JPH0661780U - Case for intraocular lens - Google Patents

Abstract

(57) [Summary] [Purpose] Without damaging or losing the intraocular lens,
Provide an intraocular lens case that can be easily attached and detached. [Structure] An upper lid ring 5 for fitting a lid portion 3 is formed on an upper surface of a main body 2, and a central upper surface of the upper lid ring 5 is
A storage stand 7 for mounting the intraocular lens L is formed, and a support column 9 for preventing the lens L from being displaced is formed on the periphery of the storage stand 7 to prevent the lens L from shifting. Part 3
A jetty 11 having a notch penetrating the inside and outside thereof is formed in a portion of the ceiling surface corresponding to the optical portion of the lens L.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a case for an intraocular lens. More specifically, the present invention relates to a case for an intraocular lens that can be stored and handled without damaging the intraocular lens.

[0002]

[Prior art]

 Conventionally, as a case for housing an intraocular lens, there is one disclosed in Japanese Utility Model Laid-Open No. 2-65913.

As shown in FIG. 7, in this case 51, a storage table 52 for mounting the intraocular lens L 1 in the storage chamber and a support column 53 for holding the intraocular lens L 3 are provided around the storage table 52. An annular jetty 55 is formed on the lid portion 54 at a position facing the optical portion of the intraocular lens L.

Then, the intraocular lens L is placed in such a state that the supporting portion S thereof wraps around the outer periphery of the supporting column 53 as shown in FIG. 7, for example.

However, the support column 53 stands vertically from the bottom surface of the storage chamber 56, and the jetty 55 of the lid portion 54 has a continuous annular shape and does not have a cutout or the like.

[0006]

[Problems to be solved by the device]

 In the conventional case 51, since the supporting column 53 stands vertically, the supporting portion S is easily caught when the intraocular lens L is attached or detached, and as a result, it may be damaged. Further, when the intraocular lens L repeatedly rotates in the case 51 due to vibration during transportation, the reaction force from the support column 53 almost acts to bend the support portion S of the intraocular lens L, and thus the damage occurs. It's easy to do.

Further, since the jetty 55 of the lid portion 54 has a continuous annular shape, the contact area thereof is large when contacting the intraocular lens L. Therefore, when static electricity is generated due to vibration or the like, the intraocular lens L may be attracted to the jetty 55 when the lid is opened, or may be lifted and jumped out and lost.

The present invention has been made to solve such a problem, and an object of the present invention is to provide an intraocular lens case that can be easily attached and detached without damaging or losing the intraocular lens.

[0009]

[Means for Solving the Problems]

 An intraocular lens case of the present invention is an intraocular lens case including a container part and a lid part for closing an upper part of the container part, wherein the container part mounts the intraocular lens. And a support column projecting from the periphery of the storage table, and the lid part has a ring-shaped projection at a portion corresponding to the optical part of the intraocular lens mounted on the storage table. The storage base is formed with a groove passing through the center thereof, and the outer surface of the support column is substantially the center of the storage base from the bottom surface portion of the container portion to the upper end thereof. It is inclined in the direction, and the jetty has a notch that penetrates the inside and outside thereof.

It is preferable that at least one degassing hole is formed in a portion of the container portion other than the storage base and / or a portion of the lid portion that does not face the storage base.

Further, the container portion is provided with an upper lid ring that constitutes a bottom portion of the container portion, and the upper lid ring has an engaging portion on a peripheral side portion thereof that can engage with a lower end edge of the lid portion. Moreover, it is preferable to have a recess formed integrally with the groove on the upper surface thereof.

[0012]

In the case of the intraocular lens case (hereinafter, simply referred to as the case) of the present invention, since the outer surface of the support column is inclined toward the center of the storage base, the intraocular lens (hereinafter simply referred to as the lens) is When the support section is placed on the storage table from above with the support section wrapping around the support pillar, the support section is unlikely to be caught by the support pillar. Therefore, the lens can be smoothly housed without damaging (the support part thereof at all). Similarly, when the lens is taken out, the support part is not easily caught. Also, even if the intraocular lens rotates due to vibration during transportation of the case, most of the reaction force from the supporting column that is applied to the support part is converted into the force that pushes up the lens, so that the support part is supported. No large bending force is applied.

In this way, when the case is transported or the lens is attached or detached, the support portion is always well protected, so that the damage is prevented.

On the other hand, since the ring-shaped jetty formed in the lid part has a notch, even if the lower edge of the ring repeatedly contacts the optical part of the lens due to vibration and static electricity is generated, the contact area is small. Because it is small, it is difficult for the lens to adsorb. Therefore, when the lid is opened, the lens will not be pulled up and jump out.

[0015]

【Example】

 Next, the case of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view before assembly showing an embodiment of the case of the present invention, FIG. 2 is a plan view showing the main body of the case of FIG. 1, and FIG. 3 is a cover part of the case of FIG. 4 is a partially cutaway plan view of the case of FIG. 1 after assembly, FIG. 5 is a sectional view taken along line VV of FIG. 2, and FIG. 6 is a sectional view taken along line VI-VI of FIG.

In FIG. 1, reference numeral 1 is a case, which is composed of a main body 2 and a lid portion 3. The main body 2 has a rectangular plate shape, on its bottom surface, legs 4 are formed along the side edges of the main body 2, and on the upper surface, an upper lid ring 5 for engaging the lid portion 3 is formed. There is.

As shown in FIG. 2, the upper lid ring 5 is provided with a pair of fan-shaped bases arranged so that their essential portions face each other. In other words, two thin fan-shaped grooves 6 extending from the center toward the outer peripheral edge are formed on the circular base along the longitudinal direction of the main body 2. When the lens L mounted on a storage base 7 described later is taken out, a groove (not shown) is provided between the upper surface of the main body 2 and the optical portion of the lens L so that the lens L is not damaged. It is provided so that it can be smoothly inserted. Further, the lid portion 3 is locked to the upper lid ring 5, but in order to ensure the reliable locking, the number of the grooves is preferably 2 to 4, and the number of the grooves in the circumferential portion of the upper lid ring is preferably set. The width is preferably 3 to 10 mm. The position of the upper lid ring 5 on the main body 2 is not particularly limited, but as shown in FIGS. 1 to 2 and 4, the fitted lid portion 3 is separated from the central portion within a range that does not protrude from the main body 2. It is convenient for the user to set it in the open position.

On the lower portion of the side surface of the upper lid ring 5, there are formed four engaging recesses with which engaging claws 3a of a lid portion 3 described later can engage. Each recess is composed of two recesses 5b and 5c sandwiching one chevron 5a.

A storage stand 7 for mounting the lens L is formed on the central upper surface of the upper lid ring 5. The positional relationship between the upper lid ring 5 and the storage base 7 is clear from FIGS. The storage stand 7 has a cylindrical shape, and its center hole 8 reaches the upper surface of the main body 2. Since the diameter of the optical portion of the lens L is generally about 5.0 to 7.0 mm, the diameter of the storage stand 7 is set to about 5.2 to 7.2 mm, which is slightly larger than that. In addition, the height of the receiving table 7 is set to at least 1 mm from the upper surface of the upper lid ring 5, so that the supporting portions at various angles (angles formed by the lens optical portion surface and the supporting portion surface) can be formed. The lens it has can be stored.

The groove 6 of the upper lid ring 5 is extended so as to cut a part of the storage base 7 to form a cut 6a. The width of the cut 6a is preferably 1 to 3 mm in consideration of the sterilizing gas passing property, the ease of taking out the lens L, and the safety of the lens L.

On the outer peripheral surface of the storage table 7, four support columns 9 for preventing displacement of the mounted lens L are provided so as to project upward. Each of the supporting columns 9 has a substantially semicircular shape whose cross section is out of a circular arc (see FIGS. 1 and 2), and the outer surface 9a is inclined toward the upper end toward the center of the storage table 7 ( See FIGS. 5-6). In other words, it becomes thinner toward the upper end.

The shape of the support column is not particularly limited to the semicircular cross section. In short, the inner surface side has a shape that allows the optical part of the lens L to be taken in and out, and the displacement can be prevented, and the outer surface side may have a shape in which the circumscribed circle of all the supporting columns is tapered upward with an appropriate inclination. .

Further, the number of supporting columns is not particularly limited as long as it is 2 or more, but for the above-mentioned purpose, it is preferably 3 or more, and the number of the grooves 6 can be formed.

The main body 2 is provided with two exhaust gas holes 10 (see FIGS. 1-2 and 4). The gas vent hole 10 is for purging the gas, such as air, when the lens L and the vicinity of the storage table 7 are sterilized by EO gas (ethylene oxide gas). Further, the gas vent hole 10 is formed at a portion separated from the upper lid ring 5 in this embodiment so that foreign matter does not enter there through to contaminate or damage the optical portion of the lens L. However, it is not limited to this portion and may be formed in the lid portion 3. In short, as long as the lens L is prevented from being contaminated or damaged as described above, it may be a part that is not included in the storage table 7 and a part facing the storage table 7. In addition, various shapes such as a slit shape and a circular shape can be selected as the shape of the gas vent hole. The shape that can be easily formed is a slit shape, and it is preferably an arc shape having a width of 1 to 3 mm and a length of 8 to 12 mm, depending on exhaust gas conditions such as time and temperature. Further, if such an arc slit-shaped gas vent hole 10a is bored at a portion (shown by a chain double-dashed line in FIG. 2) along the outer peripheral edge of the upper lid ring 5 on the main body 2, for example, even when the EO gas is filled, It is more preferable because the degree of contact is improved. The circular gas vent hole 10 and the slit-shaped gas vent hole 10a in FIG. 2 may be formed together. In the case of a circular shape, its diameter is preferably about 2 to 6 mm, though it depends on the exhaust gas conditions. The number of gas vent holes is also not limited as long as it is a range in which exhaust gas action can be sufficiently exerted.

Next, the lid portion 3 will be described with reference to FIGS. 1 and 3.

The lid portion 3 has a bottomed rectangular tubular shape, and the above-described engaging claws 3 a are formed on the inner sides of the four sides of the opening. At the center of the inner ceiling surface, a cylindrical jetty 11 for preventing the lens L mounted on the storage table 7 from projecting is formed. The height of the jetty 11 may be set so that the distance (D in FIG. 6) between the end face of the jetty 11 and the end face of the storage stand 7 is about 1.2 mm when the lid 3 is fitted to the upper lid ring 5. In the jetty 11, four notches 12 are formed at equal intervals on the circumference. By providing the notch 12, it becomes difficult for the optical portion of the lens L to be attracted to the end surface of the jetty 11. The number of notches 12 is preferably 2 to 4, and the width thereof is preferably about 1 to 3 mm.

4 and 6 show a state in which the lid portion 3 is fitted to the upper lid ring 5.

When the lid portion 3 is fitted on the upper lid ring 5, the lid portion 3 is put on the upper lid ring 5 so that the engaging claw 3 a is located at the position A shown in FIG. When it is rotated in the B direction, the engaging claws 3a enter into the recesses 5b, get over the projections 5a, and fit into the recesses 5c at the back. In this way, the lid part 3 does not come off easily, and as shown in FIG. 6, the jetty 11 of the lid part 3 prevents the lens L from jumping out of the storage base 7.

In the present embodiment, the lid portion 3 is detachable from the main body 2 with one touch, but the present invention is not particularly limited to that, and for example, screw fastening or hinge coupling. Means may be used, and the lid portion and the hinge portion made softer by making the body thinner may be integrally formed from the same material.

As a material for the above case, for example, a synthetic resin such as styrene resin or polypropylene is preferable in that good transparency and degassing property can be obtained. Also, from these materials, as described above, the main body and the lid are covered. When the hinge portion and the hinge portion are integrally formed, there is also an advantage that the hinge portion is provided with appropriate flexibility and elasticity.

[0032]

[Effect of device]

 According to the case of the present invention, the work of storing and taking out can be easily performed without damaging the lens. Furthermore, the damage and breakage of the lens when stored in the case, and the pop-out of the lens when the lid is opened are greatly reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view before assembly showing an embodiment of a case of the present invention.

FIG. 2 is a plan view showing a main body of the case shown in FIG.

FIG. 3 is a bottom view showing a lid portion of the case of FIG.

4 is a partially cutaway plan view of the case of FIG. 1 after assembly.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a cross-sectional view of essential parts showing an example of a conventional case.

[Explanation of symbols]

 1 Case 2 Main Body 3 Lid Part 5 Upper Lid Ring 6 Groove 7 Storage Base 9 Support Column 10 Gas Venting Hole 10a Gas Venting Hole 11 Jetty 12 Notch L Lens

Claims (3)

[Scope of utility model registration request] 1. An intraocular lens case comprising a container part and a lid part for closing an upper part of the container part, wherein the container part is a storage table for mounting the intraocular lens. ,
And a support column protruding from the periphery of the storage base, wherein the lid portion has an annular protrusion at a portion corresponding to the optical portion of the intraocular lens installed in the storage base, In the storage base, a groove passing through the center thereof is formed, and the outer surface of the support column is inclined substantially toward the center of the storage base from the bottom surface portion of the container portion toward the upper end thereof, The intraocular lens case, wherein the jetty has a notch that penetrates the inside and outside thereof. 2. The intraocular lens according to claim 1, wherein at least one gas vent hole is formed in a portion of the container portion other than the storage base and / or a portion of the lid portion that does not face the storage base. Case. 3. The container portion is provided with an upper lid ring that forms a bottom portion thereof, and the upper lid ring has an engaging portion on a peripheral side portion thereof that can engage with a lower end edge of the lid portion, And a recess formed integrally with the groove on the upper surface thereof.
The intraocular lens case described.