JP2018141911A - Aid for attaching ring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aid for attaching a ring device, the aid allowing a stable and easy attachment of a ring device with an opening in the center.SOLUTION: The aid for attaching a ring device includes: a supporting unit with an opening; and a ring device mounting unit on the upper end side of the supporting unit, the ring device mounting unit being for mounting a ring device. The angle formed by intersecting extended lines of the ring device mounting unit is in the range of 60° to 160°.SELECTED DRAWING: Figure 1

Description

The present invention relates to an annular device mounting aid for mounting an annular device on a sclera.

An annular device having an opening at the center is disclosed as a device for efficiently delivering a drug against diseases of posterior segment tissues such as the retina, choroid, sclera, and vitreous (Patent Document 1). See). Because it contains a drug, wearing the device on the surface of the sclera can effectively deliver the drug to the posterior ocular tissue. This is larger than when a device that includes is attached.

However, since the annular device described in Patent Document 1 has an opening at the center, it is a common method used for wearing contact lenses. The method of wearing cannot be done well.

By the way, when wearing a normal contact lens, as described above, after the contact lens is taken out from the housing case, it is once placed on the belly of the finger. Accordingly, when the hand is not sufficiently washed before wearing, the contact lens is contaminated, and there is a risk of causing eye damage by wearing the contaminated contact lens.

Accordingly, various contact lens mounting aids have been disclosed for mounting while keeping the contact lens surface clean. For example, Patent Document 2 discloses hollow spherical first and second intake / exhaust tanks made of rubber or soft synthetic resin and having elasticity, and a nozzle tube that is detachably attached to the tank. In addition, a contact lens wearing tool including a nozzle port which is a tip portion of the nozzle tube and a flat surface around the nozzle port is disclosed.

In Patent Document 3, a contact lens mounting tool having a lens adsorbing body having an adsorption surface with a surface area of 7 square mm or more and 60 square mm or less, and a lens that retains the lens shape without transmitting the lens but transmitting the liquid. A contact lens mounting kit comprising a container having a partition structure and the contact lens mounting tool is disclosed.

Patent Document 4 includes a pair of sandwiching portions that can be moved toward and away from each other by the operation of a finger and deform and pick a soft contact lens by the approach of each other. Disclosed is a soft contact lens mounting device provided with a lens mounting surface that allows the deformation of the soft contact lens picked by the sandwiching portion of the pair to be released by the mutual separation of the pair of sandwiching portions and overlapped and supported on the convex surface side. ing.

In Patent Document 5, in order to prevent the field of view from being obstructed when the contact lens is mounted, the contact lens includes a mounting portion on which the contact lens is mounted and a grip rod extending from the mounting portion in a rod shape. The description portion is formed in an annular shape or a shape obtained by cutting a part of the ring, and includes an opening portion that penetrates in the thickness direction. The opening portion receives a part of the convex surface of the contact lens. A contact lens wearing tool (see Patent Document 5) formed in a size to be disclosed is disclosed.

International Publication No. 2010/092735 JP 2000-245765 A JP 2001-299802 A JP 2012-103350 A JP 2013-148604 A

However, the instruments described in Patent Documents 2 to 5 are all intended for contact lenses and are not intended for annular devices having openings. In addition, no consideration is given to wearability.

In particular, since the annular device is attached to the sclera, the diameter tends to be larger than that of a normal contact lens attached to the cornea. Therefore, if an attempt is made to attach the annular device into the eye using the abdomen of the finger, the attachment becomes difficult because the annular device bends. Then, when the auxiliary tool which assists mounting | wearing of a cyclic | annular device is calculated | required, since the auxiliary tool of the cited references 2-5 mounts the center part of a contact lens, it cannot be used for a cyclic | annular device.

Moreover, even if it is going to apply the auxiliary tool of the cited reference 5 to a cyclic | annular device, the problem that a cyclic | annular device cannot be mounted stably because the width | variety of the mounting part of a lens is smaller than the width | variety of a lens. There is.

Then, an object of this invention is to provide the annular device mounting | wearing auxiliary tool which can mount | wear the cyclic | annular device which has an opening part in the center part simply and stably.

The inventors have come to pay attention to the configuration of the mounting portion of the annular device while intensively studying the auxiliary tool for simply and stably mounting the annular device.

Therefore, in the mounting aid, the annular device placement portion has a certain angle so that the angle of the annular device placement portion approximates the base curve of the annular device, that is, the radius of curvature of the sclera. It has been found that the design of the ring device improves the transferability of the annular device from the wearing aid to the sclera surface, making it possible to more easily and stably attach the annular device.

Furthermore, it was found that the annular device can be stably placed by making the width of the annular device placement portion larger than the width of the annular device. The present invention has been completed based on these findings.

That is, according to the present invention, the following annular device mounting aid is provided.
(1) An annular device mounting aid for mounting an annular device, comprising: a support portion having an opening; and an annular device placement portion for placing an annular device provided on the upper end side of the support portion. The angle of the annular device mounting portion is an angle that is in the range of 60 ° to 160 ° as an angle formed by the intersection of the extension lines of the annular device mounting portion. The assisting device for mounting the annular device according to the description.
(2) The outer diameter of the support portion is 16 mm to 20 mm, the diameter of the opening portion is 10 mm to 15 mm, and the width of the annular device mounting portion is 50 to 400% with respect to the width of the annular device. The auxiliary | assistant tool for cyclic | annular device mounting | wearing as described in (1) which exists.
(3) The annular device wearing aid according to (1) or (2), wherein the annular device wearing aid is formed of a soft material.

According to the present invention, the annular device can be simply and stably mounted on the sclera. According to the present invention, it is possible to prevent a finger from touching the corneal surface by mistake when mounting the annular device, and thus the occurrence of corneal injury can be reduced.

FIG. 1 is a cross-sectional view of the annular device mounting aid of the first embodiment. FIG. 2 is a plan view of the annular device of the first embodiment. FIG. 3 is a top perspective view of the annular device mounting aid of the first embodiment. FIG. 4 is an enlarged cross-sectional view and a plan view of a placement portion of the annular device mounting aid of the first aspect. FIG. 5 is an enlarged cross-sectional view and a plan view of the placement portion of the annular device mounting aid of the second embodiment. FIG. 6 is an enlarged cross-sectional view and a plan view of the placement portion of the annular device mounting aid of the third aspect. FIG. 7 is an enlarged cross-sectional view and a plan view of a placement portion of the annular device mounting aid of the fourth aspect. FIG. 8 is a top perspective view of the annular device mounting aid of the fourth embodiment. FIG. 9 is a cross-sectional view showing an aspect in which the annular device is attached in the eye using the annular device attachment aid.

Hereinafter, the details of the annular device mounting aid that is an embodiment of the present invention will be described. However, the technical scope of the present invention is not limited only to the matters of this item, and the present invention achieves the object. As long as it does, various aspects can be taken.

The annular device mounting aid includes at least a support portion having an opening and an annular device placement portion for placing the annular device provided on the upper end side of the support portion. When the angle of the annular device mounting portion is an angle that is in the range of 60 ° to 160 ° as an angle formed by the intersection of the extension lines of the annular device mounting portion, It is useful as an auxiliary tool for easily and stably mounting the annular device.

The annular device mounting aid includes a flange portion extending in the outer edge direction from the end portion of the annular device placement portion, and a base portion extending in the vertical direction in connection with the end portion of the support portion. Is preferred. The support portion is formed so as to extend downward from the end portions of the annular device placement portion and the flange portion. Since the support portion has an opening, it has a cylindrical shape. By making the supporting portion to be gripped cylindrical, the annular device can be stably placed and further gripped, and as a result, mounting becomes easy. Further, by making the inside of the support portion hollow, the field of view is not obstructed when the annular device is worn, and psychological anxiety during wearing can be reduced.

In particular, the present inventors have focused on improving wearability on the eyeball surface, preferably the scleral surface, from the annular device placed on the assisting device, in order to improve the convenience when the annular device is worn.

The auxiliary device for attaching the annular device includes an annular device mounting portion on the annular device mounting portion by including a cylindrical support portion having an opening and an annular device mounting portion having an annular shape with a certain inclination. It is characterized in that the annular device can be easily mounted by improving the stability (mountability) of the lens and further improving the mounting property to the eyeball surface, preferably the scleral surface.

Hereinafter, although the annular device mounting aid will be described in detail with reference to the drawings, the technical scope of the present invention is not limited only to those shown in these drawings.

The annular device mounting aid 1 includes a support portion 4 having an opening 6 and an annular device placement portion 2 on which the annular device 7 is placed. The annular device 7 is placed on the annular device placement portion 2 so that the shape does not change.

By forming the annular device mounting portion 2 with a certain inclination, the annular device 7 is mounted on the annular device mounting portion 2 while maintaining the original curvature, and the annular device 7 and the annular device mounting are placed. Since the part 2 comes into contact with the periphery of the midpoint of the width F of the annular device 7, the contact area between the two becomes small, so that the mounting property of the annular device 7 on the eyeball surface is improved.

When the annular device 7 is placed on the annular device mounting aid 1, it is preferable to use the assist device 1 on a horizontal table. Further, when the annular device 7 is mounted, since the support portion 4 is gripped and used, the height of the support portion 4 can be arbitrarily designed in consideration of stability and ease of gripping.

The base portion 5 formed by extending in the vertical direction from the lower end side of the support portion 4 is particularly limited as long as it is a shape considering the stability when the annular device mounting aid 1 is placed on a horizontal base. Not.

The basic configuration of the annular device 7 to be worn using the annular device mounting aid 1 is not particularly limited as long as it does not hinder wearing and can cover the sclera surface. The outer diameter H of the annular device is preferably about 16 to 20 mm from the viewpoint of insertability onto the eyeball, wearability, and scleral surface coverage. On the other hand, the inner diameter G of the annular device is preferably about 10 to 15 mm in order to prevent the inner edge of the annular device from contacting the cornea. The width F of the annular device indicates the portion formed between the outer edge 13 of the annular device and the outer edge 14 of the opening of the annular device, and is due to the difference between the outer diameter H of the annular device and the inner diameter G of the annular device. It is determined.

The upper end of the annular device mounting aid 1 has an annular device placement portion 2 and a flange portion 3. The flange portion 3 indicates a portion set with a predetermined width from the outer edge portion 8 of the support portion 4 so as to be substantially parallel to the base portion 5 and has a width B. The shape of the flange part 3 is not specifically limited, Flat may be sufficient and you may have a convex shape and another structure. Since the flange portion 3 is flat, when the annular device 7 is attached using the annular device attachment aid 1, the upper end of the annular device attachment aid 1 accidentally contacts the surface of the eyeball. In addition, it is possible to reduce damage to the surface of the eyeball. The width B of the flange portion 3 is arbitrarily set, and is preferably 1 to 50%, more preferably 5 to 35%, and further preferably 7 to 30% with respect to the width A of the annular device placement portion 2. It is.

The annular device placement portion 2 indicates a portion formed between the opening-side end portion 9 of the flange portion 3 and the outer edge portion 10 of the opening portion 6, and has a width A. The width A of the annular device placement portion 2 is not particularly limited as long as it has a width that allows the annular device 7 to be placed, but is preferably 50 to 400% with respect to the width F of the annular device 7. More preferably, it is 100-380%, More preferably, it is 100-160%. The outer diameter D of the support portion 4 is not particularly limited as long as it is a diameter that can be grasped by the abdomen of the finger, but from the viewpoint of the insertability of the annular device 7, for example, is smaller than the unfolded width in a state of being spread with fingers. It is a grade, Preferably it is about 10-22 mm, More preferably, it is 16-20 mm. The diameter C of the opening 6 is preferably larger than the diameter of the cornea and more preferably about 10 to 15 mm because the cornea has a pain sensation and the sclera has no pain sensation.

Furthermore, the annular device mounting portion 2 has a great feature in that it has a certain inclination. By adopting the inclined configuration, the annular device 7 can be placed on the annular device placement portion 2 while maintaining a shape having an original curvature. In addition, when the annular device 7 is placed in a state where the curvature is maintained, the contact area between the annular device placement portion 2 and the annular device 7 is reduced. Therefore, when the annular device 7 is mounted, the surface of the eyeball, preferably Wearability to the sclera surface will be improved.

The shape of the surface of the annular device placement portion 2 is not particularly limited as long as it has the placement property of the annular device 7 and the attachment property to the eyeball surface. For example, as shown in FIG. 5, a convex shape or a concave shape may be exhibited. Furthermore, as shown in FIGS. 6 and 7, concentric annular protrusions 11 and radial protrusions 12 can be attached to the surface of the annular device mounting portion 2. Since the annular device placement portion 2 has the above-described configuration, the contact area between the annular device placement portion 2 and the annular device 7 is reduced, so that improvement in wearability can be expected. The number of protrusions in the annular protrusion 11 and the radial protrusion 12 can be designed with any number, and is not particularly limited.

The inclination (angle) X of the annular device mounting part 2 is represented by an angle formed by the intersection I of the extension lines of the opposing annular device mounting part 2 in the cross section of the annular device mounting aid 1. Although it will not specifically limit if the angle X of the cyclic | annular device mounting part 2 exists in the range of 60-160 degrees, Preferably it is 70-150 degrees, More preferably, it is 80-140 degrees. The angle X of the annular device placement portion 2 when the annular device placement portion 2 has a convex shape or a concave shape is represented by an angle formed by an intersection I of straight lines connecting both ends of the convex portion or the concave portion. The

The support portion 4 refers to a cylindrical portion formed by extending in the vertical direction from the outer edge of the flange portion 3 and the outer edge portion 10 of the opening 6. When the annular device 7 is placed on the annular device placement portion 2, it is preferable to use the annular device mounting aid 1 on a horizontal table.

When the annular device 7 is mounted on the eyeball surface, the support portion 4 is gripped and used. Therefore, the height E of the support portion 4 takes into consideration the stability at the time of placement and the ease of gripping at the time of mounting. Designed. The height E of the support part 4 affects the operability when the annular device 7 is mounted, and if it is too long, the operability deteriorates and it becomes difficult to mount, so it is preferably about 15 to 50 mm. More preferably, it is 20-45 mm, More preferably, it is 25-40 mm.

The base portion 5 extends in the vertical direction from the lower end of the support portion 4. For example, the base portion 5 may be in contact with the support portion 4 at all points, or may be in a shape of being in partial contact. In addition, the shape of the base portion 5 is not particularly limited as long as it has stability when the mounting aid is placed on a horizontal base, and the shape is circular, square, radial, polygonal, or the like. Can take.

The material for the annular device mounting aid 1 is preferably a material having formability, shape stability, and heat resistance and chemical resistance enough to withstand autoclave sterilization. In general, silicone resins, polyethylene, polypropylene, alicyclic polyolefins, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, thermoplastic elastomers and the like can be mentioned without limitation.

Even when the annular device mounting aid 1 is in contact with the eyeball surface when the annular device 7 is mounted, in order to minimize damage to the eyeball surface, it is more preferable to be soft and flexible resin. In particular, silicone resins are preferably used.

The manufacturing method of the auxiliary device 1 for attaching the annular device is a general method for molding a thermoplastic resin, such as injection molding, extrusion molding, blow molding, vacuum / pressure forming, foam molding, or thermosetting resin molding. The method is formed by general cast molding, lamination molding or the like, but is not particularly limited. Among these, from the viewpoint of moldability, a two-component curable silicone resin is preferably used, so that cast molding is preferable, and vacuum casting is more preferable.

One specific aspect of the annular device mounting aid 1 is that the angle X of the annular device mounting portion 2 is 80 ° to 140 °; the outer diameter D of the support portion 4 is 16 mm to 22 mm; The inner diameter C is 10 mm to 15 mm; the width A of the annular device mounting portion 2 is 70 to 160% with respect to the width of the annular device 7; and an annular device mounting aid formed of a soft material. is there. The outer diameter D of the support portion is preferably equal to or larger than the outer diameter H of the annular device 7, but is preferably smaller than the opening width in a state where the outer diameter D is spread with fingers.

The annular device wearing auxiliary tool 1 is excellent in at least three evaluation items among shape retention, stability, operability, and wearability described in Examples described later. In particular, the annular device mounting aid 1 has excellent operability related to the mounting operation and mounting property of the annular device 7 on the surface of the eyeball, but excellent shape retention of the mounted annular device 7. It is preferable.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to these examples, and the present invention can take various modes as long as the problems of the present invention can be solved. it can.

[1. Formation of annular device]
After mixing 99 g of 2-hydroxyethyl methacrylate as a hydrophilic monomer, 1 g of ethylene glycol dimethacrylate as a crosslinkable monomer, and 0.15 g of 2,2′-azobisisobutyronitrile as a polymerization initiator, (The temperature was raised to room temperature to 100 ° C. under a nitrogen atmosphere for 40 hours). The obtained unswelled device was swollen by heating at 60 ° C. for 30 minutes in physiological saline and subjected to high-pressure steam sterilization to obtain a circular device.

[2. Formation of auxiliary device for attaching annular device]
Examples 1 to 6 were prepared by pouring a two-component mixed silicone resin into a mold formed in the shape of Table 1 and heating at 60 ° C. for about 6 to 12 hours. Comparative Examples 1 to 3 were prepared by cutting a tube made of vinyl chloride resin into the shape shown in Table 1 with a blade.

[3. Evaluation results]
<Shape retention of annular device>
The annular device obtained in 1 above was taken out from the physiological saline, and placed on the annular device mounting aid obtained in 2 above with tweezers and fingers. The shape of the annular device at that time was evaluated as follows.
○: The annular device retains its original shape.
X: Some distortion is confirmed in the shape.

<Stability of auxiliary device for annular device attachment>
Similarly, the stability of the annular device mounting aid when the annular device was placed was evaluated as follows.
○: Does not wobble when placing.
X: Shake when placing.

<Operability of auxiliary device for attaching annular device>
The operability of the annular device mounting aid when mounting the mounted annular device was evaluated as follows.
○: There is no problem in the handling related to mounting.
X: It is difficult to handle.

<Attachment of an annular device to the eyeball surface>
Wearability based on the transfer of the annular device from the annular device attachment aid to the eyeball surface when the mounted annular device was attached was evaluated as follows.
○: The annular device is mounted on the surface of the eyeball 8 times or more after 10 mounting operations.
(Triangle | delta): A cyclic | annular device is mounted | worn by the mounting | wearing operation 10 times 5-7 times.
X: It is 4 times or less that the annular device is mounted on the eyeball surface in 10 mounting operations.

The results evaluated as described above are shown in Table 1. As shown in Table 1, for Examples 1 to 6, evaluation of “◯” was obtained for all evaluation items, but for Comparative Examples 1 to 3, “x” was evaluated for at least any item. Therefore, it was found that the annular device mounting aids of Examples 1 to 6 were excellent in shape retention, stability, operability, and mounting properties.

DESCRIPTION OF SYMBOLS 1 Auxiliary tool for cyclic | annular device mounting 2 Annular device mounting part 3 Flange part 4 Support part 5 Base part 6 Opening part 7 Annular device 8 Outer edge part of supporting part 9 Opening side edge part 10 of flange part Outer edge part 11 of opening part Annular protrusion 12 Radial protrusion 13 Outer edge 14 of annular device A Outer edge of annular device opening A Width of annular device mounting B B Width of flange C Diameter of opening D Outer diameter of support E High height of support F Width of annular device G Inner diameter of annular device H Outer diameter of annular device I Intersection of extension line of annular device placement part X Angle of annular device placement part

Claims (3)

A support having an opening;
An annular device mounting aid for mounting the annular device, comprising an annular device mounting portion for mounting the annular device provided on the upper end side of the support portion,
2. The annular device mounting portion according to claim 1, wherein the angle of the annular device mounting portion is an angle that is in a range of 60 ° to 160 ° as an angle formed by an intersection of extension lines of the annular device mounting portion. Aids. The outer diameter of the support portion is 16 mm to 20 mm, the diameter of the opening portion is 10 mm to 15 mm, and the width of the annular device mounting portion is 50 to 400% with respect to the width of the annular device. Item 2. The annular device mounting aid according to Item 1. The annular device attachment aid according to claim 1 or 2, wherein the annular device attachment aid is formed of a soft material.