Artificial anterior chamber device for ophthalmologic operation

Abstract

The utility model relates to the technical field of ophthalmologic operation equipment, in particular to an artificial anterior chamber device for ophthalmologic operation, which comprises an artificial anterior chamber, a compression ring and a height fixing ring, the artificial anterior chamber comprises a ring edge and a raised surface, the raised surface is arranged in the middle of the upper part of the ring edge, the artificial anterior chamber has elasticity, and the compression ring is arranged on the raised surface. The cornea is placed on the top of the artificial anterior chamber, the pressing ring is tightly pressed on the cornea in a non-sliding mode, the height fixing ring comprises a height fixing ring body, a column and a supporting foot, the height fixing ring body is tightly pressed on the pressing ring in a non-sliding mode, the column used for installing a micro cornea cutting knife rotating motor is arranged on the top of the height fixing ring body, and the supporting foot is arranged on the column. And the height fixing ring body is provided with supporting legs. The artificial anterior chamber device for the ophthalmologic operation effectively provides proper curvature and elastic supporting force of the cornea posterior lamella, and the cornea posterior lamella with the required accurate thickness can be cut at a time.

Description

Technical Field

[0001] The utility model relates to the technical field of ophthalmic surgical equipment, in particular to an artificial anterior chamber device for ophthalmic surgery. Background Art

[0002] The cornea is a transparent structure located on the outer layer of the front of the eyeball. It protects the eyeball from environmental influences and provides two-thirds of the refractive power. It is an important part of the visual system. Corneal diseases or injuries may cause serious visual impairment or even blindness. The cornea is divided into 5 layers from front to back, namely the epithelial cell layer, the anterior elastic layer, the stroma, the posterior elastic layer and the endothelial cell layer. For patients with corneal blindness, the most effective treatment is corneal transplantation. Due to the severe shortage of donated corneas, in order to make full use of every cornea and provide precision medicine according to the corneal condition of patients with corneal blindness, the current surgical methods mainly include: 1. Penetrating keratoplasty, 2. Anterior lamellar keratoplasty, 3. Endothelial keratoplasty.

[0003] The currently available artificial anterior chamber devices for surgery are mainly made of stainless steel metal, and also have a more complex mechanical structure. They are expensive and imported products. The donor cornea is mainly placed on a main body with a groove and a channel with the epithelial layer facing up. After tightening and fixing, air or water is injected into the groove through the channel to form an anterior chamber and intraocular pressure similar to that of the human eye. Then, a micro corneal lamellar cutter is used to cut off the anterior lamellar layer of the donor cornea. The anterior lamellar layer includes the epithelial cell layer and the anterior elastic layer; if the posterior lamellar layer needs to be obtained, the posterior lamellar layer includes the posterior elastic layer and the endothelial cell layer, and then it is cut twice, each time using a new blade, and the remaining part is the required corneal posterior lamellar layer. However, increasing the number of cutting times will lead to inaccurate thickness of the cornea left, or cutting too deep, damage to the posterior lamellar layer, and other problems. Therefore, in order to obtain the posterior lamellar layer of accurate thickness, the cornea should be turned over, with the endothelial cell layer facing up and the epithelial cell layer facing down, and placed on the artificial anterior chamber device for surgery, and the corneal posterior lamellar layer can be cut out at one time. This reduces the steps of the operation.

[0004] However, the existing artificial anterior chamber device cannot meet the requirements of such operation. The upper surface of its main body does not have a curvature that completely fits the corneal epithelial cell layer after turning over, and cannot provide suitable elastic support force for cutting the posterior corneal lamellae. Therefore, an artificial anterior chamber device for ophthalmic surgery is proposed. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an artificial anterior chamber device for ophthalmic surgery, which effectively provides a suitable corneal posterior lamella curvature and elastic support force, and realizes one-time cutting of the corneal posterior lamella with the required accurate thickness.

[0006] The technical solution of the utility model is as follows:

[0007] An artificial anterior chamber device for ophthalmic surgery comprises an artificial anterior chamber, a pressure ring and a height-fixing ring, wherein the artificial anterior chamber comprises a ring edge and a convex surface, wherein the convex surface is arranged at the upper middle position of the ring edge, the artificial anterior chamber is elastic, the cornea is placed on the top of the artificial anterior chamber, and is pressed against the cornea without sliding by the pressure ring, the height-fixing ring comprises a height-fixing ring body, a column and a supporting foot, the height-fixing ring body is pressed against the pressure ring without sliding, a column for installing a micro-corneal cutting knife rotating motor is arranged on the top of the height-fixing ring body, and the height-fixing ring body is provided with a supporting foot.

[0008] In order to make the artificial anterior chamber elastic, it is made of silicone material.

[0009] The pressure ring is made of stainless steel.

[0010] A handle is provided on the top of the height-fixing ring for easy operation.

[0011] The height setting ring is made of stainless steel.

[0012] There are at least three supporting legs, which are evenly distributed on the height-fixing ring body.

[0013] The supporting foot is a structure that protrudes horizontally from the height-fixing ring body and then bends 120 degrees to obliquely downward.

[0014] In order to allow the pressure ring to be pressed against the pressure ring without sliding and to press the cornea against the artificial anterior chamber, saw teeth A are provided on the edge of the ring, and saw teeth B meshing with the saw teeth A are provided on the pressure ring.

[0015] In order to make the height fixing ring body, a saw tooth C cooperating with the saw tooth B is arranged at the bottom of the height fixing ring body.

[0016] The convex surface is completely fitted with the cornea, and the elastic silicone artificial anterior chamber with a specific curvature is completely fitted with the donor cornea.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses an artificial anterior chamber device for ophthalmic surgery, which can directly and effectively obtain the posterior corneal lamellae; the curvature of the elastic silicone artificial anterior chamber and the height of the stainless steel height-fixing ring are of different models, which can be suitable for cutting different thicknesses; the structure is simple, the parts are few, the use is convenient, and the operation is stable; in particular, the appropriate curvature provided by the elastic silicone artificial anterior chamber enables one lamellae cutting blade to cut out 50-100 posterior corneal lamellae; it is beneficial for ophthalmologists to practice operations and for enterprises to save costs when converting heterogeneous corneas into artificial corneas for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an artificial anterior chamber device for ophthalmic surgery according to an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of an artificial anterior chamber of an artificial anterior chamber device for ophthalmic surgery according to an embodiment of the utility model;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of a pressure ring of an artificial anterior chamber device for ophthalmic surgery according to an embodiment of the utility model;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of a height-fixing ring of an artificial anterior chamber device for ophthalmic surgery according to an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the bottom structure of a height-fixing ring of an artificial anterior chamber device for ophthalmic surgery according to an embodiment of the utility model;

[0026] The components represented by the reference numerals in the figure are:

[0027] The utility model includes: 1. artificial anterior chamber, 11. ring edge, 111. sawtooth A, 12. raised surface, 2. pressure ring, 21. sawtooth B, 3. height setting ring, 31. height setting ring body, 311. sawtooth C, 32. handle, 33. column, 34. supporting foot, 4. cornea. DETAILED DESCRIPTION

[0028] like Figure 1 As shown, the artificial anterior chamber device for ophthalmic surgery includes an artificial anterior chamber 1, a pressure ring 2 and a height setting ring 3.

[0029] like Figure 2 As shown, the artificial anterior chamber 1 includes a ring edge 11 and a convex surface 12, and the convex surface 12 is arranged in the upper middle position of the ring edge 11. The artificial anterior chamber 1 is elastic, and the cornea 4 is placed on the top of the artificial anterior chamber 1, and the pressure ring 2 is pressed against the cornea 4 without sliding.

[0030] like Figure 4As shown, the height determining ring 3 includes a height determining ring body 31, a column 33 and a supporting foot 34. The height determining ring body 31 is pressed onto the pressure ring 2 without sliding. A column 33 for installing a micro corneal cutting blade rotating motor is arranged on the top of the height determining ring body 31. The height determining ring body 31 is provided with a supporting foot 34.

[0031] The artificial anterior chamber 1 is made of silicone material; the pressure ring 2 is made of stainless steel material.

[0032] A handle 32 is provided on the top of the height-fixing ring 3 ; the height-fixing ring 3 is made of stainless steel.

[0033] At least three supporting legs 34 are provided, and are evenly distributed on the height-fixing ring body 31 ; the supporting legs 34 are a structure that protrudes horizontally from the height-fixing ring body 31 and then bends 120 degrees to obliquely downward.

[0034] The ring edge 11 is provided with saw teeth A111, such as Figure 3 As shown, the pressure ring 2 is provided with a sawtooth B21 meshing with the sawtooth A111; Figure 5 As shown, a saw tooth C311 matching with the saw tooth B21 is provided at the bottom of the height fixing ring body 31 .

[0035] The convex surface 12 is in complete contact with the cornea 4 .

[0036] In a specific embodiment:

[0037] Before ophthalmic surgery, a corneal posterior lamellar graft artificial anterior chamber device is prepared, which includes a stainless steel height-fixing ring, a stainless steel inner serrated pressure ring and an elastic silicone artificial anterior chamber. The convex surface of the silicone artificial anterior chamber is for the biological corneal epithelium to adhere to, and the convex and concave teeth on the edge of the artificial anterior chamber ring are matched with the bottom of the inner serrated pressure ring; the upper surface of the inner serrated pressure ring is matched with the inner edge of the bottom of the height-fixing ring in the same shape; the inner diameters of the artificial anterior chamber, the inner serrated pressure ring and the edge of the height-fixing ring all have the same equidistant convex teeth or concave teeth; the upper surface of the height-fixing ring is provided with a handle and a short columnar protrusion connected to the rotating motor of the micro-corneal cutting knife, the edge of the height-fixing ring is provided with three equidistantly distributed and equal-length supporting feet, which are bent 120° downward after protruding horizontally, and the inner edge of the bottom of the height-fixing ring is provided with convex teeth and concave teeth that fit with the upper surface of the inner serrated pressure ring.

[0038] When using the artificial anterior chamber device for preparing corneal posterior lamellar grafts before ophthalmic surgery designed by the present invention, the cornea with a circle of sclera about 7-9 mm wide is turned over so that the endothelial layer faces upward, and the epithelial layer is buckled and fitted on the elastic silicone artificial anterior chamber device downward; the stainless steel inner serrated pressure ring is pressed on the sclera with a certain force to ensure that the donor cornea and the elastic silicone artificial anterior chamber fit tightly without sliding, and the corneal endothelial layer is exposed; after the stainless steel height-fixing ring is connected to the micro-corneal lamellar cutting knife, the handle of the stainless steel height-fixing ring is held and placed in the central area of ​​the corneal endothelial layer, and the three feet of the ring are supported on the table. The three feet play the role of fixing the height. After ensuring that there is no sliding between the stainless steel height-fixing ring and the cornea, the micro-corneal lamellar cutting knife is started to cut.

[0039] The elastic silicone artificial anterior chamber with a specific curvature fits the donor cornea perfectly, supporting it to protrude from the stainless steel height setting ring, meeting the cutting requirements of the micro-corneal lamellar cutter; at the same time, the three feet of the stainless steel height setting ring are height-determined to ensure that even different operators can cut out the same thickness, eliminating the influence of human factors and operating experience.

[0040] The artificial anterior chamber device for ophthalmic surgery can directly and effectively obtain the posterior corneal lamella; the elastic silicone artificial anterior chamber has different curvatures and the heights of the stainless steel height-setting ring, which can be suitable for cutting different thicknesses; it has a simple structure, few parts, is easy to use, and has stable operation; in particular, the appropriate curvature provided by the elastic silicone artificial anterior chamber enables one lamella cutting blade to cut out 50-100 posterior corneal lamellae; it is beneficial for ophthalmologists to practice operations and for enterprises to save costs when converting xenogeneic corneas into artificial corneas for mass production.

Claims

1. An artificial anterior chamber device for ophthalmic surgery, characterized in that: The invention comprises an artificial anterior chamber (1), a pressure ring (2) and a height-fixing ring (3). The artificial anterior chamber (1) comprises a ring edge (11) and a convex surface (12). The convex surface (12) is arranged at the middle position of the upper part of the ring edge (11). The artificial anterior chamber (1) is elastic. The cornea (4) is placed on the top of the artificial anterior chamber (1). The pressure ring (2) is pressed against the cornea (4) without sliding. The height-fixing ring (3) comprises a height-fixing ring body (31), a column (33) and a supporting foot (34). The height-fixing ring body (31) is pressed against the pressure ring (2) without sliding. A column (33) for mounting a micro-corneal cutting knife rotating motor is arranged on the top of the height-fixing ring body (31). The height-fixing ring body (31) is provided with a supporting foot (34).

2. An artificial anterior chamber device for ophthalmic surgery according to claim 1, characterized in that: The artificial anterior chamber (1) is made of silicone material.

3. The artificial anterior chamber device for ophthalmic surgery according to claim 1, characterized in that: The pressure ring (2) is made of stainless steel.

4. The artificial anterior chamber device for ophthalmic surgery according to claim 1, characterized in that: A handle (32) is provided on the top of the height-fixing ring (3).

5. The artificial anterior chamber device for ophthalmic surgery according to claim 4, characterized in that: The height setting ring (3) is made of stainless steel.

6. The artificial anterior chamber device for ophthalmic surgery according to claim 1, characterized in that: At least three supporting legs (34) are provided, and are evenly distributed on the height-fixing ring body (31).

7. An artificial anterior chamber device for ophthalmic surgery according to claim 6, characterized in that: The support foot (34) is a structure that protrudes horizontally from the height-fixing ring body (31) and then bends 120 degrees to obliquely downward.

8. The artificial anterior chamber device for ophthalmic surgery according to claim 1, characterized in that: A saw tooth A (111) is provided on the ring edge (11), and a saw tooth B (21) meshing with the saw tooth A (111) is provided on the pressure ring (2).

9. The artificial anterior chamber device for ophthalmic surgery according to claim 8, characterized in that: Saw teeth C (311) cooperating with the saw teeth B (21) are provided at the bottom of the height-fixing ring body (31).

10. The artificial anterior chamber device for ophthalmic surgery according to claim 1, characterized in that: The convex surface (12) is completely in contact with the cornea (4).

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