Soft contact lenses

Abstract

The present invention discloses a soft contact lens, which includes a lens body, a microporous structure and an anti-blocking structure. The lens body includes an optical zone and a non-optical zone, wherein the optical zone covers the visual area of ​​the pupil of the eye, and the non-optical zone surrounds the optical zone and is arranged concentrically with the optical zone; the microporous structure runs through the non-optical zone to prevent corneal hypoxia; the anti-blocking structure can be detachably connected to the microporous structure to intercept foreign matter from the outside. The microporous structure of the technical solution of the present invention can allow external oxygen to enter the cornea smoothly, reduce the incidence of corneal complications caused by insufficient corneal oxygen supply, and prevent the entry of foreign matter through the anti-blocking structure, further ensuring the normal use of the soft contact lens.

Description

Technical Field

[0001] The present invention relates to the technical field of soft contact lenses, in particular to a soft contact lens. Background Art

[0002] Traditional soft corneal contact lenses are soft material lenses that are worn on the cornea of ​​myopic patients to correct vision.

[0003] The cornea is a bloodless tissue, and oxygen supply from the atmosphere is essential to maintain the metabolic activity of corneal cells. Therefore, after long-term wearing, due to the poor permeability of soft contact lenses, the cornea can easily absorb less oxygen, which can easily cause corneal damage, conjunctival congestion, edema and other inflammations. Summary of the invention

[0004] The main purpose of the present invention is to propose a soft contact lens, which aims to allow external oxygen to enter the cornea smoothly by setting a microporous structure, reduce the incidence of corneal complications caused by insufficient corneal oxygen supply, and prevent the entry of foreign matter through an anti-blocking structure, thereby further ensuring the normal use of the soft contact lens.

[0005] To achieve the above object, the soft contact lens proposed by the present invention comprises:

[0006] A lens body, the lens body comprising an optical zone and a non-optical zone, the optical zone covers the visual area of ​​the pupil of the eye, and the non-optical zone surrounds the optical zone and is concentrically arranged with the optical zone;

[0007] A microporous structure, wherein the microporous structure runs through the non-optical area and is used to prevent corneal hypoxia;

[0008] The anti-blocking structure is detachably connected to the microporous structure to intercept foreign matter from the outside.

[0009] In an optional embodiment, a plurality of the microporous structures are provided, and the plurality of the microporous structures are arranged at intervals in the non-optical area; a plurality of the anti-blocking structures are provided, and one of the anti-blocking structures is detachably connected to one of the microporous structures.

[0010] In an optional embodiment, the lens body further comprises a convex surface and a concave surface opposite to each other, the concave surface is used to cover the contact cornea, and the convex surface is arranged on a side away from the cornea;

[0011] The microporous structure forms an air guiding cavity, and the air guiding cavity is connected to the convex surface and the concave surface;

[0012] The anti-blocking structure is detachably connected to the inner wall of the air guiding cavity and is close to one side of the convex surface, and the outer convex surface of the anti-blocking structure is lower than the convex surface.

[0013] In an optional embodiment, the anti-blocking structure is a hollow cylinder with a dome surface, and the anti-blocking structure includes a pleated portion and an air inlet hole provided on the dome surface, and a plurality of the pleated portions are provided, and the plurality of the pleated portions are arranged at intervals on the dome surface;

[0014] A plurality of air inlet holes are provided, and the plurality of air inlet holes are arranged at intervals on the dome surface and are located between adjacent fold parts.

[0015] In an optional embodiment, the pleated portion includes a plurality of pleats having peaks and roots connected in sequence, and an interception space for intercepting foreign matter is formed between adjacent pleats.

[0016] In an optional embodiment, the anti-blocking structure is further formed with an air inlet cavity, the air inlet hole is connected to the air inlet cavity, and the air inlet cavity is connected to the air guide cavity on a side away from the air inlet hole.

[0017] In an optional embodiment, a first baffle is provided in the cavity wall of the air inlet cavity, the first baffle is provided below the air inlet hole, and a second baffle is provided in the cavity wall of the air guide cavity, the first baffle and the second baffle are staggered with each other so that there is a gap between the first baffle and the second baffle in the up and down directions.

[0018] In an optional embodiment, the first baffle is arranged to be gradually inclined downward from the root to the tip;

[0019] And / or, the second baffle is arranged to be gradually inclined downward from the root to the tip.

[0020] In an optional embodiment, the soft contact lens further comprises a peripheral zone, the peripheral zone surrounds the non-optical zone, and the peripheral zone comprises an edge front surface, an edge rear surface, and an edge fillet surface connected to the edge front surface and the edge rear surface;

[0021] The soft contact lens further comprises a water permeable hole, which is arranged in the peripheral area and penetrates through the edge front surface and the edge rear surface, so that tear liquid can be discharged through the water permeable hole.

[0022] In an optional embodiment, a plurality of water-permeable holes are provided, and the plurality of water-permeable holes are arranged at intervals in a circular array shape.

[0023] The soft contact lens of the technical solution of the present invention comprises a lens body, a microporous structure and an anti-blocking structure. The lens body comprises an optical zone and a non-optical zone. The optical zone covers the visual area of ​​the pupil of the eye, and the non-optical zone surrounds the optical zone and is arranged concentrically with the optical zone. The microporous structure runs through the non-optical zone to prevent corneal hypoxia. The anti-blocking structure can be detachably connected to the microporous structure to intercept foreign matter. By setting the microporous structure, external oxygen can smoothly enter the cornea, so that the wearer feels comfortable, and the incidence of corneal complications caused by insufficient corneal oxygen supply is reduced. The anti-blocking structure prevents the entry of foreign matter, further ensuring the normal use of the soft contact lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of the soft contact lens of the present invention;

[0026] Figure 2 for Figure 1 The schematic diagram of the structure along the AA line in the soft contact lens shown;

[0027] Figure 3 for Figure 2 A top view of the anti-blocking structure in the soft contact lens shown;

[0028] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0029] Figure 5 for Figure 2 Enlarged view of point C in the middle.

[0030] Description of Figure Numbers:

[0031] Label name Label name 10 Soft contact lenses 2 Microporous structure 1 Lens body 21 Air guide cavity 11 optical zone 22 Second stopper 12 non-optical zone 3 Anti-blocking structure 13 Convex 31 Folded part 14 Concave 311 Wrinkles 15 Surrounding Area 312 Intercept space 151 Edge front surface 32 Air Inlet 152 Edge rear surface 33 Intake cavity 153 Edge fillet face 34 First stopper 154 Water hole

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The present invention provides a soft contact lens, which aims to allow external oxygen to enter the cornea by setting a microporous structure, so as to make the wearer feel comfortable and reduce the incidence of corneal complications caused by insufficient corneal oxygen supply.

[0038] Please refer to Figures 1 to 5, the specific structure of the soft contact lens proposed in the present invention will be described in a specific embodiment. In one embodiment of the present invention, the soft contact lens 10 includes a lens body 1, a microporous structure 2 and an anti-blocking structure 3. The lens body 1 includes an optical zone 11 and a non-optical zone 12. The optical zone 11 covers the visual area of ​​the pupil of the eye, and the non-optical zone 12 surrounds the optical zone 11 and is concentrically arranged with the optical zone 11; the microporous structure 2 runs through the non-optical zone 12 to prevent corneal hypoxia; the anti-blocking structure 3 is detachably connected to the microporous structure 2 to intercept foreign matter from the outside. By setting the microporous structure 2, oxygen from the outside can enter the cornea, so that the wearer feels comfortable, and the incidence of corneal complications caused by insufficient corneal oxygen supply is reduced. The anti-blocking structure prevents the entry of foreign matter such as insects and foreign matter, reduces bacterial infection, and further ensures the normal use of the soft contact lens.

[0039] As we know, soft contact lenses are used to fit on the cornea to correct vision or protect the eyes. Its main components are the optical zone and the non-optical zone. The optical zone covers the visual area of ​​the pupil of the eye, so the external light enters the pupil through the optical zone, and the non-optical zone surrounds the optical zone. Among them, soft contact lenses can be made of soft high molecular polymer materials, and the inner surface morphology of the lens is designed to match the front surface of the cornea to the maximum extent, so the lens has no shaping effect on the cornea. When wearing the lens, the lens plays a corrective role in myopia. After taking off the lens, the corneal morphology remains unchanged, and the wearing eye immediately returns to its original myopia state.

[0040] Specifically, in order to make the soft contact lens 10 have high oxygen permeability, a microporous structure 2 is provided on the non-optical area 12. Such a setting will not affect the transparency of the soft contact lens 10, and the microporous structure 2 runs through the lens body 1, thereby making the lens body 1 have good permeability, which can effectively prevent corneal hypoxia. At the same time, in order to prevent foreign matter from entering the cornea through the microporous structure 2, an anti-blocking structure 3 is provided in the microporous structure 2. The anti-blocking structure 3 can be used to prevent foreign matter from entering the cornea and prevent foreign matter from contaminating the cornea, thereby reducing corneal inflammation. In addition, the connection between the microporous structure 2 and the anti-blocking structure 3 is a detachable connection, so when the soft contact lens 10 is cleaned, the anti-blocking structure 3 can be taken out of the air guide cavity by tools, etc., which is not only simple in structure and easy to clean, but also reduces bacterial contamination.

[0041] It should be noted that the anti-blocking structure 3 is made of soft material so as to maintain the shape of the soft contact lens during use.

[0042] Please refer to Figures 1 to 3In an optional embodiment, a plurality of microporous structures 2 are provided, and the plurality of microporous structures 2 are arranged at intervals in the non-optical area. A plurality of anti-blocking structures 3 are provided, and each anti-blocking structure 3 is detachably connected to each microporous structure 2. By providing a plurality of microporous structures 2, the soft contact lens 10 can have high oxygen permeability and can effectively prevent corneal hypoxia.

[0043] Specifically, a plurality of microporous structures 2 are provided, and the microporous structures 2 are arranged at intervals in the non-optical area 12, so that air can enter the cornea through the plurality of microporous structures 2, and each anti-blocking structure 3 is detachably arranged in each microporous structure 2, which can ensure that air can smoothly enter the cornea, and also prevent foreign matter from entering the cornea, preventing foreign matter from contaminating the cornea, thereby reducing corneal inflammation.

[0044] Please refer to Figure 2 and Figure 4 In an optional embodiment, the lens body 1 also includes a convex surface 13 and a concave surface 14 relative to each other, the concave surface 14 is used to cover the contact cornea, and the convex surface 13 is arranged on the side away from the cornea; the microporous structure 2 forms an air guide cavity 21, and the air guide cavity 21 is connected to the convex surface 13 and the concave surface 14; the anti-blocking structure 3 is detachably connected to the inner wall of the air guide cavity 21, and is close to one side of the convex surface 13, and the outer convex surface of the anti-blocking structure 3 is lower than the convex surface 13, and the air guide cavity 21 is formed in the microporous structure 2, and is detachably connected to the inner wall of the air guide cavity 21 through the anti-blocking structure 2, and the outer convex surface of the anti-blocking structure 2 is lower than the convex surface 13 of the lens body 1, thereby achieving that the user does not have a foreign body sensation when wearing the lens, and does not affect the comfort when wearing, and at the same time can improve the oxygen permeability of the lens body 1.

[0045] Specifically, the microporous structure 2 has an air guide cavity 21, and the air guide cavity 21 is connected to the convex surface 13 and the concave surface 14 of the lens body 1, so that oxygen can enter the cornea through the air guide cavity 21, so that the cornea can be adequately supplied with oxygen, which can make the wearer feel comfortable and reduce the incidence of corneal complications caused by insufficient corneal oxygen supply. At the same time, the anti-blocking structure 3 is arranged in the air guide cavity 21, and the external oxygen can enter the air guide cavity 21 through the anti-blocking structure 3, while the external foreign matter cannot enter the air guide cavity 21 through the anti-blocking structure 3, which can effectively reduce bacterial infection and reduce the incidence of corneal complications.

[0046] It should be noted that the connection between the anti-blocking structure 3 and the microporous structure 2 is a detachable connection, which is convenient for the subsequent cleaning, disinfection and sterilization of the soft contact lens 10. The anti-blocking structure 3 and the microporous structure 2 can be detachably connected by respectively setting a positioning groove or a positioning protrusion on the inner wall of the air inlet cavity 33 and setting a positioning protrusion and a positioning groove on the outer wall of the air guide cavity, and the positioning protrusion is adapted to the positioning groove. Of course, it can also be a detachable connection in other ways, which is not limited here. And the convex surface refers to the surface away from the cornea of ​​the eyeball.

[0047] Please refer to Figure 3 and Figure 4 In an optional embodiment, the anti-blocking structure 3 is a hollow cylinder with a dome surface. The anti-blocking structure 3 includes a pleated portion 31 and an air inlet 32 ​​provided on the dome surface. The pleated portion 31 is provided with a plurality of pleated portions 31, which are arranged at intervals on the dome surface. The plurality of pleated portions 31 can effectively intercept foreign objects from the outside to ensure the normal use of the microporous structure 2. The air inlet 32 ​​is provided with a plurality of pleated portions 32, which are arranged at intervals on the dome surface and are located between adjacent pleated portions 31. The pleated portions 31 can prevent foreign objects from blocking the air inlet 32 ​​to ensure the normal use of the air inlet 32.

[0048] Specifically, the anti-blocking structure 3 is a hollow cylinder with a dome surface, and a folded portion 31 and an air inlet 32 ​​are arranged on the dome surface, and there are multiple folded portions 31, such as two or three, or more than three, and multiple folded portions 31 are arranged at intervals on the dome surface. By providing multiple folded portions 31, it can be in contact with the air to the greatest extent, thereby effectively intercepting foreign objects from the outside. In addition, the dome surface is lower than the convex surface of the lens body 1, thereby reducing the foreign body sensation when the patient wears the lens.

[0049] Similarly, in order to allow air to fully enter the microporous structure 2, a plurality of air inlet holes 32 are provided, and the plurality of air inlet holes 32 are spaced between adjacent pleated portions 31. Since the pleated portions 31 protrude above the dome surface, foreign matter from the outside is mostly intercepted by the pleated portions 31 first, thereby preventing large foreign matter from clogging the air inlet holes 32 and affecting the air intake of the air inlet holes 32.

[0050] It should be noted that the anti-blocking structure 3 can be an integrally formed structure, which can ensure structural strength and structural stability. Of course, it can also be a split connection structure, which is not limited here.

[0051] Please refer to Figure 3In an optional embodiment, the pleated portion 31 includes a plurality of pleats 311 connected in sequence, wherein the pleats 311 have peaks and roots, so that an interception space 312 for intercepting foreign matter is formed between adjacent pleats 311 , and most of the foreign matter can be intercepted in the interception holes 312 .

[0052] Specifically, a plurality of folds connected in sequence form an interception space, and each fold has a peak and a root, so that the interception space is V-shaped. Of course, the interception space may also be of other shapes, such as a wave shape.

[0053] Please refer to Figure 3 and Figure 4 In an optional embodiment, the anti-blocking structure 3 is further formed with an air inlet cavity 33, the air inlet hole 32 is connected to the air inlet cavity 33, and the air inlet cavity 33 is connected to the air guide cavity 21 on the side away from the air inlet hole 32. Oxygen passes through the air inlet hole 32 and the air inlet cavity 33 in turn and enters the air guide cavity 21. In this way, the outside air can smoothly enter the cornea, and the foreign matter from the outside is first intercepted by the anti-blocking structure 3 to prevent the foreign matter from being blocked in the air inlet hole 32.

[0054] Please refer to Figure 4 In an optional embodiment, a first baffle 34 is provided in the cavity wall of the air inlet cavity 33, and the first baffle 34 is provided below the air inlet hole 32. A second baffle 22 is provided in the cavity wall of the air guide cavity 21. The first baffle 34 and the second baffle 22 are staggered with each other so that there is a gap between the first baffle 34 and the second baffle 22 in the up and down directions. Foreign objects entering the air inlet cavity 33 and the air guide cavity 21 can be further intercepted by the first baffle 34 and the second baffle 22, and air can smoothly enter the air guide cavity 21 from the gap between the first baffle 34 and the second baffle 22.

[0055] Specifically, in order to further intercept foreign matter entering the air inlet cavity 33 or the air guide cavity 21, a first baffle 34 may be provided in the cavity wall of the air inlet cavity 33, and a second baffle 22 may be provided in the cavity wall of the air guide cavity 21. The first baffle 34 and the second baffle 22 are staggered with each other in the up and down directions and have a gap, so that the air entering the air inlet cavity 33 can enter the cornea through the first baffle 34 and the second baffle 22 in turn, thereby ensuring the normal passage of air.

[0056] Please refer to Figure 4 In an optional embodiment, the first baffle 34 is arranged to be gradually inclined downward from the root to the tip; the second baffle 22 is arranged to be gradually inclined downward from the root to the tip. Such an arrangement can ensure the structural strength of the first baffle 34 and the second baffle 22, and can ensure that the first baffle 34 and the second baffle 22 can effectively intercept foreign objects.

[0057] Please refer to Figure 2 and Figure 5In an optional embodiment, the soft contact lens 10 further includes a peripheral zone 15, wherein the peripheral zone 15 surrounds the non-optical zone 12, and the peripheral zone 15 includes an edge front surface 151, an edge rear surface 152, and an edge fillet surface 153 connected to the edge front surface 151 and the edge rear surface 152. By arranging the edge front surface 151, the edge rear surface 152, and the edge fillet surface 153 on the peripheral zone 15, the soft contact lens 10 can be stably installed on the cornea, thereby improving the adhesion of the soft contact lens 10 to the corneal surface. The soft contact lens 10 has the ability to reduce the deformation and damage of the cornea by setting the edge rounded surface 153, and the tears can be discharged from the edge rounded surface 153 of the peripheral zone 15; the soft contact lens 10 also includes a water permeable hole 154, which is arranged in the peripheral zone 15 and penetrates the edge front surface 151 and the edge rear surface 152, so that the tears can be discharged through the water permeable hole 154. Through the water permeable hole 154, not only can the tear exchange be accelerated, but also the oxygen supply to the cornea is enhanced and the comfort of the patient when wearing the glasses is improved.

[0058] Specifically, in order to further improve the flow and exchange of tears, an edge rounded surface 153 is connected between the edge front surface 151 and the edge rear surface 152. The edge rounded surface 153 can make the soft contact lens 10 better adhere to the cornea, and help reduce corneal deformation and avoid corneal damage, and help promote the flow and exchange of the thin layer of tears. The tears are closed from top to bottom through the edge front surface 151 and the edge rounded surface 153 due to the closing pressure of the upper eyelid during blinking. In addition, a water permeable hole 154 is provided on the peripheral area 15 so that the tears can also be discharged through the water permeable hole 154, so as to further promote the flow and exchange of tears.

[0059] Please refer to Figure 2 In an optional embodiment, a plurality of water permeable holes 154 are provided, and the plurality of water permeable holes 154 are arranged at intervals in a circular array shape. By providing a plurality of water permeable holes 154, tear liquid can be quickly replaced through the water permeable holes 154, thereby enhancing the oxygen supply to the cornea and improving the comfort of the patient when wearing glasses.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A soft contact lens, characterized in that: The soft contact lens comprises: A lens body, the lens body comprising an optical zone and a non-optical zone, the optical zone covers the visual area of ​​the pupil of the eye, and the non-optical zone surrounds the optical zone and is concentrically arranged with the optical zone; A microporous structure, wherein the microporous structure runs through the non-optical area; An anti-blocking structure, wherein the anti-blocking structure is detachably connected to the microporous structure; The microporous structures are provided in plurality, and the plurality of microporous structures are arranged at intervals in the non-optical area; the anti-blocking structures are provided in plurality, and one anti-blocking structure is detachably connected to one of the microporous structures; The lens body further comprises a convex surface and a concave surface opposite to each other, wherein the concave surface is used to cover the contact cornea, and the convex surface is arranged on a side away from the cornea; The microporous structure forms an air guiding cavity, and the air guiding cavity is connected to the convex surface and the concave surface; The anti-blocking structure is detachably connected to the inner wall of the air guide cavity and is close to one side of the convex surface, and the outer convex surface of the anti-blocking structure is lower than the convex surface; The anti-blocking structure is a hollow cylinder with a dome surface, and the anti-blocking structure includes a folded portion and an air inlet hole arranged on the dome surface, and the folded portion is provided with a plurality of folded portions, and the plurality of folded portions are arranged at intervals on the dome surface; The air inlet holes are provided in plurality, and the plurality of air inlet holes are arranged at intervals on the dome surface and are located between adjacent fold parts; The fold part includes a plurality of folds having peaks and roots connected in sequence, and an interception space for intercepting foreign matter is formed between adjacent folds.

2. The soft contact lens according to claim 1, wherein: The anti-blocking structure is further formed with an air inlet cavity, the air inlet hole is connected to the air inlet cavity, and the air inlet cavity is connected to the air guide cavity at a side away from the air inlet hole.

3. The soft contact lens according to claim 2, wherein: A first baffle is provided in the cavity wall of the air inlet cavity, and the first baffle is provided below the air inlet hole. A second baffle is provided in the cavity wall of the air guide cavity, and the first baffle and the second baffle are staggered with each other so that there is a gap between the first baffle and the second baffle in the up and down directions.

4. The soft contact lens according to claim 3, wherein: The first baffle is arranged to be gradually inclined downward from the root to the tip; And / or, the second baffle is arranged to be gradually inclined downward from the root to the tip.

5. The soft contact lens according to any one of claims 1 to 4, characterized in that: The soft contact lens further comprises a peripheral zone, the peripheral zone surrounds the non-optical zone, and the peripheral zone comprises an edge front surface, an edge rear surface, and an edge fillet surface connected to the edge front surface and the edge rear surface; The soft contact lens further comprises a water permeable hole, which is arranged in the peripheral area and penetrates through the edge front surface and the edge rear surface, so that tear liquid can be discharged through the water permeable hole.

6. The soft contact lens according to claim 5, characterized in that There are a plurality of water-permeable holes, and the plurality of water-permeable holes are arranged at intervals in a circular array shape.

Images