Accommodative intraocular lens

Abstract

IOL of the type which include a lens, haptics and a curving ring wherein there are soft haptics and rigid haptics, both being associated through a lever and wherein a softer outer ring houses in its inner geometry an inner curving ring, the latter being rigid and incomplete, with curving flaps in whose geometry the assembly consisting of lens and haptics is housed.

Claims

1. An accommodative intraocular lens, comprising: a first group including an optical part (1); a soft haptic (14) including an insertion channel and a protrusion, wherein the optical part and the soft haptic are integral; and a rigid haptic (5) including a lever (8) and a thickening portion, wherein the lever is disposed within the insertion channel; and a second group including a rigid incomplete inner curving ring (9) including a curving flap (10), wherein the curving flap includes a clipping hole; and a soft outer ring (11) including a groove and an angled flap, wherein the incomplete inner curving ring is disposed within the groove; wherein the first group is connected to the second group when the thickening portion is lodged in the clipping hole and the protrusion is lodged in the angled flap; and wherein the outer ring and the incomplete inner curving ring are configured to allow changes in a curvature and a thickness of the lens when accommodating and to remain stable when not accommodating.

2. The accommodative intraocular lens of claim 1, wherein the soft haptic (14) includes a centering hole (4).

3. The accommodative intraocular lens of claim 1, wherein the soft haptic (14) extends radially from a perimeter of the optical part (1).

4. The accommodative intraocular lens of claim 1, wherein the soft haptic includes at least two soft haptics.

5. The accommodative intraocular lens of claim 1, wherein the soft haptic is disposed at an angle of 5 to 180 relative to a horizontal axis (19) of the lens.

6. The accommodative intraocular lens of claim 1, further comprising an equal number of the soft haptic and the rigid haptic.

7. The accommodative intraocular lens of claim 1, wherein the thickening portion (7) and the lever (8) are disposed at opposite ends of the rigid haptic.

8. The accommodative intraocular lens of claim 1, wherein the rigid haptic includes a centering hole.

9. The accommodative intraocular lens of claim 1, wherein the thickening portion (7) and the lever (8) are disposed on opposite sides of the rigid haptic.

10. The accommodative intraocular of claim 1, wherein the groove includes an opening oriented to an inside of the outer ring.

11. The accommodative intraocular lens of claim 1, wherein the angled flap (13) includes a pair of angled flaps and the protrusion includes a pair of protrusions.

12. The accommodative intraocular lens of claim 11, wherein the pair of angled flaps (13) each include a centering hole (16).

13. The accommodative intraocular lens of claim 11, wherein each of the protrusions (18) is configured to fasten to one of the pair of angled flaps.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) FIG. 1 is an exploded view of the various elements of the IOL and thus we find:

(2) Optical part (1)

(3) Soft haptic part (2) which comprises the soft haptics (14).

(4) Insertion channel (3)

(5) Centering hole of the soft haptics (4)

(6) Protrusion (18)

(7) Rigid haptics (5)

(8) Centering hole of the rigid haptics (6)

(9) Thickening (7)

(10) Lever (8)

(11) Incomplete inner ring (9)

(12) Curving flaps (10) with clipping hole (15).

(13) Outer ring (11)

(14) Grooved body (12)

(15) Angled flaps (13) with centering hole (16)

(16) FIG. 2 shows in detail the front (14) and the reverse side (15) of the rigid haptic, the reverse side been taken as the side that will face the soft haptic, this figure showing the lever (8) and the thickening (7) cited in FIG. 1.

(17) FIG. 3 shows the front of the lens and soft haptics (16) as well as the reverse side of the lens and soft haptic (17), highlighting protrusions (18) existing on the reverse side (17) at the end of the soft haptics (14), this figure also showing the optical part (1), the insertion channels (3) and the centering holes of the soft haptics (4).

(18) FIG. 4 shows the mounted lens and the outer ring (11) which houses the incomplete inner ring (9) sticking out, the rigid haptics (5) with their centering holes for the rigid haptics (6), the optical part (1) and the haptic part (2).

(19) FIG. 5 shows a sectional view of half of the lens.

(20) This figure shows the outer ring (11) with the angled flaps (13) with centering hole (16), the incomplete inner ring (9), the rigid haptics (5), their lever (8), the thickening (7) inserted in the clipping hole (15) of the curving flap (10) and the centering hole of the rigid haptics (6). Also shown is the horizontal axis (19) of the lens in respect of which the haptics present some degree of angulation.

DESCRIPTION OF AN EMBODIMENT OF THE INVENTION

(21) An embodiment of the invention will now be described, this not being the only embodiment possible nor limiting the scope of the invention, but merely explanatory, while the invention encompasses any form of implementation that comprises the claimed technical solutions.

(22) The invention relates to an accommodating IOL for its insertion into the capsular bag following the extraction of the crystalline lens that comprises:

(23) Optical part (1)

(24) Soft haptic part (2) which comprises the soft haptics (14).

(25) Insertion channel (3)

(26) Centering hole of the soft haptics (4)

(27) Protrusion (18)

(28) Rigid haptics (5)

(29) Centering hole of the rigid haptics (6)

(30) Thickening (7)

(31) Lever (8)

(32) Incomplete inner ring (9)

(33) Curving flaps (10) with clipping hole (15).

(34) Outer ring (11)

(35) Grooved body (12)

(36) Angled flaps (13) with centering hole (16)

(37) The optical part (1) and the soft haptic part (2), comprising the soft haptics (14), are made in a single piece and of an elastically deformable material, the optical part having a similar refractive index to that of any lens of intraocular use.

(38) The soft haptic part (2) comprises four soft haptics (14) extending radially from the perimeter of the optical part as extensions.

(39) Each of these soft haptics comprises a insertion channel (3), a centering hole of the soft haptic (4) and a protrusion

(40) The protrusion (18) of the soft haptics (14) in lodging into the angled flaps (13) contributes to fix the assembly of lens and soft and rigid haptics to the outer ring (11) and serves as a stop to improve the curving of the lens when there is a postero-anterior displacement of the optical part of the lens.

(41) Associated with these soft haptics (14) the rigid haptics (5) are provided, these being understood as a series of haptics whose resistance to elastic deformation is greater than that of the soft haptics.

(42) Each one of these rigid haptics (5) comprises at the end of its reverse side a lever (8) having suitable geometry to be inserted in the insertion channel (3) of the soft haptics and thus the soft haptics become associated to the rigid haptics.

(43) The rigid haptics (5) also comprise a thickening (7) at the end opposite to the lever (8), this thickening being suitable to be lodged in the clipping hole (15) of the curving flaps (10) of the inner ring (9).

(44) Thus an assembly is configured that comprises an optical part (1), soft haptics (14), and rigid haptics (5).

(45) The assembly described in the preceding paragraph is associated with another group or assembly comprising a rigid inner ring (9) with curving flaps (10), that is housed in the grooved body (12) of a soft outer ring (11).

(46) The connection and attachment points between the assemblies are the thickenings (7) lodged into the clipping holes (15) and the protrusions (18) lodged in the angled flaps (13) of the outer ring.

(47) This outer ring comprises a series of angled flaps (13) distributed in the same way as the curving flaps (10) of the inner ring (9).

(48) These flaps are double arranged in pairs, a upper one and a lower one, wherein in each pair, at least one of them presents a centering hole.

(49) In accordance with the foregoing, the accommodating lens is provided in two groups of independent elements, yet integral relative to each other.

(50) On the one hand the assembly formed by the lens with its soft and rigid haptics, on the other the assembly consisting of the inner ring and the outer ring.

(51) This provides a better implantation inside the capsular bag since the assembly consisting of the inner ring and outer ring, and then the assembly consisting of the optical part, soft haptics and rigid haptics are inserted separately, and through a simple mechanism of rotation the two assemblies are integrally joined to form a stable assembly but with a large displacement and curving capacity. Also the proper position can be checked by the positioning holes of the haptics and angled flaps.