Contact lens wet packaging

Abstract

The utility model relates to the technical field of medical supplies for ophthalmology, in particular to a wet package for a contact lens. The wet package of the contact lens comprises a first film, a second film and a supporting piece, the first film is opposite to the second film, one side, far away from the first film, of the second film is recessed to form an accommodating cavity, and the accommodating cavity is used for accommodating a contact lens and filling lens preserving fluid; the supporting piece is arranged in the accommodating cavity and is used for supporting the contact lens and enabling the contact lens to be placed in a manner that the convex surface faces the opening side of the accommodating cavity; at least parts of the first film and the second film, which surround the periphery of the opening of the accommodating cavity, are hermetically connected, so that a sealing surface is formed. According to the utility model, the second film has certain plasticity, and the flatness of the sealing surface can be self-corrected when the second film is combined with the first film in a heat sealing manner, so that the processing requirement is reduced, the product yield is improved, and a large amount of resource waste is avoided; the supporting piece has a supporting effect and protects the lens, and the risk that the lens is damaged in the transportation and storage process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of contact lens packaging technology, and in particular to a wet packaging for contact lenses. Background Technology

[0002] Contact lenses are lenses that cover the surface of the cornea and are used to correct refractive errors such as myopia, hyperopia, and astigmatism. Figure 1 and Figure 2 The structure of the packaging box for corneal contact lenses using existing technology is shown. For example... Figure 1 As shown, the initial packaging of these lenses is typically a sealed package consisting of a polypropylene cup and a first film. The cup is filled with a certain amount of lens preservation solution, and the lens is placed in the solution. Figure 2 As shown, the polypropylene packaging cup is injection molded from polypropylene raw material and consists of a lens storage area, a sealing surface, and a handle. The sealing surface is located on the outer periphery of the open end of the lens storage area and is a raised platform with a certain width and height. This platform is the area where the packaging cup is heat-sealed with the first film. The first film is a multi-layered film composed of polyethylene, aluminum, adhesive, polypropylene, etc. Under the action of heating and pressure, the first film bonds with the sealing surface of the packaging cup to achieve sealed preservation of the lens. After sealing, the packaging is usually sterilized by moist heat to kill microorganisms, so that the lens is provided to the user in a sterile state. Although this type of packaging is currently widely used, it has the following technical defects:

[0003] 1. To ensure the reliability of heat sealing, the sealing surface of the packaging cup usually needs to have a high degree of flatness during injection molding. If the flatness is out of tolerance, a large number of scrap products will be generated, resulting in a waste of production resources.

[0004] 2. Although the flatness of the sealing surface of the packaging cup is strictly controlled at the production end, it is impossible to completely prevent packaging cups with flatness defects from being used. Packaging cups with flatness defects may have heat sealing defects, and these defects are not easy to detect. This may lead to packaging failure, lens contamination by bacteria, and other problems, posing safety risks to users.

[0005] 3. Currently, the sealing surface is usually round, which makes it difficult for users to open the packaging, and the lens preservation solution inside can easily spill out when the packaging is opened;

[0006] 4. Existing packaging boxes are usually about 10mm thick. When it is necessary to store and carry a certain number of spare parts (especially daily disposable lenses), the thicker packaging boxes will take up a lot of space, causing inconvenience to users. This shortcoming of poor portability is even more prominent for users with travel needs.

[0007] Therefore, the packaging of contact lenses still needs to be improved to solve the above problems. Utility Model Content

[0008] This utility model provides a wet packaging for contact lenses to solve the technical problems in the prior art, such as low product yield leading to waste of production resources, heat sealing defects causing lens contamination, difficulty in opening the packaging, easy leakage of lens preservation liquid when opening the packaging, and poor portability of wet packaging.

[0009] This invention provides a wet packaging for contact lenses, comprising a first film, a second film, and a support member; the first film and the second film are opposite to each other, and the second film is recessed towards the side away from the first film to form a receiving cavity, the receiving cavity being used to place the contact lens and fill it with lens preservation fluid; the support member is disposed in the receiving cavity to support the contact lens and to place it in such a way that its convex surface faces the opening side of the receiving cavity; at least the portions of the first film and the second film surrounding the outer periphery of the opening of the receiving cavity are sealed together, thereby forming a sealing surface.

[0010] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the second film is a multi-layer composite film comprising a nylon layer, a polyurethane adhesive layer, a soft aluminum foil, and a heat-sealing coating, and is malleable; the sealing surface is formed by heat sealing the first film and the second film.

[0011] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the support member is a deformable component made of at least one material selected from sponge, foam, silicone, and plastic.

[0012] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the side of the support member opposite to the first film is a curved surface that matches the rear surface of the contact lens.

[0013] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the depth of the accommodating cavity is less than or equal to 1.5 mm, and the contact lens is in a compressed state.

[0014] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the support member has multiple liquid permeation holes.

[0015] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the plurality of liquid permeable holes are distributed in concentric circles or in a vortex pattern.

[0016] According to an embodiment of the present invention, a wet packaging for a contact lens includes a liquid permeation hole comprising a circular hole and a strip-shaped hole. The strip-shaped hole is disposed on the outer periphery of the circular hole, and the length direction of the strip-shaped hole coincides with the radial direction of the circular hole.

[0017] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the shape of the sealing surface includes at least one sharp corner, the tip of which faces away from the receiving cavity.

[0018] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the support is a sponge block, and the gaps in the sponge block are filled with the lens preservation fluid.

[0019] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the support member is a sheet plate, and the sheet plate is provided with a plurality of liquid permeation holes.

[0020] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the contact lens is a corneal contact lens or a scleral contact lens, wherein the corneal contact lens is a soft corneal contact lens, a rigid corneal contact lens, or a hybrid corneal contact lens, and the rigid corneal contact lens includes a rigid non-permeable corneal contact lens, a rigid permeable corneal contact lens, or an orthokeratology lens.

[0021] According to an embodiment of the present invention, a wet packaging for a contact lens is provided, wherein the contact lens is a contact lens.

[0022] This invention employs a heat-sealing method by bonding a second film and a first film together, placing a corneal contact lens and a support within the accommodating cavity. Compared to polypropylene packaging cups, which require an additional raised ring as a sealing surface, the second film provided by this invention does not require an additional raised ring. Since the second film is made of a malleable material, it possesses a certain degree of plasticity. During the heat-sealing process between the second and first films, the flatness of the sealing surface can be self-corrected under the action of heating and pressure. The sealing surface is formed at the bonding point of the second and first films, and the sealing surface, the second film, and the first film are all on the same plane, thereby ensuring flatness, reducing processing requirements, improving product yield, and avoiding significant resource waste.

[0023] Compared to existing technologies where the sealing surface is usually circular, the sealing surface of this technology can be designed as various annular shapes with sharp corners, making it easier to open the packaging from the sharp corners and preventing the preservation liquid from spilling out.

[0024] The support component provides support and protection for the lens, reducing the risk of damage during transportation and storage.

[0025] Compared to traditional packaging, this invention can significantly reduce the thickness from about 10mm to about 1.5mm, making it smaller, lighter, and more convenient for users to store and carry, while also reducing the use of lens preservation solution. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional view of the wet packaging of contact lenses in the prior art.

[0028] Figure 2 This is a side cross-sectional view of the wet packaging of contact lenses in the prior art.

[0029] Figure 3 This is a plan view of the wet packaging of the contact lens provided by this utility model.

[0030] Figure 4 This is an example diagram showing the shape of the sealing surface provided by this utility model.

[0031] Figure 5 This is a side sectional view of the wet packaging of the contact lens provided in Embodiment 1 of this utility model.

[0032] Figure 6 This is a side sectional view of the wet packaging of the contact lens provided in Embodiment 2 of this utility model.

[0033] Figure 7 This is a schematic diagram of the position of the sheet plate provided in Embodiment 2 of this utility model.

[0034] Figure 8 This is one of the liquid permeation hole arrangement methods provided in Embodiment 2 of this utility model.

[0035] Figure 9 This is the second arrangement of liquid permeable holes provided in Embodiment 2 of this utility model.

[0036] Figure 10 This is the third arrangement of liquid permeable holes provided in Embodiment 2 of this utility model.

[0037] Figure 11 This is the fourth arrangement of liquid permeable holes provided in Embodiment 2 of this utility model.

[0038] Figure 12 This is the fifth arrangement of liquid permeable holes provided in Embodiment 2 of this utility model.

[0039] Figure 13 This is a side sectional view of the wet packaging of the contact lens provided in Embodiment 3 of this utility model.

[0040] Figure label:

[0041] 1. First membrane; 2. Second membrane; 3. Sealing surface; 31. Sharp corner; 41. Sponge block; 42. Sheet plate; 421. Liquid permeation hole; 5. Receptacle; 6. Corneal contact lens. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0043] The following is combined Figures 3-13 Description of embodiments of this utility model.

[0044] Figure 3 This is a plan view of the wet packaging of the contact lens provided by this utility model. Figure 5 This is a side sectional view of the wet packaging of the contact lens provided in Embodiment 1 of this utility model.

[0045] like Figure 3 and Figure 5 As shown, Embodiment 1 of this utility model provides a wet packaging for a contact lens, including a first film 1, a second film 2, a sealing surface 3, and a support member; the first film 1 and the second film 2 are opposite to each other, and the second film 2 is recessed toward the side away from the first film 1 to form a receiving cavity 5. The receiving cavity 5 is used to place the contact lens 6. The receiving cavity 5 is formed by stamping the second film 2 with a stamping machine. The processing is relatively convenient and no mold is required. Therefore, the receiving cavity 5 can be processed into various shapes according to appearance requirements.

[0046] A support member is disposed in the accommodating cavity 5 to support the contact lens 6. In Embodiment 1, the support member is a sponge block 41, and the gaps in the sponge block 41 are filled with lens preservation fluid. Therefore, in Embodiment 1, the sponge block 41 filled with lens preservation fluid can provide the humid preservation environment required for the contact lens 6.

[0047] Furthermore, according to the wet packaging of the contact lens provided in this embodiment, the convex surface of the contact lens 6 faces the opening direction of the receiving cavity 5. This arrangement is to make it more convenient for the user to take out the contact lens 6. The side of the sponge block 41 opposite to the contact lens 6 is curved and cooperates with the rear surface of the contact lens 6 (i.e. the side of the contact lens facing the cornea when worn). The sponge block 41 provides support for the contact lens 6, and at the same time, the sponge block 41 has a certain degree of adsorption for the contact lens 6, thereby limiting and protecting the contact lens 6.

[0048] Furthermore, in this embodiment, the sponge block 41 is made of a material with high water absorption properties, such as PVA sponge or non-woven fabric. While meeting the requirements of high water absorption, the material of the sponge block 41 should also have sufficient flexibility to avoid damaging the contact lens 6. In addition, the sponge block 41 has a large deformation capacity and is more likely to deform when squeezed. In this way, during transportation or transfer, it can effectively protect the contact lens 6 while significantly reducing the space occupied.

[0049] Figure 4 This is an example diagram showing the shape of the sealing surface 3 provided by this utility model, such as... Figure 4 As shown, the first film 1 is a multilayer film composed of polyethylene, aluminum, adhesive, polypropylene, etc., and the second film 2 is a multilayer composite film with extensibility, composed of a nylon layer, a polyurethane adhesive layer, a soft aluminum foil, a heat-sealing coating, etc., and has a certain degree of plasticity. The first film 1 and the second film 2 are bonded together under heating and pressure. The sealing surface 3 is formed by bonding the first film 1 and the second film 2 together, and the sealing surface 3 is arranged around the outer periphery of the opening of the accommodating cavity 5. The sealing surface 3 is formed by heat sealing the first film 1 and the second film 2. Compared with the prior art, the second film 2 provided in this embodiment of the utility model does not have a dedicated and protruding sealing surface 3. The first film 1 and the second film 2 can be heat-sealed together at any position. Therefore, the size, width, shape, etc. of the sealing surface 3 are determined by the heat sealing head of the heat sealing equipment according to actual needs. In addition to surface self-correction, the second film 2 can also undergo other surface treatment processes, such as adding an adhesive layer, to improve the reliability of its heat sealing with the first film 1, which can significantly reduce the risk of packaging failure and lens contamination. In addition, the existing translucent polypropylene packaging cups cannot be visually designed and are not aesthetically pleasing, while the second film 2 allows for more visual design on its outer surface, resulting in a higher level of aesthetics.

[0050] According to an embodiment of the present invention, a wet packaging for a contact lens is provided. The shape of the sealing surface 3 includes a circular ring, a polygonal ring, and an irregular ring. The irregular ring can be heart-shaped, fan-shaped, teardrop-shaped, etc. The irregular ring includes at least one sharp corner 31. The tip of the sharp corner 31 faces away from the receiving cavity 5, which makes it convenient for the user to tear the first film 1 from one end of the sharp corner 31. This design is more labor-saving and user-friendly.

[0051] Figure 6 This is a side sectional view of the wet packaging of the contact lens provided in Embodiment 2 of this utility model. Figure 7 This is a schematic diagram showing the position of the sheet plate 42 provided in Embodiment 2 of this utility model. Figure 6 and Figure 7 As shown, in Embodiment 2 provided by this utility model, the accommodating cavity 5 is filled with lens preservation fluid, and the contact lens 6 is immersed in the lens preservation fluid to provide a humid preservation environment for the contact lens 6.

[0052] Furthermore, according to the wet packaging of the contact lens provided in this embodiment of the present invention, the support is a sheet plate 42, which can be circular, elliptical, or other shapes, with a thickness of 0.3~1.0mm; the sheet plate 42 is injection molded from materials such as polypropylene and has a certain rigidity. The sheet plate 42 provides support and protection for the contact lens 6, especially the edge of the lens; the surface of the sheet plate 42 is provided with multiple liquid permeation holes 421, which are used for the lens preservation liquid to pass through the sheet plate 42, preventing the sheet plate 42 from floating in the lens preservation liquid, but instead placing it stably at the bottom of the receiving cavity 5, thus providing stable support for the contact lens 6;

[0053] Furthermore, according to the wet packaging of the contact lens provided in this embodiment, the depth of the accommodating cavity 5 is less than or equal to 1.5 mm, and the depth of the accommodating cavity 5 is 0.3 to 1.2 mm greater than the thickness of the sheet plate 42. Compared with the prior art, the accommodating cavity 5 provided in this embodiment only needs to be filled with a small amount of lens preservation fluid. Moreover, since the depth of the accommodating cavity 5 is very small, the thickness of the entire packaging is also greatly reduced, making it more convenient for users to carry. Since the contact lens 6 has a certain sag and a certain degree of flexibility and elasticity, after the first film 1 and the second film 2 are heat-sealed together, the contact lens 6 is fixed between the first film 1 and the sheet plate 42 in a compressed form. After the user opens the packaging, the contact lens 6 automatically returns to its normal state.

[0054] further, Figure 8 This is one arrangement of the liquid permeation holes 421 provided in Embodiment 2 of this utility model, such as... Figure 8 As shown, in Embodiment 2 of this utility model, the liquid permeation hole 421 is a circular hole, the sheet plate 42 is circular, a central hole is provided at the center of the sheet plate 42, and the remaining circular holes are distributed in multiple concentric circles in the radial direction of the sheet plate 42 with the central hole as the center, which can maximize the liquid permeation.

[0055] Figure 9 This is the second arrangement of the liquid permeation holes 421 provided in Embodiment 2 of this utility model, such as... Figure 9 As shown, in Embodiment 2 of this utility model, the liquid permeation hole 421 is a circular hole, the sheet plate 42 is circular, there are multiple sets of circular holes, each set of circular holes is spaced apart, and the line connecting the circular holes in the set is a curve. The ends of the multiple curves are all located at the center of the sheet plate 42, so that the circular holes are distributed in a vortex shape.

[0056] Figure 10 This is the third arrangement of the liquid permeation holes 421 provided in Embodiment 2 of this utility model, such as... Figure 10 As shown, in Embodiment 2 of this utility model, the sheet plate 42 is circular, and the liquid permeation hole 421 includes a strip hole and a circular hole. The circular hole is located at the center of the sheet plate 42, and the strip hole is located on the outer periphery of the circular hole. The length direction of the strip hole coincides with the radial direction of the circular hole, and the strip hole and the circular hole are connected.

[0057] Figure 11 This is the fourth arrangement of the liquid permeation holes 421 provided in Embodiment 2 of this utility model, such as... Figure 11 As shown, in Embodiment 2 of this utility model, the sheet plate 42 is circular, and the liquid permeation hole 421 includes a first circular hole, a second circular hole, and a strip hole; there is one first circular hole, which is located at the center of the sheet plate 42, and there are multiple second circular holes, which are arranged around the first circular hole at equal intervals; the number of strip holes corresponds to the number of second circular holes, and the strip holes are located on the side of the second circular hole away from the first circular hole. The strip holes are located on the outer periphery of the second circular hole, and the length direction of the strip holes coincides with the radial direction of the first circular hole; wherein, the width of the strip hole at the end near the second circular hole is smaller than the width at the other end, and the combined shape of the strip holes and the second circular holes after one-to-one correspondence is a "!" shape.

[0058] Figure 12 This is the fifth arrangement of the liquid permeation holes 421 provided in Embodiment 2 of this utility model, such as... Figure 12 As shown, in Embodiment 2 of this utility model, the sheet plate 42 is circular, and the liquid permeation hole 421 includes a circular hole and a strip hole; the circular hole is located at the center of the sheet plate 42, and the strip hole is located on the outer periphery of the circular hole, with the length direction of the strip hole coinciding with the radial direction of the circular hole; wherein, the strip hole is arc-shaped in the length direction, and the strip hole and the circular hole are not connected.

[0059] Figure 13 This is a side sectional view of the wet packaging of the contact lens provided in Embodiment 3 of this utility model, as shown. Figure 7 As shown, Embodiment 3 of this utility model provides a wet packaging for contact lenses, which differs from Embodiment 2 in that: the support is a sponge block 41. The wet sponge block 41 is placed in the receiving cavity 5, and the corneal base lens is placed on the sponge block 41. Since the sponge block 41 is compressible, during packaging, the sponge block 41 and the contact lens 6 are fixed in a compressed form between the first membrane 1 and the second membrane 2. The contact lens 6 is located between the first membrane 1 and the sponge block 41. The sponge block 41 protects the contact lens 6 and provides a wet storage environment. After the user opens the packaging, because the contact lens 6 has a certain sagging height and a certain degree of flexibility and elasticity, the contact lens 6 will automatically return to its normal state. At the same time, as the packaging is opened, the sponge block 41 will gradually expand, pushing the contact lens 6 out, making it convenient for the user to remove the contact lens 6.

[0060] In Example 1, the support is a sponge block 41 that can absorb and preserve liquid, while in Example 2, the support is a sheet plate 42 with multiple orderly arranged liquid-permeable holes. It is not difficult to understand that the support is not limited to these two forms. As examples rather than limitations, the support can also be a deformable component made of sponge, foam, silicone, plastic, etc., and multiple liquid-permeable holes can be formed on these flexible components, preferably arranged in an orderly manner.

[0061] Furthermore, in the above embodiments, the contact lens 6 may be a corneal contact lens, a scleral contact lens, or a contact lens; wherein, the corneal contact lens may be a soft corneal contact lens, a rigid corneal contact lens, or a hybrid corneal contact lens, and the rigid corneal contact lens may include a rigid non-permeable corneal contact lens, a rigid permeable corneal contact lens, or an orthokeratology lens.

[0062] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A contact lens wet package, characterized by, The contact lens storage device comprises a first film (1), a second film (2), and a support; The first film (1) and the second film (2) are opposite to each other, and the second film (2) is recessed towards a side away from the first film (1) to form a receiving cavity (5) for placing a contact lens (6) and filling lens storage solution; The support is arranged in the receiving cavity (5) to support the contact lens (6) and keep it placed in a convex manner towards the opening side of the receiving cavity (5); At least the part of the first film (1) and the second film (2) surrounding the opening periphery of the receiving cavity (5) is sealingly connected, thereby forming a sealing surface (3).

2. The contact lens wet package of claim 1, wherein, The second film (2) is a multi-layer composite film comprising a nylon layer, a polyurethane-based adhesive layer, a soft aluminum foil, and a heat-seal coating layer, and has plasticity; and the sealing surface (3) is formed by the first film (1) and the second film (2) via heat sealing.

3. The contact lens wet package of claim 1, wherein, The support is a deformable part made of any one of sponge, foam, silica gel, and plastic.

4. The contact lens wet package of claim 1 or 3, wherein, The side of the support opposite to the first film (1) is a curved surface matched with the back surface of the contact lens (6).

5. The contact lens wet package of claim 1 or 3, wherein, The depth of the receiving cavity (5) is less than or equal to 1.5 mm, and the contact lens (6) is in a compressed state.

6. The contact lens wet package of claim 1, wherein, A plurality of liquid-permeable holes (421) are arranged on the support.

7. The contact lens wet package of claim 6, wherein, The plurality of liquid-permeable holes (421) are arranged in a concentric circle or a vortex shape.

8. The contact lens wet package of claim 6, wherein, The liquid-permeable holes (421) comprise circular holes and strip-shaped holes arranged on the outer periphery of the circular holes, and the length direction of the strip-shaped holes coincides with the radial direction of the circular holes.

9. The contact lens wet package of claim 1, wherein, The sealing surface (3) comprises at least one sharp corner (31), and the tip of the sharp corner (31) is directed away from the receiving cavity (5).

10. The contact lens wet package of claim 1, wherein, The support is a sponge block (41), and the voids of the sponge block (41) are filled with the lens storage solution.

11. The contact lens wet package of claim 6, wherein, The support is a sheet-shaped plate (42), and a plurality of liquid-permeable holes (421) are arranged on the sheet-shaped plate (42).

12. The contact lens wet package of claim 1, wherein, The contact lens (6) is a corneal contact lens or a scleral contact lens, wherein the corneal contact lens is a soft corneal contact lens, a hard corneal contact lens, or a hybrid corneal contact lens, and the hard corneal contact lens comprises a hard non-breathable corneal contact lens, a hard breathable corneal contact lens, or a corneal molding lens.

13. The contact lens wet package of claim 1 or 12, wherein, The contact lens (6) is a contact lens.

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