JPH0223150Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a case for housing an intraocular lens.

[Conventional technology]

As a conventional lens case, there is one in which a container portion for storing an intraocular lens and a lid portion of the container portion are made separately and assembled using appropriate fitting means.

[Problem that the invention attempts to solve]

In conventional lens cases where the container part and the lid part are separate, it is time-consuming to remove and fit the lid each time the intraocular lens is stored or taken out, and it is difficult to prevent loss. There is a problem in that administrative complexity remains in many aspects. Furthermore, since a gap is created at the fitting portion between the lid and the container, there is a risk that foreign matter such as dust, dirt, microorganisms, etc. may enter through the gap and contaminate the intraocular lens.

In view of these circumstances, it is an object of the present invention to provide a lens case that eliminates the complexity of assembly work and management, and further prevents foreign matter from entering the lens case. Another object of the present invention is to provide a lens case with good degassing properties after gas sterilization. A further object of the present invention is to provide a lens case that does not attract bacteria or dirt during surgery.

[Means for solving problems]

The present invention (a) consists of a container part, a lid part that closes the opening surface of the container part, and a hinge part that connects the container part and the lid part so as to be openable and closable, and the container part, the lid part, and the hinge part are connected to each other. (b) The container portion has an outer frame and a storage chamber surrounded by the outer frame, and the storage chamber has an intraocular lens placed therein. (c) an annular jetty formed to surround the storage table; and an outer moat formed in a groove shape between the jetty and the outer frame; (c) the outer frame; A stepped portion is formed on an upper edge along the inner periphery of the lid portion, and the lid portion is formed to have an outer circumferential dimension that is substantially the same as the inner circumferential dimension of the stepped portion, and is configured to tightly fit into the outer frame. It is characterized by having been.

[Effect]

In the present invention, since the lid part is connected to the container part by the hinge part, the lid part can be easily opened and closed, and there is no fear of losing the lid part, making management easier. Further, in the present invention, since the lid portion tightly fits into the stepped portion of the storage chamber, there is no gap where foreign matter may enter, and contamination of the intraocular lens is prevented. Furthermore, since the present invention is integrally molded from a synthetic resin material with good degassing properties, it has good degassing properties after gas sterilization. Furthermore, in this invention,
The outer moat defines a contaminated area that a doctor may touch during surgery (generally refers to the outer frame and the surface of the container connected to it) and a sterile area that must not be contaminated (inner area of the jetty). Since the saline is isolated from the saline, even if the saline water overflows over the jetty when saline is injected into the jetty, the overflowing saline water is prevented from coming into contact with the contaminated area.

〔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 perspective view of the embodiment with the lid closed, and Fig. 3 is a perspective view of the embodiment with the lid closed. A plan view of the opened state, Fig. 4 is a sectional view taken along the - line in Fig. 2, Fig. 5 is a sectional view taken along the - line in Fig. 2, and Fig. 6 is an enlarged view showing the state in which the intraocular lens is placed on the storage stand. FIG.

In FIGS. 1 and 2, 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. A stepped portion 16 is formed on the upper edge along the inner periphery of the storage chamber 15, and the outer periphery of the stepped portion 16 forms the outer frame 13. A hinge portion 3 is continuously formed on one short side of the outer frame 13, and a locking projection 18 is formed on the other short side. The hinge part 3 is formed thin, and has the flexibility necessary to open and close the lid part 2, and when the lid part 2 is opened by hand, the lid part 2 is moved in the direction of arrow A by its own elasticity.
It has the elasticity to bend in any direction. 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 provided with appropriate flexibility and elasticity. be able to.

In this embodiment as described above, the hinge portion 3
functions as a guide for the opening/closing operation of the lid part 2, so you can simply push down the lid part 2 with your hand in the direction of arrow B, as shown in FIG. 2, without any special care. is fitted into the locking protrusion 18, the lid part 2 is fitted into the stepped part 16, and the storage chamber 1 is closed.
5 can be closed. In addition, in order to open the closed lid part 2, if you push up the finger hook part 17 lightly, the elasticity of the hinge part 3 will cause the lid part to open.
can be opened wide in the direction of arrow A, allowing easy removal of the intraocular lens (Fig. 1).
Moreover, when the lid part 2 is opened in this way, the lid part 2 does not separate from the container part 1, so there is no risk of it being lost, and no foreign matter such as dust, dirt, or microorganisms can enter from the outside. It doesn't happen often.

Next, the structure of the storage chamber 15 in the lens case of this embodiment will be explained based on FIGS. 3 to 6.

The storage chamber 15 stores the intraocular lens a and directly fills it with physiological saline or Ringer's solution (hereinafter referred to as
The bottom part 5 is made in a completely sealed state to enable injection of saline (collectively referred to as saline). Therefore, the ethylene oxide gas (hereinafter referred to as EO gas) provided in conventional lens cases
Openings such as vent holes for gas (referred to as gas) are not formed tightly.

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 ring-shaped base.
It is shaped like this. Such a storage stand 7
is the optical part of the intraocular lens a (usually its diameter is 6 mm)
), and the bottom part 5
The height is at least about 1 mm. By having this height of about 1 mm, the storage table 7 can hold the intraocular lens a even if it is an anterior chamber lens.
Even posterior chamber lenses can be accommodated over various loop angles. Said cut 6
forms a gap between the optical lower surface of the intraocular lens a and the bottom part 5, so that the gas during EO gas sterilization can spread well, and furthermore, the gas can escape to the outside of the storage table 7. It is formed for.
Therefore, the size of the cut 6 is determined based on the balance between the two, since it is better to have a larger size from the viewpoint of degassing, but it is also better to have a smaller size from the viewpoint of holding stability of the intraocular lens a. Generally, storage stand 7
Although it depends on the size of the cut 6, it is preferable that the cut 6 has a width of 1 to 5 mm. Note that since the loop of the intraocular lens a may be accommodated in this 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 for preventing the intraocular lens a placed on the storage table 7 from shifting, and for this purpose it is preferable to provide at least three or more. In this embodiment, four pieces are provided at equal intervals behind each piece of the storage stand 7. The support column 8 is preferably installed at a location adjacent to the storage table 7, but it may be installed at the location of the cut 6 as long as the degassing performance is not deteriorated, that is, the cut 6 is not closed. 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 will be difficult to put in and take out the intraocular lens a, so it is determined based on the balance between the two. Generally, it is (height of storage stand 7 + about 0.5 to 5 mm), but it is more preferably (height of storage stand 7 + about 1 to 2 mm).

A cylindrical 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.

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 set higher than the storage table 7 by about 1.5 mm or more. By doing so, typically around 1.3
An intraocular lens a with a thickness of mm is immersed in saline.

Around the jetty 11, there is an outer frame 13 and a jetty 11.
An outer moat 12 surrounded by 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,
When the saline water is injected into the jetty 11, even if the saline water overflows beyond the jetty 11, the overflowing saline water is prevented from coming into contact with the contaminated area 19. If saline water comes into contact with contaminated area 19,
Although there is a risk of bacteria and dirt being transmitted by the saline and contaminating the intraocular lens a, in this embodiment, the presence of the outer moat 12 prevents this risk. Note that if the width of the outer moat 12 is narrow, the saline water that overflows will flow into the outer moat 1 due to the surface tension of the saline water.
2, so it must be wide enough not to be affected by surface tension.

In the illustrated embodiment, the outer moat 2 is single-layered, but an even 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.

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 becomes possible to directly insert an intraocular lens into the eye from the lens case without having to transfer the intraocular lens from the lens case to the Schiere and insert it into the eye from the Schiere. For this reason, in the past, the opened intraocular lens was transferred into a separately prepared sterilized shear dish filled with saline, which was a hassle, and the trouble that often occurred when transferring the intraocular lens to the shear dish. This can prevent dangers such as damage to the lens or loop or falling.

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.

[Effect of idea]

In the lens case of the present invention, the lid can be opened and closed easily and easily, there is no need to worry about losing the lid, and management is easy. Further, contamination of foreign substances is eliminated, and bacteria do not adhere to the intraocular lens, thereby preventing contamination of the intraocular lens. Furthermore, degassing properties after gas sterilization are improved.

[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 perspective view of the embodiment with the lid closed, and Fig. 3 is a perspective view of the embodiment with the lid closed. A plan view of the opened state, Fig. 4 is a sectional view taken along the - line in Fig. 2, Fig. 5 is a sectional view taken along the - line in Fig. 2, and Fig. 6 is an enlarged view showing the state in which the intraocular lens is placed on the storage stand. FIG. Main symbols in the drawings: 1: Container part, 2: Lid part,
3: Hinge part, 15: Storage chamber.

Claims (1)

[Claims for Utility Model Registration] (a) Consists of a container part, a lid part that closes the opening of the container part, and a hinge part that connects the container part and the lid part so as to be openable and closable; (b) The container part has an outer frame and a storage chamber surrounded by the outer frame, and the storage chamber is closed to the eyes. It includes a storage stand on which the inner lens is placed, an annular jetty formed to surround the storage stand, and an outer moat formed in the shape of a groove between the jetty and the outer frame, c) A stepped portion is formed on the upper edge along the inner circumference of the outer frame, and the lid portion is formed to have an outer circumferential dimension that is substantially the same as the inner circumferential dimension of the stepped portion, and is tightly fitted to the outer frame. An intraocular lens case configured to fit.