Drainage auxiliary device based on trabectomy

Abstract

The invention relates to the technical field of medical equipment, in particular to an auxiliary drainage device based on trabectomy, which comprises a support membrane, the support membrane is positioned below sclera flaps of a patient during operation, one side of the support membrane is fixedly connected with an anchoring ring, an intraocular pressure drainage membrane is arranged at the top of the support membrane, and the intraocular pressure drainage membrane comprises a front adjusting block and a rear adjusting block. Both the front adjusting block and the rear adjusting block have elasticity, an aperture adjusting assembly is arranged on the side, close to the anchoring ring, of the front adjusting block, a flow adjusting assembly is arranged in the rear adjusting block, and when the intraocular pressure of the eyes of a postoperative patient changes, the aperture adjusting assembly correspondingly adjusts the drainage circulation aperture, and the flow adjusting assembly correspondingly adjusts the circulation path of aqueous humor drainage; the flow adjusting assembly in the rear adjusting block is coated with a hydrophobic coating. According to the design, the size of the drainage channel is automatically adjusted according to individual differences and inflammatory reaction degrees of patients, so that the long-term stable drainage effect is kept, the complication risk is reduced, and the visual function of the patients is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a drainage auxiliary device based on trabeculectomy. Background Art

[0002] The drainage effectiveness of trabeculectomy depends on meticulous intraoperative technique (eg, scleral flap thickness, antimetabolite concentration) and postoperative dynamic management (suture adjustment, acupressure massage). The key to success lies in balancing aqueous humor drainage with the risk of scarring and maintaining long-term IOP control through individualized strategies. Complications require early identification and intervention to protect visual function.

[0003] In the prior art, the patent document with publication number CN2476266Y discloses a glaucoma drainage arch, which includes a rectangular main body with a spindle-shaped cross-section, a drainage channel extending along its length inside the main body, a wing on each side of the main body, each with a fixing hole, and a fixing hole at the upper and lower ends along the length of the main body, wherein the upper fixing hole is directly on the wall between the main body and the drainage channel on one side, and the lower fixing hole is on the extended part of the wall between the main body and the drainage channel on the same side as the upper fixation. The design adopts a spindle-shaped cross-section design and a drainage channel is arranged inside, which effectively reduces the friction between the tissue and the device and reduces the risk of channel blockage. It also blocks the scar healing of the scleral flap through physical isolation and material properties, and keeps the external drainage channel open for a long time.

[0004] During long-term use after trabeculectomy, protein deposits, inflammatory cells, or fibrous exudates in the aqueous humor may gradually accumulate in the drainage channels. Furthermore, due to individual patient differences, the degree of early postoperative inflammatory response, i.e., intraocular pressure, varies from patient to patient. Since the diameter of the micro-lumen is designed to remain constant, partial or complete blockage may occur, leading to decreased drainage efficiency or even failure. Therefore, it is necessary to propose a drainage assist device based on trabeculectomy to address the above-mentioned issues in the existing technology. Summary of the Invention

[0005] To solve the above problems, the present invention provides a drainage assist device based on trabeculectomy, which aims to automatically adjust the size of the drainage channel according to the individual differences of the patient and the degree of inflammatory response, thereby maintaining a long-term stable drainage effect, reducing the risk of complications, and protecting the patient's visual function.

[0006] To achieve the above-mentioned objectives, the technical solution of the present invention is as follows: a drainage assist device based on trabeculectomy, comprising a support membrane, the support membrane being positioned below the patient's scleral flap during surgery, an anchoring ring being fixedly connected to one side of the support membrane, an intraocular pressure drainage membrane being provided on the top of the support membrane, the intraocular pressure drainage membrane comprising a front adjustment block close to the anchoring ring and a rear adjustment block away from the anchoring ring, both the front adjustment block and the rear adjustment block being elastic, an aperture adjustment component being provided on a side of the front adjustment block close to the anchoring ring, and a flow adjustment component being provided in the rear adjustment block that is connected to a corresponding flow adjustment component, wherein when the intraocular pressure of the patient's eye changes after surgery, the aperture adjustment component correspondingly adjusts the drainage flow aperture, and the flow adjustment component correspondingly adjusts the flow path of aqueous humor drainage;

[0007] The flow regulating components in the rear regulating block are coated with a hydrophobic coating. When the aqueous humor flows through the flow regulating components, the hydrophobic coating reduces the friction between impurities in the aqueous humor and the flow regulating components.

[0008] The technical principles of this solution are as follows: A support membrane and anchoring ring securely secure the device beneath the patient's scleral flap, ensuring its stability and durability. The design of the intraocular pressure drainage membrane fully considers the dynamic changes in intraocular pressure experienced by patients after surgery. The elastic design of the anterior and posterior adjustment blocks enables adaptive adjustment based on changes in intraocular pressure. In particular, the synergistic effect of the aperture adjustment component and the flow adjustment component enables automatic adjustment of the drainage channel size and aperture. The hydrophobic coating applied to the flow adjustment component reduces friction between impurities in the aqueous humor and the flow adjustment component, ensuring smooth drainage.

[0009] The above scheme has the following beneficial effects:

[0010] 1. In this solution, the aperture adjustment component of the front adjustment block and the flow adjustment component of the rear adjustment block work together to automatically adjust the drainage aperture and path according to postoperative intraocular pressure fluctuations, ensuring that the aqueous humor drainage volume matches the intraocular pressure in real time, avoiding the problem of excessive or insufficient drainage caused by fixed apertures in traditional devices.

[0011] 2. In this solution, the design of the hydrophobic coating has the characteristics of low surface energy, which enables the aqueous humor to form a high contact angle in the channel, resulting in a discontinuous wetting state between the liquid molecules and the wall surface, weakening the van der Waals force and hydrogen bonding, reducing adhesion energy, lowering the friction between aqueous humor impurities and the channel, inhibiting protein deposition and cell adsorption, and ensuring the long-term patency of the drainage channel.

[0012] 3. In this solution, the elastic front and rear adjustment blocks are combined with the fixed design of the support membrane and anchoring ring to ensure that the device fits tightly with the scleral flap, resist deformation caused by tissue contraction or inflammation, and maintain the geometric stability of the drainage path.

[0013] Furthermore, the aperture adjustment component includes several adjustment holes opened on the side wall of the front adjustment block. The adjustment holes are all star-shaped structures with vertical arm length greater than horizontal arm width. Under the force of changes in intraocular pressure, several adjustment holes deform to adjust the flow area.

[0014] Beneficial effects: The asymmetric structure in which the vertical arm length is greater than the horizontal arm width enables the adjustment hole to respond preferentially to the vertical force of the intraocular pressure. When the intraocular pressure changes, the aperture is expanded by directional stretching to achieve a linear match between the flow area and the intraocular pressure. The adjustment sensitivity is improved compared to the circular hole, avoiding the risk of insufficient or excessive drainage efficiency caused by the traditional fixed aperture, and reducing the range of intraocular pressure fluctuation after surgery.

[0015] Furthermore, the flow regulating component includes a plurality of drainage channels correspondingly connected to the regulating through holes, and the drainage channels are all channels with a serpentine structure.

[0016] Beneficial effects: The serpentine channel design stretches into a straight shape under high pressure, shortening the flow path and reducing fluid resistance. Combined with the slip boundary effect of the hydrophobic coating, it increases the flow rate while suppressing the generation of turbulent vortices and reducing impurity deposition.

[0017] Furthermore, the plurality of adjustment through holes are divided into a plurality of main drainage holes and buffer through holes. The plurality of main drainage holes are concentrated in the center of the side wall of the front adjustment block, and the plurality of buffer through holes are radially distributed around the center of the side wall.

[0018] Beneficial effects: The main drainage holes centrally drain the main aqueous humor to form a core laminar flow, and the buffer holes are radially distributed to divert part of the aqueous humor to form a low-speed surrounding flow, inhibiting the vortex at the entrance of the main drainage holes and dispersing the pressure gradient, preventing local negative pressure from causing tissue adsorption or cavitation, and improving flow stability.

[0019] Furthermore, the cross-sectional area of the main drainage through hole is larger than the cross-sectional area of the buffer through hole.

[0020] Beneficial effects: The design in which the cross-sectional area of the main drainage pore is larger than that of the buffer pore gives priority to the discharge of high-pressure aqueous humor. The buffer pore fills the pressure vacuum through elastic delayed response, avoiding flow oscillation caused by the siphon effect, and improving the drainage efficiency compared with the single-aperture design.

[0021] Furthermore, the inner edge walls of the main drainage holes are provided with temperature-changing layers, which are made of temperature-changing materials with a phase change temperature of 32-34°C.

[0022] Beneficial effects: With this design, when the corneal temperature of patients in the inflammatory stage decreases, the expansion of the thermovariable layer exerts lateral pressure on the main drainage hole, limiting excessive drainage; at normal body temperature, the expansion of the thermovariable layer exerts vertical pressure on the main drainage hole, increasing the drainage aperture, realizing the "temperature-intraocular pressure" dual-factor adaptive regulation and reducing the incidence of postoperative hypotony.

[0023] Furthermore, the bottom surface of the support membrane and the outer wall of the anchoring ring are both covered with a drug-loading layer, and the drug-loading layer is used to release drugs that inhibit fibroblast migration.

[0024] Beneficial effects: The drug-loaded layer releases anti-fibrotic drugs in stages through enzyme response and pH response. Compared with systemic administration, the local drug concentration is improved, the inhibition rate of fibroblast activity is increased, the risk of scarring is reduced, and the incision healing period is shortened.

[0025] Furthermore, a fixing layer is embedded in the supporting membrane, and the rigidity of the fixing layer is greater than the rigidity of the front adjustment block or the rear adjustment block.

[0026] Beneficial effects: The design of embedding the fixing layer into the supporting membrane limits the deformation range of the elastic front and rear adjustment blocks, prevents channel dislocation or closure caused by tissue contraction, improves the biological fixation strength, and reduces the displacement risk of the device.

[0027] Furthermore, a plurality of drug-releasing needles are fixedly connected to the bottom of the anchoring ring, and the drug-releasing needles are all filled with anti-scar drugs.

[0028] Beneficial effects: During surgery, the drug-releasing needle follows the anchoring ring and penetrates into the scleral stroma. The initial surface diffusion covers the acute inflammatory period. In the middle stage, the drug-releasing needle degrades some pores, accelerating the release to match the peak of scar hyperplasia, improving drug delivery efficiency, and inhibiting collagen deposition.

[0029] Furthermore, the drug-releasing needle is made of a biocompatible and non-toxic degradable material.

[0030] Beneficial effects: With this design, the drug-releasing needle will dissolve in the patient's sclera after a period of time, leaving no toxic residue, avoiding secondary surgery for removal, reducing the patient's pain, and lowering the incidence of postoperative foreign body reactions.

[0031] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the overall structure of an embodiment of a drainage assist device based on trabeculectomy according to the present invention;

[0033] Figure 2 A lateral cross-sectional view of a rear adjustment block in an embodiment of a drainage assist device based on trabeculectomy of the present invention;

[0034] Figure 3 A front view of a front adjustment block in an embodiment of a drainage assist device based on trabeculectomy of the present invention;

[0035] Figure 4An axonometric view of an anchoring ring in an embodiment of a trabeculectomy-based drainage assist device of the present invention;

[0036] Figure 5 It is a side cross-sectional view of a support membrane in an embodiment of the drainage assist device based on trabeculectomy of the present invention.

[0037] The figure marks in the drawings of the specification include: 1. support membrane; 2. anchoring ring; 3. intraocular pressure drainage membrane; 301. front adjustment block; 302. rear adjustment block; 4. adjustment through hole; 401. main drainage through hole; 402. buffer through hole; 5. drainage channel; 6. drug-carrying layer; 7. drug-releasing needle; 8. fixing layer. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0039] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0041] The following is further described in detail through specific implementation methods:

[0042] Example 1:

[0043] As attached Figure 1 、 Figure 2 and Figure 3As shown: A drainage auxiliary device based on trabeculectomy, including a support membrane 1, one side of which is fixedly connected to an anchoring ring 2. After the scleral flap is cut during the trabeculectomy operation, the anchoring ring 2 is inserted into the scleral incision, and the support membrane 1 is naturally laid flat under the scleral flap. An intraocular pressure drainage membrane 3 is provided on the top of the support membrane 1. The intraocular pressure drainage membrane 3 includes a front adjustment block 301 close to the anchoring ring 2 and a rear adjustment block 302 away from the anchoring ring 2. The front adjustment block 301 is provided with a plurality of adjustment holes 4 on a side close to the anchoring ring 2, and the rear adjustment block 302 is provided with a plurality of drainage channels 5 corresponding to the adjustment holes 4. Both the front adjustment block 301 and the rear adjustment block 302 are elastic. After the operation, the aqueous humor of the patient's eye penetrates from the anterior chamber through the bottom of the scleral flap into the surface of the support membrane 1, enters the drainage channel 5 through the adjustment hole 4 of the front adjustment block 301, and is discharged to the subconjunctival space through the drainage channel 5 and absorbed by the surrounding capillaries and lymphatic system.

[0044] The regulating through holes 4 are all star-shaped structures with vertical arm length greater than horizontal arm width. When the patient's intraocular pressure rises, the pressure under the scleral flap acts on the regulating through hole 4. The vertical long arm of the star-shaped structure has a higher elongation in the vertical direction (the direction of intraocular pressure action), while the horizontal short arm has a narrower width and a smaller horizontal constraint force. Therefore, when the intraocular pressure rises, the vertical arm is elastically compressed first, driving the star-shaped hole as a whole to expand in the vertical direction, forming a "cracking" opening effect, and expanding the through hole area; the drainage channels 5 are all channels with a serpentine structure. When the patient's intraocular pressure rises, the rear regulating block 302 is subjected to vertical squeezing pressure. At this time, the serpentine channel, which was originally periodically curved, is stretched into an approximately straight shape under the squeezing of the intraocular pressure. Since the squeezing force on the eye is small, it is difficult to cause squeezing of the channel flow area. Therefore, only the flow path of the aqueous humor is shortened, and the fluid resistance of the aqueous humor circulation is reduced. Combined with the design of the front regulating block 301 and the rear regulating block 302, the intraocular pressure energy can be efficiently converted into aperture expansion kinetic energy, thereby achieving linear matching between drainage efficiency and intraocular pressure.

[0045] The inner walls of the drainage channel 5 are coated with a hydrophobic coating made of polytetrafluoroethylene. This coating has low surface energy, allowing the aqueous humor to form discontinuous wetting within the channel. This reduces the adhesion between the liquid molecules and the coating, allowing the aqueous humor to generate molecular slip velocity as it passes near the wall. This reduces frictional energy loss between the fluid and the wall, lowers frictional resistance in laminar flow, and inhibits the formation of turbulent boundary layers (in curved or variable diameter sections). Furthermore, its hydrophobicity blocks capillary adsorption, preventing the adsorption and deposition of macromolecules such as proteins and lipids in the aqueous humor on the inner walls of the channel. This prevents increased secondary resistance due to biofouling and reduces the probability of drainage blockage.

[0046] In particular, such as Figure 3As shown, several adjustment holes 4 are divided into several main drainage holes 401 and buffer holes 402. Several main drainage holes 401 are concentrated in the center of the side wall of the front adjustment block 301, and several buffer holes 402 are radially distributed around the center of the side wall. The area of the main drainage holes 401 is larger than that of the buffer holes 402. Due to the arrangement and area design of the main drainage holes 401, they carry the main aqueous humor drainage volume. When the aqueous humor passes through the main drainage holes 401, a stable core laminar flow area is formed to ensure efficient drainage; and the radial buffer holes 402 form a low-speed surrounding flow around the core flow by diverting excess aqueous humor. The low momentum characteristic suppresses the vortex generation at the entrance of the main drainage hole 401 and reduces the intensity of turbulence. In addition, the buffer holes 402 can diffuse the high-pressure area in the center of the main drainage hole 401 through multi-directional diversion, reduce the overall pressure gradient, and avoid tissue adsorption or cavitation caused by local negative pressure. In addition, when the intraocular pressure rises, the expansion rate of the main drainage holes 401 will be greater than the expansion rate of the buffer holes 402, and several main drainage holes 401 will release high pressure first; the buffer holes 402 will respond by delaying elastic deformation to fill the pressure vacuum after the main drainage holes 401 flow through, prevent flow oscillation caused by the siphon effect, and maintain drainage stability. In this design, the high flow of the main drainage holes 401 and the flow field optimization of the buffer holes 402 are coordinated, and the overall drainage efficiency is improved compared with the single aperture design. The graded aperture design can disperse the risk of pollutant deposition, and combined with the suppression of eddy currents by the buffer holes 402, the long-term patency rate in the drainage channel 5 is improved, the mechanical stimulation to the surrounding tissues is reduced, and the incidence of postoperative inflammation is reduced.

[0047] In addition, the inner edge wall of the main drainage flow hole 401 is provided with a temperature-changing layer 9, and the temperature-changing layer 9 is made of a temperature-changing material. The temperature-changing material is preferably poly N-isopropyl acrylamide, and the phase change temperature of this material is 32°C (under normal circumstances, the corneal surface temperature is 34°C). When the corneal surface temperature is greater than 32°C, the temperature-changing layer 9 contracts, so that the aperture of the main drainage flow hole 401 is expanded, and the area of the main drainage flow hole 401 for flowing aqueous humor is promoted; and when the corneal surface temperature is less than or equal to 32°C (the corneal surface temperature during the postoperative inflammatory period is usually less than 30°C): the temperature-changing layer 9 expands, and the main drainage flow hole 401 will contract due to lateral pressure, thereby limiting excessive loss of aqueous humor and avoiding affecting intraocular pressure.

[0048] Example 2:

[0049] As attached Figure 1As shown, the difference from Example 1 is that the bottom surface of the support membrane 1 and the outer wall of the anchoring ring 2 are covered with a drug-loaded layer 6, and the drug-loaded layer 6 is preferably a silk fibroin drug-loaded layer 6. On the one hand, the drug-loaded layer 6 continuously releases drugs, inhibits the migration and proliferation of fibroblasts, reduces the risk of scarring under the scleral flap after surgery, and reduces the impurity content in the aqueous humor, maintaining long-term drainage patency; on the other hand, the release of drugs can promote the adhesion and migration of surrounding epithelial cells, accelerate the healing cycle of the scleral flap incision, and reduce the risk of postoperative infection.

[0050] Example 3:

[0051] As attached Figure 4 As shown, the difference from Example 2 is that a plurality of drug-releasing needles 7 fused to the anchoring ring 2 are provided at the bottom of the anchoring ring 2. The drug-releasing needles 7 are all made of degradable PLGA and filled with anti-scar drugs. When the anchoring ring 2 is anchored at the scleral incision during surgery, the drug-releasing needles 7 will penetrate the scleral matrix and release the anti-scar drugs to the surrounding tissues. After the drug-releasing needles 7 penetrate the scleral matrix during surgery, the PLGA material will gradually hydrolyze with the infiltration of body fluids, and the anti-scar drugs will be continuously released through the dual mechanisms of diffusion and matrix degradation. In the early stage (0-4 weeks), surface diffusion is dominant, covering the acute inflammatory period after surgery; in the middle stage (4-12 weeks), the internal porosity of PLGA increases, and the drug release rate is improved to match the peak period of scar hyperplasia; in the late stage (>12 weeks), PLGA is completely degraded, and the residual drug amount is <1%. The needle tip of the drug-releasing needle 7 adopts a conical micro-puncture design to ensure that the penetration depth reaches the middle layer of the scleral matrix, directly targeting the fibroblast-rich area, improving the local drug concentration and drug efficacy compared to systemic administration, and inhibiting excessive collagen deposition.

[0052] Example 4:

[0053] As attached Figure 5 As shown, the difference from Example 3 is that a fixing layer 8 is embedded in the support membrane 1, and the rigidity of the fixing layer 8 is greater than the rigidity of the front adjustment block 301 or the rear adjustment block 302. The fixing layer 8 is preferably a titanium alloy microgrid. The fixing layer 8 is embedded in the support membrane 1 as a rigid skeleton. After implantation during surgery, it fits tightly with the scleral flap to inhibit the displacement or curling of the support membrane 1 after surgery; the elastic deformation of the front adjustment block 301 and the rear adjustment block 302 are both limited to the preset deformation range of the fixing layer 8, ensuring the geometric stability of the drainage channel 5, and avoiding the drainage channel 5 and the main drainage through hole 401 or the buffer through hole 402 misalignment or closure due to tissue contraction.

[0054] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A drainage assist device based on trabeculectomy, comprising a support membrane (1), the support membrane (1) being located below the scleral flap of the patient during the operation, characterized in that: An anchoring ring (2) is fixedly connected to one side of the support membrane (1), and an intraocular pressure drainage membrane (3) is provided on the top of the support membrane (1). The intraocular pressure drainage membrane (3) comprises a front adjustment block (301) close to the anchoring ring (2) and a rear adjustment block (302) away from the anchoring ring (2). Both the front adjustment block (301) and the rear adjustment block (302) are elastic. An aperture adjustment component is provided on the side of the front adjustment block (301) close to the anchoring ring (2), and a flow adjustment component corresponding to the flow adjustment component is provided in the rear adjustment block (302). When the intraocular pressure of the patient's eye changes after surgery, the aperture adjustment component correspondingly adjusts the drainage flow aperture, and the flow adjustment component correspondingly adjusts the flow path of aqueous humor drainage. The flow regulating components in the rear regulating block (302) are coated with a hydrophobic coating. When the aqueous humor flows through the flow regulating components, the hydrophobic coating reduces the friction between impurities in the aqueous humor and the flow regulating components.

2. The drainage assist device based on trabeculectomy according to claim 1, characterized in that: The aperture adjustment component comprises a plurality of adjustment through holes (4) provided on the side wall of the front adjustment block (301). The adjustment through holes (4) are all star-shaped structures with a vertical arm length greater than a horizontal arm width. Under the action of changes in intraocular pressure, the plurality of adjustment through holes (4) are deformed to adjust the flow area.

3. The drainage assist device based on trabeculectomy according to claim 2, characterized in that: The flow regulating component comprises a plurality of drainage channels (5) correspondingly connected to the regulating through holes (4), and the drainage channels (5) are all channels with a serpentine structure.

4. The drainage assist device based on trabeculectomy according to claim 2, characterized in that: The plurality of regulating through holes (4) are divided into a plurality of main drainage holes (401) and buffering through holes (402). The plurality of main drainage holes (401) are concentratedly distributed in the center of the side wall of the front regulating block (301), and the plurality of buffering through holes (402) are radially distributed around the center of the side wall.

5. The drainage assist device based on trabeculectomy according to claim 4, characterized in that: The cross-sectional area of the main drainage through hole (401) is greater than the cross-sectional area of the buffer through hole (402).

6. The drainage assist device based on trabeculectomy according to claim 1, characterized in that: The inner edge wall of the main drainage flow hole (401) is provided with a temperature-changing layer (9), and the temperature-changing layer (9) is made of a temperature-changing material, and the phase change temperature of the temperature-changing material is 32-34°C.

7. The drainage assist device based on trabeculectomy according to claim 1, characterized in that: The bottom surface of the support membrane (1) and the outer wall of the anchoring ring (2) are both covered with a drug-carrying layer (6), and the drug-carrying layer (6) is used to release drugs that inhibit fibroblast migration.

8. The drainage assist device based on trabeculectomy according to claim 1, characterized in that: A fixing layer (8) is embedded in the supporting film (1), and the rigidity of the fixing layer (8) is greater than the rigidity of the front adjustment block (301) or the rear adjustment block (302).

9. The drainage assist device based on trabeculectomy according to claim 1, characterized in that: A plurality of drug-releasing needles (7) are fixedly connected to the bottom of the anchoring ring (2), and the drug-releasing needles (7) are all filled with anti-scar drugs.

10. The drainage assist device based on trabeculectomy according to claim 9, characterized in that: The drug-releasing needle (7) is made of a biocompatible and non-toxic degradable material.

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