JP5225641B2 - Soft contact lens package - Google Patents

Description

  The present invention relates to a soft contact lens package used when storing a soft contact lens.

  2. Description of the Related Art Conventionally, contact lenses are provided that are attached to the surface of the cornea for the purpose of correcting myopia, hyperopia, astigmatism, presbyopia, and the like.

  Such a contact lens is often provided in a sealed container for the purpose of preventing damage in the process from the manufacturer to the customer and preventing contamination by germs. In particular, the soft contact lens is used in a swollen state softened with moisture, and is provided to consumers in a state of being immersed in a preserving solution contained in a container. .

  In addition, since the soft contact lens needs to contain moisture as described above, it is necessary to store the soft contact lens in a state where it is immersed in a storage solution stored in a container when it is not worn.

  Therefore, when wearing a soft contact lens, it is necessary to open the container in which the storage solution is stored and take out the soft contact lens immersed in the storage solution. However, since the preservation solution is stored in a large amount in order to immerse the soft contact lens, the preservation solution may leak due to vibration or the like when the container is opened. Therefore, when opening the container, there is a problem that attention must be paid to the surroundings, particularly in places other than the washroom.

  Therefore, in Patent Documents 1 to 4, a contact lens package is proposed in which a sponge soaked with a storage solution and a contact lens are accommodated together.

  However, in the contact lens package described in Patent Document 1 and Patent Document 2, when the package is opened, the front surface of the contact lens is received in a concave recess formed in a spherical recess formed in a sponge. Therefore, when removing the contact lens from the package, it must be picked by touching the rear surface of the contact lens that is in direct contact with the cornea when worn, and the rear surface of the contact lens is contaminated by finger dirt before use. There was a problem of being.

  Further, in the contact lens packages described in Patent Documents 1 to 4, since the contact lens is accommodated in the recess formed in the sponge, the contact lens is stored when the contact lens is taken out from the package. There is a risk that the contact lens may rotate in the recess formed in the sponge or be turned upside down. When the contact lens is rotated in the recess and the rear surface is directed upward, the finger is more likely to touch the back surface of the contact lens when opening and removing. In addition, when the contact lens is reversed, it is difficult to distinguish the front and back of the contact lens, and there is a problem that it is more difficult to correctly attach the contact lens.

Special table 2003-521737 gazette US Pat. No. 6,138,312 International Publication No. 2006/102384 Pamphlet US Patent Application Publication No. 2006/54514

  Here, the present invention has been made in the background as described above, and the problem to be solved is that the stored liquid stored by vibration during opening is spilled. It is an object of the present invention to provide a soft contact lens package having a novel structure that can be avoided and can be taken out without polluting the rear surface.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

The soft contact lens package according to the present invention accommodates a sponge-like support impregnated with a preservative solution in a package that is hermetically sealed so as to form a spherical convex support surface on the sponge-like support. by superimposing the rear surface of the spherical concave soft contact lenses by allowed to accommodate soft contact lens with respect to the supporting surface, in a state where the package is sealed, the sponge-like support is accommodated in a compressed state, while the soft contact lens in the package said preservative solution is oozing from the sponge-like support such compression is wetted, the sponge-like support by the package is opened is Rise et al Nde, In the opened package, the support surface protrudes upward from the upper surface around the sponge-like support. In, that it is to the preservation solution that has exuded by the compression of the sponge-like support is absorbed in the sponge-like support bulging, characterized.

  In such a soft contact lens package structured according to the present invention, a sponge-like support impregnated with a preservative solution is contained in the package. It is possible to prevent the storage liquid from spilling.

  In the present invention, the soft contact lens is accommodated in the package in a state where the spherical concave support surface formed on the sponge-like support is overlapped with the spherical concave rear surface of the soft contact lens. Therefore, when the soft contact lens is taken out, it is possible to make the finger touch the front surface of the soft contact lens. Thereby, when taking out a soft contact lens from a package, it becomes possible to avoid advantageously that the back surface of a soft contact lens is soiled.

  In addition, the preservation solution in the present invention includes not only a preservation solution exhibiting only a preservation action but also various preservation solutions that exhibit a washing / sterilizing action and a sterilizing / disinfecting action in addition to the preservation action. .

  The sponge-like support in the present invention is a porous elastically deformable material having a large number of voids (holes) formed therein, and when immersed in a liquid, it replaces the air in the holes. In the meantime, it is desirable to absorb and hold the liquid and to have a characteristic of easily discharging the sucked liquid when an external force is applied. In this regard, as the raw material for the sponge-like support of the present invention, synthetic resin materials such as polyurethane and various rubber materials such as synthetic rubber can be employed, but the heat resistance, pressure resistance, chemical resistance, etc. From the viewpoint, chloroprene rubber, ethylene propylene rubber, silicone rubber and the like are preferably employed. In addition, as a method for producing the sponge-like support of the present invention, conventionally known methods for producing sponges can be employed.

Further, in the present invention, since in the state where the package is sealed while the sponge-like support is accommodated is compressed, so that the sponge-like support is inflated by the package is opened, the package It becomes possible to make the whole size of the soft contact lens package in a sealed state compact.

  Furthermore, in the present invention, it is desirable that a liquid reservoir recess for storing the storage liquid is provided at a portion where the sponge-like support is disposed in the package when the package is opened. As a result, even if the preservation liquid impregnated from the sponge-like support is oozed out by applying an external force when the package is opened, the preservation liquid oozed from the sponge-like support is received by the liquid reservoir recess. Is possible. As a result, it is possible to more effectively avoid spilling of the storage solution when the package is opened.

  Therefore, in the case of adopting the above-described configuration, the volume of the liquid reservoir recess is determined by the volume of the storage liquid that exudes from the sponge-like support when the impregnated sponge-like support before compression is compressed in a sealed package. It is desirable to set it to the above size. As a result, the storage liquid that has oozed out from the sponge-like support does not accumulate and overflow from the concave portion. As a result, when the package is opened, it is possible to more advantageously avoid the storage liquid spilling.

Further, when the liquid reservoir recess is provided as described above, it is desirable that a positioning recess for positioning the sponge-like support is provided in the package, and that the liquid reservoir recess protrudes from the positioning recess in the package. Thereby, it becomes possible to secure a larger volume of the liquid reservoir recess.

  Furthermore, in the present invention, the package is constituted by a pair of package constituent members that are superposed and fixed in close contact with each other, and one of the pair of package constituent members has a spherical convex front surface of the soft contact lens. It is comprised by the film to cover, You may make it peel this film from the other of a pair of package structural member, and may open a package. In this case, since one of the pair of package constituent members is formed of a film, the thickness dimension of the soft contact lens package in a state where the package is sealed can be reduced. As a result, it is possible to reduce the overall size of the soft contact lens package with the package sealed.

  Therefore, when the configuration as described above is adopted, it is desirable that the film is in contact with the spherical convex front surface of the soft contact lens in a state where the package is sealed. This makes it possible to further reduce the thickness dimension of the soft contact lens package when the package is sealed. As a result, the overall size of the soft contact lens package with the package sealed can be further reduced.

In the present invention, the package may be constituted by a container body provided with a positioning recess in which a sponge-like support is disposed, and a lid that covers the opening of the positioning recess in a fluid-tight manner. Thereby, when the package is sealed, the sponge-like support can be easily positioned and held at a predetermined position.

  In the case of adopting such a configuration, it is desirable that the lid is in contact with the spherical convex front surface of the soft contact lens in a state where the package is sealed. Thereby, the position shift of a soft contact lens can be suppressed. In addition, the thickness of the soft contact lens package with the package sealed can be reduced, and the overall size of the soft contact lens package with the package sealed can be reduced.

  Moreover, when a package is comprised with a container main body and a cover body as mentioned above, it is desirable that the container main body is formed with the hard material. Thereby, even when force is applied to the container body when the package is opened, it is possible to advantageously avoid deformation of the container body, particularly deformation of the recess formed in the container body. As a result, it is possible to avoid spilling the storage solution when opening the package.

  The hard material in the present invention refers to a material having a strength capable of maintaining the shape of the recess when an external force is applied, such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, and the like. Hard synthetic resin materials can be used.

  Furthermore, in the present invention, it is desirable that the back surface of the package be an adhesion preventing surface that prevents the adhesion of the soft contact lens. Thereby, when the package is opened, it is possible to prevent the soft contact lens from adhering to the back surface of the package.

  Therefore, the adhesion preventing surface of the present invention can be realized, for example, by making the back surface of the package an uneven surface or by making the back surface of the package a hydrophobic surface. In addition, as a method of making the back surface of the package an uneven surface, it can be realized, for example, by applying a satin finish or an embossing to the back surface of the package. In addition, the method of making the back surface of the package a hydrophobic surface can be realized by forming the back surface of the package itself with a material having hydrophobicity, or performing a hydrophobic process on the back surface of the package.

  Further, in the present invention, in a state where the package is opened, a portion of the sponge-like support opposite to the side where the support surface is formed may be fixed to the package. In this case, when the package is opened, it is possible to prevent the sponge-like support from dropping from the package.

  Furthermore, the soft contact lens package of the present invention may be used as a distribution case used when the soft contact lens is distributed in the market.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIGS. 1 to 6 show a soft contact lens package 10 as a first embodiment of the present invention.

  More specifically, the soft contact lens package 10 according to the present embodiment includes a package 16 including a container body 12 and a lid body 14. The container body 12 is made of a hard synthetic resin material such as polyethylene, polypropylene, polyvinyl chloride, or polyethylene terephthalate, cellulose, or the like, and has a thick rectangular plate shape as a whole.

  In addition, as shown in FIGS. 4 to 6, the container body 12 of the present embodiment is formed with a positioning recess 18 as a recess that opens toward one surface in the thickness direction. In particular, in the present embodiment, the positioning recess 18 is positioned substantially at the center of the container body 12 and has an opening formed in a substantially constant circle.

  Furthermore, the container body 12 of the present embodiment is formed with a pair of liquid reservoir grooves 20 as liquid reservoir recesses that open into the positioning recess 18 on the bottom wall of the positioning recess 18. In particular, in the present embodiment, the pair of liquid storage grooves 20, 20 extend in parallel with each other on both radial sides across the center of the circular positioning recess 18, and both lengthwise ends of each liquid storage groove 20. However, both extend from the positioning recess 18 to the outer peripheral side.

  On the other hand, the lid body 14 of the present embodiment is formed of a synthetic resin film on which aluminum is deposited. In addition, as a synthetic resin material used as a film forming material, for example, polypropylene, polyethylene, ethylene vinyl acetate resin, ethylene ethyl acrylate, ethylene acrylic acid resin, polyester, or the like can be employed. Further, the synthetic resin film may have a single layer structure or a multilayer structure. Furthermore, it is also possible to employ a synthetic resin film on which aluminum is not deposited as the lid 14.

  Therefore, a fluororesin is applied to the back surface of the lid body 14 of the present embodiment, whereby the back surface of the lid body 14 is a hydrophobic surface as an adhesion preventing surface. As a result, when the lid 14 is peeled off from the container main body 12 and the package 16 is opened as described later, it is advantageously avoided that the soft contact lens 26 described later adheres to the back surface of the lid 14. It becomes possible.

  A support base sponge 22 as a sponge-like support is disposed in the positioning recess 18 of the container body 12. This support base sponge 22 is formed of a rubber sponge, and in this embodiment, in particular, in order to obtain heat resistance and pressure resistance, it is formed of a foam molded body such as chloroprene rubber, ethylene propylene rubber, or silicone rubber. . In addition, the support base sponge 22 of this embodiment has open cells, and thereby, elasticity and liquid permeability are largely ensured. The rubber sponge having open cells is, for example, Japanese Patent Application Laid-Open No. 2005-89611, Japanese Patent Application Laid-Open No. 2002-12696, Japanese Patent Application Laid-Open No. 6-107865, Japanese Patent Publication No. 5-54858, Japanese Patent Publication No. 5-79250. It can be obtained by a conventionally known production method described in Japanese Patent Publication No. Gazette.

  Further, the support base sponge 22 of the present embodiment has a shape in which a protrusion having a spherical convex curved surface 24 is integrally provided from the upper end surface of the base end portion having a thick disk shape, The spherical convex curved surface 24 constitutes a spherical convex support surface. In the present embodiment, the radius of curvature of the central portion of the spherical convex curved surface 24 is substantially constant, thereby forming a support surface that stably supports a soft contact lens 26 described later. .

  The support base sponge 22 having such a shape is fitted with a base end portion into the positioning recess 18 provided in the container body 12 in a state in which the storage solution 32 composed of physiological saline or the like is soaked. By being fixed, it is arranged so as to protrude from the positioning recess 18 toward the opening direction.

  The spherical concave rear surface 28 of the soft contact lens 26 is superimposed on the spherical convex curved surface 24 of the support base sponge 22 with the support base sponge 22 arranged in the positioning recess 18 in this manner. Thus, a soft contact lens is supported. The soft contact lens may be a hydrous soft contact lens formed of HEMA (hydroxyethyl methacrylate), N-VP (N-vinylpyrrolidone), DMAA (dimethylacrylamide), glycerol methacrylate (GMA), or the like. Further, it may be a non-hydrous soft contact lens formed of silicon rubber, butyl acrylate, dimethylsiloxane or the like.

  Further, the lid body 14 is overlapped and combined from the outside with the rear surface 28 of the soft contact lens 26 overlapped with the curved surface 24 of the support base sponge 22 in this way. The outer peripheral edge portion of the lid body 14 is fixed to the upper outer peripheral edge portion of the container body 12 by heat welding, ultrasonic welding, or the like. As a result, the positioning recess 18 of the container body 12 is fluid-tightly covered with the lid body 14 to form a sealed package 16 that accommodates the support base sponge 22 on which the soft contact lens 26 is superimposed. The soft contact lens 26 is shipped after a predetermined sterilization process is performed in this state.

  In the present embodiment, in the package 16 sealed as described above, the support base sponge 22 includes the soft contact lens 26 superimposed on the curved surface 24, and the height direction (thickness direction) by the lid body 14. By being pressed down, the package 16 is accommodated in a compressed state in the height direction. In particular, in the present embodiment, the lid 14 is affixed substantially flat along the upper surface of the container body 12 in such a state that the support base sponge 22 is compressed and accommodated in this manner, whereby the package 16 is attached. As a whole, it has a substantially flat plate shape.

  Further, as the support base sponge 22 is compressed as described above, the storage liquid 32 that has been infiltrated into the support base sponge 22 oozes out from the support base sponge 22 and is stored in the liquid storage grooves 20 and 20. It has become. In the present embodiment, the volume of the liquid storage grooves 20 and 20 is set to be larger than the volume of the storage liquid 32 that exudes from the support base sponge 22 in a state where the support base sponge 22 is compressed.

  The soft contact lens package 10 having the above-described structure is separated from the container body 12 by opening the film-shaped lid 14 and the package 16 is opened, as shown in FIGS. The compressed support base sponge 22 expands due to elasticity and supports the soft contact lens 26 in a mounted state. In this state, the soft contact lens 26 is taken out.

  In the soft contact lens package 10 having the above-described structure, since the preservation liquid 32 is infiltrated into the support base sponge 22, the preservation liquid 32 is prevented from spilling when the package 16 is opened. Is possible.

  In the present embodiment, since the liquid storage grooves 20 are formed on the bottom wall of the positioning recess 18 where the support base sponge 22 is disposed, the storage liquid 32 is spilled when the package 16 is opened. Can be effectively prevented.

  In particular, since the liquid storage grooves 20 and 20 are formed so as to protrude from the positioning recess 18 and extend outward, a sufficiently large volume of the liquid storage grooves 20 and 20 can be secured and the lid is opened. It is possible to more effectively prevent the storage solution 32 from spilling out.

  Furthermore, in this embodiment, since the container body 12 is formed of a hard synthetic resin material, even if a force is applied to the container body 12 when the package 16 is opened, the deformation of the container body 12, particularly It becomes possible to reduce or prevent the deformation of the positioning recess 18. Thereby, when the package 16 is opened, the storage liquid 32 can be more effectively prevented from spilling.

  Further, in the soft contact lens package 10 having the structure as described above, when the package 16 is opened, the rear surface 28 is superimposed on the curved surface 24 formed on the support sponge 22 when the soft contact lens 26 is opened. Therefore, the soft contact lens 26 can be taken out by touching the front surface 30 with a finger. Accordingly, it is possible to take out the soft contact lens 26 without soiling the rear surface 28 by avoiding the contact of the fingers with the rear surface 28 of the soft contact lens 26 when the soft contact lens 26 is taken out.

  Furthermore, in this embodiment, while the package 16 is sealed, the support base sponge 22 is compressed and accommodated in the package 16, while the support base sponge 22 expands when the package 16 is opened. Therefore, the overall size of the soft contact lens package 10 in the unopened state can be reduced.

  Accordingly, the soft contact lens package 10 of the present embodiment is accommodated when the soft contact lens 26 is distributed in the market, that is, when the manufacturer ships the soft contact lens 26. When used as a case, the storage location can be small and the distribution cost can be reduced. Also, the user can carry the unopened soft contact lens package 10 in a pass case or the like, for example. In use, the support base sponge 22 swells by opening and lifts the soft contact lens 26 upward, so that the soft contact lens 26 can be easily picked and excellent use performance is exhibited.

  In the present embodiment, the lid 14 is directly pressed against and pressed against the spherical convex front surface 30 of the soft contact lens 26 with the package 16 sealed. It becomes possible to further reduce the overall thickness size.

  Furthermore, in this embodiment, when the package 16 is opened, the base end portion of the support base sponge 22 is fitted and fixed in the positioning recess 18 of the container body 12, so that when the package 16 is opened, It is possible to prevent the support base sponge 22 from falling.

  Next, a soft contact lens package 34 as a second embodiment of the present invention will be described with reference to FIGS.

  The soft contact lens package 34 according to the present embodiment includes a package 40 in which a pair of films 36 and 38 are overlapped in close contact with each other and an outer peripheral edge portion is welded and fixed to form an accommodation space therein. . In particular, in the present embodiment, the pair of films 36 and 38 are connected in advance to form a single film. In addition, the formation material of each film 36 and 38 is formed with the material similar to the cover body (14) of 1st embodiment.

  Therefore, in the present embodiment, embossing is applied to the back surface central portion of one film 36, whereby the back surface central portion of one film 36 is formed as an uneven surface 42 as an adhesion preventing surface. Yes.

  In addition, as a method of embossing on the back surface of one film 36, for example, the film 36 is sandwiched between a pair of molds having at least one uneven surface, and the film 36 is heated while the film 36 is heated. By applying pressure to the film 36, the film 36 is formed by a method of transferring the unevenness of the uneven surface to the film 36, an embossing roll having unevenness formed on the surface, and a support roll disposed to face the embossing roll. In this state, a conventionally known embossing method such as a method of transferring irregularities to the film 36 by rotating the roll sandwiching the film 36 while heating the film 36 can be adopted. . The shape of the unevenness is not particularly limited as long as it can prevent the soft contact lens 48 from adhering to the back surface of one film 36 when the package 40 is opened as will be described later. Convex portions having an outer surface shape such as a shape, a truncated cone shape, a cylindrical shape, and a bowl shape may be arranged regularly or irregularly, or a concave portion having an inner shape such as a hemispherical shape or a cylindrical shape may be provided. It may be arranged regularly or irregularly.

  Further, the support base sponge 44 as the sponge-like support body of the present embodiment includes a spherical convex support surface 46 and has a disk shape as a whole. The support base sponge 44 is made of the same material as the support base sponge (22) of the first embodiment and has the same characteristics as the first embodiment.

  Such a support base sponge 44 has a flat bottom surface superimposed on the center of the back surface of the other film 38 and is fixed with an adhesive or the like as necessary. Then, one film 36 and the other film are soaked in a state in which the storage solution is soaked into the support sponge 44 and the spherical concave rear surface 50 of the soft contact lens 48 is superimposed on the spherical convex support surface 46. After the connecting portions of 38 are bent and the one film 36 is overlapped with the other film 38, the outer peripheral edge portions of the pair of films 36 and 38 are welded to form a sealed package 40. In this state, the soft contact lens 48 is supplied to the market.

  Here, in the present embodiment, the uneven surface formed in the center of the back surface of one film 36 with respect to the front surface 52 of the soft contact lens 48 in a state where the soft contact lens 48 is accommodated in the package 40 as described above. 42 comes close to or touches.

  Further, in the present embodiment, the support base sponge 44 is not substantially compressed in the height direction (thickness direction) with the soft contact lens 48 accommodated in the package 40 as described above. Is preferred.

  Then, the soft contact lens package 34 having the structure as described above is opened by peeling one film 36 from the other film 38, and the soft contact lens 48 is supported as shown in FIG. It appears in a state of being placed on the base sponge 44. In this opened state, the soft contact lens 48 is taken out.

  Therefore, in the soft contact lens package 34 having the above-described structure, the spherical concave portion of the soft contact lens 48 is opposed to the spherical convex support surface 46 formed on the support base sponge 44 containing the storage liquid. Since the soft contact lens 48 is accommodated in the package 40 in a state where the rear surface 50 of the shape is overlapped, the same effect as in the first embodiment can be obtained.

  Therefore, in the present embodiment, since the support base sponge 44 is not compressed in a state where the package 40 is sealed, a large amount of storage solution can be infiltrated into the support base sponge 44. Thereby, even when the storage period of the soft contact lens 48 is long, the soft contact lens 48 can be maintained in a swollen state.

  In the present embodiment, since the package 40 is constituted by the pair of films 36 and 38, the overall size of the soft contact lens package 34 can be reduced, and the portability of the soft contact lens package 34 is improved. It becomes possible.

  Furthermore, in this embodiment, the central portion of the back surface of one film 36 is an uneven surface 42, and the uneven surface 42 comes into contact with the front surface 52 of the soft contact lens 48. It is possible to advantageously avoid the soft contact lens 48 from adhering to the back surface of one of the films 36 when the is opened.

  Next, a soft contact lens package 54 as a third embodiment of the present invention will be described with reference to FIGS.

  In the soft contact lens package 54 of this embodiment, a pair of packages 60 each having a structure in which the opening of a container body 56 having a bottomed cylindrical shape is covered fluid-tightly by a cap 58 serving as a lid is provided on a support plate 62. The structure is made. In the present embodiment, the cap 58 is screwed to the container main body 56. Moreover, in this embodiment, the container main body 56 and the cap 58 which comprise each package 60 are each formed with synthetic resin materials, such as polyethylene, a polypropylene, a polyvinyl chloride, a polyethylene terephthalate.

  A support base sponge 64 as a sponge-like support is disposed inside the container body 56 of the package 60 having such a structure. The support base sponge 64 has a shape in which a spherical convex portion protruding upward is integrally formed on the upper end surface of the base end portion having a circular block shape, and thereby a spherical shape convex upward in the axial direction. A convex support surface 66 is formed. The support base sponge 64 of the present embodiment is made of the same material as the support base sponge (22) of the first embodiment, and has the same characteristics as the support base sponge (22) of the first embodiment. Have.

  Such a support base sponge 64 is arranged inside the container main body 56 such that the base end portion is superposed on the bottom wall of the container main body 56. Then, with the storage solution soaked in the support base sponge 64, the back surface 70 of the soft contact lens 68 is superimposed on the support surface 66 of the support base sponge 64, and then the cap 58 is screwed and fixed to the container body 56. As a result, the opening of the container body 56 is covered with the cap 58 in a fluid-tight manner to form a sealed package 60.

  In the present embodiment, with the package 60 sealed as described above, the cap 58 does not contact the front surface 72 of the soft contact lens 68, and a gap is formed between the cap 58 and the front surface 72 of the soft contact lens 68. Has been. Further, the support base sponge 64 is not compressed by the cap 58.

  In the soft contact lens package 54 having such a structure, the spherical concave shape of the soft contact lens 68 is opposed to the spherical convex support surface 66 formed on the support base sponge 64 containing the storage liquid. Since the soft contact lens 68 is accommodated in the package 60 in a state where the rear surface 70 is overlapped, the same effect as in the first embodiment can be obtained.

  In particular, the soft contact lens package 54 of the present embodiment is used as a storage case for storing the soft contact lens 68 when the soft contact lens 68 is not worn in daily life. When the soft contact lens 68 is not worn, maintaining the soft contact lens 68 in a swollen state can be advantageously realized.

  In this embodiment, since the support base sponge 64 is not fixed to the container body 56, the support base sponge 64 can be replaced. Thereby, when the support base sponge 64 becomes dirty, it is possible to clean the support surface 66 of the support base sponge 64 in contact with the rear surface 70 of the soft contact lens 68 by replacing the support base sponge 64. It becomes.

  The container body 56 may be filled with an amount of preserving liquid that cannot be absorbed by the support base sponge 64.

  Also in this embodiment, since the soft contact lens 68 is supported in a mounted state with the rear surface 70 superimposed on the support surface 66 of the support base sponge 64, the soft contact lens 68 is in a stable state in which front-back inversion is prevented. It can be preserved.

  Next, a soft contact lens package 74 as a fourth embodiment of the present invention will be described with reference to FIGS.

  In the soft contact lens package 74 of this embodiment, a pair of packages 80 each having a structure in which an opening of a container body 76 having a bottomed cylindrical shape is covered fluid-tightly by a cap 78 as a lid is provided on a support plate 82. The structure is made. In this embodiment, the cap 78 is assembled to the container main body 76 so as to be rotatable about one axis via the hinge 84, and a locking piece 86 provided on the cap 78 is provided on the container main body 76. The opening of the container main body 76 is covered with a cap 78 by being engaged with the locking protrusion 88. In this embodiment, the rubber packing 90 is disposed between the container main body 76 and the cap 78, and the rubber packing 90 is connected to the cap 78 with the opening of the container main body 76 covered with the cap 78 as described above. The container body 76 is held by pressure so that a sealed package 80 is formed. Furthermore, in this embodiment, the container body 76 and the cap 78 constituting each package 80 are each formed of a synthetic resin material such as polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate.

  A support base sponge 92 as a sponge-like support is disposed inside the container body 76 of the package 80 having such a structure. The support base sponge 92 has a shape in which a spherical convex portion projecting upward is integrally formed on the upper end surface of the base end portion having a circular block shape, and thereby a spherical shape convex upward in the axial direction. A convex support surface 94 is formed. The support base sponge 92 of the present embodiment is made of the same material as the support base sponge (22) of the first embodiment, and has the same characteristics as the support base sponge (22) of the first embodiment. Have.

  Such a support base sponge 92 is arranged inside the container main body 76 so that the base end portion is superposed on the bottom wall of the container main body 76. Then, with the storage solution soaked in the support base sponge 92, the rear surface 98 of the soft contact lens 96 is superimposed on the support surface 94 of the support base sponge 92, and then the opening of the container body 76 is covered with the cap 78. As a result, a sealed package 80 is formed.

  In the present embodiment, with the package 80 sealed as described above, the cap 78 does not contact the front surface 100 of the soft contact lens 96, and a gap is formed between the cap 78 and the front surface 100 of the soft contact lens 96. Has been. Further, the support base sponge 92 is not compressed.

  In the soft contact lens package 74 having such a structure, the spherical concave shape of the soft contact lens 96 is opposed to the spherical convex support surface 94 formed on the support base sponge 92 containing the storage liquid. Since the soft contact lens 96 is accommodated in the package 80 in a state where the rear surface 98 is overlapped, the same effect as in the third embodiment can be obtained.

  Next, a soft contact lens package 102 according to a fifth embodiment of the present invention will be described with reference to FIGS.

  In the soft contact lens package 102 of the present embodiment, a pair of packages 108 are provided on a support plate 110 in a structure in which an opening of a container body 104 having a bottomed cylindrical shape is covered fluid-tightly by a cap 106 as a lid. The structure is made. In the present embodiment, the locking recess 112 provided in the cap 106 is engaged with the locking piece 114 provided in the container body 104 so that the opening of the container body 104 is covered by the cap 106. It has become. As a result, a sealed package 108 is formed. In the present embodiment, the container body 104 and the cap 106 constituting each package 108 are each formed of a synthetic resin material such as polyethylene, polypropylene, polyvinyl chloride, and polyethylene terephthalate.

  A support base sponge 118 serving as a sponge-like support is disposed inside the container body 104 of the package 108 having such a structure. The support base sponge 118 has a shape in which a spherical convex portion protruding upward is integrally formed on the upper end surface of the base end portion having a circular block shape. As a result, the support base sponge 118 is formed with a spherical convex support surface 120 that is convex upward in the axial direction. The support base sponge 118 of the present embodiment is formed of the same material as the support base sponge (22) of the first embodiment, and has the same characteristics as the support base sponge (22) of the first embodiment. Have.

  Such a support sponge 118 is arranged inside the container main body 104 such that the base end portion is overlapped with the bottom wall of the container main body 104. Then, with the storage solution soaked in the support base sponge 118, the back surface 124 of the soft contact lens 122 is superimposed on the support surface 120 of the support base sponge 118, and then the cap 106 is fixed to the container body 104. The opening of the container main body 104 is covered with a cap 106 in a fluid-tight manner to form a hermetically sealed package 108.

  Therefore, in this embodiment, the cap 106 does not contact the front surface 126 of the soft contact lens 122 in a state where the package 108 is sealed as described above. That is, a gap is formed between the cap 106 and the front surface 126 of the soft contact lens 122. Further, the support base sponge 118 is not compressed.

  In the soft contact lens package 102 having such a structure, the spherical concave shape of the soft contact lens 122 with respect to the spherical convex support surface 120 formed on the support base sponge 118 containing the storage liquid. Since the soft contact lens 122 is accommodated in the package 108 with the rear surface 124 being overlaid, the same effect as in the fourth embodiment can be obtained.

  As mentioned above, although several embodiment of this invention has been explained in full detail, these are illustrations to the last, Comprising: This invention is not limited at all by the specific description in this embodiment. .

  For example, in the first embodiment, instead of the pair of liquid storage grooves 20, 20, a liquid storage hole 128 as a liquid storage recess may be provided as shown in FIGS. 15 and 16. . Here, the liquid reservoir hole 128 is opened with a smaller area than the bottom surface of the support base sponge 22, and in particular in FIGS. 15 and 16, the liquid reservoir hole 128 is opened with a circular cross section. The opening cross-sectional shape of the liquid reservoir hole 128 is not limited to a circular shape. For example, a polygonal shape such as a triangle or a quadrangle, an elliptical shape, a crescent shape, or a shape obtained by distorting these shapes may be used. Can also be adopted. 15 and 16, the depth dimension of the liquid reservoir hole 128 is constant. For example, the depth dimension is varied depending on the location, for example, the depth is gradually increased toward the center side. Anyway. In addition, in order to make an understanding easy, in FIG.15 and FIG.16, the code | symbol same as 1st embodiment is attached | subjected about the member and site | part similar to 1st embodiment.

  In the first embodiment, the bottom surface of the portion of each liquid reservoir 20 that extends to the outside of the positioning recess 18 may be an inclined surface that goes down toward the positioning recess 18. As a result, the storage liquid 32 that has exuded from the support base sponge 22 can be absorbed by the support base sponge 22 again.

  Furthermore, in the first embodiment, the bottom surface of each liquid storage groove 20 may be deepest at the center in the groove width direction.

  In the first to fifth embodiments, a sponge soaked with a storage solution may be brought into contact with the front surface of the soft contact lens while being sealed in a package. That is, a sponge impregnated with a preservative solution may be placed on the back surface of the lids 14, 36, 58, 78, and 106, or may be fixed and placed on the front surface of the soft contact lens. The sponge may be a thin sheet.

  In addition, although not listed one by one, the present invention can be carried out in a mode to which various changes, modifications, improvements and the like are added based on the knowledge of those skilled in the art. It goes without saying that all are included in the scope of the present invention without departing from the spirit of the present invention.

The perspective view which shows the soft contact lens package as 1st embodiment of this invention. Sectional drawing in the airtight state of the soft contact lens package. The perspective view which shows the state by which the cover body of the soft contact lens package was peeled. The top view which shows the state by which the cover body of the soft contact lens package was peeled. VV sectional drawing in FIG. VI-VI sectional drawing in FIG. The perspective view which shows the state by which the soft contact lens package as 2nd embodiment of this invention was opened. Sectional drawing which shows the sealing state of the soft contact lens package. The perspective view which shows the soft contact lens package as 3rd embodiment of this invention. Sectional drawing which shows the sealing state of the soft contact lens package. The perspective view which shows the soft contact lens package as 4th embodiment of this invention. Sectional drawing which shows the sealing state of the soft contact lens package. The perspective view which shows the soft contact lens package as 5th embodiment of this invention. Sectional drawing which shows the sealing state of the soft contact lens package. The top view which shows the other aspect of the liquid reservoir recessed part employable by 1st embodiment. XVI-XVI sectional drawing in FIG.

Explanation of symbols

10: Soft contact lens package, 16: Package, 22: Support sponge, 24: Curved surface, 26: Soft contact lens, 28: Rear surface, 32: Storage solution

Claims (13)

A sponge-like support impregnated with a preservative solution is accommodated in a package that is hermetically sealed so that a spherical convex support surface is formed on the sponge-like support, and a soft contact lens is formed on the support surface. By accommodating the back surface of the spherical concave shape to accommodate the soft contact lens,
In a state where the package is sealed, the sponge-like support is accommodated in a compressed state, the soft contact lens in said package from said sponge-like support according compressed exits the preservation solution stains wet While
The sponge-like support Nde Rise et al by the package is opened, together with the supporting surface than the upper surface of the surrounding the sponge-like support projects upwardly in the package has been opened, the sponge-like support The soft contact lens package is characterized in that the preservative solution exuded in the compressed state is absorbed by the swollen sponge-like support .   2. The soft contact lens package according to claim 1, wherein a liquid reservoir concave portion for storing the preservative liquid is provided at a portion where the sponge-like support is disposed in the package when the package is opened. 3.   The volume of the liquid reservoir recess is set to a size equal to or larger than the volume of the storage liquid that oozes out from the sponge-like support in a state where the package is sealed and the sponge-like support is compressed. 2. The soft contact lens package according to 2. A positioning recess for positioning the sponge-like support in the package is provided,
The soft contact lens package according to claim 2 or 3, wherein the liquid pool recess protrudes from the positioning recess in the package. A positioning recess for positioning the sponge-like support in the package is provided,
When the package is hermetically sealed, the sponge-like support is compressed and accommodated in the positioning recess, while the sponge-like support is expanded by opening the package, so that the spherical convex shape The soft contact lens package according to any one of claims 1 to 4, wherein a support surface of the projection protrudes upward from an opening surface of the positioning recess. The package is composed of a pair of package constituent members that are overlapped and fixed in close contact with each other, and one of the pair of package constituent members is composed of a film that covers the spherical convex front surface of the soft contact lens. The soft contact lens package according to any one of claims 1 to 5 , wherein the film is peeled off from the other of the pair of package constituent members to open the package. The soft contact lens package according to claim 6 , wherein the film is in contact with a spherical convex front surface of the soft contact lens in a state where the package is sealed. The package according to any one of claims 1 to 5 , wherein the package is constituted by a container main body having a positioning recess in which the sponge-like support is disposed and a lid that fluidly covers the opening of the positioning recess. Soft contact lens package according to item. The soft contact lens package according to claim 8 , wherein the lid is in contact with the spherical convex front surface of the soft contact lens in a state where the package is sealed. The soft contact lens package according to claim 8 or 9 , wherein the container body is formed of a hard material. The soft contact lens package according to any one of claims 1 to 10 , wherein a back surface of the package is an adhesion preventing surface for preventing the adhesion of the soft contact lens. While opening the package, software according to the any one of the better support surface is formed opposite the claims portion is fixed to the package 1 to 1 1 in the sponge-like support Contact lens package. Soft contact lens package according to any one of claims 1 to 1 2 is used as a distribution case used when the soft contact lenses are distributed in the market.

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