US5213569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tip for a tissue phacoemulsification device
Assignee: Individual
•
Filing: 1992-03-31
•
Granted: 1993-05-25
•
Expires: 2012-03-31
Abstract
Abstract Phacoemulsification needles having distal ends with focusing surfaces for concentrating ultrasonic generated acoustic waves. The focusing surfaces can be beveled and/or provided with continuous curved or faceted surfaces.
Inventors
- 👤 Peter L. Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
44 words
A phacoemulsification device, comprising: a needle having a distal end with a lumen, said distal end belveled, and including curvature means, extending around a perimeter of said lumen at said distal end, for increasing the generation of microbubbles and focusing shockwaves to erode tissue.
Claim 2
Dependent Claim
44 words
A phacoemulsification device, comprising: a needle having a distal end with a lumen, said distal end belveled, and including curvature means, extending around a perimeter of said lumen at said distal end, for increasing the generation of microbubbles and focusing shockwaves to erode tissue.
Claim 3
Dependent Claim
38 words
A device according to claim 1, wherein said lumen diameter is preferably in the range of 0.30 to 0.70 millimeters, and the outer diameter of said distal end is preferably in the range of 0.97 to 1.03 millimeters.
Claim 4
Dependent Claim
35 words
A device according to claim 2, wherein said lumen diameter is most preferably in the range of 0.40 to 0.50 millimeters and said outer diameter is preferably in the range of 0.97 to 1.03 millimeters.
Claim 5
Dependent Claim
22 words
A device according to claim 3, wherein said lumen diameter is approximately 0.40 millimeters and said outer diameter is approximately 1.00 millimeters.
Claim 6
Dependent Claim
28 words
A device according to claim 1, wherein said distal end is provided with said beveled end set at an angle in the range of 15 to 60 degrees.
Claim 7
Dependent Claim
30 words
A device according to claim 5, wherein said distal end is provided with said beveled end set at an angle preferably in the range of approximately 15 to 45 degrees.
Claim 8
Dependent Claim
15 words
A device according to claim 6, wherein said beveled end is set at 30 degrees.
Claim 9
Dependent Claim
12 words
A device according to claim 5, wherein said beveled end is flat.
Claim 10
Dependent Claim
15 words
A device according to claim 5, wherein a portion of said beveled end is flat.
Claim 11
Dependent Claim
22 words
A device according to claim 9, wherein said distal end is provided with an outer edge that is at least partially rounded.
Claim 12
Dependent Claim
15 words
A device according to claim 9, wherein said beveled end is provided with a recess.
Claim 13
Dependent Claim
15 words
A device according to claim 11, wherein said recess is defined by a curved surface.
Claim 14
Dependent Claim
15 words
A device according to claim 12, wherein said curved surface is a continuous curved surface.
Claim 15
Dependent Claim
15 words
A device according to claim 12, wherein said curved surface is a faceted curved surface.
Claim 16
Dependent Claim
14 words
A device according to claim 12, wherein said recess surface is a concave surface.
Claim 17
Dependent Claim
23 words
A device according to claim 1, wherein an end face of said distal end is provided with a recess defining said curvature means.
Claim 18
Dependent Claim
15 words
A device according to claim 16, wherein said distal end is provided with said recess.
Claim 19
Dependent Claim
15 words
A device according to claim 16, wherein said recess is defined by a curved surface.
Claim 20
Dependent Claim
15 words
A device according to claim 18, wherein said curved surface is a Gaussian curved surface.
Claim 21
Dependent Claim
19 words
A device according to claim 19, wherein said distal end is provided with said recess in said beveled end.
Claim 22
Dependent Claim
15 words
A device according to claim 18, wherein said curved surface is a continuous curved surface.
Claim 23
Dependent Claim
15 words
A device according to claim 21, wherein said curved surface is a Gaussian curved surface.
Claim 24
Dependent Claim
15 words
A device according to claim 18, wherein said curved surface is a faceted curved surface.
Claim 25
Dependent Claim
15 words
A device according to claim 16, wherein said recess is defined by a concave surface.
Claim 26
Dependent Claim
15 words
A device according to claim 1, where said lumen is centered in the distal end.
Claim 27
Dependent Claim
32 words
A device according to claim 1, wherein said distal end is configured to focus shock waves generated by microbubbles formed at said distal end substantially towards one or more specific focal points.
Claim 28
Dependent Claim
37 words
A device according to claim 1, wherein said lumen has a diameter in the range of approximately 0.25 to 0.75 millimeters, and said distal end an outer diameter in the range of approximately 0.95 to 1.05 millimeters.
Claim 29
Dependent Claim
56 words
A phacoemulsification device, comprising: a needle having a distal end beveled end with a lumen, said distal end including microbubble generation means for increasing the generation of microbubbles and curvature means, extending around a perimeter of said lumen at said distal end, for focusing shockwaves generated from said distal end to enhance the erosion of tissue.
Claim 30
Dependent Claim
56 words
A phacoemulsification device, comprising: a needle having a distal end beveled end with a lumen, said distal end including microbubble generation means for increasing the generation of microbubbles and curvature means, extending around a perimeter of said lumen at said distal end, for focusing shockwaves generated from said distal end to enhance the erosion of tissue.
Claim 31
Dependent Claim
19 words
A device according to claim 28, wherein said microbubble generation means is defined by a substantially wide end face.
Claim 32
Dependent Claim
33 words
A device according to claim 28, wherein said microbubble generation means is at least partially defined by a focusing surface that focuses shockwaves generated by microbubbles generated from said distal end during operation.
Claim 33
Dependent Claim
21 words
A device according to claim 30, wherein said focusing surface is provided substantially as an end face of said distal end.
Claim 34
Dependent Claim
23 words
A device according to claim 31, wherein said focusing surface is defined between said lumen and an outer surface of said distal end.
Claim 35
Dependent Claim
20 words
A device according to claim 32, wherein at least a portion of said focusing surface is a continuous curved surface.
Claim 36
Dependent Claim
20 words
A device according to claim 33, wherein at least a portion of said focusing surface is a faceted curved surface.
Claim 37
Dependent Claim
20 words
A device according to claim 32, wherein at least a portion of said focusing surface is a faceted curved surface.
Claim 38
Dependent Claim
14 words
A device according to claim 32, wherein said curved surface is a rounded surface.
Claim 39
Dependent Claim
15 words
A device according to claim 32, wherein said curved surface is a Gaussian curved surface.
Claim 40
Dependent Claim
20 words
A device according to claim 30, wherein said focusing surface is defined by a flat end face having rounded edges.
Claim 41
Dependent Claim
37 words
A device according to claim 30, wherein said focusing surface is defined by said beveled end, said beveled end further comprising a flat end face having rounded edges and a recess in the beveled flat end face.
Claim 42
Dependent Claim
35 words
A device according to claim 30, wherein said focusing surface is defined by the beveled end, said beveled end further having rounded edges, and a continuous curve extending from said lumen to said rounded edges.
Claim 43
Dependent Claim
16 words
A device according to claim 40, wherein said continuous curved surface is a Gaussian curved surface.
References Cited (Backward Citations)
US3990452A
Cited
US4531934A
Cited
US4689040A
Cited
US4816018A
Cited
US4838853A
Cited
US5092837A
Cited
US5112339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-24 | 1996-11-23 | 1997-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-24 | 2000-11-23 | 2001-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-24 | 2004-11-23 | 2005-05-25 | $7700.00 | Window Closed / Lapsed |