JP5852449B2 - Conjunctival sac fitting - Google Patents

Description

  The present invention belongs to the technical field related to a conjunctival sac attachment device that is mounted on a conjunctival sac between a human eyeball and eyelids for medical care, beauty, and the like.

  The conjunctival sac is shaped like a bag with the bulbous conjunctiva covering the eyeball (sclera), the conjunctiva covering the back side wall of the eyelid, the bulbous conjunctiva, and the curved conical conjunctiva between the conjunctiva. Has some slack to make it possible. This conjunctival sac (mainly the bulbar conjunctiva) may develop conjunctival laxity in which loosening increases due to various causes.

  To treat conjunctival laxity, use an opener that opens up and down by hooking the upper and lower eyelids respectively, while maintaining a state where the eyelids are largely opened (for example, sewing) Method Anchoring) and eye drops are administered. However, since there are many patients who feel uncomfortable with this opening device, there is a demand for the development of a new therapeutic auxiliary device that does not cause discomfort to the patient.

  Conventionally, as a new treatment auxiliary device that does not cause discomfort to a patient, for example, a device described in Patent Document 1 is known.

  Patent Document 1 describes a conjunctival sac wearing tool including a ring body that has elasticity and is attached to the conjunctiva of the upper and lower conjunctival sac.

  The conjunctival sac wearing device according to Patent Document 1 is elastically attached to the conjunctival conjunctiva of the conjunctival sac so that the upper and lower eyelids are opened and inserted between the eyelid and the eyeball. Although there is an unpleasant sensation, there is little discomfort after wearing. In this conjunctival sac wearing tool, an ophthalmic drug can be continuously administered to the conjunctival sac by attaching a mechanism for administering the eye drop to the ring body.

Japanese Examined Patent Publication No. 62-58733

  In the conjunctival sac wearing device according to Patent Document 1, consideration is not given to the structure of the upper and lower conjunctival sac. Therefore, the mounting stability of the conjunctival sac on the conical conjunctiva is low, and the eye movement causes a positional shift. There is a problem that it may occur.

  In addition, in the research stage of completion of the present invention, the present inventor verified the stability of the attachment of the conjunctival sac to the conical conjunctiva using various O-rings provided for industrial use and medical use. . As a result, it has been concluded that mounting stability cannot be obtained with a simple ring body having elasticity.

  The present invention has been made in consideration of such problems and based on research results, and can be stably attached to the conjunctival sac of the conjunctival sac without causing discomfort to the patient. It is an object to provide a mounting tool.

  In order to solve the above-described problems, the conjunctival sac wearing device according to the present invention employs the means described in the claims.

  That is, according to the first aspect, in the conjunctival sac wearing device comprising a ring body that has elasticity and is attached to the conjunctiva of the upper and lower conjunctival sac, the conjunctival sac is positioned near the center line passing through the center of the pupil of the eyeball. The upper half of the conjunctival sac located above the center line and attached to the conjunctival conjunctiva of the upper conjunctival sac, and the conjunctival conjunctiva of the lower conjunctival sac located below the center line The length of the maximum diameter line orthogonal to the center line of the upper half is longer than the length of the maximum diameter line orthogonal to the center line of the lower half, The area is set smaller than the cross-sectional area of the lower half, and the upper half and the lower half are curved from the center so that they can enter the back side of the eyeball.

With this means, the upper half and the lower half are curved and positioned on the back side of the spherical eyeball, so that the elasticity of the conjunctival sac of the conjunctival sac on the back side along the outer surface of the eyeball It will act so as to press it.
In addition, by making the length of the maximum diameter line of the upper half longer than the length of the maximum diameter line of the lower half, it is possible to ensure a relatively deep upper conjunctival sac and a relatively shallow lower conjunctival sac. Will be attached to.
In addition, by relatively reducing the cross-sectional area of the upper half where the upper oculi levator muscle is located nearby, and relatively increasing the cross-sectional area of the lower half where the upper oculi levator muscle is not present nearby, It is securely attached to the upper conjunctival sac that is not easily deformed to the heel side and the lower conjunctival sac that is relatively easily deformed to the heel side.

  The conjunctival sac wearing device according to the present invention is positioned on the back side of the spherical eyeball having a curved upper half and lower half, so that the elasticity of the conjunctival sac of the conjunctival sac is outside the eyeball. The upper half and lower half are securely attached to the conjunctival conjunctiva of the conjunctival sac so that it can be pressed toward the back side along the side. There is an effect of increasing the stability of wearing. Moreover, since the basic structure which is a ring body is maintained although curvature is formed in an upper half part and a lower half part, there exists an effect which can be mounted | worn without producing discomfort to a patient.

  In addition, the length of the maximum diameter line in the upper half is made longer than the length of the maximum diameter line in the lower half, so that the upper conjunctival sac is relatively deep and the lower conjunctival sac is relatively accurate. Therefore, there is an effect that the stability of the attachment of the conjunctival sac to the conical conjunctiva is further increased.

  In addition, by relatively reducing the cross-sectional area of the upper half where the upper oculi levator muscle is located nearby, and relatively increasing the cross-sectional area of the lower half where the upper oculi levator muscle is not present nearby, Stable attachment of the conjunctival sac to the conjunctival conjunctiva because it is tightly attached to the upper conjunctival sac that is difficult to deform to the heel side and the lower conjunctival sac that is relatively easy to deform to the heel side There is an effect of higher sex.

It is sectional drawing of the mounting state of the 1st example of the form for implementing the conjunctival sac mounting tool which concerns on this invention. It is a front view of FIG. It is the figure which cancelled | released mounting | wearing of FIG. FIG. 4 is a central cross-sectional view of FIG. 3. It is a front view of the mounting state of the 2nd example of the form for implementing the conjunctival sac mounting tool which concerns on this invention. It is sectional drawing of the principal part of the 3rd example of the form for implementing the conjunctival sac wearing tool which concerns on this invention. It is sectional drawing of the principal part of the 4th example of the form for implementing the conjunctival sac wearing tool which concerns on this invention.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the conjunctival sac wearing tool which concerns on this invention is demonstrated based on drawing.

  1 to 3 show a first example of an embodiment for carrying out the conjunctival sac wearing device according to the present invention.

  In the first example, a complete annular ring having a shape approximating an ellipse is shown.

  The first example is composed of a central part 1, an upper half part 2, and a lower half part 3 formed by continuous integration with a metal material, a synthetic resin material or the like.

  The central part 1, the upper half part 2, and the lower half part 3 have elasticity as a whole. As the metal material, a metal material having corrosion resistance and causing no reaction such as allergy to the human body is selected. As the synthetic resin material, a tetrafluoroethylene resin (for example, trade name Teflon “trade name of DuPont”) which has water resistance and does not cause a reaction such as allergy to the human body is selected.

  The central portion 1 is a portion located near the center line X passing through the center of the pupil 20 of the eyeball 10 and is formed in a circular shape with a small cross section.

  The upper half portion 2 is a portion located above the center line X passing through the center of the pupil 20 of the eyeball 10, and the cross-sectional shape is formed in a circular shape having a larger diameter than the central portion 1. The upper half 2 is attached to the conical conjunctiva 30a of the upper conjunctival sac 30, and the bulbar conjunctiva 30b and the conjunctival conjunctiva 30c are long and relatively deep (in contrast to the lower conjunctival sac 40). Corresponding to the upper conjunctival sac 30, the length a of the maximum diameter line orthogonal to the center line X is formed relatively long (in contrast to the lower half 3) and enters the back side of the eyeball 10. It is curving from the center part 1 so that it can do (refer FIG. 3, FIG. 4).

  The lower half 3 is a portion located below the center line X passing through the center of the pupil 20 of the eyeball 10, and the cross-sectional shape is formed in a circle having a larger diameter than the upper half 2. The lower half 3 is attached to the conical conjunctiva 40a of the lower conjunctival sac 40, and the ball conjunctiva 40b and the conjunctiva 40c are short and relatively deep (in contrast to the upper conjunctival sac 30). Corresponding to the lower conjunctival sac 40, the length b of the maximum diameter line orthogonal to the center line X is formed relatively short (in contrast to the upper half 2) and enters the back side of the eyeball 10. It is curved from the central part 1 so that it can be performed (refer FIG. 3, FIG. 4).

  According to the first example, since the entire body is made of a ring body, the upper and lower eyelids 50 and 60 are opened and inserted between the eyelids 50 and 60 and the eyeball 10 so as to contract against the elasticity. In this manner, the upper and lower conjunctival sac 30 and 40 can be elastically attached to the circular lid portion conjunctiva 30a and 40a. Therefore, as with the conjunctival sac wearing device according to Patent Document 1 described above, the patient is slightly uncomfortable at the time of wearing, but hardly causes discomfort after wearing.

In the state in which the first example is mounted, the upper half 2 and the lower half 3 are curved and positioned on the back side of the eyeball 10 having a spherical shape, so that the elasticity of the conical sac 30,40 is the conical sac of the conjunctival sac 30,40. It will act so that 30a, 40a may be pressed toward the back side along the outside surface of eyeball 10 (refer to Drawing 1).
Further, the upper half 2 and the lower half 3 have a size corresponding to the depth of the upper and lower conjunctival sac 30, 40, so that the upper half 2 and the lower half 3 are the lids of the conjunctival sac 30, 40. It is accurately mounted on the partial conjunctiva 30a, 40a. In addition, by relatively reducing the cross-sectional area of the upper half 2 where the upper levator ani muscle exists nearby, and relatively increasing the cross-sectional area of the lower half 3 where the upper oculi levator muscle does not exist nearby, The upper conjunctival sac 30 that is relatively difficult to deform to the heel side and the lower conjunctival sac 40 that is relatively easy to deform to the heel side are closely attached. Therefore, the upper half 2 and the lower half 3 are securely attached to the conical conjunctiva 30a and 40a of the conjunctival sac 30, 40, and the attachment stability of the conjunctival sac 30, 40 to the conical conjunctiva 30a and 40a is stable. Becomes higher.

  Further, the direction of the action of elasticity effectively extends the conjunctival sac 30b and 40b of the conjunctival sac 30 and 40 which are mainly relaxed along the eyeball 10. Therefore, the stretched state of the bulbous conjunctiva 30b, 40b of the conjunctival sac 30, 40 is easily maintained, and the operation of conjunctival laxosis and the administration of eye drops are facilitated.

  Further, maintaining the stretched state of the bulbar conjunctiva 30b, 40b of the conjunctival sac 30, 40 is to clarify the outer appearance of the eyelids 50, 60 (so-called eyes are crisp) and may be used for cosmetic purposes. it can.

  FIG. 5 shows a second example of an embodiment for carrying out the conjunctival sac wearing device according to the present invention.

  In the second example, an incomplete annular (C-shaped) ring body having a shape approximating an ellipse is shown.

  According to the 2nd example, in addition to having the same operation and effect as the 1st example, a part of the central portion 1 is cut off, and exposure from the upper and lower eyelids 50 and 60 is reduced. Appearance of wearing is improved.

  FIG. 6 shows a third example of an embodiment for carrying out the conjunctival sac wearing device according to the present invention.

  In the third example, the main body 1, the upper half 2, and the lower half 3 are flattened in cross section.

  According to the third example, since the contact area of the conjunctival sac 30 and 40 in the upper half 2 and the lower half 3 with the cap lid conjunctiva 30a and 40a is increased, the conjunctiva in the upper half 2 and the lower half 3 The stability of the attachment of the sac 30, 40 to the circular lid conjunctiva 30a, 40a is further increased.

  FIG. 6 shows a fourth example of an embodiment for carrying out the conjunctival sac wearing device according to the present invention.

  In the fourth example, the body part 1, the upper half part 2, and the lower half part 3 of the second example are formed of a synthetic resin material, and a metal core is formed inside the body part 1, the upper half part 2, and the lower half part 3. The material 4 is incorporated.

  According to the fourth example, it is possible to easily provide suitable elasticity by adjusting the metal core 4.

  As described above, in addition to the illustrated examples, the core material 4 in the fourth example is formed of a shape memory alloy, and the upper half part 2 and the lower half part 3 are body temperature and the conical capsules 30a and 40a of the conjunctival sac 30 and 40. It is also possible to change the shape into a shape that can be accurately attached to the body.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Upper half part 3 Lower half part 30,40 Conjunctival sac 30a, 40a Caps part conjunctiva X Centerline a, b Length of largest diameter line

Claims (2)

  In a conjunctival sac wearing device comprising a ring body attached to the conjunctiva of the upper and lower conjunctival sac having elasticity, a central part located near the central line passing through the center of the pupil of the eyeball, and the central line The upper half of the upper conjunctival sac attached to the conjunctival conjunctiva of the upper conjunctiva and the lower half of the lower conjunctival sac attached to the conjunctival conjunctiva of the lower conjunctival sac The length of the maximum diameter line orthogonal to the center line of the upper half is longer than the length of the maximum diameter line orthogonal to the center line of the lower half, and the cross-sectional area of the upper half is A conjunctival sac wearing device characterized in that it is set smaller than the area, and the upper half and the lower half are curved from the center so that they can enter the back side of the eyeball.   2. The conjunctival sac wearing device according to claim 1, wherein the main body portion, the upper half portion, and the lower half portion are formed of a synthetic resin material, and a metal core is embedded in the main body portion, the upper half portion, and the lower half portion. A conjunctival sac wearing device characterized by being

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