Device implanted into corneal endothelium

Abstract

The utility model relates to a device for implanting corneal endothelium. The device comprises an injector, an implanting box and a spine section, an endothelial implant is placed in the implantation box; the spine section is fixedly connected to one side of the implantation box and enables the implantation box to enter an eye anterior chamber to-be-implanted area through puncture; the injector is located on one side of the exterior of the implantation box, and the injector is communicated with the interior of the implantation box so as to inject gas into the implantation box; and the implantation box is provided with an anti-curl structure which is used for flattening the endothelial implant and implanting the endothelial implant into the to-be-implanted area of the anterior chamber of the eye after the injector injects gas. The endothelial implant flattening device has the beneficial effects that the endothelial implant does not need to be flattened by an instrument after being implanted, so that the harm to a patient caused by the flattening operation of the endothelial implant is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a device for implantation into the corneal endothelium. Background Technology

[0002] Corneal endothelial transplantation is a surgical procedure used to treat severe corneal endothelial diseases, such as corneal endothelial decompensation. This procedure involves transplanting a healthy corneal endothelial graft to cover the diseased endothelial surface, thereby improving the patient's vision.

[0003] After the Descemet's membrane and endothelium of a corneal endothelial graft are completely freed from the corneal stroma, they tend to curl due to surface tension. Currently, the graft is inserted into the anterior chamber of the eye in a curled state, and then the curled graft is flattened using instruments. Flattening a curled endothelial graft using instruments has the following drawbacks:

[0004] 1. The endothelial cells of the graft are easily damaged during the process of flattening the graft using instruments;

[0005] 2. The long operation time can cause surgical-induced damage to the eye, aggravate the inflammatory response, and increase the potential risk of infection;

[0006] 3. The graft is thin and small, and there are requirements for the front and back sides when it is implanted into the anterior chamber of the eye. If the curled graft is flattened, the graft may flip over, causing the front and back sides of the graft to be reversed, resulting in surgical failure. Utility Model Content

[0007] In summary, in order to overcome the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a device for implantation into the corneal endothelium.

[0008] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A device for implanting corneal endothelium includes a syringe, an implantation box, and a spiking segment; an endothelial graft is placed inside the implantation box; the spiking segment is fixedly connected to one side of the implantation box and the implantation box is inserted into the anterior chamber of the eye to be implanted through puncture; the syringe is located on the outside of the implantation box and is connected to the inside of the implantation box to inject gas into the implantation box; the implantation box is provided with an anti-rolling structure that flattens the endothelial graft and implants it into the anterior chamber of the eye to be implanted after the gas is injected by the syringe.

[0009] The beneficial effect of this invention is that after the endothelial graft is implanted, it is not necessary to flatten it with instruments, thus avoiding the harm to the patient caused by the endothelial graft flattening operation.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the anti-curling structure includes a partition and an implantation hole; the partition is fixed inside the implantation box and divides the inside of the implantation box into upper and lower cavities, and air holes are provided on the partition; the implantation hole matches the shape and size of the endothelial graft and is located at the top of the implantation box; the syringe communicates with the lower cavity, and the endothelial graft is placed in the upper cavity and located on the partition.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that it enables the endothelial graft to be flattened and implanted into the anterior chamber of the eye using gas.

[0013] Furthermore, the side of the implant box is provided with a cover plate that can be opened and closed at the position corresponding to the upper cavity, so as to open or close the upper cavity.

[0014] The beneficial effect of adopting the above-mentioned further scheme is that an endothelial graft is inserted into the upper cavity.

[0015] Furthermore, the bottom side of the implantation box is provided with an air inlet that communicates with the lower cavity, and the syringe outlet is detachably connected to the air inlet.

[0016] The advantage of adopting the above-mentioned further solution is that it facilitates the injection of gas by the syringe.

[0017] Furthermore, the syringe is filled with C3F8 gas.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that the expansion property of C3F8 gas is used to flatten the endothelial graft, resulting in a better flattening effect. Attached Figure Description

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is an enlarged schematic diagram of gas being injected into the implantation box;

[0021] Figure 3 An enlarged schematic diagram showing how gas is used to flatten the endothelial graft and implant it into the anterior chamber of the eye;

[0022] Figure 4 An enlarged diagram showing the baffle being opened when the implant box is inserted;

[0023] The hollow arrow indicates gas or an open block.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Syringe, 2. Implant box, 3. Spike segment, 4. Endothelial graft, 5. Septum, 6. Implantation hole, 7. Air hole, 8. Cover plate. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] like Figure 1 As shown, a device for implanting corneal endothelium is characterized by comprising a syringe 1, an implantation box 2, and a spiky segment 3. An endothelial graft 4 is placed inside the implantation box 2. The spiky segment 3 is fixedly connected to one side of the implantation box 2 and, through puncture, allows the implantation box 2 to enter the area to be implanted in the anterior chamber of the eye. The syringe 1 is located on the outside of the implantation box 2 and communicates with the interior of the implantation box 2 to inject gas into it. The syringe 1 is filled with C3F8 gas. The implantation box 2 is provided with an anti-rolling structure that allows the endothelial graft 4 to flatten and be implanted into the area to be implanted in the anterior chamber of the eye after the gas is injected by the syringe 1.

[0028] like Figure 2 and 3 As shown, the anti-curling structure includes a partition 5 and an implantation hole 6. The partition 5 is fixed inside the implantation box 2 and divides the interior of the implantation box 2 into upper and lower cavities. An air hole 7 is provided on the partition 5. The implantation hole 6 matches the shape and size of the endothelial graft 4 and is located at the top of the implantation box 2. The syringe 1 communicates with the lower cavity, and the endothelial graft 4 is placed in the upper cavity and located on the partition 5. An air inlet is provided on one side of the bottom of the implantation box 2, communicating with the lower cavity. The outlet of the syringe 1 is detachably connected to the air inlet.

[0029] like Figure 4 As shown, the side of the implant box 2 is provided with a cover plate 8 that can be opened and closed at the position corresponding to the upper cavity, so as to open or close the upper cavity.

[0030] During corneal endothelial transplantation, syringe 1 is first removed from the air inlet of implantation box 2, and the piston rod is pulled to draw a certain amount of C3F8 gas into syringe 1. Syringe 1 is then reinserted into the air inlet of implantation box 2. The cover plate 8 is rotated to open the upper cavity of implantation box 2. The endothelial graft 4, coated with a protective agent (medical sodium hyaluronate to protect the endothelial graft from damage), is then placed into the upper cavity of implantation box 2, and cover plate 8 is closed. The protective agent has a certain adhesive force, allowing the endothelial graft 4 to flatten and prevent curling. Next, the tip 3 is used to puncture the anterior chamber of the patient's eye, allowing implantation box 2 to reach the area to be transplanted. Then, the piston rod of syringe 1 is slowly pushed, injecting the C3F8 gas inside into the lower cavity of implantation box 2. Due to the expansion and retention properties of C3F8 gas, it expands and diffuses upwards through the pores 7 in the lower cavity of implantation box 2, lifting the endothelial graft 4 in the upper cavity. Because the central portion of the endothelial graft 4 is subjected to the expansion force of the C3F8 gas, while the peripheral portion is temporarily unaffected (the peripheral portion rests on the septum 5), the central portion of the endothelial graft 4 will first bulge upwards and unfold, then be implanted into the anterior chamber of the eye through the implantation hole 6. As the gas continues to expand, the peripheral portion of the endothelial graft 4 will then be implanted into the anterior chamber of the eye through the implantation hole 6. At this point, the endothelial graft 4 is implanted into the area in a flattened state. After implantation, the endothelial graft 4 does not need to be flattened using instruments, avoiding the harm to the patient caused by flattening the endothelial graft 4.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for implantation into the corneal endothelium, characterized in that, The device includes a syringe (1), an implantation box (2), and a spike (3); an endothelial graft (4) is placed inside the implantation box (2); the spike (3) is fixedly connected to one side of the implantation box (2) and the implantation box (2) is inserted into the anterior chamber of the eye to be implanted through puncture; the syringe (1) is located on the outside of the implantation box (2) and the syringe (1) communicates with the inside of the implantation box (2) to inject gas into the implantation box (2); the implantation box (2) is provided with an anti-rolling structure that flattens the endothelial graft (4) and implants it into the anterior chamber of the eye to be implanted after the gas is injected by the syringe (1).

2. The device for implanting corneal endothelium according to claim 1, characterized in that, The anti-curling structure includes a partition (5) and an implantation hole (6); the partition (5) is fixed inside the implantation box (2) and divides the inside of the implantation box (2) into an upper cavity and a lower cavity, and an air hole (7) is provided on the partition (5); the implantation hole (6) matches the shape and size of the endothelial graft (4) and is located at the top of the implantation box (2); the syringe (1) is connected to the lower cavity, and the endothelial graft (4) is placed in the upper cavity and located on the partition (5).

3. The device for implanting corneal endothelium according to claim 2, characterized in that, The implant box (2) has a cover plate (8) on its side that can be opened and closed at the position corresponding to the upper cavity, so as to open or close the upper cavity.

4. The device for implanting corneal endothelium according to claim 2, characterized in that, The implant box (2) has an air inlet end on one side bottom that connects to the lower cavity, and the syringe (1) outlet is detachably plugged into the air inlet end.

5. The device for implanting corneal endothelium according to any one of claims 1 to 4, characterized in that, The syringe (1) is filled with C3F8 gas.

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