Bionic wooden club-shaped lacrimal duct tube

Abstract

The utility model belongs to the technical field of medical instruments, and particularly discloses a bionic wooden-stick-shaped lacrimal duct tube which comprises a tube body and a tube head, the diameter of the tube head is larger than that of the tube body, the tube head is coaxially arranged at the top of the tube body, the tube head and the tube body are integrally formed to form a wooden stick shape, and the tube head and the tube body are coaxially arranged. The interior of the pipe head is coaxially communicated with the interior of the pipe body, a discharge hole is formed in the top wall of the pipe head, and discharge holes are formed in the side wall of the pipe head and the side wall of the pipe body. According to the bionic wooden-stick-shaped lacrimal duct tube, the tube head with the large diameter is coaxially arranged on the top of the tube body to form a wooden stick shape, so that the whole lacrimal duct tube is generally consistent with the outline of a human lacrimal duct and better fits the natural outline of the human lacrimal duct tube, the implanting and supporting effects are good, and the discharge holes are formed in the top wall of the tube head, so that the lacrimal duct tube is convenient to use. Drain holes are formed in the side walls of the tube head and the tube body, secretions of the lacrimal duct tube are induced, it is ensured that tears can be discharged smoothly, and hydrops and inflammation infection caused by local accumulation of hydrops are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a bionic mallet-shaped lacrimal duct tube. Background Art

[0002] In the field of ophthalmology, tear duct diseases such as tear duct obstruction and dacryocystitis are common eye diseases. These diseases often lead to the patient's inability to drain tears normally, which in turn causes eye discomfort, tearing, and even infection. During nasolacrimal duct reconstruction surgery, it is generally necessary to implant a tear duct tube.

[0003] Existing tear duct tubes are generally made of silicone rubber and are in the shape of long tubes (such as Figure 2 As shown in the figure, when the doctor needs to do nasolacrimal duct reconstruction surgery, he will cut out the corresponding silicone rubber tube according to the actual length of the patient's tear duct and implant it into the nasolacrimal duct. After the nasolacrimal duct grows and regenerates successfully, the silicone rubber tube will be pulled out. Since the upper half of the human tear duct is actually in the shape of a mallet (as shown in the figure), the doctor will cut out the corresponding silicone rubber tube according to the actual length of the patient's tear duct and implant it into the nasolacrimal duct. After the nasolacrimal duct grows and regenerates successfully, the silicone rubber tube will be pulled out. Figure 1 As shown in the figure, the upper part is larger than the lower part. Therefore, the existing tear duct tube is completely incompatible with the human body structure. After implantation, some human tissues (the top and lower part of the tear duct) are over-stretched, and some tissues have no support and grow fat, which cannot achieve the ideal implantation effect. At the same time, the existing tear duct tube has the same size at the top and bottom. Not only does it have no hanging position, the tube is easy to fall off naturally, resulting in support failure, but it also has no drainage function. The accumulated fluid is very likely to accumulate locally, leading to water accumulation and inflammatory infection.

[0004] Therefore, the inventor is committed to designing a tear duct tube to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a bionic mallet-shaped lacrimal duct tube, which not only has good implantation and supporting effects, but also can avoid water accumulation and inflammatory infection.

[0006] In order to achieve the above-mentioned purpose, a technical solution adopted by the present utility model is:

[0007] A bionic mallet-shaped lacrimal duct tube comprises a tube body and a tube head, wherein the diameter of the tube head is larger than the diameter of the tube body, the tube head is coaxially arranged on the top of the tube body and is integrally formed with the tube body to form a mallet shape, the interior of the tube head is coaxially connected to the interior of the tube body, a discharge hole is provided on the top wall of the tube head, and drainage holes are provided on the side walls of the tube head and the side walls of the tube body.

[0008] As an improvement of the bionic mallet-shaped lacrimal duct tube of the present invention, there are multiple drainage holes, and some of the drainage holes are arranged at intervals on the side wall of the tube head.

[0009] As an improvement of the bionic mallet-shaped lacrimal duct tube of the present invention, another part of the drainage holes are arranged at intervals on the inner wall of the tube body close to one end of the tube head.

[0010] As an improvement to the bionic mallet-shaped lacrimal duct tube of the utility model, each of the drainage holes is arranged along the radial direction of the tube body.

[0011] As an improvement of the bionic mallet-shaped lacrimal duct tube of the utility model, the wall thickness of the tube head is greater than the wall thickness of the tube body.

[0012] As an improvement of the bionic mallet-shaped lacrimal duct tube of the utility model, the inner cavity of the tube head is ellipsoidal, and the diameter of the tube head gradually increases and then gradually decreases from top to bottom.

[0013] As an improvement of the bionic mallet-shaped lacrimal duct tube of the present invention, two circles of outer oblique sections are arranged on the outer wall of the tube head at intervals, and the inclination directions of the two circles of outer oblique sections are opposite. A circle of outer vertical sections is provided between the two circles of outer oblique sections, and the outer top of the tube head, the two circles of outer oblique sections, the one circle of outer vertical sections and the outer wall of the tube body are all connected by rounded corners.

[0014] As an improvement of the bionic mallet-shaped lacrimal duct tube of the present invention, two circles of inner oblique sections are arranged at intervals on the inner wall of the tube head, and the inclination directions of the two circles of inner oblique sections are opposite. A circle of inner vertical sections is provided between the two circles of inner oblique sections, and the inner top of the tube head, the two circles of inner oblique sections, the one circle of inner vertical sections and the inner wall of the tube body are all connected by rounded corners.

[0015] As an improvement of the bionic mallet-shaped tear duct tube of the utility model, the top wall thickness of the tube head is greater than the side wall thickness, the discharge hole is trumpet-shaped and the upper end opening is larger than the lower end opening.

[0016] As an improvement of the bionic mallet-shaped lacrimal duct tube of the present invention, the diameter of the upper opening of the discharge hole is 3.2 mm to 3.4 mm, the diameter of the lower opening of the discharge hole is 3 mm, and the depth of the discharge hole is 5 mm.

[0017] Compared with the existing technology, the bionic mallet-shaped tear duct tube of the present invention has a tube head with a larger diameter coaxially arranged on the top of the tube body to form a mallet shape, so that the entire tear duct tube is roughly consistent with the contour of the human tear duct, better fits the natural contour of the human tear duct, and has good implantation and support effects. A discharge hole is provided on the top wall of the tube head, and drainage holes are provided on the side walls of the tube head and the tube body to drain the secretions of the tear duct tube, ensuring that tears can be discharged smoothly, preventing local accumulation of fluid, leading to water accumulation and inflammatory infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a diagram of the structure of the human tear duct;

[0019] Figure 2 This is a diagram of the existing tear duct structure;

[0020] Figure 3 This is an enlarged main view of the bionic mallet-shaped lacrimal duct of the present invention;

[0021] Figure 4 This is an enlarged cross-sectional view of the bionic mallet-shaped lacrimal duct of the present invention;

[0022] Figure 5 It is an enlarged cross-sectional view of the bionic mallet-shaped lacrimal duct head of the utility model.

[0023] Illustration:

[0024] 1. Tube body; 11. Inner hole; 2. Tube head; 21. Inner cavity; 3. First excretion hole; 31. Second excretion hole; 4. Discharge hole; 5. Outer vertical section; 51. First outer oblique section; 52. Second outer oblique section; 6. Inner vertical section; 61. First inner oblique section; 62. Second inner oblique section. DETAILED DESCRIPTION

[0025] The following specifically illustrates the implementation of the present invention in conjunction with the accompanying drawings. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention.

[0026] Reference Figures 3 to 5 A bionic club-shaped lacrimal duct tube comprises a tube body 1 and a tube head 2. The diameter of the tube head 2 is larger than that of the tube body 1. The tube head 2 is coaxially arranged on the top of the tube body 1 and is integrally formed with the tube body 1 to form a club shape. The overall outline is consistent with the shape of the nasolacrimal duct to avoid causing discomfort to the human body. The interior of the tube head 2 is coaxially connected with the interior of the tube body 1. A discharge hole 4 is provided on the top wall of the tube head 2, and drainage holes are provided on the side walls of the tube head 2 and the side walls of the tube body 1.

[0027] Reference Figure 3 and Figure 4The tube body 1 is in the shape of a long tube, and an inner hole 11 is coaxially provided inside the tube body 1. The tube head 2 is ellipsoidal as a whole and has an ellipsoidal inner cavity 21 inside. The inner cavity 21 is used to drain the fluid accumulated in the duct, and also provides large deformation during implantation and removal, so that the duct is easy to implant and remove, and is conducive to the discharge of foreign matter such as mucus, tears, and accumulated water. The tube body 1 and the tube head 2 are integrally formed of the same material. There are multiple excretion holes, and the multiple excretion holes are specifically divided into two parts, one part of the excretion holes is specifically a plurality of first excretion holes 3, and the other part of the excretion holes is specifically a plurality of second excretion holes 31. All the first excretion holes 3 are arranged at intervals on the side wall of the tube head 2, and each first excretion hole 3 is arranged along the radial direction of the tube body 1 and is connected to the inner cavity 21 of the tube head 2. All second drainage holes 31 are arranged at intervals on the inner wall of the tube body 1 near one end of the tube head 2, so that the lower end of the tube body 1 is left long (the second drainage hole 31 is not set at the lower end of the tube body 1). The doctor can shorten the lower end of the tube body 1 according to the specific situation to adapt to different nasolacrimal ducts. Each second drainage hole 31 is also arranged along the radial direction of the tube body 1 and is connected to the inner hole 11 of the tube body 1. All first drainage holes 3 and all second drainage holes 31 are evenly arranged. When tears, mucus or water and other excretions are produced in the nasolacrimal duct, they can be drained out from the drainage holes in time without generating water accumulation, thereby reducing the risk of infection.

[0028] Reference Figure 4 and Figure 5The wall thickness of the tube head 2 is greater than that of the tube body 1. The diameter of the tube head 2 gradually increases and then decreases from top to bottom, so that the outer diameter of the upper end of the tube head 2 gradually increases, which is convenient for the insertion of the tear duct tube. The outer diameter of the lower end of the tube head 2 gradually decreases, which is convenient for the removal of the tear duct tube. Specifically, the outer wall of the tube head 2 is surrounded by two circles of outer oblique sections and one circle of outer vertical sections 5. The two circles of outer oblique sections are specifically a circle of first outer oblique sections 51 and a circle of second outer oblique sections 52. A circle of first outer oblique sections 51, a circle of outer vertical sections 5 and The three second outer oblique sections 52 are arranged on the outer side wall of the tube head 2 in sequence from top to bottom. The outer vertical section 5 is arranged vertically and is located between the first outer oblique section 51 and the second outer oblique section 52. The inclination direction of the first outer oblique section 51 is opposite to the inclination direction of the second outer oblique section 52. The angle between the first outer oblique section 51 and the second outer oblique section 52 is an obtuse angle. The outer top of the tube head 2, the first outer oblique section 51, the outer vertical section 5, the second outer oblique section 52 and The outer walls of the tube body 1 are connected by rounded corners, making the outer wall of the tube head 2 smooth, preventing the sharp corners from injuring the skin tissue when the tear duct tube is implanted, and also preventing friction with the skin after implantation, which may cause discomfort; the inner wall of the tube head 2 is provided with two circles of inner oblique sections and one circle of inner vertical sections 6, the two circles of inner oblique sections are specifically a circle of first inner oblique sections 61 and a circle of second inner oblique sections 62, and the three circles of the first inner oblique section 61, the circle of the inner vertical section 6 and the circle of the second inner oblique section 62 are arranged on the tube head in sequence from top to bottom. 2, a circle of inner vertical sections 6 is vertically arranged and located between a circle of first inner oblique sections 61 and a circle of second inner oblique sections 62. The inclination direction of the first inner oblique section 61 is opposite to the inclination direction of the second inner oblique section 62, and the angle between the first inner oblique section 61 and the second inner oblique section 62 is an obtuse angle. The inner top of the tube head 2, a circle of first inner oblique sections 61, a circle of inner vertical sections 6, a circle of second inner oblique sections 62 and the inner wall of the tube body 1 are all connected by rounded corners, so that the inner wall of the tube head 2 is smooth.

[0029] Reference Figure 4 and Figure 5 The top wall thickness of the tube head 2 is greater than the side wall thickness so as to increase the opening area of ​​the discharge hole 4. The discharge hole 4 at the top of the tube head 2 is trumpet-shaped and its upper end opening is larger than its lower end opening. The discharge hole 4, the inner cavity 21 and the inner hole 11 are coaxially arranged. The discharge hole 4 is connected to the inner cavity 21. The diameter a of the upper end opening of the discharge hole 4 is 3.2mm~3.4mm, the diameter b of the lower end opening of the discharge hole 4 is 3mm, and the depth c of the discharge hole 4 is 5mm.

[0030] The bionic club-shaped lacrimal duct tube of the present invention includes two parts: a tube body 1 and a tube head 2, wherein the diameter of the tube head 2 is larger than the diameter of the tube body 1, and is coaxially arranged at the top of the tube body 1, and is integrally formed with the tube body 1 to form a unique club-shaped structure. This design enables the lacrimal duct tube to better fit the natural contour of the human lacrimal duct, reducing the pain and discomfort during the implantation process. At the same time, the tube head 2 and the interior of the tube body 1 are coaxially connected to ensure that tears can be discharged smoothly. A discharge hole 4 is provided on the top wall of the tube head 2 for discharging secretions from the top of the lacrimal duct; and drainage holes are evenly distributed on the side walls of the tube head 2 and the side walls of the tube body 1. The size and distribution of these drainage holes have been carefully designed to effectively drain the secretions in the lacrimal duct and prevent the occurrence of water accumulation and infection.

[0031] The bionic mallet-shaped lacrimal duct tube of the utility model has the following advantages:

[0032] (1) The entire tear duct is shaped like a club, which is larger at the top and smaller at the bottom. This shape is more compatible with the nasolacrimal duct of the human body, making the patient feel more comfortable.

[0033] (2) The mallet-shaped tear duct has a better supporting effect on the nasolacrimal duct and is more conducive to the formation of the nasolacrimal duct;

[0034] (3) The entire tear duct is larger at the top and smaller at the bottom, which makes it difficult for the nasolacrimal duct to fall off;

[0035] (4) The diameter of the upper end of the tube head 2 gradually increases, which makes it easier to implant into the nasolacrimal duct;

[0036] (5) The diameter of the lower end of the tube head 2 gradually decreases, which is conducive to the removal of the nasolacrimal duct;

[0037] (6) Drainage holes are evenly arranged on the side wall of the entire lacrimal duct. When tears, mucus, water or other excretions are produced in the nasolacrimal duct, they can be drained out from the drainage holes in time, without causing water accumulation and reducing the risk of infection;

[0038] (7) All contact surfaces are smoothly connected with rounded corners to reduce the patient's foreign body sensation and irritation, making the surgery more comfortable;

[0039] (8) The mallet-shaped bionic design is used to simulate the natural contour of the human tear duct, which improves the fit and drainage effect of the tear duct, making the surgical effect better and the treatment effect better.

[0040] In summary, the bionic mallet-shaped lacrimal duct tube of the present invention has been innovated in its structural design, aiming to improve the lacrimal duct drainage effect, alleviate the patient's pain, and promote the repair and regeneration of the lacrimal duct wall, providing a new solution for the treatment of lacrimal duct diseases.

[0041] The above disclosure is only a preferred embodiment of the present invention and cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A bionic mallet-shaped lacrimal duct tube, characterized in that: It includes a tube body and a tube head, the diameter of the tube head is larger than the diameter of the tube body, the tube head is coaxially arranged on the top of the tube body and is integrally formed with the tube body to form a mallet shape, the interior of the tube head is coaxially connected with the interior of the tube body, a discharge hole is provided on the top wall of the tube head, and drainage holes are provided on the side walls of the tube head and the side walls of the tube body.

2. The bionic mallet-shaped lacrimal duct tube according to claim 1, characterized in that: There are multiple drain holes, and some of the drain holes are arranged at intervals on the side wall of the pipe head.

3. The bionic mallet-shaped lacrimal duct tube according to claim 2, characterized in that: Another part of the drainage holes is arranged at intervals on the inner wall of the tube body close to one end of the tube head.

4. The bionic mallet-shaped lacrimal duct tube according to claim 1, characterized in that: Each of the drain holes is arranged along the radial direction of the tube body.

5. The bionic mallet-shaped lacrimal duct tube according to claim 1, characterized in that: The wall thickness of the tube head is greater than the wall thickness of the tube body.

6. The bionic mallet-shaped lacrimal duct tube according to claim 1, characterized in that: The inner cavity of the tube head is ellipsoidal, and the diameter of the tube head gradually increases and then decreases from top to bottom.

7. The bionic mallet-shaped lacrimal duct according to claim 1 or 6, characterized in that: Two circles of outer oblique sections are arranged on the outer wall of the tube head at intervals, and the inclination directions of the two circles of outer oblique sections are opposite. A circle of outer vertical sections is arranged between the two circles of outer oblique sections. The outer top of the tube head, the two circles of outer oblique sections, the one circle of outer vertical sections and the outer wall of the tube body are all connected by rounded corners.

8. The bionic mallet-shaped lacrimal duct according to claim 1 or 6, characterized in that: Two circles of inner oblique sections are arranged on the inner wall of the tube head at intervals, and the inclination directions of the two circles of inner oblique sections are opposite. A circle of inner vertical sections is arranged between the two circles of inner oblique sections. The inner top of the tube head, the two circles of inner oblique sections, the circle of inner vertical sections and the inner wall of the tube body are all connected by rounded corners.

9. The bionic mallet-shaped lacrimal duct tube according to claim 1, characterized in that: The top wall thickness of the pipe head is greater than the side wall thickness thereof; the discharge hole is trumpet-shaped and the upper end opening thereof is larger than the lower end opening thereof.

10. The bionic mallet-shaped lacrimal duct tube according to claim 1, characterized in that: The upper opening diameter of the discharge hole is 3.2 mm to 3.4 mm, the lower opening diameter of the discharge hole is 3 mm, and the depth of the discharge hole is 5 mm.

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