JP6967374B2 - Lens storage container - Google Patents

Description

The present invention relates to a lens storage container.

For example, in cataract surgery, vision is restored by a surgical procedure in which an intraocular lens, which is an artificial lens, is inserted into the eye instead of the crystalline lens that has become cloudy due to cataract. The intraocular lens to be implanted in the eye in cataract surgery is composed of an optical part (optic) that performs an optical lens function instead of the crystalline body, and a support part (haptic) that supports this optical part. Some intraocular lenses of this type are foldable by constructing at least the optics of a soft material so that the intraocular lens can be inserted into the eye through a smaller incision.

Generally, when an intraocular lens is inserted into the eye, an intraocular lens insertion device called an injector is used. An intraocular lens insertion device is used to fold an intraocular lens set in a predetermined position in the device into a small size and insert it into the eye. In cataract surgery using an intraocular lens insertion device, there are cases where the intraocular lens is folded in advance and then set in the intraocular lens insertion device, and cases where the intraocular lens is set in the intraocular lens insertion device without folding.

In the former case, for example, as described in Patent Document 1, the lens storage container for storing the intraocular lens is provided with a function of folding the intraocular lens, and the intraocular lens is folded in the lens storage container. The intraocular lens is set in the intraocular lens insertion device. In the latter case, for example, as described in Patent Document 2, the intraocular lens insertion device has a function of folding the intraocular lens, and when the intraocular lens is pushed out by the intraocular lens insertion device, the inside of the device is used. I try to fold the intraocular lens.

By the way, the applicant has proposed in Patent Document 3 an intraocular lens (hereinafter, also referred to as a "general-purpose intraocular lens") that can be used for various surgical procedures (hereinafter, also referred to as "general-purpose intraocular lens"). General-purpose intraocular lenses are capable of at least four surgical procedures, including "in-the-bag," "out-the-bag," "sewing fixation," and "intrascleral fixation." It is a lens. "In the bag" is a procedure in which an intraocular lens is housed inside the capsular bag that remains after the lens is removed. "Out the bag" is when the posterior capsule of the capsular bag (the inner part of the eyeball) is damaged, that is, the intraocular lens is fixed in the capsule by a support because the capsular bag is fragile. If this is not possible, this is a surgical procedure in which a support is fitted into the hair-like groove of the eyeball to install an intraocular lens. "Sewing fixation" is, for example, a surgical technique in which the support portion is sewn and fixed to a predetermined part of the eye with a suture when the capsular bag itself has already been removed or does not exist. "Intraocular fixation" is a technique in which the tip of the support portion of an intraocular lens is embedded inside the sclera.

Japanese Unexamined Patent Publication No. 2005-305183 JP-A-2017-55940 Japanese Unexamined Patent Publication No. 2016-174762

The general-purpose intraocular lens has a longer and thinner support portion on the tip side of the optical portion than, for example, an intraocular lens that can be used only for in-the-bag and out-the-bag procedures. It extends outward. The reason is that, for example, when the technique of intrascleral fixation is adopted, if the length of the support portion is short, the embedding dimension of the support portion with respect to the sclera is insufficient, and if the tip side of the support portion is thick, the inside of the sclera is used. This is because it becomes difficult to insert the support portion into the space.

The conventional lens storage container has a mechanism to fold the intraocular lens by pushing the optical part while the support part is extended, but it is more difficult to set the general-purpose intraocular lens in the intraocular lens insertion device. It was necessary to fold the intraocular lens compactly.

An object of the present invention is to provide a lens storage container capable of more compactly folding an intraocular lens having an optical portion and a support portion.

(First aspect)
The first aspect of the present invention is
A lens storage container capable of accommodating an intraocular lens including an optical portion having a lens function and at least one support portion extending from the optical portion.
A container body having a lens mounting portion on which the intraocular lens is mounted,
A folding mechanism for folding the intraocular lens installed in the lens installation portion, and
Equipped with
The folding mechanism is
A first movable member that is movably attached to the container body in the first direction and has a portion that presses the support portion from the first direction.
A second movable member that is movably attached to the container body in a second direction different from the first direction and has a portion that presses the optical portion from the second direction.
Including at least
It is a lens storage container characterized by this.
(Second aspect)
The second aspect of the present invention is
The folding mechanism is
When the first movable member is moved in the first direction and then the second movable member is moved in the second direction, the push applied from the second movable member to the optical unit. The lens storage container according to the first aspect, wherein the lens storage container includes a contact portion that raises the support portion while contacting the support portion by pressure.
(Third aspect)
A third aspect of the present invention is
The contact portion is formed from the second movable member when the first movable member is moved in the first direction and then the second movable member is moved in the second direction. The lens storage container according to the second aspect, wherein the lens storage container has a slope surface that comes into contact with the support portion due to a pressing force applied to the optical portion.
(Fourth aspect)
A fourth aspect of the present invention is
The container body has a second attached portion to which the second movable member is attached.
The first feature is that the slope surface is arranged so as to face the second direction, and the lower side of the slope surface is inclined so as to be closer to the second attached portion than the upper side. The lens storage container according to the third aspect.
(Fifth aspect)
A fifth aspect of the present invention is
The contact portion is provided on the first movable member.
The lens storage container according to the fourth aspect, wherein the inclination angle of the slope surface with respect to a reference axis parallel to the height direction of the first movable member is more than 0 degrees and 60 degrees or less. ..
(Sixth aspect)
A sixth aspect of the present invention is
The contact portion is any one of the second to fifth embodiments, wherein the support portion is raised by the slope surface so that the support portion is embraced inside the optical portion. The lens storage container described in one.
(7th aspect)
A seventh aspect of the present invention is
The first movable member is characterized in that the support portion is pressed from the first direction so that the tip end side of the support portion enters the lower side of the optical portion. The lens storage container according to any one of the six aspects.
(8th aspect)
The eighth aspect of the present invention is
The second movable member according to the first to seventh aspects, wherein the second movable member presses the optical portion from the second direction so that the optical portion is folded in an inverted U shape. The lens storage container according to any one.
(9th aspect)
A ninth aspect of the present invention is
The first to eighth movable members are provided with an erroneous operation prevention mechanism for preventing erroneous operations when at least one of the first movable member and the second movable member is moved on the container body. The lens storage container according to any one of the above embodiments.
(10th aspect)
A tenth aspect of the present invention is
The erroneous operation prevention mechanism is
A first erroneous operation prevention unit provided on the first movable member,
A second erroneous operation prevention unit provided on the second movable member,
Have,
When the second movable member is moved in the second direction and then the first movable member is moved in the first direction, the first erroneous operation prevention unit and the second erroneous operation prevention unit are prevented. The lens storage container according to the ninth aspect, wherein the first movable member is configured to be prevented from moving by contact with the portion.
(11th aspect)
The eleventh aspect of the present invention is
The second movable member is movable between the movement start position and the movement end position in the second direction.
The erroneous operation prevention mechanism is
It is configured to allow the movement of the first movable member in the first direction only when the second movable member is arranged at the movement start position in the second direction. The lens storage container according to the ninth or tenth aspect described above.
(12th aspect)
A twelfth aspect of the present invention is
The first movable member is movable between the movement start position and the movement end position in the first direction.
The erroneous operation prevention mechanism is
It is configured to allow the movement of the second movable member in the second direction only when the first movable member is arranged at the movement start position or the movement end position in the first direction. The lens storage container according to any one of the ninth to eleventh embodiments described above.
(13th aspect)
A thirteenth aspect of the present invention is
The lens storage container according to any one of the first to twelfth aspects, wherein the intraocular lens is provided on the lens mounting portion.

According to the present invention, it is possible to provide a lens storage container capable of more compactly folding an intraocular lens having an optical portion and a support portion.

(A) is a plan view showing a configuration example of an intraocular lens according to an embodiment of the present invention, and (b) is a side view thereof. It is a top view which shows the structural example of the lens storage container which concerns on embodiment of this invention. It is a bottom view which shows the structural example of the lens storage container which concerns on embodiment of this invention. It is a perspective view which looked at the lens storage container which concerns on embodiment of this invention from the upper side. It is a perspective view which looked at the lens storage container which concerns on embodiment of this invention from the lower side. It is an exploded perspective view of the lens storage container which concerns on embodiment of this invention. It is a perspective view (the 1) which looked at the container body from the upper side. It is a perspective view which looked at the container body from the lower side. It is a perspective view (2) which looked at the container body from the upper side. It is a perspective view (3) which looked at the container body from the upper side. It is a perspective view which looked at the lid member from the lower side. It is a perspective view which looked at the 1st movable member from the upper side. It is a perspective view which looked at the 1st movable member from the lower side. It is a figure which looked at the 1st movable member from the front direction. It is a perspective view which looked at the 2nd movable member from the upper side. It is a perspective view which looked at the 2nd movable member from the lower side. It is sectional drawing which shows the installation state of an intraocular lens. It is a perspective view which shows the state which the lid member was removed from a container body. It is a top view which shows the state which the lid member was removed from a container body. It is a top view which shows the state which the 1st movable member was moved in the X direction on a container body. It is a top view which shows the state of the intraocular lens when the support part is pushed by the 1st movable member. It is a perspective view which shows the state which the 2nd movable member was moved in the Y direction on the container body. (A) is a view of the final folded shape of the intraocular lens seen from one side in the Y direction, (b) is a view seen from the X direction, and (c) is a view seen from the other side in the Y direction. Is. It is a figure which shows the state which the intraocular lens which was folded using the lens storage container is picked up with tweezers.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the embodiment of the present invention, the description will be given in the following order.
1. 1. Intraocular lens configuration 2. Configuration of lens storage container 3. Lens storage container assembly procedure (manufacturing method)
4. How to use the lens storage container (operation procedure)
5. Principle of preventing erroneous operation 6. Effect of embodiment 7. Modification example etc.

<1. Intraocular lens configuration>
FIG. 1A is a plan view showing a configuration example of an intraocular lens according to an embodiment of the present invention, and FIG. 1B is a side view thereof.
The illustrated intraocular lens 1 is a general-purpose intraocular lens that can be used for the above four surgical procedures. The intraocular lens 1 includes an optical unit 2 having a lens function and a support unit 3 that supports the optical unit 2.

The optical unit 2 is formed in the shape of a convex lens having a circular shape in a plan view. The diameter of the optical unit 2 may be set to any size as long as it is suitable for inserting the intraocular lens 1 into the capsular bag in the eye. To describe a specific dimensional setting example, the diameter D of the optical unit 2 is preferably set in the range of 5 mm to 7 mm. The thickness of the optical unit 2 is set according to a desired refractive index or the like. The optical unit 2 is made of a soft material that allows the optical unit 2 to be folded. The term "foldable" described here is used to mean that the intraocular lens 1 including the optical unit 2 can be folded at least in half. Therefore, the soft material constituting the optical unit 2 is a material having flexibility enough to fold the optical unit 2. Specific examples thereof include soft materials such as silicone resin, acrylic resin, hydrogel, and urethane resin.

The support portion 3 is formed so as to extend outward from the outer peripheral edge of the optical portion 2. The support portion 3 serves to support the optical portion 2 in the eye when the intraocular lens 1 is inserted into the eye. Two support portions 3 are formed in one intraocular lens 1 so as to form a pair on the outer peripheral edge of the optical portion 2. Each support portion 3 has a portion where the virtual straight line S passing through the center C of the optical portion 2 intersects the outer peripheral edge of the optical portion 2 as the base end of the support portion 3, and is a substantially arc in the clockwise direction from this base end. It is stretched to draw. Therefore, the two support portions 3 are arranged at an interval of 180 degrees in the circumferential direction along the outer peripheral edge of the optical portion 2. Each support portion 3 has the following common structure.

The support portion 3 extends outward from the outer peripheral edge of the optical portion 2 in an arm shape. The support portion 3 includes a soft support portion 4 including the base end of the support portion 3 and a hard support portion 5 including the tip of the support portion 3. The base end of the soft support portion 4 is formed to be wide like a foot of a mountain, and the widest portion is connected to the optical portion 2. The soft support portion 4 extends from the outer peripheral edge of the optical portion 2, and the hard support portion 5 further extends from the tip (stretched end) of the soft support portion 4.

The outer surface of the support portion 3 draws a smoothly continuous arc from the soft support portion 4 to the hard support portion 5. A constricted portion 7 is formed on the inner surface of the support portion 3. The constricted portion 7 is formed in the hard support portion 5 in the length direction of the support portion 3. The constricted portion is a portion in which the width is wider on both sides of the constricted portion, and the width of the constricted portion is relatively narrow. The constricted portion 7 is not an essential element for a general-purpose intraocular lens, but if the constricted portion 7 is formed in the support portion 3, the constricted portion 7 is used when the suture fixing is adopted when the intraocular lens 1 is inserted. A suture can be wound around the 7. Therefore, the suture is less likely to come off from the support portion 3.

When a virtual arc line having a radius R is drawn from the center C of the optical unit 2, the soft support portion 4 and the hard support portion 5 are separated from each other with the virtual arc line as a boundary. That is, in the support portion 3, the portion inside the virtual arc line having the radius R is the soft support portion 4, and the portion outside the virtual arc line having the radius R is the hard support portion 5.

The soft support portion 4 has flexibility that can be elastically deformed in the radial direction of the optical portion 2. The soft support portion 4 is integrally molded with the optical portion 2 by the same soft material as the optical portion 2. The term "integrally molded" as used herein means that the optical portion 2 and the soft support portion 4 are integrally formed using the same material, and the optical portion 2 and the soft support portion 4 are integrally formed. And are not connected after being formed as a separate member.

The hard support portion 5 is made of a hard material that is harder than the optical portion 2 and the soft support portion 4. The hard material applied to the hard support portion 5 may be any material that can guarantee the strength to the extent that the suture is not torn even if the suture is tied to the hard support portion 5 even if the suture is tied to the hard support portion 5. Specifically, for example, a hard resin material such as PMMA (polymethylmethacrylate) can be used. The tip of the hard support portion 5 is slightly rounded so as not to damage the tissue of the eyeball even if it comes into contact with the tissue. Further, the soft support portion 4 and the hard support portion 5 constituting the support portion 3 are structurally integrated, only the constituent materials of the respective portions are different.

The hard support portion 5 is formed to be narrower than the soft support portion 4 except for the protrusions on both sides of the constricted portion 7. That is, assuming that the width of the soft support portion 4 is W1 (mm) and the width of the hard support portion 5 is W2 (mm), W1> W2. The width W2 of the hard support portion 5 is preferably 0.3 mm or less. By making the tip side of the support portion 3 narrow in this way, for example, when applying an intrascleral fixation technique to cataract surgery, the tip portion of the support portion 3 is inserted into the sclera. It will be easier. In addition, when applying the in-the-back or out-the-back technique, the support portion 3 can be easily and stably fitted to the vicinity of the equator of the capsular bag and the ciliary groove, and the suture fixing technique is applied. When the above is applied, it becomes easy to wind the suture around the hard support portion 5.

The configuration of the intraocular lens described above includes a part of the contents described in the above-mentioned Patent Document 3, but other contents described in the above-mentioned document may be applied to the present embodiment.

<2. Lens storage container configuration>
FIG. 2 is a top view showing a configuration example of the lens storage container according to the embodiment of the present invention, and FIG. 3 is a bottom view thereof. Further, FIG. 4 is a perspective view of the lens storage container according to the embodiment of the present invention as viewed from above, and FIG. 5 is a perspective view of the lens storage container as viewed from below. Further, FIG. 6 is an exploded perspective view of the lens storage container according to the embodiment of the present invention.

The lens storage container according to the embodiment of the present invention can store the intraocular lens and includes a folding mechanism for folding the stored intraocular lens into a predetermined shape. The "predetermined shape" described here refers to a folded shape of an intraocular lens that matches the surgical procedure when an intraocular lens is implanted into the eye in cataract surgery.

When handling the above-mentioned general-purpose intraocular lens 1, the above-mentioned "predetermined shape" includes at least a first folding shape and a second folding shape described below. In the first folding shape, the intraocular lens (mainly the optical portion 3) 1 is folded in half so as to embrace (wrap) the other support portion 3 inside the optical portion 2 while extending one support portion 3. It is a shape to make. In the following description, when the intraocular lens 1 is folded in the first folding shape, the support portion 3 to be embraced inside the optical portion 2 is designated by the reference numeral 3a, and the support portion 3 is kept stretched. Is designated by reference numeral 3b. The second folding shape is a shape in which the intraocular lens 1 is folded in half while both support portions 3 are stretched. The first folding shape is a shape that fits the in-the-bag or out-the-bag technique, and the second folding shape is a shape that fits the sewn fixation or intrascleral fixation technique. Is. In other words, by using the lens storage container of this embodiment, it is possible to fold the intraocular lens by selecting a fold shape that suits the surgical procedure of cataract surgery from the two fold shapes prepared in advance as options. Become. When folding the intraocular lens 1 using the lens storage container, it is necessary to operate the lens storage container according to a predetermined procedure. The operation procedure of the lens storage container differs depending on which folding shape is selected (adopted by an operator such as an ophthalmologist).

As shown in FIGS. 2 to 6, the lens storage container 11 includes a container main body 12, a lid member 13, a first movable member 14, and a second movable member 15. The lid member 13 is detachably attached to the container body 12. The first movable member 14 is movably attached to the container body 12 in the first direction. The second movable member 15 is movably attached to the container body 12 in a second direction different from the first direction. The folding mechanism described above includes at least a first movable member 14 and a second movable member 15. In the present embodiment, as a preferred example, the first direction and the second direction are 90 degrees (right angles) to each other. In the lens storage container 11, the main parts constituting the folding mechanism are the grip portion 32 formed in the container main body 12, the first pressing portion 63 and the contact portion 64 formed in the first movable member 14. The second pressing portion 83 formed on the second movable member 15.

The container body 12, the lid member 13, the first movable member 14, and the second movable member 15, which are the constituent elements of the lens storage container 11, can be configured by using, for example, resin, metal, ceramics, or the like. Considering the manufacturing cost of the lens storage container 11, it is preferably made of resin. Specifically, for example, resins such as fluororesin, polyamide resin, polyarylate, polyethylene, polyethylene terephthalate, polyvinyl chloride, polycarbonate, polysaliphon, polystyrene, polybutylene terephthalate, polypropylene, and polymethylpentene can be used. Further, it is preferable that the container body 12, the lid member 13, the first movable member 14, and the second movable member 15 are each made of an integrally molded resin product.

In the present embodiment, in order to clarify the relative positional relationship of each part of the lens storage container 11 and the direction of operation, each direction is defined as follows. First, the first direction is the X direction, the second direction is the Y direction, and the directions perpendicular to the X direction and the Y direction are the Z direction. Further, the direction parallel to the X direction and the Y direction is the horizontal direction, and the direction perpendicular to the horizontal direction is the vertical direction. The Z direction corresponds to the height direction of the lens storage container 11. Regarding the height direction of the lens storage container 11, the side to which the lid member 13 is attached is on the upper side, and the opposite side is on the lower side. Further, the definitions of the X direction, the Y direction, and the Z direction are similarly applied to the container body 12, the first movable member 14, and the second movable member 15 included in the constituent elements of the lens storage container 11. do. The intraocular lens 1 is stored in the lens storage container 11 in the horizontal posture shown in FIG. 1 (b). Further, the hard support portion 5 of each support portion 3 is arranged below the outer peripheral edge of the optical portion 2.

(Container body)
FIG. 7 is a perspective view of the container body as viewed from above, and FIG. 8 is a perspective view of the container body as viewed from below.
The container body 12 has a flat structure having a substantially rectangular shape in a plan view. The lateral direction of the container body 12 corresponds to the X direction, the longitudinal direction corresponds to the Y direction, and the height direction corresponds to the Z direction. The container body 12 has a stepped portion 20 in the middle in the longitudinal direction. The step portion 20 is formed in a direction parallel to the X direction, and both ends thereof are formed in a round shape (rounded shape). The container main body 12 is divided into a first portion 21 and a second portion 22 with a step portion 20 as a boundary. The first portion 21 is formed to be lower in height than the second portion 22. The upper surface 21a of the first portion 21 is formed on a flat surface without unevenness.

The second portion 22 is divided into substantially squares in a plan view. The second portion 22 includes a lens mounting portion 23 on which the intraocular lens 1 is mounted (set), a first mounted portion 24 on which the first movable member 14 is mounted, and a second movable member 15. A second attached portion 25 to be attached is provided. The lens mounting portion 23 is formed in the central portion of the second portion 22. The first attached portion 24 is formed on one side of the second portion 22 corresponding to the long side side of the container main body 12, and the second attached portion 25 corresponds to the short side side of the container main body 12. It is formed on the other side of the second portion 22.

A peripheral wall 16 is formed on the outer peripheral edge of the container body 12. The lower surface side of the container body 12 is recessed according to the height of the peripheral wall 16. A plurality of ribs 17 are formed on the lower surface side of the container body 12. These ribs 17 are formed in order to secure the mechanical strength (rigidity, etc.) required for the container body 12.

(Lens installation part)
The lens installation portion 23 is formed with a through hole 26 having a circular shape in a plan view. The through hole 26 is provided in the central portion of the second portion 22. A protrusion 27 is formed around the through hole 26. The protruding portion 27 projects upward from the upper surface 22a of the second portion 22 parallel to the upper surface 21a of the first portion 21. Further, the protruding portion 27 has an inclined surface 27a. The inclined surface 27a is inclined diagonally upward from the arc on the large diameter side toward the arc on the small diameter side when two large and small arcs having different radii from the central axis are drawn around the central axis of the through hole 26. ing. Further, the protruding portion 27 is separated into two large and small portions diagonally by the two fitting portions 28 and 29 formed in the second portion 22. One fitting portion 28 is formed along the X direction, and the other fitting portion 29 is formed along the Y direction. As a result, the two fitting portions 28 and 29 are formed in a substantially L-shape in a plan view. Further, a pair of fitting holes 30 are provided on the outside of the protruding portion 27. The pair of fitting holes 30 are holes formed for attaching the lid member 13 to the second portion 22 of the container body 12. The dimensions of each fitting hole 30 are relatively small on the downstream side in the clockwise direction about the central axis of the through hole 26 when the container body 12 is viewed in a plan view (when viewed from above). ..

The protruding portion 27 includes a support surface 31 that receives the optical portion 2 of the intraocular lens 1 from below and supports it horizontally, a grip portion 32 for gripping the optical portion 2 in the Y direction, and a support for the intraocular lens 1. A housing portion 33 for accommodating the tip portion of the portion 3b and a suppressing portion 34 for suppressing the positional deviation of the intraocular lens 1 are provided.

The support surface 31 is arranged closer to the through hole 26 than the grip portion 32. The support surface 31 is formed so as to form substantially the same plane as the protrusion 27 and the upper surface. The grip portion 32 is formed so as to project upward from the upper surface of the protruding portion 27. The grip portion 32 has an overhang surface 35 that rises diagonally from the support surface 31. The overhang surface 35 is arranged so as to be close to or in contact with the outer peripheral edge of the optical portion 2 of the intraocular lens 1 installed in the lens mounting portion 23.

The accommodating portion 33 is formed so as to project upward from the upper surface of the protruding portion 27. The accommodating portion 33 is formed in a substantially U-shape in a plan view so as to open one of them in the Y direction. The restraining portion 34 is formed so as to project upward from the upper surface of the protruding portion 27. The restraining portion 34 is formed in a circular pin shape in a plan view between the gripping portion 32 and the accommodating portion 33.

(First attached part)
The first attached portion 24 is formed on one side of the second portion 22 in the X direction. In addition to the fitting portion 28 described above, the first mounted portion 24 is provided with a notch portion 41, an elongated hole 42, and a abutting portion 43. The upper surface 24a of the first attached portion 24 is formed by being recessed below the upper surface 22a of the second portion 22. The fitting portion 28 is formed by two surfaces facing each other in the Y direction, and a guide groove 44 (FIG. 9) is formed on each of these two surfaces along the X direction. The guide groove 44 is a groove for guiding the movement of the first movable member 14.

The notch 41 is formed by cutting a part of the long side of the container body 12 in a substantially U shape in the X direction so that the first movable member 14 attached to the container body 12 can be moved by the operation of fingers. ing. The elongated hole 42 is formed along the X direction. The elongated hole 42 is a hole for restricting the movement range on one side in the X direction when the first movable member 14 attached to the container body 12 is moved in the X direction. The abutting portion 43 is a portion for restricting the moving range on the other side in the X direction when the first movable member 14 attached to the container body 12 is moved in the X direction. The abutted portion 43 is a portion for restricting the moving end of the first movable member 14 attached to the first attached portion 24. The movement end described here means a movement end when the first movable member 14 is moved forward in the X direction. The abutted portion 43 is formed by an upright surface that erects substantially vertically from the upper surface 24a of the first attached portion 24. The abutting portion 43 is formed at a position adjacent to the grip portion 32 in the X direction.

(Second attached part)
The second attached portion 25 is formed on one side of the second portion 22 in the Y direction. In addition to the fitting portion 29 described above, the second attached portion 25 is provided with a notch portion 46, an elongated hole 47, and a abutting portion 48 (FIG. 10). The upper surface 25a of the second attached portion 25 is formed by being recessed below the upper surface 22a of the second portion 22. The fitting portion 29 is formed by two surfaces facing each other in the X direction, and a guide groove 49 (FIG. 10) is formed on each of these two surfaces along the Y direction. The guide groove 49 is a groove for guiding the movement of the second movable member 15.

The notch 46 is formed by cutting a part of the short side of the container body 12 in a substantially U shape in the Y direction so that the second movable member 15 attached to the container body 12 can be moved by the operation of fingers. ing. The elongated hole 47 is formed along the Y direction. The elongated hole 47 is a hole for restricting the movement range on one side in the Y direction when the second movable member 15 attached to the container body 12 is moved in the Y direction. The abutting portion 48 is a portion for restricting the moving range on the other side in the Y direction when the second movable member 15 attached to the container body 12 is moved in the Y direction. The abutted portion 48 is a portion for restricting the moving end of the second movable member 15 attached to the second attached portion 25. The movement end described here means a movement end when the second movable member 15 is moved forward in the Y direction. The abutted portion 48 is formed by an upright surface that rises substantially vertically from the upper surface 25a of the second attached portion 25. The abutted portion 48 is formed at a position adjacent to the restraining portion 34 in the Y direction.

(Cover member)
Next, the configuration of the lid member 13 will be described with reference to FIGS. 6 and 11. FIG. 11 is a perspective view of the lid member as viewed from below.
The lid member 13 is attached so as to cover the second portion 22 of the container body 12 from above. The lid member 13 is formed in a substantially square shape in a plan view. The four corners of the lid member 13 are each formed in a round shape. A peripheral wall 50 is formed on the outer peripheral edge of the lid member 13. The central portion of the upper surface of the lid member 13 is dented in a circular shape in a plan view, and a through hole 51 and a pair of peep holes 52 are formed in the dented portion. The through hole 51 is formed in a circular shape in a plan view at the center of the lid member 13. The through hole 51 is arranged coaxially with the through hole 26 when the lid member 13 is attached to the container body 12. Therefore, the optical characteristics of the optical unit 2 can be confirmed from the outside while the lid member 13 is attached to the container body 12. The pair of peepholes 52 are in a state of a pair of support portions 3a and 3b from the outside of the lens storage container 11 even when the intraocular lens 1 is installed in the lens installation portion 23 of the container body 12 and the lid member 13 is attached. It is provided at a position corresponding to the arrangement of the pair of support portions 3a and 3b so that the position, orientation, etc.) can be visually confirmed. Further, the lid member 13 is provided with a pair of ventilation holes 53.

On the other hand, the lower surface of the lid member 13 is recessed due to the presence of the peripheral wall 50, and the annular portion 54, the lens holding portion 55, and the pair of engaging portions 56 are formed in the recessed portion. The annular portion 54 is formed so as to project downward from the lower surface of the lid member 13, and is formed concentrically with the above-mentioned through hole 51. The annular portion 54 is arranged near the outer peripheral edge of the protruding portion 27 of the container main body 12 when the lid member 13 is attached to the container main body 12. The lens holding portion 55 is composed of a plurality of (four in the figure) pins arranged around the through hole 51. The lens holding portion 55 is arranged close to the upper surface of the optical portion 2 of the intraocular lens 1 when the intraocular lens 1 is installed on the lens mounting portion 23 of the container body 12 and the lid member 13 is attached. This suppresses the movement (rattling) of the intraocular lens 1 in the Z direction. The pair of engaging portions 56 are formed in a substantially L-shape at two locations on the outer periphery of the annular portion 54, respectively. The pair of engaging portions 56 are fitted into the pair of fitting holes 30 described above when the lid member 13 is attached to the container body 12. Further, a pair of operation instruction marks 57 are formed on the upper surface of the lid member 13. The pair of operation instruction marks 57 indicate the direction in which the container body 12 is rotated when the lid member 13 is removed from the container body 12.

(First movable member)
FIG. 12 is a perspective view of the first movable member as viewed from above, and FIG. 13 is a perspective view of the first movable member as viewed from below.
The first movable member 14 is a member for pressing the support portion 3a in the X direction, if necessary, when the intraocular lens 1 installed in the lens mounting portion 23 is folded. In the following description, the movement of the first movable member 14 in the X direction is distinguished into forward movement and backward movement according to the difference in the movement direction. Forward movement means moving the first movable member 14 in a direction relatively close to the center position of the second portion 22 (center position of the through hole 26), and backward movement means the first movable movement. It means moving the member 14 in a direction relatively away from the center position of the second portion 22. Further, the moving direction when moving the first movable member 14 forward is the forward direction, the moving direction when moving the first movable member 14 backward is the backward direction, and the first movable member 14 is moved most forward. The time position is referred to as the movement end position of the first movable member 14, and the position when the first movable member 14 is most retracted is referred to as the movement start position (or initial position).

The first movable member 14 is formed in a substantially T-shape in a plan view. The first movable member 14 includes a first operation unit 61 operated by the operator's fingers, a first slider unit 62 extending from the first operation unit 61 by a predetermined width, and a support portion of the intraocular lens 1. The first pressing portion 63 for pressing the 3a, the contact portion 64 for deforming the support portion 3a so that the support portion 3a is embraced inside the optical portion 2 of the intraocular lens 1, and the container body 12 It has a movement restricting unit 65 that regulates the movement of the first movable member 14 with the lid member 13 attached, and a first erroneous operation preventing unit 66 for preventing erroneous operation. The first erroneous operation prevention unit 66 constitutes an erroneous operation prevention mechanism together with the second erroneous operation prevention unit 86 described later. The erroneous operation prevention mechanism prevents erroneous operation when at least one of the first movable member 14 and the second movable member 15 is moved on the container main body 12.

The first operation unit 61 is formed in a lever shape so as to project from both sides of the first slider unit 62. A hooking portion 67 is formed on the lower surface side of the first operating portion 61. The hook portion 67 is a portion for hooking the fingertip (or nail) of the surgeon when the surgeon operates the first movable member 14.

The first slider portion 62 is a portion that is movably fitted to the fitting portion 28 of the container body 12 when the first movable member 14 is attached to the first attached portion 24. A protrusion 62a for a stopper is formed on the lower surface of the first slider portion 62. The protrusion 62a is a portion that is fitted into the elongated hole 42 when the first movable member 14 is attached to the first attached portion 24 of the container body 12. Guide ribs 68 are formed on both side surfaces of the first slider portion 62. The guide rib 68 is a portion that is fitted into the guide groove 44 when the first movable member 14 is attached to the first attached portion 24.

When the surgeon operates the first operation unit 61 to move the first movable member 14 forward, the first pressing portion 63 comes into contact with the support portion 3a of the intraocular lens 1 and directly uses the support portion 3a. This is the part to be pressed. The first pressing portion 63 has a pressing surface 69. In the first pressing portion 63, the portion that actually contacts the support portion 3a is the pressing surface 69.

The contact portion 64 is a push applied to the optical portion 2 from the second movable member 15 when the first movable member 14 is moved in the X direction and then the second movable member 15 is moved in the Y direction. It is a portion that raises the support portion 3a while contacting the support portion 3a by pressure. The contact portion 64 is provided at a position adjacent to the first pressing portion 63. The upper end side of the contact portion 64 projects upward from the first pressing portion 63. The contact portion 64 comes into contact with the support portion 3a together with the first pressing portion 63 when the first movable member 14 is moved in the X direction as described above. However, the position where the contact portion 64 comes into contact with the support portion 3a is closer to the tip end side of the support portion 3a than the first pressing portion 63 (specifically, the intermediate portion in the length direction of the support portion 3a or more. Is a little closer to the tip of the support portion 3a). The contact portion 64 has a slope surface 70. When the first movable member 14 is moved in the X direction and then the second movable member 15 is moved in the Y direction as described above, the slope surface 70 is transferred from the second movable member 15 to the optical unit 2. It is a surface that comes into contact with the support portion 3a due to the applied pressing force. The slope surface 70 is formed of a flat surface and is arranged so as to face one side in the width direction of the first slider portion 62. In a state where the first movable member 14 is attached to the first attached portion 24, the slope surface 70 of the abutting portion 64 is arranged so as to face one side in the Y direction (the second attached portion 25 side).

The slope surface 70 is inclined so that the lower side of the slope surface 70 is closer to the second attached portion 25 than the upper side. Therefore, in the state where the second movable member 15 is attached to the second attached portion 25, the lower side of the slope surface 70 is arranged closer to the second movable member 15 than the upper side in the Y direction. Further, as shown in FIG. 14, assuming that the axis parallel to the height direction of the first movable member 14 is the reference axis K, the inclination angle θ (FIG. 14) of the slope surface 70 with respect to the reference axis K is preferable. It is more than 0 degrees and 60 degrees or less, more preferably 5 degrees or more and 45 degrees or less, and further preferably 8 degrees or more and 30 degrees or less. When the first movable member 14 is attached to the container body 12, the reference axis K becomes an axis parallel to the Z direction.

The movement restricting portion 65 is formed in a protruding shape on the upper surface of the first slider portion 62. When the lid member 13 is attached to the container body 12, the movement restricting portion 65 is arranged so as to face and be close to the outer peripheral surface of the annular portion 54. Therefore, if the first movable member 14 is to be moved forward from the initial position with the lid member 13 attached to the container body 12, the movement restricting portion 65 comes into contact with the annular portion 54, whereby the first movable member 14 is movable. The forward movement of the member 14 is restricted (prevented).

The first erroneous operation prevention unit 66 is arranged on the opposite side of the first operation unit 61 in the direction (X direction) orthogonal to the width direction of the first slider unit 62. A part of the first erroneous operation prevention portion 66 is formed at a position facing the first pressing portion 63 through a predetermined gap G. The first erroneous operation prevention unit 66 is formed in a substantially inverted L shape when viewed from the Y direction.

Further, the first movable member 14 is formed with a mounting portion 71 and an abutting portion 72. The mounting portion 71 is a portion on which the support portion 3a is mounted when the intraocular lens 1 is mounted on the lens mounting portion 23. When the first movable member 14 is moved forward in the X direction from the initial position, the abutting portion 72 abuts on the abutting portion 43 of the first attached portion 24, whereby the first movable member 14 This is the part that regulates the end of movement.

(Second movable member)
FIG. 15 is a perspective view of the second movable member as viewed from above, and FIG. 16 is a perspective view of the second movable member as viewed from below.
The second movable member 15 is a member for pressing the optical unit 2 in the Y direction when the intraocular lens 1 installed in the lens installation unit 23 is folded. In the following description, the movement of the second movable member 15 in the Y direction is distinguished into forward movement and backward movement according to the difference in the movement direction. Forward movement means moving the second movable member 15 in a direction relatively close to the center position of the second portion 22 (center position of the through hole 26), and backward movement means the second movable movement. It means moving the member 15 in a direction relatively away from the center position of the second portion 22. Further, the moving direction when moving the second movable member 15 forward is the forward direction, the moving direction when moving the second movable member 15 backward is the backward direction, and the second movable member 15 is moved most forward. The time position is called the movement end position, and the position when the first movable member 14 is moved backward most is called the movement start position (or initial position).

The second movable member 15 is formed in a substantially T-shape in a plan view. The second movable member 15 includes a second operation unit 81 operated by the operator's finger, a second slider unit 82 extending from the second operation unit 81 by a predetermined width, and an optical unit of the intraocular lens 1. A second pressing portion 83 for pressing 2 and a movement restricting portion 85 for restricting the movement of the second movable member 15 with the lid member 13 attached to the container body 12, and a second for preventing erroneous operation. 2 It has an erroneous operation prevention unit 86.

The second operation unit 81 is formed in a lever shape so as to project from both sides of the second slider unit 82. A hook portion 87 is formed on the lower surface side of the second operation portion 81. The hook portion 87 is a portion for hooking the fingertip (or nail) of the surgeon when the surgeon operates the second movable member 15.

The second slider portion 82 is a portion that is movably fitted to the fitting portion 29 of the container body 12 when the second movable member 15 is attached to the second attached portion 25. A protrusion 82a for a stopper is formed on the lower surface of the second slider portion 82. The protrusion 82a is a portion that is fitted into the elongated hole 47 when the second movable member 15 is attached to the second attached portion 25 of the container body 12. Guide ribs 88 are formed on both side surfaces of the second slider portion 82. The guide rib 88 is a portion that is fitted into the guide groove 49 when the second movable member 15 is attached to the second attached portion 25.

When the surgeon operates the second operation unit 81 to move the second movable member 15 forward, the second pressing unit 83 comes into contact with the outer peripheral edge of the optical unit 2 of the intraocular lens 1 and is optically optical as it is. This is the portion that presses the portion 2. The second pressing portion 83 has an overhang surface 90 that rises diagonally from the support surface 89. The support surface 89 is a surface for receiving and supporting the optical portion 2 of the intraocular lens 1 from below, similarly to the support surface 31 formed on the container body 12 side. The support surface 89 is formed at one end of the second movable member 15. As shown in FIG. 17, the overhang surface 90 is arranged so as to face the overhang surface 35 formed on the container body 12 side in the Y direction, and is intraocular between these two overhang surfaces 35 and 90. The optical unit 2 of the lens 1 is arranged. The overhang surfaces 35 and 90 are arranged so as to be close to or in contact with the outer peripheral edge of the optical portion 2 of the intraocular lens 1 installed in the lens mounting portion 23. When the intraocular lens 1 is folded on the container body 12 of the lens storage container 11, the outer peripheral edge of the optical unit 2 comes into contact with the overhang surfaces 35 and 90, so that the optical unit 2 becomes the grip portion 32 and the second. While being gripped with the pressing portion 83, the inclination of the overhang surfaces 35 and 90 prevents the outer peripheral edge of the optical portion 2 from being excessively lifted from the support surfaces 31 and 89.

The movement restricting portion 85 is formed in a protruding shape on the upper surface of the second slider portion 82. When the lid member 13 is attached to the container body 12, the movement restricting portion 85 is arranged so as to face and be close to the outer peripheral surface of the annular portion 54. Therefore, if the second movable member 15 is to be moved forward from the initial position with the lid member 13 attached to the container body 12, the movement restricting portion 85 comes into contact with the annular portion 54, whereby the second movable member 15 is movable. The forward movement of the member 15 is restricted (prevented).

The second erroneous operation prevention unit 86 is arranged on the opposite side of the second operation unit 81 in the direction (Y direction) orthogonal to the width direction of the second slider unit 82. The second erroneous operation prevention unit 86 prevents erroneous operation of the lens storage container 11 by cooperating with the first erroneous operation prevention unit 66 formed on the first movable member 14 side. The erroneous operation prevention mechanism composed of the erroneous operation prevention units 66 and 86 allows the movement of the first movable member 14 in the X direction only when the second movable member 15 is arranged at the movement start position in the Y direction. It is configured as follows. Further, the erroneous operation prevention mechanism is configured to allow the movement of the second movable member 15 in the Y direction only when the first movable member 14 is arranged at the movement start position or the movement end position in the X direction. ing. The principle of erroneous operation prevention by the erroneous operation prevention mechanism will be described later.

<3. Lens storage container assembly procedure (manufacturing method)>
Next, the procedure for assembling the lens storage container according to the embodiment of the present invention will be described.
First, after preparing the container main body 12, the lid member 13, the first movable member 14, and the second movable member 15, which are the constituent parts of the lens storage container 11, the first attached portion 24 of the container main body 12 is first. The movable member 14 of the above is attached, and the second movable member 15 is attached to the second attached portion 25. Either the first movable member 14 or the second movable member 15 may be attached first.

However, both the first movable member 14 and the second movable member 15 are arranged at the initial positions. The initial position of the first movable member 14 is such that the protrusion 62a on the lower surface of the first slider portion 62 is abutted against one end of the elongated hole 42 of the first attached portion 24 by the backward movement of the first movable member 14. Is uniquely determined by. The initial position of the second movable member 15 is such that the protrusion 82a on the lower surface of the second slider portion 82 is abutted against one end of the elongated hole 47 of the second attached portion 25 by the backward movement of the second movable member 15. Is uniquely determined by.

Next, the intraocular lens 1 is installed in the lens installation portion 23 of the container body 12. At that time, the optical unit 2 is placed on the support surfaces 31 and 89 while aligning the intraocular lens 1 so that the center of the optical unit 2 of the intraocular lens 1 coincides with the center of the through hole 26. Further, one support portion 3a of the intraocular lens 1 is mounted on the mounting portion 71 of the first movable member 14, and the other support portion 3b accommodates the tip portion thereof in the accommodating portion 33. Here, the support portion 3a mounted on the mounting portion 71 is provided in the lens extrusion direction of the intraocular lens insertion device when the intraocular lens 1 folded by using the lens storage container 11 is set in the intraocular lens insertion device. The support portion 3b, which is arranged relatively rearward and is accommodated in the accommodating portion 33, is arranged relative to the front.

Next, the lid member 13 is attached to the container body 12. When attaching the lid member 13, a pair of engaging portions 56 of the lid member 13 are inserted into the pair of fitting holes 30 of the container body 12, and the lid member 13 is turned clockwise in that state to form a pair. A pair of engaging portions 56 are fitted (locked) to the fitting hole 30. At this time, if necessary, the state of the pair of support portions 3a and 3b is confirmed through the peephole 52. If any abnormality is found in any of the support portions 3a (or 3b), the lid member 13 is removed from the container body 12, replaced with a new intraocular lens 1 if necessary, and then the assembly work is repeated. ..

With the above, the lens storage container 11 in which the intraocular lens 1 is stored (built-in) is obtained. Inside the lens storage container 11, the position of the optical portion 2 in the horizontal direction is regulated by the overhang surface 35 of the grip portion 32 and the overhang surface 90 of the second pressing portion 83. Further, in the horizontal direction, the position of the support portion 3a is regulated by the contact portion 64, and the position of the support portion 3b is regulated by the accommodating portion 33. Further, in the Z direction, the position of the optical unit 2 is regulated by the support surfaces 31 and 89 and the lens holding unit 55. Therefore, for example, even when the lens storage container 11 containing the intraocular lens 1 is transported, the intraocular lens 1 can be held in an appropriate position and state.

Further, in a state where the lid member 13 is attached to the container body 12, the movement restricting portion 65 provided on the first movable member 14 and the movement restricting portion 85 provided on the second movable member 15 are both provided. It is arranged so as to face and be close to the outer peripheral surface of the annular portion 54 provided on the lid member 13. Therefore, neither the first movable member 14 nor the second movable member 15 can be moved forward from the initial position. That is, in the state where the lid member 13 is attached to the container body 12, the first movable member 14 and the second movable member 15 can be operated by the physical contact between the movement restricting portions 65 and 85 and the annular portion 54. Both are banned.

<4. How to use the lens storage container (operation procedure)>
Next, a method of using the lens storage container according to the embodiment of the present invention will be described.
There are two operation methods that can be adopted when using the lens storage container 11. The first operation method is adopted when the intraocular lens 1 is folded so as to embrace the support portion 3a inside the optical portion 2. When the first operation method is adopted, the first movable member 14 is moved forward, and then the second movable member 15 is moved forward. The second operation method is adopted when the intraocular lens 1 is folded while the two support portions 3a and 3b are both stretched. When the second operation method is adopted, the second movable member 15 is moved forward without moving the first movable member 14 forward. Hereinafter, the procedure of the operation performed by the surgeon when the first operation method is adopted will be described as an example.

First, the lid member 13 is removed from the container body 12. When removing the lid member 13, as shown in FIG. 18, the lid member 13 is turned counterclockwise as indicated by the arrow of the operation instruction mark 57, and then the lid member 13 is lifted upward so as to be separated from the container body 12. .. When the lid member 13 is turned counterclockwise, the locked state between the pair of fitting holes 30 and the pair of engaging portions 56 is released. Further, when the lid member 13 is lifted upward, the regulation by the annular portion 54 of the lid member 13 is released, and the first movable member 14 and the second movable member 15 can be operated. Further, when the lid member 13 is removed, as shown in FIG. 19, the intraocular lens 1 installed in the lens mounting portion 23 of the container body 12 is exposed to the outside. The procedure up to this point is common regardless of the difference in operation method.

Next, as shown in FIG. 20, the first movable member 14 is moved forward from the initial position to the moving end position. In FIG. 20, the notation of the intraocular lens 1 is omitted. When the first movable member 14 is moved forward, the support portion 3a of the intraocular lens 1 is pushed in one direction in the X direction by the first pressing portion 63 of the first movable member 14. At this time, the positional deviation of the intraocular lens 1 in the horizontal direction is suppressed by the outer peripheral edge of the optical unit 2 coming into contact with the suppressing unit 34. Further, the support portion 3a pushed in by the forward movement of the first movable member 14 is bent so as to bend the portion of the soft support portion 4. Then, when the first movable member 14 is moved forward to the moving end position, the tip end side of the support portion 3a enters the lower side of the optical portion 2 as shown in the plan view of FIG. 21. The movement end position of the first movable member 14 is such that the abutting portion 72 of the first movable member 14 is thrust against the abutting portion 43 of the first attached portion 24 by the forward movement of the first movable member 14. It is uniquely determined by hitting.

Next, as shown in FIG. 22, the second movable member 15 is moved forward from the initial position to the moving end position. When the second movable member 15 is moved forward, the optical portion 2 is pushed in one direction in the Y direction by the overhang surface 90 (FIG. 15) of the second pressing portion 83. However, in the Y direction, since the optical portion 2 is gripped between the overhang surface 35 of the grip portion 32 and the overhang surface 90 of the second pressing portion 83, the second movable member 15 moves forward. When the optical unit 2 is pushed in, the optical unit 2 is gradually folded in half according to the amount of pushing. The folded shape of the optical unit 2 at this time is an inverted U shape when viewed from the X direction. Further, the movement end position of the second movable member 15 is such that the abutting portion 72 of the second movable member 15 is abutted portion 48 of the second attached portion 25 by the forward movement of the second movable member 15. It is uniquely determined by hitting against.

When the second movable member 15 is moved forward as described above, the support portion 3a comes into contact with the contact portion 64 of the first movable member 14. At this time, the support portion 3a is pressed against the slope surface 70 of the contact portion 64 by the pressing force applied to the optical portion 2 from the second pressing portion 83. Then, the support portion 3a gradually rises while being in contact with the slope surface 70. As a result, the support portion 3a stands up along the slope surface 70. As a result, the support portion 3a is embraced inside the optical portion 2 which is folded in half as described above. On the other hand, the support portion 3b remains stretched as before the first movable member 14 and the second movable member 15 are moved forward. However, the orientation of the support portion 3b changes with the deformation of the optical portion 2 due to the forward movement of the second movable member 15. Specifically, due to the deformation of the optical unit 2, the support portion 3b rises so that the tip end side faces upward.

FIG. 23A is a view of the final folded shape of the intraocular lens 1 from one side in the Y direction, FIG. 23B is a view seen from the X direction, and FIG. 23C is a view from the other side in the Y direction. It is a figure that I saw. When the intraocular lens 1 is folded as shown in the figure, the tip end side of the support portion 3a faces diagonally downward, and the tip end side of the support portion 3b faces diagonally upward.

After that, the surgeon picks the optical unit 2 with tweezers 91 as shown in FIG. 24. At this time, the support portion 3a held inside the optical portion 2 by the above operation is sandwiched between the optical portions 2 folded in half and is pinched by the tweezers 91 together with the optical portion 2. Next, the surgeon takes out the intraocular lens 1 picked by the tweezers 91 from the container body 12 and then sets it in an intraocular lens insertion device (not shown). At that time, the support portion 3a embraced inside the optical portion 2 is arranged closer to the rear in the central axis direction of the intraocular lens insertion device than the support portion 3b as it is stretched. Next, the surgeon pushes the intraocular lens 1 toward the eye by operating the lens insertion device according to a predetermined procedure. As a result, the intraocular lens 1 is further folded into a smaller size in the lens insertion device and inserted into the eye.

When the intraocular lens 1 is folded with the pair of support portions 3a and 3b stretched, the first movable member 14 is not moved forward from the initial position, and only the second movable member 15 is in the initial position. Move forward from. As a result, the optical portion 2 can be folded in half while the pair of support portions 3a and 3b are stretched. Therefore, for example, when a sewing fixing technique is adopted, it is possible to tie sutures to the respective support portions 3a and 3b on the container body 12.

<5. Principle of erroneous operation prevention>
Subsequently, an example of an erroneous operation assumed when operating the lens storage container 11 and a principle of preventing the erroneous operation will be described.

(Example of erroneous operation)
At least the following three examples of erroneous operations that are assumed when operating the lens storage container 11 can be considered. The first example is a case where the second movable member 15 is to be moved forward in a state where the first movable member 14 is moved forward halfway. The second example is a case where the first movable member 14 is to be moved forward in a state where the second movable member 15 is moved forward halfway. The third example is a case where the second movable member 15 is moved forward and then the first movable member 14 is to be moved forward.

(Principle of erroneous operation prevention)
In the state where the first movable member 14 is arranged at the movement start position, the first erroneous operation prevention portion 66 of the first movable member 14 is arranged at a position evacuated from the movement path of the second movable member 15. In this state, since the erroneous operation prevention portions 66 and 86 do not interfere with each other, the second movable member 15 is allowed to move forward and backward. Further, in a state where the first movable member 14 is arranged at the moving end position, the first erroneous operation prevention portion 66 of the first movable member 14 is arranged so as to advance on the moving path of the second movable member 15. In this state, the forward movement and the backward movement of the second movable member 15 are allowed by the fitting of the erroneous operation prevention portions 66 and 86 to each other.

On the other hand, in a state where the first movable member 14 is moved forward halfway, the first erroneous operation prevention unit 66 of the first movable member 14 advances into the movement path of the second movable member 15 and is arranged. Will be done. If the second movable member 15 is to be moved forward in this state, the erroneous operation prevention portions 66 and 86 come into contact (collision) with each other, so that the forward movement of the second movable member 15 is restricted (prevented). Therefore, it is possible to prevent the erroneous operation of the first example. The state in which the first movable member 14 is moved forward halfway means that the first movable member 14 is placed in a position where the first movable member 14 is advanced from the movement start position and retracted from the movement end position. say.

On the other hand, in the state where the second movable member 15 is arranged at the movement start position, the second erroneous operation prevention unit 86 of the second movable member 15 is arranged at a position evacuated from the movement path of the first movable member 14. In this state, since the erroneous operation prevention portions 66 and 86 do not interfere with each other, the forward movement and the backward movement of the first movable member 14 are allowed.

On the other hand, in a state where the second movable member 15 is moved forward halfway, or when the second movable member 15 is arranged at the movement end position, the second erroneous operation prevention unit of the second movable member 15 The 86 is arranged so as to advance on the movement path of the first movable member 14. If the first movable member 14 is to be moved forward in this state, the erroneous operation prevention portions 66 and 86 come into contact with each other, so that the forward movement of the first movable member 14 is restricted. Therefore, the forward movement of the first movable member 14 at the movement start position is permitted only when the second movable member 15 is at the movement start position. Therefore, it is possible to prevent the erroneous operation of the second example and the erroneous operation of the third example. The state in which the second movable member 15 is moved forward halfway means that the second movable member 15 is placed in a position where the second movable member 15 is advanced from the movement start position and retracted from the movement end position. say.

<6. Effect of embodiment>
According to the embodiment of the present invention, one or more of the following effects can be obtained.

(A) In the embodiment of the present invention, the first movable portion has a first pressing portion 63 that presses the support portion 3a from the X direction with respect to the intraocular lens 1 installed in the lens mounting portion 23 of the container body 12. A folding mechanism including a member 14 and a second movable member 15 having a second pressing portion 83 that presses the optical portion 2 from the Y direction is adopted. As a result, the support portion 3a can be pushed in the X direction by the first movable member 14, and then the optical portion 2 can be pushed in the Y direction by the second movable member 15. Therefore, the intraocular lens 1 can be folded more compactly as compared with the case where only the optical unit 2 is pushed in. As a result, even when handling the general-purpose intraocular lens, for example, it can be compactly folded and taken out.

(B) In the embodiment of the present invention, when the first movable member 14 is moved in the X direction and then the second movable member 15 is moved in the Y direction, the optical unit is moved from the second movable member 15. A configuration is adopted in which a contact portion 64 for raising the support portion 3a while contacting the support portion 3a by the pressing force applied to the support portion 3a is provided. As a result, the intraocular lens 1 can be folded so as to embrace the support portion 3a inside the optical portion 2.

(C) In the embodiment of the present invention, when the first movable member 14 is moved in the X direction and then the second movable member 15 is moved in the Y direction, the optical unit is moved from the second movable member 15. A configuration is adopted in which the support portion 3a comes into contact with the slope surface 70 of the contact portion 64 due to the pressing force applied to 2, and the support portion 3a stands up along the slope surface 70. As a result, the support portion 3a can be more reliably embraced inside the optical portion 2.

(D) In the embodiment of the present invention, an erroneous operation prevention mechanism for preventing an erroneous operation when moving at least one of the first movable member 14 and the second movable member 15 on the container body 12 is provided. The configuration is adopted. This makes it possible to prevent an erroneous operation when moving the first movable member 14 or the second movable member 15 on the container main body 12.

(E) In the embodiment of the present invention, the first movable member 14 is provided with the first erroneous operation prevention unit 66, the second movable member 15 is provided with the second erroneous operation prevention unit 86, and the second movable member 15 is provided. When the first movable member 14 is to be moved in the X direction after moving in the Y direction, the first movable member 14 due to contact between the first erroneous operation prevention unit 66 and the second erroneous operation prevention unit 86. It is configured to prevent the movement of. As a result, the first movable member 14 and the second movable member 15 can be operated by a predetermined correct procedure.

<7. Modification example>
The technical scope of the present invention is not limited to the above-described embodiment, and includes various modifications and improvements as long as the specific effects obtained by the constituent requirements of the invention and the combination thereof can be derived.

For example, in the above embodiment, when the contact portion 64 is provided on the first movable member 14, the slope surface 70 of the contact portion 64 is formed as a flat surface, but the present invention is not limited to this, and for example, the above. When the first movable member 14 is viewed in the direction shown in FIG. 14, the slope surface of the contact portion is a surface inclined in a stepped manner or a surface curved in an arc shape from the lower side to the upper side. You may. That is, the slope surface may have any shape as long as the support portion 3a that comes into contact with the slope surface of the contact portion can be raised.

Further, in the above embodiment, the angle formed by the moving direction (X direction) of the first movable member 14 and the moving direction (Y direction) of the second movable member 15 is 90 degrees, but the angle is 90 degrees. It does not matter whether it is larger or smaller than the degree.

Further, in the above embodiment, the first movable member 14 is movably attached to the second portion 22 of the container body 12 by forming the first attached portion 24 on one side in the X direction. However, the present invention is not limited to this, and two first movable members are formed by forming first attached portions 24 on both sides in the X direction with respect to the second portion 22 of the container body 12. 14 may be movably attached. In that case, the intraocular lens 1 can be folded so as to embrace the two support portions 3a and 3b of the intraocular lens 1 inside the optical portion 2, respectively.

Further, in the above embodiment, the lens storage container for storing the general-purpose intraocular lens has been described as an example, but the present invention is applied to a lens storage container for storing an intraocular lens other than the general-purpose intraocular lens. You may.

1 ... Intraocular lens 2 ... Optical part 3 ... Support part 11 ... Lens storage container 12 ... Container body 13 ... Cover member 14 ... First movable member 15 ... Second movable member 24 ... First attached part 25 ... Second attached portion 64 ... Contact portion 70 ... Slope surface 66 ... First erroneous operation prevention portion 86 ... Second erroneous operation prevention portion

Claims (15)

A lens storage container capable of accommodating an intraocular lens including an optical portion having a lens function and at least one support portion extending from the optical portion.
A container body having a lens mounting portion on which the intraocular lens is mounted,
A folding mechanism for folding the intraocular lens installed in the lens installation portion, and
Equipped with
The folding mechanism is
A first movable member that is movably attached to the container body in the first direction and has a portion that presses the support portion from the first direction.
A second movable member that is movably attached to the container body in a second direction different from the first direction and has a portion that presses the optical portion from the second direction.
At least look at including the,
The lens storage container further
The abutting portion that regulates the movement end of the first movable member, and
The abutting portion that regulates the movement end of the second movable member, and
Equipped with
The intraocular lens is still housed in the lens storage container even when the first movable member is moved to the terminal position and the second movable member is moved to the terminal position. Lens storage container. The folding mechanism is
When the first movable member is moved in the first direction and then the second movable member is moved in the second direction, the push applied to the optical portion from the second movable member. The lens storage container according to claim 1, further comprising a contact portion that raises the support portion while contacting the support portion by pressure. The contact portion is formed from the second movable member when the first movable member is moved in the first direction and then the second movable member is moved in the second direction. The lens storage container according to claim 2, further comprising a slope surface that comes into contact with the support portion due to a pressing force applied to the optical portion. The container body has a second attached portion to which the second movable member is attached.
The claim is characterized in that the slope surface is arranged so as to face the second direction, and the lower side of the slope surface is inclined so as to be closer to the second attached portion than the upper side. The lens storage container according to 3. The contact portion is provided on the first movable member.
The lens storage container according to claim 4, wherein the inclination angle of the slope surface with respect to a reference axis parallel to the height direction of the first movable member is more than 0 degrees and 60 degrees or less. The contact portion according to any one of claims 3 to 5, wherein the support portion is raised by the slope surface so that the support portion is embraced inside the optical portion. The listed lens storage container. The folding mechanism is
When the first movable member is moved in the first direction and then the second movable member is moved in the second direction, a push applied to the optical portion from the second movable member. Including a contact portion that raises the support portion while contacting the support portion by pressure.
The contact portion is provided on the first movable member.
The lens storage container according to claim 1. Claims 1 to 7 are characterized in that the first movable member presses the support portion from the first direction so that the tip end side of the support portion enters the lower side of the optical portion. The lens storage container according to any one of the above items. One of claims 1 to 8 , wherein the second movable member presses the optical portion from the second direction so that the optical portion is folded in an inverted U shape. The lens storage container described in the section. 19 . The lens storage container according to any one of the items. The erroneous operation prevention mechanism is
A first erroneous operation prevention unit provided on the first movable member,
A second erroneous operation prevention unit provided on the second movable member,
Have,
When the second movable member is moved in the second direction and then the first movable member is moved in the first direction, the first erroneous operation prevention unit and the second erroneous operation prevention unit are prevented. The lens storage container according to claim 10 , further comprising being configured to prevent the movement of the first movable member by contact with the portion. The second movable member is movable between the movement start position and the movement end position in the second direction.
The erroneous operation prevention mechanism is
It is configured to allow the movement of the first movable member in the first direction only when the second movable member is arranged at the movement start position in the second direction. The lens storage container according to claim 10 or 11. The first movable member is movable between the movement start position and the movement end position in the first direction.
The erroneous operation prevention mechanism is
It is configured to allow the movement of the second movable member in the second direction only when the first movable member is arranged at the movement start position or the movement end position in the first direction. The lens storage container according to any one of claims 10 to 12 , wherein the lens storage container is characterized by the above. The lens storage container according to any one of claims 1 to 13 , further comprising the intraocular lens mounted on the lens mounting portion. The container body is
The first attached portion to which the first movable member is attached, and
A second attached portion to which the second movable member is attached, and
Have
The lens storage container according to any one of claims 1 to 14, wherein the lens storage container is characterized by the above.

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