JPH0536430Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an intraocular lens case. More specifically, the present invention relates to a case that doubles as an intraocular lens storage case and a cleaning container.

[Prior Art] Before an intraocular lens is inserted into the eye, it is necessary to soak it once in physiological saline or Ringer's solution to clean the lens and improve its biocompatibility.

Conventionally, a single-function lens case was used that only had the function of storing an intraocular lens, but in that case, when the intraocular lens was removed from the lens case and inserted into the eye, a sterilized shear case was used. The intraocular lens must be prepared separately, filled with saline, and the intraocular lens immersed in it before the eye is inserted.

In this case, it is inconvenient to prepare a sterilized shear dish, and when transferring the intraocular lens to the shear dish or taking it from the shear dish to the eye, the intraocular lens, especially its loop, may be damaged.
There is a risk of inadvertent dropping it on the floor.

Therefore, the present applicant has provided a lens case that allows the intraocular lens to be cleaned without the need for a separate shear container, and that also reduces the risk of damage or falling (see Japanese Utility Model Application No. 157423/1983 ).

[Problem to be solved by the invention] However, since the lens case has a gas venting opening in the area that faces the storage stand when the lid is closed, foreign objects ( There is a problem that dirt, dust, etc.) can enter the intraocular lens and adhere to the intraocular lens.

In view of the above circumstances, it is an object of the present invention to provide an intraocular lens case that does not cause staining of the intraocular lens even if foreign matter enters after the lens is housed.

[Means for Solving the Problems] The intraocular lens case of the present invention includes a storage chamber formed in a recessed shape from a bottom and an outer frame erected around the bottom, and a storage chamber formed inside the storage chamber. The lid part, the outer frame, and the lid part in a part that does not face the storage table are provided with a storage table for placing an intraocular lens placed therein, and a lid part that can close the upper opening surface of the storage chamber. It is characterized in that at least one opening for degassing is formed at the bottom.

[Effect] Intraocular lenses are generally sterilized by ethylene oxide gas sterilization (hereinafter referred to as EO gas), but the gas must be removed after sterilization. This gas is vented through an opening in the lens case. After the lens is stored, even if foreign matter enters the opening, it will enter a place away from the storage table, so it will not adhere to the intraocular lens on the storage table.

[Example] Next, embodiments of the present invention will be described.

Fig. 1 is a perspective view of an embodiment of the present invention with the lid open, Fig. 2 is a plan view of the same embodiment with the lid open, and Fig. 3 is a cross-section taken along the line - in Fig. 6. Figure 4 is a sectional view taken along the - line in Figure 6, Figure 5 is an enlarged sectional view showing the state in which the intraocular lens is placed on the storage stand, and Figure 6 is the same embodiment with the lid closed. FIG. 7 is a perspective view of a lens case in another embodiment of the present invention, and FIG. 8 is a perspective view of a lens case in still another embodiment of the present invention.

First, an embodiment in which the lid portion 2 is provided with an opening 10 will be described.

In FIGS. 1 and 2, the basic structure is explained as follows: 1 is a container part, 2 is a lid part, and 3 is a hinge part. The container part 1 has a storage chamber 15 for storing an intraocular lens, and the upper surface thereof is an opening surface. Further, the storage chamber 15 is formed into a recessed shape by the bottom portion 5 and an outer frame 13 in the form of a peripheral wall that is erected around the bottom portion 5. Note that a stepped portion 16 is formed along the inner periphery of the upper edge of the outer frame 13 to tightly fit the lid portion 2 thereinto.

Details of the storage chamber 15 will be further explained with reference to FIGS. 3 to 5.

A storage table 7 is formed in the center of the storage chamber 15 on which the intraocular lens a is placed. The storage stand 7
There are four cuts 6 that extend radially on the annular platform.
It is shaped like this. Such storage stand 7
is the optical part of the intraocular lens a (usually its diameter is 5~
7 mm), and has a height of at least about 1 mm from the bottom 5. With this height of about 1 mm, the storage table 7 can store the intraocular lens a regardless of the difference in loop angle, whether it is an anterior chamber lens or a posterior chamber lens. It is now possible to do so. The cut 6 forms a space between the optical lower surface of the intraocular lens a and the bottom part 5, and allows the gas to spread well during EO gas sterilization, and also prevents the gas from flowing outside the storage table 7. It is formed to allow you to escape. Therefore, the break 6
The size of is determined by taking into account both factors, since a larger size is better from the viewpoint of degassing properties, but a smaller size is better from the viewpoint of holding stability of the intraocular lens a. In general, although it depends on the size of the storage stand 7,
Preferably, the cut width is 1 to 15 mm. Note that since the loop of the intraocular lens a may be accommodated in the cut 6, it is preferable to provide two or more cuts at equal intervals.

A support column 8 is formed around the outer periphery of the storage table 7 . The support columns 8 are provided to prevent the intraocular lens a placed on the storage table 7 from shifting, and it is preferable to provide at least three support columns for this purpose. In this embodiment, four pieces are provided at equal intervals behind each piece of the storage table 7. The installation location of the support pillar 8 is preferably a location adjacent to the storage stand 7;
If the degassing property does not deteriorate, that is, cut 6
If it is not blocked, it may be provided at the location of the cut 6. The height of the support column 8 is preferably higher in order to prevent the intraocular lens a from popping out, but if it is too high, it becomes difficult to put in and take out the intraocular lens a, so it is determined based on the balance between the two. Generally, (storage stand 7
(the height of the storage stand 7 + about 0.5 to 5 mm), but it is more preferable to set it to (the height of the storage stand 7 + about 1 to 2 mm).

An annular projection 9 is formed in the lid part 2 at a position corresponding to the optical part of the intraocular lens a when the lid part 2 is closed. The jetty 9 is for preventing the intraocular lens a from popping out onto the storage table 7, and is designed so that the distance between its top surface and the storage table 7 is about 1.5 mm or more when the lid part 2 is closed. , it is preferable to set its height.

Further, the lid portion 2 is formed with an opening 10 for degassing. This opening 10 must not be in a position facing the storage table 7 when the lid part 2 is closed, but must be formed in a position away from it. In the embodiment, as shown in FIGS. 1 and 2, two
openings 10 are formed.

The diameter and number of the openings 10 will depend on the degassing conditions (time, temperature, etc.), but if they are too large, foreign matter will easily enter, so the diameter is generally 2 to 6.
Preferably, it is about mm. Further, the number of openings 10 may be determined in relation to the diameter so that it is neither too large nor too small.

In the storage chamber 15, an annular jetty 11 is formed around the support column 8. Although the jetty 11 in this embodiment has an annular shape, it may also be an elliptical or polygonal jetty. This jetty 11
The inner diameter is the total length of the intraocular lens a (i.e., the length including the optical part and the loop part, and is generally about 11 to 14 mm.
(has a length) that is larger.

The jetty 11 is provided for injecting saline into its interior and immersing the intraocular lens a in the saline, and its height is approximately 1.5 mm higher than the storage table 7.
By doing so, the intraocular lens a, which is typically about 1.3 mm thick, is immersed in saline.

Around the jetty 11, there is an outer frame 13 and a jetty 11.
An outer moat 12 is formed. Its depth is approximately the same as the inside of the jetty 11. This outer moat 12 consists of a contaminated area 19 (generally refers to the outer frame 13 and the surface of the container part 1 connected to it; the same applies hereinafter) that may be touched by a doctor, etc., and a sterilized area (inner side of the jetty 11) that must not be contaminated. (hereinafter the same shall apply). By providing this outer moat 12, even if the saline water overflows over the jetty 11 when the saline water is injected into the jetty 11, the overflowing saline water is prevented from coming into contact with the contaminated area 19. If the saline comes into contact with the contaminated area 19, there is a risk that bacteria and dirt will be transmitted by the saline and contaminate the intraocular lens a; however, in this embodiment, the outer moat 12
This danger can be prevented by having a Note that if the width of the outer moat 12 is narrow, the overflowing saline water will not flow down into the outer moat 12 due to the surface tension of the saline, so it must be wide enough to avoid the effects of surface tension. Must be.

In the illustrated embodiment, the outer moat 12 is single layered, but
A slightly larger jetty may be provided around the jetty 11 to make the outer moat 12 double. In that case, the width of each outer moat 12 needs to be wide enough to prevent surface tension from occurring in overflowing saline water.

Next, the hinge portion 3 and the lid portion 2 will be explained based on FIG. 1 and FIG. 2.

A hinge portion 3 is continuously formed on one short side of the outer frame 13, and a locking protrusion 18 is formed on the other short side. The hinge portion 3 is formed thin and has the flexibility necessary to open and close the lid portion 2, and when the lid portion 2 is opened by hand, the lid portion 2 can be opened in the direction of arrow A by its own elasticity. Gives it great elasticity. The lid portion 2 is made to have an outer circumferential dimension that is substantially the same as the inner circumferential dimension of the outer frame 13, and is adapted to fit tightly into the outer frame 13. Moreover, the thickness is made such that when the lid part 2 is fitted onto the stepped part 16, the surface of the lid part 2 and the surface of the outer frame 13 are flush with each other. A finger hook 17 that also serves as a hook is formed on the free edge of the lid 2 and can be hooked onto a hook 18 on the container 1 .

It is preferable that the container portion 1, lid portion 2, and hinge portion 3 of the above configuration be integrally molded from synthetic resin in order to reduce the number of manufacturing steps and obtain a simple configuration.
The synthetic resin material used is preferably styrene resin, polypropylene, etc. When such materials are used, good transparency and degassing properties are obtained, and the hinge portion 3 is also provided with appropriate flexibility and elasticity. be done.

As mentioned above, when configuring the hinge part 3 and the lid part 2, the hinge part 3 functions as a guide for the opening and closing operation of the lid part 2. Just push down the lid part 2 with your hand (in the direction of arrow B), and the finger hook part 1
7 fits into the locking protrusion 18, and the lid part 2 fits into the step part 16.
The storage chamber 15 can be closed by fitting into the storage chamber 15. In addition, in order to open the closed lid part 2, if you push up the finger hook part 17 lightly, the hinge part 3
Due to its elasticity, the lid portion 2 can be opened wide in the direction of arrow A, making it possible to easily take out the intraocular lens (Fig. 1). Moreover, since the lid part 2 is not separated from the container part 1 in this open state, there is no risk of loss or the like.

Next, how to use the lens case of this embodiment will be explained.

When taking out the intraocular lens a from the case and inserting it into the eye, first open the lid 2 and inject saline into the jetty 11. When the jetty 11 is filled with saline, the intraocular lens a on the storage table 7 is immersed in the saline, thereby cleaning the intraocular lens a and improving the biocompatibility of the intraocular lens a. . Note that if too much saline water is injected into the jetty 11, the saline water overflows from the jetty 11, but the overflowing saline water is kept separate from the saline water in the jetty 11. Therefore, an accident such as bacteria and dirt adhering to the contaminated area 19 being carried away by the overflowing saline and adhering to the intraocular lens a on the storage table 7 does not occur.

In the embodiment described above, saline can be directly injected into the jetty 11, so there is no need to prepare a separate sheath for saline injection before inserting the intraocular lens a into the eye. It is possible to directly insert the intraocular lens from the lens case into the eye without having to transfer the intraocular lens from the lens case to the Schiere and inserting it into the eye from the Schiere.

Further, by providing the opening 10 in the lid portion 2, gas can be easily vented, which is convenient even when performing EO gas sterilization, which is the mainstream sterilization method for intraocular lenses. Furthermore, at this time, since the opening 10 is provided at a position apart from the storage table 7, even if foreign matter such as dirt enters there, it will not directly adhere to the intraocular lens. Further, in many cases, the foreign matter that has entered will fall into the outer moat 12, so the jetty 11 prevents the foreign matter from entering the storage platform 7. This prevents contamination of the intraocular lens a even if foreign matter enters the lens case.

Next, another embodiment will be described.

FIG. 7 shows a lens case in which an opening 10 is formed in an outer frame 13. Further, FIG. 8 shows a lens case in which an opening 10 is formed in the bottom 5. As shown in FIG. As described above, the opening 10 in the present invention may be provided anywhere as long as it does not face the upper and lower surfaces of the storage table 7 and can lead gas from the storage chamber 15 to the outside. Further, the number of openings 10 is also arbitrary as long as it is one or more. Also in the embodiments shown in FIGS. 7 and 8,
As in the embodiment shown, degassing and prevention of contamination of the intraocular lens a can be achieved.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist thereof.

[Effects of the invention] According to the invention, even if foreign matter enters through the gas venting opening, staining of the intraocular lens is prevented.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the present invention with the lid open, Fig. 2 is a plan view of the same embodiment with the lid open, and Fig. 3 is a cross-sectional view taken along the - line in Fig. 6. Figure 4 is a sectional view taken along the - line in Figure 6, Figure 5 is an enlarged sectional view showing the intraocular lens placed on the storage stand, and Figure 6 is the same embodiment with the lid closed. FIG. 7 is a perspective view of a lens case in another embodiment of the present invention, and FIG. 8 is a perspective view of a lens case in still another embodiment of the present invention. Main symbols in the drawings: 1... Container part, 2... Lid part, 3... Hinge part, 5... Bottom part, 7... Storage table, 8... Support column, 10... Opening part, 11... Jetty , 12... outer moat, 13... outer frame, 15... storage room.

Claims (1)

[Claims for Utility Model Registration] A storage chamber formed into a recessed shape from a bottom and an outer frame erected around the bottom, and a container for placing an intraocular lens formed inside the storage chamber. storage stand and
a lid portion capable of closing an upper opening surface of the storage chamber, and at least one or more openings for degassing are formed in the lid portion, the outer frame, and the bottom portion in a portion that does not face the storage table. Intraocular lens case.