6
Dependent Claim
45 words
The tip of claim 1 further comprising means for delivering an irrigating fluid from said non-invasive portion to said invasive portion of said tip and a means for aspirating a fluid from said invasive portion of said tip to said non-invasive portion of said tip.
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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) | 2000-08-04 | 2001-02-03 | 2001-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-04 | 2005-02-03 | 2005-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-04 | 2009-02-03 | 2009-08-05 | $7700.00 | Window Closed / Lapsed |