Contact lens with one-way medicine carrying function

Abstract

The contact lens with the one-way medicine carrying function comprises an optical area lens main body and an outer ring lens main body, at least one circle of medicine carrying channel is arranged in the outer ring lens main body, a plurality of micropores used for medicine administration are arranged on one side of the outer ring lens main body, which is used for contacting with the surface of an eye, and the micropores are communicated with the optical area lens main body. And the medicine carrying channel is communicated with the micropores through a one-way valve channel. According to the utility model, the medicine in the medicine carrying channel is sequentially conveyed to the one-way valve channel and the micropores through blinking of a user, and the one-way valve channel only allows the medicine to flow forwards, so that the medicine on the eyeball surface can be prevented from reversely flowing back to the medicine carrying channel through the micropores; the one-way valve channel can ensure smooth drug administration, and the drug administration effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of contact lenses, in particular to a contact lens with a unidirectional drug-carrying function. Background Art

[0002] Some patients with eye diseases usually use eye drops to treat eye diseases. After normal eye drops are applied, the concentration of the drops on the surface of the eyeball will quickly rise to a relatively high value, and then be slowly absorbed by the eyeball over a long period of time. The prior art discloses a drug-delivering contact lens and an ophthalmic drug-delivery device, which places a drug-carrying material in a cavity, and then uses the pressure generated by the user's blinking to enable the eaves structure to squeeze the drug-carrying material to release the functional substance, and then the functional substance penetrates inward through the through hole and finally reaches the user's eyeball, thereby achieving the effect of drug delivery.

[0003] However, after the drug-loaded material has been squeezed for a period of time, the drug concentration in the drug-loaded material will decrease. At this time, the drug concentration is lower than the concentration on the surface of the eyeball. Due to the principle of osmotic pressure, the drug on the surface of the eyeball will flow back into the drug-loaded material through the through-holes, resulting in poor effect of eye drug administration. In addition, since the through-holes are bidirectional flow holes, after the drug-loaded material is squeezed to release the drug by blinking, the drug-loaded material will absorb the drug on the surface of the eye through the through-holes during the process of recovering from the squeezed state to the original state, resulting in poor effect of drug administration.

[0004] Therefore the prior art needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a contact lens with a one-way drug loading function. After the lens is squeezed, the drug on the surface of the eye will not flow back into the drug storage cavity, ensuring that the drug can be transported to the surface of the eye in one direction without flowing back, and the drug administration effect is better.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A contact lens with a one-way drug-carrying function comprises an optical zone lens body and an outer ring lens body, wherein at least one circle of drug-carrying channels are arranged in the outer ring lens body, and a side of the outer ring lens body for contacting the eye surface is provided with a plurality of micropores for drug administration, and the drug-carrying channels are connected with the micropores through a one-way valve channel.

[0008] Furthermore, the one-way valve channel includes a channel body and a plurality of flow limiting channels, one end of the channel body is connected to the drug carrying channel, both ends of the flow limiting channel are connected to the interior of the channel body, and when the channel body transports the drug in a forward direction, the opening direction of the inlet of the flow limiting channel forms an obtuse angle with the drug flow direction of the channel body at the inlet, and the opening direction of the outlet of the flow limiting channel forms an acute angle with the drug flow direction of the channel body at the outlet.

[0009] Furthermore, the flow limiting channels are respectively arranged on two opposite sides of the channel body.

[0010] Furthermore, the flow limiting channels are evenly distributed in an array on the channel body.

[0011] Furthermore, a flow tube and a transfer tube are provided between the micropore and the one-way valve channel, the micropore is connected to the flow tube, one end of the transfer tube is connected to the flow tube, and the other end of the transfer tube is connected to the other end of the channel body of the one-way valve channel.

[0012] Furthermore, there are a plurality of flow tubes, and the flow tubes are distributed circumferentially around the center of the outer ring lens body.

[0013] Furthermore, the flow pipe and the one-way valve channel are arranged alternately.

[0014] Furthermore, a plurality of penetration holes are provided on the outer ring lens body, and the penetration holes are communicated with the drug-carrying channel.

[0015] Furthermore, the opening of the penetration hole is provided on the convex surface side of the outer ring lens body.

[0016] Furthermore, the cross section of the permeation hole is trapezoidal, and the diameter of one end of the permeation hole communicating with the drug-carrying channel is smaller than the diameter of the other end of the permeation hole.

[0017] Compared with the prior art, the contact lens with a one-way drug-carrying function provided by the utility model comprises an optical zone lens body and an outer ring lens body, wherein at least one circle of drug-carrying channels is arranged in the outer ring lens body, and a plurality of micropores for drug administration are arranged on the side of the outer ring lens body for contacting the eye surface, and the drug-carrying channel is connected with the micropores through a one-way valve channel. According to the utility model, the drug in the drug-carrying channel is sequentially delivered to the one-way valve channel and the micropores by the user blinking, and the one-way valve channel only allows the drug to flow forward, that is, it can prevent the drug on the surface of the eyeball from flowing back to the drug-carrying channel through the micropores, and the one-way valve channel can ensure smooth drug administration and good drug administration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a structural schematic diagram of a contact lens with a one-way drug loading function provided by the utility model at one angle.

[0020] Figure 2 This is a schematic structural diagram of a contact lens with a one-way drug loading function provided by the utility model from another angle.

[0021] Figure 3 This is a perspective view of the back of a contact lens with a one-way drug loading function provided by the utility model.

[0022] Figure 4 for Figure 3 Schematic diagram of the cross section along point A.

[0023] Figure 5 for Figure 4 A magnified schematic diagram of point B in the middle.

[0024] Figure 6 This is a schematic diagram of the flow of drug in the one-way valve channel when the drug flows forward.

[0025] Figure 7 Schematic diagram of drug flow in the one-way valve channel when the drug flows in reverse direction

[0026] Description of the accompanying drawings:

[0027] 1. Optical zone lens body; 2. Outer ring lens body; 21. Drug-carrying channel; 22. Micropores; 23. One-way valve channel; 231. Channel body; 232. Flow-limiting channel; 2321. Inlet; 2322. Outlet; 24. Flow tube; 25. Transfer tube; 26. Permeation hole. DETAILED DESCRIPTION

[0028] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0030] In the present utility model, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific circumstances.

[0031] In addition, the terms "first" and "second" etc. used in this application can be used to describe various elements in this article, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. When used here, the singular "one", "one" and "said / the" can also include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "include / comprise" or "have" etc. specify the existence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of existing or adding one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0033] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, the contact lens with a one-way drug loading function provided by the utility model comprises an optical zone lens body 1 and an outer ring lens body 2, at least one circle of drug loading channels 21 are arranged in the outer ring lens body 2, and the drug loading channels 21 can be used to store medicine, and a side of the outer ring lens body 2 for contacting the eye surface is provided with a plurality of micropores 22 for drug delivery, and the drug loading channels 21 are connected with the micropores 22 through a one-way valve channel 23.

[0035] It can be understood that the one-way valve channel 23 only allows the drug to flow in one direction, that is, when the user blinks, the eyelids squeeze the outer circle body, so that the drug in the drug-carrying channel 21 flows into the micropores 22 through the one-way valve channel 23. When the drug in the micropores 22 enters the surface of the eyeball, regardless of whether the drug-carrying channel 21 has a certain adsorption tendency when released after being squeezed, the drug on the surface of the eyeball cannot flow back into the drug-carrying channel 21 through the one-way valve channel 23.

[0036] It should be noted that there is no corresponding channel in the optical zone lens body 1 in order to ensure that the light passing through the optical zone lens body 1 can form an image on the retina smoothly and ensure the clarity of the image.

[0037] Compared with the prior art, in the technical solution of the utility model, when the drug carrying channel 21 is squeezed and gradually returns to its original state, the drug carrying channel 21 at this time will have a certain adsorption tendency for the liquid. Since the one-way valve channel 23 is blocked, the drug on the surface of the eye cannot pass through the one-way valve channel 23 into the drug carrying channel 21, that is, it can prevent the drug on the surface of the eyeball from flowing back, ensuring a better drug administration effect.

[0038] Furthermore, if Figure 3 , Figure 4 and Figure 5 As shown, the one-way valve channel 23 includes a channel body 231 and a flow limiting channel 232. One end of the channel body 231 is connected to the drug carrying channel 21, and both ends of the flow limiting channel 232 are connected to the interior of the channel body 231. When the channel body 231 transports drugs in the forward direction, the opening direction of the inlet 2321 of the flow limiting channel 232 forms an obtuse angle with the drug flow direction of the channel body 231 located at the inlet 2321, and the opening direction of the outlet 2322 of the flow limiting channel 232 forms an acute angle with the drug flow direction of the channel body 231 located at the outlet 2322.

[0039] It should be noted that if Figure 6 and Figure 7As shown, the direction of the arrow in the figure represents the direction of drug flow. When the drug-carrying channel 21 has a certain tendency to adsorb drugs after being squeezed, the drugs on the surface of the eye enter the channel body 231 through the micropores 22. At this time, the drug flows in the opposite direction in the channel body 231. When the drug flows to the outlet 2322 of the flow-limiting channel 232, part of the drug will continue to flow forward along the channel body 231, and the other part will enter the flow-limiting channel 232 and flow out from the inlet 2321 of the flow-limiting channel 232. Since the channel body 231 transports drugs in the forward direction, the opening direction of the inlet 2321 of the flow-limiting channel 232 forms an obtuse angle with the drug flow direction of the channel body 231 at the inlet 2321, and the opening direction of the outlet 2322 of the flow-limiting channel 232 forms an acute angle with the drug flow direction of the channel body 231 at the outlet 2322. Therefore, when the drug flows in the reverse direction in the channel body 231, the drug coming out of the inlet 2321 of the flow limiting channel 232 will flow in the opposite direction to the drug flowing in the channel body 231, causing the drug flowing in the channel body 231 to be blocked from moving forward, thereby making it impossible for the drug to flow in the reverse direction in the channel body 231, that is, the flow limiting channel 232 can make the channel body 231 have the effect of unidirectional flow.

[0040] Preferably, if Figure 5 As shown, two opposite sides of the channel body 231 are respectively provided with limited flow channels 232. It is understandable that when the drug flows in the opposite direction in the channel body 231, the two oppositely arranged limited flow channels 232 can have a better blocking efficiency for the drug located at the outlet 2322 of the limited flow channel 232, so that the drug cannot continue to flow forward in the channel body 231.

[0041] Preferably, if Figure 5 As shown, the flow limiting channels 232 are evenly distributed in an array on the channel body 231. It can be understood that one flow limiting channel 232 can block the drug, and when multiple limiting channels are evenly distributed on the channel body 231, it can better block the reverse flow of the drug, that is, it can ensure that the drug on the surface of the eye cannot enter the drug-carrying channel 21 through the one-way valve channel 23.

[0042] For further information, please refer to Figure 3 A flow tube 24 and a transfer tube 25 are arranged between the micropore 22 and the one-way valve channel 23. The micropore 22 is connected to the flow tube 24, one end of the transfer tube 25 is connected to the flow tube 24, and the other end of the transfer tube 25 is connected to the other end of the channel body 231 of the one-way valve channel 23.

[0043] It should be noted that the circulation tube 24 and the transfer tube 25 can be used as intermediate drug storage areas to store drugs, thereby increasing the drug loading capacity of the lens.

[0044] Preferably, there are several flow tubes 24, and the flow tubes 24 are circumferentially arranged around the center of the outer ring lens body 2, ensuring that the flow tubes 24 can evenly deliver drugs to various parts of the outer ring lens body 2 through the micropores 22, ensuring uniform drug administration and ensuring better drug administration effects.

[0045] Preferably, the circulation tube 24 and the one-way valve channel 23 are arranged alternately, which can be understood as taking the center of the outer ring lens body 2 as the center of the circle, in the angular direction, the interconnected one-way valve channel 23 and the circulation tube 24 are located at different angles. Since the thickness of the outer ring lens body 2 is relatively small, the circulation tube 24 and the one-way valve channel 23 are arranged alternately, so that the inner diameters of both the circulation tube 24 and the one-way valve channel 23 can be made as large as possible to facilitate the delivery of drugs.

[0046] Furthermore, if Figure 2 and Figure 5 As shown, a plurality of penetration holes 26 are provided on the outer ring lens body 2, and the penetration holes 26 are connected to the drug-carrying channel 21. It should be noted that the drug-carrying channel 21 is loaded with drugs by soaking the lens in medicine. By utilizing the principle of osmotic pressure, the drugs at the position with high drug concentration will gradually penetrate to the position with low drug concentration, so that the drug-carrying channel 21 can be filled with drugs by utilizing the principle of osmotic pressure. The penetration holes 26 can accelerate the rate at which the drugs penetrate into the drug-carrying channel 21, that is, the efficiency of loading the drugs into the drug-carrying channel 21 can be effectively improved.

[0047] Furthermore, if Figure 2 As shown, the opening of the penetration hole 26 is arranged on the convex side of the outer ring lens body 2. It can be understood that when the lens is squeezed by the eyelid, a small part of the medicine in the drug-carrying channel 21 will be squeezed out to the convex side of the outer ring lens body 2 through the penetration hole 26. This part of the medicine can maintain the humidity of the convex side of the outer ring lens body 2, so that the convex side of the outer ring lens body 2 remains lubricated, effectively improving the wearing comfort. In addition, the opening of the penetration hole 26 is arranged on the convex side of the outer ring lens body 2. When the drug-carrying channel 21 is squeezed and restored to its original state, it has a certain tendency to adsorb the medicine. Since the opening of the penetration hole 26 is arranged on the convex side of the outer ring lens body 2, the drug-carrying channel 21 will not absorb the medicine on the surface of the eyeball (the medicine on the concave side of the outer ring lens body 2) through the penetration hole 26, ensuring that the medicine on the surface of the eyeball can be used for medication of the eye, effectively improving the utilization rate of the medicine.

[0048] Preferably, the cross-section of the permeation hole 26 is trapezoidal, and the diameter of one end of the permeation hole 26 connected to the drug-carrying channel 21 is smaller than the diameter of the other end of the permeation hole 26. When the drug solution is infiltrated, the permeation hole 26 with a trapezoidal cross-section is more conducive to the penetration of the drug, effectively improving the working efficiency of the drug penetration.

[0049] In summary, the contact lens with one-way drug loading function provided by the utility model has two relatively arranged limiting channels 232, which can have a better blocking efficiency for the drug located at the outlet 2322 of the limiting channel 232, so that the drug cannot continue to flow forward in the channel body 231. When multiple limiting channels are evenly distributed on the channel body 231, it can have a better effect of blocking the reverse flow of the drug, that is, it can ensure that the drug on the surface of the eye cannot enter the drug loading channel 21 through the one-way valve channel 23. The flow tube 24 and the one-way valve channel 23 are staggered, and the inner diameters of both the flow tube 24 and the one-way valve channel 23 can be made as large as possible to facilitate drug delivery. The penetration hole 26 can accelerate the rate at which the drug penetrates into the drug loading channel 21, that is, it can effectively improve the efficiency of loading the drug into the drug loading channel 21. Compared with the prior art, in the technical solution of the utility model, when the drug carrying channel 21 is squeezed and gradually returns to its original state, the drug carrying channel 21 at this time will have a certain adsorption tendency for the liquid. Due to the obstruction of the one-way valve channel 23, the drug on the surface of the eye cannot pass through the one-way valve channel 23 into the drug carrying channel 21, that is, it can prevent the drug on the surface of the eyeball from flowing back, thereby ensuring a better drug administration effect.

[0050] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all belong to the protection scope of the utility model.

Claims

1. A contact lens with one-way drug loading function, It is characterized in that The invention comprises an optical zone lens body and an outer ring lens body, wherein at least one circle of drug-carrying channels is arranged inside the outer ring lens body, and a plurality of micropores for drug administration are arranged on the side of the outer ring lens body for contacting the eye surface, and the drug-carrying channels are connected with the micropores through a one-way valve channel.

2. The contact lens with one-way drug loading function according to claim 1, It is characterized in that The one-way valve channel includes a channel body and a plurality of flow limiting channels, one end of the channel body is connected to the drug carrying channel, and both ends of the flow limiting channel are connected to the interior of the channel body. When the channel body transports the drug in the forward direction, the opening direction of the inlet of the flow limiting channel forms an obtuse angle with the drug flow direction of the channel body at the inlet, and the opening direction of the outlet of the flow limiting channel forms an acute angle with the drug flow direction of the channel body at the outlet.

3. The contact lens with one-way drug loading function according to claim 2, It is characterized in that The flow limiting channels are respectively arranged on two opposite sides of the channel body.

4. The contact lens with one-way drug loading function according to claim 3, It is characterized in that The flow-limiting channels are evenly distributed in an array on the channel body.

5. The contact lens with one-way drug loading function according to claim 2, It is characterized in that A flow tube and a transfer tube are provided between the micropore and the one-way valve channel, the micropore is connected to the flow tube, one end of the transfer tube is connected to the flow tube, and the other end of the transfer tube is connected to the other end of the channel body of the one-way valve channel.

6. The contact lens with one-way drug loading function according to claim 5, It is characterized in that There are a plurality of flow tubes, and the flow tubes are distributed circumferentially around the center of the outer ring lens body.

7. The contact lens with one-way drug loading function according to claim 6, It is characterized in that The flow pipe and the one-way valve channel are arranged alternately.

8. The contact lens with one-way drug loading function according to claim 1, It is characterized in that The outer ring lens body is provided with a plurality of penetration holes, and the penetration holes are communicated with the drug-carrying channel.

9. The contact lens with one-way drug loading function according to claim 8, It is characterized in that The opening of the penetration hole is arranged on the convex surface side of the outer ring lens body.

10. The contact lens with one-way drug loading function according to claim 9, It is characterized in that The cross section of the permeation hole is trapezoidal, and the diameter of one end of the permeation hole communicating with the drug-carrying channel is smaller than the diameter of the other end of the permeation hole.

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