CA2305297A1 - Control system for a phacoemulsification handpiece - Google Patents

Control system for a phacoemulsification handpiece Download PDF

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Publication number
CA2305297A1
CA2305297A1 CA002305297A CA2305297A CA2305297A1 CA 2305297 A1 CA2305297 A1 CA 2305297A1 CA 002305297 A CA002305297 A CA 002305297A CA 2305297 A CA2305297 A CA 2305297A CA 2305297 A1 CA2305297 A1 CA 2305297A1
Authority
CA
Canada
Prior art keywords
drive signal
handpiece
fed
control system
varying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002305297A
Other languages
French (fr)
Other versions
CA2305297C (en
Inventor
Mikhail Boukhny
Ahmad Salehi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcon Vision LLC
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2305297A1 publication Critical patent/CA2305297A1/en
Application granted granted Critical
Publication of CA2305297C publication Critical patent/CA2305297C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00745—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments using mechanical vibrations, e.g. ultrasonic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • B06B1/0238—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave
    • B06B1/0246—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal
    • B06B1/0253—Driving circuits for generating signals continuous in time of a single frequency, e.g. a sine-wave with a feedback signal taken directly from the generator circuit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00681—Aspects not otherwise provided for
    • A61B2017/00725—Calibration or performance testing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/40—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups with testing, calibrating, safety devices, built-in protection, construction details

Abstract

A system and method for tuning and controlling ultrasonic handpieces by varying the frequency of the drive signal that is fed to the handpiece by a discrete dither increment. A digital signal processor may be used to measure the response of the handpiece to the varying drive signal and compare these responses to determine the probable value of the actual series resonance. The output of the digital signal processor is used to generate control parameters embodied within an appropriate control signal, which is fed to the source of the drive signal in order to alter aspects of the drive signal.
CA002305297A 1997-10-15 1998-04-07 Control system for a phacoemulsification handpiece Expired - Lifetime CA2305297C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/950,162 US5938677A (en) 1997-10-15 1997-10-15 Control system for a phacoemulsification handpiece
US08/950,162 1997-10-15
PCT/US1998/007279 WO1999018901A1 (en) 1997-10-15 1998-04-07 Control system for a phacoemulsification handpiece

Publications (2)

Publication Number Publication Date
CA2305297A1 true CA2305297A1 (en) 1999-04-22
CA2305297C CA2305297C (en) 2005-02-15

Family

ID=25490043

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002305297A Expired - Lifetime CA2305297C (en) 1997-10-15 1998-04-07 Control system for a phacoemulsification handpiece

Country Status (11)

Country Link
US (1) US5938677A (en)
EP (1) EP1027021B1 (en)
JP (1) JP3805980B2 (en)
AT (1) ATE282384T1 (en)
AU (1) AU727779B2 (en)
BR (1) BR9814865B1 (en)
CA (1) CA2305297C (en)
DE (1) DE69827659T2 (en)
ES (1) ES2231981T3 (en)
PT (1) PT1027021E (en)
WO (1) WO1999018901A1 (en)

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WO2006128307A1 (en) * 2005-06-03 2006-12-07 Jocelyn Perron Multi-level external window shutter

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US10258505B2 (en) 2010-09-17 2019-04-16 Alcon Research, Ltd. Balanced phacoemulsification tip
US9463042B2 (en) * 2011-06-13 2016-10-11 P Tech, Llc Methods and systems for controlling an ultrasonic handpiece based on sensed pressure
US8414605B2 (en) 2011-07-08 2013-04-09 Alcon Research, Ltd. Vacuum level control of power for phacoemulsification hand piece
US9050627B2 (en) 2011-09-02 2015-06-09 Abbott Medical Optics Inc. Systems and methods for ultrasonic power measurement and control of phacoemulsification systems
US11191669B2 (en) 2012-03-26 2021-12-07 Johnson & Johnson Surgical Vision, Inc. Tapered structure in a phacoemulsification device for node placement
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US11638660B2 (en) 2018-06-05 2023-05-02 Carl Zeiss Meditec Cataract Technology Inc. Ophthalmic microsurgical tools, systems, and methods of use
WO2020160434A1 (en) 2019-02-01 2020-08-06 Carl Zeiss Meditec Cataract Technology Inc. Ophthalmic cutting instruments having integrated aspiration pump
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WO2006128307A1 (en) * 2005-06-03 2006-12-07 Jocelyn Perron Multi-level external window shutter

Also Published As

Publication number Publication date
DE69827659T2 (en) 2005-12-08
EP1027021A1 (en) 2000-08-16
CA2305297C (en) 2005-02-15
JP3805980B2 (en) 2006-08-09
JP2001519228A (en) 2001-10-23
BR9814865B1 (en) 2010-11-30
PT1027021E (en) 2005-03-31
AU727779B2 (en) 2000-12-21
ES2231981T3 (en) 2005-05-16
AU7109398A (en) 1999-05-03
BR9814865A (en) 2000-10-03
EP1027021B1 (en) 2004-11-17
DE69827659D1 (en) 2004-12-23
US5938677A (en) 1999-08-17
ATE282384T1 (en) 2004-12-15
WO1999018901A1 (en) 1999-04-22

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EEER Examination request
MKEX Expiry

Effective date: 20180409