Patent US5885243A successfully refreshed from Google Patents.
US5885243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquefaction handpiece
Assignee: Alcon Research LLC
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Filing: 1996-12-11
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Granted: 1999-03-23
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Expires: 2016-12-11
Abstract
Abstract A surgical handpiece having at least two lumens mounted to a body. One lumen is used for aspiration, the second lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is surrounded by an insulated heating element that heats the surgical fluid as it passes through the second lumen. The handpiece may also contain a device for delivering the surgical fluid through the second lumen in metered pulses of a defined volume.
Inventors
- 👤 Thomas G. Capetan
- 👤 Donald M. Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:57
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61B; A61B18/00; A61B18/04; A61B2018/044; A61B2018/048
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
85 words
A liquefaction handpiece, comprising: a) a body; b) a first irrigation lumen mounted internal to the body; and c) a heater cartridge forming a portion of the first irrigation lumen the heater cartridge mounted internal to the body and made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater being surrounded by an insulator and being capable of heating a surgical fluid within the first irrigation lumen to a temperature of approximately 45° C. to 105° C.
Claim 2
Dependent Claim
85 words
A liquefaction handpiece, comprising: a) a body; b) a first irrigation lumen mounted internal to the body; and c) a heater cartridge forming a portion of the first irrigation lumen the heater cartridge mounted internal to the body and made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater being surrounded by an insulator and being capable of heating a surgical fluid within the first irrigation lumen to a temperature of approximately 45° C. to 105° C.
Claim 3
Dependent Claim
27 words
The handpiece of claim 1 further comprising an injection device in communication with the first irrigation lumen for injecting the surgical fluid into the first irrigation lumen.
Claim 4
Dependent Claim
11 words
The handpiece of claim 1 further comprising a second irrigation lumen.
Claim 5
Dependent Claim
16 words
The handpiece of claim 2 wherein the second irrigation lumen is mounted external to the body.
Claim 6
Dependent Claim
12 words
The handpiece of claim 1 wherein the heater is a resistive wire.
Claim 7
Dependent Claim
70 words
A liquefaction handpiece, comprising: a) a body; b) a first irrigation lumen and an aspiration lumen mounted internal to the body; c) a second irrigation lumen mounted external to the body; and d) a heater cartridge forming a portion of the first irrigation lumen, the heater cartridge being made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater surrounded by an insulator.
Claim 8
Dependent Claim
70 words
A liquefaction handpiece, comprising: a) a body; b) a first irrigation lumen and an aspiration lumen mounted internal to the body; c) a second irrigation lumen mounted external to the body; and d) a heater cartridge forming a portion of the first irrigation lumen, the heater cartridge being made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater surrounded by an insulator.
Claim 9
Dependent Claim
27 words
The handpiece of claim 6 further comprising an injection device in communication with the first irrigation lumen for injecting a surgical fluid into the first irrigation lumen.
Claim 10
Dependent Claim
30 words
The handpiece of claim 6 wherein the heater is capable of heating a surgical fluid within the first irrigation lumen to a temperature of approximately 45° C. to 105° C.
Claim 11
Dependent Claim
12 words
The handpiece of claim 6 wherein the heater is a resistive wire.
Claim 12
Dependent Claim
64 words
A liquefaction handpiece, comprising: a) a body having a hollow interior; b) a first irrigation lumen and an aspiration lumen mounted within the hollow interior; and c) a heater cartridge forming a portion of the first irrigation lumen, the heater cartridge being made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater surrounded by an insulator.
Claim 13
Dependent Claim
64 words
A liquefaction handpiece, comprising: a) a body having a hollow interior; b) a first irrigation lumen and an aspiration lumen mounted within the hollow interior; and c) a heater cartridge forming a portion of the first irrigation lumen, the heater cartridge being made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater surrounded by an insulator.
Claim 14
Dependent Claim
30 words
The handpiece of claim 10 wherein the heater is capable of heating a surgical fluid within the first irrigation lumen to a temperature of approximately 45° C. to 105° C.
Claim 15
Dependent Claim
12 words
The handpiece of claim 10 wherein the heater is a resistive wire.
Claim 16
Dependent Claim
27 words
The handpiece of claim 10 further comprising an injection device in communication with the first irrigation lumen for injecting a surgical fluid into the first irrigation lumen.
Claim 17
Dependent Claim
11 words
The handpiece of claim 10 further comprising a second irrigation lumen.
Claim 18
Dependent Claim
16 words
The handpiece of claim 14 wherein the second irrigation lumen is mounted external to the body.
Claim 19
Dependent Claim
95 words
A liquefaction handpiece, comprising: a) a body having a hollow interior; b) a first irrigation lumen and an aspiration lumen mounted within the hollow body; c) a second irrigation lumen mounted external to the body; d) an injection device in communication with the first irrigation lumen for injecting a surgical fluid into the first irrigation lumen; and e) a heater cartridge forming a portion of the first irrigation lumen, the heater cartridge being made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater surrounded by an insulator.
Claim 20
Dependent Claim
95 words
A liquefaction handpiece, comprising: a) a body having a hollow interior; b) a first irrigation lumen and an aspiration lumen mounted within the hollow body; c) a second irrigation lumen mounted external to the body; d) an injection device in communication with the first irrigation lumen for injecting a surgical fluid into the first irrigation lumen; and e) a heater cartridge forming a portion of the first irrigation lumen, the heater cartridge being made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater surrounded by an insulator.
Claim 21
Dependent Claim
30 words
The handpiece of claim 16 wherein the heater is capable of heating the surgical fluid within the first irrigation lumen to a temperature of approximately 45° C. to 105° C.
Claim 22
Dependent Claim
12 words
The handpiece of claim 16 wherein the heater is a resistive wire.
References Cited (Backward Citations)
US3589363A
Cited
US4078564A
Cited
US4078564B1
Cited
US4223676A
Cited
US4246902A
Cited
US4493694A
Cited
US4515583A
Cited
US4609368A
Cited
US4589415A
Cited
US4922902A
Cited
US4744360A
Cited
US4869715A
Cited
US4989583A
Cited
US5191883A
Cited
US5154694A
Cited
US5261883A
Cited
US5207674A
Cited
US5445637A
Cited
US5445636A
Cited
US5733263A
Cited
WO1996024314A1
Cited
US5616120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-22 | 2002-09-21 | 2003-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-22 | 2006-09-21 | 2007-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-22 | 2010-09-21 | 2011-03-23 | $7700.00 | Window Closed / Lapsed |