A corneal contact lens

Abstract

The present invention discloses a corneal contact lens, which comprises a lens body, wherein the lens body comprises a refractive correction layer and an attachment layer which are sequentially overlapped from top to bottom; the refractive correction layer comprises an optical region located in the middle region thereof, and a non-optical region arranged around the optical region; the attachment layer is arranged in an annular shape, and a connecting cavity is arranged inside the connecting cavity, and the connecting cavity is arranged corresponding to the optical region, and a plurality of connecting channels connecting the connecting cavity and the peripheral side of the attachment layer are also provided on the attachment layer. The present invention aims to solve the problem that the existing corneal contact lens blocks the contact between the eyeball and the air when worn.

Description

Technical Field

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

[0002] Contact lenses are a type of lens that is worn directly on the eyeball and is mainly used for vision correction. For some special jobs, people need to wear contact lenses to ensure eye safety. At the same time, due to people's pursuit of beauty, more young people choose to wear colored contact lenses to increase their beauty. At present, with the development of technology and people's demands for the comfort of wearing contact lenses, additional requirements have been put forward; therefore, the lens materials of contact lenses have also been continuously updated.

[0003] However, current hydrophilic contact lens materials face many challenges: First, unlike other human organs, the eyeball has no oxygen supply blood vessels, and mainly absorbs oxygen and water from the air to promote metabolism and maintain its own nutrition; once the oxygen supply is insufficient, it will cause corneal redness, inflammation, dry eyes and other problems. Wearing contact lenses significantly hinders the contact between the eyeball and the air. Summary of the invention

[0004] The main purpose of the present invention is to provide a corneal contact lens, aiming to solve the problem that the existing corneal contact lens blocks the contact between the eyeball and the air when worn.

[0005] To achieve the above-mentioned purpose, the present invention provides a corneal contact lens, comprising a lens body, wherein the lens body comprises a refractive correction layer and an attachment layer which are sequentially stacked from top to bottom;

[0006] The refractive correction layer includes an optical area located in the central area thereof, and a non-optical area arranged around the optical area;

[0007] The attachment layer is arranged in an annular shape, and the inner side thereof is arranged as a communication cavity, and the communication cavity is arranged corresponding to the optical area. The attachment layer is also provided with a plurality of communication channels connecting the communication cavity and the peripheral side of the attachment layer.

[0008] Optionally, the communication channel is arranged to extend in the radial direction of the attachment layer and to surround in the circumferential direction of the attachment layer.

[0009] Optionally, the attachment layer includes:

[0010] a connecting layer, the connecting layer being arranged in a ring shape and correspondingly connected to the refractive correction layer; and

[0011] A plurality of attachment ribs are arranged on the lower side of the connection layer and extend radially along the connection layer. The plurality of attachment ribs are arranged circumferentially around the connection layer and are spaced apart in pairs to form the connecting channel.

[0012] Optionally, the communication channel includes a first channel and a second channel that are connected to each other, the first channel is connected to the communication cavity, and the second channel is connected to the outside of the attachment layer;

[0013] The first channel is arranged to be tapered in a direction away from the connecting cavity.

[0014] Optionally, the second channels are arranged to be alternately bent in a radial direction of the connection layer.

[0015] Optionally, the corneal contact lens further comprises a plurality of limiting structures, each of which is disposed in a corresponding first channel to limit the liquid flowing into the communicating cavity from flowing out of the first channel.

[0016] Optionally, the limiting structure comprises limiting portions which are sequentially arranged at intervals along the extension direction of the first channel, and each of the limiting portions can be elastically deformed;

[0017] Each of the limiting portions is installed on the cavity wall of the first channel and is extended obliquely toward the connecting cavity to form an angle with the cavity wall of the first channel.

[0018] Optionally, in the extension direction of the first channel, two adjacent limiting portions are arranged on two opposite cavity walls of the first channel.

[0019] Optionally, an air bag connected to the connecting channel is further provided in the attachment layer, and a color-changing material layer is provided in the air bag, and the color-changing material layer is used to change color along with the water content of the connecting channel.

[0020] Optionally, the color-changing material layer includes at least one of a xanthan gum aqueous solution and a chitosan aqueous solution.

[0021] In the technical solution of the present invention, when a wearer wears the corneal contact lens, the vision is mainly corrected through the optical area on the corneal contact lens, and corresponding to this area, there is also a connecting cavity between the optical area and the human cornea. The connecting cavity can supply oxygen to the human cornea corresponding to the optical area through the connecting channel to avoid hypoxia in the human cornea. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 A schematic cross-sectional view of an embodiment of a corneal contact lens provided by the present invention;

[0024] Figure 2 A schematic structural diagram of an embodiment of a corneal contact lens provided by the present invention;

[0025] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0026] Description of Figure Numbers:

[0027] Label name Label name 100 Contact lenses 121 Connection Layer 1 Lens body 122 Attached ribs 11 Refractive correction layer 31 First Channel 12 Attachment layer 32 Second channel 111 Optical area 4 Limiting structure 112 Non-optical area 41 Limiting part 2 Connecting cavity 5 Airbag 3 Connecting Channels 6 Color-changing material layer 12 Attachment layer

[0028] 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

[0029] 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.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications 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.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. 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.

[0032] Contact lenses are a type of lens that is worn directly on the eyeball and is mainly used for vision correction. For some special jobs, people need to wear contact lenses to ensure eye safety. At the same time, due to people's pursuit of beauty, more young people choose to wear colored contact lenses to increase their beauty. At present, with the development of technology and people's demands for the comfort of wearing contact lenses, additional requirements have been put forward; therefore, the lens materials of contact lenses have also been continuously updated.

[0033] However, current hydrophilic contact lens materials face many challenges: First, unlike other human organs, the eyeball has no oxygen supply blood vessels, and mainly absorbs oxygen and water from the air to promote metabolism and maintain its own nutrition; once the oxygen supply is insufficient, it will cause corneal redness, inflammation, dry eyes and other problems. Wearing contact lenses significantly hinders the contact between the eyeball and the air.

[0034] In view of this, the present invention provides a corneal contact lens. Figures 1 to 3 This is an embodiment of the present invention.

[0035] See also Figures 1 to 3 The corneal contact lens 100 includes a lens body 1, and the lens body 1 includes a refractive correction layer 11 and an attachment layer 12 which are stacked in sequence from top to bottom; the refractive correction layer 11 includes an optical area 111 located in the central area thereof, and a non-optical area 112 arranged around the optical area 111; the attachment layer 12 is arranged in a ring shape, and its inner side is arranged as a connecting cavity 2, and the connecting cavity 2 is arranged corresponding to the optical area 111, and the attachment layer 12 is also provided with a plurality of connecting channels 3 connecting the connecting cavity 2 and the peripheral side of the attachment layer 12.

[0036] In the technical solution of the present invention, when a wearer wears the corneal contact lens 100, vision correction is mainly performed through the optical area 111 on the corneal contact lens 100, and corresponding to this area, there is also the connecting cavity 2 between the optical area 111 and the human cornea. The connecting cavity 2 can supply oxygen to the human cornea corresponding to the optical area 111 through the connecting channel 3, so as to avoid hypoxia of the human cornea.

[0037] Furthermore, the communication channel 3 is arranged to extend in the radial direction of the attachment layer 12 and to surround the circumference of the attachment layer 12. By providing a plurality of the communication channels 3 to surround the attachment layer 12, the oxygen supply rate is increased, and the plurality of communication channels 3 are arranged so that oxygen can be introduced into the communication cavity 2 from all angles of the attachment layer 12.

[0038] Further, the attachment layer 12 includes a connection layer 121 and a plurality of attachment ribs 122. The connection layer 121 is arranged in an annular shape and is correspondingly connected to the refractive correction layer 11; the plurality of attachment ribs 122 are arranged on the lower side of the connection layer 121 and are arranged to extend radially along the connection layer 121; the plurality of attachment ribs 122 are arranged around the circumference of the connection layer 121 and are spaced apart from each other to form the connecting channel 3. That is, in this embodiment, by providing the plurality of attachment ribs 122 on the lower side of the connection layer 121, when the corneal contact lens 100 is attached to the human cornea, it is attached through the plurality of attachment ribs 122, that is, in the non-optical area 112, the area occupied by the connecting channel 3 does not contact the human cornea, thereby expanding the non-contact area between the corneal contact lens 100 and the human cornea, so as to further avoid a series of problems caused by insufficient oxygen supply when people wear contact lenses. In addition, the connecting channel 3 is formed by the human cornea, the attachment ribs 122 and the connecting layer 121 after wearing the corneal contact lens 100. When the cornea has problems such as dryness, eye drops can be dripped into the eyes. The eye drops flow on the surface of the eyeball and into the connecting cavity 2 along the connecting channel 3 to alleviate problems such as interference with the cornea. That is, the eye drops can moisturize the corresponding parts of the cornea of ​​the connecting channel 3 and the connecting cavity 2, and some eye drops can be stored in the connecting cavity 2 to further increase the time that the eye drops stay on the surface of the cornea.

[0039] Furthermore, in order to further increase the time that the eye drops stay between the corneal contact lens 100 and the human cornea, in one embodiment of the present invention, the communication channel 3 includes a first channel 31 and a second channel 32 that are interconnected, the first channel 31 correspondingly connects to the communication cavity 2, and the second channel 32 correspondingly connects to the outside of the attachment layer 12; the first channel 31 is arranged to be tapered in the direction away from the communication cavity 2. That is, the eye drops can enter the communication cavity 2 through the first channel 31 that is arranged to be tapered, and the first channel 31 has a smaller opening at one end close to the first channel 31, and the eye drops are not easy to flow back from the first channel 31 under the action of their own tension, so that most of the eye drops that flow into the communication cavity 2 are retained in the communication cavity 2, so as to greatly alleviate the discomfort caused by corneal dryness.

[0040] Furthermore, the second channels 32 are alternately bent in the radial direction of the connecting layer 121. In this embodiment, by arranging the second channels 32 to be alternately bent, the eye drops flowing into the second channels 32 will also be partially retained at the bent position of the second channels 32 by the tension of water, so as to continuously moisten the human cornea.

[0041] See also Figures 2 to 3 The contact lens 100 further includes a plurality of limiting structures 4, each of which is disposed in the corresponding first channel 31 to limit the liquid flowing into the communication cavity 2 from flowing out of the first channel 31. The limiting structures 4 are provided to further reduce the amount of eye drops flowing out of the communication cavity 2 to the outside of the contact lens 100.

[0042] Furthermore, the limiting structure 4 includes limiting portions 41 arranged in sequence at intervals along the extension direction of the first channel 31, and each limiting portion 41 can be elastically deformed; each limiting portion 41 is installed on the cavity wall of the first channel 31, and is obliquely extended in the direction of the connecting cavity 2, so as to form an angle with the cavity wall of the first channel 31. That is, by providing the limiting portion 41, it can be elastically arranged. In the first channel 31, along the direction from the second channel 32 to the connecting cavity 2, the limiting portion 41 and the cavity wall of the connecting cavity 2 are arranged at an obtuse angle, so that the limiting portion 41 will not block the eye drops from flowing into the connecting cavity 2. The obtuse angle formed by it is not easy for the eye drops to adhere. It can also be elastically deformed to ensure that the eye drops can be deformed when the human body blinks or the eye drops flow naturally, thereby expanding the path for the eye drops to pass through. In the direction from the connecting cavity 2 to the second channel 32, the limiting portion 41 and the cavity wall of the connecting cavity 2 are arranged at an acute angle. When the eye drops flow out of the connecting cavity 2, due to its own tension, it will be trapped at the acute angle formed by the limiting portion 41 and the connecting cavity 2, so that part of the eye drops will still be attached to the first channel 31 to moisten the human cornea position corresponding to the first channel 31.

[0043] Furthermore, in the extension direction of the first channel 31, two adjacent limiting portions 41 are disposed on two opposite walls of the first channel 31. By disposing the two adjacent limiting portions 41 on two opposite walls of the first channel 31, the attachment positions of the eye drops are separated, so that the dispersed attachment area is larger. In addition, this design can further limit the eye drops from the first channel 31 to the outside of the attachment layer 12.

[0044] See also Figure 1 The attachment layer 12 is further provided with an air bag 5 connected to the communication channel 3, and the air bag 5 is provided with a color-changing material layer 6, and the color-changing material layer 6 is used to change color along with the water content of the communication channel 3. By providing the color-changing material layer 6 in the air bag 5, the user can judge the change of water content at the eye position according to the color change of the color-changing material layer 6, so as to remind the user to use eye drops in time.

[0045] The specific material of the color-changing material layer 6 is not limited, and can be a xanthan gum aqueous solution or a chitosan aqueous solution. The xanthan gum aqueous solution can change color when the eyes are dehydrated to remind the user, while the chitosan aqueous solution can further detect the blood sugar changes of the user.

[0046] 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 corneal contact lens, characterized in that: The lens body comprises a refractive correction layer and an attachment layer which are sequentially stacked from top to bottom; The refractive correction layer includes an optical area located in the central area thereof, and a non-optical area arranged around the optical area; The attachment layer is arranged in an annular shape, and the inner side thereof is arranged as a communication cavity, and the communication cavity is arranged corresponding to the optical area. The attachment layer is also provided with a plurality of communication channels connecting the communication cavity and the peripheral side of the attachment layer; The communication channel is arranged to extend in the radial direction of the attachment layer and to surround the circumference of the attachment layer; The attachment layer comprises: a connecting layer, the connecting layer being arranged in a ring shape and correspondingly connected to the refractive correction layer; and A plurality of attachment ribs, the plurality of attachment ribs are arranged on the lower side of the connection layer and extend radially along the connection layer, the plurality of attachment ribs are arranged around the circumference of the connection layer and are spaced apart in pairs to form the communication channel; The communication channel comprises a first channel and a second channel that are interconnected, the first channel correspondingly connects to the communication cavity, and the second channel correspondingly connects to the outside of the attachment layer; The first channel is arranged to be tapered in a direction away from the communicating cavity; The second channels are arranged to be alternately bent in the radial direction of the connection layer.

2. The contact lens according to claim 1, wherein: The corneal contact lens further includes a plurality of limiting structures, each of which is disposed in a corresponding first channel to limit the liquid flowing into the communicating cavity from flowing out of the first channel.

3. The contact lens according to claim 2, wherein: The limiting structure comprises limiting parts arranged in sequence and at intervals along the extension direction of the first channel, and each of the limiting parts can be elastically deformed; Each of the limiting portions is installed on the cavity wall of the first channel and is extended obliquely toward the connecting cavity to form an angle with the cavity wall of the first channel.

4. The contact lens according to claim 3, wherein: In the extension direction of the first channel, two adjacent limiting portions are arranged on two opposite cavity walls of the first channel.

5. The contact lens according to claim 1, wherein: An air bag connected to the connecting channel is also arranged in the attachment layer, and a color-changing material layer is arranged in the air bag. The color-changing material layer is used to change color along with the water content of the connecting channel.

6. The contact lens according to claim 5, wherein: The color-changing material layer includes at least one of a xanthan gum aqueous solution and a chitosan aqueous solution.

Images