JP7176193B2 - Eyelid opening device - Google Patents

Description

The present invention relates to an eyelid opening device.

Patent Literature 1 discloses an eyelid restraining part that keeps the upper eyelid and the lower eyelid of the person to be measured open by contacting the skin around the eyeball of the person to be measured.
Patent Literature 2 discloses an eyelid speculum having a flexible upper ring that surrounds the eyelid and is worn in contact with the face.
Patent Document 3 discloses a configuration having an elastic arm directed toward the lower eyelid from the nose pad main body.

JP 2016-107115 A JP 2009-254427 A JP-A-2000-262549

In ophthalmology and the like, there are cases where it is required to maintain the eyelid open state. can be suppressed. By the way, a gap may occur between the restricting portion and the eyelid due to unevenness of the human face, etc. In this case, the eyelid tends to close.
An object of the present invention is to make it more difficult for a gap to occur between the eyelid and the eyelid-closing restricting portion, as compared with the case where the eyelid-closing restricting portion is simply provided at a position facing the eyelid. That's what it is.

The invention according to claim 1 is arranged in contact with the eyelid that covers the eyeball of the subject, and is connected to a regulating portion that regulates closing of the eyelid, and a portion of the regulating portion that is arranged on the inner corner of the eye, and is connected to the subject. a protrusion projecting in a direction away from the face of the subject, an outer-eye side portion connected to a portion of the regulation portion arranged on the outer-eye side, and a nose-side pull that pulls the protrusion toward the nose of the subject and an eye-outer-eye-side pulling means for pulling the outer-eyes-side portion toward the ear side located opposite to the nose side across the eyeball, wherein the outer-eyes-side portion is pulled in a direction away from the face of the subject. The eyelid side pulling means is an eyelid opening device that pulls the eyelids side portion protruding in a direction away from the subject's face toward the ear side .
In the invention according to claim 2, the portion of the projecting portion that is pulled by the nose-side pulling means is greater than the portion of the eye corner-side portion that is pulled by the eye corner-side pulling means. An eyelid retractor according to claim 1, located on the side away from the subject's face.
According to the third aspect of the present invention, the protrusion is pulled by the nose-side pulling means to rotate the restricting portion about a rotation axis extending in a direction from the lower eyelid covering the eyeball to the upper eyelid. 2. The eyelid-opening device according to claim 1, wherein the rotating moment acts on the restricting portion.
The invention according to claim 4 is the eyelid-opening device according to claim 1, wherein the nose-side pulling means pulls the tip of the projecting part in the projecting direction toward the subject's nose.
The invention according to claim 5 is arranged in contact with the eyelid that covers the eyeball of the subject, and includes a regulating portion that regulates closing of the eyelid, and an inner-canthus side connected to a portion of the regulating portion that is arranged on the inner-canthus side. a portion on the outer corner of the eye that is connected to a portion of the restricting portion that is arranged on the outer side of the eye; and a nose-side pulling means that is connected to the inner corner of the eye and pulls the inner corner of the eye toward the nose of the subject. and ear-side pulling means connected to the outer-eye-side portion and pulling the outer-eye-side portion to the ear side located opposite to the nose side across the eyeball, wherein the inner-eye-side portion and the nose-side pulling means are provided. The connection point with the means is located on the side farther from the subject's face than the connection point between the eye corner side portion and the ear side pulling means, and the eye corner side portion is separated from the subject's face. The ear-side pulling means is an eyelid-opening device that pulls the outer-eye-side portion that protrudes in a direction away from the subject's face toward the ear .
The invention according to claim 6 is the eyelid-opening device according to claim 5 , wherein the inner corner side portion protrudes in a direction away from the subject's face.

According to the inventions of Claims 1 to 6 , a gap is generated between the eyelid and the eyelid restricting portion that restricts the closing of the eyelid, compared to the case where the restricting portion that restricts the closing of the eyelid is simply provided at a position facing the eyelid. You can make things harder to happen.

(A) and (B) are diagrams for explaining the eyelid-opening device of the present embodiment. It is the figure which showed the state which mounted|worn the eyelid-opening apparatus with respect to the test subject. (A) is a diagram showing a state in which an eyelid opening device is attached to a subject, and (B) is a diagram showing a comparative example. (A) and (B) are diagrams showing other configuration examples of the eyelid-opening device. (A) to (D) are other configuration examples of the eyelid opening device. It is the figure which showed the other structural example of the eyelid-opening apparatus. It is the figure which showed the other structural example of the eyelid-opening apparatus. It is the figure which showed the other structural example of the eyelid-opening apparatus. (A) and (B) are diagrams showing other configuration examples of the eyelid-opening device. It is the figure which showed the other structural example of the eyelid-opening apparatus. It is the figure which showed the state which attached the eyelid-opening apparatus to the test subject. It is a figure at the time of seeing a subject's skull from the front of a subject. FIG. 11 is a view of the eyelid-opening device viewed from the direction of arrow XIII in FIG. 10; FIG. 5 is a diagram showing changes in the eyelid-opening function and changes in the feeling of wearing the eyelid-opening device when the distance between the pulling force receiving portion and the contact portion is changed.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIGS. 1A and 1B are diagrams illustrating an eyelid opening device 1 of this embodiment.
FIG. 1(A) is a view of the eyelid-opening device 1 viewed from the eyelid-contacting side, and FIG. 1(B) is a view of the eyelid-opening device 1 from the side opposite to FIG. 1(A). FIG. 10 is a diagram of a case;
In other words, FIG. 1(A) is a view of the eyelid opening device 1 viewed from the side facing the subject, and FIG. 1(B) is a view of the eyelid opening from the side opposite to FIG. 1 is a view of the device 1; FIG.

As shown in FIG. 1(A), the eyelid opening device 1 includes an eyelid contact member 100 to be placed on the subject's eyelid, a support member 200 for supporting the eyelid contact member 100, the eyelid contact member 100, and the support member 200. A rubber cord 300 is provided as a fixing member for fixing to.
The eyelid contact member 100 is formed in an annular shape and is made of a soft member such as rubber or resin material. In addition, the eyelid contact member 100 is provided with a regulating portion 110 that regulates closing of the upper and lower eyelids that cover the eyeballs of the subject.

More specifically, in this embodiment, a first restricting portion 111 and a second restricting portion 112 are provided as the restricting portion 110 .
The 1st regulation part 111 contacts one eyelid of a subject's upper eyelid and a lower eyelid (it presses against one eyelid), and regulates closing of this one eyelid.
The second restricting part 112 comes into contact with the other eyelid (presses against the other eyelid) to restrict the closing of the other eyelid.

In the following description, a case where the eyelid contact member 100 is arranged in contact with the subject's right eye (the left eye when the subject is viewed from the front) will be described.
In this case, the first restricting part 111 contacts the upper eyelid, and the second restricting part 112 contacts the lower eyelid. The eyelid-opening device 1 of this embodiment can also be used for the left eye, and in this case also, the first restricting portion 111 contacts the upper eyelid and the second restricting portion 112 contacts the lower eyelid.
As shown in FIG. 1A, each of the first restricting portion 111 and the second restricting portion 112 includes an inner-canthus-side portion 113M arranged on the inner-canthus side of the subject and an inner-canthus-side portion 113M arranged on the outer-canthus side of the subject. A side portion 113J is provided.

A support member 200, which is an example of a support portion, is also formed in an annular shape as shown in FIG. 1(B). The support member 200 is made of a metal material and has rigidity. In this embodiment, the eyelid contact member 100 is attached to this support member 200 .
When the eyelid-opening device 1 is attached to the subject, the support member 200 is positioned further away from the subject's face than the first restricting portion 111 (see FIG. 1A) and the second restricting portion 112 .

A rubber cord 300, which is an example of a pulling member, is composed of a nose-side rubber cord 310 and an ear-side rubber cord 320, as shown in FIG. 1(A).
The nose-side rubber cord 310 is formed in an annular shape. The nose-side rubber cord 310 is attached to a portion of the support member 200 that is arranged on the inner corner side (nose side). The nose-side rubber string 310 is located on the nose side of the subject when the eyelid-opening device 1 is attached to the subject.

Furthermore, the nose-side rubber cord 310 is hooked and fixed to the subject's left ear (the right ear when the subject is viewed from the front).
In other words, the nose rubber cord 310 is attached to the ear located on the side opposite to the side on which the eyeball to be measured by the measuring device (not shown in FIG. 1) (measuring device for measuring the eyeball) is located. It is attached.
Further, the nose-side rubber cord 310 pulls the support member 200 toward the nose of the subject (the inner corner of the subject's eye).

When the eyelid-opening device 1 is attached to the subject, the ear-side rubber string 320 is attached to the subject's right ear side (the ear side opposite to the nose side, the left ear side when the subject is viewed from the front). positioned and hooked against this right ear and fixed.
In other words, the ear-side rubber cord 320 is attached to the ear located on the same side as the eyeball to be measured. The ear-side rubber cord 320 pulls the support member 200 toward the subject's ear side (subject's eye corner side).

Furthermore, in the present embodiment, the support member 200 is bent, and as shown in FIG. ) protrudes from the outer surface of the eyelid contact member 100 .
In this embodiment, a nose-side rubber cord 310 is attached to this protruding portion. Furthermore, in the present embodiment, a gap is provided between this portion and the eyelid contact member 100 as a result of the projection of a portion of the support member 200 .
In addition, in the present specification, the protruded portion of the support member 200 is hereinafter referred to as an inner corner side protruding portion 210 .

FIG. 2 is a diagram showing a state in which the eyelid-opening device 1 is worn on a subject. 2, illustration of the rubber cord 300 and the support member 200 is omitted, and only the eyelid contact member 100 is illustrated.
When the eyelid-opening device 1 is attached to the subject, the eyelid contact member 100 is pressed against a portion positioned around the subject's eyeball (eyeball of the right eye).
Specifically, the first restricting portion 111 of the eyelid contact member 100 is pressed against the upper eyelid, and the second restricting portion 112 of the eyelid contact member 100 is pressed against the lower eyelid. This prevents the upper and lower eyelids from closing.

FIG. 3(A) is a diagram showing a state in which the eyelid-opening device 1 is attached to a subject, and FIG. 3(B) is a diagram showing a comparative example.
As shown in FIG. 3(A), when the eyelid-opening device 1 of the present embodiment is attached to the subject, the nose-side rubber cord 310 is hooked to the left ear of the subject, and is located on the ear side of the right ear of the subject. A rubber cord 320 is hooked. Further, as described above, the eyelid contact member 100 is pressed against the upper and lower eyelids of the subject's right eye.

Furthermore, in the present embodiment, a nose-side rubber cord 310 is attached to the distal end portion 210A in the projecting direction of the inner corner side projecting portion 210, and the pulling force that pulls the distal end portion 210A toward the nose side is applied to the distal end portion 210A. works.
An ear-side rubber cord 320 is attached to the end of the support member 200 on the outer corner of the eye, and a pulling force that pulls the support member 200 toward the right ear acts on this end.

As in this embodiment, when a pulling force pulling toward the nose side (hereinafter referred to as "nose-side pulling force") acts on the distal end portion 210A of the inner corner side protrusion 210, an arrow 3A in FIG. , a rotational moment acts on the support member 200 to rotate the support member 200 counterclockwise.
As a result, the inner corner side portion 113M (see also FIG. 1A) of the restricting portion 110 (the first restricting portion 111 and the second restricting portion 112) is pressed against the eyelids (upper eyelid, lower eyelid). become. In other words, the inner corner side portion 113M of the restricting portion 110 is biased toward the eyelid.

Here, in the present embodiment, the support member 200 functions as a connecting portion connected to the restricting portion 110, and in the present embodiment, the connecting portion is connected by the rubber cord 300 to the subject's nose side and It is pulled to the right ear side of the subject (the ear side opposite to the nose side across the eyeball to be measured), and tension from the rubber string 300 acts on this connecting portion.
In the present embodiment, this tension is used to generate a rotational moment in the connecting portion to urge the inner corner side portion 113M toward the eyelid.

Further explaining, in this embodiment, as shown in FIG. The point is pulled toward the nose of the subject.
As a result, the support member 200 tends to rotate counterclockwise about the root portion of the inner corner side protrusion 210 . This rotation urges the inner corner side portion 113M toward the eyelid.

Furthermore, in the present embodiment, the distal end portion 210A of the inner corner side projecting portion 210 serves as a pulling force action point (hereinafter referred to as "nose side pulling force action point 90N") where a pulling force acts on the nose side. However, in the present embodiment, the inner corner side portion 113M is arranged on the side closer to the eyelid than the nose side pulling force action point 90N.
Here, in the present embodiment, the nose-side rubber cord 310, the inner-canthus-side protruding portion 210, etc. can be regarded as biasing means, and the portion of the restricting portion 110 arranged on the inner-canthus side is controlled by this biasing means. (Intra-canthus side portion 113M) is urged toward the eyelid.

FIG. 3B is a diagram showing a comparative example of the eyelid-opening device 1. FIG.
In this comparative example, the inner corner side protrusion 210 is not provided. In this case, as shown in FIG. 3B, the eyelid-opening device 1 has the same shape as a general eyepatch. In this case, the part of the regulation part 110 that is arranged on the inner corner of the eye tends to be lifted from the subject's eyelid.
Specifically, the human face has a recessed inner corner of the eye, and a part of the face protrudes in the part where the nose is provided. In this case, a portion of the restricting portion 110 near the inner corner of the eye tends to be lifted from the eyelid.
On the other hand, in the present embodiment, the restricting portion 110 can easily press against the eyelid even on the inner corner of the eye, and the eyelid can be easily kept open.

4A and 4B are diagrams showing other configuration examples of the eyelid-opening device 1. FIG.
In the configuration example shown in FIG. 4A, the support member 200 is also bent on the side of the outer corner of the eye, and the side of the outer corner of the eye is provided with a protruding portion 220 protruding away from the subject's face. An ear-side rubber cord 320 is attached to the distal end portion 220A of the eye corner-side projecting portion 220. As shown in FIG.
When the outer eye corner side projecting portion 220 is provided in this manner, a rotational moment that rotates the supporting member 200 clockwise acts on the supporting member 200, and the outer eye corner side portion 113J of the restricting portion 110 is directed toward the eyelid. It becomes easy to be energized.
As a result, the restricting portion 110 can more reliably press against the eyelid lateral side of the eyelid as compared with the case where the lateral lateral protruding portion 220 is not provided.

More specifically, in this configuration example, the distal end portion 220A of the eye corner side protruding portion 220 serves as a site where the pulling force from the ear side rubber cord 320 acts (hereinafter referred to as "ear side tensile force acting site 90K"). A pulling force from the ear-side rubber cord 320 acts on the tip portion 220A (tension acts).
As a result, a rotational moment that rotates the support member 200 clockwise acts on the support member 200, and this rotational moment urges the eye corner side portion 113J of the restricting portion 110 toward the eyelid.

To explain further, in this configuration example, as shown in FIG. 4A, the eye corner side portion 113J is arranged on the side closer to the eyelid than the ear-side tensile force action point 90K.
In this configuration example, when the support member 200 tries to rotate clockwise due to the action of the rotational moment, the eye corner side portion 113J is pressed against the eyelid.

In addition, this configuration example can suppress the lifting of the eye corner side portion 113J from the eyelid due to the pulling force toward the nose side.
Here, for example, if the pulling force toward the nose side is large, the outer eye corner side portion 113J may float. The side portion 113J becomes less likely to float.
Here, the ear-side elastic cord 320, the outer-eye-side protruding portion 220, and the like can be regarded as biasing means. is energized.

FIG. 4B is a diagram showing another configuration example of the eyelid-opening device 1. As shown in FIG.
In this configuration example, it is configured such that the positional relationship between the nose-side tensile force acting portion 90N and the inner corner side portion 113M can be changed.
In other words, this configuration example is configured to be able to change the separation distance between the nose-side tensile force acting portion 90N and the inner corner side portion 113M.

Specifically, in this configuration example, the inner corner side protruding portion 210 can be displaced with respect to the main body portion 205 of the support member 200, so that the nose side tensile force application point 90N and the inner corner side portion 113M are displaced. You can change the positional relationship with and the separation distance.
More specifically, in this configuration example, the inner corner-side protrusion 210 rotates around the root portion of the inner corner-side protrusion 210. The positional relationship and the separation distance between the pulling force application point 90N and the inner corner side portion 113M are changed.

Further, in this configuration example, the positional relationship between the ear-side tensile force acting portion 90K and the eye corner side portion 113J can be changed. In other words, it is possible to change the separation distance between the ear-side tensile force acting portion 90K and the corner-of-the-eye side portion 113J.
More specifically, in the same manner as described above, the outer-eye corner-side protrusion 220 can be rotated around the root portion of the outer-eye corner-side protrusion 220, and by rotating the outer-eye corner-side protrusion 220, It is possible to change the positional relationship and the separation distance between the pulling force acting portion 90K and the corner side portion 113J.

In addition, in the configuration example shown in FIG. 4B, a fixing mechanism (not shown) such as a screw for fixing the inner corner side projecting portion 210 and the inner corner side projecting portion 220 to the main body portion 205 is also provided. After rotating the inner corner side protrusion 210 and the outer corner side protrusion 220, the inner corner side protrusion 210 and the inner corner side protrusion 220 are fixed to the main body 205 using this fixing mechanism.

Here, as in the configuration example shown in FIG. 4(B), it is possible to change the positional relationship and separation distance between the nose-side tensile force acting portion 90N and the inner corner side portion 113M, or change the ear-side tensile force acting portion 90K and the outer corner side of the eye. If the positional relationship and separation distance with respect to the portion 113J can be changed, the size and shape of the eyelid opening device 1 can be matched to the size of the subject's head, the shape of the subject's face, and the like.

In other words, the eyelid-opening device 1 is assumed to be used by a plurality of different subjects, and if the positional relationship and the separation distance can be changed as described above, the shape and size of the eyelid-opening device 1 can be changed. It becomes possible to match the subject wearing the eyelid device 1 .
In this example, the protrusions (the inner corner side protrusion 210 and the outer corner side protrusion 220) were allowed to be displaced on both the nose side and the ear side, but the displacement was allowed to be performed only on one side. may

5A to 5D are other configuration examples of the eyelid-opening device 1. FIG.
In the configuration example shown in FIGS. 5(A) and (B), as shown in FIG. 5(A), an elastic member 400 is provided that biases the nose-side tensile force action point 90N in a direction away from the inner corner side portion 113M. ing.
More specifically, in this configuration example, a coil spring (compression spring) is provided as the elastic member 400 . Further, in this configuration example, an elastic member 400 is provided between the inner corner side projecting portion 210 and the inner corner side portion 113M.
Furthermore, in this configuration example, the inner corner side protrusion 210 is rotatable around the root portion of the inner corner side protrusion 210 .

Here, in this configuration example, the pressing load acting on the eyelid can be reduced while pressing the inner corner side portion 113M against the subject's eyelid.
Here, depending on the shape of the subject's face, the size of the eyelid opening device 1, and the like, there is a possibility that the inner corner side portion 113M is strongly pressed against the subject's eyelid. On the other hand, in this configuration example, when the inner corner side portion 113M is strongly pressed against the eyelid, as shown in FIG. start running away.
As a result, the inner-canthus-side portion 113M is pressed against the eyelid, and the pressing load acting on the eyelid can be reduced.

In the above description, a coil spring is used as the elastic member 400. However, the elastic member 400 is not limited to a coil spring, and a torsion spring may be used as shown in FIG. Alternatively, a leaf spring may be used as shown in FIG. 5(D).
In addition, in the configuration examples shown in FIGS. 5A to 5D, the elastic member 400 is provided on the inner corner side portion 113M side, but the elastic member 400 may be provided on the outer corner side portion 113J side. Specifically, for example, an elastic member 400 may be provided between the corner-of-the-eye protrusion 220 shown in FIG. 4A and the corner-of-the-eye portion 113J.

FIG. 6 is a diagram showing another configuration example of the eyelid-opening device 1. As shown in FIG.
In the above description, the eyelid contact member 100 and the support member 200 are provided as two parts, but in the configuration example shown in FIG. 6, the eyelid contact member 100 and the support member 200 are integrated into one part. In this case, this integrated member (member denoted by reference numeral 6A in the figure) is made of rubber or resin material.
Furthermore, in this configuration example, similarly to the above, the inner corner side portion 113M is arranged closer to the eyelid than the nose-side pulling force action point 90N, and closer to the eyelid than the ear-side pulling force action point 90K. , and an eye corner side portion 113J.

Here, in the configuration example shown in FIG. away from the subject's face.
On the other hand, in the configuration example shown in FIG. 6, by increasing the thickness of the integrated member (the member indicated by reference numeral 6A), the nose-side tensile force acting portion 90N and the ear-side tensile force acting portion 90K can be adjusted to the subject. away from the face of

FIG. 7 is a diagram showing another configuration example of the eyelid-opening device 1. As shown in FIG.
The eyelid-opening device 1 is provided with a positioning portion 280 that is positioned with respect to the measuring device 900 that measures the eyeball.
In the eyeball measurement, the subject takes a posture so that the line of sight is directed toward the measuring device 900 . In other words, the subject's face is directed toward the measuring device 900 . At this time, the eyeball is positioned at a position facing the measuring device 900 .

Furthermore, in this configuration example, the eyelid-opening device 1 is pressed against the measuring device 900 . Specifically, the positioning part 280 is pressed against the positioned part 910 provided in the measuring device 900 .
More specifically, in this configuration example, unevenness is formed on both the positioning portion 280 and the positioned portion 910 , and the positioning portion 280 fits into the positioned portion 910 of the measuring device 900 .

As a result, the eyeball is positioned with respect to the measuring device 900, and the measurement accuracy of the eyeball is improved compared to the case where the eyeball is not positioned.
In this configuration example, the positioning portion 280 is fixed to the inner corner side protrusion 210 and the outer corner side protrusion 220, but the positioning portion 280 is fixed to the inner corner side protrusion 210 and the outer corner side protrusion. 220 , but may be the body portion 205 of the support member 200 .

FIG. 8 is a diagram showing another configuration example of the eyelid-opening device 1. As shown in FIG.
In this configuration example, the nose-side tensile force action point 90N is located on the other side region 8B side opposite to the one side region 8A side where the eyeball (right eyeball) to be measured is located.
Specifically, in this configuration example, two regions (one side region 8A (right ear side region) and other side region 8B (left ear side region)) facing each other across the subject's nose are provided. However, the nose-side tensile force action point 90N is located in the other side region 8B, which is different from the one side region 8A where the eyeball to be measured is located.

More specifically, in this configuration example, the inner corner side protrusion 210 is arranged so as to straddle the nose (the inner corner side protrusion 210 is arranged so as to cover a part of the nose), and the nose side rubber cord 310 A nose-side tensile force acting point 90N where tension acts is located in the other side region 8B.
Furthermore, in this configuration example, as described above, the inner corner side portion 113M is arranged on the side closer to the eyelid than the nose-side tensile force application location 90N, and the rotational moment is applied to the support member 200 as described above. ing.

Furthermore, in this configuration example, the nose-side tensile force application location 90N is arranged closer to the subject's face than in the configuration shown in FIG. 4A and the like.
In this configuration example, since the rigidity of the inner corner side protruding portion 210 that greatly extends toward the other side region 8B is utilized, the pulling force on the nose side can be reduced (the tension generated in the rubber cord 300 can be reduced). It becomes difficult for the ear to hurt due to
Further, in this configuration example, the nose-side tensile force acting point 90N is positioned at a point away from the eyeball to be measured.

9A and 9B are diagrams showing other configuration examples of the eyelid-opening device 1. FIG.
9A is a view of the eyelid-opening device 1 viewed from the opposite side of the subject, and FIG. 9B is a view of the eyelid-opening device 1 from the direction of arrow IXB in FIG. 9A. It is a diagram in the case of
In this configuration example, as shown in FIG. 9A, the support member 200 is formed in an annular shape as described above. Furthermore, in this configuration example, a protrusion such as the inner corner side protrusion 210 described above is not provided, and the support member 200 is formed to extend along one plane (virtual plane). there is

Also in this configuration example, similarly to the above, when the eyelid-opening device 1 is attached to the subject, the annular support member 200 is pressed against the portion positioned around the eyeball of the subject (via the eyelid contact member 100). pressed down).
Further, in this configuration example, the eyelid contact member 100 is not arranged along the one plane, and as shown in FIG. 9A and 9B) and toward the subject's eyelid.
As a result, a portion of the eyelid contact member 100 is pressed against the inner corner side portion of the eyelid in the same manner as described above.

Further, in this configuration example, when the inner corner side portion 113M is pressed against the eyelid, the eyelid contact member 100 bends so that the inner corner side portion 113M approaches the support member 200. FIG.
More specifically, as indicated by an arrow 9C in FIG. 9B, the inner corner side portion 113M moves toward the support member 200 side. As a result, the pressure acting on the subject's eyelid is reduced compared to a configuration in which the eyelid contact member 100 does not bend, and the subject is less likely to feel pain.
In addition, although FIG. 9 illustrates the case where the inner corner side portion 113M is separated from the support member 200 as an example, the inner corner side portion 113J may be separated from the support member 200. FIG. Also, both the inner corner side portion 113M and the outer corner side portion 113J may be separated from the support member 200 .

(others)
In the above, the eyelid-opening device 1 is fixed to the subject using the rubber cord 300, but the eyelid-opening device 1 may be fixed not only by the rubber cord 300, but also by using, for example, a band-shaped member. good.
Specifically, for example, instead of each of the nose-side rubber cord 310 and the ear-side rubber cord 320, a belt-like member is provided, and each end of this belt-like member is placed, for example, at a position facing the back of the subject's head. You may fix the eyelid-opening apparatus 1 to a test subject by mutually fixing with .
Further, the eyelid contact member 100 is attached to a headband-like member (an elastic annular member), and the eyelid contact member 100 is fixed to the subject by fixing the headband to the subject's head. may be performed.
That is, the member for fixing the eyelid-opening device 1 to the subject may be of any shape or material as long as the member can cause the eyelid contact member 100 to function so as to restrict the closing of the eyelids.

Further, in the above description, the two restricting portions 110 of the first restricting portion 111 and the second restricting portion 112 are provided, and the restricting portion 110 presses against both the upper eyelid and the lower eyelid. One of the restricting portions 111 and the second restricting portions 112 may be omitted, and the restricting portion 110 may press against only one of the upper eyelid and the lower eyelid.

Alternatively, a measurement device for measuring the eyeball may be attached to the eyelid-opening device 1, and the eyeball may be measured simply by attaching the eyelid-opening device 1 to the subject.
Furthermore, in the above description, two configurations, a configuration in which only the inner corner side protrusion 210 is provided, and a configuration in which the inner corner side protrusion 210 and the inner corner side protrusion 220 are provided, are mainly described. A configuration in which only the corner-of-the-eye side protruding portion 220 is provided without providing it may be employed.

FIG. 10 is a diagram showing another configuration example of the eyelid-opening device 1. As shown in FIG. FIG. 11 is a diagram showing a state in which the eyelid-opening device 1 is attached to the subject.
As shown in FIG. 10, also in this configuration example, an eyelid contact member 100 to be placed on the subject's eyelid is provided. The eyelid contact member 100 is formed in an annular shape (the outer peripheral edge is formed in an elliptical shape). 10 and 11, the support member 200 shown in FIG. 1 and the like is not provided.

The eyelid contact member 100 is provided with the regulating portion 110 that is placed in contact with the upper eyelid and the lower eyelid that cover the eyeballs of the subject and regulates the closing of the upper eyelid and the lower eyelid, as described above. More specifically, first restricting portion 111 and second restricting portion 112 are provided as restricting portion 110 .
The first regulation part 111 contacts one eyelid of the subject's upper eyelid and lower eyelid and regulates closing of this one eyelid. The second restricting part 112 contacts the other eyelid and restricts the closing of the other eyelid.

As shown in FIG. 11 , each of the first restricting portion 111 and the second restricting portion 112 is configured to extend from the inner corner side to the outer corner side of the subject's eye (eyeball) when the eyelid-opening device 1 is fixed to the subject. placed. As shown in FIG. 10 , each of the first restricting portion 111 and the second restricting portion 112 has an inner corner side end portion 118 and an inner corner side end portion 119 .
Furthermore, in this configuration example, as shown in FIG. 10, the separation distance L1 between the first restricting portion 111 and the second restricting portion 112 is 19.0 mm or more and 34.0 mm or less.

The separation distance L1 between the first restricting portion 111 and the second restricting portion 112 is the first restricting portion when the eyelid-opening device 1 is not attached to the subject (when the eyelid-opening device 1 is in the natural state). It refers to the separation distance between the edge portion 111A of the second restricting portion 112 side of the second restricting portion 111 and the edge portion 112A of the second restricting portion 112 on the first restricting portion 111 side.
More specifically, the separation distance L1 between the first restricting portion 111 and the second restricting portion 112 is the direction in which the nose-side pulling member 370 (details will be described later) extends (the direction indicated by the dashed line 10D in the figure). It is the distance between the edge 111A and the edge 112A in the orthogonal direction, and refers to the distance at the portion where this distance is the maximum.

As shown in FIG. 11, the nose-side pulling member 370 extends from the subject's eyeball side (the eyeball side to be measured by the measuring device (not shown)) (left eye side in the figure) toward the subject's nose side. It is a member that is arranged to extend and pulls the eyelid contact member 100 (regulating portion 110) toward the nose.

Furthermore, as shown in FIG. 11, in the present embodiment, the eyelid contact member is arranged to extend from the subject's eyeball side toward the subject's ear side (the ear side located on the same side as the eyeball to be measured). An ear-side pulling member 380 is provided for pulling 100 (restricting portion 110) toward the ear.
In other words, in this embodiment, the ear-side pulling member 380 is provided for pulling the eyelid contact member 100 to the side opposite to the nose side across the subject's eyeball (the eyeball to be measured).
The ear-side pulling member 380 is arranged so as to sandwich the subject's eyeball and extend toward the side opposite to the nose side. The contact member 100 (regulating portion 110) is pulled.

Further, in this configuration example, as shown in FIGS. 10 and 11, a protruding portion 500 is provided that protrudes in a direction away from the subject's face from the portion of the eyelid contact member 100 that is arranged on the inner corner of the eye. ing. Here, in the present embodiment, as the protrusions 500, two protrusions 500 of a first protrusion 510 and a second protrusion 520 are provided.
In this embodiment, a nose-side pulling member 370 is attached to the distal end of each projecting portion 500 in the projecting direction. Each of the protrusions 500 receives a tensile force of .

In the present embodiment, the tip of each projection 500 in the direction of projection serves as a tensile force receiving portion 530 that receives a tensile force. It receives the pulling force from the pulling member 370 .
More specifically, in this embodiment, the end of the nasal tension member 370 is fixed to the tip of each of the protrusions 500, each of the protrusions 500 being attached to its tip. to receive the pulling force from the nasal pulling member 370 .

The eyelid-opening device 1 of this embodiment is made of an elastic material such as a rubber material.
The eyelid-opening device 1 of the present embodiment is composed of a single component, and the eyelid-contacting member 100, the nose-side pulling member 370, the ear-side pulling member 380, and the protruding portion 500 are integrally formed. ing.
In addition, the projecting portion 500 has a thicker portion than the eyelid contact member 100, the nose-side pulling member 370, and the ear-side pulling member 380, and has high rigidity. In addition, the projecting portion 500 has rigidity necessary to press the restricting portion 110 against the eyelid by the rotational moment. On the other hand, the eyelid contact member 100, the nose-side pulling member 370, and the ear-side pulling member 380 are flexible enough to follow the shape of the subject's face when the eyelid opening device 1 is worn. there is
In addition, since the first restricting portion 111 and the second restricting portion 112 of the eyelid contact member 100 are made of a material having elasticity such as a rubber material, the first restricting portion 111 and the second restricting portion 112 of the eyelid contact member 100 can be adjusted when the eyelid opening device 1 is attached. Also, the position of the second restricting portion 112 (such as the separation distance L1 between the first restricting portion 111 and the second restricting portion 112) can be adjusted. That is, in a state where the eyelid-opening device 1 is worn, the first restricting portion 111 or the second restricting portion 112 can be finely adjusted to a more preferable position.

In this embodiment, as shown in FIG. 11, the pulling force receiving portion 530 is arranged on the side farther from the subject's face than the eyelid contact member 100 (regulating portion 110).
Thereby, in the present embodiment, as shown in FIG. 11 , a rotational moment M that rotates the eyelid contact member 100 about the rotation axis 11A acts on the eyelid contact member 100 .
In addition, a rotational moment M acts on the eyelid contact member 100 to rotate the eyelid contact member 100 around a rotation axis 11A along the direction from the lower eyelid covering the subject's eyeball to the upper eyelid.
More specifically, the rotational moment that causes the portion of the eyelid contact member 100 located on the inner side of the eye to approach the subject's face and the portion of the eyelid contact member 100 located on the outer side of the eye to move away from the subject's face. M acts on the eyelid contact member 100 .

Furthermore, in the present embodiment, as shown in FIG. 11, when the subject's face to which the eyelid-opening device 1 is attached is viewed from the front, a straight line passing through the inner corner of one eye and the inner corner of the other eye of the subject A first projecting portion 510 and a second projecting portion 520 are located at locations off the top of 11B.
In other words, in the present embodiment, the tensile force receiving portion 530 provided on each of the first projecting portion 510 and the second projecting portion 520 is aligned with the straight line 11B passing through the inner corner of one eye and the inner corner of the other eye of the subject. Located off the top.

Specifically, in the present embodiment, the first projecting portion 510, which is one projecting portion 500, is positioned on one of the one area and the other area facing each other across the straight line 11B. Also, the second projecting portion 520, which is the other projecting portion 500, is positioned on the other area side.
More specifically, the first projecting portion 510 is positioned above the straight line 11B in FIG. side).
In other words, in the present embodiment, in the direction from the lower eyelid side to the upper eyelid side of the subject (the direction indicated by the arrow 11C in the figure) (hereinafter referred to as the “vertical direction”), the first projecting portion 510 and the second The protrusions 520 are arranged to be offset from each other.

Furthermore, as shown in FIG. 10 , in this embodiment, a light passing portion 590 for passing light is provided between the first projecting portion 510 and the second projecting portion 520 .
More specifically, in the present embodiment, light that travels along a direction that intersects the normal to the subject's face and intersects the vertical direction (the direction indicated by reference numeral 11D in FIG. 11) (hereinafter , referred to as the "cross direction").

In other words, in this embodiment, the light passing portion 590 is provided between the tensile force receiving portions 530 provided on each of the first projecting portion 510 and the second projecting portion 520 .
Additionally, in the present embodiment, the first protrusion 510 and the second protrusion 520 are arranged in a state separated from each other, and there is a space between the first protrusion 510 and the second protrusion 520 to allow light to pass through. There is a gap of

In the measurement (examination) of an eyeball, light (measurement light) may travel from the subject's nose to the eyeball or from the eyeball to the nose. That is, there are cases where the light is irradiated across the eyeball. At this time, this light passes through the light passing portion 590 in this embodiment. By providing the light passage portion 590 in this way, it becomes possible to perform measurement at a wider angle.
The light passing portion 590 may be formed by separating the first projecting portion 510 and the second projecting portion 520 from each other and providing a gap therebetween. You may form by forming. In addition, for example, the light passing portion 590 may be formed by forming a member on the path along which light travels with a transparent material.

Further, when light is allowed to pass between the first projecting portion 510 and the second projecting portion 520 as in the present embodiment, the separation distance L3 between the first projecting portion 510 and the second projecting portion 520 (Fig. 11 See) is preferably 14 mm or more.
Here, the distance L3 between the first projecting portion 510 and the second projecting portion 520 is the distance between the first projecting portion 510 and the second projecting portion 520 in the distance between the first projecting portion 510 and the second projecting portion 520. 520 is the closest distance.

Here, for example, when measuring the cornea, the diameter of the cornea is about 13 mm at most. 510 and the second projecting portion 520 are easily positioned.
On the other hand, if the distance L3 between the first protrusion 510 and the second protrusion 520 is 14 mm or more, the first protrusion 510 and the second protrusion 520 are positioned on the optical path during measurement of the cornea. difficult to do.

FIG. 12 is a view of the subject's skull viewed from the front of the subject.
The human skull has an orbit 950, which is a depression in the skull in which the eyeballs fit.
In this embodiment, the first restricting part 111 and the second restricting part 112 are pressed against either the upper eyelid (not shown in FIG. 12) or the lower eyelid, and as shown in FIG. Of these, the rim portion 960 located around the eye socket 950 is pressed against.

More specifically, in the present embodiment, the separation distance L1 (see FIG. 10) between the first restricting portion 111 and the second restricting portion 112 is set to 19.0 mm or more and 34.0 mm or less as described above. .
When the separation distance L1 is set to 19.0 mm or more and 34.0 mm or less, one of the first regulation portion 111 and the second regulation portion 112 is positioned at one edge portion 960 (one edge on the eyebrow side or the cheek side). portion) and the other restricting portion is likely to be pressed against the other edge portion 960 .

Here, if the separation distance L1 between the first restricting portion 111 and the second restricting portion 112 is set to be smaller than 19.0 mm, one or both of the first restricting portion 111 and the second restricting portion 112 may be separated from the above-mentioned edge portion. It becomes easier to push the part inside than 960. In other words, it becomes easier to push the eyeball part. In this case, the eyeball is pressed.
Further, when the separation distance L1 between the first restricting portion 111 and the second restricting portion 112 is made larger than 34.0 mm, one or both of the first restricting portion 111 and the second restricting portion 112 are positioned away from the eyelid. However, it becomes easier to position, and the eyelid-opening function tends to decrease.

FIG. 13 is a view of the eyelid-opening device 1 viewed from the direction of arrow XIII in FIG.
In this embodiment, as shown in FIG. 13 , the tensile force receiving portion 530 provided on each of the first projecting portion 510 and the second projecting portion 520 is arranged at a location away from the restricting portion 110 .
Furthermore, in the present embodiment, the separation distance L7 between the tensile force receiving portion 530 and the contact portion 110A of the restricting portion 110 that contacts the subject's face is 8 mm or more.

A separation distance L7 between the tensile force receiving portion 530 and the contact portion 110A is preferably 8 mm or more. More preferably, it is 10 mm or more, and still more preferably 12 mm or more. Further, it is even better if the thickness is 16 mm or more.
Here, the separation distance L7 between the pulling force receiving portion 530 and the contact portion 110A is the distance L7 for receiving the pulling force when the eyelid-opening device 1 is not attached to the subject (when the eyelid-opening device 1 is in the natural state). It refers to the distance between the portion 530 and the contact portion 110A.

Further, the separation distance L7 between the tensile force receiving portion 530 and the contact portion 110A refers to the distance between the tensile force receiving portion 530 and the contact portion 110A on the straight line 13A in FIG.
More specifically, the separation distance L7 between the tensile force receiving portion 530 and the contact portion 110A is a straight line 13A that passes through the tensile force receiving portion 530 and is perpendicular to a plane 13C that passes through the contact portion 110A. , indicates the separation distance between the tensile force receiving portion 530 and the contact portion 110A.

FIG. 14 is a diagram showing changes in the eyelid-opening function and changes in the feeling of wearing the eyelid-opening device 1 when the separation distance L7 between the pulling force receiving portion 530 and the contact portion 110A is changed. In this embodiment, a plurality of types of eyelid-opening devices 1 having different separation distances L7 were prepared, and subjects were asked to wear each of them to investigate the eyelid-opening function and wearing comfort.
Here, FIG. 14 shows that the evaluation results are good in the order of A, B, C, and D. In addition, the closer to D, the better the evaluation result.

Here, the eyelid-opening function is a function of keeping the eyelids open. When the eyelid-opening function is high, the force with which the regulating portion 110 is pressed against the eyelids is strong, and the eyelids are easily maintained in an open state. On the other hand, if the performance as an eyelid-opening function is low, the force with which the regulating portion 110 is pressed against the eyelid becomes weak, making it easier for the eyelid to close.
Moreover, the wearing feeling is the feeling of the subject when the user wears the eyelid-opening device 1 . More specifically, the feeling of wearing means that the subject does not feel pain when the eyelid opening device 1 is attached to the subject, and the feeling of wearing is good means that the subject hardly feels pain. .

Here, in this embodiment, when the separation distance L7 was 8 mm or more, the eyelid-opening function was improved, and the eyelids were more difficult to close than when the separation distance L7 was less than 8 mm. This is because when the separation distance L7 is 8 mm or more, the second branch portion 372C of the nose-side pulling member 370 is less likely to come into contact with the subject's nose, and the force with which the regulation portion 110 is pressed against the eyelid is correspondingly reduced. It is to strengthen.
In addition, in the present embodiment, the eyelid-opening function is obtained even when the separation distance L7 is less than 8 mm, and a good feeling of wearing is obtained. Improved eyelid function.

Further, it was found that, in the present embodiment, the greater the separation distance L7, the better the eyelid-opening function and the better the feeling of wearing. More specifically, it was found that both the eyelid-opening function and the wearing comfort are improved each time the separation distance L7 is 10 mm or more, 12 mm or more, or 16 mm or more.
Here, in the present embodiment, when the separation distance L7 is increased, the eyelid contact member 100 is pressed against the eyelid more strongly, thereby improving the eyelid opening function. Further, when the separation distance L7 is increased, the pressing force of the nose-side pulling member 370 against the nose is decreased, thereby improving the wearing comfort of the subject.

As for the upper limit of the separation distance L7, it is preferable that the separation distance L7 is 24 mm or less.
As a result of conducting various experiments, it was found that interference between the eyelid-opening device 1 and the measuring device that measures the eyeballs is likely to occur when the separation distance L7 is larger than 24 mm. If the distance is 24 mm or less, this interference is less likely to occur.

Further, in this embodiment, as shown in FIG. 10 , the nose-side tensioning member 370 includes a temple-facing portion 371 that is arranged to face the subject's temple, and a tension member 370 that is closer to the subject's nose than the temple-facing portion 371 . There is also a nasal side 372 located at the .
In this embodiment, a gap (groove) 372A is formed in the nose side portion 372 along the longitudinal direction of the nose side portion 372 . In addition, at the nose side portion 372, the nose side pulling member 370 is branched to provide a first branch portion 372B and a second branch portion 372C. A gap 372A is provided between the first branched portion 372B and the second branched portion 372C.

As shown in FIG. 11, in the present embodiment, when the eyelid-opening device 1 is attached to the subject, the gap 372A is positioned opposite one eye of the subject (the eye not to be measured). In addition, in this embodiment, the first branch 372B passes above the one eye, and the second branch 372C passes below the one eye.
As a result, in the present embodiment, the line of sight of the eye that is not the object of measurement is prevented from being blocked by the nose-side pulling member 370 .

Further, as shown in FIG. 10, in the present embodiment, the temple-facing portion 371 is sheet-shaped (belt-shaped), and the temple-facing portion 371 is in surface contact with the subject's face (temple). As a result, the eyelid-opening device 1 is more stably fixed to the subject than when there is no surface contact.
In this embodiment, as shown in FIG. 10, the ear-side pulling member 380 is also sheet-shaped (band-shaped), and the eyelid-opening device 1 is applied to the subject on the ear-side pulling member 380 side as well. fixed more stably.

Furthermore, in the present embodiment, as shown in FIG. 10, a hooked portion 374 configured by a through hole is provided at the end of the nose-side pulling member 370 . A hook portion 375 that is formed in a hook shape and is hooked on the hooked portion 374 is provided at the end portion of the ear-side pulling member 380 .
In the present embodiment, the hooking portion 375 is hooked on the hooked portion 374 at the back of the subject's head, so that the nose-side pulling member 370 and the ear-side pulling member 380 are fixed to each other. 1 is fixed to the subject.

10 and 11, the projecting portion 500 is provided on the inner corner side of the eyelid contact member 100, but the projecting portion 500 is provided on the outer corner side of the eyelid contact member 100. may be provided, and the ear-side pulling member 380 may be fixed to the projecting portion 500 .
In addition, similar to the inner corner of the eye, the outer corner of the eye is provided with a pulling force receiving portion 530 that receives the pulling force from the ear-side pulling member 380, and the side closer to the subject's face than the pulling force receiving portion 530 is. A configuration in which the eyelid contact member 100 is arranged may be employed.

10 and 11, the case where the eyelid-opening device 1 is configured by an integral member has been described. 10 and 11, the eyelid contact member 100, the projecting portion 500, the nose-side pulling member 370, and the ear-side pulling member 380 are not separate parts, but are integrated. .
However, the eyelid contact member 100, the projecting portion 500, the nose-side pulling member 370, and the ear-side pulling member 380 are partially or entirely separate parts, and these parts are connected to form the eyelid-opening device 1. may be configured.

Also, the nose-side pulling member 370 and the ear-side pulling member 380 do not necessarily have to be sheet-like (belt-like), and are eyelid contacting members that fix the eyelid opening device 1 to the subject and restrict closing of the eyelids. Any shape or material may be used as long as it is a member that allows the 100 to function.

REFERENCE SIGNS LIST 1 eyelid-opening device 8A one side region 8B other side region 90N nose-side tensile force acting portion 110 regulation portion 111 first regulation portion 112 second regulation portion 113J eye corner side Part 113M... inner corner side part 200... support member 210... inner corner side protrusion part 220... outer corner side protrusion part 280... positioning part 300... rubber string 310... nose side rubber string 320... ear side rubber string , 400... Elastic member

Claims (6)

a regulating part that is placed in contact with the eyelid that covers the subject's eyeball and that regulates closing of the eyelid;
a protruding portion connected to a portion of the restricting portion arranged on the inner corner side and protruding in a direction away from the subject's face;
a corner-of-the-eye side portion connected to a portion arranged on the corner of the eye side of the restricting portion;
nose-side pulling means for pulling the protrusion toward the subject's nose;
an eye corner side pulling means for pulling the eye corner side portion toward the ear side located on the side opposite to the nose side across the eyeball;
with
The eye corner side portion protrudes in a direction away from the subject's face,
The eyelid-outside pulling means pulls the eyelid-outside portion protruding away from the subject's face to the ear side . A portion of the protruding portion that is pulled by the nose-side pulling means is positioned farther from the subject's face than a portion of the eye-outside portion that is pulled by the eye-outer-eye-side pulling means. The eyelid opening device according to claim 1. By pulling the protruding portion by the nose-side pulling means, a rotational moment acts on the restricting portion to rotate the restricting portion about a rotation axis extending in a direction from the lower eyelid covering the eyeball to the upper eyelid. The eyelid opening device according to claim 1. 2. The eyelid opening device according to claim 1, wherein the nose-side pulling means pulls the distal end portion of the projecting portion in the projecting direction toward the subject's nose. a regulating part that is placed in contact with the eyelid that covers the subject's eyeball and that regulates closing of the eyelid;
an inner-canthus-side portion connected to the inner-canthus-side portion of the restricting portion;
a corner-of-the-eye side portion connected to a portion arranged on the corner of the eye side of the restricting portion;
a nose-side pulling means connected to the inner-canthus-side portion and pulling the inner-canthus-side portion toward the nose of the subject;
an ear-side pulling means connected to the outer-eye-side portion and pulling the outer-eye-side portion to the ear side located opposite to the nose side across the eyeball;
with
A connection point between the inner corner side portion and the nose side pulling means is located farther from the subject's face than a connection point between the outer corner side portion and the ear side pulling means ,
The eye corner side portion protrudes in a direction away from the subject's face,
The ear-side pulling means is an eyelid-opening device that pulls the outer-eye-side portion protruding away from the subject's face to the ear side . 6. The eyelid-opening device according to claim 5 , wherein the inner corner side portion protrudes in a direction away from the subject's face.

Images