WO2021069658A1 - Vorrichtung und verfahren zur linsenchirurgie - Google Patents
Vorrichtung und verfahren zur linsenchirurgie Download PDFInfo
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- WO2021069658A1 WO2021069658A1 PCT/EP2020/078403 EP2020078403W WO2021069658A1 WO 2021069658 A1 WO2021069658 A1 WO 2021069658A1 EP 2020078403 W EP2020078403 W EP 2020078403W WO 2021069658 A1 WO2021069658 A1 WO 2021069658A1
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- Prior art keywords
- lens
- eye
- receiving space
- cut surfaces
- fastening area
- Prior art date
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- 238000001356 surgical procedure Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 46
- 230000002093 peripheral effect Effects 0.000 claims abstract description 51
- 230000005855 radiation Effects 0.000 claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims description 23
- 210000002159 anterior chamber Anatomy 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 210000000695 crystalline len Anatomy 0.000 abstract 8
- 230000004308 accommodation Effects 0.000 abstract 2
- 210000001508 eye Anatomy 0.000 description 110
- 239000000463 material Substances 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 208000002177 Cataract Diseases 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- 239000002775 capsule Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000012937 correction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 206010047661 Vitreous prolapse Diseases 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 210000004127 vitreous body Anatomy 0.000 description 3
- 210000005252 bulbus oculi Anatomy 0.000 description 2
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- 238000006073 displacement reaction Methods 0.000 description 2
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- 238000002513 implantation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000011477 surgical intervention Methods 0.000 description 2
- 208000008516 Capsule Opacification Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
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- 230000001419 dependent effect Effects 0.000 description 1
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- 210000003488 posterior eye segment Anatomy 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 201000010041 presbyopia Diseases 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- A61F9/008—Methods or devices for eye surgery using laser
- A61F9/00825—Methods or devices for eye surgery using laser for photodisruption
- A61F9/00834—Inlays; Onlays; Intraocular lenses [IOL]
-
- 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
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00844—Feedback systems
-
- 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
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/0087—Lens
-
- 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
- A61F9/008—Methods or devices for eye surgery using laser
- A61F2009/00861—Methods or devices for eye surgery using laser adapted for treatment at a particular location
- A61F2009/00872—Cornea
Definitions
- the invention relates to a device and a method for lens surgery on the human eye, using an intralenticular intraocular lens, in particular for refractive lens surgery, for example cataract surgery.
- Intraocular lens insertion is a common treatment used to treat cataracts.
- the lens of the eye clouded by the cataract is removed and replaced with an implanted intraocular lens.
- optical concepts have been implemented that realize the correction of presbyopia and / or correct an astigmatism.
- cataract surgery experienced a change from classic geriatric surgery to refractive surgery with the aim of achieving freedom from glasses over all visual distances and with the highest quality of vision.
- the great majority of the intraocular lenses are implanted in the remaining empty remainder of the capsular bag.
- the anterior capsular bag membrane is opened by a capsulorhexis, the natural lens of the eye is crushed and removed, and the posterior chamber intraocular lens is inserted into the remaining capsular bag.
- short pulse lasers in particular fs short pulse lasers, have been developed in recent years to generate the capsular hexis and the access incisions on the front of the eye and / or the shredding of the eye lens in the opened capsular bag are laser-based and therefore “knife-free” " to realize.
- So-called posterior chamber intraocular lenses for implantation in the capsular bag have holding devices that are referred to as "haptics" and are attached to the actual lens body of the intraocular lens in order to fix and position it correctly in the capsular bag.
- Another way to use an intraocular lens is to fix it to the iris.
- So-called anterior chamber intraocular lenses are used for this purpose.
- a special form of the intraocular lens is addressed in WO 2019/048708 A1, namely an intralenticular intraocular lens. It is distinguished by the fact that it is fixed in a remaining part of the lens of the eye.
- the intraocular lens is processed with an unspecified fs laser device in such a way that a through opening is created in the central area of the eye lens, which provides space for the intraocular lens. Only the capsular bag remains posterior to the passage opening. The eye lens, however, is completely removed in the through opening.
- the receiving space created in the eye lens has on its outer edge a peripheral fastening area which has several axially spaced annular grooves.
- An intraocular lens is used in such a way that its haptics engage in one of the ring grooves. With axially spaced annular grooves, the surgeon can select the position along the eye axis from various options.
- the lens separates the anterior chamber from the vitreous humor.
- vitreous prolapse i.e. displacement of the vitreous into the anterior chamber.
- Conventional intraocular lenses therefore have comparatively stable haptics, which are provided in the form of arms on the edge of the intraocular lens and ensure that the inserted intraocular lens resists a displacement of the vitreous body or makes it impossible.
- an intraocular lens is of paramount importance for the success of the surgical intervention.
- Adapt mean refractive results through statistical optimization of constants of the intraocular lens, ie their optical design.
- the greatest challenge in implantation is the limited predictability of the refractive result in the individual case, ie for the individual patient.
- the difficulties in forecasting arise primarily from the limited predictability of the stationary post-operative anterior chamber depth and the centering and tilting of the intraocular lens. The latter is due in particular to the haptics that are attached to the lens body and align it.
- the invention is based on the object of improving a device and a method for refractive eye surgery through the use of an intralenticular intraocular lens, in particular with regard to precise and stable positioning of the intraocular lens.
- a device for performing lens surgery, in particular refractive lens surgery, on the human eye comprises a laser device for separating tissue from the eye lens and capsular bag in a focus of pulsed laser radiation.
- the laser device emits pulsed laser radiation and focuses it into the eye.
- the pulsed laser radiation and the focusing are designed in such a way that tissue is separated from the lens of the eye and the capsular bag.
- a focus positioning device is provided for setting and adjusting an Or tes of the focus. As a result, the device can be adjusted by adjusting the location of the kus form a cut surface.
- a registration device is provided which is designed to reference the position of the location of the focus with respect to the position of eye structures which include the eye lens and the capsular bag.
- a control device of the device reads the data from the register and controls the focus positioning device. It is designed in such a way that it provides the focus positioning device with a pattern for the position of the focus that forms certain cut surfaces.
- the cut surfaces separate layers of tissue in the eye lens to create a receiving space for an intralenticular intraocular lens.
- the receiving space has a recess for a lens body of the intraocular lens and, in embodiments, is open to the anterior chamber.
- the receiving space also realizes at least one of the following features and can therefore be implemented in variants:
- the receiving space comprises a peripheral fastening area for fixing the lens body in a single, predetermined, axial position.
- the receiving space comprises a fastening area for fixing the lens body, the receiving space and fastening area being designed for sealingly receiving the intraocular lens, so that the anterior chamber of the eye is separated from the rear sections of the eye.
- a continuous posterior layer of tissue of the eye lens remains posterior to the recess which is provided for the lens body.
- a device for planning lens surgery on the human eye comprises an input interface for inputting measurement data which indicate a position of eye structures including the eye lens and the capsular bag.
- the device further comprises a computer device for defining cut surfaces in the eye lens and for determining a pattern of locations of a focus of pulsed laser radiation, the locations being in the defined cut surfaces.
- the device further comprises an output interface for outputting data which represent the pattern of locations to which the pulsed laser radiation is to be output from a device. The data are thus output to the device emitting the pulsed laser radiation.
- the computer device defines the cut surfaces as already explained for the device for performing lens surgery. The cut surfaces separate tissue layers in the eye lens to create a receiving space with the properties mentioned, in particular in one or more of the variants a to b.
- a method for preparing a lens surgery on the human eye comprises several steps: acquisition of the position of measurement data which indicate a position of eye structures including the eye lens and the capsular bag; Establishing cutting surfaces in the eye lens and determining a pattern of locations of a focus of pulsed laser radiation, the locations being in the defined cutting surfaces; and Generation of data representing the pattern of locations for a device emitting the pulsed laser radiation.
- the cut surfaces separate Gewebeschich th in the eye lens to create a receiving space with the properties already mentioned above for the devices, in particular with the features of one or more of the variants a to c.
- a method for lens surgery on the human eye comprises the provision of an intra-lenticular intraocular lens comprising a lens body, the creation of cut surfaces in the eye lens, the cut surfaces in the eye lens separating tissue layers to create a receiving space with the mentioned properties, and the removal of one through the cut surfaces limited volume.
- the method also includes inserting the intraocular lens into the receiving space.
- Variants a to c of the device for performing lens surgery, the device for planning lens surgery and the method for preparing lens surgery or for performing lens surgery achieve a wealth of advantages.
- One of the most important advantages is that with each variant alone or with any combination of the variants, the axial position of the lens body is precisely defined and cannot be influenced by the glass body. In particular, no special haptics are required which support the lens body against a possible vitreous prolapse.
- the axial position of the lens body is precisely determined by the receiving space and thus ultimately the defined cut surfaces. In the run-up to the intervention, the cut surfaces are determined in order to place the receiving space axially (and of course also laterally) at precisely the point that is required for a desired optical correction.
- the device in which there is also a measuring device which measures the eye so that the definition of the recording space can be derived from the measurement data.
- a measuring device is used analogously in the method.
- the measuring device does not have to be used directly during the procedure; it can also be kept available as a stand-alone device so that the measurement is carried out before the surgical procedure.
- the registration device is provided in order to be able to ensure the exact position of the cut surfaces in the shape and size position defined after the measurement. It references the position of the location at which the cut surface is generated by means of the pulsed laser radiation to the position of eye structures including the eye lens and the capsular bag. This referencing makes the measurement of the eye temporally and spatially as well as device-technically independent of the surgical procedure itself.
- the measuring beam of the measuring device with optical means with the processing beam of the pulsed Register laser radiation were previously guided, for example, via the same scanner and the same objective. Since reference is now made to the location of eye structures, is an optical coupling of the measuring device and treatment device is no longer necessary. Rather, it is sufficient if the measuring device allows the position of optical eye structures to be recognized in the measurement data, which are also recorded by the registration device, so that the referencing takes place on structures of the eye. Possible structures are the iris, structures in the front of the eye or in the posterior chamber, or structures in the lens of the eye or in the capsular bag or tissue structures connected to them.
- the measurement and the registration can still be carried out with a single device, provided that this device meets the requirements of a measuring device and the device is integrated into the device for performing lens surgery.
- this device meets the requirements of a measuring device and the device is integrated into the device for performing lens surgery.
- preference is given to using two different devices for this purpose, because a device that is only used for registration can be made much simpler.
- a major advantage of embodiments of the implemented interlenticular attachment according to variant b is that the receiving space is / is designed so that the intraocular lens and in particular its dimensionally stable lens body together with the remaining tissue of the eye lens, the anterior chamber, lie close to the anterior of the capsular bag the sections.
- the axial position and thus the design of the receiving space and - if provided - the peripheral fastening area can be predetermined precisely and individually for each patient.
- the pattern of the focus location, which ultimately defines the cut surface for the peripheral fastening area is thus to be determined individually for each patient by the control device or in the method.
- a continuous posterior layer of tissue of the eye lens remains posterior to the recess for the lens body.
- cataracts can arise if the remaining posterior capsular bag is cloudy due to deposits when the lens of the eye anterior to the posterior capsular bag has been removed.
- the risk of cataracts can also be reduced if the receiving space is formed in such a way that the posterior capsular bag is also opened by the pattern and can thus be removed.
- a particularly preferred embodiment of one of the variants a to c provides for an anterior layer of tissue of the eye lens to be left anterior to the receiving space only in a peripheral eye lens area, so that the recess for the dimensionally stable lens body is open to the anterior chamber within this peripheral eye lens area .
- the receiving space is then possible to design the receiving space as an anteriorly open pocket for an intraocular lens, which only consists of the dimensionally stable lens body.
- the peripheral fastening area is then axially formed as an undercut that tapers outward.
- an intraocular lens which has a consistently designed as a lens body th body, the annular outer edge being used in the attachment area according to Vari ante a or b.
- the lens body and / or the edge lies sealingly against an inside of the receiving space.
- the rim is inserted into the undercut in order to secure the intraocular lens as a whole.
- There are therefore no more dedicated fastening sections on the intraocular lens which, on the one hand, enables simple fastening and, on the other hand, realizes a large effective optical area around the optical axis. She has z. B. no haptics.
- the intralenticular intraocular lens is completely enclosed by remaining tissue of the eye lens after it has been inserted.
- a tissue layer of the eye lens remains not only posterior to the recess but also anteriorly, which is continuous except for an access incision leading to the receptacle, which penetrates the tissue of the eye lens and the capsular bag.
- this access incision removes the material of the receiving space from the interior of the eye lens.
- material for the lens body of the intraocular lens is injected into the receiving space through the access incision. It hardens through polymerisation.
- the spatial fixation of the intraocular lens is particularly precise and unchangeable in this way, since the intralenti cal intraocular lens is enclosed on all sides by the remaining tissue of the eye lens when it is inserted.
- the intraocular lens is fastened without the usual haptics, that is to say without the usual little arms. It is therefore particularly preferred for all variants to design the peripheral fastening area for a snap-lock fastening. This usually provides that the intraocular lens is introduced into the fastening area in a first position and then rotated around the optical axis or an axis largely parallel to the optical axis by a certain angular amount, so that snap-lock jumps are rotated into a corresponding receptacle on the fastening area.
- the peripheral fastening area is not rotationally symmetrical, but has sections for inserting the snap-locks, which are provided on the intraocular lens, and sections in which the snap-locks are latched.
- the transition from one incision to the other occurs by rotating the intraocular lens about its optical axis or an axis that is largely parallel to it.
- the term “largely parallel” refers to a possibly desired tilting of the intraocular lens relative to the optical axis of the eye or to the visual axis of the eye. This can be in the range of ⁇ 10 °.
- the peripheral fastening area can be designed with a thread structure for screwing in a corresponding counter-thread structure on the edge of the dimensionally stable lens body of the intraocular lens.
- the peripheral fastening area is provided with a z. B. formed on the snap-lock area adjoining shoulder on which the dimensionally stable lens body of the intraocular lens comes to rest in order to ensure precise alignment.
- This shoulder is particularly preferably designed to be conical and to rest against a corresponding counter-conical edge of the dimensionally stable lens body. In this way, in particular, the axial position of the lens body of the intraocular lens is determined with high precision.
- FIG. 1 to 12 sectional views through a schematically shown eye with intralentiku lar intraocular lenses in different embodiments
- FIG. 13 shows a sectional illustration and four plan views of an eye lens into which one
- Intraocular lens is inserted with a snap-lock technique
- 15 shows a schematic representation of a device for preparing the lens of the eye
- 16 is a schematic illustration of a pattern at focus locations for generating a
- FIG. 17 shows a schematic representation of a device for planning a surgical intervention on the human eye lens.
- Fig. 1 shows schematically a sectional view through an eye with an intraocular lens inserted into the remains of an eye lens. Reference numerals of FIG. 1 are also used in the other figures for structurally or functionally identical components.
- the eye has a cornea with a rear side 1 a facing an anterior chamber 7 of the eye and a front side 1 b.
- the anterior chamber 7 is delimited by the iris 2, which has a sulcus 3 in the area of the posterior chamber.
- Zonular fibers 4 connect a capsule sack 5 with the rest of the eyeball.
- An eye lens 6 is located in the capsular bag 5, the capsular bag having a front capsule membrane 6a and a rear capsule membrane 6b.
- a pupil 7 is delimited by the iris 2 and, as is known, a retina is located at the end of the eyeball.
- an intraocular lens 9 is inserted into the eye lens 6, for which purpose cut surfaces 8 are generated in the eye lens 6 by means of a laser processing device, which will be explained later with reference to FIG. 15, which delimit the material that is to be removed . This is done in such a way that the eye lens 6 provides a receiving space 6d for the intraocular lens 9.
- the receiving space 6d has a recess 6e for a lens body of the intraocular lens 9 and a peripheral area thereof is the fastening area 6f.
- the material bounded by the cut surfaces 8 corresponds to those points in FIG. 1 in which the eye lens consisting of a lens body with wide hatching and a capsular bag drawn as a double line is missing.
- this is the receiving space 6d, which is composed of the volume in which the recess 6e is created and the opening access at the front.
- the cut surfaces 8 are generated by means of laser radiation. They delimit the material that is then removed in order to create the receiving space 6d.
- the cut surfaces 8 define the inner surfaces of the receiving space 6d, so that the guidance of the laser beam for generating the cutting surface 8 defines the geometry and position of the receiving space 6d.
- the receiving space 6d is in turn dimensioned such that it holds the intraocular lens 9 in a predetermined and unchangeable axial (and also lateral) position, as will be explained later, in the desired angular position to the visual axis.
- the definition of the cut surfaces 8 is tailored to the individual needs of the patient and the intraocular lens 9 to be used.
- the cut surfaces 8 are designed and executed so that the receiving space 6d is lens-shaped, and the intraocular lens 9 consists exclusively of the dimensionally stable lens body 9a, which is sealingly anchored in the fastening area 6f designed as an undercut 12.
- the receiving space 6d has an opening in the area of the pup 7 both in the front capsule membrane 6a and in the one below Eye lens 6 on. Both tissues were only left to stand in a ring in an anterior area, so that a pocket was formed.
- FIG. 2 essentially corresponds to that of FIG. 1, but here the recess 6e is not designed as a depression, but as a central channel in the eye lens 6, since eye lens tissue 11 posterior to the intraocular lens 9 has also been removed.
- the eye lens 6 thus remained only in two annular areas, namely anterior (10) and posterior (6c) and thus forms a fixation pocket for the eye lens 9.
- the anterior capsule membrane 6b remained. This is optional. It could also be removed. The seal is then also given.
- FIG. 3 shows a modification of the embodiment of FIG. 1.
- the intraocular lens 9 has a lens body 9a which ends peripherally in a snap-lock mechanism.
- the directly adjoining peripheral fastening area 6f is also formed in the eye lens 6 to match a snap-lock mechanism 13 of the intraocular lens 9. This will be explained in more detail later with reference to FIGS. 13 and 14.
- FIG. 4 corresponds to the illustration in FIG. 2, but for the snap-lock mechanism of FIG. 3. In FIG. 4, too, it is optional to leave the capsular bag 6b standing.
- FIG. 5 illustrates the advantages of fastening the intraocular lens 9 with the dimensionally stable lens body 9a in such a way that it is directly adjacent to the remaining tissue 6c of the eye lens. Since only a single peripheral fastening area, here for receiving the snap-lock mechanism 13, is provided, it is possible to arrange the eye lens tilted by a certain angle 25 and thus to realize an individualized alignment.
- FIG. 6 shows an embodiment similar to FIG. 1, but now the remaining eye lens tissue 6c has a thread structure 17 into which a correspondingly matching thread structure of the intraocular lens 9 is screwed.
- the residual thickness of the eye lens 6, which is left posteriorly, ensures that the axial position of the intraocular lens 9 is precisely predetermined when the intraocular lens 9 is screwed into the threaded structure 17.
- this stop is not provided, which allows the surgeon a greater degree of freedom in setting the axial position of the intraocular lens consisting only of the lens body 9a with the threaded structure.
- the intraocular lens is then expediently fixed in the area of the threaded structure 17 by means of an adhesive fastening.
- FIG. 8 shows an embodiment similar to FIGS. 4 and 5.
- the intraocular lens 9 is additionally provided with a conical edge on the edge of the lens body 9a, which tapers in the posterior direction, that is, towards the retina 8.
- the remaining tissue 6c of the Eye lens 6 is designed with a corresponding conical edge 18 as a shoulder, which precisely defines the axial position of lens body 9a when the eye lens is inserted using snap-lock technology.
- the construction of FIG. 9 differs from this only in that the capsular bag, ie the capsular membrane, is also removed posterior to the lens body 9a, that is to say a posterior lens body surface 9b is exposed. Nevertheless, the sealing mentioned is also given here.
- FIGS. 10 and 11 illustrate that the lens body 9a can also be designed in such a way that it forms a smooth continuation of the anterior capsule membrane on the front side. There are thus no corners on the boundary surface to the anterior chamber, which can be biologically before geous.
- this realization can be realized both with an unopened anterior capsular bag 6b (FIG. 10) and with an open anterior capsular bag and correspondingly exposed back of the lens body 9a (FIG. 11). Since it is only the curvature of its axial boundary surfaces that is important for the lens body 9a with regard to the optical effect, an increase in the mean thickness is not a problem for optical reasons.
- FIG. 12 shows a further development with a protruding edge 14 on the front side of the lens body 9a. This improves the seal between the front chamber and the rear chamber. The seal maintains the separation of the vitreous body and anterior chamber that exists in the natural eye, even after the operation, independently of the capsular membrane. It is implemented in all of the embodiments of FIGS.
- FIG. 13 illustrates the snap-lock technique used in embodiments for fastening the intraocular lens 9 in the remaining tissue 6c of the eye lens 6.
- the upper illustrations in FIG. 13 show a sectional illustration along the lines AA and BB.
- the snap-lock mechanism is used to fix the intraocular lens 9 in the remaining tissue 6c of the prepared natural eye lens.
- a three-dimensional pocket is cut and the tissue of the eye lens 6 that is not required is comminuted and removed.
- the pocket has a suitable entry window 21 through which wings 13 of the intraocular lens 9 can be inserted. By rotating the intraocular lens 9, the wings 13 are guided posteriorly from best existing lens material and the lens 9 is thus fixed in its axial and rotational position.
- the intraocular lens 9 is rotated until the wings 13 hit a mechanical stop surface 19 on. This surface defines the correct rotational position and thus the correct axial position for the correction of the astigmatism in a toric intraocular lens.
- a mechanical stop surface 19 defines the correct rotational position and thus the correct axial position for the correction of the astigmatism in a toric intraocular lens.
- at least one wing 13 is optionally guided over a detent 20.
- the entrance window 21 is executed in the three-dimensional prepared pocket for each wing 13, through which the Wings can be inserted into the peripheral attachment area 6f before the intraocular lens 9 is rotated.
- the intraocular lens 9 with its lens body 70 which provides the optical effect of the intraocular lens, is fixed in a predetermined axial and rotational position by the wings 13 for the snap-lock attachment being formed on the edge 72 of the lens body 70 .
- the intraocular lens 9 has no haptics, that is to say no attached arms which attach the otherwise freely hanging intraocular lens.
- FIG. 13 shows top views of the receiving space 6d created in the tissue 6c of the natural lens of the eye (first illustration from the left), the state with the lens body anchored in the receiving area in a sectional plane which corresponds to the center plane of the lens (second illustration from FIG left), a section, as in the second illustration from the left, but for a variant without detent 20 (third illustration from the left), and an illustration in the same sectional plane for a variant without an end stop and without a detent position (right illustration of FIG. 13) .
- the intraocular lens has two wings for snap-lock attachment.
- a bore 23 is shown as an example, which can be used for positioning and rotating the intraocular lens 9.
- the wings 13 lie outside an optical zone of the intraocular lens.
- only one wing 13 is provided.
- four wings 13 are formed on the lens body 9a from the left.
- the illustration on the right finally relates to a lens body 9a with a threaded structure 17 for the embodiments of FIGS. 6 and 7.
- the device 28 has an fs short-pulse laser as used in the prior art for generating optical openings and for separating tissue in the eye lens and in the capsular bag is known.
- the radiation from the laser 32 is focused into the eye lens 6 or the capsular bag via a scanning mechanism 34 for 3D adjustment of the focus position in the eye 30 and optics 38 so that tissue can be separated there and the eye lens 6 can be prepared as described above .
- the radiation also runs through a beam splitter 38, into which the beam path of a measuring device 40, for example an optical coherence tomograph, a wavefront sensor, a slit lamp and / or a Scheimpflug camera, is coupled.
- a measuring device 40 for example an optical coherence tomograph, a wavefront sensor, a slit lamp and / or a Scheimpflug camera
- Laser 32, scanner 34 and measuring device 40 are connected to a control device 42, which receives the measured data from measuring device 40, determines the position of the eye structures, in particular of the eye lens and capsular bag in eye 30, determines a shot pattern for fs short-pulse laser 32 and the three-dimensional beam deflection 34 (in which the objective 36 can optionally also be involved) controls in such a way that the cut surfaces for the desired creation of the receiving space with the recess for the dimensionally stable lens body 9c of the intraocular lens 9 and the peripheral fastening area 6c for fixing the lens body is correspondingly separated from the remaining eye tissue 6c so that after this severed tissue has been removed, the corresponding structures are prepared in order to be able to insert the interlenticular intraocular lens 9.
- the optical connection of the measuring device 40 can be freely selected and does not necessarily have to lead through the optics 38.
- the measuring device 40 (which precisely measures and also references the eye) is external, and internally, for example coupled to the beam path, there is a simple registration device that determines the referencing (structures) determined by the measuring device were found again.
- FIG. 16 schematically shows a pattern 50 of locations 52 for the focus, as it is effected by the scanning mechanism 34 under control by the control unit 42.
- a cut surface 8 is generated, which in FIG. 16 is purely planar and square as an example.
- the device is essentially formed by a planning station 60, which has an input interface 62 in order to receive measurement data about the eye 30 that originate from a measurement device 64.
- a measurement device 64 This can be, for example, an optical coherence tomograph that records the structure of the eye and, in particular, images the lens of the eye with sufficient accuracy.
- the data supplied at the input interface 62 are then used by a computer device 66 in order to define the cutting surface.
- a surgeon can make appropriate entries at the planning station 60 in order to define the cut surfaces 8 accordingly.
- a database can already be kept in the planning station 60 which contains information, in particular geometry and dimensions, about possible intraocular lenses 9.
- the planning station 60 outputs control data for the control device 42 at an output interface 68.
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Abstract
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Priority Applications (4)
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EP20789937.8A EP4041152A1 (de) | 2019-10-10 | 2020-10-09 | Vorrichtung und verfahren zur linsenchirurgie |
JP2022521099A JP2022551305A (ja) | 2019-10-10 | 2020-10-09 | 水晶体手術のための装置及び方法 |
US17/767,960 US20240091065A1 (en) | 2019-10-10 | 2020-10-09 | Apparatus and method for lens surgery |
CN202080070711.XA CN114746053A (zh) | 2019-10-10 | 2020-10-09 | 用于晶状体手术的设备和方法 |
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DE102019127343.9A DE102019127343A1 (de) | 2019-10-10 | 2019-10-10 | Vorrichtung und Verfahren zur Linsenchirurgie |
DE102019127343.9 | 2019-10-10 |
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JP (1) | JP2022551305A (de) |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004017878A1 (de) * | 2002-08-20 | 2004-03-04 | Quintis Gmbh | Laserbasierte vorrichtung zur nichtmechanischen, dreidimensionalen trepanation bei hornhauttransplantationen |
PT2148628T (pt) * | 2007-05-07 | 2017-12-06 | Jaswant Rathore | Um método e um sistema para fotoablação a laser dentro do cristalino |
CA3055996A1 (en) * | 2017-03-13 | 2018-09-20 | Kejako Sa | Accommodative lens device |
US20190076241A1 (en) * | 2017-09-11 | 2019-03-14 | Amo Groningen B.V. | Methods and apparatuses to increase intraocular lenses positional stability |
US20190290487A1 (en) * | 2011-03-21 | 2019-09-26 | Brien Holden Vision Institute Limited | Restoration of Accommodation by Lens Refilling |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3375410A1 (de) * | 2017-03-13 | 2018-09-19 | Kejako Sa | Anpassabre linsenvorrichtung |
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2019
- 2019-10-10 DE DE102019127343.9A patent/DE102019127343A1/de active Pending
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2020
- 2020-10-09 CN CN202080070711.XA patent/CN114746053A/zh active Pending
- 2020-10-09 WO PCT/EP2020/078403 patent/WO2021069658A1/de active Application Filing
- 2020-10-09 JP JP2022521099A patent/JP2022551305A/ja active Pending
- 2020-10-09 US US17/767,960 patent/US20240091065A1/en active Pending
- 2020-10-09 EP EP20789937.8A patent/EP4041152A1/de active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004017878A1 (de) * | 2002-08-20 | 2004-03-04 | Quintis Gmbh | Laserbasierte vorrichtung zur nichtmechanischen, dreidimensionalen trepanation bei hornhauttransplantationen |
PT2148628T (pt) * | 2007-05-07 | 2017-12-06 | Jaswant Rathore | Um método e um sistema para fotoablação a laser dentro do cristalino |
US20190290487A1 (en) * | 2011-03-21 | 2019-09-26 | Brien Holden Vision Institute Limited | Restoration of Accommodation by Lens Refilling |
CA3055996A1 (en) * | 2017-03-13 | 2018-09-20 | Kejako Sa | Accommodative lens device |
US20190076241A1 (en) * | 2017-09-11 | 2019-03-14 | Amo Groningen B.V. | Methods and apparatuses to increase intraocular lenses positional stability |
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Publication number | Publication date |
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CN114746053A (zh) | 2022-07-12 |
EP4041152A1 (de) | 2022-08-17 |
DE102019127343A1 (de) | 2021-04-15 |
US20240091065A1 (en) | 2024-03-21 |
JP2022551305A (ja) | 2022-12-08 |
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