Aqueous humor drainage tube plugger, implantation device, and removal device

Abstract

A plug for aqueous humor drainage tubes, an implantation device, and a removal device include a plug body, which is a conical structure. The bottom surface of the conical plug body is provided with a connecting protrusion extending outward, and the bottom surface of the plug body is provided with a magnetic connection structure. The magnetic connection structure is fixedly connected to the bottom surface of the plug body. The bottom surface of the plug body is also provided with an expansion layer structure, which is connected to the bottom surface of the plug body and covers the magnetic connection structure. The end of the magnetic connection structure extends outside the expansion layer structure. The present invention temporarily blocks the aqueous humor drainage tube of a glaucoma drainage implant to reduce the deposition of lens fragments, viscoelastics, inflammatory substances, etc. in the drainage tube during surgery, thereby reducing the intraocular pressure fluctuation of glaucoma patients after cataract surgery and avoiding the failure of glaucoma drainage implant surgery.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmic medical instruments, and in particular to an aqueous humor drainage tube plugger, an implantation device and a removal device. Background Art

[0002] Glaucoma is a group of neurodegenerative diseases characterized by progressive apoptosis of retinal ganglion cells (RGCs) and visual field loss. It is a major irreversible blinding eye disease worldwide. Treatments for glaucoma include medication, laser therapy, and surgery. In recent years, with the continuous development of glaucoma drainage implants (GDIs) and implantation technologies, including the Express Glaucoma Drainage Pin, XEN Gel Stent, and InnFocus Micro Drainage Tube, these devices have been rapidly adopted due to their advantages of minimal trauma, rapid recovery, strong operability, low surgical risk, and few complications. They have even become the preferred surgical procedure for glaucoma treatment for many researchers.

[0003] GDI surgery can accelerate the development of cataracts. Studies have found that 54% of phakic patients who undergo GDI surgery will develop significant cataracts within 5 years after surgery, requiring further cataract surgery. However, cataract surgery can affect the current intraocular pressure (IOP) control of these patients, and some patients may even require additional IOP-lowering medication or further glaucoma surgery to control IOP.

[0004] Cataract surgery can affect the IOP-lowering effect of GDI surgery, but the causes and mechanisms involved remain unclear. Possible causes include lens fragments from cataract surgery clogging the drainage tube, viscoelastic residue within the drainage tube, and increased postoperative inflammatory response leading to scarring of tissue near the drainage tube. These factors can obstruct aqueous humor drainage, leading to fluctuations in IOP and even significant increases. Many glaucoma patients undergoing GDI surgery are very sensitive to postoperative increases in IOP, and large fluctuations in IOP may further damage the visual field and optic nerve.

[0005] In order to avoid the impact of cataract surgery on the intraocular pressure-lowering effect of GDI surgery, it is necessary to reduce the risk of possible drainage tube blockage during cataract surgery. Therefore, it is important and necessary to design an effective device to temporarily block the aqueous humor drainage tube of glaucoma drainage implants during cataract surgery.

[0006] Currently, there are no devices specifically designed to temporarily occlude aqueous humor drainage tubes during cataract surgery. Some studies have proposed using disposable ophthalmic retractors to temporarily occlude GDI drainage tubes to reduce postoperative intraocular pressure fluctuations. However, this method does not completely occlude the drainage tube during surgery, and there is still a risk of lens fragments and viscoelastics entering the drainage tube. Furthermore, pulling the drainage tube toward the peripheral anterior chamber increases the risk of corneal endothelial damage.

[0007] Therefore, there is a need to find a device and method that can effectively block the aqueous humor drainage tube of a glaucoma drainage implant during cataract surgery. Summary of the Invention

[0008] In order to solve the technical defects of the prior art, the present invention provides an aqueous humor drainage tube plugger, an implantation device and a removal device.

[0009] The technical solution adopted by the present invention is: an aqueous humor drainage tube plugger, including a plugger body, the plugger body is a conical structure, the bottom surface of the conical structure of the plugger body is provided with a connecting protrusion extending outward, the bottom surface of the plugger body is provided with a magnetic connection structure, the magnetic connection structure is fixedly connected to the bottom surface of the plugger body, and the bottom surface of the plugger body is also provided with an expansion layer structure, the expansion layer structure is connected to the bottom surface of the plugger body and covers the magnetic connection structure, and the end of the magnetic connection structure extends outside the expansion layer structure.

[0010] The conical surface of the plug body of the conical structure is provided with a plurality of thread structures.

[0011] The magnetic connection structure is a circular ring structure, and a clamping groove is formed on the inner side of the circular ring structure.

[0012] The plug body is made of flexible polymer material with biological safety.

[0013] The expansion layer structure is made of a polymer material with water absorption and expansion properties.

[0014] A device for implanting an aqueous humor drainage tube occluder includes a needle body, a push injection device is provided in the needle body, the aqueous humor drainage tube occluder is placed on the push injection device in the needle body, an electromagnetic device is provided at the front end of the push injection device, the electromagnetic device is magnetically engaged with a magnetic connection structure on the aqueous humor drainage tube occluder, and a groove is provided in the middle of the magnetic connection structure to adapt to the connection protrusion of the occluder body.

[0015] The needle body is also provided with a power supply and a control mechanism of the electromagnetic device.

[0016] The front end of the needle tube body is also provided with a positioning device for adapting to aqueous humor drainage tubes of different sizes. The positioning device is detachably connected to the needle tube body. The positioning device is a support frame structure, which includes a connecting ring at the bottom connected to the needle tube body and a positioning ring at the upper end connected to the aqueous humor drainage tube, as well as a bracket between the connecting ring and the positioning ring.

[0017] The connecting ring is plug-fitted to the needle tube body.

[0018] A device for removing an aqueous humor drainage tube plugger includes a rod body, a horizontally arranged attraction structure is provided at the front end of the rod body, the attraction structure is made of permanent magnet material, and the side of the attraction structure extends outward to form a boss that is adapted to the clamping groove on the inner side of the magnetic connection structure of the aqueous humor drainage tube plugger.

[0019] The beneficial effects of the present invention are: the present invention provides an aqueous humor drainage tube plugger, an implantation device and a removal device, including a plugger body, the plugger body is a conical structure, the bottom surface of the conical structure of the plugger body is provided with a connecting protrusion extending outward, the bottom surface of the plugger body is provided with a magnetic connection structure, the magnetic connection structure is fixedly connected to the bottom surface of the plugger body, and an expansion layer structure is also provided on the bottom surface of the plugger body, the expansion layer structure is connected to the bottom surface of the plugger body and covers the magnetic connection structure, and the end of the magnetic connection structure extends outside the expansion layer structure. The present invention temporarily blocks the aqueous humor drainage tube of the glaucoma drainage implant to reduce the deposition of lens fragments, viscoelastics and inflammatory substances in the drainage tube during surgery, thereby reducing the intraocular pressure fluctuations of glaucoma patients after cataract surgery, and avoiding the failure of glaucoma drainage implant surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the aqueous humor drainage tube plugger of the present invention.

[0021] Figure 2 This is a schematic diagram of the bottom structure of the aqueous humor drainage tube plugger of the present invention.

[0022] Figure 3 Schematic diagram of the structure of the implant device of the present invention.

[0023] Figure 4 Schematic diagram of the positioning device structure of the implant device of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the removal device of the present invention.

[0025] Among them, 1-plug body, 2-connecting protrusion, 3-magnetic connection structure, 4-expansion layer structure, 5-needle tube body, 6-positioning device, 7-rod body, 31-clamping groove, 51-injection device, 52-electromagnetic device, 53-power supply and control mechanism, 61-connecting ring, 62-positioning ring, 71-attraction structure, 72-boss. DETAILED DESCRIPTION

[0026] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] The aqueous humor drainage tube plugger includes a plugger body 1, which is a conical structure. The conical surface of the plugger body 1 is provided with a plurality of threaded structures. The bottom surface of the conical plugger body 1 is provided with a connecting protrusion 2 extending outward. The bottom surface of the plugger body 1 is provided with a magnetic connection structure 3, which is fixedly connected to the bottom surface of the plugger body 1. The bottom surface of the plugger body 1 is also provided with an expansion layer structure 4, which is connected to the bottom surface of the plugger body 1 and covers the magnetic connection structure 3. The end of the magnetic connection structure 3 extends outside the expansion layer structure 4. The expansion layer structure 4 expands after absorbing water to achieve a sealing effect. The magnetic connection structure 3 is a circular ring structure, and a snap-in groove 31 is formed on the inner side of the circular ring structure magnetic connection structure 3. The present invention temporarily blocks the aqueous humor drainage tube of the glaucoma drainage implant to reduce the deposition of lens fragments, viscoelastics and inflammatory substances in the drainage tube during surgery, thereby reducing the intraocular pressure fluctuation of glaucoma patients after cataract surgery and avoiding the failure of glaucoma drainage implant surgery.

[0028] The plug body 1 is made of a flexible polymer material with biological safety.

[0029] The expansion layer structure 4 is made of a polymer material having water absorption and expansion properties.

[0030] An implantation device for an aqueous humor drainage tube obturator includes a needle body 5, a push-injection device 51 disposed within the needle body 5, and an aqueous humor drainage tube obturator placed on the push-injection device 51 within the needle body 5. An electromagnetic device 52 is disposed at the front end of the push-injection device 51. The electromagnetic device 52 magnetically engages with a magnetic connection structure 3 on the aqueous humor drainage tube obturator, and a groove is disposed in the middle of the magnetic connection structure 3 that mates with a connection protrusion 2 of the obturator body. During use, the aqueous humor drainage tube obturator is attracted by the electromagnetic device 52, injected into the aqueous humor drainage tube via the push-injection device 51, and then the magnetism of the electromagnetic device 52 is cut off, causing the aqueous humor drainage tube obturator to be detached from the implantation device.

[0031] The needle body 5 is also provided with a power supply and a control mechanism 53 of the electromagnetic device 52 .

[0032] The front end of the needle body 5 is also equipped with a positioning device 6 for adapting to aqueous humor drainage tubes of different sizes. The positioning device 6 is detachably connected to the needle body 5 and comprises a support structure comprising a connecting ring 61 at the bottom connected to the needle body 5, a positioning ring 62 at the top connected to the aqueous humor drainage tube, and a bracket between the connecting ring 61 and the positioning ring 62. Positioning by the positioning ring 62 makes it easier to align the needle body 5 with the aqueous humor drainage tube and inject the aqueous humor drainage tube plug. The split design allows for adapting positioning devices 6 of different sizes to suit different aqueous humor drainage tube sizes.

[0033] The connecting ring 61 is plug-fitted to the needle body 5 .

[0034] A device for removing an aqueous humor drainage tube obturator includes a rod 7 with a horizontally disposed attraction structure 71 at its front end. The attraction structure 71 is made of a permanent magnet. The side surfaces of the attraction structure 71 extend outward to form a boss 72 that fits within a snap-fit ​​groove 31 within the magnetic connection structure 3 of the aqueous humor drainage tube obturator. During use, the boss 72 snaps into engagement with the snap-fit ​​groove 31 within the connection structure 3, and the magnetic force is used to remove the aqueous humor drainage tube obturator from the aqueous humor drainage tube.

[0035] Technical personnel should note: Although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention. Any modification using the inventive concept will be included in the scope of protection of this patent.

[0036] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. Aqueous humor drainage tube plugger, comprising a plugger body (1), characterized in that The plug body (1) is a conical structure. The bottom surface of the plug body (1) of the conical structure is provided with a connecting protrusion (2) extending outward. The bottom surface of the plug body (1) is provided with a magnetic connecting structure (3). The magnetic connecting structure (3) is fixedly connected to the bottom surface of the plug body (1). The bottom surface of the plug body (1) is also provided with an expansion layer structure (4). The expansion layer structure (4) is connected to the bottom surface of the plug body (1) and covers the magnetic connecting structure (3). The end of the magnetic connecting structure (3) extends to the outside of the expansion layer structure (4). The conical surface of the plug body (1) of the conical structure is provided with a plurality of threaded structures. The expansion layer structure (4) is made of a polymer material with water absorption and expansion properties.

2. The aqueous humor drainage tube plugger according to claim 1, characterized in that: The magnetic connection structure (3) is a circular ring structure, and a clamping groove (31) is formed on the inner side of the circular ring structure magnetic connection structure (3).

3. The aqueous humor drainage tube plugger according to claim 1, characterized in that: The plug body (1) is made of a flexible polymer material with biosafety.

4. An implantation device for the aqueous humor drainage tube plugger according to claim 1, characterized in that: The invention comprises a needle tube body (5), wherein a push injection device (51) is provided in the needle tube body (5), and an aqueous humor drainage tube plugger is placed on the push injection device (51) in the needle tube body (5). An electromagnetic device (52) is provided at the front end of the push injection device (51), and the electromagnetic device (52) is magnetically matched with a magnetic connection structure (3) on the aqueous humor drainage tube plugger. A groove adapted to a connection protrusion (2) of the plugger body is provided in the middle of the magnetic connection structure (3).

5. The implant device according to claim 4, characterized in that The needle body (5) is also provided with a power supply and a control mechanism (53) of the electromagnetic device (52).

6. The implant device according to claim 4, characterized in that The front end of the needle tube body (5) is further provided with a positioning device (6) for adapting to aqueous humor drainage tubes of different sizes. The positioning device (6) is detachably connected to the needle tube body (5). The positioning device (6) is a support frame structure, which includes a connecting ring (61) at the bottom connected to the needle tube body (5), a positioning ring (62) at the top connected to the aqueous humor drainage tube, and a bracket between the connecting ring (61) and the positioning ring (62).

7. The implant device according to claim 6, characterized in that The connecting ring (61) is plug-fitted to the needle tube body (5).

8. A device for removing the aqueous humor drainage tube plugger according to claim 1, characterized in that: The invention comprises a rod body (7), wherein a horizontally arranged attraction structure (71) is provided at the front end of the rod body (7), wherein the attraction structure (71) is made of a permanent magnet material, and the side surface of the attraction structure (71) extends outward to form a boss (72) adapted to the inner side of the clamping groove (31) of the magnetic connection structure (3) of the aqueous humor drainage tube plugger.

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