Canadian Patents Database / Patent 2756584 Summary

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(12) Patent Application: (11) CA 2756584
(54) English Title: DEVICE FOR LASIK
(54) French Title: DISPOSITIF POUR LASIK
(51) International Patent Classification (IPC):
  • A61F 9/01 (2006.01)
(72) Inventors (Country):
  • WUELLNER, CHRISTIAN (Germany)
  • VOGLER, KLAUS (Germany)
  • DONITZKY, CHRISTOF (Germany)
(73) Owners (Country):
  • WAVELIGHT GMBH (Germany)
(71) Applicants (Country):
  • WAVELIGHT GMBH (Germany)
(74) Agent: KIRBY EADES GALE BAKER
(45) Issued:
(86) PCT Filing Date: 2009-03-23
(87) PCT Publication Date: 2010-09-30
Examination requested: 2012-03-15
(30) Availability of licence: N/A
(30) Language of filing: English

English Abstract




An apparatus for LASIK is equipped with the following:
- a first laser radiation source for generating first laser radiation pulses
having a power density for bringing about disruption in corneal tissue;
- first means for guiding and shaping the first laser radiation pulses into
the
corneal tissue;
- a second laser radiation source for generating second laser radiation
pulses having a power density for bringing about ablation of corneal tissue;
- second means for guiding and shaping the second laser radiation pulses
in relation to the cornea;
- a controller with a first treatment program for controlling the first means
and the first laser radiation pulses for the purpose of producing an incision
(72)
in the cornea (60); and with
- a second treatment program for controlling the second means and the
second laser radiation pulses for the purpose of reshaping the cornea and
changing its imaging properties, wherein
- the first treatment program generates regular corneal surface structures
(68) which cause a rainbow-glare effect in connection with the imaging
properties of the cornea;
and
- a third treatment program which controls the second means and the
second laser radiation pulses for the purpose of removing the aforementioned
regular structures (68).


French Abstract

L'invention concerne un dispositif pour LASIK doté de ce qui suit : une première source (12) de rayonnement laser qui génère de premières impulsions (14) de rayonnement laser dont la densité de puissance permet d'obtenir une rupture du tissu de la cornée, des premiers moyens (24, 44, K) qui guident et forment la première impulsion de rayonnement laser dans le tissu de la cornée, une deuxième source (46) de rayonnement laser qui forme des deuxièmes impulsions (48) de rayonnement laser dont la densité de puissance permet d'obtenir l'ablation du tissu de la cornée, des deuxièmes moyens (40, 42, 44, 24) qui guident et forment les deuxièmes impulsions de rayonnement laser par rapport à la cornée, une commande (50) dotée d'un premier programme de traitement (56a) qui commande les premiers moyens et les premières impulsions de rayonnement laser de manière à former une découpe (72) dans la cornée (60) et un deuxième programme de traitement (56b) qui commande les deuxièmes moyens et les deuxièmes impulsions de rayonnement laser en vue de reformer et modifier les propriétés de formation d'image de la cornée, le premier programme de traitement formant des structures de surface cornéennes régulières (68) qui entraînent un effet d'arc-en-ciel dans les propriétés de formation d'image de la cornée et un troisième programme de traitement (56c) qui commande les deuxièmes moyens et les deuxièmes impulsions de rayonnement laser en vue d'éliminer lesdites structures régulières (68).


Note: Claims are shown in the official language in which they were submitted.



-14-

Claims


1. Apparatus for laser in-situ keratomileusis (LASIK), with:
- a first laser radiation source (12) for generating first laser radiation
pulses
(14) having a power density for bringing about disruptions in corneal tissue,
- first means (24, 44, K) for guiding and shaping the first laser radiation
pulses (14) into the corneal tissue,
- a second laser radiation source (46) for generating second laser radiation
pulses (48) having a power density for bringing about ablation of corneal
tissue,
- second means (40, 42, 44, 24) for guiding and shaping the second laser
radiation pulses (48) in relation to the cornea,
- a controller (50) with a first treatment program (56a) for controlling the
first means and the first laser radiation pulses (14) for generating an
incision in
the cornea (60), and with
- a second treatment program (56b) for controlling the second means and
the second laser radiation pulses (48) for reshaping the cornea and changing
its
imaging properties, wherein
- the first treatment program (56a) produces regular corneal surface
structures (68) which cause a rainbow-glare effect in connection with the
imaging properties of the cornea,
characterized by
- a third treatment program (56c) which controls the second means (40 42,
44, 24) and the second laser radiation pulses (48) for removing the
aforementioned regular structures (68).

2. Apparatus according to Claim 1 for LASIK treatment of myopia,
characterized in that the third treatment program (56c) brings about, in
addition
to a refractive ablation volume (78'), a smoothing ablation particularly in
the
marginal region (80) of the cornea (60).



-15-

3. Apparatus according to Claim 1 for LASIK treatment of hyperopia,
characterized in that the third treatment program (56c) brings about, in
addition
to a refractive ablation volume (78'), a smoothing ablation particularly in
the
middle region (82) of the cornea (60).


A single figure which represents the drawing illustrating the invention.

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Admin Status

Title Date
(86) PCT Filing Date 2009-03-23
(87) PCT Publication Date 2010-09-30
(85) National Entry 2011-09-23
Examination Requested 2012-03-15

Maintenance Fee

Description Date Amount
Last Payment 2015-02-25 $200.00
Next Payment if small entity fee 2016-03-23 $100.00
Next Payment if standard fee 2016-03-23 $200.00

Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following

  • the reinstatement fee set out in Item 7 of Schedule II of the Patent Rules;
  • the late payment fee set out in Item 22.1 of Schedule II of the Patent Rules; or
  • the additional fee for late payment set out in Items 31 and 32 of Schedule II of the Patent Rules.

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Registration of Documents $100.00 2011-09-23
Filing $400.00 2011-09-23
Maintenance Fee - Application - New Act 2 2011-03-23 $100.00 2011-09-23
Request for Examination $800.00 2012-03-15
Maintenance Fee - Application - New Act 3 2012-03-23 $100.00 2012-03-15
Maintenance Fee - Application - New Act 4 2013-03-25 $100.00 2013-03-05
Maintenance Fee - Application - New Act 5 2014-03-24 $200.00 2014-03-07
Maintenance Fee - Application - New Act 6 2015-03-23 $200.00 2015-02-25

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Abstract 2011-09-23 1 30
Claims 2015-04-13 4 132
Claims 2014-04-07 4 163
Claims 2011-09-24 3 97
Claims 2011-09-23 2 45
Cover Page 2011-11-23 1 50
Description 2014-04-07 13 574
Description 2011-09-23 13 569
Drawings 2011-09-23 2 41
Prosecution-Amendment 2015-04-13 8 289
Prosecution-Amendment 2014-12-12 4 259
Prosecution-Amendment 2014-04-07 12 487
Prosecution-Amendment 2013-10-07 2 87
Prosecution-Amendment 2012-03-15 1 38
Prosecution-Amendment 2011-09-23 5 145
Representative Drawing 2011-11-15 1 8
Representative Drawing 2011-09-23 1 8