Glaucoma drainage support

Abstract

The utility model relates to the technical field of medical instruments, and discloses a glaucoma drainage support which comprises a lower cover, an upper cover is fixedly connected to the left side of the lower cover, a push block is slidably connected to the upper middle portion of the side, adjacent to the upper cover, of the lower cover, and a push wire fixing rod is fixedly connected to the bottom of the push block. The bottom of the push wire fixing rod is fixedly connected with a needle head rod, a needle head is arranged in the needle head rod, the bottom end of the needle head penetrates through the needle head rod, the push wire is fixedly connected into the push wire fixing rod, the bottom end of the push wire sequentially penetrates through the needle head rod and the needle head, and the bottom end of the push wire is fixedly connected with a support. The anterior chamber and the schlemm test tube can be communicated through the support, the support can support the schlemm test tube within the 90-degree range, the drainage and pressure reduction effect is higher, the support can be implanted only by partially entering the anterior chamber, puncturing the schlemm test tube and rotating the rolling wheels in the implanting process, the implanting process is simpler, the operation time is shorter, and trauma is smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a glaucoma drainage stent. Background Art

[0002] A glaucoma drainage stent is a medical device used to treat glaucoma. Typically made of absorbable material, it helps drain fluid from the eye, thereby reducing intraocular pressure. Implanted inside the eye, the stent helps maintain intraocular pressure within a normal range, alleviating symptoms and risks for glaucoma patients. Glaucoma drainage stents are typically implanted during surgery by an ophthalmologist, under the guidance and operation of a specialized physician.

[0003] Currently, the main method for treating glaucoma is through surgery, and internal drainage is the most commonly used method for treating glaucoma. The traditional surgical method is to surgically cut the trabecular meshwork and slime tube to connect the anterior chamber and slime tube. Some surgical methods will use a microcatheter to dredge the lower slime tube, so that the collapsed slime tube can be reopened. However, the traditional surgical method still has problems such as complex surgical operation, large surgical trauma, and long operation time.

[0004] Currently, there is a glaucoma stent that is shaped like a thumbtack. It is inserted into the wall of the slime tube to connect the slime tube and the anterior chamber. However, since the inner hole of this type of stent is too small, it is easily blocked and there is no support for the collapsed slime tube. Therefore, the effect of lowering intraocular pressure is not ideal, and multiple stents need to be implanted to achieve the desired effect. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art that the inner hole of such stent is too small, easily clogged, and there is no support for the collapsed slime tube, so the intraocular pressure lowering effect is not ideal and multiple stents need to be implanted to achieve the desired effect. A glaucoma drainage stent is proposed to solve the shortcomings of the prior art that the inner hole of such stent is too small, easily clogged, and there is no support for the collapsed slime tube, so the intraocular pressure lowering effect is not ideal and multiple stents need to be implanted to achieve the desired effect.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a glaucoma drainage bracket, comprising a lower cover, the left side of the lower cover is fixedly connected to the upper cover, the middle and upper parts of the adjacent sides of the lower cover and the upper cover are slidably connected with a push block, the bottom of the push block is fixedly connected to a push wire fixing rod, the bottom of the push wire fixing rod is fixedly connected to a needle rod, a needle is provided inside the needle rod, the bottom end of the needle passes through the needle rod, the inside of the push wire fixing rod is fixedly connected with a push wire, the bottom end of the push wire passes through the needle rod and the needle in turn, the bottom end of the push wire is fixedly connected to the bracket, the middle part of the push block is rotatably connected to a roller, one side of the roller passes through the upper cover, and the middle part of the upper cover is slidably connected to a safety pin.

[0007] As a further description of the above technical solution:

[0008] The front end of the needle is provided with an arc-shaped curved structure.

[0009] As a further description of the above technical solution:

[0010] The front end of the push wire is provided with a hook structure.

[0011] As a further description of the above technical solution:

[0012] The bracket and push wire are both made of nickel-titanium alloy. The bracket is a semi-C-shaped structure. The bending range of the bracket is ninety degrees. Multiple ridge structures are provided on the bracket. The inner wall of the ridge structure is provided with multiple holes. The end of the bracket is provided with a groove.

[0013] As a further description of the above technical solution:

[0014] The wire pushing fixing rod is placed between the upper cover and the lower cover.

[0015] The utility model has the following beneficial effects:

[0016] In the utility model, the anterior chamber and the slime tube can be connected through the bracket, and the bracket can support the slime tube within a range of 90 degrees, so the drainage and blood pressure reduction effect is higher. During the implantation process, only the needle part needs to enter the anterior chamber and pierce the slime tube. The roller can be rotated to implant the bracket. The implantation process is simpler, the operation time is shorter, and the trauma is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a glaucoma drainage stent proposed by the utility model;

[0018] Figure 2 This is a partial structural cross-sectional view of a glaucoma drainage stent proposed by the utility model;

[0019] Figure 3 This is a front view structural cross-sectional view of a glaucoma drainage stent proposed by the present invention;

[0020] Figure 4 This is an enlarged view of the structure at point A of a glaucoma drainage stent proposed in the present invention;

[0021] Figure 5 This is a front view partial structure diagram of a glaucoma drainage stent proposed by the present invention;

[0022] Figure 6 This is a schematic diagram of the three-dimensional partial structure of a glaucoma drainage stent proposed by the utility model.

[0023] Legend:

[0024] 1. Needle rod; 2. Push thread fixing rod; 3. Push block; 4. Upper cover; 5. Safety pin; 6. Roller; 7. Lower cover; 8. Bracket; 9. Push thread; 10. Needle. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figure 1-6 The utility model provides an embodiment: a glaucoma drainage stent, including a lower cover 7, the left side of the lower cover 7 is fixedly connected to the upper cover 4, the lower cover 7 and the upper cover 4 are slidably connected to the middle and upper parts of the adjacent sides of the push block 3, the bottom of the push block 3 is fixedly connected to the push wire fixing rod 2, the bottom of the push wire fixing rod 2 is fixedly connected to the needle rod 1, the needle rod 1 is provided with a needle 10, the bottom end of the needle 10 passes through the needle rod 1, the push wire fixing rod 2 is fixedly connected to the push wire 9, the bottom end of the push wire 9 passes through the needle rod 1 and the needle 10 in sequence, the bottom end of the push wire 9 A bracket 8 is fixedly connected, and the middle part of the push block 3 is rotatably connected to a roller 6. One side of the roller 6 passes through the upper cover 4, and the middle part of the upper cover 4 is slidably connected to a safety pin 5. The front section of the needle 10 is provided with an arc-shaped bending structure; the front end of the push wire 9 is provided with a hook structure; the bracket 8 and the push wire 9 are both made of nickel-titanium alloy, the bracket 8 is a semi-C-shaped structure, the bending range of the bracket 8 is 90 degrees, a plurality of ridge structures are provided on the bracket 8, the inner wall of the ridge structure is provided with a plurality of holes, and the end of the bracket 8 is provided with a groove; the push wire fixing rod 2 is placed between the upper cover 4 and the lower cover 7;

[0027] Specifically, the push block 3 can be driven to move back and forth by rotating the roller 6. The front end of the push block 3 is provided with a push wire fixing rod 2, which rotates circumferentially around the push block 3. The push wire fixing rod 2 also moves back and forth under the drive of the push block 3. The push wire fixing rod 2 is sleeved in the hole of the needle rod 1, and the rotation of the needle rod 1 drives the push wire fixing rod 2 to rotate. The push wire fixing rod 2 can move back and forth in the hole of the needle rod 1. A push wire 9 is provided on the push wire fixing rod 2, and the push wire 9 can move back and forth under the drive of the push wire fixing rod 2. A needle 10 is provided on the needle rod 1, and the push wire 9 is located in the inner hole of the needle 10. The push wire 9 can move back and forth in the inner hole of the needle 10. The front section of the needle 10 is provided with a circular arc bend, and the head end of the push wire 9 is provided with a hook structure. The head end of the push wire 9 is the same as the needle 10 The arc of the bending direction is curved, and the tip of the push wire 9 extends from the needle 10 and then moves away from the needle 10. The hook structure of the tip of the push wire 9 is connected to the bracket 8. After the bracket 8 overlaps with the overlapping structure of the tip of the push wire 9, it is pulled and driven by the push wire 9 to bend into the inner hole of the needle 10. The safety pin 5 slides to block the push block 3 from sliding forward to limit the position. The anterior chamber and the slime tube can be connected through the bracket 8, and the bracket 8 can support the slime tube within a 90° range, which has a higher drainage and blood pressure reduction effect. During the implantation process, only the needle 10 part needs to enter the anterior chamber and pierce the slime tube. The roller 6 can be rotated to implant the bracket 8. The implantation process is simpler, the operation time is shorter, and the trauma is less. The needle rod 1, as the main body of the entire device, plays the role of support and guidance. The push wire fixing rod 2 forms a close fit with the needle rod 1 by rotating circumferentially and moving back and forth around the push block 3. This design allows the push wire fixing rod 2 to flexibly rotate and move within the hole of the needle rod 1, providing convenience for the subsequent surgical operation. The push wire 9 is a key component of the entire device. It is mounted on the push wire fixing rod 2 and moves back and forth under its drive. The front end of the push wire 9 is provided with a hook structure, which ensures that the push wire 9 is stably connected to the bracket 8. During the operation, when the push wire 9 extends from the needle 10, its head end moves away from the needle 10, and the hook structure is connected to the bracket 8. Through the rotation of the roller 6, the push wire 9 causes the bracket 8 to bend and enter the inner hole of the needle 10. During this process, the use of the safety pin 5 is to prevent misoperation before use, which may cause the bracket 8 to be accidentally pushed out. The front end of the needle 10 is provided with an arc-shaped curve. This design makes it smoother for the needle 10 to penetrate the patient's body and reduce tissue damage. At the same time, the connection method between the hook structure at the head end of the push wire 9 and the bracket 8 fully considers biocompatibility and stability, ensuring that the bracket can perform its intended function after implantation. In actual application, this device is mainly used to connect the anterior chamber and the slime tube. As a connecting bridge, the stent 8 can not only support the slime tube within a 90° range, but also achieve the effect of drainage and blood pressure reduction. Compared with traditional surgical methods, this implantation process is simpler, the operation time is shorter, and the trauma is less.The doctor only needs to partially insert the needle 10 into the anterior chamber, pierce the Slim's canal, and then implant the stent 8 by rotating the roller 6. This operation method not only reduces the doctor's workload, but also greatly improves the success rate of the operation and the patient's recovery speed.

[0028] Working principle: The push block 3 can be driven to move back and forth by rotating the roller 6. The front end of the push block 3 is provided with a push wire fixing rod 2. The push wire fixing rod 2 rotates circumferentially around the push block 3. The push wire fixing rod 2 also moves back and forth under the drive of the push block 3. The push wire fixing rod 2 is sleeved in the hole of the needle rod 1. The rotation of the needle rod 1 drives the push wire fixing rod 2 to rotate. The push wire fixing rod 2 can move back and forth in the hole of the needle rod 1. A push wire 9 is provided on the push wire fixing rod 2. The push wire 9 can move back and forth under the drive of the push wire fixing rod 2. A needle 10 is provided on the needle rod 1. The push wire 9 is located in the inner hole of the needle 10. The push wire 9 can move back and forth in the inner hole of the needle 10. The front section of the needle 10 is provided with an arc-shaped bend, and the head end of the push wire 9 is provided with a hook The structure is that the tip of the push wire 9 is bent in the same bending direction of the arc as the needle 10. After the tip of the push wire 9 extends out from the needle 10, the tip is away from the needle 10. The hook structure of the tip of the push wire 9 is connected to the bracket 8. After the bracket 8 is overlapped with the overlapping structure of the tip of the push wire 9, it is driven by the push wire 9 to bend into the inner hole of the needle 10, and the safety pin 5 slides to block the push block 3 from sliding forward to limit the position. The anterior chamber and the slime tube can be connected through the bracket 8, and the bracket can support the slime tube in a range of 90°. The drainage and blood pressure reduction effect is higher. During the implantation process, only the needle 10 part needs to enter the anterior chamber and pierce the slime canal. The bracket 8 can be implanted by rotating the roller 6. The implantation process is simpler, the operation time is shorter, and the trauma is smaller.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A glaucoma drainage stent, comprising a lower cover (7), characterized in that: The left side of the lower cover (7) is fixedly connected to the upper cover (4), and the middle upper part of the adjacent side of the lower cover (7) and the upper cover (4) is slidably connected to a push block (3), the bottom of the push block (3) is fixedly connected to a push wire fixing rod (2), the bottom of the push wire fixing rod (2) is fixedly connected to a needle rod (1), a needle (10) is provided inside the needle rod (1), the bottom end of the needle (10) passes through the needle rod (1), the inside of the push wire fixing rod (2) is fixedly connected to a push wire (9), the bottom end of the push wire (9) passes through the needle rod (1) and the needle (10) in sequence, the bottom end of the push wire (9) is fixedly connected to a bracket (8), the middle part of the push block (3) is rotatably connected to a roller (6), one side of the roller (6) passes through the upper cover (4), and the middle part of the upper cover (4) is slidably connected to a safety pin (5).

2. The glaucoma drainage stent according to claim 1, characterized in that: The front end of the needle (10) is provided with an arc-shaped curved structure.

3. The glaucoma drainage stent according to claim 1, characterized in that: The front end of the push wire (9) is provided with a hook structure.

4. The glaucoma drainage stent according to claim 1, characterized in that: The bracket (8) and the push wire (9) are both made of nickel-titanium alloy. The bracket (8) is a semi-C-shaped structure. The bending range of the bracket (8) is ninety degrees. A plurality of ridge structures are provided on the bracket (8). The inner wall of the ridge structure is provided with a plurality of holes. The end of the bracket (8) is provided with a groove.

5. The glaucoma drainage stent according to claim 1, characterized in that: The push-wire fixing rod (2) is placed between the upper cover (4) and the lower cover (7).

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