OPHTHALMOLOGICAL IMPLANT AND METHOD FOR PRODUCING SAME

Abstract

An ophthalmological implant including an imaging optical element, and a haptic with a haptic root. Also, a corresponding method for producing an ophthalmological implant and a characterization system for identifying an ophthalmological implant for example an intraocular lens. The implant includes an unambiguous label and hence an unambiguous and reliable identification option. The label is not able to be mixed-up and is possible with minimal additional technical outlay. The implant includes a rotationally symmetric structural code of identification data of the ophthalmological implant arranged on the haptic root and/or the region of the haptic proximate the haptic root. Also, a method for producing an ophthalmological implant, in which the implant receives, directly during or after the forming, a rotationally symmetric structural code of identification data.

Claims

1.-18. (canceled)

19. An ophthalmological implant, comprising: an imaging optical element; a haptic with a haptic root which adjoins the imaging optical element; wherein the haptic root at least partly encloses the imaging optical element at a circumferential edge of the imaging optical element; and a rotationally symmetric structural code of identification data of the ophthalmological implant arranged on the haptic root and/or on a region of the haptic proximate the haptic root.

20. The ophthalmological implant as claimed in claim 19, wherein the imaging optical element comprises a central optical lens and the identification data comprises a type and a refractive power of the ophthalmological implant.

21. The ophthalmological implant as claimed in claim 19, wherein the rotationally symmetric structural code encodes the identification data of the ophthalmological implant by a barcode system.

22. The ophthalmological implant as claimed in claim 19, wherein the rotationally symmetric structural code is generated by lathing and/or milling, a diamond lathing and/or milling method, or a laser beam forming method directly during or after the forming of the ophthalmological implant.

23. The ophthalmological implant as claimed in claim 19, wherein the rotationally symmetric structural code is determined by a set of spatial modulation parameters.

24. The ophthalmological implant as claimed in claim 23, wherein the rotationally symmetric structural code is described by at least one of the following modulation parameters: groove width, groove depth, inclination angle of the groove, position of the groove, or a radial position of the groove.

25. The ophthalmological implant as claimed in claim 19, wherein the imaging optical element and the haptic including the haptic root are a unitary structure.

26. The ophthalmological implant as claimed in claim 19, wherein the rotationally symmetric structural code is formed during or directly after the forming of the ophthalmological implant.

27. A method of producing an ophthalmological implant, comprising: forming the ophthalmological implant by machining, lathing and/or milling or by a laser beam forming method; and forming a rotationally symmetric structural coding of identification data of the ophthalmological implant by application of the machining, lathing and/or milling or the laser beam forming method directly during or after the forming of the ophthalmological implant.

28. The method as claimed in claim 27, wherein the machining, lathing and/or milling further comprises forming the ophthalmological implant by diamond lathing and/or milling.

29. The method as claimed in claim 27, further comprising encoding a type and a refractive power in the rotationally symmetric structural coding of identification data.

30. The method as claimed in claim 27, wherein the ophthalmological implant comprises an intraocular lens

31. The method as claimed in claim 27, further comprising obtaining data, including control data, for carrying out the rotationally symmetric structural coding of identification data of the ophthalmological implant from control data for forming the ophthalmological implant and/or from monitoring data of the forming of the ophthalmological implant.

32. A characterization system for identifying an ophthalmological implant, as claimed in claim 19, comprising an illumination system that illuminates the structural code, a camera system that records structures of the structural code rendered detectable by application of the illumination, and an analysis unit that evaluates an image, recorded by the camera system, of the structures of the structural code rendered detectable by application of the illumination and that decodes identification data that identifies the ophthalmological implant from said image.

33. The characterization system as claimed in claim 32, further comprising a display and/or output apparatus that displays and outputs the decoded identification data of the ophthalmological implant.

34. The characterization system as claimed in claim 33, wherein the display and/or output apparatus, in conjunction with the analysis unit, is configured to further process identification data of the ophthalmological implant and/or to store the identification data in an external database and/or to compare the identification data to data from an external database and/or to provide feedback to a user.

35. The characterization system as claimed in claim 32, wherein the illumination system further comprises a slit illumination system.

36. The characterization system as claimed in claim 32, wherein illumination system and camera system operate with the light in a non-visible spectral range.

37. A microscopy system or a surgery microscopy system, comprising a characterization system as claimed in claim 32, and in which the decoded identification data of the ophthalmological implant are superimposed into a microscope image plane.

38. The microscopy system or the surgery microscopy system as claimed in claim 37, which is furthermore configured to evaluate the image recorded by the camera system to recognize changes in relative position and absolute position of the ophthalmological implant during an implantation into a patient's eye.

39. A computer program product with program code which, upon execution on a computer, generates data, to carry out structural coding of identification data of an ophthalmological implant or to deposit the structural coding in a primary mold, said data being generated from control data for a processing machine for forming an ophthalmological implant and/or from monitoring data of the forming of an ophthalmological implant as claimed in claim 19 or from control data for a processing machine for forming a primary mold and/or from monitoring data of the forming of said primary mold for the production of an ophthalmological implant as claimed in claim 19.

40. A computer program product as claimed in claim 39, wherein the generated data comprises control data that controls a processing machine.

41. A non-transitory computer readable data medium that is not a carrier wave or signal comprising a computer program as claimed in claim 39.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The present invention will now be explained on the basis of exemplary embodiments. In the drawings:

[0063] FIG. 1a depicts a first exemplary embodiment of an ophthalmological implant according to the invention with a structural code, FIG. 1b depicts the corresponding state diagram of the structural code thereof, FIG. 1c depicts a basic view of this structural code from above, and FIG. 1d depicts a section through the structural code of this implant.

[0064] FIG. 2a depicts a second exemplary embodiment of an ophthalmological implant according to the invention with a structural code, FIG. 2b depicts the corresponding state diagram of the structural code thereof, and FIG. 2c depicts a basic view of this structural code from above.

[0065] FIG. 3 depicts a third exemplary embodiment of an ophthalmological implant according to the invention with a structural code.

[0066] FIG. 4 depicts a characterization system according to the invention, which is part of a corresponding microscopy system.

DETAILED DESCRIPTION

[0067] FIG. 1a illustrates a first example embodiment of an ophthalmological implant 1 according to the invention with a structural code 5. This ophthalmological implant 1 is an intraocular lens, comprising a central optical lens 2, which represents the optically imaging element of this ophthalmological implant 1, and a haptic 3 with a haptic root 4, which adjoins the central optical lens 2 along a portion of the circumferential edge 2R of said central optical lens 2, and which partially surrounds the latter on two sides in the process. A structural code 5 of identification data for the ophthalmological implant 1 is arranged on the haptic root 4 and the region of the haptic 3 close to the haptic root 4 of this intraocular lens. Here, this case relates to the structural code 5 of the type and the refractive power of this intraocular lens. In this case, use has been made of a structural code 5 in the form of a barcode system, which is arranged in a rotationally symmetric manner around the central optical lens 2 on the haptic root 4 and on the haptic 3 in the direct vicinity of the central optical lens 2. The structural coding 5 carried out here by grooves generated using the same diamond lathing (and/or milling) method in the same diamond lathing (and/or milling) machine, either directly in or following the forming process of the intraocular lens, uses a 2-bit solution: Grooves are generated (groove depth 7 “1”) or no grooves are generated (groove depth 7 “0”) at different radial positions, in each case with a fixed groove width 6.

[0068] Thus, this case sees a restriction to a few modulation parameters: The radial position of the groove with in each case the same groove width 6, at which the state of 1 or 0 is possible in each case. Therefore, such a binary structural code 5 is generable and also readable again using very simple means since all that needs to be determined is whether or not a groove is present at the respective radial position 8.

[0069] Then, FIG. 1b shows the corresponding state diagram of the structural code 5 of this first example embodiment of the ophthalmological implant 1 according to the invention, i.e., of the first intraocular lens, in which the above-described two states are possible. FIG. 1c shows a basic view of this structural code 5 from above and FIG. 1d shows a section through the structural code 5 of this implant 1. Dashed lines were used to assign the same regions to one another.

[0070] Specifically, this first example embodiment illustrates a 2-bit code, which extends over a spatial width of approximately 1.0 mm. A pure depth modulation of the groove depth 7 for generating the two states 0 and 1 would be realizable, for example, with an amplitude of 5 μm-15 μm in the case of a tool radius of 10 μm.

[0071] If the structural code 5 generated with 2-bit coding in this first example embodiment is then decoded, the identification data for labeling this intraocular lens become apparent: This is an AT LARA toric 929 with a refractive power of SE=25 dpt and a cylinder correction of CYL=6.5 dpt.

[0072] FIG. 2a illustrates a second example embodiment of an ophthalmological implant 1 according to the invention with a structural code 5. Once again this is an intraocular lens, specifically of the same type and with the same refractive power, but with a structural code 5 which contains further modulation parameters and therefore allows spatial compression of the data structure: In this case, there is an additional modulation of the groove depth 7 over a plurality of levels 7′-1, 7′-2, 7′-3. As is evident from this second example embodiment, the same amount of data only still requires about half the spatial width when such a 4-bit code is used.

[0073] However, for decoding this, a higher resolution of a corresponding characterization system 10 is required for the purposes of identifying this intraocular lens than for decoding the first example embodiment: A depth resolution of the groove depth such that the different levels 7′-1, 7′-2, 7′-3 can be distinguished from one another is required in this case.

[0074] If the structural code 5 generated with 4-bit coding in this second example embodiment is then decoded, the identification data for labeling this intraocular lens also become apparent in this case. Here, too, this is an AT LARA toric 929 with a refractive power of SE=25 dpt and a cylinder correction of CYL=6.5 dpt.

[0075] As already described above, the modulation parameters can also still comprise, e.g., the groove width 6 and/or the inclination angle of the groove in addition to the above-described radial position 8 of the grooves and the groove depth 7 in order to further compress the structural code 5 and house the same identification data in even less spatial width, or else in order to house substantially more information, i.e., additional identification data, over the same spatial width. What can be used here as a modulation parameter depends on what optical detection method and what characterization system 10 can be worked with and consequently whether the corresponding modulation parameter can be captured therewith.

[0076] Then, FIG. 2b shows the corresponding state diagram of the structural code 5 of this second example embodiment of the ophthalmological implant 1 according to the invention, i.e., of the second intraocular lens, in which the above-described four states (four different depths) are possible. FIG. 2c shows a basic view of this structural code 5 from above.

[0077] FIG. 3 illustrates a third ophthalmological implant 1 according to the invention with a structural code 5; this is an intraocular lens of the type AT LISA tri 809 with a refractive power of 25.0 dpt.

[0078] Finally, FIG. 4 shows a characterization system 10 according to the invention for identifying an ophthalmological implant 1, in particular an intraocular lens, said characterization system being part of a corresponding microscopy system 15.

[0079] This example embodiment of a characterization system 10 according to the invention comprises an illumination system 11 for illuminating a structural code 5 of an intraocular lens, a camera system 12 for recording structures of the structural code 5 of the intraocular lens which have been rendered detectable by application of the illumination, an analysis unit 13 for evaluating an image, recorded by the camera system 12, of the structures of the structural code 5 rendered detectable by use of the illumination and for decoding of identification data for identifying the ophthalmological implant 1 from this image, and also a display and/or output apparatus 14 for displaying and/or outputting the decoded identification data of the ophthalmological implant 1.

[0080] In this case, this example embodiment of the characterization system 10 according to the invention can also decode intraocular lenses which have already been implanted in a patient's eye 20.

[0081] In this case, the aforementioned features of the invention, which are explained in various example embodiments, can be used not only in the combinations specified in an example manner but also in other combinations or on their own, without departing from the scope of the present invention.

[0082] A description of an apparatus relating to method features is analogously applicable to the corresponding method with respect to these features, while method features correspondingly represent functional features of the apparatus described.