JP3005330U - Intraocular lens folding jig - Google Patents

Abstract

(57) [Abstract] [Purpose] You can fold a silicone lens that can be folded in half or set all the double lenses, and you can fold it in two, regardless of the user. It is to be able to hold the lens in a folded state with a constant force. [Structure] One end side of a pair of holding bodies 1 and 2 having a band-like shape is abutted and fixed to each other, and the holding bodies 1 and 2 are gradually released from the fixed one end side toward the other end side. A lens folding part 4 which opens and closes to the opening side and intersects the middle part of the release other end side to open and close in parallel from the intersection part 3 to the release other end side, and the folding part 4 is fixed to the fixing one end side. The operation units 5 that are elastically closed and that are opened against the elastic force are respectively provided. A lens set step 6 is provided on the inner surface of the open ends of the two holding pieces 4-1 and 4-2 which are opened and closed in parallel with the lens folding section 4 and on which the notched lens A is placed toward the edge of the end. By doing so, a silicone lens A that can be folded in two
Alternatively, it is possible to fold it in half simply by setting all the fortable lenses.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is intended for use in a patient with a cataract, which is often caused by ocular disorders, especially in the elderly whose lens is pathologically clouded with age, when the intraocular lens is inserted by a simple corneal incision or schinotomy. The present invention relates to a folding jig used for folding in two.

[0002]

[Secondary technology]

 This type of intraocular lens that has been known in the past is made of acrylic resin and has an outer diameter of approximately 6 to 7 mm. It is inserted into many cataract patients and effectively restores visual acuity. ing. However, in order to attach the intraocular lens by open surgery, it is necessary to make an incision in the cornea that is at least about 9 to 10 mm larger than the outer diameter of the intraocular lens. Patients are slow to recover after surgery. In other words, medical treatment in recent years has tended to cut the affected area as small as possible and treat it, which alleviates post-operative pain in the patient and accelerates recovery.

Therefore, in recent years, an intraocular lens made of a silicone-based resin that can be folded in two has been developed. By using this silicone lens or all of the fortable lenses, the above-mentioned opening can be made larger than the lens outer diameter. Since the lens can be folded in half without making a large incision, it has become possible to make an incision of about half the outer diameter of the lens and insert it without expanding the wound opening.

[0004]

[Problems to be solved by the device]

 However, the jigs (tools), which are conventionally used to insert this type of intraocular lens through an incised wound, are formed into a thin shape like a commonly known pin set. Since it is for grasping (sandwiching) an object at the tip holding part, it is not possible to fold the lens in two using this claw, when the lens was developed so that it can be folded in two. Therefore, in reality, a wound of about 9 to 10 mm is incised in the cornea as described above, and the wound is expanded and the lens is grasped and inserted by the glove.

The present invention has been made in view of such conventional circumstances, and can be folded in two simply by setting a double-foldable lens made of silicone or all fortable lenses, and used. It is an object of the present invention to provide a folding jig that can hold a lens in a two-fold state with a constant force that does not damage the lens regardless of person.

[0006]

[Means for achieving the object]

 The technical means taken by the present invention to achieve the above-mentioned object is to attach one end side of a pair of strip-shaped holding bodies by abutting and fixing them and release the holding body from the fixed one end side to the other end side. Toward each other, the lens folding portion is opened and closed in a substantially C-shape toward the opposite side, and the middle portion of the release other end side is crossed, and the lens folding portion that opens and closes in parallel to the release other end side from the intersection is provided on the fixed one end side. The folding part is elastically closed and an operating part is provided to open against the resilience, and the inner edges of the open ends of the two holding pieces that are opened and closed in parallel with the lens folding part are the edges of the ends. The gist is that a stepped portion of the lens set on which the notched lens is placed is provided toward the. Further, the gist is that the stepped notch surface of the lens set stepped portion reaching the open end portions of the both holding pieces is a lens holding surface which is gradually inclined toward the open end portions toward each other.

[0007]

[Work]

 Thus, according to the above-mentioned technical means of the present invention, both holding pieces of the lens folding portion are opened by performing an operation of grasping the operating portion against its resilience. By setting the lens on the stepped part of the lens set of both opened holding pieces and releasing the gripped state of the operating part, both holding pieces are closed by the restoring elastic force of the operating part and the lens is repelled. Fold it in half. Further, the lens folded in half by the above operation is held by the lens holding surface of the lens set step portion without being separated from the step portion.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a folding jig, in which one end side (rear end side) of a pair of strip-shaped holding bodies 1 and 2 is attached. The holding bodies 1 and 2 are fixedly attached to each other and gradually expanded in a substantially C-shape toward the other end side (the tip side) to be released from the fixed one end side, and the middle portions of the released other end side are crossed. Now, the lens folding part 4 that opens and closes in parallel to the other end of the opening from the crossing part 3 is elastically urged toward the closing direction while the folding part 4 is elastically urged toward the fixing one end. Each of the lens folding sections 4 will be described later by providing each operation section 5 that opens against the force, grasping the operation section 5 against the elastic force, and releasing the grasped state. The two holding pieces 4-1 and 4-2 are opened substantially parallel to each other, and the elastic force is used to close the holding pieces 4-1 and 4-2 substantially parallel to each other. It A lens set step 6 is formed on the inner surface of the open end of each of the holding pieces 4-1 and 4-2 to mount the lens A, which is notched toward the edge of the end.

The pair of holding bodies 1 and 2 are formed of a desired elastic material in the shape of a band plate having a predetermined plate width and length, and the front end side on which the lens folding part 4 is formed from the fixed rear end side. It is possible to form a lens set step portion 6 on the inner surface of the tip of the folding portion 4 by notching the thickness of the lens folding portion 4 at a constant thickness in the portion where the lens folding portion 4 is formed. It is designed to work. Then, while the rear end sides of the pair of holding bodies 1 and 2 are brought into contact with each other, they are integrally fixed by a desired welding means such as brazing, and the rear end fixing base is gradually cut from the front end side toward the front end side. By bending and expanding the holding bodies 1 and 2 in a V-shape, elastic force is applied to the holding bodies 1 and 2 in a direction toward or away from each other.

The lens folding portion 4 is formed on the releasing front end side with the intersecting portion 3 as a boundary by folding and interleaving the middle portions of the holding bodies 1 and 2 on the releasing front end side so as to intersect with each other. , At the crossing part 3, one of the holding bodies 1 and 2 is provided with a crossing notch 3-1 in the width direction and from the half of the holding body 1 toward the open end, and the other holding body 2 has the same width from the opposite side. By providing a cross cutout 3-2 in the direction and from the half of the cutout toward the open end, and bending both of them from the roots of the cutouts 3-1, 3-2 so as to cross each other, Providing slender holding pieces 4-1 and 4-2 extending from the intersection 3 to the open end side in a thin state with a constant thickness.

The holding pieces 4-1 and 4-2 are operated substantially parallel to each other by performing an operation of gripping the operating portion 5 formed in the range from the crossing portion 3 to the rear end fixing base portion against the resilient force thereof. By opening and then releasing the gripped state of the operating portion 5, the operating portion 5 automatically returns to the original expanded state, and the elastic force of the operating portion 5 causes the movement to close in a substantially parallel manner. By bending the root portions so as to face each other in parallel, they are formed so that they can always face each other in a substantially parallel state in the closed state and the open state. Then, a lens set step portion 6 is provided on the inner surfaces of the ends of the holding pieces 4-1 and 4-2 which are released.

The lens set step portion 6 is mounted on the intraocular lens A so as to straddle the intraocular lens A in a state where both holding pieces 4-1 and 4-2 are opened against the elastic force of the operation portion 5. It has the function of folding A in half, and is a shape that is tilted in one direction on the inner surface of the open end of both holding pieces 4-1 and 4-2 so that it is parallel to the diagonally cut edge of the same end. It is formed by cutting one step lower so that it is released toward the edge of the same end. Then, the lens holding in which the stepped notch surfaces of the lens set stepped portion 6 reaching the release ends of both the holding pieces 4-1 and 4-2 are gradually inclined so as to approach each other as close as possible to the release end side. The surface 7 is provided, and the two holding surfaces 7 hold the lens A folded in two so as not to fall out from between the step portions 6. That is, the opening shape toward the open end of both holding pieces 4-1 and 4-2 secured between both stepped portions 6 is gradually narrowed (see (b) in FIG. 2). (Refer to), the lens A folded in two is not removed unless the holding pieces 4-1 and 4-2 are opened.

Then, by grasping the operating portion 5 of the folding jig configured as described above against the elastic force, the two holding pieces 4-1 and 4-2 of the lens folding portion 4 are set to the lens A. It can be opened as needed (Fig. 1 (c) and Fig. 2 (a)). In that state, set the lens A on the lens set step 6 and then grasp the operating part 5. By releasing the state, the two holding pieces 4-1 and 4-2 are closed by the restoring elastic force of the operation portion 5 returning to the original position, and the lens A is folded in half (state of FIG. 2B). Therefore, according to the folding jig of the present embodiment, it is possible to fold it in half simply by setting the silicone lens A capable of being folded in half or all of the fortable lenses, and the folding can be performed in the operating portion 5. Since the structure is performed by the restoring elastic force applied to the lens A, the lens A can be folded without applying an excessive force to the lens A. That is, the lens A can be folded in half with a constant force that does not damage the lens A. The folded lens A can be held by the lens holding surface 7 of the step portion 6 so as not to come off. Therefore, it is possible to insert the lens A folded in two without expanding the opening of the cornea that has been incised by the jig (tool) shown in the figure, which is conventionally used and is called a gill. Become.

[0014]

[Effect of device]

 Since the folding jig for the intraocular lens of the present invention is constructed as described above, it has the following effects. ． Open the two holding pieces of the lens folding part by holding the operation part against the resilience, set the lens on the lens set step part of the both holding parts, and then release the holding state of the operation part. By doing so, both the holding pieces are closed by the restoring elastic force of the operation portion, and the lens can be folded in two by the elastic force. ． The lens between the lens set stepped portions folded in two by the above operation is held by the lens holding surface of the stepped portion so as to be separated from the stepped portion.

Therefore, according to the folding jig of the present invention, a double-foldable silicone lens or all of the fortable lenses can be folded by simply setting them on the opened lens set step. Since the structure is such that the folding is performed by the restoring elastic force applied to the operation portion, the lens can be folded without applying an excessive force to the lens. That is, regardless of the user, the lens can be folded in two with a constant force without damaging the lens. Then, the folded lens can be held by the lens holding surface of the step portion so as not to come off.

[Brief description of drawings]

1A and 1B are perspective views showing an embodiment of a folding jig of the present invention, in which FIG. 1A is a perspective view seen obliquely from above, FIG. 1B is a perspective view seen obliquely from below, and FIG. The same perspective view of the open state of the folding part seen from diagonally above

FIG. 2 is an enlarged view showing a main part, (a) is a plan view of the lens folding part in an open state, (b) is a plan view of the same in a closed state, and (c) is a ha-ha line of (b). Sectional view along

[Explanation of symbols]

1, 2 ... Holding body 3 ... Crossing part 4 ... Lens folding part 4-1, 4-2 ... Holding part 5 ... Operating part 6 ... Lens set step part 7 ... Lens holding surface A ... Intraocular lens

Claims (2)

[Scope of utility model registration request] 1. A pair of holding members each having a strip shape are abutted and fixed to each other by abutting and fixing the holding members, and the holding members are gradually spread and opposed to each other toward the other end to release from the fixed one end. A lens folding portion that opens and closes in parallel to the opening other end side from the intersecting portion by intersecting the middle part on the other end side of the release, and elastically closes the folding part on the fixed one end side A lens set in which operating parts are provided to open against the elastic force, and further, a lens having a notch is mounted on the inner surface of the open end of both holding pieces that open and close in parallel with the lens folding part toward the end edge thereof. A folding jig for an intraocular lens, which is provided with a step portion. 2. The folding jig according to claim 1, wherein the stepped notch surfaces of the lens set step portions that reach the release ends of the two holding pieces are gradually inclined toward each other toward the release end side. A jig for folding an intraocular lens, which is characterized by having a lens holding surface.