DE202013104313U1 - Intraokularlinsenstruktur - Google Patents

Abstract

An intraocular lens structure (IOL) (1) for implantation in the capsular bag and for securing the IOL in an opening in a front portion of a capsular bag, with a front capsular bag strap surrounding said opening, said IOL having a front surface in use when the IOL has been implanted in the capsular bag (22) of an eye, oriented toward a cornea of the eye, and a posterior side that, in use, when the IOL is implanted in an eye, is oriented toward a retina of the eye wherein said IOL (1) comprises: - an optical structure (2) having a periphery (7); At least two rear supports (5, 5 ') connected to and extending from said periphery (7) of said optical structure (2), said rear supports (5, 5') being shaped in use, providing support surfaces (13, 13 ') for receiving a posterior surface of a front capsular bag tab, said posterior supports (5, 5') being in the capsular bag (22) when the IOL (1) in the capsular bag ( 22), and - at least two front supports (6, 6 ') connected to and extending from said periphery (7) of said optical structure (2), intended to be located outside the capsular bag and extending from said optical structure (2), said front supports (6, 6 ') being configured to have support surfaces (14, 14') in use for receiving a front surface of a front capsule A back plate, which is defined by the support surfaces (13, 13 ') of the rear supports (5, 5'), and a front plane, which is defined by the support surfaces (14, 14 ') of the front supports (6, 6 ') are adapted to be spaced from each other in use at a distance therebetween configured to hold between them a front capsular bag tab for retaining the IOL (1) in said opening (32).

Description

Field of the invention

The invention relates to an intraocular lens structure (IOL) and a method for using such an IOL.

Background of the invention

Modern cataract surgery methods, also known as extracapsular cataract extraction, cut a hole in the anterior capsular bag. This can be done with the help of laser devices. Then the natural lens is removed. In the remaining parts of the capsular bag, an IOL is used in many proposed methods. The IOL stays more or less in position in the empty bag.

Usually, an IOL is provided with a haptic. This haptic extends radially out of a lens of an IOL. After implantation of an IOL, this haptic normally engages the inner periphery of the remaining capsular bag portion to hold the optic, such as a lens, more or less centered and positioned within the capsular bag.

To improve the fixation of the position of an IOL, numerous designs have been proposed. US6027531 "An intraocular lens for use in extracapsular cataract extraction has a haptic portion that surrounds the optical portion of the lens and further includes a groove of such shape that it covers the anterior and posterior capsules of the lens pouch following anterior capsulorhexis, extracapsular cataract extraction, and posterior capsulorhexis can record. The lens is preferably used in a calibrated, circular and continuous, combined anterior and posterior capsulorhexis, slightly smaller than the inner circumference of the groove, such that an extension of the edges of the capsular openings is effected. It is believed that this new approach prevents the capsules from fogging, provides a very stable fixation of the intraocular lens and ensures a tight separation between the anterior and posterior segments of the eye. This new insertion principle is called 'bagin-the-lens' technique, in contrast to the classic 'lens-in-the-bag' technique. "Implanting this IOL requires skill and the capsular bag may be damaged. If the capsular bag breaks after insertion, the IOL will not stay in place.

In US6881225 An intraocular lens structure for reducing complications is described. The intraocular lens structure consists of an optic, a support and a locking device. The locking device is a groove or a valley formed on the side part of the optic of the intraocular lens. The valley is formed by the optics and by a projection that protrudes from the optics behind. The groove or valley in the optic is adapted to engage the posterior capsular opening, generally the entire circumference of the groove or valley, to close the opening of the posterior capsule. Like most current IOL structures, the structure also uses its feel to hold the structure in the capsular bag. The groove holds the back part of the capsular bag.

US5171320 describes an intraocular lens system that is implantable within a generally circular opening in a front wall of the capsular bag that normally contains the crystalline lens of an eye. The intraocular lens system comprises a lens body having an annular groove formed in a peripheral part thereof in a plane substantially perpendicular to an optical axis of the lens body. The lens body has an optically effective portion disposed radially in the annular groove, and a front lens portion and a rear lens portion respectively disposed on the front and rear sides of the annular groove. The intraocular lens system is held in position within the circular opening in such a manner that an annular tab portion of the capsular bag surrounding the circular opening is received in the annular groove in the lens body.

Summary of the invention

A drawback of the prior art is that insertion of the IOL can be very difficult and there is a high risk that the capsular bag will be damaged during the procedure or may be damaged or implanted after implantation of the IOL.

Thus, it is an aspect of the invention to provide an alternative IOL that preferably at least partially obviates one or more of the disadvantages described above. In particular, the IOL of the invention allows for proper and easy implantation. Alternatively or additionally, it results in less damage to the capsular bag and allows for secure positioning.

The invention provides an intraocular lens structure according to claim 1.

It was found that due to the geometry and the limited depth (about 0.2 mm) of the According to the state of the art circumferential groove in known IOLs the front capsular bag tab could easily escape from said groove, which leads to a dislocation of the IOL. Moreover, the rotational stability of the lens structure may not be optimal due to the prior art geometry of the groove.

The IOL can be inserted into the capsular bag. The anterior and posterior supports allow the fixation of the IOL with its optical structure aligned with an aperture, in particular an aperture or aperture, in a capsular bag.

The terms "forward" and "behind" refer to an arrangement of features related to the propagation of the light into the eye. Thus, the light enters through the cornea and traverses the pupil through the iris. Cornea and iris are considered as anterior parts of the eye. Subsequently, the light propagates to the retina, which is located in the back of the eye.

The axis of an eye can be the optical axis or the visual axis, the line of sight or the pupil axis.

An eye has a capsular bag that normally holds the natural lens. If conditions exist that require the removal of this natural lens, an empty capsule bag will remain. Usually, to remove the natural lens, an opening is first made in the front part of the capsular bag. Part of the capsular bag membrane is removed. There remains a through hole surrounded by a peripheral edge defining the circumference. Such an opening may be, for example, circular or elliptical. The front membrane of the capsular bag is thus provided with an aperture which provides a diaphragm which allows access to the capsular bag.

The part of the capsular bag closest to the cornea is also referred to herein as the anterior capsular bag portion. The remaining front capsular bag portion surrounding the mentioned opening is referred to herein as the front capsular bag tab. This can also be considered as a ring of capsular bag membrane.

The capsular bag also has a back part. This is the part of the capsular bag closest to the retina. The average capsular bag thickness is 4 to 9 microns for the posterior capsular bag section and 10 to 20 microns for the anterior capsular bag section.

In a method of removing the natural lens, the opening in the anterior capsular bag can be made by means of a laser cutting device. This method of making the opening in the capsular bag is also referred to as capsulotomy. This laser-assisted method allows extremely accurate positioning and shape of the opening in the capsular bag. Further, after the removal of the natural lens, it is possible to subsequently make an opening in the rear part of the capsular bag, the rear opening. These two openings can be aligned exactly. The shape of the openings may be tuned to a shape of a circumference of the IOL, or more specifically, about a perimeter of the optical structure of the IOL. Thus, the IOL can fit perfectly in the opening. Finally, the openings can be perfectly matched to an optical axis of the eye. Furthermore, when an optical axis of the IOL is aligned in a predetermined position within the periphery of the IOL, the optical structure of the IOL can be optimally positioned in the eye. In this way, the optics of the optical structure can be aligned in a predetermined manner in the eye. For example, optical axes may be aligned, but another predetermined configuration may be possible, for example taking into account the quality of parts of the retina.

The support surfaces may be limited areas of the front and rear supports, respectively, which receive the capsular bag surface. In one embodiment, at least one front support includes a rear side that substantially fully receives the front surface of the front capsular bag portion. In one embodiment, a rear support includes a front side that substantially fully receives the rear surface of the front capsular bag portion.

• – eine optische Struktur;
• – mindestens zwei hintere Stützen, die dazu bestimmt sind, wenn die IOL in den Kapselsack implantiert ist, sich im Kapselsack zu befinden und sich von der genannten optischen Struktur hinwegzuerstrecken, wobei die genannten hinteren Stützen so beschaffen sind, dass sie im Einsatz Stützflächen für die Aufnahme einer hinteren Fläche einer vorderen Kapselsacklasche bieten, und
• – mindestens zwei vordere Stützen, die dazu bestimmt, wenn die IOL in den Kapselsack implantiert ist, sich außerhalb des Kapselsacks zu befinden und sich von der genannten optischen Struktur hinwegzuerstrecken, wobei die genannten vorderen Stützen so ausgestaltet sind, dass sie im Einsatz Stützflächen für die Aufnahme einer vorderen Fläche einer vorderen Kapselsacklasche bieten, wobei eine hintere Ebene, die definiert wird von den Stützflächen der hinteren Stützen, und eine vordere Ebene, die definiert wird von den Stützflächen der vorderen Stützen, so beschaffen sind, dass sie im Einsatz in einem Abstand voneinander angeordnet sind, der dazu ausgestaltet ist, zwischen ihnen eine vordere Kapselsacklasche zu halten, um die IOL in der genannten Öffnung festzuhalten.

The invention further relates to an intraocular lens structure (IOL) for implantation in the capsular bag which holds the IOL in an opening in a front part of a capsular bag, with a front capsular bag strap surrounding said opening, said IOL having a front side which in the Insert, when the IOL is implanted in an eye, directed towards a cornea of the eye, and a posterior side, which is in use, when the IOL is implanted in an eye, directed to a retina of the eye, said IOL includes:

• An optical structure;
• At least two rear supports intended, when the IOL is implanted in the capsular bag, to be in the capsular bag and to extend away from said optical structure, said rear supports being adapted to provide support surfaces for use in the capsule bag Provide a posterior surface of a front capsular bag tab, and
• - At least two front supports, which are intended when the IOL in the capsular bag implanted to be located outside the capsular bag and extending away from said optical structure, said anterior supports being configured to provide support surfaces for receiving a front surface of an anterior capsular bag strap in use, wherein a posterior plane defines is formed by the support surfaces of the rear pillars, and a front plane defined by the support surfaces of the front pillars are arranged to be spaced apart from each other in the insert, which is adapted to hold therebetween a front capsular bag tab to hold the IOL in said opening.

In one embodiment, the IOL is formed as one part. In one embodiment, the IOL is made from a polymeric material. In one embodiment, the IOL is foldable. The polymer material makes it possible to roll the IOL into a roll smaller than 2.5 mm in diameter. In order for the front capsular bag part to be clamped, at least the front supports are elastic, whereby the IOL can be inserted into the capsular bag and then the front supports are guided through the opening in the front capsular bag part and can be engaged with the front surface thereof. This actually makes it possible to hold the IOL in place.

In one embodiment, the at least two rear pillars extending from said optical structure are arranged in a functionally opposite direction from each other. In one embodiment, the at least two front pillars extending from said optical structure are arranged in a functionally opposite direction from each other.

In one embodiment, the front plane and said back plane, particularly in use, when clamping the capsular bag, are 5-100 microns apart. In particular, said back and front planes are 5-70 microns apart, more specifically 5-50 microns.

When the support surfaces are approximately parallel, this removal allows pinching of the anterior capsular bag tab.

The rear supports, or at least their support surfaces, may be angled toward the front of the IOL. In this way, after implantation, the posterior supports may press into the capsular bag against the posterior surface of the capsular bag tab. The rear supports can be at an angle of up to 10 °.

Alternatively or in combination, the forward supports, or at least their support surfaces, may be angled toward the rear of the IOL. In this way, after implantation, the anterior supports may press into the capsular bag against the anterior surface of the capsular bag tab. The front supports can be at an angle of up to 10 °.

In one embodiment, the rear supports and the front supports are offset from each other in the perimetric direction or in the azimuthal direction. This allows for easier production, in particular through the use of tooling or molding technology.

In one embodiment, the rear supports and the said front supports extend in the perimetric direction or in the azimuthal direction over the optical structure. Thus, a good support of the capsular bag flap can be realized, and even a fixation of the IOL.

In one embodiment, the rear pillars and the front pillars do not overlap. In fact, viewed from the front side, if the front and rear supports do not overlap, machining can be simplified. Furthermore, it may even be possible to allow a smaller distance between the front and rear planes. In fact, the support surface of the front support can be offset to -70 microns past the support surface of the rear support. In particular, when the back support and the front support are resilient, the back support and the front support may pinch the capsular bag tab therebetween and thereby fix the IOL in the opening. If the pillars do not overlap, the distance between the front and back planes may be between -70 and 100 microns, more preferably between -70 microns and 70 microns. The negative values indicate that, when not in use, the front support may be further in the rearward direction, past the rear support. However, in use, when holding the capsular bag, the front support will be on the front side of the front capsular bag portion, while the rear support will be on the rear side of the front portion of the capsular bag.

In one embodiment, the IOL includes a perimetric surface surrounding said optical structure and said rear support, said front support extending from said perimetric surface. In particular, the said perimetric area describes a radial surface intended to receive, when implanted, a perimetric edge of the anterior capsular bag tab defining the diameter of the opening.

This can allow alignment of the IOL. For example, if the opening is not circular, for example elliptical, and the circumference of the IOL matches the shape of the opening, the azimuthal orientation of the IOL may be fixed. In this way, specific optical structures can be aligned.

In one embodiment, at least a selected one of said rear pillars and front pillars is a haptic. In particular, the feel has an outer diameter of 8-12 mm.

It has been found that the IOL thereby fits into the capsular bag. This can serve as a stopgap if alignment with the opening fails.

In one embodiment, the IOL is formed in one piece with its thickness and flexibility configured to insert the IOL into the eye in a folded manner by micro-implantation.

In one embodiment, the IOL further includes an at least partially peripheral groove behind the rear pillars. In particular, said rearward groove opens in the radial direction to receive at least one edge of a posterior capsule bag flap surrounding a posterior opening in a posterior portion of the capsular bag when said IOL is implanted in an eye. In one embodiment, the rear groove is between 0.1 and 0.3 mm deep. In particular, said rear groove is between 0.05-0.2 mm wide. In particular, the rear groove is conical.

• – der Bildung einer Öffnung innerhalb des vorderen Teils eines Kapselsacks eines Auges, wobei die Öffnung ein Profil hat, das zum Umfang der IOL passt, wobei die genannte Öffnung von einer vorderen Kapselsacklasche umgeben wird, die zurückbleibt, nachdem die genannte Öffnung gebildet wurde,
• – der Implantation der IOL im Auge, wobei die hinteren Stützen sich in den genannten Kapselsack erstrecken, und
• – der Herausnahme der vorderen Stützen aus dem Kapselsack, wobei die vorderen Stützenflächen auf der vorderen Fläche des zurückbleibenden vorderen Teils des Kapselsacks, der die genannte Öffnung umgibt, ruht, während die hinteren Stützen im Kapselsack belassen werden und der verbleibende Teil des vorderen Teils des Kapselsacks, der die Öffnung umgibt, positioniert ist zwischen den hinteren und vorderen Stützen, wodurch die IOL in der Öffnung des vorderen Teils des Kapselsacks festgehalten wird.

The invention further relates to a method for fixing the above-described intraocular structure (IOL) in an eye, the IOL having a circumference approximately of an optical structure, the method consisting of:

• The formation of an opening within the anterior portion of a capsular bag of an eye, the opening having a profile which fits the periphery of the IOL, said opening being surrounded by a front capsular bag tab remaining after said opening is formed,
• The implantation of the IOL in the eye, the posterior supports extending into said capsular bag, and
• Removing the front supports from the capsular bag, the front support surfaces resting on the front surface of the remaining front portion of the capsular bag surrounding said opening while leaving the rear supports in the capsular bag and the remaining portion of the front portion of the capsular bag , which surrounds the opening, is positioned between the rear and front supports, thereby holding the IOL in the opening of the front part of the capsular bag.

In one embodiment of the method, the aperture is aligned with an axis of the eye and / or with the optical structure of the IOL. If the optical structure is a lens, often an optical axis of that lens is aligned.

In one embodiment of the method, the aperture is aligned with an axis and / or an azimuthal axis of the eye and an optical and / or azimuthal axis of the optical structure of the IOL.

In one embodiment of the method, the opening is circular with a center aligned with an axis of the eye and / or the optical structure has an optical axis aligned with the periphery of the IOL.

In one embodiment of the method, the circumference is circular.

• – die Bildung einer hinteren Öffnung im hinteren Teil des Kapselsacks, wobei die genannte hintere Öffnung, die von einer hinteren Kapselsacklasche umgeben wird, nach der Bildung der genannten hinteren Öffnung zurückbleibt;
• – Drücken der IOL, wenn diese in der Öffnung im vorderen Teil des Kapselsacks festgehalten wird, nach hinten in eine Richtung einer Netzhaut des Auges, bis ein innerer Umfang der hinteren Kapselsacklasche, der die hintere Öffnung definiert, eine hintere Rille in der IOL umgibt, welche die optische Struktur zumindest teilweise hinter den hinteren Stützen umgibt, was das Festhalten bewirkt. Dadurch wird die hintere Kapselsacklasche befestigt an der IOL, hinter den hinteren Stützen.

In one embodiment of the method, the capsular bag further includes a rear portion, said method further comprising:

• The formation of a rear opening in the rear part of the capsular bag, said rear opening, which is surrounded by a rear bag of capsule, remaining after the formation of said rear opening;
• Pressing the IOL, when held in the opening in the front part of the capsular bag, backwards in a direction of a retina of the eye until an inner circumference of the rear capsular bag tab defining the rear opening surrounds a rear groove in the IOL; which at least partially surrounds the optical structure behind the rear supports, which causes the holding. This secures the rear capsular bag tab to the IOL, behind the rear pillars.

The term "substantially" as used herein, for example, "substantially opposite" or "consisting essentially of," will be understood by those skilled in the art. The term "substantially" may also extend to embodiments of "whole", "complete", "all", etc. Thus, the term "substantially" in embodiments may also be omitted. Optionally, the term "substantially" may also refer to 90% or higher, such as. 95% or higher, in particular 99% or more, more particularly 99.5% or more, up to 100%. The term "comprising" also extends to embodiments in which the term "comprising" means "consisting of".

The term "functional" used herein, such as. B. in "functionally opposite", is understood by the skilled person. It extends, for example, to exactly opposite, but also to deviations from the exact positioning, as long as the feature functionally behave during operation or functionally acts as if it were, for example, substantially opposite. The term "functional" may therefore also extend to embodiments with "whole", "complete", "all", etc. Thus, the term "functional" in embodiments may also be omitted. Optionally, the term "functional" may also refer to 90% or higher, such as. B. 95% or higher, in particular 99% or more, more preferably 99.5% or more, up to 100%.

Moreover, the terms 'first', 'second', 'third' and similar terms in the description and claims are used to distinguish between similar elements, and not necessarily to describe a sequential or temporal order. It is to be understood that the terms used in this manner are interchangeable under appropriate conditions, and that the embodiments of the invention described herein are operable in other than those described and illustrated herein.

The devices or devices described herein are described inter alia during operation. As will be apparent to those skilled in the art, the invention is not limited to working methods or devices in operation.

It should be understood that the above-mentioned embodiments are not intended to limit the invention but to illustrate it, and that those skilled in the art will be able to devise numerous alternative embodiments without departing from the scope of the appended claims. In the claims, any reference numbers placed in parentheses may not be construed as limiting the claim. The use of the word "include" and its declinations does not exclude the presence of elements or steps other than those specified in a claim. If an article precedes the article "on", this does not exclude the presence of several such elements.

The mere fact that certain measures are mentioned in different sub-claims does not imply that a combination of these measures could not be applied favorably. In fact, many of the features of the present IOL can be combined to further enhance ease of implantation or fixation.

The invention further relates to a device or device comprising one or more of the characterizing features described in the specification and / or shown in the attached drawings. The invention further relates to a method or process comprising one or more of the characterizing features described in the specification and / or shown in the attached drawings.

The various aspects discussed in this patent can be combined to provide additional benefits. In addition, some of the characteristics may form the basis for one or more divisional applications.

Brief description of the drawings

Embodiments of the invention will now be described by way of example only, with reference to the accompanying diagrammatic drawings, in which like numerals indicate corresponding parts, and in which:

the and schematically represent a cross section through an eye before and after the removal of the natural lens, and a front view of ;

schematically illustrates an embodiment of an IOL in front view;

shows an embodiment of in lateral view;

shows a detail of as stated;

shows the embodiment of in perspective view, showing the front side;

schematically forms a back side of the IOL of off, with an alternative trailing feature;

shows a cross section of the IOL of with the trailing feature of ;

shows a cross section of the IOL of with the alternative rear feature;

shows a detail of as stated;

shows a detail of as stated;

shows still another embodiment of an IOL in front view;

shows an eyeball with an IOL;

shows a detail of as stated with the IOL of ;

shows a detail of as stated, but with an IOL with an alternative posterior trait and an intact posterior capsular bag, and

an eye from above, showing the eye axes.

The drawings are not necessarily to scale.

Description of the Preferred Embodiments

In this description, first the relevant parts of the eye in the and described. In the - Some special designs of an intraocular lens structure (IOL) and their position in one eye ( - ), and a method for implanting such an IOL in an eye.

The eye

In the and is schematically a cross section through an eyeball 20 displayed. In has the eyeball 20 a cornea 21 , Iris 25 , Pupil 26 and capsular bag 22 with a natural lens 31 , The capsular bag 22 has a front part 23 and a back part 24 , In becomes the eyeball 20 shown after the natural lens 31 was removed, after which the empty capsular bag 22 remains behind with an opening 32 , which usually has a circular or elliptical shape. The opening 32 is in the front part 23 of the capsular bag 22 , In many cases, the center of opening is 32 on an axis of the eye. The axes are in Are defined. shows a part of the eyeball in front view and shows the iris 25 , the front part 23 of the capsular bag with the opening 32 and the edge of the opening 52 , This edge 52 is also called 'perimetric edge' 52 designated.

Some patients may be the back part 24 of the capsular bag 22 not clear anymore. In such cases, in addition, an opening in the rear part 24 or in the capsule bag 22 manufactured, which is referred to as the rear opening.

In the previous section, the adjectives 'front (er)' and 'behind (er)' are used. As already explained, the terms "forward" and "rearward" refer to an arrangement of features related to the propagation of the light into the eye. Thus, light enters the cornea and iris, which are anterior parts of the eye, and it propagates to the retina located in the back of the eye. Thus, for example, the capsular bag 22 a front part 23 and a back part 24 , The anterior part again has an area that goes to the cornea 21 and the iris 25 is aligned. This surface is called the front surface of the front part 23 of the capsular bag 22 designated. The opposite surface, on the inside of capsular bag 22 , thus becomes the back surface of the front part 23 of the capsular bag 22 designated.

The intraocular lens structure (IOL)

Next, some embodiments of the intraocular lens structure (IOL) will be described. schematically illustrates an embodiment of an intraocular lens structure (IOL) in front view. The front side is the side of the IOL 1 leading to the cornea 21 is oriented towards when the IOL mentioned 1 is implanted in an eye. The side of the IOL 1 , which is directed toward the retina after the IOL has been implanted into an eye, is referred to here as the posterior aspect of IOL 1 designated. If a natural lens 31 must be removed from an eye, usually an opening 32 in the front part 23 from capsule bag 22 produced. Subsequently, the natural lens 31 away. In specific cases, such as in pediatric patients, there may also be a posterior opening in the posterior part 24 of the capsular bag 22 produced, the part of the capsular bag 22 that between the natural lens 31 and the retina is located. The opening 32 and the rear opening are normally aligned. The openings are often circular, but other shapes are also possible, certainly with the use of laser-assisted capsulotomy. Usually, the openings are aligned with an optical axis of the eye, but other positions may be used. Around the openings remains a ring of capsular bag fabric or membrane. This ring is also referred to as a capsular bag flap. This ring or tab has a border 52 that adjoins the perimeter of the opening 32 or in fact the opening 32 Are defined. The opening 32 has a radial direction and extends from the center of the opening 32 outward to its extent 52 ,

The IOL 1 includes an optical structure 2 , The optical structure 2 is in many cases a lens, in fact a front lens and a rear lens. In embodiments such as in embodiment shown has the optical structure 2 a front surface of the lens structure 3 and a rear surface of the lens structure 4 , s. , The optical structure may further be provided with any type of optical structure known for IOLs. Furthermore, in this description, the constitution of the optical structure is not intended to be limited. The optical structure may include a lens or cap. In one embodiment, both the front and rear sides are provided with a curved surface to provide one or more lenses. Examples of lens optics are a monofocal lens, an astigmatic lens, a multifocal lens, an accommodative lens or a bifocal sector lens, which are described in, for example, US Pat PCT / NL2012 / 050115 were disclosed. The optics can be refractive, light-diffractive or a combined form of both forms. Further or in combination, the optical structure may comprise an optical filter and / or a functional layer known to a person skilled in the art. The optical structure may comprise active and / or passive elements. An example of an active element is z. B. a liquid crystal optics.

An IOL 1 is usually essentially a flat structure. Its thickness is about 0.1-1 mm. The diameter of IOL 1 is usually about 7-12 mm. The optical structure usually has a diameter of between 4-7 mm. In most embodiments, the optical structure has a diameter of 5-7 mm.

In such a mainly flat structure, an axial direction Ax, which may have a rear and a front direction, can be distinguished. Furthermore, a radial direction Ra can be distinguished. Finally, it is possible to distinguish an azimuthal direction Az, which may have a clockwise or anti-clockwise direction. When the optical structure is a simple monofocal lens, the axial direction is the optical axis, and the radial direction is the radial direction of the lens. In the and these are specified. In the case of other optical structures, the axial, radial and azimuthal directions will be apparent to one skilled in the art.

In one embodiment, the IOL 1 made of a polymer material. In particular, the IOL 1 from a polymer material that is foldable. In particular, the supports are elastic. The IOL 1 in one embodiment is made in one piece. In particular, the IOL 1 flexible, so that it can be rolled up into a small roll with a diameter smaller than 2.5 mm. In particular, this makes it possible to roll up the IOL to a diameter smaller than 1.8 mm. On the other hand, the IOL is dimensionally stable, in particular so flexible that it can be unfolded from its rolled-up state and returned to its original shape once inserted into the capsular bag.

The embodiment of will be further shown in detail in the - , in which the embodiment of in the side view shows a detail of as in indicated, and the embodiment of in a perspective view from the front shows.

The IOL includes a scope 7 of about the optical structure 2 , The scope 7 has a peripheral surface. The scope 7 may be designed to match the shape of the opening in the capsular bag. For example, if the opening is circular, the circumference may be circular. The size of the perimeter is such that it may be slightly oversized to slightly increase the size of the capsular bag opening or to match the size of the opening. In the embodiment of includes the optical structure 2 a curved surface that forms a lens. The lens in this embodiment is circular and has an optical axis. The peripheral surface extends parallel to the optical axis here. The circumference here forms a cylindrical surface. In the case of a circular circumference 7 is the peripheral surface circular cylindrical, and in the embodiment of even a straight circular cylinder. A non-circular shape of the opening and the circumference 7 can provide benefits to a rotation of the IOL 1 to prevent the optical axis. For example, the opening may be elliptical and the circumference 7 be elliptical, matching the elliptical shape of the opening. Alternatively, an alignment device, such as a cam, may be on the periphery 7 be attached and a matching device attached to the opening. The rotational fixation may be advantageous, for example, in the context of an astigmatism optic. In one embodiment, shown for example in FIG and , is the diameter of perimeter 7 greater than the circumference 10 the optical structure 2 , For example, scope may be 7 0.5-2 mm larger than the circumference 10 the optical structure 2 ,

The IOL 1 includes rear supports 5 . 5 ' , here on opposite sides of the optical structure 2 , The rear supports 5 . 5 ' extend away from the optical structure. In particular, the rear supports extend 5 . 5 ' away in the lateral direction relative to the optical structure 2 , The rear supports 5 . 5 ' have support surfaces 13 . 13 ' on, also referred to as the support surfaces of the rear supports 5 . 5 ' , These support surfaces 13 . 13 ' are located here in a plane called the back plane. In the specific embodiment of in which the circumference discussed above is cylindrical, the rear plane is perpendicular to the cylindrical surface of the circumference 7 ,

The rear supports 5 . 5 ' here form loops, with two ends on the circumference 7 are attached.

The optical structure 2 usually has a diameter of 4-7 mm. The scope 7 usually has a diameter of 4-7 mm. In the embodiments shown in the drawings, the front supports 6 . 6 ' and the rear supports 5 . 5 ' at the extent 7 attached.

If the IOL 1 implanted, take the support surfaces 13 . 13 ' the rear supports 5 . 5 ' the back surface of the front part 23 of the capsular bag 22 on. In one embodiment, the rear supports 5 . 5 ' and thus at least a part of the support surfaces are arranged at an angle of 0-10 degrees in the front direction. In one embodiment, when implanted, the surface of the circumference decreases 7 the edge 52 the opening in the anterior capsular bag is engaged or nearly engaged [] [this is extremely tough to translate]]], and the support surface 13 . 13 ' the rear supports 5 . 5 ' actually nestles against the posterior surface of the anterior capsular bag. For this purpose, the support surface 13 . 13 ' be carried out so that it holds the surface of the capsular bag. For example, cams or edges can be attached.

At least one of the surfaces of the rear supports can be roughened, for example sandblasted, to prevent light reflections.

The IOL 1 also includes the front supports 6 . 6 ' , The front supports 6 . 6 ' also extend sideways with respect to the optical structure 2 , The front supports form the support surfaces 14 . 14 ' the front supports 6 . 6 ' , If the IOL 1 is implanted, these are front supports 6 . 6 ' outside the capsule bag 22 , The support surfaces 14 . 14 ' are then designed and engineered to be when the IOL 1 implanted, pick up the anterior surface of the anterior part of the capsular bag. Again, these support surfaces are 14 . 14 ' in a plane called the front plane. In one embodiment, when implanted, the area of circumference decreases 7 the edge 52 the opening in the front capsular bag or almost takes it up, and the support surface 14 . 14 ' the front supports 5 . 5 ' can in fact be made to nestle against the anterior surface of the anterior capsular bag. Thus, both surfaces are in almost complete physical contact. For this purpose, the support surface 14 . 14 ' be carried out so that it holds the surface of the capsular bag. In order for the anterior supports to actually extend out of the capsular bag and to be able to nestle against the anterior surface of the anterior capsular bag, there are usually some manipulation steps of the person making the IOL 1 implanted, required.

The front plane is functionally parallel to the back plane. sideview shows this. In particular, these levels are parallel when using the capsular bag 22 between them. The distance between the rear support surfaces 14 . 14 ' the front supports 6 . 6 ' and the front support surfaces 13 . 13 ' the rear supports 5 . 5 ' is designed to fit the front part 23 of the capsular bag 22 between them. The front supports 6 . 6 ' and the rear supports 5 . 5 ' are positioned so that their support surfaces between them a distance 11 include. In fact, the distance between the posterior plane and / or the anterior plane is tuned to that of the anterior capsular bag flap 23 between hold to the IOL 1 in the opening when the IOL is implanted. In fact, the distance between the back plane and the front plane can be tuned to the thickness of the front part of the capsule bag. It was found that the rear supports 5 . 5 ' and the front supports 6 . 6 ' were able to hold the front capsular bag between them when the distance is between 5 and 100 microns. In particular, the distance of the back plane and the front plane from each other is 15-50 microns. The distance forms the distance 11 , If the distance is less than 20 microns, especially less than 10 microns, the tab is tightly clamped and avoids possible rotation of the lens.

In the embodiment of are the back supports 5 . 5 ' and the front supports 6 . 6 ' offset against each other. In fact, the rear pillars are seen from the front 5 . 5 ' and the front supports 6 . 6 ' do not cover up. This can also be referred to as the rear pillars 5 . 5 ' and the front supports 6 . 6 ' in the perimetric direction or in the azimuthal direction (Az, ) are offset. In this sense, 'offset' is used as, for example, in 'a staggered intersection'.

Especially if the rear supports 5 . 5 ' and the front supports 6 . 6 ' are offset, the rear plane and the front plane are parallel or substantially parallel when the front part of the capsular bag is held between them.

In the embodiment of are the back supports 5 . 5 ' from IOL 1 closed loops. In the embodiment of have the back supports 5 . 5 ' from IOL 1 one Diameter of about 8-12 mm, in particular 7-12 mm, and a thickness of 0.15-0.4 mm, in particular 0.2-0.4 mm, more particularly 0.20-0.35 mm, and especially from 0.25 to 0.35 mm.

Alternatively, the ends of the loops can also be removed, whereby the rear supports 5 . 5 ' in each case be transformed into two rear supports, resulting in four rear supports 5 . 5 ' leads. The radially extending rear supports or loop supports may in fact serve as a protective measure when implanting the IOL 1 in the opening 32 for some reason fails.

The thickness of the front supports 6 . 6 ' may be between 0.04 and 0.25 mm, in particular from 0.04 to 0.20 mm, more particularly from 0.05 to 0.20 mm, and especially from 0.05 to 0.10 mm.

In the embodiment of assigns the IOL 1 at or near the perimeter 7 at least one space extending in the perimetric or azimuthal direction 19 between a rear support 5 . 5 ' and a front pillar 6 . 6 ' on. This space facilitates manufacturing and also makes it easier to use the front support 6 . 6 ' through the opening 32 through and out of the capsular bag as it provides the space for insertion of an instrument when inserting and positioning the IOL 1 offers. In the embodiment of is located at each transition from the front pillars 6 . 6 ' to the rear supports 5 . 5 ' an azimuthal space 19 ,

It was found that to support the posterior side of the anterior part of the capsular bag, the posterior supports 5 . 5 ' extend at least about 0.5 mm in the radial direction from the circumference. In particular, the rear supports extend 5 . 5 ' at least 1.0 mm in the radial direction.

It has been found that at least one of the front supports supports the front side of the front part of the capsular bag 6 . 6 ' extends at least about 0.3 mm in the radial direction from the circumference. In particular, the front supports extend 6 . 6 ' at least 0.4 mm, more particularly at least 0.5 mm, in the radial direction.

In the embodiment of the IOL 1 from has the IOL 1 additional front supports 8th . 8th' , These anterior supports are referred to herein as anterior lips 8th . 8th' , These extend in use outside of the capsular bag 22 , They complement the other front supports 6 . 6 ' and cause an additional pinching of the front capsular bag part 23 , The front lips 8th . 8th' have back surfaces 17 . 17 ' against the outside of the capsular bag 22 rest, against the anterior surface of the anterior capsular bag section 23 , The front lips 8th . 8th' extend here approximately 0.1-2 mm in the circumferential direction (or azimuthal direction). The front lips 8th . 8th' extend in the radial direction, ie away from the optical structure 2 and the scope 7 , about 0.1-1.3 mm, in particular about 0.4-1.0 mm, especially 0.4-0.6 mm. In this embodiment, the front lips extend 8th . 8th' about 0.3 mm.

In becomes an embodiment of an IOL 1 shown in the front pillars 6 . 6 ' have a different shape. In this embodiment, the front supports 6 . 6 ' with a support opening 18 . 18 ' Mistake. Through these support openings 18 . 18 ' an instrument can be introduced, the front supports 6 . 6 ' through the opening 32 in the capsular bag after inserting the IOL into the capsular bag. The front supports 6 . 6 ' thus protrude out of the capsular bag The diameter of the support hole 18 . 18 ' may be 0.2-1.5 mm, in particular 0.2-1.0 mm.

In the and , two different embodiments of posterior features that affect the posterior portion of the capsular bag are visible.

In the . and , respectively, a perspective view of the rear side, a cross section and a detail of the cross section of As indicated, the back side is the IOL 1 at and near the perimeter with a sharp edge 16 provided to prevent the growth of tissue from the posterior capsular bag portion. Such tissue growth can cause turbidity of the posterior capsule.

In the . . and an alternative embodiment of the rear features is shown. show a side view, shows a detail as indicated, shows a cross-sectional view of the IOL of and shows a detail as indicated in ,

The IOL of this embodiment has a rear circumferential groove 12 which extends behind the rear supports 5 . 5 ' and the front supports 6 . 6 ' , In fact, the rear groove 12 here formed behind the rear surface 15 . 15 ' the rear supports 5 . 5 ' , The rear groove 12 is designed to receive and hold the edge surrounding the rear opening, ie the opening in the rear capsule bag. As explained, such a posterior opening can be made by performing a second capsulotomy on the posterior part 24 of the capsular bag 22 is performed. The edge surrounding the rear opening becomes the rear groove 12 pushed after the IOL 1 into position in the opening in the front capsular bag part. For this purpose, the IOL can be gentle pushed backwards until the edge or the edge of the rear opening into the rear groove 12 slides. The rear groove 12 here has a depth of 0.1-0.3 mm. The rear groove 12 is shaped to receive the edge surrounding a rear opening. At the rear groove 12 it can be a rectangular groove. Here it is wedge-shaped. It has walls at an angle of between 10 and 60 degrees, especially about 30-60 degrees, especially 40-50 degrees. This rear groove 12 closes the rear opening, preventing clouding of the capsule.

The eye-positioned IOL

shows in a cross-sectional view an eyeball with an IOL 1 , in the inserted position inside in the capsular bag 22 , The eyeball 20 has a cornea 21 , an iris 25 with a pupil 26 and the capsular bag 22 ,

• 1. Die Sehachse 51, die durch den festen Objektpunkt und den Knotenpunkt N des Auges verläuft. Wenn die Funktion der Knotenpunkte berücksichtigt wird, verläuft der Strahl, der die Sehachse 51 verkörpert, durch die Fovea 48 zur Netzhaut.
• 2. Die optische Achse 47, die senkrecht zur Hornhaut-Oberfläche verläuft und die Iris 25 und Pupille 26 im Mittelpunt durchläuft. Da die Fovea 48 nicht zentral zum Augapfel 20 angeordnet ist, unterscheidet sich die optische Achse 47 von der Sehachse 51. Die optische Achse 51 ist die geometrische Symmetrieachse des Augapfelsystems und unterscheidet sich von dem optischen zentralen Strahl, der den Mittelpunkt der Fovea erreicht und schräg durch das Augensystem hindurchtritt.
• 3. Die Sichtlinie 50 ist die Achse, die durch den Objektpunkt und den Mittelpunkt der Eintrittspupille 26 verläuft. Dies ist der Strahl, der durch den Schwerpunkt des Lichtbündels hindurchtritt und bei dem es sich um die Achse des Strahlenbündels handelt, der in das Auge 20 eintritt. Normalerweise liegt der Winkel zwischen der Sichtlinie und der optischen Achse 47 im Bereich von 3° bis 8°. Der Mittelpunkt der Eintrittspupille 26 wird aufgrund der asymmetrischen Bilderzeugung durch das Hornhautsystem und die außeraxiale Position der Fovea zur nasalen Seite versetzt.
• 4. Die Pupillenachse 49, die durch den Mittelpunkt der Eintrittspupille 26 verläuft und senkrecht zur Vorderfläche der Hornhaut steht.

In , which shows a cross section through the eye from above (N = nasal, T = temporal), will be different axes of the eye 20 Are defined:

• 1. The visual axis 51 passing through the fixed object point and the node N of the eye. When the function of the nodes is taken into account, the ray passing the visual axis passes 51 embodied by the fovea 48 to the retina.
• 2. The optical axis 47 that runs perpendicular to the corneal surface and the iris 25 and pupil 26 goes through in the middle point. Because the fovea 48 not central to the eyeball 20 is arranged, the optical axis is different 47 from the visual axis 51 , The optical axis 51 is the geometric axis of symmetry of the eyeball system and differs from the optical central ray, which reaches the center of the fovea and passes obliquely through the eye system.
• 3. The line of sight 50 is the axis passing through the object point and the center of the entrance pupil 26 runs. This is the beam passing through the center of gravity of the light beam, which is the axis of the beam entering the eye 20 entry. Normally, the angle is between the line of sight and the optical axis 47 in the range of 3 ° to 8 °. The center of the entrance pupil 26 is displaced to the nasal side due to asymmetric imaging by the corneal system and the off-axis position of the fovea.
• 4. The pupil axis 49 passing through the center of the entrance pupil 26 runs and is perpendicular to the front surface of the cornea.

The field of view for the monocular view extends to the entire retina, without the small part of the blind spot. Usually, people tend to turn the eye to the most favorable position in which the image in the fovea 48 is produced. When the eye 20 is moved in this way to a position of optimal orientation, so that the image is at the center of the fovea, the optical system of the eye is not used as a centered system. However, the tilt is small and the spherical aberration and astigmatism are the predominant aberrations of the eye.

In becomes a detail of shown, with the IOL 1 from is used. The IOL 1 In this example, it is equipped with the rear groove already described 12 ,

Here is the posterior capsular bag 24 the already explained rear opening. The edge of the rear opening is positioned in the rear groove 12 , The front capsular bag tab (a ring of capsular bag membrane material) that remains after an opening in the anterior capsular bag portion 23 is maintained between the front support 6 and the rear support 5 , The support surface of the front support 6 and the support surface of the rear support 5 both of them are resting on the front capsule flap and, in fact, although perhaps not shown in this way, may even pin the flap between them.

In will have a similar detail to that of shown, but with an IOL 1 with an alternative trailing feature. In this case, the rear capsule bag part has 24 no opening: the rear capsular bag part 24 is intact and lies on the back surface 4 the IOL 1 on.

In both and have the back supports 5 . 5 ' a big diameter. The IOL 1 but is positioned in opening 32 with the help of the front and rear supports, if necessary, precisely with circumference 7 and the length of the perimeter of the opening 32 , Thus, the radial dimension of the rear supports 5 . 5 ' be reduced.

Insert the IOL into an eye

Below is the insertion of the previously described IOL 1 explained. An example of a method of making the incision and implanting the IOL is described as such, for example US5376115 which is included by this reference as if fully set forth. In particular, this describes:
One surgical technique that has gained in popularity is the phacoemulsification technique, which uses ultrasonic vibrations to fragment the lens nucleus, thereby allowing the lens material to be removed through an approximately 3 mm incision. The benefits of a small incision are faster visual acuity, faster healing, and less astigmatism than traditional, large incisions. A titanium Hollow needle with a diameter of approximately 1 mm is excited by a magnetostrictive ultrasonic mechanism for vibration. The mechanical vibration converts the lens into an emulsion, which explains the term phacoemulsification.

As the phacoemulsification technique has been refined, the design of the incision has been developed to allow healing of the wound without the need for suturing - "self-healing incisions". According to the reference, the technique is described, for. In J Cataract Refract Surg 16 (5): 567-577 (1990) from Menapace, R. et al, and in Ophthalmology (US) 100 (2) (1993), pp. 159-163 from Ormerod, LD et al.

US 5376115 further describes an example of establishing an IOL.

This can be combined with the following method. Before inserting the IOL 1 An opening in the front part of the capsular bag is first made in the capsular bag. With the help of z. As a laser device such as the femtolaser, an opening or aperture can be made in the front membrane or front capsule of the capsular bag, which has a precise shape and a precise position. This method is also referred to as 'capsular hexis', although recent literature refers to a laser-based method as 'capsulotomy' and uses this term in contrast to 'capsular hexis', which term is then used to refer to a mechanical tearing or cutting of an opening in the To refer to capsular bag. Currently, other laser-based methods are also developing. In these methods, a laser beam is directed through the cornea and into the eye, where its energy is absorbed in an internal structure to cut that structure. In one of these methods, the anterior capsular bag membrane is stained with a light-absorbing agent. The absorption properties of this light absorbing agent are selected so as to absorb the energy of the laser beam.

In many cases, for example in a cataract, in a next step, the clouded natural lens is removed through the opening in the capsular bag. In this step, the natural lens may first be laser treated before it is removed, for example with a phacoemulsification device. The removal of the natural lens as such is known to those skilled in the art.

In an optional next step, a posterior opening can be made in the posterior portion of the capsular bag, in the posterior or posterior capsule of the capsular bag.

An example of such a classical Kapsularhexis method and the use of a laser device in such a method is described in US8409182 which is included by this reference as if fully set forth herein. For example, column 3 describes an example of the steps in a Kapsularhexis method, or more specifically, a capsulotomy procedure. The laser-based method enables exact positioning and shaping of the opening. In addition, such a method can be a relatively strong edge 52 leave around the created opening in the capsular bag around. In particular, the following has been found with respect to a laser-based method.

METHODS: Capsulotomies performed by an OCT-guided femtosecond laser (OCT - optical coherence tomography) in eyes of pigs and human cadavers were subsequently performed in 39 patients in a prospective, randomized study of femtosecond laser-assisted cataract surgery. The accuracy of size, shape and centering of the capsulotomy was quantified and the capsulotomy thickness was assessed on the pig's eye.

RESULTS: Lasered capsulotomies were significantly more accurate in size and shape than hand-made capsulorhexes. For the patient's eyes, the deviation from the intended diameter of the resected capsule disc was 29 μm ± 26 (SD) in the laser technique and 337 ± 258 μm in the manual technique. The mean deviation from the circular shape was 6% and 20%, respectively. The midpoint of the laser capsulotomy was within 77 ± 47 μm from the intended position. All capsulotomies were complete, with no radial nicks or cracks. The severity of laser capsulotomies (pig subgroup) decreased with increasing pulse energy: 152 ± 21 mN at 3 mJ, 121 ± 16 mN at 6 mJ and 113 ± 23 mN at 10 mJ. The strength of the manual capsulorhexen was 65 ± 21 mN.

CONCLUSION: The femtosecond laser produced capsulotomies that were more accurate, precise, reproducible, and stronger than those made using conventional manual techniques.

Source: J. Cataract Refract. Surg. 2011; 37: 1189-1198 Q 2011 , ASCRS and ESCRS.

Tests continue to show the following results.

METHODS: Ten fresh porcine eyes were randomized to femtosecond laser-assisted capsulotomy or manual capsulotomy. The capsule was immersed in hyaluronic acid and retractors were attached to the capsule opening with a tensile force gauge. The force required to break the capsulotomy was measured in millinewtons (mN); In addition, the maximum aspect ratio was evaluated.

RESULTS: The observed mean fracture limit (i.e., the maximum amount of force measured immediately before tissue rupture) was 113 mN ± 12 (SD) laser guided and 73 ± 22 mN manual (P <0.05). The stretch ratios were 1.60 ± 0.10 (femtosecond) and 1.35 ± 0.04 (manual) (P <0.05).

CONCLUSION: In this laboratory study on pig eyes, the femtosecond laser-assisted capsulotomy resulted in significantly greater anterior capsule opening than the manual capsulotomy performed by the standard procedure.

Source: J. Cataract Refract. Surg. 2013; 39: 105-109 Q 2013 , ASCRS and ESCRS.

A very accurate positioning of an opening 32 in a capsule bag 22 and a very accurate shape of the opening 32 allow accurate positioning and alignment of the described IOL 1 and are particularly advantageous when the current IOL or IOL / S-IOL combination is used.

The IOL 1 can be used in the following way. Often the IOL 1 inserted through a micro-incision into the eye in the capsular bag. Via an insertion instrument, the IOL is rolled up outside the eye and advanced through a nozzle that passes through the incision in the eye. The rolled up IOL 1 enters the capsular bag through the opening. The rolled up IOL 1 unfolds within the capsular bag.

Next are the front pillars 6 . 6 ' manipulated with the help of a small tool so that they fold back through the opening 32 in the front capsular bag part 23 , causing them to fall outside the capsular bag 22 extend. With the help of the same or an identical tool, the lips 8th . 8th' be manipulated so that they are also through the opening 32 extend through and out of the capsular bag 22 hinauserstrecken. The back surfaces 17 and 17 ' the lips 8th . 8th' then lie on the front surface of the front part 23 of the capsular bag 22 on. If the posterior capsule is also open, then in a second act, gently pushing the IOL slightly down, the posterior tab in the posterior groove 12 attached.

It will also be understood that the above description and drawings have been included to illustrate some embodiments of the invention, and not to limit the scope of protection. Starting from this disclosure, many other embodiments will be apparent to one skilled in the art. These embodiments are within the scope and spirit of the invention and are obvious combinations of prior art techniques and the disclosure of this patent.

LIST OF REFERENCE NUMBERS

1

 Intraocular lens structure (IOL)

2

 Optical structure

3

 Front surface of the IOL

4

 Rear surface of the IOL

5, 5 '

 Rear supports

6, 6 '

 Front supports

7

 Scope of the IOL

8, 8 '

 Additional front lips

9

 Outer perimeter of the optical structure

10

 Scope of the optical structure

11

 Distance between the rear level and the front level

12

 Rear groove for the posterior capsular flap

13, 13 '

 Support surfaces of the rear support

14, 14 '

 Support surfaces of the front support

15 15 '

 Rear surfaces of the rear support

16

 Back edge

17, 17 '

 Areas of additional front lips

18, 18 '

 Holes in the front support

19

 Azimuthal distance between posterior and anterior supports

20

 eyeball

21

 cornea

22

 capsular bag

23

 Front part of the capsular bag

24

 Back part of the capsular bag

25

 iris

26

 pupil

31

 Natural lens

32

 Opening (in the front part of the capsular bag)

47

 Optical axis

48

 fovea

49

 Pupillarachse

50

 line of sight

51

 visual axis

52

 Peripheral edge of the anterior capsular bag flap

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 6027531 [0004]
• US 6881225 [0005]
• US 5171320 [0006]
• NL 2012/050115 [0071]
• US 5376115 [0105, 0107]
• US 8409182 [0111]

Cited non-patent literature

• J Cataract Refract Surg 16 (5) (1990), pp. 567-577 [0106]
• Menapace, R. et al, and in Ophthalmology (US) 100 (2) (1993), pp. 159-163 [0106]
• J. Cataract Refract. Surg. 2011; 37: 1189-1198 Q 2011 [0115]
• J. Cataract Refract. Surg. 2013; 39: 105-109 Q 2013 [0120]

Claims (17)

An intraocular lens structure (IOL) ( 1 ) for implantation in the capsular bag and for securing the IOL in an opening in a front part of a capsular bag, with a front capsular bag strap surrounding said opening, said IOL having a front in use when the IOL in the capsular bag ( 22 ) has been implanted in the direction of a cornea of the eye, and a posterior side which in use, when the IOL is implanted in an eye, is oriented in the direction of a retina of the eye, said IOL ( 1 ) comprises: an optical structure ( 2 ), which have a scope ( 7 ) having; - at least two rear supports ( 5 . 5 ' ), which are of the same scope ( 7 ) of said optical structure ( 2 ) and extending therefrom, said rear supports ( 5 . 5 ' ) are designed so that they in use support surfaces ( 13 . 13 ' ) for receiving a posterior surface of a front capsular bag tab, said posterior supports ( 5 . 5 ' ) in the capsular bag ( 22 ), if the IOL ( 1 ) in the capsular bag ( 22 ), and - at least two front supports ( 6 . 6 ' ), which are of the same scope ( 7 ) of said optical structure ( 2 ) and extending therefrom, which are intended to be located outside the capsular bag and move away from said optical structure ( 2 ), said front supports ( 6 . 6 ' ) are designed so that they in use support surfaces ( 14 . 14 ' ) for receiving a front surface of a front capsular bag tab, wherein a rear plane defined by the support surfaces ( 13 . 13 ' ) of the rear supports ( 5 . 5 ' ), and a front plane which is defined by the support surfaces ( 14 . 14 ' ) of the front supports ( 6 . 6 ' ) are configured, in use, to be spaced from each other at a distance adapted to hold between them a front bag of sac to hold the IOL ( 1 ) in said opening ( 32 ). The IOL ( 1 ) according to claim 1, wherein when the IOL ( 1 ) in the capsular bag ( 22 ), the anterior supports ( 6 . 6 ' ) and the rear supports ( 5 . 5 ' ) are arranged on each other on the said circumference so that they between them a front capsular bag flap ( 23 ) hold for fixing the IOL ( 1 ) in said opening ( 32 ) in a front part of a capsular bag. The IOL of claim 1 or 2, wherein said at least two back pillars extend from said optical structure in a functionally opposite direction, and said at least two front pillars extend from said optical structure in a functionally opposite direction , The IOL of claim 1, 2 or 3, wherein said front plane and said back plane are 5-70 microns apart, in particular, wherein said front and back planes are 5-50 microns apart. The IOL according to any one of the preceding claims, wherein said rear pillars and said front pillars are circumferentially or azimuthally offset from each other. The IOL of any one of the preceding claims, wherein said rear pillars and said front pillars extend circumferentially or in azimuthally across the optical structure. The IOL of any one of the preceding claims, wherein the rear supports and the front supports do not overlap, especially not functionally cover. The IOL of any one of the preceding claims, wherein said IOL ( 1 ) a peripheral surface ( 7 ) comprising said optical structure ( 2 ), said rear supports ( 5 . 5 ' ) and said front supports ( 6 . 6 ' ) extending from said peripheral surface ( 7 ), wherein said peripheral surface ( 7 ) defines a radial surface which, when said IOL is implanted, defines a peripheral edge ( 52 ) of the anterior capsular bag flap, which is the circumference ( 52 ) of the opening ( 32 ) Are defined. The IOL of any one of the preceding claims, wherein said front supports ( 6 . 6 ' ) Through-holes or openings ( 18 . 18 ' ). The IOL of any one of the preceding claims, wherein - said at least two back supports ( 5 . 5 ' ) comprise closed loops extending from said optical structure ( 2 ), with both ends of each loop on the said circumference ( 7 ), and - said at least two front supports ( 6 . 6 ' ) are each positioned within one of said loops between said ends. The IOL according to any one of the preceding claims, wherein said rear supports ( 5 . 5 ' ) and said front supports ( 6 . 6 ' ) of the IOL ( 1 ) are offset or staggered relative to one another in the azimuthal direction (Az). The IOL of any one of the preceding claims, wherein said IOL is formed in one piece with its thickness and flexibility designed to implant the IOL into the eye in a folded fashion by micro-implantation. The IOL according to any of the preceding claims, further comprising an at least partially perimetric groove behind the posterior supports, in particular wherein said posterior groove opens in the radial direction to at least one edge of one when said IOL is implanted in an eye rear capsule bag tab surrounding a rear opening in a rear portion of the capsular bag. The IOL of claim 13, wherein said rear groove is between 0.1 and 0.3 mm deep, and in particular said rear groove is between 0.05-0.2 mm wide, and more particularly said rear groove is conical , The IOL ( 1 ) according to any one of the preceding claims, wherein said support surfaces ( 14 . 14 ' ) are offset or staggered relative to one another in the azimuthal direction (Az), in particular in each case in the azimuthal direction (Az) a support surface (Az) 14 . 14 ' ) and a front support surface ( 13 . 13 ' ). The IOL according to any one of the preceding claims, wherein said rear supports ( 5 . 5 ' ) and said front supports ( 6 . 6 ' ) the IOL ( 1 ) in the azimuthal direction (Az)? the optical structure ( 2 ). An intraocular lens structure (IOL) for implantation in the capsular bag, comprising: - an optical structure ( 2 ), which have a scope ( 7 ) having; - at least two rear supports ( 5 . 5 ' ), which are of the same scope ( 7 ) of said optical structure ( 2 ) and extending therefrom, destined to be in the capsular bag ( 22 ), when the IOL ( 1 ) in the capsular bag ( 22 ), and - at least two front supports ( 6 . 6 ' ), which are of the same scope ( 7 ) of said optical structure ( 2 ) and extending therefrom, intended to extend outside the capsular bag ( 22 ), when the IOL ( 1 ) in the capsular bag ( 22 ) is implanted, wherein the front supports ( 6 . 6 ' ) and the rear supports ( 5 . 5 ') are positioned on the said circumference to each other so that they have a front capsular bag flap ( 23 ) between them and so the optical structure of the IOL ( 1 ), aligned with an opening ( 32 ) in a front part of the capsular bag ( 22 ).

Images