Cornea layering fixator

Abstract

The invention relates to a cornea layering fixator which solves the problem that an existing cornea layering fixator is inconvenient to use. The supporting seat is of a sleeve-shaped structure, a supporting table is arranged at the top of the supporting seat, the periphery of the supporting seat is sleeved with the pressing piece, a cornea pressing edge is arranged on the pressing piece, a center hole allowing a cornea endothelial cell layer to be exposed is formed in the middle of the pressing piece, and the pressing piece and the supporting seat are fixed through the fastening piece; the jacking column is movably connected with the inner wall of the sleeve of the supporting base, and an arc protrusion is arranged at the top of the jacking column. During use, the concave surface of the edge of a cornea is placed on the supporting table of the supporting seat upwards, then the supporting seat is sleeved with the pressing piece, the edge of the cornea is pressed by the cornea pressing edge, then the pressing piece and the supporting seat are fixed through the fastening piece, and then the jacking column moves upwards from the interior of the sleeve of the supporting seat to jack the cornea and then fix the cornea. At the moment, the inward concave surface of the cornea in the original state is changed into an upward-protruding arc surface, so that a doctor can perform layered operation conveniently, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a corneal laminating fixator. Background Art

[0002] Before transplantation, the donor cornea needs to be laminated first. During the existing lamination process, it is usually necessary to fix the cornea. When fixing the cornea, it is usually placed in a concave circular arc-shaped groove, and then the edge of the cornea is fixed, and then the lamination operation is carried out. When laminating in this way, the cornea is in a concave state, which is not convenient for doctors to operate. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem that the existing corneal laminating fixator is not convenient to use.

[0004] The technical solution adopted to solve the technical problems proposed by the present invention is as follows: The corneal laminating fixator of the present invention includes a support base, a pressing member, a fastening member, and a top column. The support base is in a sleeve-like structure, and a support platform for the edge of the donor cornea to overlap is provided at the top of the support base. The pressing member is sleeved on the outer periphery of the support base. A corneal edge pressing portion for pressing the edge of the cornea is provided on the pressing member. A central hole for the corneal endothelial cell layer to be exposed is provided in the middle of the pressing member. The fastening member is used to fix the pressing member to the support base. The top column is movably connected to the inner wall of the sleeve of the support base, and an arc-shaped protrusion for jacking up the convex portion of the cornea is provided at the top of the top column.

[0005] The technical solutions for further limiting the present invention include: The top column is threadedly connected to the inner wall of the sleeve of the support base. A base is provided at the bottom of the top column, and the support base is located above the base.

[0006] The base is circular, and anti-slip lines are provided on the outer periphery of the base.

[0007] An external threaded column is provided on the support base, and the external threaded column is located below the pressing member. An internal threaded hole matching the external threaded column is provided on the fastening member. The fastening member is connected to the support base through the external threaded column. An outwardly convex mounting boss is provided at the bottom of the pressing member, and the outer diameter of the mounting boss is smaller than the outer diameter of the external threaded column. A fastening pressing edge for pressing the mounting boss is provided on the fastening member.

[0008] A vertical positioning platform is provided on the support base, and a positioning groove matching the positioning platform is provided on the mounting boss.

[0009] The fastening member has a circular shape, and anti-slip lines are provided on the outer periphery of the fastening member.

[0010] Through the above technical solution, the beneficial effects of the present invention are as follows: The corneal layer fixing device of the present invention includes a support base, a pressing member, a fastening member and a top column. When in use, the concave surface of the corneal edge is placed upward on the support table of the support base, and then the pressing member is sleeved outside the support base. The corneal pressing edge presses the edge of the cornea. Then, the fastening member fixes the pressing member and the support base. Then, the top column is moved upward from the sleeve of the support base to lift and fix the cornea. At this time, the originally concave inner surface of the cornea becomes an upward convex arc surface, which is convenient for doctors to perform layer separation operations and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. is a schematic structural diagram of a separation and gas injection part of a corneal layer fixing device of the present invention being snake-headed.

[0012] Figure 2 FIG. is a schematic structural diagram of a side view structure of a corneal layer fixing device of the present invention.

[0013] Figure 3 FIG. is a schematic structural diagram of a separation and gas injection part of a corneal layer fixing device of the present invention being oval. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following further describes the structure of the present invention with reference to the accompanying drawings.

[0015] Refer to Figures 1 to 3 , the corneal layer fixing device of the present invention includes It includes a support base 1, a pressing member 2, a fastener 3 and a top column 4. The support base 1 is in a sleeve-like structure. At the top of the support base 1, there is a support platform 11 for the edge of the donor cornea to lap. When the cornea is placed, the concave surface of the cornea faces upward, and the edge of the cornea laps on the support platform. The pressing member 2 is sleeved on the outer periphery of the support base. On the pressing member 2, there is a corneal edge press 21 for pressing the edge of the cornea. When the pressing member is sleeved on the outer periphery of the support base, the corneal edge press on the pressing member presses the edge of the cornea. In the middle of the pressing member 2, there is a central hole 22 for the corneal endothelial cell layer to be exposed. The fastener 3 is used to fix the pressing member to the support base. In this embodiment, on the support base 1, there is an external threaded column 12, and the external threaded column is located below the pressing member. In the fastener 3, there is an internal threaded hole that mates with the external threaded column, and the fastener is connected to the support base through the external threaded column. At the bottom of the pressing member 2, there is an outwardly protruding mounting boss 23, and the outer diameter of the mounting boss is smaller than the outer diameter of the external threaded column. On the fastener 3, there is a fastening press edge 31 for pressing the mounting boss 23. When installing the fastener, the fastener is sleeved on the external threaded column from top to bottom and rotated so that the fastener is screwed onto the external threaded column until the fastening press edge on the fastener presses the mounting boss on the pressing member. In this embodiment, on the support base 1, there is a vertical positioning platform 13, and on the mounting boss 23, there is a positioning groove 24 that mates with the positioning platform 13. When the pressing member is sleeved on the support base, the positioning platform is stuck in the positioning groove, thereby preventing the fastener from driving the pressing member to rotate during the installation and rotation process, resulting in damage to the cornea. In this embodiment, the outer shape of the fastener 3 is circular, and on the outer periphery of the fastener, there are fastener anti-slip threads 32. Specifically in implementation, the outer periphery of the fastener can also be polygonal or irregular-shaped.

[0016] The top column 4 is movably connected to the inner wall of the sleeve of the support base 1. At the top of the top column 4, there is an arc protrusion 41 for jacking up the convex part of the cornea. In this embodiment, the top column 4 is threadedly connected to the inner wall of the sleeve of the support base. At the bottom of the top column 4, there is a base 42, and the support base is located above the base. When the cornea is fixed, the base can be rotated to adjust the top column to move upward, and the arc protrusion at the top of the top column jacks up the bottom of the cornea. At this time, the original concave surface of the cornea becomes an upwardly convex arc surface, thus facilitating the doctor to perform the layering operation and being convenient to use. In this embodiment, the base 42 is circular, and on the outer periphery of the base, there are base anti-slip threads 421. Specifically in implementation, the base can also be polygonal or irregular-shaped.

[0017] When the corneal layer fixing device of the present invention is used, the concave surface of the corneal edge is placed upward on the support platform of the support base, then the pressing member is sleeved outside the support base, the corneal edge press presses the edge of the cornea, then the fastener fixes the pressing member to the support base, and then the top column is moved upward from the sleeve of the support base to jack up and fix the cornea. At this time, the original concave surface of the cornea becomes an upwardly convex arc surface, thus facilitating the doctor to perform the layering operation and being convenient to use.

[0018] Although the specific embodiments of the present invention have been described in detail in conjunction with the accompanying drawings, it should not be construed as a limitation on the protection scope of the present invention. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative efforts still fall within the protection scope of the present invention.

Claims

1. A corneal lamination fixator, characterized in that: The described corneal laminar fixator includes a support base, a pressing member, a fastening member, and a top post. The support base has a sleeve-like structure, and a support platform for the edge of the donor cornea to lap over is provided at the top of the support base. The pressing member is sleeved on the outer periphery of the support base. A corneal edge presser for pressing the edge of the cornea is provided on the pressing member. A central hole for the corneal endothelial cell layer to be exposed is provided in the middle of the pressing member. The fastening member is used to fix the pressing member to the support base. The top post is movably connected to the inner wall of the sleeve of the support base, and an arc protrusion for jacking up the convex part of the cornea is provided at the top of the top post.

2. The corneal lamination fixator according to claim 1, characterized in that: The top post is threadedly connected to the inner wall of the sleeve of the support base. A base is provided at the bottom of the top post, and the support base is located above the base.

3. The corneal laminar fixator according to claim 2, characterized in that: The base is circular, and anti-slip lines are provided on the outer periphery of the base.

4. The corneal layer fixator according to claim 1, characterized in that: An external threaded post is provided on the support base, and the external threaded post is located below the pressing member. An internal threaded hole matching the external threaded post is provided on the fastening member. The fastening member is connected to the support base through the external threaded post. An outwardly convex mounting boss is provided at the bottom of the pressing member, and the outer diameter of the mounting boss is smaller than the outer diameter of the external threaded post. A fastening presser for pressing the mounting boss is provided on the fastening member.

5. The corneal lamination fixator according to claim 4, characterized in that: A vertical positioning platform is provided on the support base, and a positioning groove matching the positioning platform is provided on the mounting boss.

6. The corneal lamination fixator according to claim 4, characterized in that: The fastening member has a circular shape, and anti-slip lines are provided on the outer periphery of the fastening member.

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