Novel lacrimal passage drainage tube

Abstract

The utility model discloses a novel lacrimal passage drainage tube, which belongs to the technical field of ophthalmologic operation instruments and comprises a lacrimal passage tube, a lacrimal passage hole is arranged in the lacrimal passage tube, and a first step, a second step, a third step, a fourth step, a fifth step, a sixth step and a seventh step are fixedly mounted at one end of the surface of the lacrimal passage tube at equal intervals. Drainage grooves are formed in the surface of the lacrimal passage tube and located among the first step, the second step, the third step, the fourth step, the fifth step, the sixth step and the seventh step which are adjacent. According to the novel lacrimal passage drainage tube, after the lacrimal passage tube is implanted into the nasolacrimal passage, secretions in the lacrimal passage and the nasal cavity flow into the lacrimal passage hole from the trumpet-shaped hole, meanwhile, hydrops in the lacrimal passage flow into the lacrimal passage hole from the drainage hole through the drainage groove and are discharged from the lacrimal passage hole together with the secretions flowing in from the trumpet-shaped hole, and the hydrops in the lacrimal passage and the nasal cavity are avoided; tear, accumulated water and secretions can be discharged in time, and infection can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of ophthalmic surgical instruments, in particular to a novel lacrimal duct drainage tube. Background Art

[0002] The tear duct drainage tube is a medical device used to treat tear duct diseases. It is suitable for the treatment of epiphora caused by damage, stenosis, obstruction or absence of the tear duct. The tear duct drainage tube is implanted into the tear duct, which can effectively avoid blockage of the nasolacrimal cyst anastomosis and support the lacrimal canaliculi and common lacrimal duct, thereby improving the success rate of the operation.

[0003] The existing tear duct drainage tube is only provided with a tear duct hole at the port, so that the accumulated fluid and secretions in the nasolacrimal duct cannot be discharged in time, which easily leads to water accumulation and infection. Therefore, improvement is needed. Utility Model Content

[0004] In order to overcome the above defects, the utility model provides a novel lacrimal duct drainage tube, which solves the problem that the existing lacrimal duct drainage tube only has a lacrimal duct hole at the port, so that the accumulated fluid and secretions in the nasolacrimal duct cannot be discharged in time, which easily leads to water accumulation and infection.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel lacrimal duct drainage tube, comprising a lacrimal duct tube, a lacrimal duct hole is arranged inside the lacrimal duct tube, a first step, a second step, a third step, a fourth step, a fifth step, a sixth step and a seventh step are fixedly installed at one end of the surface of the lacrimal duct tube at equal intervals, a drainage groove is arranged on the surface of the lacrimal duct tube between adjacent first steps, second steps, third steps, fourth steps, fifth steps, sixth steps and seventh steps, and four groups of drainage holes are arranged on the surface of the lacrimal duct tube at equal angles inside the drainage groove.

[0006] As a further solution of the utility model: the first step, the second step and the third step are fixed on the surface of the lacrimal duct at equal distances, and the diameters of the first step, the second step and the third step increase successively.

[0007] As a further solution of the utility model: the third step, the fourth step, the fifth step, the sixth step and the seventh step are equidistantly fixed on the surface of the lacrimal duct, and the diameters of the third step, the fourth step, the fifth step, the sixth step and the seventh step decrease in sequence.

[0008] As a further solution of the utility model: a trumpet hole is provided inside the tear duct tube at one end of the tear duct hole close to the first step, and the opening of the trumpet hole faces the side away from the first step.

[0009] As a further solution of the utility model: the tear duct tube, the first step, the second step, the third step, the fourth step, the fifth step, the sixth step and the seventh step are all made of silicone rubber.

[0010] As a further solution of the utility model: two circular chamfers are symmetrically provided on both sides of the surfaces of the first step, the second step, the third step, the fourth step, the fifth step, the sixth step and the seventh step, and one circular chamfer is provided on the surface of the tear duct tube at one end of the trumpet hole.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The novel tear duct drainage tube is provided with a drainage groove, a drainage hole, a tear duct hole and a trumpet hole. After the tear duct tube is implanted in the nasolacrimal duct, the secretions in the tear duct and the nasal cavity flow into the tear duct hole from the trumpet hole. At the same time, the accumulated water and fluid in the tear duct flows from the drainage hole to the tear duct hole through the drainage groove, and is discharged from the tear duct hole together with the secretions flowing in from the trumpet hole, thereby avoiding the accumulation of water and fluid in the tear duct and the nasal cavity, and timely discharging tears, accumulated water and secretions, which can effectively reduce the occurrence of infection.

[0013] 2. The new tear duct drainage tube is provided with a tear duct tube, a first step, a third step and a seventh step. The diameters of the first step, the second step and the third step increase successively, so that the tear duct tube is conveniently implanted into the nasolacrimal duct. Meanwhile, the third step is stuck in the nasolacrimal duct to prevent the tear duct tube from falling off. When the tear duct tube is pulled out of the nasolacrimal duct, the third step, the fourth step, the fifth step, the sixth step and the seventh step, whose diameters decrease successively, can facilitate the removal of the tear duct tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 For this utility model Figure 2 A schematic diagram of the three-dimensional enlarged structure at A in the middle;

[0017] In the figure: 1. tear duct; 2. tear duct hole; 3. first step; 4. second step; 5. third step; 6. fourth step; 7. fifth step; 8. sixth step; 9. seventh step; 10. drainage groove; 11. drainage hole; 12. trumpet hole; 13. round chamfer one; 14. round chamfer two. DETAILED DESCRIPTION

[0018] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0019] like Figure 1-3As shown, the utility model provides a technical solution: a novel lacrimal duct drainage tube, comprising a lacrimal duct tube 1, a lacrimal duct hole 2 is arranged inside the lacrimal duct tube 1, a trumpet hole 12 is arranged inside the lacrimal duct tube 1 at one end of the lacrimal duct hole 2 close to the first step 3, and the opening of the trumpet hole 12 faces the side away from the first step 3, and by providing the trumpet hole 12, the opening of the trumpet hole 12 faces the nasolacrimal duct, so that the secretions in the lacrimal duct and the nasal cavity flow through the trumpet hole 12 into the lacrimal duct hole 2 for discharge.

[0020] One end of the surface of the lacrimal duct tube 1 is equidistantly fixed with a first step 3, a second step 4, a third step 5, a fourth step 6, a fifth step 7, a sixth step 8 and a seventh step 9. The first step 3, the second step 4 and the third step 5 are equidistantly fixed on the surface of the lacrimal duct tube 1, and the diameters of the first step 3, the second step 4 and the third step 5 increase successively. Because the first step 3, the second step 4 and the third step 5 are provided, the gradually enlarged first step 3, the second step 4 and the third step 5 make it convenient to implant the lacrimal duct tube 1 into the nasolacrimal duct. At the same time, the third step 5 can be stuck in the nasolacrimal duct to prevent the lacrimal duct tube 1 from falling off at will.

[0021] The third step 5, the fourth step 6, the fifth step 7, the sixth step 8 and the seventh step 9 are equidistantly fixed on the surface of the lacrimal duct tube 1, and the diameters of the third step 5, the fourth step 6, the fifth step 7, the sixth step 8 and the seventh step 9 decrease successively. Because the third step 5, the fourth step 6, the fifth step 7, the sixth step 8 and the seventh step 9 are provided, the gradually decreasing third step 5, the fourth step 6, the fifth step 7, the sixth step 8 and the seventh step 9 make it convenient to remove the lacrimal duct tube 1 from the nasolacrimal duct.

[0022] Circular chamfers 14 are symmetrically provided on both sides of the surfaces of the first step 3, the second step 4, the third step 5, the fourth step 6, the fifth step 7, the sixth step 8 and the seventh step 9. A circular chamfer 13 is provided on the surface of the lacrimal duct tube 1 at one end of the trumpet hole 12. By providing the circular chamfer 13 and the circular chamfer 14, when the lacrimal duct tube 1 is implanted or removed, the nasolacrimal duct contacts the circular chamfer 13 and the circular chamfer 14, thereby reducing stimulation to the nasolacrimal duct and avoiding discomfort when the lacrimal duct tube 1 is implanted or removed, while also reducing inflammation and the production of lacrimal duct fluid.

[0023] A drainage groove 10 is provided on the surface of the lacrimal duct tube 1 between the adjacent first step 3, second step 4, third step 5, fourth step 6, fifth step 7, sixth step 8 and seventh step 9, and four groups of drainage holes 11 are provided at equal angles inside the drainage groove 10 on the surface of the lacrimal duct tube 1. Due to the drainage groove 10 and the drainage holes 11, the accumulated water and excrement in the nasolacrimal duct flow from the drainage groove 10 through the drainage holes 11 into the lacrimal duct hole 2 and are discharged from the lacrimal duct hole 2 in time, thereby reducing the occurrence of infection.

[0024] The tear duct tube 1, the first step 3, the second step 4, the third step 5, the fourth step 6, the fifth step 7, the sixth step 8 and the seventh step 9 are all made of silicone rubber. The tear duct tube 1 made of silicone rubber will produce a certain degree of deformation when implanted or removed, so that the tear duct tube 1 is easy to implant or remove.

[0025] The working principle of the utility model is:

[0026] When the lacrimal duct tube 1 is implanted into the nasolacrimal duct, the gradually enlarged first step 3, second step 4 and third step 5 gradually expand the nasolacrimal duct, thereby facilitating the implantation of the lacrimal duct tube 1 into the nasolacrimal duct until the third step 5 is stuck in the nasolacrimal duct, and the secretions in the nasolacrimal duct flow from the trumpet hole 12 into the lacrimal duct hole 2. At the same time, the secretions on the inner wall of the nasolacrimal duct flow from the drainage groove 10 to the drainage hole 11, and after mixing with the secretions flowing into the lacrimal duct hole 2 from the trumpet hole 12, they are discharged from the lacrimal duct hole 2. When the lacrimal duct tube 1 is removed, the gradually decreasing third step 5, fourth step 6, fifth step 7, sixth step 8 and seventh step 9 gradually expand the nasolacrimal duct, thereby facilitating the removal of the lacrimal duct tube 1 from the nasolacrimal duct.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A novel lacrimal duct drainage tube, comprising a lacrimal duct tube (1), characterized in that: The tear duct tube (1) is provided with a tear duct hole (2) inside, and one end of the surface of the tear duct tube (1) is equidistantly fixedly installed with a first step (3), a second step (4), a third step (5), a fourth step (6), a fifth step (7), a sixth step (8) and a seventh step (9), and the surface of the tear duct tube (1) is provided with a drainage groove (10) between adjacent first steps (3), second steps (4), third steps (5), fourth steps (6), fifth steps (7), sixth steps (8) and seventh steps (9), and the surface of the tear duct tube (1) is provided with four groups of drainage holes (11) at equal angles inside the drainage groove (10).

2. A novel lacrimal duct drainage tube according to claim 1, characterized in that: The first step (3), the second step (4) and the third step (5) are fixed on the surface of the lacrimal duct (1) at equal distances, and the diameters of the first step (3), the second step (4) and the third step (5) increase in sequence.

3. The novel lacrimal duct drainage tube according to claim 1, characterized in that: The third step (5), the fourth step (6), the fifth step (7), the sixth step (8) and the seventh step (9) are fixed on the surface of the lacrimal duct (1) at equal intervals, and the diameters of the third step (5), the fourth step (6), the fifth step (7), the sixth step (8) and the seventh step (9) decrease in sequence.

4. The novel lacrimal duct drainage tube according to claim 1, characterized in that: A trumpet hole (12) is provided inside the lacrimal duct tube (1) at one end of the lacrimal duct hole (2) close to the first step (3), and the opening of the trumpet hole (12) faces the side away from the first step (3).

5. The novel lacrimal duct drainage tube according to claim 1, characterized in that: The lacrimal duct tube (1), the first step (3), the second step (4), the third step (5), the fourth step (6), the fifth step (7), the sixth step (8) and the seventh step (9) are all made of silicone rubber.

6. The novel lacrimal duct drainage tube according to claim 4, characterized in that: Two round chamfers (14) are symmetrically provided on both sides of the surfaces of the first step (3), the second step (4), the third step (5), the fourth step (6), the fifth step (7), the sixth step (8) and the seventh step (9), and a round chamfer (13) is provided on the surface of the lacrimal duct tube (1) at one end of the trumpet hole (12).

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