JPH074017Y2 - Bandage for anterior chamber maintenance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a bandage used for maintaining an anterior chamber of an eye during an intraocular surgical operation.

[Background Art] Temporary suturing of an incision is conventionally performed in order to prevent outflow of aqueous humor and maintain the anterior chamber during intraocular surgery operations such as cataract extraction, iridectomy, and intraocular lens implantation. It is commonly done. According to this method, suturing is not limited to only once, but is required several times (twice or more), and there is a problem that the operation procedure is complicated and the operation time and operation invasion increase.

In order to solve this problem, the present applicant has already filed Japanese Patent Application No.
No. 9797, a transparent anterior chamber maintenance having a window for inserting an intraocular surgical instrument, formed so as to cover the incision during the intraocular surgery and in close contact with the incision and its surroundings. Bandage for you. This bandage prevents the outflow of aqueous humor from the incision, maintains the anterior chamber of the eye, and allows intraocular surgical instruments to be inserted through the window, eliminating the need for temporary suturing of the incision. , Intraocular surgery can be performed.

[Problems to be solved by the device]

However, since the bandage has a spherical surface and is wet, there is a drawback in that it is difficult for the operator to handle the bandage during the operation, in particular, to grip, move, and detach the bandage. Therefore, this bandage requires considerable skill in handling and cannot be handled and handled easily by all operators.

The present invention has been made in order to eliminate the above-mentioned problems, and its purpose is to make it easy for all operators to handle, such as grasp, move, and detach, regardless of their skill level. An object of the present invention is to provide an anterior chamber maintenance bandage that can be performed.

[Means for Solving the Problems]

The anterior chamber maintenance bandage of the present invention covers one incision during intraocular surgery, and one main surface has a concave shape and the other main surface has a convex shape so as to closely adhere to the incision and its surroundings. A transparent anterior chamber maintenance bandage made of a soft material having a curved cross-section and having a through hole for inserting an intraocular surgical instrument, and handling operations such as gripping, moving, and detaching the bandage. The protrusion, the recess, the through-hole, or the notch for forming is formed on the bandage.

[Action]

The bandage for maintaining the anterior chamber of the present invention includes a protrusion, a recess, and
The handling operation is performed by gripping or holding the through hole portion or the notch portion with the handling operation tool.

〔Example〕

 Next, an embodiment of the present invention will be described in detail with reference to the drawings.

Example 1 The main body 11 of the anterior chamber maintenance bandage 1 of this example shown in FIGS. 1a, 1b and 1c has a circular contour in plan view (as viewed from above), and one of The surface is convex in cross section,
The other surface is formed to be concavely curved. The material of the bandage body 11 is, for example, polyhydroxyethyl methacrylate (hereinafter referred to as HEMA homopolymer),
The dimensions are, for example, a diameter of 10 to 20 mm (preferably about 16 mm) and a center wall thickness of 0.2 to 0.5 mm (preferably about 0.4 mm).

This bandage body 11 has a window 12 for inserting a surgical instrument,
Projections 13 are formed for bandage handling operations (eg gripping, moving, detaching, etc.). The material of the protrusion 13 is preferably a HEMA homopolymer as in the bandage body 11, but other polymers may be used. In the case of the former HEMA homopolymer, it is preferable that the main body 11 and the protrusion 13 are integrally formed. Other polymer of the latter protruding part
When it is used as 13, the protrusion 13 is bonded to a predetermined position of the bandage main body 11 which is manufactured in advance by using an adhesive or the like.

The window 12 for inserting the surgical instrument is a gong, tweezers, hook,
Insert surgical instruments such as forceps, a scalpel, a suction device, a perfusion device,
This is for performing various surgical operations such as suction of residual lens cortex after delivery of lens nucleus and positioning of intraocular lens. This window 12 is, for example, in the shape of a circle with a diameter of 1.5 mm, and its center is
Radially outward from the center 14 of the contour of the bandage body 11
It is placed 6 mm away.

The protrusion 13 for handling the bandage is to be gripped by an appropriate handling operation tool (for example, tweezers, chin, etc.), and is formed and arranged so as not to interfere with the surgical operation. As is apparent from FIGS. 1a and 1b, the protruding portion 13 is a cylindrical column which is erected upward on the convex surface of the bandage main body 11 in the axial direction in the plan view (perpendicular to the paper surface of FIG. 1a). It has a shape. The diameter of this cylinder is about 2 m
m, the height is about 0.5 mm at the lowest point near the center 14 of the bandage body 11. Further, the projecting portion 13 is, in a plan view, on a straight line orthogonal to the straight line connecting the center 14 of the bandage main body and the center of the window 12 and passing through the center 14 of the bandage main body, and about 6 mm radially outward from the center 14 of the bandage main body. A pair is formed in a distant position in point symmetry with respect to the center 14.

The shape, material, dimensions, number, and
The position and the like are not limited to the above, and can be arbitrarily selected under the condition that the surgical operation is not hindered. For example, as for the shape, a rectangular parallelepiped or another shape can be selected instead of the cylinder. Since this rectangular parallelepiped has a flat surface in contact with an instrument used for handling operation, handling operation is easy. Further, the size of the protrusion 13 is the diameter (in the case of a cylinder or other shape) or the length of one side (in the case of a rectangular parallelepiped).
Is 1 to 10 mm (preferably 2 to 5 mm), and the height is 0.1 to 0.5 mm at the lowest point near the center 14 of the bandage body.
(Preferably 0.2 to 0.5 mm) is suitable. The tip of the protrusion does not have to be flat and may be curved in an arc shape. Further, the number may be one, or may be three or more. Further, the position of the protruding portion 13 is preferably separated from the window 12 or the center 14 of the bandage main body so as not to interfere with a surgical operation or intraocular observation.

Second Embodiment In the case of the anterior chamber maintenance bandage 2 of the present embodiment shown in FIGS. 2a and 2b, the protrusion 23 for handling operation is formed in a loop shape. That is, a hole is formed in the protrusion 23. The handling operation of the bandage 2 is performed with the handling operation tool inserted in this hole. Also in the case of this embodiment, the shape, material, size, number, position, etc. of the protrusions 23 can be arbitrarily selected.

Third Embodiment In the case of the anterior chamber maintenance bandage 3 of this embodiment shown in FIGS. 3a and 3b, the protruding portion 33 is formed in a cylindrical shape and is arranged concentrically with the bandage main body 31. . Appropriate dimensions of the cylindrical protrusion 33 are an outer diameter of 6 to 10 mm, an inner diameter of 5 to 8 mm, and a maximum height of 0.1 to 0.5 mm near the outer periphery of the bandage body 31.

The size, material, position and number of the cylindrical protrusion 33 can be arbitrarily selected. For example, a relatively small cylinder having the same outer diameter as the cylindrical protrusion 13 of the first embodiment and an appropriate cylindrical portion thickness can be used. This makes the handling operation easier. In the case of this modification, the number of protrusions is at least one and the arrangement position may be the same as that of the cylindrical protrusion 13 of the first embodiment, but may be different.

Further, the cylindrical protrusion 33 may be formed by cutting out a part of the circumference thereof. In this case, the cylindrical protrusion 33 is preferably partially cut out in the region of the surgical instrument insertion window 32 so as not to interfere with the surgical operation.

Example 4 In the case of the anterior chamber maintenance bandage 4 of this example shown in FIGS. 4a and 4b, a recess 43 is formed instead of the protrusion 13 of Example 1. Although the recess 43 has a cylindrical shape, it may have a rectangular parallelepiped shape, a triangular prism shape, or the like. Further, the bottom surface of the recess 43 does not have to be a flat plate shape, and can have any shape.

The cylindrical recess 43 has an inner diameter of 1 to 5 mm and a depth of the deepest portion of 0.1 to
0.3 mm is preferable.

In the case of a rectangular parallelepiped recess, the length of one side in plan view is 1
〜5mm, and the depth of the deepest part is 0.1〜0.3mm.

Due to the structural difference from the above-mentioned protrusions 13, 23, 33,
In the case of 43, it is practically advantageous to provide two or more.
Further, from the viewpoint of the contact area between the recess 43 and the handling operation tool, a rectangular parallelepiped recess having a flat contact surface is preferable to a cylindrical recess.

Embodiment 5 In the case of the anterior chamber maintenance bandage 5 of this embodiment shown in FIG. 5, a notch portion 53 is formed in the outer peripheral portion of the bandage main body 51 for handling operation. The cutout portion 53 has a shape cut out by three sides of a quadrangle in a plan view.
In the case of this embodiment, in order to minimize the risk of the bandage handling operation device coming into contact with the corneal epithelium, the notch
It is better to arrange 53 near the outer periphery of the bandage 5.
In this case, the length of the notch 53 in the bandage center 54 direction is
0.1 to 2.0 mm is preferable. In addition, in order to reduce the outflow of the aqueous humor, a notch is provided at a position away from the window 52 near the incision.
It is preferable to arrange 53.

The cutout portion 53 is not limited to the above, and may have a shape cut out by two sides of a triangle in a plan view, or may be cut out by an arc. Further, for the handling operation of the bandage 5, two or more notches 53 are structurally desirable, but two notches 53 are preferable in order to minimize the outflow amount of the aqueous humor.

Embodiment 6 In the case of the anterior chamber maintenance bandage 6 of this embodiment shown in FIG. 6, a through hole portion 63 is formed near the outer periphery of the bandage body 61 for handling operation. The through hole portion 63 penetrates the bandage main body 61 in the axial direction in the plan view (perpendicular to the paper surface of FIG. 6). The through-hole portion 63 has a circular shape in plan view, but may have another shape such as a triangle or a quadrangle.

For handling the bandage 6, it is desirable that the number of the through holes 63 is two or more, but in order to minimize the outflow amount of the aqueous humor, the number of the through holes 63 is preferably two.

The position of the through hole portion 63 is preferably near the outer periphery of the bandage main body 61 in order to minimize the risk of the instrument for handling the bandage coming into contact with the corneal epithelium. In this case, the through hole 63 is
It is desirable to arrange it at a position that does not penetrate toward the center of the bandage body 61 from the outer periphery of the bandage by 2.0 mm or more. Further, in order to reduce the outflow amount of the aqueous humor, it is preferable that the through-hole portion 63 be located away from the window 62 in the vicinity of the incision.

Embodiment 7 In the case of the anterior chamber maintenance bandage 7 of this embodiment shown in FIG. 7, the balls 75 at both ends of the loop 73 are embedded in the bandage main body 71, and the loop 73 between the two balls 75. Are formed so as to be exposed to the outside. In this case, the loop 73 is shown in Figures 2a and 2b.
Similar to the loop 23 of the second embodiment shown in the figure, it is regarded as a protrusion in the present invention and is grasped by a handling operation tool such as tweezers. The balls 75 on both ends loop from the bandage body 71.
It has the effect of making 73 hard to come off. The bandage 7 with a loop is obtained by placing a loop 73 having spheres 75 at both ends at a predetermined position on the inner surface of the mold when the bandage is obtained by casting polymerization, and then polymerizing the bandage-forming monomer. Can be obtained by When the loop 73 is attached to the obtained bandage main body 71, the loop 73 is separated from the bandage main body 71 with tweezers or the like. The material of the loop 73 is, for example, nylon fiber, vinylidene fluoride fiber, polypropylene fiber, polymethylmethacrylate fiber, carbon fiber, metal wire such as platinum and silver, stainless wire, the diameter of which is 0.05 to 1.0 mm, preferably 0.1. ~ 0.5 mm.

Embodiment 8 In the anterior chamber maintenance bandage 8 of this embodiment shown in FIG. 8, about half of the ring 83 is embedded in the main body 81 of the bandage, and the other half is exposed to the outside. In this case, the exposed portion of the ring 83 is regarded as a protrusion in the present invention,
It is gripped by a handling operation tool such as tweezers. The manufacturing method of the bandage 8 with a ring and the material and size of the ring 83 are the same as those of the bandage 7 and the loop of the seventh embodiment.
Same as for 73.

Example 9 In the case of the anterior chamber maintenance bandage 9 of the present example shown in FIG. 9, the ball 95 at one end of the filament 93 is embedded in the bandage main body 91, and the filament 93 is exposed to the outside. It's free. In this case, the thread-like material 93 is regarded as a protruding portion and is gripped by the handling operation tool. The method of manufacturing the bandage 9 with the filamentous material and the material and size of the filamentous material 93 are the same as those of the bandage 7 and the loop 73 of the seventh embodiment.

As a result of actually carrying out handling operations such as gripping, moving, and detaching the bandages of the above-described examples, all the bandages of the examples were easy for the operator to handle.

The shape, material, size, position and number of the protrusions, depressions, through holes and notches of the anterior chamber maintenance bandage according to the present invention are not limited to those shown in the above-mentioned embodiment. As long as the condition that the surgical operation is not hindered is satisfied, it can be arbitrarily selected.

The material of the main body of the bandage of the present invention is preferably transparent so that the surgical operation in the eye can be observed and has elasticity so as to adhere to the cornea, sclera, conjunctiva and the like. Further, it is preferable to use a substance which has a property of not adversely affecting the contact site of the cornea, sclera, conjunctiva and the like and aqueous humor and is soft so as not to damage the contact site of the cornea, sclera, conjunctiva etc. As a specific material, the above-mentioned HEMA homopolymer or HEMA and another monomer (for example, alkyl (meth) such as methyl methacrylate)
Acrylate) copolymer hydrogel, vinylpyrrolidone other monomer (eg, methyl methacrylate or other alkyl (meth) acrylate) copolymer hydrogel, polyvinyl alcohol polymer hydrogel, silicone rubber, Butyl rubber is suitable.

The bandage body of the present invention preferably has a diameter of 10 to 20 mm and a center wall thickness of 0.2 to 0.5 mm.

Although the window for inserting the surgical instrument of the bandage of the present invention is circular in the above-mentioned embodiments, it can be formed in various shapes as shown in Japanese Patent Application No. 63-9797. . Further, the shape, size, position and number of windows can be selected according to the surgical instrument used.

The bandage of the present invention is used according to the method of use described in Japanese Utility Model Application No. 63-9797.

[Effects of the Invention] As described above, the bandage for maintaining the anterior chamber of the present invention has the protrusion, the depression, and the
Since it has a through hole or notch, it can be handled easily and with confidence by the handling operation tool, regardless of the skill of the operator, greatly reducing the burden on the operator during operation. It also reduces the risk of damage to living tissue during handling. Therefore, the bandage for maintaining the anterior chamber of the present invention has an extremely excellent advantage in practical use.

[Brief description of drawings]

FIG. 1a is a front view of the anterior chamber maintenance bandage according to the first embodiment of the present invention, and FIG. 1b is the bandage Ib-Ib shown in FIG. 1a.
Sectional view along the line, Figure 1c is a sectional view along the line Ic-Ic of the bandage shown in Figure 1a, Figure 2a is a front view of the anterior chamber maintenance bandage according to Example 2, and Figure 2b. Is a cross-sectional view of the bandage shown in FIG. 2a taken along line IIb-IIb, FIG. 3a is a front view of the anterior chamber maintenance bandage according to Example 3, and FIG. 3b is a bandage IIIb of FIG. 3a. -IIIb sectional view, Figure 4a is a front view of an anterior chamber maintenance bandage according to Example 4, and Figure 4b is a bandage IVb-IV shown in Figure 4a.
Sectional drawing along line b, FIG. 5 is a front view of an anterior chamber maintaining bandage according to Example 5, FIG. 6 is a front view of an anterior chamber maintaining bandage according to Example 6, and FIG. 7 is an example. 7 is a front view of the anterior chamber maintaining bandage according to Example 7, FIG. 8 is a front view of the anterior chamber maintaining bandage according to Example 8, and FIG. 9 is a front view of the anterior chamber maintaining bandage according to Example 9. 1,2,3,4,5,6,7,8,9 …… Bandage, 11,21,31,41,51,6
1,71,81,91 …… Bandage body, 12,22,32,42,52,62,7
2,82,92 …… Window, 13,23,33,73,83,93 …… Projection, 43 ……
Recess, 53 ... Notch, 63 ... Through hole, 14,24,34,4
4,54,64,74,84,94 …… The center of the bandage body, 75,95…
…ball

Claims (1)

[Scope of utility model registration request] 1. A main surface is concave and the other main surface is convex so that the incision is covered and closely adhered to the incision and its surroundings during intraocular surgery. A transparent anterior chamber maintenance bandage made of a soft material having a shape and having a through hole for inserting an intraocular surgical instrument, and a protrusion for gripping, moving, and detaching the bandage. An anterior chamber maintenance bandage, characterized in that a recess, a through hole or a notch is formed in the bandage.