US6126629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple port phaco needle
Assignee: Bausch and Lomb Inc
•
Filing: 1998-12-18
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Granted: 2000-10-03
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Expires: 2018-12-18
Abstract
Abstract The present invention provides a phacoemulsification needle having an improved distal tip. The distal tip is provided with a generally rounded closed distal end having a plurality of longitudinally extending ports provided therein communicating between the interior lumen of the needle and exteriorly of the needle. The outer surface of the distal end is rounded to provide a smooth surface so as to not cut or snag an eye tissue. Two embodiments of the phacoemulsification needles are shown having five and nine ports therethrough, respectively.
Inventors
- 👤 James Taylor Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:54
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745; A61B; A61B17/00; A61B17/32; A61B17/320068; A61B2017/320072; A61B2017/320073; A61B2017/32008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are five (5) ports extending through the closed distal end; and wherein the phacoemulsification needle is made of metal and the rounded surface closed distal end has approximally 0.00119 square inches of metal material at the distal tip to aid in the creation of cavitation at said tip.
Claim 2
Dependent Claim
157 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are five (5) ports extending through the closed distal end; and wherein the phacoemulsification needle is made of metal and the rounded surface closed distal end has approximally 0.00119 square inches of metal material at the distal tip to aid in the creation of cavitation at said tip.
Claim 3
Dependent Claim
157 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are nine (9) ports extending through the closed distal end; and wherein the phacoemulsification needle is made of metal and the rounded surface closed distal end has approximately 0.00119 square inches of metal material at the distal tip to aid in the creation of cavitation at said tip.
Claim 4
Dependent Claim
157 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are nine (9) ports extending through the closed distal end; and wherein the phacoemulsification needle is made of metal and the rounded surface closed distal end has approximately 0.00119 square inches of metal material at the distal tip to aid in the creation of cavitation at said tip.
Claim 5
Dependent Claim
141 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are five (5) ports extending through the closed distal end; and wherein the distal tip has ports with a diameter of approximately 0.007 inches to provide adequate fluid flow through said tip.
Claim 6
Dependent Claim
141 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are five (5) ports extending through the closed distal end; and wherein the distal tip has ports with a diameter of approximately 0.007 inches to provide adequate fluid flow through said tip.
Claim 7
Dependent Claim
141 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are nine (9) ports extending through the closed distal end; and wherein the distal tip has ports with a diameter of approximately 0.005 inches to provide adequate fluid flow through said tip.
Claim 8
Dependent Claim
141 words
In a phacoemulsification needle having a proximal end attachable to a phacoemulsification handpiece and a distal end for insertion into an eye; the needle having a central longitudinal axis extending from the proximal end to the distal end; a bore within the needle concentric to the central axis thereof, forming a lumen, the lumen having sidewalls therearound, including inner and outer surfaces with an opening at the proximal end of the needle, an improved distal tip comprising: a distal end having a smoothly rounded surface closed distal end; a plurality of ports positioned through the closed distal end communicating between the lumen and exteriorly to the needle; wherein there are nine (9) ports extending through the closed distal end; and wherein the distal tip has ports with a diameter of approximately 0.005 inches to provide adequate fluid flow through said tip.
References Cited (Backward Citations)
US4531934A
Cited
US4689040A
Cited
US4816018A
Cited
US4643717A
Cited
US4869715A
Cited
US5151099A
Cited
US5154694A
Cited
US4959049A
Cited
US5084009A
Cited
USD357313S
Cited
US5213569A
Cited
WO1994008518A1
Cited
US5451229A
Cited
US5417654A
Cited
US5743871A
Cited
US5836959A
Cited
US5746713A
Cited
US5788679A
Cited
US5676649A
Cited
WO1998014148A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-03 | 2004-04-03 | 2004-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-03 | 2008-04-03 | 2008-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-03 | 2012-04-03 | 2012-10-03 | $7700.00 | Window Closed / Lapsed |