WO2000057799A1 - Appareil permettant l'insertion d'une lame dans des keratomes - Google Patents

Appareil permettant l'insertion d'une lame dans des keratomes Download PDF

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Publication number
WO2000057799A1
WO2000057799A1 PCT/US2000/007705 US0007705W WO0057799A1 WO 2000057799 A1 WO2000057799 A1 WO 2000057799A1 US 0007705 W US0007705 W US 0007705W WO 0057799 A1 WO0057799 A1 WO 0057799A1
Authority
WO
WIPO (PCT)
Prior art keywords
keratome
blade
blade holder
assembly
housing
Prior art date
Application number
PCT/US2000/007705
Other languages
English (en)
Other versions
WO2000057799A9 (fr
Inventor
Randall M. Meador
Michael L. Kliewer
Stan L. Smith
Original Assignee
Lasersight Technologies, Inc.
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 Lasersight Technologies, Inc. filed Critical Lasersight Technologies, Inc.
Priority to AU37701/00A priority Critical patent/AU3770100A/en
Publication of WO2000057799A1 publication Critical patent/WO2000057799A1/fr
Publication of WO2000057799A9 publication Critical patent/WO2000057799A9/fr

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
    • A61F9/013—Instruments for compensation of ocular refraction ; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea

Definitions

  • the present invention relates generally to a device used for inserting a blade into a keratome while protecting the blade edge and preventing contamination of the sterile blade
  • Keratomes are used primarily in LASIK corrective eye procedures to generate a flap in the cornea After the flap is generated, laser refractive surgery is performed on the cornea to correct for eyesight conditions such as myopia, hyperopia, and astigmatism Typically, a stainless steel surgical blade is used as the cutting surface in the keratome and the sterile blade is disposed of after the procedure is completed
  • the blade edge is very sharp and the sharpness and integrity of the edge of the blade determines the cutting quality
  • the state of the art is to use forceps or tweezers to manually pick up the bare blade and place the bare blade into the keratome
  • handling of the bare blade in such a manner may compromise the integrity of the blade and/or may greatly increase the chance of contamination of the blade
  • An object of the invention is to fulfill the need referred to above In accordance with the principles of the present invention, this objective is achieved by providing an apparatus for inserting a blade into a keratome
  • the apparatus includes a blade holder and a blade having a cutting edge
  • the blade is coupled with the blade holder thereby defining a blade holder assembly
  • a housing assembly is provided and the blade holder assembly is disposed in the housing assembly for movement with respect to the housing assembly
  • the housing assembly is constructed and arranged to protect the cutting edge of the blade and to receive a keratome
  • An ejector is constructed and arranged to move the blade holder assembly in the housing assembly and into a keratome when a keratome is received by the housing assembly Thereafter, the ejector may move the keratome from the housing assembly
  • a method of loading a blade into a keratome includes providing a housing assembly carrying a blade holder assembly for movement within the housing assembly, the blade holder assembly includes a blade having a cutting edge, the blade is disposed in the housing assembly so that the cutting edge does not contact any part of the housing assembly, coupling a keratome to the housing assembly so that an interior of the keratome is disposed to receive the blade holder assembly, moving the blade holder assembly in the housing assembly and into the keratome, and removing the keratome from the housing assembly
  • FIG. 1 is a perspective view of a blade insertion apparatus provided in accordance with the principles of the present invention, shown in position to receive a keratome,
  • FIG. 2 is a perspective view of the blade insertion apparatus of FIG. 1 , shown in an unassembled condition
  • FIG. 3 is a plan view of a conventional blade for use in the blade insertion apparatus of FIG. 1 ,
  • FIG. 4 is a plan view of a blade holder assembly of the blade insertion apparatus of FIG. 1 ,
  • FIG. 5 is a side view of the blade holder assembly of the blade insertion apparatus of FIG. 1 ;
  • FIG. 6 is a perspective view of the housing assembly of the blade insertion apparatus of FIG 1 .
  • FIG. 7 is a view of the housing assembly as seen from the direction of arrow A in FIG. 6, and
  • FIG. 8 is a perspective view of an ejector of the blade insertion apparatus of FIG. 1 .
  • an apparatus for inserting a blade into a keratome in accordance with the principles of the present invention is shown generally indicated at 10.
  • the apparatus 10 includes a housing assembly, generally indicated at 12, having an upper housing 14 and a lower housing 16 (FIG. 2).
  • the lower housing 16 has a plurality of pins 18 extending upwardly from an upper surface 19 thereof which mate with apertures 20 defined in the upper housing 14 to join the lower housing 16 to the upper housing 14. It can be appreciated that the pins 18 can be provided on the upper housing 14 with the apertures 20 being defined in the lower housing
  • the lower surface 21 of the upper housing 14 is constructed and arranged to receive a blade holder assembly, generally indicated at 22. It can be appreciated that the upper surface 19 of the lower housing 16 can be constructed and arranged to receive a blade holder assembly 22. As shown in FIG. 4, the blade holder assembly 22 includes a blade holder 24 coupled to a blade 26 for cutting corneal tissue. A suitable blade 26 is an
  • the blade 26 is generally rectangular member having a cutting edge 30 and a central cut-out 32
  • the blade holder 24 includes a protruding portion 34 (FIG 6) which is received in the cut-out 32 thus coupling the blade holder 24 to the blade 26.
  • the upper and lower housings 14 and 16 respectively, have surface features which cooperate to define a keratome receiving recess 36 in an end of the housing assembly 12
  • the keratome receiving recess 36 is constructed and arranged to receive a conventional keratome 37, the function of which will be explained below.
  • the upper and lower housings have surface features which cooperated to define a first channel 38 and a second channel 40.
  • the first channel 38 (FIG. 6) extends from edge 39 of the housing assembly 12 to the keratome receiving recess 36.
  • the first channel 38 is disposed to receive the cutting edge 30 of the blade 26 so that the cutting edge 30 is never contacted by any portion of the housing assembly 12 Thus, the first channel 38 ensures that the integrity of the cutting edge 30 of the blade 26 is not compromised when the blade holder assembly 22 (and thus the blade 26) is moved from the housing assembly 12 and into the keratome 37, as will be explained more fully below.
  • the blade holder 24 includes a portion 42 which extends upwardly from the blade 26 Portion 42 is received in the second channel 40 of the housing assembly 12 so as to be contacted within the second channel 40 as will be explained more fully below.
  • the second channel 40 extends from edge 39 to the keratome receiving recess 36 and defines a guide for guiding the blade holder assembly 22 from the housing assembly 12 into the keratome 37.
  • the upper and lower housings of the housing assembly 12 are preferably molded from plastic material, particularly LEXAN® to promote sliding of the blade holder 24 in the second channel 40.
  • the blade holder 24 is preferably molded from plastic material, particularly "PEEK" to promote sliding of the blade holder 24 in the second channel 40.
  • the apparatus 10 includes an ejector 44 having an elongated portion 45 sized to be inserted into the second channel 40.
  • the tip of the elongated portion 45 has a blade holder engaging surface 46.
  • Surface 46 is constructed and arranged to move the blade holder assembly 22 into the keratome 37 when the keratome 37 is disposed in the keratome receiving recess 36.
  • the ejector 44 also has a keratome engaging surface 48 disposed inwardly from the tip of the ejector 44.
  • the keratome engaging surface 48 is constructed and arranged to move the keratome 37, with the blade holder assembly 22 therein, from the housing assembly 12.
  • a handle 47 is coupled to the elongated portion for manually manipulating the ejector 44.
  • the blade holder assembly 22 is placed on the lower surface 21 of the upper housing 14.
  • the upper housing 14 is then coupled to the lower housing via the pin- aperture connections as described above.
  • the portion 42 of the blade holder 24 is disposed in the second channel 40 and the cutting edge 30 of the blade 26 is disposed in the first channel 38 and is thus protected.
  • the housing assembly 12 with the blade holder assembly 22 therein, and the ejector 44 are sterilized and packaged.
  • the package is opened in a sterile environment.
  • the keratome 37 is inserted into the keratome receiving recess 36 and is located therein via location pads 50 of the lower housing 16.
  • the keratome 37 may be, e.g., the UltraShaperTM cutting head A991 1 1 commercially available from LaserSight Technologies, Inc
  • the keratome 37 has an opening 51 to receive the blade holder assembly 22 therein
  • the ejector 44 is inserted into the second channel 40 at edge 39 of and into the assembled housing 12 until the blade holder engaging surface 46 contacts portion 42 of the blade holder assembly 22
  • the ejector 44 is pushed farther into the second channel 40 which pushes the blade holder assembly 22 into the opening 51 in the keratome 37
  • the length engaging surface 46 is such that the blade holder assembly 22 is centered in the keratome 37
  • Still further insertion of the ejector 44 into the second channel 40 causes the keratome engaging surface 48 of the ejector 44 to engage
  • the apparatus of the invention inserts a blade into a keratome using an apparatus in a manner which protects the integrity of the blade edge, eliminates the possibility of contamination of the sterile blade, properly loads the blade into its correct position within the keratome, and ejects the keratome from the apparatus when the blade is properly loaded in the keratome

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un appareil (10) et un procédé permettant d'insérer une lame (26) dans un kératome. Ledit appareil comprend un porte-lame (24) et une lame (26) présentant un tranchant (30); ladite lame (26) est couplée avec le porte-lame (24) formant ainsi un ensemble porte-lame (22). L'invention concerne également un ensemble boîtier (12). L'ensemble porte-lame (22) est monté dans l'ensemble boîtier (12) de façon à pouvoir se déplacer par rapport audit ensemble boîtier (12). Ledit ensemble boîtier (12) est conçu et disposé de façon à protéger le tranchant (30) de la lame (24) et à récolter un kératome. Un système d'éjection (44) est conçu et disposé de façon à déplacer l'ensemble porte-lame dans l'ensemble boîtier(12) et dans un kératome (37), lorsque ledit kératome (37) est récolté par l'ensemble boîtier (12). Le système d'éjection (44) retire alors le kératome (37) de l'ensemble boîtier (12).
PCT/US2000/007705 1999-03-26 2000-03-23 Appareil permettant l'insertion d'une lame dans des keratomes WO2000057799A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU37701/00A AU3770100A (en) 1999-03-26 2000-03-23 Blade insertion apparatus for keratomes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US12633299P 1999-03-26 1999-03-26
US60/126,332 1999-03-26
US12669399P 1999-03-29 1999-03-29
US60/126,693 1999-03-29

Publications (2)

Publication Number Publication Date
WO2000057799A1 true WO2000057799A1 (fr) 2000-10-05
WO2000057799A9 WO2000057799A9 (fr) 2002-06-20

Family

ID=26824533

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/007705 WO2000057799A1 (fr) 1999-03-26 2000-03-23 Appareil permettant l'insertion d'une lame dans des keratomes

Country Status (2)

Country Link
AU (1) AU3770100A (fr)
WO (1) WO2000057799A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1752120A1 (fr) * 2005-08-12 2007-02-14 Wavelight Laser Technologie AG Appareil pour insérer une lame d'incision avec son support dans un instrument microchirugical, comprennant une lame d'incision avec son support
US7785485B2 (en) 2003-09-17 2010-08-31 Becton, Dickinson And Company System and method for creating linear and non-linear trenches in silicon and other crystalline materials with a router
US7875045B2 (en) * 2006-02-02 2011-01-25 Nidek Co., Ltd. Corneal incision apparatus and blade case for storing blade unit to be mounted in the corneal incision apparatus
US7906437B2 (en) 2002-03-11 2011-03-15 Beaver-Visitec International (Us), Inc. System and method for the manufacture of surgical blades

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35421E (en) * 1990-02-14 1997-01-07 Ruiz; Luis A. Automatic corneal shaper
US5976163A (en) * 1995-12-04 1999-11-02 Bausch & Lomb Surgical, Inc. Apparatus for resecting corneal tissue

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35421E (en) * 1990-02-14 1997-01-07 Ruiz; Luis A. Automatic corneal shaper
US5976163A (en) * 1995-12-04 1999-11-02 Bausch & Lomb Surgical, Inc. Apparatus for resecting corneal tissue

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7906437B2 (en) 2002-03-11 2011-03-15 Beaver-Visitec International (Us), Inc. System and method for the manufacture of surgical blades
US8409462B2 (en) 2002-03-11 2013-04-02 Beaver-Visitec International (Us), Inc. System and method for the manufacture of surgical blades
US7785485B2 (en) 2003-09-17 2010-08-31 Becton, Dickinson And Company System and method for creating linear and non-linear trenches in silicon and other crystalline materials with a router
EP1752120A1 (fr) * 2005-08-12 2007-02-14 Wavelight Laser Technologie AG Appareil pour insérer une lame d'incision avec son support dans un instrument microchirugical, comprennant une lame d'incision avec son support
WO2007019966A1 (fr) * 2005-08-12 2007-02-22 Wavelight Ag Dispositif pour equiper un support de lame de coupe d'un instrument de coupe microchirurgical avec une unite de lame de coupe
US7875045B2 (en) * 2006-02-02 2011-01-25 Nidek Co., Ltd. Corneal incision apparatus and blade case for storing blade unit to be mounted in the corneal incision apparatus

Also Published As

Publication number Publication date
AU3770100A (en) 2000-10-16
WO2000057799A9 (fr) 2002-06-20

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