JPH0143697Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention relates to a contact lens holder.
In particular, the present invention relates to an improved shape of a contact lens holder that can effectively improve its durability and usability, and can also be used satisfactorily for contact lenses of various sizes (diameters).

(Prior art and its problems) Traditionally, in order to prevent breakage, damage, and loss of contact lenses during handling, synthetic resins have utilized the properties of elasticity and flexibility as protective holders for contact lenses. Therefore, containers designed to hold and hold contact lenses are widely used.

As disclosed in, for example, Japanese Patent Publication No. 43-26271 and Utility Model Publication No. 43-26708, such contact lens holders are usually mounted on a predetermined base in a predetermined shape such as a U-shape. A pair of clamping arms each having a cross-sectional shape are integrally provided so that their respective openings face each other.

In the case of a holder having such a structure, the contact lens is held between the holding arms by utilizing the elasticity and flexibility of the holding arms, and the lens can be inserted into and taken out between the holding arms. However, this is accomplished by elastically deforming the gripping arms, particularly at their bases, to widen the space between the gripping arms.

However, in conventional contact lens holders, the opposing opening edges of the clamping arms are shaped to rise approximately at right angles from the base at their bases, so the elasticity of the clamping arms as described above is limited. The stress generated due to the deformation will be concentrated at the root portion, and therefore, repeated elastic deformation during use may cause permanent deformation or even cracks at the root portion of the clamping arm. There was a risk of damage.

In addition, in order to deal with such problems, the strength of the parts that are elastically deformed has been increased by reducing the distance between the opposing opening edges of the clamping arms or by increasing the thickness of the parts. In some cases, the flexibility is poor, making it difficult to use, and there is a risk of damaging the lens.Fatigue of the member due to repeated elastic deformation may cause cracks or breakage at the base of the clamping arm. There was a problem that was said to occur easily.

In particular, it has been extremely difficult to provide a versatile holder with this shape that can be used for contact lenses of different sizes due to its structure. It was necessary to prepare several types of holders in different sizes depending on the size of the lens. In other words, the diameter of contact lenses generally ranges over a wide range of 7 to 13 mm, even for those that are in high demand. Therefore, in order to make these lenses versatile, it is necessary to make sure that the lenses do not fall off. The distance between the opposing opening edges of the clamping arm must be at least 7 mm or less, but when using such a holder with a small width between the opening edges as a holder for a large diameter contact lens. This is because it is necessary to further widen the space between the clamping arms when loading and unloading the clamp, resulting in significantly poor usability and durability.

In addition, in Japanese Utility Model Publication No. 52-55061, vertically extending through holes are cut out in the outer parts of both clamping arms, and when holding a large diameter contact lens, these through holes are cut out. A holder has been disclosed that can be used for contact lenses of different sizes by holding the outer peripheral edge of the lens in a state of protruding outward from the holder. When used as a holder for a large-diameter lens, the holder also had problems in its usability and durability, similar to the holder described above.

(Solution) The present invention was developed against the background of the above-mentioned circumstances, and its purpose is to provide a lens that is excellent in usability and durability, and that is compatible with contact lenses of various sizes. It is an object of the present invention to provide a contact lens holder that can be used satisfactorily even in various situations.

In order to achieve this object, the present invention provides a pair of clamping arms each having an opening for holding a lens on a predetermined base so that the respective openings face each other. In the contact lens holder, the contact lens holder is provided at a base portion of each of the pair of clamping arms so that a predetermined contact lens can be clamped between the clamping arms by utilizing the elasticity and flexibility of the clamping arms. The device is characterized in that cut portions of a predetermined width are provided on the side portions facing each other, and the deep end of each cut portion is formed in an arc shape.

(Effect of the invention) In other words, in the contact lens holder shaped according to the invention, the flexibility of the gripping arm is effectively ensured by the notch provided at the base of the gripping arm. As a result, its usability can be greatly improved.

In addition, since the deep end of the notch in this contact lens holder is formed in an arc shape, the stress generated at the base of the clamping arm due to elastic deformation can be effectively dispersed, and Since the occurrence of physical strain can be prevented, fatigue of the member can be reduced, and the occurrence of cracks and damage can be extremely effectively prevented.

Therefore, according to the present invention, it is possible to reduce the distance between the opposing opening edges of the clamping arm while ensuring excellent usability and durability, and thereby, various This makes it possible to provide a highly versatile holder that can be used well for contact lenses of various sizes.

(Example) Hereinafter, in order to clarify the present invention more specifically, an example of a contact lens holder having a shape according to the present invention will be described in detail with reference to the drawings.

First, FIGS. 1 to 4 show a contact lens holder as an embodiment of the present invention. This holder is formed integrally or by assembly using a synthetic resin material having appropriate elasticity and flexibility.

In these figures, reference numeral 10 denotes a base, which has an annular plate shape. A cylindrical base 12 is vertically provided in the center of one surface of the base 10, and a hollow portion 14 of the base 12 is
It is opened on the opposite surface of the base 10.

Further, a pair of clamping arms 16, 16 are integrally provided at the end of the base 12 opposite to the side connected to the base plate 10. These clamping arms 16, 16 are each formed into a U-shaped boat-shaped cross section with a relatively thin member thickness, and each opening 18 faces each other with a predetermined distance apart. It is provided. As shown in FIGS. 3 and 4, the pair of clamping arms 1 hold the contact lens 20 with its outer peripheral edge accommodated in the opening 18.
It is held by being held between 6 and 16.

Furthermore, these pair of clamping arms 16, 16
The outer wall portion 24 and the side wall portion 26 are connected to each other at the root portion 22 (connection portion with the base 12) and are integrally formed, and at the root portion 22, the outer wall of the clamping arm 16 Since the portion 24 is slightly thickened, its elasticity is enhanced.

Further, at the tip of each clamping arm 16, the outer wall portion 24 is bent outward (in a direction away from each other) to form a claw portion 30, and
The side wall portion 26 is cut out to form a mouth cutout portion 32 such that the distance between the opposing edge portions increases as the distance approaches the tip.
0 and the mouth cutout 32, the clamping arm 1
The contact lens can be easily inserted between 6 and 16. Further, the opposing end edges of the central portion of each side wall portion 26 are cut out in an arc shape to form a central cutout portion 34 . Note that these claw portions 30 and mouth cutout portions 32
The width of the central notch 34 is set to such an extent that the contact lens 20 held by the holding arms 16, 16 does not fall off.

Further, in the side wall portions 26 facing each other at the root portions 22 of the respective clamping arms 16, there are cut portions 36 cut outward from the end edges thereof with a substantially constant width. It is located facing the This notch 36 is provided with a depth end 38 extending slightly outward from the outer peripheral surface of the base 12, and the depth end 38 has a semicircular arc shape. It is said that

In addition, this contact lens holder is
As mentioned above, it is formed by integral molding or assembly using a synthetic resin material such as polyethylene or polyester elastomer, but it is especially resistant to steam sterilization, boiling sterilization, etc., and must be subjected to such sterilization treatment. It is preferable to use a synthetic resin material such as a polyester elastomer that can be used.

Next, FIG. 5 shows an example of a usage example in which a contact lens holder formed with the above-mentioned shape is applied to a contact lens sealed container for a doctor.

That is, as is clear from this figure, a cylindrical protrusion 42 and an annular protrusion 44 are provided inside the lid 40 of the container, and the contact lens holder is inserted into the hollow of the base 12. Part 1
The base plate 10 is integrally attached to the annular projection 44 so that the cylindrical projection 42 fits into the annular projection 44.

Then, attach the contact lens 2 to the holder.
By screwing the lid 40 onto the container body 46 containing a predetermined storage solution while holding the contact lens 20 in the container, the contact lens 20 can be held well within the container. It's getting old.

Note that the lid body 40 in this embodiment is
As disclosed in Publication No. 45-17829, etc., a tamper-proof structure is adopted, and a fastening ring 48 integrally provided at the bottom of the lid 40 is cut off and separated from the lid 40 when the lid is opened. This makes it obvious that the package has been opened.

Therefore, in the case of a contact lens holder formed in the above-described shape, the notch 3 provided in the side wall portion 26 of each clamping arm 16
6, the flexibility at the root portion 22 of the clamping arm 16 can be effectively ensured;
When the contact lens 20 is inserted into or taken out from the holder, the gripping arm 16 can be opened very easily, and its usability can be effectively improved.

In addition, since the depth end 38 of the notch 36 is formed in a semicircular shape, when the clamping arm 16 is expanded when inserting or removing the lens as described above, a problem occurs at the root portion 22 of the notch 36. Stress can be effectively dispersed and local distortion can be prevented, thereby effectively preventing permanent deformation and cracking due to material fatigue, and effectively improving durability. .

Therefore, in the case of such a holder, while ensuring its usability and durability, the opposing side wall portions 26 of the pair of clamping arms 16, 16,
To provide a holder that can reduce the distance between the inner edge portions of the lens 26 and can therefore be used satisfactorily for contact lenses having various sizes over an extremely wide range. becomes possible.

Furthermore, in the case of the holder in this embodiment, the side wall portion 2 of each clamping arm 16 is
Since the center notch 34 is provided in the center of the holder 6, even when the distance between the inner edges of the side walls 26 and 26 is reduced, it is easy to check whether or not a contact lens is present in the holder. Contact lenses can be checked by suction and holding devices (e.g.
By making the opening of a suction device (such as a dropper or a suction device connected to a vacuum pump) smaller than the area of the lens exposed at the central notch 34, the contact lens can be held with such a device. It also has the advantage that the contact lens can be easily inserted into the holder by inserting the device directly into the holder and then removing the device from the lens.

Above, an embodiment of a contact lens holder shaped according to the present invention has been described in detail, but this is merely an example, and the present invention
It should not be interpreted as being limited only to such specific examples.

For example, as for the shape of the holding arm 16, in addition to having a U-shaped cross section as in the above embodiment, any shape may be used as long as it has an opening that can hold a contact lens, and the specific shape thereof is not limited. isn't it.

Moreover, the base portion 2 of such a clamping arm 16
The shape of the notch 36 formed in 2 is not limited, and may be any shape such as a semicircle or a semiellipse, with the deep end being arcuate. The width and length should also be appropriately determined depending on the material and thickness of the holding arm 16.

Further, in the holder in the above embodiment, the opposing end edges of the side wall portions 26 of the pair of clamping arms 16, 16 are cut out at the opening notch 32 and the center notch 34, so that they are opposite to each other. The distance between the cutout edges 32, 34 has been increased, thereby further improving the usability of such a holder.
is not necessarily necessary.

In addition, in the above embodiment, an example was shown in which the holder according to the present invention was applied to a sealed container for a doctor, but the present invention can also be successfully applied to other cases such as those for general users. Of course, it is something that can be obtained.

And also the base 10 and the base 1 of the holder.
The shape of 2 may be changed as appropriate depending on the mounting structure for the container to which it is applied, and is not limited to the shape of the above embodiment.

Although not listed in detail, the present invention can be implemented with various changes, improvements, modifications, etc. based on the knowledge of those skilled in the art, and such embodiments may be implemented in accordance with the present invention. It goes without saying that any of these are included within the scope of the present invention as long as they do not depart from the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of a contact lens holder shaped according to the present invention, FIG. 2 is a cross-sectional view taken in FIG. 1, and FIG. 3 is a cross-sectional view taken in FIG. FIG. 4 is a cross-sectional view taken from FIG. 3. Moreover, FIG. 5 is a longitudinal cross-sectional view showing one form of usage when such a contact lens holder is applied to a sealed container for a doctor. 12: base, 16: clamping arm, 18: opening, 20: contact lens, 22: root part,
36: Notch, 38: Depth end.

Claims (1)

[Claims for Utility Model Registration] A pair of clamping arms having lens holding openings on the sides are integrally provided on a predetermined base so that the respective openings face each other, and the clamping arms A contact lens holder is provided in which a predetermined contact lens is held between the holding arms by utilizing the elasticity and flexibility of the holding arms, and a contact lens holder is provided at the opening side portion at the root portion of each of the pair of holding arms. A contact lens holder, characterized in that cut portions of a predetermined width are provided facing each other, and the deep end of each cut portion is formed in an arc shape.