Amniotic membrane mirror

Abstract

The utility model relates to an amniotic membrane mirror which comprises an amniotic membrane area, a transition area and a landing area. In an overlook view angle, the transition area surrounds the amnion area, and the landing area surrounds the transition area; a plurality of through holes are formed in the edge of the amnion area in the circumferential direction of the amnion area, a plurality of connecting parts are arranged on the inner edge of the top of the transition area in the circumferential direction of the transition area, and the through holes are connected to the connecting parts in a one-to-one correspondence mode; the transition area is connected to the landing area; the amniotic membrane area, the transition area and the landing area are coaxially arranged so that the amniotic membrane area can be coaxial with the optical axis of the pupil after being worn, the amniotic membrane area can be located above the cornea, the transition area can be located above the cornea sclera edge, and the landing area can be supported on the sclera. The utility model has the beneficial effects that the safety of the cornea sclera edge can be ensured, and meanwhile, the landing area can be prevented from contacting and stimulating the cornea, so that the wearing comfort is improved. And the three areas are mutually independent, thereby facilitating processing and mass production.

Description

Technical Field

[0001] This utility model relates to the field of medical contact lens technology, and in particular to an amniotic lens. Background Technology

[0002] The amnion is the innermost layer of the placenta, containing substances necessary for the growth of conjunctival cells and corneal epithelial cells. Its surface is smooth, and it contains no blood vessels, nerves, or lymphatics. It possesses a certain degree of elasticity and is approximately 0.02–0.5 mm thick. It is composed of the epithelial layer, basement membrane, compact layer, fibroblast layer, and spongy layer. The amnion's structure is similar to that of the human conjunctiva, containing ocular surface epithelial cells, including substances necessary for the growth of conjunctival and corneal epithelial cells. It plays a role in promoting epithelial repair, inhibiting scar formation, suppressing corneal neovascularization, and inhibiting immune responses. Therefore, the amnion has been widely used in the treatment of ocular surface diseases.

[0003] Currently, CN112155845A discloses a conformal amniotic lens, including a ring-shaped conformal part, on which the amniotic membrane is fixed. The lower surface of the conformal part is attached to the ocular surface, and the conformal part moves in sync with the eyeball when it is attached to the ocular surface. Compared with the prior art, this invention allows the amniotic lens to fit snugly against the ocular surface and move in sync with the eyeball during prolonged wear, ensuring that the amniotic membrane on the lens remains in the treatment position. This solves the problem of the amniotic lens shifting due to its inability to move in sync with the eyeball in previous designs. Structurally, the amniotic membrane is fixed to the conformal part, and the lower surface of the conformal part adheres to the sclera. However, due to the shapes of the cornea, limbus, and sclera, it does not perfectly fit the shape of the ocular surface, resulting in a less than ideal wearing experience. Utility Model Content

[0004] (1) Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an amniotic membrane lens, which solves the technical problem that the prior art does not fully adapt to the shape of the ocular surface, resulting in a poor wearing experience.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0008] This invention provides an amniotic lens, comprising an amniotic region, a transition region, and a landing region. From a top-view perspective, the transition region surrounds the amniotic region, and the landing region surrounds the transition region. The edge of the amniotic region has multiple through-holes along its circumference, and the inner top edge of the transition region has multiple connecting portions along its circumference. The multiple through-holes are connected to the multiple connecting portions in a one-to-one correspondence. The transition region is connected to the landing region. The amniotic region, the transition region, and the landing region are coaxially arranged so that they can be coaxial with the optical axis of the pupil after wearing. The amniotic region can be located above the cornea, the transition region can be located above the limbus, and the landing region can be supported by the sclera.

[0009] Optionally, the connecting part includes an integrally formed connecting area and a limiting area; the connecting area is located at the top of the transition area, and the limiting area is located at the top of the connecting area; the connecting area passes through the through hole, and the cross-sectional dimension of the limiting area is larger than the dimension of the through hole.

[0010] Optionally, the amniotic region is spherical and its vertical projection is circular, the transition region is aspherical and its vertical projection is annular, and the landing region is spherical and its vertical projection is annular.

[0011] Optionally, the diameter of the vertical projection of the amniotic region is 4–11 mm; the outer diameter of the vertical projection of the transition region is 10–13 mm; and the outer diameter of the vertical projection of the landing region is 13–17 mm.

[0012] Optionally, the landing area supported on the side of the sclera has a lubricating layer.

[0013] Optionally, the transition zone can form a cavity with the limbus to accommodate tears.

[0014] Optionally, the height of the cavity is 100–250 μm.

[0015] Optionally, the transition zone and the landing zone are made of an oxygen-permeable material.

[0016] Optionally, the connecting part is made of a transparent material.

[0017] (3) Beneficial effects

[0018] The beneficial effects of the utility model are:

[0019] This invention provides an amniotic membrane lens, which, when worn, treats the eye by placing the amniotic membrane area above the cornea and the landing area against the sclera to form stable support. The transition area connecting the landing area is located above the limbus, ensuring the safety of the limbus and preventing the landing area from contacting and irritating the cornea, thus improving wearing comfort and making it suitable for people with corneal diseases. Furthermore, the amniotic membrane area is connected to the inner edge of the transition area via a through-hole, resulting in a more stable mechanical connection and preventing the amniotic membrane area from falling off. The design, with its independent amniotic membrane area, transition area, and landing area, facilitates mass production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the amnioscope in a specific embodiment of the present invention;

[0021] Figure 2 This is a top view schematic diagram of the amnioscope in a specific embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the amnioscopic lens during wear in a specific embodiment of the present invention;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0024] [Explanation of Labels in the Attached Image]

[0025] 1: Amniotic region; 2: Transitional region; 3: Landing region; 4: Connecting part; 41: Connecting region; 42: Limiting region; 5: Cornea; 6: Limb of the cornea and sclera; 7: Sclera. Detailed Implementation

[0026] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0027] like Figure 1-Figure 3As shown, this embodiment provides an amniotic lens, including an amniotic region 1, a transition region 2, and a landing region 3. From a top-view perspective, the transition region 2 surrounds the amniotic region 1, and the landing region 3 surrounds the transition region 2. Multiple through-holes are formed along the circumference of the edge of the amniotic region 1, and multiple connecting portions 4 are formed along the circumference of the top inner edge of the transition region 2. The multiple through-holes are connected to the multiple connecting portions 4 in a one-to-one correspondence. The transition region 2 is connected to the landing region 3. The amniotic region 1, transition region 2, and landing region 3 are coaxially arranged so that they can be coaxial with the optical axis of the pupil after wearing. The amniotic region 1 can be located above the cornea 5, the transition region 2 can be located above the limbus 6, and the landing region 3 can be supported by the sclera 7. In this specific embodiment, the connecting portions 4 are made of transparent material to avoid affecting the user experience. The transition zone 2 and landing zone 3 are made of ultra-permeable material. Preferably, the transition zone 2 and landing zone 3 are made of Boston XO2 material with an oxygen permeability coefficient DK value of 141, achieving ultra-high oxygen permeability while ensuring good elastic modulus, hardness and wettability of the material.

[0028] Specifically, after wearing, the amniotic membrane area 1 is positioned above the cornea 5 to treat the eye, while the landing area 3 adheres to the sclera 7, forming a stable support. The transition area 2, connecting the landing area 3, is located above the limbus 6, ensuring the safety of the limbus 6 and preventing the landing area 3 from contacting and irritating the cornea 5, thereby improving wearing comfort and making it suitable for people with corneal 5 conditions. Furthermore, the amniotic membrane area 1 is connected to the connecting part 4 at the top inner edge of the transition area 2 through a through-hole on its edge, resulting in a more stable mechanical connection and preventing the amniotic membrane area 1 from easily falling off. The design, with the amniotic membrane area 1, transition area 2, and landing area 3 being independent of each other, facilitates mass production.

[0029] Furthermore, such as Figure 1-Figure 4 As shown, the connecting part 4 includes an integrally formed connecting area 41 and a limiting area 42; the connecting area 41 is located at the top of the transition area 2, and the limiting area 42 is located at the top of the connecting area 41; the connecting area 41 passes through the through hole, and the cross-sectional dimension of the limiting area 42 is larger than the dimension of the through hole. The limiting area 42 limits the amniotic membrane area 1, thereby achieving a mechanical connection between the amniotic membrane area 1 and the transition area 2.

[0030] Furthermore, such as Figure 2 As shown, the amniotic region 1 is spherical with a circular vertical projection, the transition region 2 is aspherical with a ring-shaped vertical projection, and the landing region 3 is spherical with a ring-shaped vertical projection. The diameter of the vertical projection of the amniotic region 1 is 4–11 mm; the outer diameter of the vertical projection of the transition region 2 is 10–13 mm; and the outer diameter of the vertical projection of the landing region 3 is 13–17 mm, making it suitable for most people.

[0031] Furthermore, such as Figure 3As shown, the transition zone 2 can be joined with the limbus 6 to form a cavity for containing tears. Because the cornea and conjunctiva of the eyeball have different shapes, the cavity allows the amniotic lens to fit the eyeball more closely. Specifically, the height of the cavity is 100–250 μm.

[0032] Furthermore, in this specific embodiment, the landing area 3 has a lubricating layer on the side of the sclera 7, which improves the fit between the landing area 3 and the sclera 7 and increases the stability of the landing area 3 support.

[0033] When the amniotic lens provided in this specific embodiment is worn by the user, the lubricating layer of the landing area 3 adheres to the user's sclera 7, the landing area 3 is supported on the user's sclera 7, the transition area 2 is located above the user's limbus 6, the amniotic area 1 is located above the user's cornea 5, the amniotic area 1, the transition area 2 and the landing area 3 are coaxial with the optical axis of the user's pupil, and a cavity is formed between the transition area 2 and the limbus 6, so that the amniotic lens can fit the user's eyeball more closely and improve the user's wearing experience.

[0034] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An amnioscope, characterized in that, It includes the amniotic region (1), the transition region (2), and the landing region (3); From a top-down perspective, the transition zone (2) surrounds the amniotic membrane region (1), and the landing zone (3) surrounds the transition zone (2); The amniotic membrane region (1) has multiple through holes along its circumference at its edge, and the transition region (2) has multiple connecting parts (4) along its circumference at its top inner edge, with the multiple through holes connected to the multiple connecting parts (4) in a one-to-one correspondence; the transition region (2) is connected to the landing region (3); The amniotic region (1), the transition region (2) and the landing region (3) are coaxially arranged so that they can be coaxial with the optical axis of the pupil after wearing. The amniotic region (1) can be located above the cornea (5), the transition region (2) can be located above the limbus (6), and the landing region (3) can be supported by the sclera (7).

2. The amnioscope as described in claim 1, characterized in that, The connecting part (4) includes an integrally formed connecting area (41) and a limiting area (42); The connecting area (41) is located at the top of the transition area (2), and the limiting area (42) is located at the top of the connecting area (41); the connecting area (41) passes through the through hole, and the cross-sectional dimension of the limiting area (42) is larger than the dimension of the through hole.

3. The amnioscope as described in claim 1, characterized in that, The amniotic region (1) is spherical and its vertical projection is circular, the transition region (2) is aspherical and its vertical projection is annular, and the landing region (3) is spherical and its vertical projection is annular.

4. The amnioscope as described in claim 3, characterized in that, The diameter of the vertical projection of the amniotic region (1) is 4 to 11 mm; The outer diameter of the vertical projection of the transition zone (2) is 10-13 mm; The outer diameter of the vertical projection of the landing area (3) is 13-17 mm.

5. The amnioscope as described in claim 1, characterized in that, The landing area (3) supported on the side of the sclera (7) has a lubricating layer.

6. The amnioscope as described in claim 1, characterized in that, The transition zone (2) can form a cavity with the limbus (6) to accommodate tears.

7. The amnioscope as described in claim 6, characterized in that, The height of the cavity is 100–250 μm.

8. The amnioscope as described in claim 1, characterized in that, The transition zone (2) and the landing zone (3) are made of ultra-permeable oxygen material.

9. The amnioscope as described in claim 1, characterized in that, The connecting part (4) is made of transparent material.

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