Patent US1653305A successfully refreshed from Google Patents.
Patent US2619133A successfully refreshed from Google Patents.
US4428748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined ultrasonic emulsifier and mechanical cutter for surgery
Assignee: Bausch and Lomb Surgical Inc
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Filing: 1980-04-09
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Granted: 1984-01-31
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Expires: 2000-04-09
Abstract
Abstract A surgical system and apparatus which includes a handpiece with an ultrasonic motor for driving a needle or other instrument with ultrasound and further including a cutting tube or rotary motor that is mounted within the needle such that the tube can cut material which passes through openings in the tube to be engaged by the tube. Irrigation and aspiration is provided and a surgeon may selectively cut with ultrasound, or with the cutting action or with both, as required. The handpiece may be combined with a built-in light source.
Inventors
- 👤 Gholam A. Peyman
- 👤 Notilal Raichand
- 👤 Edward J. Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00745; A61B; A61B17/00; A61B17/32; A61B17/320068; A61B2017/32007; A61B2017/320071; A61M; A61M1/00; A61M1/84; A61M1/85
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
129 words
An ophthalmic medical cutting instrument comprising a handpiece, an outer tube means, an inner tube means coaxially mounted in said outer tube means, a remote connected ultrasonic generator, an ultrasonic motor connected to said ultrasonic generator means and mounted in said handpiece producing signals in a frequency range above 20,000 cycles per second in and through the handpiece for driving said outer tube means for vibratory fragmentation of eye tissue, a separate drive means connected to said inner tube means and mounted in said handpiece for reciprocably driving said inner tube means for shearing eye tissue, and said outer tube having a side opening so that said inner tube can shear eye tissue and said ultrasonic motor means and said separate drive means can be simultaneously or individually operated.
Claim 2
Dependent Claim
129 words
An ophthalmic medical cutting instrument comprising a handpiece, an outer tube means, an inner tube means coaxially mounted in said outer tube means, a remote connected ultrasonic generator, an ultrasonic motor connected to said ultrasonic generator means and mounted in said handpiece producing signals in a frequency range above 20,000 cycles per second in and through the handpiece for driving said outer tube means for vibratory fragmentation of eye tissue, a separate drive means connected to said inner tube means and mounted in said handpiece for reciprocably driving said inner tube means for shearing eye tissue, and said outer tube having a side opening so that said inner tube can shear eye tissue and said ultrasonic motor means and said separate drive means can be simultaneously or individually operated.
Claim 3
Dependent Claim
21 words
A medical instrument according to claim 1 including aspiration means connected to said handpiece to provide aspiration at the cutting site.
Claim 4
Dependent Claim
21 words
A medical instrument according to claim 2 including irrigation means for supplying irrigation fluid to said cutting site through the handpiece.
Claim 5
Dependent Claim
16 words
A medical instrument according to claim 3 wherein said irrigation means supplies fluid through said handpiece.
Claim 6
Dependent Claim
27 words
A medical instrument according to claim 4 wherein said inner tube is hollow and aspiration is accomplished through said side opening and through said hollow inner tube.
Claim 7
Dependent Claim
45 words
A medical instrument according to claim 5 wherein said outer tube is formed with a second side opening through which said irrigation fluid passes after traveling through a passage between the outer surface of said inner tube and the inner surface of said outer tube.
Claim 8
Dependent Claim
29 words
A medical instrument according to claim 6 wherein said aspiration means includes a suction pump and a collection container connected with a suction tube to said hollow inner tube.
Claim 9
Dependent Claim
19 words
A medical instrument according to claim 7 including a control means connected to said pump to control the aspiration.
Claim 10
Dependent Claim
39 words
A medical instrument according to claim 8 wherein said irrigation means includes a supply container and a supply tube connected to said passage between the outer surface of said inner tube and the inner surface of said outer tube.
Claim 11
Dependent Claim
15 words
A medical instrument according to claim 9 including an on-off valve in said supply line.
Claim 12
Dependent Claim
36 words
A medical instrument according to claim 10 including a foot control having a first switch connected to control said valve, a second switch for controlling said pump and a third switch for controlling said ultrasonic generator.
Claim 13
Dependent Claim
24 words
A medical instrument according to claim 11 wherein said drive means is mounted directly in an ultrasonic transformation horn portion of the ultrasonic motor.
Claim 14
Dependent Claim
16 words
A medical instrument according to claim 12 wherein the operating tool is removable from said handpiece.
Claim 15
Dependent Claim
35 words
A medical instrument according to claim 13 wherein said separate ultrasonic generator and said drive means including means for changing the applied frequencies, and their amplitude to match variations in the chopper, and vibrating tool.
Claim 16
Dependent Claim
26 words
A medical instrument according to claim 14 including safety means to turn off said generators if they lose their grounds or the ground to the patient.
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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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |