Donor cornea fixing device

Abstract

The utility model discloses a donor cornea fixing device which comprises a fixing cylinder and a top cover which are connected with each other, a cornea support is arranged in the fixing cylinder, a positioning groove matched with a donor cornea is formed in the cornea support, and a supporting platform is arranged on the peripheral side of the positioning groove; a pressing fixing frame is rotationally arranged on the inner side of the top cover and used for pressing the edge of the cornea of the donor to the supporting platform in an abutting mode. According to the fixing device for clinical examination of the cornea of the donor in the preserving fluid medium, the cornea of the donor is effectively fixed through cooperation of the fixing barrel, the top cover, the cornea support, the pressing fixing frame and other structures, the conditions of the front surface and the rear surface of the cornea can be conveniently examined and evaluated through a slit lamp before an operation, and the operation efficiency is improved. And floating, rolling and damage can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cornea preservation technical field, specifically relates to a donor cornea fixing device. BACKGROUND

[0002] Corneal transplantation surgery is due to the functional or structural irreversible damage of cornea leads to vision decline, so as to accept the treatment method of allograft corneal transplantation, the corneal graft used in corneal transplantation surgery is generally human donated cornea, xenogeneic active cornea or xenogeneic acellular cornea.

[0003] Human donated cornea and xenogeneic active cornea exist living cells (corneal endothelial cells), and living cells are the decisive factor for exerting physiological functions.The physiological structure of cornea is divided into 5 layers, from outside to inside, it is epithelial cell layer, anterior elastic layer, stroma layer, posterior elastic layer and endothelial cell layer.Endothelial cells are regular hexahedron, and its physiological function is to pump the moisture of corneal stroma layer to anterior chamber, so as to maintain the transparency of cornea.Before corneal transplantation surgery, the quality of the cornea to be transplanted needs to be evaluated.Before transplantation, the cornea is generally stored in a cornea preservation bottle, and the number of corneal endothelial cells of the donor and the thickness of the cornea are checked by a slit lamp to evaluate whether it meets the standard of cornea donor.

[0004] In the prior art, since there is no fixing structure in the cornea preservation bottle, the cornea is directly floated in the bottle, when the cornea preservation bottle shakes, the cornea will roll, and the cornea is easy to be damaged.In addition, since the cornea cannot be fixed in the cornea preservation bottle, it is not convenient to use a slit lamp to check and evaluate the front and back surfaces of the cornea before operation, and only the fresh degree of the donor cornea in the preservation solution can be observed by naked eye, which affects the accuracy of the evaluation of the quality of the cornea. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a donor cornea fixing device, which solves the above problems in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a donor cornea fixing device, which comprises a fixing cylinder and a top cover connected with each other, a cornea support is arranged in the fixing cylinder, a positioning groove matched with the donor cornea is arranged on the cornea support, and a supporting platform is arranged on the side of the positioning groove; a pressing frame is rotatably arranged on the inner side of the top cover, and the pressing frame is used for pressing the edge of the donor cornea on the supporting platform.

[0007] The fixing device is used in specific use, the donor cornea is placed in the positioning groove of the corneal support, then the top cover is covered, the edge of the donor cornea is pressed on the support platform through the pressing fixing frame, after the donor cornea is fixed, the situation of the front and back surfaces of the cornea can be conveniently evaluated by using a slit lamp.

[0008] As an optional implementation of the above technical solution, the pressing fixing frame comprises a support frame and a plurality of pressing legs, the support frame is rotatably connected with the top cover, one end of the pressing leg is connected with the support frame, and the other end of the pressing leg is provided with a flexible pad.

[0009] As an optional implementation of the above technical solution, the support frame comprises a vertical support rod and a horizontal support rod, one end of the vertical support rod is rotatably connected with the top cover, the other end of the vertical support rod is connected with the horizontal support rod, and the pressing leg is arranged on the horizontal support rod.

[0010] As an optional implementation of the above technical solution, both ends of the horizontal support rod are provided with the pressing leg.

[0011] As an optional implementation of the above technical solution, the flexible pad is a silica gel pad.

[0012] As an optional implementation of the above technical solution, the top of the fixing cylinder is provided with a connecting portion, the bottom of the top cover is provided with a connecting groove matched with the connecting portion, and a sealing ring is arranged in the connecting groove.

[0013] As an optional implementation of the above technical solution, the connecting portion is provided with an external thread, and the inner wall of the connecting groove is provided with an internal thread matched with the external thread.

[0014] As an optional implementation of the above technical solution, the inside of the fixing cylinder is filled with a preservation liquid.

[0015] As an optional implementation of the above technical solution, the corneal support and the fixing cylinder are integrally formed.

[0016] As an optional implementation of the above technical solution, the fixing cylinder and the corneal support are made of transparent materials.

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

[0018] The utility model provides a kind of fixing device for donor cornea to carry out clinical examination in preservative medium, cooperate by fixed cylinder, top cover, corneal support and the structure such as lower pressing fixture, the effective fixation of donor cornea is realized, it is convenient to adopt slit lamp examination to assess the situation of corneal front and back surface before operation, and can prevent floating roll damage.The fixing device is used in specific, donor cornea is placed in the positioning groove of corneal support, then cover top cover, the edge of donor cornea is pressed on support platform by lower pressing fixture, after donor cornea is fixed, it is convenient to adopt slit lamp examination to assess the situation of corneal front and back surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a kind of structure schematic view of donor cornea fixing device in the utility model one implementation mode;

[0020] Figure 2 It is the exploded schematic view of donor cornea fixing device in the utility model one implementation mode.

[0021] In the drawing: 1-fixed cylinder;2-top cover;3-corneal support;4-positioning groove;5-support platform;6-lower pressing fixture;7-pressing foot;8-flexible pad;9-vertical support rod;10-horizontal support rod;11-connection;12-connection slot;13-sealing ring;14-donor cornea. DETAILED DESCRIPTION

[0022] As Figure 1 And Figure 2 The utility model provides a kind of donor cornea fixing device, including the fixed cylinder 1 and top cover 2 of interconnection, the inside of fixed cylinder 1 is equipped with corneal support 3.Fixed cylinder 1 and top cover 2 can be designed as the structure of bottle body and bottle cap, fixed cylinder 1 and top cover 2 are detachably connected, fixed cylinder 1 is equipped with the containing groove of top opening, and corneal support 3 is fixed at the bottom of containing groove, and containing groove is filled with preservative to save donor cornea 14.The positioning groove 4 of being adapted to donor cornea 14 is opened on the corneal support 3, the support platform 5 is equipped on the circumferential side of positioning groove 4, and the arc of positioning groove 4 is matched with the arc of donor cornea 14, for some larger size donor cornea 14, then the arc of positioning groove 4 is designed larger;For some smaller size donor cornea 14, then the arc of positioning groove 4 is designed smaller.The size of donor cornea 14 is slightly larger than the size of positioning groove 4, and the edge of donor cornea 14 can extend to the outside of positioning groove 4.

[0023] The inner side of the top cover 2 is rotationally provided with a pressing fixing frame 6, which is used for pressing the edge of the donor cornea 14 against the support platform 5. The top cover 2 is installed on the fixing cylinder 1, the pressing fixing frame 6 extends into the containing groove, the bottom of the pressing fixing frame 6 is in contact with the edge of the donor cornea 14, and the edge of the donor cornea 14 is pressed against the support platform 5, so that the donor cornea 14 is fixed. Since the pressing fixing frame 6 is rotationally matched with the top cover 2, when the cover body rotates relative to the fixing cylinder 1, the pressing fixing frame 6 will not rotate with the top cover 2, so as to avoid damage to the donor cornea 14 caused by the pressing fixing frame 6.

[0024] The utility model provides a kind of fixing device for donor cornea carries out clinical examination in preservative medium medium, and the effective fixation of donor cornea 14 is realized by the cooperation of fixing cylinder 1, top cover 2, corneal support 3 and pressing fixing frame 6 etc.

[0025] Specifically, the pressing fixing frame 6 includes a support frame and a plurality of pressing legs 7, the support frame is rotationally connected with the top cover 2, one end of the pressing leg 7 is connected with the support frame, and the other end of the pressing leg 7 is provided with a flexible pad 8. Preferably, the flexible pad 8 is a silica gel pad. The number of pressing legs 7 can be set according to actual needs, and the utility model is not limited thereto. With this design structure, when the pressing leg 7 is pressed down, the flexible pad 8 at the bottom of the pressing leg 7 is in contact with the donor cornea 14, which can greatly reduce the damage to the donor cornea 14.

[0026] The support frame comprises a vertical support rod 9 and a horizontal support rod 10, one end of the vertical support rod 9 is rotationally connected with the top cover 2, the other end of the vertical support rod 9 is connected with the horizontal support rod 10, and the pressing foot 7 is arranged on the horizontal support rod 10. The vertical support rod 9 and the horizontal support rod 10 are integrally formed, and the vertical support rod 9 and the horizontal support rod 10 are T-shaped in structure, the top end of the vertical support rod 9 is rotationally connected with the top cover 2, the top of the pressing foot 7 is connected with the horizontal support rod 10, and a plurality of pressing feet 7 can be arranged on the horizontal support rod 10 as required. Preferably, two pressing feet 7 are arranged on the horizontal support rod 10, and the two pressing feet 7 are arranged at two ends of the horizontal support rod 10 respectively. When the top cover 2 is installed on the fixing cylinder 1, the two pressing feet 7 at the bottom of the horizontal support rod 10 extend into the containing groove, the flexible pad 8 at the bottom of the pressing foot 7 is in contact with the edge of the donor cornea 14, and the edge of the donor cornea 14 is pressed on the support platform 5, so that the donor cornea 14 is effectively fixed.

[0027] In a specific embodiment, the top of the fixing cylinder 1 is provided with a connecting portion 11, the bottom of the top cover 2 is provided with a connecting groove 12 matched with the connecting portion 11, and the connecting groove 12 is provided with a sealing ring 13. The connecting portion 11 of the fixing cylinder 1 and the connecting groove 12 of the top cover 2 can adopt various matching structures, such as clamping, threaded connection, etc. Preferably, the connecting portion 11 is provided with external threads, and the inner wall of the connecting groove 12 is provided with internal threads matched with the external threads. The connecting portion 11 is annular in structure, and the connecting groove 12 is also annular in design. The outer wall of the connecting portion 11 is provided with external threads, and the inner wall of the connecting groove 12 is provided with internal threads. When the top cover 2 is installed on the fixing cylinder 1, the donor cornea 14 can be sealed by tightening the top cover 2, and the sealing ring 13 in the connecting groove 12 can improve the sealing effect between the fixing cylinder 1 and the top cover 2.

[0028] In a specific embodiment, the corneal support 3 and the fixing cylinder 1 are integrally formed. The fixing cylinder 1 and the corneal support 3 are made of transparent materials, such as acrylic materials, glass materials, etc. In this way, the condition of the front and back surfaces of the cornea can be conveniently evaluated by using a slit lamp.

[0029] In the description of the utility model, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, can be fixed connection, detachable connection, or integrated; can be mechanical connection or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the communication between two elements or the interaction relationship of two elements, for those skilled in the art, the specific meaning of the above terms in the utility model can be understood. In addition, the specific features, structures and the like described in the embodiments are included in at least one embodiment, and the features of different embodiments can be combined by those skilled in the art without mutual contradiction. The protection scope of the utility model is not limited to the above specific embodiments, according to the basic technical concept of the utility model, the embodiments that can be thought of by those skilled in the art without creative labor all belong to the protection scope of the utility model.

Claims

1. A donor corneal fixation device, comprising: The utility model relates to a corneal donor fixing device, including mutually connected fixed cylinder (1) and top cap (2), the inside of fixed cylinder (1) is equipped with corneal support (3), is equipped with with the positioning recess (4) of adapting with donor cornea (14) on corneal support (3), the lateral side of positioning recess (4) is equipped with support platform (5), the inside of top cap (2) is rotatably equipped with press down fixed frame (6), press down fixed frame (6) is used for the edge of donor cornea (14) is pressed on support platform (5).

2. The donor corneal fixation device of claim 1, wherein, The press down fixed frame (6) includes a support frame and a plurality of pressing legs (7), the support frame is rotatably connected with the top cap (2), one end of the pressing leg (7) is connected with the support frame, and the other end of the pressing leg (7) is provided with a flexible pad (8).

3. The donor corneal securing device of claim 2, wherein, The support frame includes a vertical support rod (9) and a horizontal support rod (10), one end of the vertical support rod (9) is rotatably connected with the top cap (2), the other end of the vertical support rod (9) is connected with the horizontal support rod (10), and the pressing leg (7) is arranged on the horizontal support rod (10).

4. The donor corneal securing device of claim 3, wherein, Both ends of the horizontal support rod (10) are provided with the pressing leg (7).

5. The donor corneal securing device of claim 2, wherein, The flexible pad (8) is a silica gel pad.

6. The donor corneal securing device of claim 1, wherein, The top of the fixed cylinder (1) is provided with a connecting portion (11), the bottom of the top cap (2) is provided with a connecting groove (12) matched with the connecting portion (11), and the connecting groove (12) is provided with a sealing ring (13) inside.

7. The donor corneal securing device of claim 6, wherein, The connecting portion (11) is provided with external threads, and the inner wall of the connecting groove (12) is provided with internal threads matched with the external threads.

8. The donor corneal fixation device of claim 1, wherein, The inside of the fixed cylinder (1) is filled with a preservation solution.

9. The donor corneal securing device of claim 1, wherein, The corneal support (3) and the fixed cylinder (1) are integrally formed.

10. The donor corneal fixation device of claim 1, wherein, The fixed cylinder (1) and the corneal support (3) are made of transparent materials.

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