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EP2323598A1 - Dispositif d'examen d'un système ophtalmologique de microkératome - Google Patents

Dispositif d'examen d'un système ophtalmologique de microkératome

Info

Publication number
EP2323598A1
EP2323598A1 EP08801993A EP08801993A EP2323598A1 EP 2323598 A1 EP2323598 A1 EP 2323598A1 EP 08801993 A EP08801993 A EP 08801993A EP 08801993 A EP08801993 A EP 08801993A EP 2323598 A1 EP2323598 A1 EP 2323598A1
Authority
EP
European Patent Office
Prior art keywords
unit
cutting
microkeratome
cutting blade
image
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.)
Withdrawn
Application number
EP08801993A
Other languages
German (de)
English (en)
Inventor
Christof Donitzky
Tobias Jeglorz
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.)
Wavelight GmbH
Original Assignee
Wavelight GmbH
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 Wavelight GmbH filed Critical Wavelight GmbH
Publication of EP2323598A1 publication Critical patent/EP2323598A1/fr
Withdrawn legal-status Critical Current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
    • A61F9/013—Instruments for compensation of ocular refraction ; Instruments for use in cornea removal, for reshaping or performing incisions in the cornea
    • A61F9/0133—Knives or scalpels specially adapted therefor

Definitions

  • the invention relates to a device for examining an ophthalmic microkeratome system.
  • the test should allow testing of the microkeratome system for proper selection and proper condition of the components of the microkeratome system as well as calibration of the microkeratome system.
  • a microkeratome is a microsurgical planer (scalpel), which is usually controlled electronically.
  • scalpel microsurgical planer
  • Ophthalmology i. Ophthalmology
  • microkeratomas are used in particular in so-called LASIK treatments, which seek to improve or even eliminate refractive errors of the eye by reshaping the cornea.
  • LASIK laser in situ keratomileusis
  • a surface cut is made in the cornea by means of the microkeratome in order to produce a cover disc referred to in the art as "flap", which is still connected to the corneal tissue on part of its circumference, so that After the flaps have been folded away, the LASIK ablates the exposed corneal tissue using laser radiation in accordance with a previously determined patient-specific ablation profile
  • the laser radiation of an excimer laser radiating in the low UV wavelength range eg at 193 nm
  • Epi-LASIK As subspecies of the LASIK technique explained above, there is the so-called Epi-LASIK.
  • a flap is produced, but it does not cut into the stromal tissue of the cornea, instead it creates a pure epithelial flap, to which the cornea can first be trepanned (trepinination: setting a circular incision) and then a comparatively blunt flat blade is inserted into the ring cut to lift the epithelial flap along the bowman membrane.
  • Previous trepanning is not essential in Epi-LASIK, but allows the use of a blunt blade for flap cutting.
  • the device according to the invention is intended to permit the examination of microcertomone systems for the "classical" LASIK as well as for the Epi-LASIK.
  • Common microkeratomas for ophthalmic surgery usually have one or more replacement components, which are chosen, for example, depending on the type of pending surgery and the dimensions of the eye to be operated on. Such replacement components can then be available in different shapes and / or sizes and selected individually. But also for reasons of cleanliness of ophthalmic microkeratoms usually interchangeability of individual components is provided, for example, to be able to sterilize used components for reuse or to replace them in the case of disposability against fresh, still unused components.
  • Exemplary replacement components of common microkeratomas for ophthalmic surgery are suction rings, cutting heads, tubes, blades, etc.
  • DE 10 2005 025 406 A1 and DE 10 2005 025 407 A1 are concerned with the data acquisition of the exchange components used in an ophthalmic microkeratome by reading in a component identifier by means of a reading device.
  • the read-in identifiers contain information about the properties (parameters) of the component in question and can be compared with stored identification data, for example to check whether the component concerned is approved by the original manufacturer or only represents an inferior duplicate. Also, by detecting the identifiers, the number of uses of a particular component can be counted, and upon reaching a predetermined maximum number of operations, the operator will be signaled that this component is now to be replaced.
  • the object of the invention is to carry out more extensive investigations on an ophthalmic microkeratome system than just the mere read-out of an identifier of components. to further simplify and safer use of the microkeratome system.
  • the invention provides a device for examination
  • the image capture unit is arranged so that it can be placed on the microkeratome from the side with which the microkeratome system is placed on the eye during the later operation.
  • the image acquisition unit can detect not only the suction ring unit but also the cutting blade and its movement during the test run
  • the image acquisition unit can detect not only the suction ring unit but also the cutting blade and its movement during the test run
  • the image acquisition unit can detect not only the suction ring unit but also the cutting blade and its movement during the test run
  • the image sensing unit 25 is set while the image sensing unit is disposed below the support plate and directed upward. It is understood that other embodiments of the mounting unit are possible at any time. For example, it may be sufficient to hold the microkeratome system without any underlying support plate by means of suitable clamping means, so to speak, "at free height” and to arrange the image acquisition unit o underneath.
  • the microkeratome system can have at least one exchange component provided with a machine-readable identifier whose identifier describes at least one geometric parameter of the microkeratome system.
  • the evaluation unit can determine a measured value for the geometric parameter on the basis of the image data and compare it with the value of the parameter given by the identifier. In this way, it can be determined whether the parameter values contained in an identifier of a component of the microkeratome system actually coincide with the real parameter values. Because it can not be ruled out that the manufacturer of the component mistakenly applied a wrong identifier.
  • the microkeratome system can in particular have a suction ring unit which can be placed on the eye of a patient and can be fixed there by vacuum.
  • the evaluation unit can then be set up to determine at least one diameter measurement value for the suction ring unit on the basis of the image data and to compare this with a diameter value given by the identifier of the suction ring unit. Since the eyes of different people can be of different sizes, the treating physician usually Saugringiseren be kept in different sizes to select depending on the patient a Saugringech of a suitable size.
  • size characterization of the suction ring unit it is particularly suitable to specify an inner and / or outer diameter of the suction ring. Both diameters are preferably measured within the frame of the image evaluation and compared with corresponding diameter values of the identification of the suction ring unit.
  • the identifiers attached to the microkeratome system may also include parameters such as the diameter and / or thickness of the flap and indications of the hinge, ie the hinge area of the flap where the flap is still with the epithelium is related.
  • the latter information may relate, for example, the size of the hinge area and / or its angular position.
  • the actual values of these parameters can be at least partly taken directly from the acquired images of the microkeratome system. However, it may also be that the evaluation unit can only calculate the actual parameter values indirectly from the image data with additional consideration of further conditions of the microkeratome system.
  • the image acquisition unit can be arranged or arranged for a pictorial detection of at least parts of a cutting blade of the microkeratome system, in particular a cutting edge of the cutting blade.
  • the evaluation unit can then be set up to output a captured image of the cutting blade on a display device and / or to evaluate the image data for the determination of at least one property of the cutting blade.
  • the quality of the cutting blade, the quality of its location in the microkeratome system and the quality of its movement have a decisive influence on the quality of the treatment result.
  • the display of an image of the cutting blade can enable it to visually check the quality of the blade cutting edge, ie whether the cutting edge is sufficiently smooth or possibly has too much roughness (due, for example, to damage or breakouts). For this purpose, under certain circumstances, a correspondingly enlarged representation of the blade cutting edge may be required. A blade with too rough an edge carries risks for later cutting. For example, it can lead to dirty cutting edges. From the representation of an image of the cutting blade on the display device, the attending physician can optionally also check the correct position of the cutting blade. It is important that the cutting blade takes exactly a desired orientation to a reference direction or reference line. Deviations from this desired position of the cutting blade can also have a negative influence on the cutting process and the cutting result.
  • the evaluation unit can be set up to determine a measure of the roughness or the sharpness of the cutting edge on the basis of the image data and, if appropriate, to compare this with a predetermined reference dimension.
  • roughness or sharpness measure for example, an average roughness, a maximum roughness or another measure can be used.
  • the test run can run programmatically and provide a stop in its course at a position at least by the image acquisition unit Approximately the largest possible part of the cutting edge is detected.
  • the evaluation unit can then output an image of the cutting blade detected during this stop on the display device and / or evaluate it with regard to the roughness of the cutting edge.
  • the stop can be made at a position when the cutting edge is substantially at the center of the suction ring and, accordingly, the largest possible amount of the cutting edge is visible through the suction ring from below.
  • the evaluation unit may be configured to determine a measure of the orientation and / or orientation variations of the cutting edge relative to a reference orientation on the basis of the image data and, if appropriate, to compare this with a predetermined reference dimension.
  • the rest orientation of the cutting edge i.e., when the cutting edge is stationary
  • a mean or maximum amplitude of the pendulum movement can be used as a measure of the orientation fluctuations of the cutting edge.
  • the relationship between the position of a drive motor and a cutting unit of the microkeratome system driven by it will initially be unknown before the operation and therefore first have to be determined by calibration.
  • the knowledge of this relationship is necessary in order to drive the cutting unit program-controlled exactly to a desired end position during the operation and to stop it there. So far, this calibration is performed, for example, by allowing the cutting unit to drive against a defined mechanical stop surface, which represents a zero point.
  • the abutment of the cutting unit on the stop surface is noticeable via a noticeable increase in the current absorbed by the drive motor.
  • the starting position and the end position of the cutting unit can then be calculated from the zero point determined in this way and entered into the computer controlling the microkeratome system.
  • the microkeratome system has a cutting unit equipped with a cutting blade and a controllable motor unit. see drive unit for the cutting unit, that the image acquisition unit for a pictorial detection of at least parts of the cutting blade, in particular a cutting edge of the cutting blade, arranged or can be arranged, and that the evaluation unit is adapted to monitor the position of the cutting blade and the evaluation of the image data depending on the monitored cutting blade position and at least one predetermined blade reference position to determine a desired control profile for the drive unit.
  • the evaluation unit continuously tracks its position starting from an initial position. It continuously performs a comparison with a predetermined blade reference position, for example, a predetermined end position of the cutting blade.
  • a predetermined blade reference position for example, a predetermined end position of the cutting blade.
  • Such an end position is required, for example, for the flap generation; it is defined by the desired width of the non-severed hinge area (hinge) of the flap. Based on such a desired / actual position comparison is a position referencing of
  • any evaluation or processing result of the evaluation unit for example comparison results, can be output on a display device. Based on the results displayed, the attending physician can then decide whether surgery with the microkeratome system can be performed in its current composition or whether individual components need to be replaced.
  • the evaluation unit effects an operation blocking or release for the microkeratome system as a function of the evaluation or processing results. For example, if the evaluation unit determines that a measured roughness of the cutting blade exceeds a predetermined limit, it may cause an automatic lock that prevents the microkeratome system from starting up. The same applies, for example, if the evaluation unit determines that the blade is skewed in the cutting unit or oscillates too much when the cutting unit is driven.
  • FIG 3 shows a further embodiment of a device for examining a microkeratome system.
  • the microkeratome system to be examined shown in FIGS. 1 and 2 is designated generally by 10. It consists essentially of three components, each of which form a structural unit and can be assembled into a so-called handpiece. These components are a suction ring unit 12 to be placed on the patient's eye (not shown), a cutting unit 14 which can be placed on the suction ring unit and a motor drive unit 16 for driving the cutting unit 14.
  • the suction ring unit 12 has the actual suction ring which in Fig. 2 is denoted by 18, and a connecting piece 20, which is connectable in a conventional manner via a hose connection with a vacuum pump, not shown. The negative pressure generated by this vacuum pump is used to suck the suction ring 18 to the eye.
  • the suction ring unit 12 also has formations for supporting and movably guiding the cutting unit 14. These formations are formed in the example shown by a guide support frame 22 having two spaced parallel to each other guide support strips 24, on the upper side in each case a tooth trace 26 is formed.
  • the cutting unit 14 is composed in a manner also known per se from a cutting head 28 and a cutting blade 30 inserted into the cutting head 28 and laterally movably received therein.
  • the cutting blade is not visible in FIG. 1; There, only the cutting head 28 can be seen.
  • This carries a few drive pinion 32 which mesh with proper assembly of the handpiece with one of the tooth tracks 26 and over which the cutting unit 14 is supported on the suction ring 12.
  • the pinions 32 (only one of which is shown in FIG. 1) are in mechanical drive connection with a drive shaft of the drive unit 16 (not illustrated in more detail), so that by actuating the drive unit in the drive unit. unit 16 contained drive motor, the cutting head 28 in the direction of the tooth tracks 26 can be moved back and forth.
  • the mobility of the cutting blade 30 in the cutting head 28 is perpendicular to this direction of travel of the cutting head 28; this is meant by lateral.
  • the cutting blade 30 is simultaneously set in lateral oscillation.
  • the longitudinal movement of the cutting head 28 is shown in FIG. 2 by a double arrow 34, while the lateral oscillation of the cutting blade 30 relative to the cutting head is represented by a double arrow 36.
  • the cutting blade 30 has a cutting edge 38 with a cutting edge 40.
  • the cutting edge 40 is a straight edge which is perpendicular to the direction of movement 34 of the cutting head 28.
  • the cutting head 28 protrudes between the two guide support strips 24 of the suction ring unit 12, wherein the cutting edge 38 of the cutting blade 30 downwards from the cutting head 28 by a desired dependent on the desired thickness of the flaps to be produced from the cutting head 28 (more precisely an aplanation surface for the cornea provided on the cutting head 28 protrudes.
  • Microkeratome systems of the type shown in the figures are offered on the market, for example, by WaveLight AG under the trade name RONDO.
  • the invention can also be used to study other types of microkeratome systems.
  • the motion profile of the cutting head of the microkeratome in addition to linearly advanced cutting heads, as occur for example in the system RONDO the company WaveLight AG, known in the art Mikrokeratomsysteme with differently moving cutting heads, for example systems with a pendulum advanced cutting head or a radially moving cutting head.
  • the examination device 42 comprises a mounting unit 44, which allows the handpiece 10 in the assembled, mechanically functional and operative state in an upright orientation, that is, with the Saugringiser 12 below and the drive unit 16 above, to fix.
  • the mounting unit 44 in the illustrated embodiment, a support plate 46, wel che forms a bearing surface for the suction ring unit 12.
  • the support plate 46 are associated with suitable clamping members 48, which allow the suction ring unit 12 to be clamped to the support plate 46.
  • the support plate 46 is made of glass or transparent plastic, for example.
  • a digital image capture unit 50 with an image sensor 52 e.g., CMOS, CCD
  • the camera 50 may be attached directly to the support plate 46 or be placed separately from the support plate 46. In this case, it can be arranged fixed in position or positionable. In any case, it is aligned or can be oriented so that it looks from below on the suction ring unit 12 in order to capture an image of the suction ring 18 and the cutting edge 38 can. It is expedient here if the field of view of the camera 50 extends over the entire suction ring 18, so that a measurement of not only the inner diameter of the suction ring 18 (designated as Di in FIG. 2) by means of suitable image processing software based on the images supplied by it. but also a measurement of the outer diameter (denoted by Da) is possible.
  • the image data of the camera 50 are supplied to an electronic evaluation and control unit 54, which processes and evaluates the image data under software control.
  • the evaluation and control unit 54 can display at least part of the results obtained in the context of the image processing on a display unit 56.
  • the evaluation and control unit 54 depending on the processing results, can perform a control in such a way that it prevents or releases the commissioning of the microkeratome 10.
  • the evaluation and control unit 54 is connected to the drive unit 16 and can control it for carrying out a test operation run of the microkeratome 10. As part of this test run, the unit of cutting unit 14 and drive unit 16 is moved back and forth relative to the suction ring unit 12 one or more times to determine a desired control profile for the drive unit 16 according to which the microkeratome 10 is controlled during the intended operation should. For this purpose, the evaluation and control unit 54 must know the relationship between the position of the cutting head 28 relative to the suction ring unit 12 in the direction of arrow 34 and the rotational position of the drive motor of the drive unit 16, ie a position referencing must be performed. For this purpose, the evaluation and control unit 54 leaves the cutting head 28 in the course of the test operation.
  • the doctor can individually specify a desired end position for the cutting edge 38, up to which it should drive during the operation and then stay there 5.
  • the evaluation and control unit 54 continuously compares the currently detected position of the cutting edge 38 during the calibration run.
  • the evaluation and control unit remembers the corresponding engine rotational position and sets it in relation to the nominal end position. In this way, the evaluation and control unit lo refer to the motor rotation position with respect to the longitudinal position of the cutting edge 38.
  • the cutting blade 30 oscillates laterally when the cutting head 28 is moved in the direction 34. This oscillation can lead to undesirable oscillating movements of the cutting blade 30, which may be caused by, for example, a not perfectly straight guidance of the cutting blade 30 in the cutting head 28.
  • the evaluation and control unit 54 can detect any oscillating movements of the cutting edge 38 and in particular determine a measure of the strength of such oscillating movements.
  • a memory not shown, a
  • the evaluation and control unit 54 compares the measured magnitude of the pendulum movements with this reference value and displays the result on the display unit 56. Of course, regardless of such a comparison, it may measure the measured value for the blade swing on the display unit 56
  • an intermediate stop is preferably provided on which the cutting head 28 and with it the cutting blade 30 5 temporarily stop.
  • this intermediate stop takes place when the cutting edge 40 is located substantially in the center of the suction ring 18, that is approximately in the position shown in FIG. 2. Then, a maximum piece of Cutting edge 38 and the cutting edge 40 for the camera 50 can be detected, and the evaluation and control unit 54 can best assess the rest orientation of the cutting edge 40.
  • the image taken by the cutting edge 38 during the intermediate stop can also evaluate the evaluation and control unit for a roughness analysis of the cutting edge 40. As part of this analysis, it determines a measure of the roughness of the cutting edge 40 and displays this on the display unit 56. Optionally, it can also compare the determined roughness measure with a predetermined reference dimension and display the comparison result on the display unit 56. If the examination device 42 permits a sufficient enlargement of a recorded image, it is conceivable that the evaluation and control unit displays an enlarged image of the cutting edge 38 on the display unit 56, so that the surgeon himself can judge the roughness of the cutting edge 40.
  • the control and evaluation unit 54 is further coupled to a reading device 58, which makes it possible to read in externally applied identifiers (for example a matrix-shaped code) on the components of the microkeratome 10.
  • identifiers for example a matrix-shaped code
  • such identifiers are indicated at 60, 62, 64, wherein the identifier 60 is associated with the drive unit 16, the identifier 62 of the cutting unit 14 and the identifier 64 of the suction ring unit 12.
  • the identifiers 60, 62, 64 contained in encrypted Form Information about the component concerned. From these data, the control and evaluation unit 54 can determine, for example, the frequency of uses of each individual component.
  • the identifiers 60, 62, 64 may also contain information about geometric dimensions of the component in question. For example, in the case of the suction ring unit 12, the identifier 64 may include information about the inner diameter Di and the outer diameter Da of the suction ring 18.
  • control and evaluation unit 54 can determine from the image data of the camera 50 which values of the inner and outer diameters of the suction ring 18 actually have. These measured values can then be compared with the information in identifier 64. In the event of a discrepancy, it may issue a suitable warning on the display unit 56.
  • FIG. 3 reference is made to the same reference numerals as before, as far as identical or equivalent components are concerned In order to distinguish the embodiment of FIG. 3 from that of FIGS. 1 and 2, however, a lowercase letter is attached to the reference numerals used in FIG. Reference is also made to the preceding explanations, unless otherwise stated below.
  • the examination device 42a according to the exemplary embodiment illustrated in FIG. 3 comprises a base housing 66a, preferably designed as a closed box, in which at least a majority of the components of the examination device are accommodated.
  • a holding block 68a mounted on the housing 66a is a holding block 68a, which serves as a holder for the microkeratome 10a to be examined.
  • the microkeratome 10a is of the same configuration as the microkeratome 10 of FIGS. 1 and 2.
  • the holding block 68a at least provides a positional fixation of the microkeratome 10a in the horizontal direction, assuming that the examination device 42a corresponds to the one shown in FIG. 3 orientation is placed at a workplace.
  • the holding block 68a may be formed with clamping means which allow entrapment of the microkeratome 10a or at least a portion of the components of the microkeratome 10a.
  • a transparent support plate 70a is integrated, which provides a horizontally oriented footprint for the Mikrokeratom 10a.
  • the support plate 70a is as far as the support plate 46 of FIG. 1 comparable.
  • the support plate 70a may be, for example, a glass plate inserted into a window opening formed by the housing 66a.
  • the components of the examination device 42a accommodated in the housing 66a include a camera 50a which, as in the embodiment of FIGS. 1 and 2, receives an image of the microkeratome 10a from below.
  • the camera 50a is not directed directly to the underside of the suction ring 12a. Instead, it is arranged at an angle (in this case a right angle) and indirectly detects an image of the microkeratome 10a via a deflection mirror 72a.
  • a first lighting arrangement 74a is installed in the housing 66a, which serves to illuminate the microkeratome 10a to be examined from below. More generally, the first lighting arrangement 74a for illuminating the parts of the microkeratome 10a to be detected by the camera 50a.
  • the first illumination arrangement 74a is formed by a plurality of annularly distributed light-emitting diodes 76a, which are held on a common carrier ring disc 78a.
  • an electronic control and evaluation circuit 54a - here in the form of a single circuit board - and at least one, here two reading units 58a housed for image-technical detection of the microkeratome 10a externally mounted component identifiers.
  • the reading units 58a are each designed as a separate structural unit and each comprise an image sensor 79a and a second illumination arrangement 80a, which serves to illuminate the area to be detected by the relevant image sensor 79a.
  • the second illumination arrangements 80a are each formed by a plurality of luminous elements, which again may, for example, be light emitting diodes. It should be understood that the wall portions of the housing 66a located in front of the reading units 58a (more specifically, between the reading units 58a and the microkeratome 10a) are made transparent.
  • power supply means for the electrical power supply of the camera 50a, the reading units 58a, the evaluation and control circuit 54a and the first illumination arrangement 74a are also accommodated in the housing 66a.
  • these power supply means may comprise at least one electrical power supply unit which regulates an external supply voltage to a current and / or voltage level required by the components of the examination device 42a.

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)
  • Image Analysis (AREA)

Abstract

L'invention concerne un dispositif (42) d'examen d'un système ophtalmologique de microkératome (10), comportant une unité support (44) destinée au maintien du système de microkératome dans un état apte au fonctionnement, une unité d'imagerie (52) conçue pour saisir des images de parties pertinentes en termes de fonction dudit système de microkératome pendant un fonctionnement test de ce système, et une unité d'analyse (54) électronique pour l'analyse et/ou le traitement des données images de l'unité d'imagerie. L'unité d'analyse peut de préférence, au moyen des données images de l'unité d'imagerie (50), saisir la rugosité d'une lame de coupe du système de microkératome, la position correcte de la lame de coupe et tout mouvement pendulaire de ladite lame pendant le fonctionnement. En outre, sur la base des données images, elle peut mesurer les diamètres interne et externe d'un anneau de succion de l'unité anneau de succion (12) et les comparer à des valeurs correspondantes comprises dans une caractéristique (64) lisible par machine et située sur la face externe de l'unité anneau de succion (12).
EP08801993A 2008-09-10 2008-09-10 Dispositif d'examen d'un système ophtalmologique de microkératome Withdrawn EP2323598A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/007430 WO2010028666A1 (fr) 2008-09-10 2008-09-10 Dispositif d'examen d'un système ophtalmologique de microkératome

Publications (1)

Publication Number Publication Date
EP2323598A1 true EP2323598A1 (fr) 2011-05-25

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EP08801993A Withdrawn EP2323598A1 (fr) 2008-09-10 2008-09-10 Dispositif d'examen d'un système ophtalmologique de microkératome

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EP (1) EP2323598A1 (fr)
WO (1) WO2010028666A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012041345A1 (fr) * 2010-09-30 2012-04-05 Wavelight Gmbh Système de microkératome utilisé pour découper un capot dans l'oeil humain

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Publication number Priority date Publication date Assignee Title
JP2003111772A (ja) * 2001-10-03 2003-04-15 Sakase Chemical Industry Co Ltd 手術器具の管理システム
EP1663586B1 (fr) * 2003-09-17 2008-09-10 Coplan Limited Systeme de controle d'inventaire
DE102005025406A1 (de) * 2005-06-02 2006-12-07 Wavelight Laser Technologie Ag Mikrokeratomsystem
DE102005025407A1 (de) * 2005-06-02 2006-12-07 Wavelight Laser Technologie Ag Mikrokeratomsystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010028666A1 *

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