A reverse glaucoma filtration bleb scar probe

Abstract

The invention discloses a reverse glaucoma filtering bleb scar probe, comprising a needle stem in an arc shape and bendable into any arc, the specification of the needle stem is 24G to 26G, an axe-shaped blade is arranged at the needle tip, the bevel of the needle tip is flush with the blade surface of one side of the blade, and a needle plug is arranged at the tail of the needle stem for connecting with a syringe barrel containing a viscoelastic agent. After the filtering bleb of glaucoma trabeculectomy loses its function, reverse scar separation can be performed through a limbal incision through the anterior chamber, the needle plug is connected to the syringe, and the syringe is used as a handle during separation, the needle stem is bent into any arc to change the separation direction, and a wide separation can be performed through a tiny limbal incision, the axe-shaped blade is in linear contact with the scar tissue, the separation surface is relatively smooth, and the viscoelastic agent can be injected while separating to avoid causing new damage, and a trabecular surgery can be ensured once, and the reverse separation with the probe is timely used to maintain the filtering function for life, avoid multiple surgeries, and reduce the pain of patients.

Description

Technical Field

[0001] The invention relates to the technical field of glaucoma surgery, and more particularly to a reverse glaucoma filtering bleb scar probe. Background Art

[0002] Glaucoma trabeculectomy is the most classic glaucoma surgery method. Its disadvantage is that scar tissue is easily proliferated under the scleral flap and conjunctival flap, which causes the filtering bleb to lose its function.

[0003] The commonly used solution is to use needle separation, that is, to pierce the conjunctiva from the conjunctival surface and sharply separate the scar tissue under the conjunctiva and under the scleral flap. The disadvantage of this method is that it is easy to cause bleeding under the conjunctival flap and scleral flap, causing new injuries, and may also damage the conjunctiva and scleral flap, thereby leading to more serious scar hyperplasia, and having to change the position and perform another surgery.

[0004] Therefore, how to solve the problem of easily causing new damage during the process of separating scar tissue is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a reverse glaucoma filtering bleb scar probe, which has a relatively smooth separation surface, is not easy to cause new damage and filtering bleb leakage, and has a wide separation surface and good separation effect.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A reverse glaucoma filtering bleb scar probe comprises an arc-shaped needle stem that can be bent into any arc, the specification of the needle stem is 24G to 26G, an axe-shaped blade is arranged at the needle tip of the needle stem, the inclined surface of the needle tip is flush with the blade surface of one side of the blade, and a needle plug is arranged at the tail of the needle stem, and the needle plug is used to connect with the nipple of a syringe barrel filled with a viscoelastic agent.

[0008] Preferably, the outer diameter of the needle stem is 0.4-0.6 mm.

[0009] Preferably, the needle stem is a stainless steel needle stem.

[0010] Preferably, the length of the needle stem is 23-28 mm.

[0011] Preferably, the width of the blade surface of the blade increases from the tip to the middle and then decreases from the middle to the tail, and the maximum width of the blade surface is 1.1-1.3 mm.

[0012] Preferably, the thickness of the thickest part of the blade is 0.5-0.7 mm.

[0013] The reverse glaucoma filtering bleb scar probe provided by the present invention has the following beneficial effects:

[0014] After the filtering bleb of glaucoma trabeculectomy loses its function, the probe can be used for reverse scar separation through the anterior chamber through the corneal limbus incision. The probe includes three parts: an axe-shaped blade, a needle stem, and a needle plug. The needle plug needs to be connected to the nipple of a syringe barrel filled with viscoelastic, and the syringe filled with viscoelastic is used as the handle of the probe. The needle stem is a hollow needle stem that can be bent into any arc, with specifications ranging from 24G to 26G. The bendable needle stem is convenient for changing the separation direction to ensure that the probe can perform extensive subconjunctival separation through a tiny corneal limbus incision.

[0015] The needle tip opening of the needle stem directly reaches the blade of the axe-shaped blade, and the bevel of the needle tip opening is flush with the blade surface on one side of the blade. In the process of separating scar tissue, the axe-shaped blade is in linear contact with the scar tissue, separating the sclera from the scar tissue, and the separation surface is relatively smooth. Scar tissue regeneration is slow after separation; because there is a viscoelastic agent in the syringe, the viscoelastic agent can be injected while separating during the separation process, which is conducive to forming a subvalvular space during separation and avoiding the disappearance of the anterior chamber, and is not easy to cause new damage, making the separation process safe, simple and effective; therefore, after the glaucoma external filtration surgery, the reverse separation can be performed with this probe in time, which can ensure a single trabecular external filtration surgery and maintain the filtration function for life, avoiding multiple surgeries in different parts and reducing the pain of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a front schematic diagram of a specific embodiment of the reverse glaucoma filtering bleb scar probe provided by the present invention;

[0018] Figure 2 A side schematic diagram of a specific embodiment of the reverse glaucoma filtering bleb scar probe provided by the present invention;

[0019] Figure 3 It is a schematic diagram of the back side of a specific embodiment of the reverse glaucoma filtering bleb scar probe provided by the present invention;

[0020] Figure 4 for Figure 1 An enlarged schematic diagram of the middle blade portion.

[0021] Among them, 1-needle stem, 2-blade, 3-needle plug, 4-needle tip. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The core of the present invention is to provide a reverse glaucoma filtering bleb scar probe, which has a relatively smooth separation surface, is not prone to new damage and filtering bleb leakage, has a wide separation surface, and has a good separation effect.

[0024] Please refer to Figures 1 to 4 , Figure 1 It is a front schematic diagram of a specific embodiment of the reverse glaucoma filtering bleb scar probe provided by the present invention; Figure 2 A side schematic diagram of a specific embodiment of the reverse glaucoma filtering bleb scar probe provided by the present invention; Figure 3 It is a schematic diagram of the back side of a specific embodiment of the reverse glaucoma filtering bleb scar probe provided by the present invention; Figure 4 for Figure 1 An enlarged schematic diagram of the middle blade portion.

[0025] The reverse glaucoma filtering bleb scar probe provided by the present invention comprises a needle stem 1 which is arc-shaped and can be bent into any arc, the specification of the needle stem is 24G to 26G, an axe-shaped blade 2 is arranged at the needle tip 4 of the needle stem 1, the inclined surface of the needle tip 4 is flush with the blade surface of one side of the blade 2, and a needle plug 3 is arranged at the tail of the needle stem 1, and the needle plug 3 is used to connect with the nipple of the syringe barrel filled with viscoelastic agent.

[0026] Among them, the needle stem 1 is an arc-shaped long and thin tube, and the needle stem 1 can be bent into any curvature as needed. Specifically, the material of the needle stem 1 can be stainless steel used for disposable injection needles. Since the tube used in the present invention can be bent into any curvature, the needle stem 1 should have the characteristics of small diameter and flexibility so that it can be bent into different curvatures. Specifically, the material of the needle stem 1 can be stainless steel used for disposable injection needles. Due to its small diameter and flexibility, it is easy to operate to bend into different angles.

[0027] It should be pointed out that the needle stem 1 must be able to be bent at will and have a certain rigidity, so it cannot be too thick or too thin. If it is too thick, it cannot be bent and the angle cannot be changed at will, making it impossible to separate the scar under the conjunctiva. If it is too thin, it is not conducive to the rapid injection of the viscoelastic agent, and it cannot maintain a certain rigidity and cannot ensure the transmission of force during separation.

[0028] The specification of the needle stem 1 is 24-26G needle stem 1. Preferably, the specification of the needle stem 1 is 25G. The specification of the needle stem 1 should not be too large or too small. If it is too small, it will not be conducive to the injection of the viscoelastic agent. If it is too large, the cutting edge of the blade 2 will be too thick, which is not conducive to the separation of the scar.

[0029] The blade 2 is axe-shaped, and the axe-shaped blade 2 has an arc-shaped linear separation portion, that is, the axe-shaped blade 2 is in linear contact with the scar tissue during the process of separating the scar tissue. Compared with the sharp separation method of acupuncture separation in the prior art, the linear contact axe-shaped blade 2 has the characteristics of blunt separation, and the separation surface is relatively smooth. It is gentler in the process of separating the scar tissue and is not easy to cause new damage. The separation surface of the axe-shaped blade 2 is wider and the separation effect is better.

[0030] When using it, a tiny 1.5mm corneal limbal incision is made, and viscoelastic is injected into the anterior chamber. Blunt separation is started from the inner opening of the filter port. The scleral suture can also be broken. The scar tissue under the scleral flap is separated first, and then the scar tissue under the conjunctiva is separated. When separating the scar tissue under the conjunctiva, it is separated close to the sclera. While separating, the viscoelastic is injected through the syringe. This is conducive to separation and can prevent the disappearance of the anterior chamber, forming a space under the flap, which is convenient for separation. It is best to operate under a microscope under a gonioscope. If there is no gonioscope used in the operation, the operation can also be performed. Before the operation, an ordinary gonioscope can be used to check the inner opening of the filter, and the separation can be guided by the position of the iris peri-incision.

[0031] The reverse glaucoma filtering bleb scar probe provided by the present invention has the following beneficial effects:

[0032] First, the axe-shaped blade 2 is in linear contact with the scar tissue during the separation process. Compared with the sharp separation method of acupuncture separation in the prior art, the linear contact axe-shaped blade 2 has the characteristics of blunt separation, and the separation surface is relatively smooth, which is gentler during the separation process of scar tissue. The needle tip 4 is flush with the blade surface of the blade 2, so the tissue will not be scratched during the separation process, and it is not easy to cause new damage;

[0033] Second, the needle plug 1 is connected to the nipple of the syringe barrel filled with viscoelastic agent, and the viscoelastic agent can be injected through the syringe barrel during the separation process, which is beneficial to the separation and can prevent the anterior chamber from disappearing, forming a subvalvular space, which is convenient for separation;

[0034] Third, because the needle stem 1 can be bent into any arc, it ensures that the instrument can cut into the anterior chamber with a 1.5mm incision, and can also bypass the inner opening of the trabeculectomy surgery, which is only about 2mm, and separate the subconjunctival scar from different angles without making a conjunctival incision, thus protecting the conjunctival tissue that is particularly important in glaucoma surgery and avoiding repeated trabeculectomy surgery. One trabeculectomy surgery can be lifelong. In addition, the arc-shaped needle stem 1 can drive the blade 2 to perform fan-shaped separation, with a wider separation surface and higher separation efficiency.

[0035] Fourth, the reverse glaucoma filtering bleb scar probe provided by the present invention performs reverse separation from the inside of the eyeball through the anterior chamber from the inner filter opening during the treatment of the scleral flap and subconjunctival scar tissue after glaucoma trabecular surgery. The separation surface is wide, and the scleral surface is smooth after separation, without damaging the conjunctiva, with less bleeding and slow scar tissue regeneration, especially when treating fresh scar tissue. The biggest advantage of the application of this instrument is that it avoids the need for multiple trabeculectomy surgeries at different parts of the eyeball after the failure of glaucoma external filtration surgery; with this instrument, it can be ensured that a glaucoma patient only undergoes one trabecular surgery, and this simple and safe reverse probing technique can be combined with the surgery in time to maintain the filtering function for life, reducing the patient's pain.

[0036] On the basis of the above embodiment, considering the specific size setting of the needle stem 1, as a preferred embodiment, the outer diameter of the needle stem 1 is 0.4-0.6mm. Specifically, the outer diameter of the needle stem 1 can be 0.5mm. On the basis of the above embodiment, considering the specific size setting of the length of the needle stem 1, as a preferred embodiment, the length of the needle stem 1 is 23-28mm, and specifically, the length of the needle stem 1 can be 25mm. Considering the specific selection of the material of the needle stem 1, as a preferred embodiment, the needle stem 1 is a stainless steel needle stem.

[0037] In this embodiment, the needle stem 1 is a stainless steel needle stem 1 used in a disposable injection needle. The outer diameter of the needle stem 1 is 0.5 mm and the length of the needle stem 1 is 25 mm, so as to ensure that the needle stem 1 can be bent at will and has a certain rigidity to ensure the transmission of force during separation and enable rapid injection of viscoelastic agent.

[0038] On the basis of the above embodiment, considering the specific size setting of the blade 2, as a preferred embodiment, the width of the blade surface of the blade 2 increases from the tip to the middle, and then decreases from the middle to the tail, and the maximum width of the blade surface is 1.1-1.3mm. Specifically, the maximum width of the blade 2 is 1.2mm. On the basis of the above embodiment, considering the specific size setting of the thickness of the blade 2, as a preferred embodiment, the thickness of the thickest part of the blade 2 is 0.5-0.7mm. Specifically, the thickness of the thickest part of the blade 2 is 0.6mm. Considering the specific size setting of the length of the blade 2, as a preferred embodiment, the length of the blade 2 is 1.5mm.

[0039] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0040] The above is a detailed introduction to the reverse glaucoma filtering bleb scar probe provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A reverse glaucoma filtration bleb scar probe, characterized in that: The invention comprises a needle stem (1) which is arc-shaped and can be bent into any arc, the specification of the needle stem is 24G to 26G, an axe-shaped blade (2) is provided at the needle tip (4) of the needle stem (1), the inclined surface of the needle tip (4) is flush with the blade surface of one side of the blade (2), and a needle plug (3) is provided at the tail of the needle stem (1), and the needle plug (3) is used to connect with the nipple of a syringe barrel containing a viscoelastic agent; The blade (2) is axe-shaped, and the axe-shaped blade (2) has an arc-shaped linear separation portion.

2. The reverse glaucoma filtering bleb scar probe according to claim 1, characterized in that: The outer diameter of the needle stem (1) is 0.4-0.6 mm.

3. The reverse glaucoma filtration bleb scar probe according to claim 2, characterized in that: The needle stem (1) is a stainless steel needle stem.

4. The reverse glaucoma filtering bleb scar probe according to claim 3, characterized in that: The length of the needle stem (1) is 23-28 mm.

5. The reverse glaucoma filtering bleb scar probe according to any one of claims 1 to 4, characterized in that: The width of the blade surface of the blade (2) increases from the tip to the middle and then decreases from the middle to the tail, and the maximum width of the blade surface is 1.1-1.3 mm.

6. The reverse glaucoma filtering bleb scar probe according to claim 5, characterized in that: The thickness of the blade (2) at its thickest point is 0.5-0.7 mm.

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