CA2214566A1 - Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery - Google Patents

Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery

Info

Publication number
CA2214566A1
CA2214566A1 CA002214566A CA2214566A CA2214566A1 CA 2214566 A1 CA2214566 A1 CA 2214566A1 CA 002214566 A CA002214566 A CA 002214566A CA 2214566 A CA2214566 A CA 2214566A CA 2214566 A1 CA2214566 A1 CA 2214566A1
Authority
CA
Canada
Prior art keywords
during surgery
reducing friction
heat generation
device during
improved method
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
CA002214566A
Other languages
French (fr)
Other versions
CA2214566C (en
Inventor
Richard Mackool
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.)
Novartis AG
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
Priority to CA002303355A priority Critical patent/CA2303355C/en
Publication of CA2214566A1 publication Critical patent/CA2214566A1/en
Application granted granted Critical
Publication of CA2214566C publication Critical patent/CA2214566C/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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/0084—Material properties low friction
    • A61B2017/00845—Material properties low friction of moving parts with respect to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320068—Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320084—Irrigation sleeves

Abstract

A surgical instrument for removing tissue, such as a cataract, from a patient's body includes a hollow, vibrating needle surrounded by one or two hollow infusion sleeves. Reducing friction between the surfaces of the sleeves and the outer surface of the needle, and/or surrounding ocular tissue, dramatically reduces the amount of heat generated during surgery, thus reducing the possibility of thermal damage to tissue.
CA002214566A 1995-03-08 1996-03-06 Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery Expired - Lifetime CA2214566C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002303355A CA2303355C (en) 1995-03-08 1996-03-06 Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/400,802 1995-03-08
US08/400,802 US5505693A (en) 1994-12-30 1995-03-08 Method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery
PCT/US1996/003058 WO1996027334A1 (en) 1995-03-08 1996-03-06 Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002303355A Division CA2303355C (en) 1995-03-08 1996-03-06 Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery

Publications (2)

Publication Number Publication Date
CA2214566A1 true CA2214566A1 (en) 1996-09-12
CA2214566C CA2214566C (en) 2001-08-14

Family

ID=23585083

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002214566A Expired - Lifetime CA2214566C (en) 1995-03-08 1996-03-06 Improved method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery

Country Status (7)

Country Link
US (1) US5505693A (en)
EP (1) EP0813389A4 (en)
JP (1) JPH11501543A (en)
AU (1) AU704803B2 (en)
CA (1) CA2214566C (en)
DE (1) DE29623148U1 (en)
WO (1) WO1996027334A1 (en)

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US5505693A (en) 1996-04-09
AU704803B2 (en) 1999-05-06
EP0813389A1 (en) 1997-12-29
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CA2214566C (en) 2001-08-14
JPH11501543A (en) 1999-02-09

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