CN113057796B

CN113057796B - Improved glaucoma aqueous humor drainage tube

Info

Publication number: CN113057796B
Application number: CN202110327783.4A
Authority: CN
Inventors: 孙礼华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2023-06-23
Anticipated expiration: 2041-03-26
Also published as: CN113057796A

Abstract

The invention provides an improved glaucoma aqueous humor drainage tube, and particularly relates to the field of ophthalmic medical equipment. The utility model provides an improvement formula glaucoma aqueous humor drainage tube, includes outer tube and interior sleeve pipe that overlap each other, the front end of outer tube is provided with the valve port, be provided with the drug discharge mouth under the valve port, the cover is provided with the osmotic membrane on the drug discharge mouth, the drug discharge mouth upper cover is equipped with the inside medicine bag that is located the outer tube, the medicine bag with form between the osmotic membrane and store up the medicine chamber, interior sheathed tube front end is provided with extrusion portion, be provided with on the extrusion portion just to the thimble of drug discharge mouth. The invention utilizes the extrusion effect of the inner sleeve on the medicine bag to rapidly discharge the medicine in the medicine storage cavity, thereby accelerating the treatment effect; after the medicine is extruded, the medicine bag and the permeable membrane are pierced by the thimble to form a plurality of openings, so that the blockage of the drainage tube is avoided.

Description

Improved glaucoma aqueous humor drainage tube

Technical Field

The invention relates to the field of ophthalmic medical equipment, in particular to an improved glaucoma aqueous humor drainage tube.

Background

Glaucoma is the second irreversible blindness-causing eye disease in the whole world, and is one of the main blindness-causing eye diseases in China. Glaucoma is mainly due to blindness caused by an uneven drainage of aqueous humor in the eye, which increases intraocular pressure and eventually leads to atrophy of the optic nerve. The total population had a 1% incidence and 2% after the age of 45. Glaucoma is clinically classified into three major categories, primary, secondary and congenital, according to etiology, angle of the atrium, and tonography.

Although anti-glaucoma drugs, laser technology, offer technology and possibilities for controlling intraocular pressure, a significant fraction of glaucoma patients eventually have to receive surgical treatment due to the specificity of the disease. For glaucoma treatment, the most common use at home and abroad is the placement of a glaucoma drainage valve in a anterior chamber pipeline. Clinically, the anti-glaucoma operation treatment is the ultimate treatment method in the current treatment mode capable of effectively controlling the disease development. The operation is to cut off trabecular tissue to establish a passage from the inside of the eye to the subconjunctival outside the eye wall, so that aqueous humor in the eye can be drained from another way, thereby achieving the effect of reducing intraocular pressure. The stable aqueous humor drainage channel is constructed, and the stable aqueous humor drainage effect is obtained, so that the postoperative long-term effect of the operation is improved, and the method is a key point of glaucoma operation treatment.

But glaucoma aqueous humor drainage tube among the prior art, in order to avoid the jam problem of drainage tube, through the arrangement of a plurality of oozing liquid mouths, pack into the medicine in the drainage tube simultaneously to carry out adjunctie therapy to glaucoma, final medicine discharges the drainage tube through the mode of diffusion, and medicine exhaust efficiency is lower, can not reach treatment fast, influences the progress of operation.

Disclosure of Invention

The invention aims to provide an improved glaucoma aqueous humor drainage tube which can enable medicines to be released rapidly and improve drainage efficiency of aqueous humor.

Embodiments of the present invention are implemented as follows:

the utility model provides an improvement formula glaucoma aqueous humor drainage tube, includes outer tube and interior sleeve pipe that overlap each other, the front end of outer tube is provided with the valve port, be provided with the drug discharge mouth under the valve port, the cover is provided with the osmotic membrane on the drug discharge mouth, the drug discharge mouth upper cover is equipped with the inside medicine bag that is located the outer tube, the medicine bag with form between the osmotic membrane and store up the medicine chamber, interior sheathed tube front end is provided with extrusion portion, be provided with on the extrusion portion just to the thimble of drug discharge mouth.

In some embodiments of the invention, the drug discharge ports are provided with a plurality of rows along the axial direction of the outer sleeve.

In some embodiments of the invention, each row of the drug discharge ports is aligned in the axial direction of the outer sleeve.

In some embodiments of the invention, the number of drug discharge ports in each row is the same.

In some embodiments of the present invention, each row of the drug discharge openings is disposed in a cross-shaped configuration in a cross-section of the outer sleeve.

In some embodiments of the invention, the diameter of the extrusion is greater than the inner sleeve.

In some embodiments of the invention, the transition between the inner sleeve and the extrusion is made by an arcuate segment.

In some embodiments of the invention, the rear end of the outer sleeve is sleeved with a cleaning sleeve, and the cleaning sleeve is positioned outside the outer sleeve.

In some embodiments of the present invention, a clamping structure is disposed between the cleaning sleeve and the inner sleeve.

When the improved aqueous humor drainage tube is used, firstly, an injection tube with a sharp tip of an injector pierces an aqueous humor below a cornea of an eye, one end of an outer sleeve pierces the aqueous humor and is implanted into the eye, at the moment, a valve port and a drug discharge port are positioned in the eye, aqueous humor enters the outer sleeve from the valve port, and is discharged from the drainage tube through the inner sleeve and a drainage port on the inner sleeve; before puncture, medicine is added into the medicine storage cavity between the permeable membrane and the medicine bag, then the inner sleeve is drawn back, the inner sleeve drives the extrusion part to move back, the extrusion part extrudes the medicine bag, and the medicine in the medicine storage cavity is discharged out of the medicine storage cavity through the medicine discharge port to assist in treating the atrial angle; when the inner sleeve is drawn, the thimble at the rear end of the extrusion part pierces the medicine bag and the permeable membrane, so that the medicine discharge port is opened, and a plurality of opening structures are formed on the outer sleeve at the moment, so that the problem that the drainage of aqueous humor is influenced by the blockage of a single opening by large tissue substances is avoided, and the smoothness of drainage is ensured.

In some embodiments of the present invention, the above-mentioned clamping structure includes a male clamping portion and a female clamping groove that are mutually clamped and matched, the male clamping portion is disposed on the inner sleeve, and the female clamping groove is disposed at the rear end of the cleaning sleeve.

Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:

1. according to the invention, the plurality of medicine discharging ports and the corresponding medicine bags are arranged on the outer sleeve, so that a plurality of medicine storage cavities are formed, the extrusion part is arranged at one end of the inner sleeve, when the inner sleeve is pulled, the medicine in the medicine storage cavities can be rapidly discharged and released out of the outer sleeve by utilizing the extrusion action of the extrusion part on the medicine bags, and the release of the medicine in all directions is accelerated, so that a better treatment effect is achieved.

2. According to the invention, the ejector pin is arranged at the tail end of the extrusion part, after the medicine is extruded, the medicine bag and the permeable membrane are pierced by the ejector pin, so that a plurality of openings for the aqueous humor to pass through are formed at the medicine discharge port, the circulation port of the aqueous humor is increased, and the blockage of the drainage tube is avoided.

3. The cleaning sleeve and the inner sleeve are mutually clamped, the cleaning sleeve can be driven to slide outside the outer sleeve by pushing the inner sleeve, the ejector pin positioned on the extrusion part is used for ejecting the blocking object in the drug outlet to the drug outlet, and then the cleaning sleeve pushes the ejected blocking object away to re-open each opening, so that the smoothness of drainage is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view (cross-sectional view) of an aqueous humor drainage tube according to an embodiment of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic view of the structure of an outer sleeve according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an inner sleeve according to an embodiment of the present invention.

Icon: 1-an outer sleeve; 2-valve port; 3-a medicine outlet; 4-osmosis membrane; 5-a medicine bag; 6-an inner sleeve; 7-an extrusion part; 8-arc-shaped sections; 9-thimble; 10-cleaning the sleeve; 11-a protruding clamping part; 12-concave clamping grooves; 13-drainage port.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper," "lower," "inner," "outer," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, "plurality" means at least 2.

In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram (cross-sectional view) of an aqueous humor drainage tube according to an embodiment of the present invention shown in fig. 1; FIG. 2 is an enlarged view of FIG. 1 at A; FIG. 3 is a schematic view of the structure of an outer sleeve according to an embodiment of the present invention; fig. 4 is a schematic structural view of an inner sleeve according to an embodiment of the present invention.

The utility model provides an improvement formula glaucoma aqueous humor drainage tube, includes outer tube 1 and interior sleeve pipe 6 that mutually overlaps, establishes for closely overlapping between outer tube 1 and the interior sleeve pipe 6, both can realize overlapping between outer tube 1 and the interior sleeve pipe 6 and establish the slip, can make laminating between outer tube 1 and the interior sleeve pipe 6 again inseparable simultaneously, guarantees the relative seal in clearance between outer tube 1 and the interior sleeve pipe 6, forms the drainage channel of aqueous humor.

The front end of the outer sleeve 1 is provided with a valve port 2, in the embodiment, the valve port 2 is conical, and the valve port 2 plays a role in guiding the aqueous humor so that the aqueous humor enters the drainage tube; the lower extreme of valve port 2 is provided with row medicine mouth 3, and row medicine mouth 3 is circular in this embodiment, and the cover is provided with osmotic membrane 4 on the row medicine mouth 3, and osmotic membrane 4 prevents under normal circumstances that the outside aqueous humor of drainage tube from getting into row medicine mouth 3, and row medicine mouth 3 upper cover is equipped with the inside medicine bag 5 that is located outer tube 1, and medicine bag 5 is used for splendid attire medicine for any liquid can not pass through medicine bag 5, so form the medicine storage chamber between medicine bag 5 and osmotic membrane 4, with the medicine storage in the medicine storage chamber before aqueous humor drainage tube gets into the room angle, discharge the medicine through osmotic membrane 4 after getting into the room angle, outside liquid can not get into in the medicine storage chamber this moment.

The front end of the inner sleeve 6 is provided with an extrusion part 7, the extrusion part 7 is used for extruding the medicine bags 5, and when the inner sleeve 6 is drawn, the extrusion part 7 retreats along with the inner sleeve 6, so that medicines in the medicine bags 5 can be extruded to the medicine discharge port 3 one by one, and the release of the medicines is realized. The extrusion part 7 is provided with the thimble 9 just facing the drug discharge port 3, the shape of the thimble 9 is round table shape in this embodiment, the thimble 9 is arranged at the tail part of the extrusion part 7, the thimble 9 is used for tearing the drug bag 5 and the permeable membrane 4 together after the drug in the drug bag 5 is extruded by the extrusion part 7, thereby the outside of the drainage tube is communicated with the inside of the drainage tube through the drug discharge port 3, the drug discharge port 3 forms a plurality of openings, the effect of drainage of aqueous humor can be jointly realized, the problem that a single opening is blocked by massive tissues is avoided, the rear end of the inner sleeve 6 is provided with the drainage port 13, and the aqueous humor is timely extracted from the drainage tube by the force applied by the outside through the drainage port 13.

When the improved aqueous humor drainage tube is used, firstly, an injection tube with a sharp tip of an injector pierces an aqueous humor below a cornea of an eye, one end of an outer sleeve 1 pierces the aqueous humor and is implanted into the eye, at the moment, a valve port 2 and a drug discharge port 3 are positioned in the eye, aqueous humor enters the outer sleeve 1 from the valve port 2, and is discharged from the drainage tube through an inner sleeve 6 and a drainage port 13 on the inner sleeve 6; before puncture, medicine is added into the medicine storage cavity between the permeable membrane 4 and the medicine bag 5, then the inner sleeve 6 is drawn back, the inner sleeve 6 drives the extrusion part 7 to move back, the extrusion part 7 extrudes the medicine bag 5, and the medicine in the medicine storage cavity is discharged out of the medicine storage cavity through the medicine discharge port 3, so as to assist in treating the atrial angle; when the inner sleeve 6 is drawn, the thimble 9 at the rear end of the extrusion part 7 pierces the medicine bag 5 and the permeable membrane 4, so that the medicine discharging port 3 is opened, and a plurality of opening structures are formed on the outer sleeve 1 at the moment, so that the problem that the drainage of aqueous humor is influenced by the blockage of a single opening by large tissue substances is avoided, and the smoothness of drainage is ensured.

Example 2

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 1 in that: the drug discharging ports 3 in the embodiment are provided with a plurality of rows along the axial direction of the outer sleeve 1, and each row of drug discharging ports 3 is uniformly distributed in the circumferential direction of the outer sleeve 1.

The function of arranging a plurality of rows of drug discharge ports 3 is that: on the one hand, a plurality of medicine storage cavities are added, so that more or more kinds of medicines can be placed while the aqueous humor is drained, and on the other hand, after the thimble 9 pierces the medicine bag 5 and the permeable membrane 4, a plurality of openings convenient for the aqueous humor to pass through can be formed, so that the drainage of the aqueous humor is facilitated, and the occurrence of the condition that a plurality of openings are simultaneously blocked by massive tissues is also reduced.

The effect of the even distribution of each row of medicine discharging openings 3 in the circumferential direction of the outer sleeve 1 is that: can make the medicine release in the medicine storage cavity more uniform, and meet the medicine requirements in all directions.

Example 3

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 2 in that: in this embodiment, each row of drug discharge ports 3 is aligned in the axial direction of the outer sleeve 1.

The effect of aligning each row of drug discharge ports 3 in the axial direction of the outer sleeve 1 is that: when the inner sleeve 6 is pulled backwards, the ejector pins 9 pierce the medicine bags 5 and the permeable membranes 4 on the medicine discharging ports 3, so that the medicine discharging ports 3 can be scratched more simply if aligned vertically, otherwise, the number of the ejector pins 9 in the circumferential direction of the extrusion part 7 is increased to scratch the medicine bags 5 and the permeable membranes 4 one by one.

Example 4

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 3 in that: the number of drug discharge ports 3 in each row is the same in this embodiment.

The same function is set for realizing the full utilization of the thimble 9 and increasing the number of the drainage openings by arranging the same number of the medicine discharging openings 3 in each row.

Example 5

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 3 in that: in the embodiment, each row of medicine discharging openings 3 is arranged in a cross shape on the cross section of the outer sleeve 1.

The cross-shaped arrangement of the drug discharging openings 3 on the cross section of the outer sleeve 1 has the effect of realizing the uniform distribution of the drug discharging openings 3, so that the drug release in the drug storage cavity can be more uniform, and the drug requirements in all directions can be met.

Example 6

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 1 in that: the diameter of the press portion 7 in this embodiment is larger than the inner sleeve 6.

The effect of designing the diameter of the press 7 to be larger than the inner sleeve 6 is that: the extrusion part 7 is convenient for extruding the medicine bag 5 on the outer sleeve 1 when the inner sleeve 6 is sleeved in the outer sleeve 1 to slide, and if the diameter of the extrusion part 7 is smaller than or equal to that of the inner sleeve 6, the extrusion part 7 can not extrude the medicine bag 5.

Example 7

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 7 in that: in this embodiment, the transition between the inner sleeve 6 and the press section 7 takes place via an arcuate segment 8.

The effect of the transition of the inner sleeve 6 to the extrusion 7 via the arc segment 8 is that: the arc section 8 is used for realizing buffer extrusion of the medicine bag 5, and guaranteeing smooth and steady extrusion. If the arc section 8 is not arranged, the connection between the inner sleeve 6 and the extrusion part 7 is easy to damage the medicine bag 5 when the inner sleeve 6 is pulled, so that the medicine bag 5 is broken when the medicine is not released outside the medicine discharging port 3, the medicine can be directly flowed into the inner sleeve 6 along with the room water, and finally discharged from the drainage port 13, and the medicine is wasted.

Example 8

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 1 in that: the rear end of the outer sleeve 1 of the embodiment is sleeved with a cleaning sleeve 10, and the cleaning sleeve 10 is positioned on the outer side of the outer sleeve 1.

The cleaning sleeve 10 can slide from top to bottom on the surface of the outer sleeve 1, after the thimble 9 pierces the medicine bag 5 and the permeable membrane 4, the medicine discharging port 3 becomes an opening for drainage of aqueous humor, the effect is the same as that of the valve port 2, when drainage of aqueous humor is carried out, massive tissues can block some openings to influence drainage progress of aqueous humor, at this time, the cleaning sleeve 10 slides up and down relative to the outer sleeve 1, the upper end of the cleaning sleeve 10 pushes the tissues blocked at the medicine discharging port 3, and each opening is restarted, so the cleaning sleeve 10 is provided to be favorable for cleaning the tissues blocked at the medicine discharging port 3, and smoothness of drainage is ensured.

Example 9

This example proposes an improved glaucoma aqueous humor drainage tube, which differs from example 8 in that: in this embodiment, a clamping structure is provided between the cleaning sleeve 10 and the inner sleeve 6.

The clamping structure is arranged between the cleaning sleeve 10 and the inner sleeve 6, so that the cleaning sleeve 10 and the inner sleeve 6 are integrated, and the cleaning sleeve 10 can slide up and down by pulling the tail part of the inner sleeve 6. In addition, after the cleaning sleeve 10 and the inner sleeve 6 are integrated, when the blockage is required to be cleaned, the inner sleeve 6 and the cleaning sleeve 10 are pushed forward together, the blockage in the drug outlet 3 is ejected out of the drug outlet 3 by the ejector pin 9 positioned on the extrusion part 7, then the cleaning sleeve 10 pushes away the ejected blockage, and each opening is opened again, so that the smoothness of drainage is ensured.

As an alternative embodiment, the clamping structure comprises a convex clamping part 11 and a concave clamping groove 12 which are mutually clamped and matched, the convex clamping part 11 is arranged on the inner sleeve 6, and the concave clamping groove 12 is arranged at the rear end of the cleaning sleeve 10. The convex clamping part 11 and the concave clamping groove 12 are mutually clamped and matched, so that the cleaning sleeve 10 and the inner sleeve 6 are fixed. The concave clamping groove 12 is arranged at the rear end of the cleaning sleeve 10, so that the inner sleeve 6 can move a long enough distance before being clamped and matched with the cleaning sleeve 10, and all medicine bags 5 and the permeable membranes 4 can be punctured, and all medicine discharging ports 3 are opened.

In summary, the embodiment of the invention provides an improved aqueous humor drainage tube for glaucoma, which is characterized in that a plurality of medicine discharging ports 3 and corresponding medicine bags 5 are arranged on an outer sleeve 1 to form a plurality of medicine storage cavities, an extrusion part 7 is arranged at one end of an inner sleeve 6, when the inner sleeve 6 is pulled, medicine in the medicine storage cavities can be rapidly discharged by utilizing the extrusion action of the extrusion part 7 on the medicine bags 5 and released outside the outer sleeve 1, and the release of the medicine in all directions is accelerated, so that a better treatment effect is achieved.

According to the invention, the ejector pin 9 is arranged at the tail end of the extrusion part 7, after the medicine is extruded, the medicine bag 5 and the permeable membrane 4 are pierced by the ejector pin 9, so that the medicine discharge port 3 forms a plurality of openings for aqueous humor to pass through, the circulation port of aqueous humor is increased, and the blockage of the drainage tube is avoided.

The cleaning sleeve 10 is arranged on the outer side of the outer sleeve 1, the cleaning sleeve 10 and the inner sleeve 6 can be mutually clamped, the cleaning sleeve 10 can be driven to slide on the outer side of the outer sleeve 1 by pushing the inner sleeve 6, the ejector pin 9 positioned on the extrusion part 7 is used for ejecting the blocking object in the medicine opening 3 out of the medicine opening 3, then the cleaning sleeve 10 pushes the ejected blocking object away, and each opening is opened again, so that the smoothness of drainage is ensured.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved glaucoma aqueous humor drainage tube is characterized by comprising an outer sleeve and an inner sleeve which are sleeved with each other, wherein the outer sleeve and the inner sleeve are tightly sleeved with each other, so that the outer sleeve and the inner sleeve can be sleeved with each other for sliding, and meanwhile, the outer sleeve and the inner sleeve can be tightly attached to each other, the relative sealing of a gap between the outer sleeve and the inner sleeve is ensured, and an aqueous humor drainage channel is formed;

the front end of the outer sleeve is provided with a valve port, a medicine outlet is arranged below the valve port, a permeable membrane is covered on the medicine outlet, the permeable membrane prevents aqueous humor outside the drainage tube from entering the medicine outlet, a medicine bag positioned inside the outer sleeve is covered on the medicine outlet, a medicine storage cavity is formed between the medicine bag and the permeable membrane, the front end of the inner sleeve is provided with an extrusion part, and a thimble opposite to the medicine outlet is arranged on the extrusion part;

the rear end cover of outer tube is equipped with the clearance cover, the clearance cover is located the outside of outer tube, be provided with the card between clearance cover and the interior sleeve pipe and establish the structure.

2. The improved aqueous humor drainage tube according to claim 1, wherein the drainage port is provided with a plurality of rows in an axial direction of the outer sleeve.

3. The improved aqueous humor drainage tube of claim 2 wherein each row of the drainage ports is aligned in the axial direction of the outer sleeve.

4. The improved aqueous humor drainage tube for glaucoma as recited in claim 3, wherein the number of drainage ports in each row is the same.

5. The improved aqueous humor drainage tube of glaucoma as recited in claim 3, wherein each row of said drainage ports is cross-shaped in cross-section of said outer sleeve.

6. The improved glaucoma aqueous humor drainage tube of claim 1 wherein the diameter of the pinch is greater than the inner sleeve.

7. The improved glaucoma aqueous humor drainage tube of claim 6 wherein the transition between the inner sleeve and the pinch portion is made by an arcuate segment.

8. The improved aqueous humor drainage tube according to claim 1, wherein the clamping structure comprises a convex clamping portion and a concave clamping groove which are mutually clamped and matched, the convex clamping portion is arranged on the inner sleeve, and the concave clamping groove is arranged at the rear end of the cleaning sleeve.