Microporous drainage device and delivery system for ophthalmic surgery

Abstract

The present invention discloses a microporous drainage device for ophthalmic surgery and a delivery system thereof. The drainage device comprises a drainage valve body, and the drainage valve body comprises a fixed portion, a first drainage portion and a second drainage portion; the first drainage portion is arranged on one side of the fixed portion, and is used to insert a capillary tube into the anterior chamber of the patient's eyeball; the second drainage portion is arranged on the other side of the fixed portion opposite to the first drainage portion, and is used to connect with the capillary tube of the patient's eyeball vein; and a microporous drainage channel is arranged on the drainage valve body. The delivery system of the microporous drainage device for ophthalmic surgery comprises a hollow hand-held rod, and an operating head and a wire drawing rod are respectively arranged at both ends of the hand-held rod. Sutures are passed through the hand-held rod, and the sutures have a closed loop portion and a wire drawing portion. The closed loop portion is embedded in the operating head, and the wire drawing portion is fixed to the wire drawing rod. The microporous drainage device for ophthalmic surgery of the present invention can solve the problem of high intraocular pressure in glaucoma, and at the same time avoid various inflammatory problems caused by the implantation of commonly used drainage valves, thereby safely and efficiently treating glaucoma.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a microporous drainage device for ophthalmic surgery and a delivery system thereof. Background Art

[0002] At present, among ophthalmic diseases, glaucoma is the second most irreversible blinding eye disease in the world, and it is also one of the main blinding eye diseases in my country. The main cause of glaucoma is the poor drainage of aqueous humor in the eye, which leads to increased intraocular pressure, and eventually leads to nerve atrophy and blindness. For primary open-angle glaucoma, the most commonly used surgery at home and abroad is glaucoma drainage valve implantation. The drainage valve is used to drain the aqueous humor, but after a period of time, bleb leakage, scarring, blockage, low intraocular pressure and bleb-related intraocular inflammation will become a nightmare for patients. In addition, the drainage valve is fixed to the drainage valve through artificial ligation of microtubes, and it is difficult to fix the vein to the drainage valve, and the operation risk of drainage valve implantation is high. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a microporous drainage device and its delivery system for ophthalmic surgery suitable for glaucoma aqueous humor drainage and decompression, which has a simple and reliable structure, is easy to operate and implant, and has significant postoperative effects.

[0004] To achieve the above-mentioned purpose, the microporous drainage device for ophthalmic surgery designed in the present invention includes a drainage valve body, wherein the drainage valve body has a fixed part, a first drainage part and a second drainage part; the first drainage part is arranged on one side of the fixed part, and is used to insert a capillary into the anterior chamber of the patient's eyeball; the second drainage part is arranged on the other side of the fixed part opposite to the first drainage part, and is used to connect with the capillary in the patient's eyeball vein; the drainage valve body is provided with a microporous drainage channel, and the microporous drainage channel sequentially passes through the first drainage part, the fixed part and the second drainage part.

[0005] Furthermore, the fixing portion is provided with a plurality of through holes for the sutures to pass through.

[0006] Furthermore, the second drainage portion is a flexible component made of flexible material.

[0007] Furthermore, the fixing portion is a plate-shaped component, and the first drainage portion and the second drainage portion are needle-shaped components.

[0008] The present invention also provides a delivery system for the above-mentioned microporous drainage device for ophthalmic surgery, comprising a hollow hand-held rod, one end of the hand-held rod is provided with an operating head for fixing the drainage valve body, the other end of the hand-held rod is provided with a pull-wire rod, surgical sutures are passed through the hand-held rod, the surgical sutures have a closed ring portion and a pull-wire portion, the closed ring portion is embedded in the operating head, and the pull-wire portion is fixedly connected to the pull-wire rod.

[0009] Furthermore, the operating head includes an annular head, an operating rod and a fixing part, one end of the operating rod is clamped with the hand-held rod, the other end of the operating rod is fixedly connected to the annular head, and the inner cavity of the operating rod and the annular head are connected; the fixing part is connected to the operating rod as a whole, and the fixing part is provided with a clamping hole for embedding the diversion valve body.

[0010] Furthermore, the surgical suture has a first end and a second end, the first end is wrapped around the body of the surgical suture to form a slipknot, thereby forming a closed loop portion; the second end passes through the operating rod and the hand-held rod to form a pull-wire portion fixedly connected to the pull-wire rod.

[0011] Furthermore, a limiting hole is provided at the connection between the operating rod and the annular head, and the limiting hole is used to limit the slipknot so that only the pulling part of the surgical suture can pass through.

[0012] Furthermore, an annular groove for accommodating a closed annular portion of a surgical suture is provided inside the annular head.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] First, the microporous drainage device for ophthalmic surgery of the present invention is designed with a drainage channel, which runs through the first drainage part, the fixing part and the second drainage part of the drainage valve body. The aqueous humor in the anterior chamber angle of the drainage device can be directly drained to the superior and inferior ophthalmic veins on the surface of the sclera, thereby reducing the intraocular pressure of the patient and avoiding the blockage of the drainage valve body and the occurrence of various inflammations.

[0015] Secondly, the delivery system of the microporous drainage device for ophthalmic surgery of the present invention uses sutures to fix it on the superficial sclera surface through the through holes on the drainage device. The method is simple and efficient, avoiding the displacement and deformation of the drainage tube, thereby protecting the patient's iris, lens, etc., and ensuring that the glaucoma valve can be used normally.

[0016] Thirdly, the delivery system of the microporous drainage device for ophthalmic surgery of the present invention replaces the artificial ligation microtube, which greatly reduces the difficulty of fixing the vein on the drainage valve body and also reduces the difficulty of implanting the drainage device.

[0017] Fourthly, the microporous drainage device for ophthalmic surgery and its delivery system of the present invention can solve the problem of high intraocular pressure in glaucoma, while avoiding various inflammatory problems caused by the implantation of commonly used drainage valves, thereby safely and efficiently treating glaucoma. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a microporous drainage device for ophthalmic surgery;

[0019] Figure 2A schematic diagram of the structure of a delivery system of a microporous drainage device for ophthalmic surgery;

[0020] Figure 3 for Figure 2 A schematic top sectional view of the structure of the delivery system of the microporous drainage device for ophthalmic surgery;

[0021] Figure 4 for Figure 2 A schematic diagram of the enlarged cross-sectional structure of the middle drainage device installed on the operating head;

[0022] Figure 5 for Figure 2 A schematic diagram of the three-dimensional enlarged structure of the middle operating head;

[0023] Figure 6 for Figure 5 A three-dimensional enlarged structural diagram of the middle fixing member;

[0024] Figure 7 for Figure 6 A schematic diagram of a side cross-sectional structure of ;

[0025] Figure 8 for Figure 4 Schematic diagram of the enlarged structure of the surgical suture;

[0026] In the figure: a drainage valve body 1 (including: a fixing part 1.1, a first drainage part 1.2, a second drainage part 1.3), a microporous drainage channel 2, a through hole 3, a hand-held rod 4, an operating head 5 (including: an annular groove 5.11, an annular head 5.1, an operating rod 5.2, a limiting hole 5.21, a fixing part 5.3, a clamping hole 5.4), a pull rod 6, and a surgical suture 7 (including: a closed annular part 7.1, a pull part 7.2, a first end 7.3, a second end 7.4, a slipknot 7.5). DETAILED DESCRIPTION

[0027] The following is a detailed description of the implementation of the present invention in conjunction with the implementation cases, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0028] like Figure 1A microporous drainage device for ophthalmic surgery shown in the figure comprises a drainage valve body 1, the drainage valve body 1 has a fixed part 1.1, a first drainage part 1.2 and a second drainage part 1.3; the first drainage part 1.2 is arranged on one side of the fixed part 1.1, and is used to insert a thin tube into the anterior chamber of the patient's eyeball; the second drainage part 1.3 is arranged on the other side of the fixed part 1.1 opposite to the first drainage part 1.2, and is used to connect with the thin tube of the patient's eyeball vein; the drainage valve body 1 is provided with a microporous drainage channel 2, and the microporous drainage channel 2 sequentially passes through the first drainage part 1.2, the fixed part 1.1 and the second drainage part 1.3. The fixed part 1.1 is provided with a plurality of through holes 3 for sutures to pass through. The second drainage part 1.3 is a flexible component made of a flexible material. The fixed part 1.1 is a plate-like component, and the first drainage part 1.2 and the second drainage part 1.3 are needle-like components.

[0029] like Figure 2 and Figure 3 The transport system of a microporous drainage device for ophthalmic surgery shown in the figure comprises a hollow hand-held rod 4, one end of which is provided with an operating head 5 for fixing a drainage valve body 1, the other end of which is provided with a wire drawing rod 6, a surgical suture 7 is passed through the hand-held rod 4, the surgical suture 7 comprises a closed ring portion 7.1 and a wire drawing portion 7.2, the closed ring portion 7.1 is embedded in the operating head 5, the wire drawing portion 7.2 is fixedly connected to the wire drawing rod 6, and the wire drawing portion 7.2 and the wire drawing rod 6 can be fixed by glue.

[0030] like Figures 4 to 7 As shown, the operating head 5 includes an annular head 5.1, an operating rod 5.2 and a fixing member 5.3. One end of the operating rod 5.2 is clamped with the hand-held rod 4, and the other end of the operating rod 5.2 is fixedly connected to the annular head 5.1. The inner cavities of the operating rod 5.2 and the annular head 5.1 are connected. The fixing member 5.3 has an end sleeve and a sleeve extension arm. The end sleeve of the fixing member 5.3 is tightly nested with the operating rod 5.2 as a whole. The head of the extension arm of the fixing member 5.3 is provided with a clamping hole 5.4 for embedding the drainage valve body 1. The annular head 5.1 is provided with an annular groove 5.11 for accommodating the closed annular portion 7.1 of the surgical suture 7. The drainage valve body 1 is pre-clamped on the clamping hole 5.4 and can be taken out after the fixation is completed.

[0031] like Figure 8 As shown, the surgical suture 7 has a first end 7.3 and a second end 7.4. The first end 7.3 is wound around the body of the surgical suture 7 to form a slipknot 7.5, thereby forming a closed ring portion 7.1; the second end 7.4 passes through the operating rod 5.2 and the hand-held rod 4 to form a wire-pulling portion 7.2 fixedly connected to the wire-pulling rod 6. A limiting hole 5.21 is provided at the connection between the operating rod 5.2 and the annular head 5.1. The limiting hole 5.21 is used to limit the slipknot 7.5, so that only the wire-pulling portion 7.2 of the surgical suture 7 can pass through.

[0032] The microporous drainage device for ophthalmic surgery and its delivery system of the present invention are used to drain the aqueous humor of the anterior chamber angle to the veins on the sclera surface. The operation method is as follows:

[0033] 1) Find the vein on the surface of the sclera, insert the second drainage part 1.3 of the drainage device fixed on the delivery system into the broken end of the vein, and pull the wire rod 6 outward to drive the wire part 7.2 of the surgical suture 7 in the delivery system to be pulled outward, so that the closed ring part 7.1 is drawn out of the annular groove 5.11 and shrinks, and the second drainage part 1.3 of the drainage device is fixed on the vein;

[0034] 2) After the second drainage part 1.3 of the drainage device is fixed on the vein, the drainage device is removed from the delivery system with forceps, the surgical suture 7 is cut with scissors, and the delivery system is removed;

[0035] 3) From the puncture hole of the scleral flap to the anterior chamber angle, the first drainage part 1.2 of the drainage device is inserted into the anterior chamber angle. At this time, the drainage device is not fixed yet;

[0036] 4) The drainage device is fixed on the superficial scleral surface by manually passing sutures through the through hole 3 on the fixing part 1.1 of the drainage device.

[0037] The microporous drainage device for ophthalmic surgery of the present invention and its delivery system can drain the aqueous humor of the anterior chamber angle into the vein of the eyeball, control the intraocular pressure and avoid various inflammations caused by conventional drainage valves. At the same time, the method of fixing the drainage tube on the superficial sclera surface through the through hole on the fixing part with sutures is simple and efficient, avoiding displacement and deformation of the drainage tube, thereby protecting the iris and lens of the eyeball, and ensuring that the glaucoma valve can be used normally. With the assistance of the delivery system, the manual ligation of the microtube is replaced, which greatly reduces the difficulty of fixing the vein on the drainage valve and also reduces the difficulty of implanting the device.

[0038] The above are only specific embodiments of the present invention. It should be pointed out that any changes or substitutions that can be easily thought of by any technician familiar with the field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. The rest not described in detail are prior arts.

Claims

1. A microporous drainage device for ophthalmic surgery, characterized in that: The drainage device comprises a drainage valve body (1), the drainage valve body (1) comprising a fixed portion (1.1), a first drainage portion (1.2) and a second drainage portion (1.3); the first drainage portion (1.2) is arranged on one side of the fixed portion (1.1) and is used for inserting a thin tube into the anterior chamber of the patient's eyeball; the second drainage portion (1.3) is arranged on the other side of the fixed portion (1.1) opposite to the first drainage portion (1.2) and is used for connecting to the thin tube in the patient's eyeball vein; the drainage valve body (1) is provided with a microporous drainage channel (2), the microporous drainage channel (2) sequentially passing through the first drainage portion (1.2), the fixed portion (1.1) and the second drainage portion (1.3); The fixing portion (1.1) is provided with a plurality of through holes (3) for sutures to pass through; The fixing part (1.1) is a plate-shaped component, and the first drainage part (1.2) and the second drainage part (1.3) are needle-shaped components.

2. The microporous drainage device for ophthalmic surgery according to claim 1, characterized in that: The second drainage portion (1.3) is a flexible component made of flexible material.

3. A delivery system for the microporous drainage device for ophthalmic surgery according to claim 1 or 2, characterized in that: The invention comprises a hollow hand-held rod (4), one end of which is provided with an operating head (5) for fixing a drainage valve body (1), and the other end of which is provided with a wire drawing rod (6). A surgical suture (7) is provided through the hand-held rod (4), and the surgical suture (7) comprises a closed annular portion (7.1) and a wire drawing portion (7.2). The closed annular portion (7.1) is embedded in the operating head (5), and the wire drawing portion (7.2) is fixedly connected to the wire drawing rod (6). The operating head (5) comprises an annular head (5.1), an operating rod (5.2) and a fixing piece (5.3); one end of the operating rod (5.2) is clamped with a hand-held rod (4); the other end of the operating rod (5.2) is fixedly connected to the annular head (5.1); the inner cavities of the operating rod (5.2) and the annular head (5.1) are in communication; the fixing piece (5.3) is integrally connected with the operating rod (5.2); and a clamping hole (5.4) for embedding the diversion valve body (1) is provided on the fixing piece (5.3).

4. The conveying system according to claim 3, characterized in that: The surgical suture (7) has a first end (7.3) and a second end (7.4); the first end (7.3) is wrapped around the body of the surgical suture (7) to form a slipknot (7.5), thereby forming a closed loop portion (7.1); and the second end (7.4) passes through the operating rod (5.2) and the hand-held rod (4) to form a wire pulling portion (7.2) fixedly connected to the wire pulling rod (6).

5. The conveying system according to claim 4, characterized in that: A limiting hole (5.21) is provided at the connection between the operating rod (5.2) and the annular head (5.1), and the limiting hole (5.21) is used to limit the slipknot (7.5) so that only the pulling part (7.2) of the surgical suture (7) can pass through.

6. The conveying system according to claim 5, characterized in that: An annular groove (5.11) for accommodating the closed annular portion (7.1) of the surgical suture (7) is arranged inside the annular head (5.1).

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