A lacrimal duct support tube for draining tears implanted in a single lacrimal duct and its implantation method.

Abstract

This invention discloses a lacrimal duct support tube for single-ductal lacrimal drainage and its implantation method, relating to the field of medical device technology. It addresses the problem of lacrimal duct epiphora during use of existing lacrimal duct support tubes made of single-strand silicone tubing. The invention includes a lacrimal duct support tube body; and two wing-shaped structures disposed at the upper end of the lacrimal duct support tube body. The ends and inner sides of the two wing-shaped structures are connected by a silicone connecting strip. A cylindrical structure is integrally formed on the outer wall of the inner side of each wing-shaped structure, and the thickness of the wing-shaped structure is 0.05 mm. The lacrimal duct support tube body includes two columnar extension sections, a flat connecting section, and a connecting segment. The lower ends of the two columnar extension sections are connected by the flat connecting section.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a lacrimal duct support tube for single lacrimal duct implantation that can drain tears and its implantation method. Background Technology

[0002] Lacrimal duct stents are commonly used in clinical practice to treat conditions such as lacrimal duct obstruction, lacrimal canaliculus rupture, and chronic dacryocystitis.

[0003] Currently, all existing lacrimal duct support tubes or lacrimal duct drainage tubes are implanted as single cylindrical tubes. Commonly used tubes in China include RS tubes and Fr2 type tubes. The main drawbacks are: firstly, many require double lacrimal duct implantation, increasing unnecessary trauma and infection risks; secondly, during tube insertion, lacrimal duct obstruction leads to epiphora (excessive tearing). Although some researchers have recognized this problem and modified the support tube to a hollow design, the drainage effect is relatively mild because it also isolates the drainage force generated by muscle contraction.

[0004] Mini-Monoka and similar designs are commonly used abroad. This design avoids the drawbacks of the aforementioned double lacrimal duct intubation. However, due to the use of a single-strand silicone tube, lacrimal duct epiphora still occurs during tube insertion. Therefore, we provide a single lacrimal duct implantable lacrimal duct support tube that can drain tears and its implantation method. Summary of the Invention

[0005] The purpose of this invention is to provide a lacrimal duct support tube for single lacrimal duct implantation that can drain tears and its implantation method, so as to solve the problem mentioned in the background art that the existing lacrimal duct support tubes use a single-strand silicone tube and still have lacrimal duct epiphora symptoms during tube insertion.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a lacrimal duct support tube for single lacrimal duct implantation that can drain tears, comprising a lacrimal duct support tube body 1;

[0007] Also includes:

[0008] A wing-shaped structure is provided at the upper end of the lacrimal duct support tube body, and two wing-shaped structures are provided. The ends and inner sides of the two wing-shaped structures are connected by a silicone connecting strip. A cylindrical structure is provided on the outer wall of the inner side of the wing-shaped structure, and the cylindrical structure is integrally formed with the wing-shaped structure.

[0009] Preferably, the thickness of the wing-shaped structure is 0.05 mm.

[0010] Preferably, the lacrimal duct support tube body includes a columnar extension section, a flat connecting section, and a connecting section. There are two columnar extension sections, and the lower ends of the two columnar extension sections are connected by the flat connecting section. The connecting section is located at the upper end of the two columnar extension sections, and the columnar extension sections are connected to the cylindrical structure of the wing structure through the connecting section. The lacrimal duct support tube body is made of silicone.

[0011] Preferably, the diameter of the connection between the connecting segment and the cylindrical structure is 0.2 mm, and the connecting segment extends downwards for about 1.5-2 mm, gradually thickening to 0.5 mm.

[0012] Preferably, the flat connecting segment is 3mm long, 0.05mm thick, and 0.5mm wide.

[0013] Preferably, a folding structure is provided at the middle position of the flat connecting segment, and the folding structure is integrally formed with the flat connecting segment.

[0014] Preferably, a method for implanting a lacrimal duct support tube capable of draining tears into a single lacrimal duct includes the following steps:

[0015] Step 1: Before implantation, place the lacrimal duct support tube onto the implantation aid for later use;

[0016] Step 2: During implantation, hold the handle of the implantation aid and widen the lacrimal punctum in the usual way. Insert the lacrimal duct support tube through the lacrimal punctum, and after it enters the nasal cavity through the lacrimal canaliculus, lacrimal sac, and nasolacrimal duct, loosen the upper silicone connecting band and then extend it into the nasal cavity.

[0017] Step 3: After inserting and fine-tuning until satisfactory, rotate and retract the implantation aid while observing the condition of the lacrimal duct support tube. Once it stabilizes and does not retract, the implantation is successful. After completion, completely remove the implantation aid from the lacrimal duct system.

[0018] Preferably, the implantation aid in step one includes an implantation segment, a handle, and an enlarged end, with the handle installed at one end of the implantation segment and the enlarged end installed at the other end of the implantation segment.

[0019] Preferably, a positioning protrusion is provided on one side of the upper end of the implant segment, and an anti-slip texture is provided on the outer wall of the handle, and the anti-slip texture is integrally formed with the handle.

[0020] Preferably, the handle is 2-3 cm long and made of metal or PE material, and the implant segment is made of metal material.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention employs a single-stranded, double-silicone tube implantation structure. The upper end features a wing-shaped structure to stabilize the support tube and prevent it from dislodging into the lacrimal duct. The main body is a double-stranded, circular silicone tube, which facilitates lacrimal drainage during tube insertion, thus preventing epiphora. The lower end of the support tube has a membrane-like, flat structure for easy implantation into the lacrimal duct. The lacrimal support tube is approximately 7cm long, allowing it to pass fully through the lacrimal duct into the nasal cavity and traverse the entire lacrimal duct. The diameter of each cylindrical support tube is approximately 0.5mm, providing sufficient support for the lacrimal duct. The area between the double-stranded cylindrical silicone tubes is the site for tear drainage during tube insertion. This design allows the tube to drain tears by coordinating with lacrimal muscle contractions during tube insertion. It also facilitates lacrimal irrigation and medication administration, solving the problem of epiphora during tube insertion that still exists with existing single-stranded silicone lacrimal support tubes. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the upper structure of the lacrimal duct support tube of the present invention;

[0025] Figure 3 This is a schematic diagram of the lower structure of the lacrimal duct support tube of the present invention;

[0026] Figure 4 This is a schematic diagram of the combined structure of the support tube and implantation aid of the present invention;

[0027] Figure 5 This is a schematic diagram of the reset frame and clamping plate structure of the present invention;

[0028] In the diagram: 1. Lacrimal duct support tube main body; 101. Columnar extension section; 102. Flat connecting section; 103. Connecting section; 104. Folding structure; 2. Wing-shaped structure; 3. Cylindrical structure; 4. Silicone connecting strip; 501. Implantation section; 502. Handle; 503. Anti-slip texture; 504. Positioning protrusion; 505. Enlarged end. Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] Please see Figure 1-5 The present invention provides an embodiment of a single lacrimal duct implantable lacrimal duct support tube capable of draining tears, comprising a lacrimal duct support tube body 1;

[0031] Also includes:

[0032] The wing-shaped structure 2 is located at the upper end of the lacrimal duct support tube body 1, and there are two wing-shaped structures 2. The ends and inner sides of the two wing-shaped structures 2 are connected by silicone connecting strips 4. A cylindrical structure 3 is provided on the outer wall of the inner side of the wing-shaped structure 2, and the cylindrical structure 3 is integrally formed with the wing-shaped structure 2.

[0033] Please see Figure 2 The thickness of the wing-shaped structure 2 is 0.05 mm. The use of the wing-shaped structure 2 helps to stabilize the position of the lacrimal duct support tube body 1 and prevent it from falling into the lacrimal duct.

[0034] Please see Figure 1 , Figure 2 and Figure 3 The lacrimal duct support tube body 1 includes a columnar extension section 101, a flat connecting section 102, and a connecting section 103. There are two columnar extension sections 101, and the lower ends of the two columnar extension sections 101 are connected by the flat connecting section 102. The connecting section 103 is located at the upper end of the two columnar extension sections 101, and the columnar extension sections 101 are connected to the cylindrical structure 3 of the wing structure 2 through the connecting section 103. The lacrimal duct support tube body 1 is made of silicone, and the lower end of the lacrimal duct support tube body 1 is a flat membrane structure, which can be more easily implanted into the lacrimal duct.

[0035] Please see Figure 2 The diameter of the connection between the connecting segment 103 and the cylindrical structure 3 is 0.2 mm, and the connecting segment 103 extends downward for about 1.5-2 mm and gradually thickens to 0.5 mm.

[0036] Please see Figure 3 The flat connecting section 102 is 3mm long, 0.05mm thick, and 0.5mm wide.

[0037] Please see Figure 3 A folding structure 104 is provided at the middle position of the flat connecting section 102, and the folding structure 104 is integrally formed with the flat connecting section 102.

[0038] Please see Figure 1-5 A method for implanting a lacrimal duct support tube capable of draining tears into a single lacrimal duct includes the following steps:

[0039] Step 1: Before implantation, place the lacrimal duct support tube onto the implantation aid for later use;

[0040] Step 2: During implantation, hold the handle of the implantation aid and widen the lacrimal punctum in the usual way. Insert the lacrimal duct support tube through the lacrimal punctum, through the lacrimal canaliculus (if the lacrimal canaliculus is broken, pass through the temporal and nasal ends of the lacrimal canaliculus in sequence), the lacrimal sac, and the nasolacrimal duct into the nasal cavity. Then, loosen the upper silicone connecting band 4 and extend it into the nasal cavity.

[0041] Step 3: After inserting and fine-tuning until satisfactory, rotate and retract the implantation aid while observing the condition of the lacrimal duct support tube. Once it stabilizes and does not retract, the implantation is successful. After completion, completely remove the implantation aid from the lacrimal duct system.

[0042] Please see Figure 5 The implantation aid in step one includes an implantation segment 501, a handle 502, and an enlarged end 505. The handle 502 is installed at one end of the implantation segment 501, and the enlarged end 505 is installed at the other end of the implantation segment 501. The handle 502 allows for easier operation of the implantation aid, and the enlarged end 505 can apply pressure to the folding structure 104 on the flat connecting segment 102, making it easier to implant the lacrimal duct support tube into the lacrimal duct.

[0043] Please see Figure 5 The upper end of the implant segment 501 is provided with a positioning protrusion 504, and the outer wall of the handle 502 is provided with anti-slip texture 503. The anti-slip texture 503 is integrally formed with the handle 502. The positioning protrusion 504 facilitates the fixation of the upper part of the lacrimal duct support tube, and the anti-slip texture 503 can increase the friction between the handle 502 and the hand, preventing the handle 502 from slipping off the hand.

[0044] Please see Figure 5 The handle 502 is 2-3cm long and is made of metal or PE material, while the implant segment 501 is made of metal material.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lacrimal passage support tube for implanting in a single lacrimal passage to drain lacrimal fluid, comprising a lacrimal passage support tube main body (1); characterized in that: Also include: Wing structure (2) is arranged at the upper end of the tear duct support tube body (1), and the wing structure (2) is provided with two, the end and the inner side of the two wing structures (2) are connected by the silica gel connecting belt (4), the outer wall of the inner side of the wing structure (2) is provided with a cylindrical structure (3), and the cylindrical structure (3) is integrally formed with the wing structure (2); The tear duct support tube body (1) comprises a cylindrical extension section (101), a flat connecting section (102) and a connecting section (103), the cylindrical extension section (101) is provided with two, and the lower end of the two cylindrical extension sections (101) is connected by the flat connecting section (102), the connecting section (103) is arranged at the upper end of the two cylindrical extension sections (101), and the cylindrical extension section (101) is connected with the cylindrical structure (3) of the wing structure (2) through the connecting section (103), the tear duct support tube body (1) is made of silica gel.

2. The lacrimal passage support tube according to claim 1, wherein: The thickness of the wing structure (2) is 0.05mm.

3. The single punctum implantable lacrimal drainage device of claim 1, wherein: The diameter of the connecting section (103) and the connecting section (103) is 0.2mm, and the connecting section (103) extends downward about 1.5-2mm gradually thickens to 0.5mm.

4. The lacrimal passage support tube according to claim 3, wherein: The flat connecting section (102) is 3mm long, 0.05mm thick and 0.5mm wide.

5. A lacrimal passageway support tube for implanting in a single lacrimal passageway to drain lacrimal fluid, according to claim 4, wherein: The flat connecting section (102) is provided with a folding structure (104) at the middle position, and the folding structure (104) is integrally formed with the flat connecting section (102).

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