Medical silicone tear duct drainage tube without organic solvent residue

Abstract

The utility model discloses a kind of medical silica gel lacrimal passage drainage tubes without organic solvent residue, belong to medical instrument technical field, its technical scheme main points include solid pipe, the two sides of the front side of the solid pipe are respectively connected with first drainage tube and second drainage tube, the first drainage tube and the second drainage tube are set in the traction assembly by being set in the traction assembly, when traction needle is inserted into tear duct, traction needle can provide accurate guide direction for relatively soft first drainage tube and second drainage tube, medical staff can accurately push first drainage tube and second drainage tube to suitable position by the rigidity of traction needle, effectively avoid the situation that first drainage tube and second drainage tube are bent, folded or deviated from correct path in tear duct due to too soft, which greatly improves the precision of insertion, reduces the risk of damage to tear duct tissue due to misoperation, so that surgical operation is more safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a medical silicone lacrimal duct drainage tube without organic solvent residue. Background Technology

[0002] Silicone without organic solvent residue requires the use of high-purity silicone raw materials that meet medical standards and do not contain any possible organic solvent residues. This ensures that no organic solvents are used. During the manufacturing process, special physical processing methods, such as a combination of thermoforming and mechanical shaping, are used to make the silicone reach the appropriate shape and size to meet the functional requirements of lacrimal duct drainage.

[0003] Currently, lacrimal duct obstruction is commonly treated with lacrimal duct placement. However, the commonly used indwelling tubes in clinical practice cannot be expanded or adjusted in size. Patients have different lacrimal sac sizes, and the tube is prone to dislodgement in some patients after surgery. Traditional indwelling tubes cannot prevent drainage tube obstruction caused by purulent discharge and bleeding. Prolonged placement in the nasolacrimal duct can easily cause chronic inflammatory reactions, and the lacrimal duct is prone to re-obstruction after tube removal. The French imported drainage tubes currently used in clinical practice have a diameter approximately equal to the diameter of the lacrimal canaliculus. For patients with nasolacrimal duct obstruction, the tube diameter is too small and cannot play an effective drainage role.

[0004] An existing patent (publication number: CN219538664U) discloses a nasolacrimal duct drainage device. In this utility model, a first drainage tube and a second drainage tube are placed in the patient's nasolacrimal duct. Because the first and second through holes on the first and second drainage tubes are arranged alternately, liquid can be drained at every level in the nasolacrimal duct, thereby preventing postoperative pus and blood from blocking the duct. Furthermore, because the first and second drainage tubes are made of double-layer silicone material, they can be expanded. The first and second drainage tubes are relatively long and can be cut according to different patients to adapt to different patients. The fixed tube is used for intraoperative traction of the drainage tube.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, when the drainage tubes in these patents are inserted into the lacrimal duct, they are too soft, making it difficult to maintain their shape and orientation during insertion. They are also prone to bending and folding, making it difficult to quickly and accurately enter the lacrimal duct. This causes inconvenience to the surgical procedure, increases the surgical time, and thus increases the patient's pain, making them unsuitable for use.

[0006] Therefore, a medical silicone lacrimal duct drainage tube without organic solvent residue is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a medical silicone lacrimal duct drainage tube without organic solvent residue. This solves the problem in the aforementioned patent where the drainage tube is too soft, making it difficult to maintain its shape and direction during insertion, and it is prone to bending and folding. This makes it difficult to quickly and accurately enter the lacrimal duct, which inconveniences the surgical procedure, increases the operation time, and increases the patient's pain, thus making it unsuitable for use.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a medical silicone lacrimal duct drainage tube without organic solvent residue, comprising a solid tube, wherein a first drainage tube and a second drainage tube are respectively connected to the two sides of the front side of the solid tube, a traction component is provided inside the first drainage tube and the second drainage tube, and a flow guiding structure is provided on the outer side of the first drainage tube and the second drainage tube.

[0009] The traction assembly includes through holes respectively opened on the outside of the first drainage tube and the second drainage tube. A traction needle is slidably connected inside the through hole. A fixing sleeve is fixedly connected to the rear side of the traction needle. A hand handle is fixedly connected to the outside of the fixing sleeve.

[0010] Preferably, the flow guiding structure includes outflow holes respectively opened on the outside of the first flow pipe and the second flow pipe, and the outflow holes are elliptical in shape.

[0011] Preferably, the inner sides of the first and second drainage tubes are provided with internal flow holes, which are located inside the external flow holes.

[0012] Preferably, the front side of both the first drainage tube and the second drainage tube is provided with a sliding sleeve, and the outer side of the sliding sleeve is arc-shaped.

[0013] Preferably, the outer side of the handgrip is provided with an anti-slip groove, which is concave in shape.

[0014] Preferably, a push pin is fixedly connected to the front side of the traction pin, and the front side of the push pin is circular.

[0015] Preferably, antibacterial particles are provided on the inner side of both the first and second drainage tubes, and the antibacterial particles are made of silver nanoparticles.

[0016] Preferably, both the first drainage tube and the second drainage tube are provided with a lubricating layer on their outer sides, and the lubricating layer is made of hyaluronic acid material.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application incorporates a traction component within the first and second drainage tubes. When the traction needle is inserted into the lacrimal duct, it provides precise guidance for the relatively soft first and second drainage tubes. Medical staff can utilize the rigidity of the traction needle to accurately push the first and second drainage tubes to the appropriate positions, effectively preventing them from bending, folding, or deviating from their correct path due to their softness. This significantly improves insertion accuracy, reduces the risk of damage to lacrimal duct tissue due to misoperation, and makes the surgical procedure safer and more reliable. Furthermore, during insertion, the traction needle enhances the operability of the first and second drainage tubes, allowing medical staff to more easily apply pushing force, enabling them to overcome the resistance of the lacrimal duct tissue. Compared to simply inserting the first and second drainage tubes, this method significantly shortens insertion time, greatly improves surgical efficiency, and reduces patient waiting time and pain on the operating table.

[0019] 2. This application incorporates a drainage structure that facilitates the drainage of tears through the first and second drainage tubes, reducing tear accumulation and better alleviating symptoms such as tearing. Furthermore, it reduces the possibility of bacterial growth, thus aiding in the recovery of the patient's eyes. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the medical silicone lacrimal duct drainage tube of this utility model that has no organic solvent residue;

[0021] Figure 2 This is a structural diagram of the solid tube of this utility model;

[0022] Figure 3 This is a structural diagram of the traction assembly of this utility model;

[0023] Figure 4 This is a structural diagram of the traction needle of this utility model;

[0024] Figure 5 This is a structural diagram of the flow guiding structure of this utility model;

[0025] Figure 6 This is a plan view of the first drainage tube of this utility model.

[0026] In the diagram, 1. Solid tube; 2. First drainage tube; 3. Second drainage tube; 4. Traction assembly; 401. Through hole; 402. Traction needle; 403. Fixing sleeve; 404. Hand handle; 5. Guide structure; 501. Outflow hole; 502. Inflow hole; 503. Sliding sleeve; 6. Anti-slip groove; 7. Ejector pin; 8. Antibacterial particles; 9. Lubricating layer. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-6 The present invention provides the following technical solution:

[0029] A medical silicone lacrimal duct drainage tube without organic solvent residue includes a solid tube 1, with a first drainage tube 2 and a second drainage tube 3 respectively connected to the two sides of the front side of the solid tube 1. The first drainage tube 2 and the second drainage tube 3 are both provided with a traction component 4 inside, and the first drainage tube 2 and the second drainage tube 3 are both provided with a flow guiding structure 5 on the outside.

[0030] The traction assembly 4 includes through holes 401 respectively opened on the outside of the first drainage tube 2 and the second drainage tube 3. A traction needle 402 is slidably connected inside the through hole 401. A fixing sleeve 403 is fixedly connected to the rear side of the traction needle 402. A hand handle 404 is fixedly connected to the outside of the fixing sleeve 403.

[0031] In this embodiment: the traction component 4 provides precise guidance for the softer first drainage tube 2 and second drainage tube 3 during lacrimal duct insertion. With the sliding connection of the traction needle 402 within the through hole 401 and the operation of the hand lever 404, medical staff can effectively control the direction of the first drainage tube 2 and second drainage tube 3, ensuring they smoothly reach the designated position along the lacrimal duct path, improving insertion accuracy, avoiding tissue damage, and offering flexible and convenient operation that can be adjusted as needed. The traction needle 402 is easily withdrawn after insertion, improving overall surgical efficiency and patient experience. Subsequently, the drainage structure 5 on the outer side of the first drainage tube 2 and second drainage tube 3 optimizes tear drainage, guiding it to quickly and evenly distribute and drain according to the tear flow characteristics, improving drainage efficiency, reducing accumulation, and lowering the risk of infection. Simultaneously, the first drainage tube 2 and second drainage tube 3, with their organic solvent-free residue characteristics, also reduce the possibility of chemical irritation causing inflammation and infection. This dual protection promotes patient eye recovery, reduces complications, improves treatment safety and effectiveness, and alleviates the burden on patients.

[0032] Specifically, such as Figure 5 As shown, the flow guiding structure 5 includes outflow holes 501 respectively opened on the outside of the first flow pipe 2 and the second flow pipe 3, and the outflow holes 501 are elliptical in shape.

[0033] Specifically, such as Figure 5As shown, an inner flow hole 502 is provided on the inner side of the first drainage pipe 2 and the second drainage pipe 3, and the inner flow hole 502 is located inside the outer flow hole 501.

[0034] Specifically, such as Figure 5 As shown, a sliding sleeve 503 is provided on the front side of both the first drainage tube 2 and the second drainage tube 3, and the outer side of the sliding sleeve 503 is arc-shaped.

[0035] In this embodiment, the outflow holes 501 of the first drainage tube 2 and the second drainage tube 3 are designed to facilitate rapid drainage of tears, especially when tear secretion is excessive, effectively preventing tear accumulation. The inflow hole 502 is located inside the outflow hole 501, forming a dual drainage path that further improves the efficiency of tear drainage, ensuring that tears in the lacrimal duct can be drained out in a timely and comprehensive manner, reducing the adverse effects of tear retention on the lacrimal duct tissue, and helping to maintain the normal physiological environment of the lacrimal duct. At the same time, the arc shape of the sliding sleeve 503 plays a good guiding role in front of the first drainage tube 2 and the second drainage tube 3. During insertion, the arc-shaped sliding sleeve 503 reduces the direct friction of the first drainage tube 2 and the second drainage tube 3 on the lacrimal duct tissue, playing a certain buffering and protective role, which is beneficial to the patient's eye comfort and tissue health. Furthermore, the arc-shaped sliding sleeve 503 can be trimmed later to ensure the normal flow and use of the first drainage tube 2 and the second drainage tube 3.

[0036] Specifically, such as Figure 3 As shown, the outer side of the handheld lever 404 is provided with an anti-slip groove 6, which is concave in shape.

[0037] Specifically, such as Figure 4 As shown, a pin 7 is fixedly connected to the front side of the traction pin 402, and the front side of the pin 7 is circular.

[0038] In this embodiment: the concave anti-slip groove 6 on the outer side of the handheld rod 404 increases the friction between the medical staff's hand and the handheld rod 404. When inserting the traction needle 402 and adjusting the position of the first drainage tube 2 and the second drainage tube 3, this anti-slip design ensures that the medical staff can hold the handheld rod 404 stably and prevent operational errors due to hand slippage. The circular pin 7 on the front side of the traction needle 402 plays an important role in the insertion process. The circular pin 7 can push the first drainage tube 2 and the second drainage tube 3 to be inserted and moved more smoothly.

[0039] Specifically, such as Figure 6 As shown, antibacterial particles 8 are provided on the inner side of both the first drainage tube 2 and the second drainage tube 3. The antibacterial particles 8 are made of silver nanoparticles.

[0040] Specifically, such as Figure 6As shown, a lubricating layer 9 is provided on the outer side of both the first drainage tube 2 and the second drainage tube 3. The lubricating layer 9 is made of hyaluronic acid material.

[0041] In this embodiment: by mixing antibacterial nanoparticles 8 into the first drainage tube 2 and the second drainage tube 3, the nanoparticles can inhibit bacterial growth through various mechanisms, such as destroying the bacterial cell membrane and interfering with the bacterial metabolic process. During tear drainage, the antibacterial particles 8 can effectively kill bacteria that may adhere to the inner walls of the first drainage tube 2 and the second drainage tube 3, preventing bacterial growth and reproduction, thereby reducing the risk of complications such as lacrimal duct inflammation caused by bacterial infection, providing continuous antibacterial protection for the patient's eye health, helping to improve treatment effect and reduce recurrence rate. The outer lubricating layer 9 made of hyaluronic acid material provides good lubrication performance for the first drainage tube 2 and the second drainage tube 3. During the insertion of the first drainage tube 2 and the second drainage tube 3 into the lacrimal duct and during their retention in the lacrimal duct, the lubricating layer 9 can significantly reduce the friction between the first drainage tube 2 and the second drainage tube 3 and the lacrimal duct tissue.

[0042] Working principle: When using medical silicone lacrimal duct drainage tubes without organic solvent residue, medical staff first insert the traction needle 402 through the through hole 401 on the outside of the first drainage tube 2 and the second drainage tube 3, so that the rear fixing sleeve 403 of the traction needle 402 is connected to the hand handle 404. The concave anti-slip groove 6 on the outside of the hand handle 404 allows the medical staff to hold it stably and prevent slippage. During insertion into the lacrimal duct, the circular pin 7 on the front of the traction needle 402 smoothly pushes the first drainage tube 2 and the second drainage tube 3 forward along the lacrimal duct. The operator precisely controls the direction of the traction needle 402 using a handheld lever 404, thereby guiding the first drainage tube 2 and the second drainage tube 3 smoothly through the lacrimal punctum, lacrimal canaliculi, and other areas, accurately reaching the designated location such as the lacrimal sac or nasolacrimal duct along the lacrimal duct path. This improves the accuracy of insertion and effectively avoids damage to the lacrimal duct tissue. After insertion, the traction needle 402 can be easily withdrawn without affecting subsequent drainage operations. During tear drainage, the elliptical outflow hole 501 on the outer side of the first drainage tube 2 and the second drainage tube 3 can quickly drain tears when there is a large amount of tear secretion, while the inner inflow hole 50... 2. In conjunction with this, a dual internal and external drainage path is formed. Based on the tear flow characteristics, the tears are rapidly and evenly distributed and drained, improving drainage efficiency and reducing tear accumulation in the lacrimal duct. The anterior arc-shaped sliding sleeve 503 reduces direct friction between the first drainage tube 2 and the second drainage tube 3 and the lacrimal duct tissue during insertion, providing buffering and protection. Furthermore, the arc-shaped sliding sleeve 503 can be subsequently trimmed according to actual needs to ensure the normal flow and use of the first drainage tube 2 and the second drainage tube 3, enabling them to achieve optimal drainage effects in different clinical scenarios. At the same time, the antibacterial nanoparticles 8 mixed in the first drainage tube 2 and the second drainage tube 3 utilize the multiple mechanisms of nano-silver to inhibit bacterial growth, effectively killing bacteria that may adhere to the inner wall of the tube, preventing bacterial growth and reproduction, and reducing the risk of complications such as lacrimal duct inflammation. The lubricating layer 9 made of hyaluronic acid material on the outside significantly reduces the friction between the first drainage tube 2 and the second drainage tube 3 and the lacrimal duct tissue, making insertion smoother, reducing patient pain, protecting lacrimal duct tissue, providing multiple guarantees for the patient's eye recovery, improving the safety and effectiveness of treatment, and reducing the burden on the patient.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A medical silicone lacrimal duct drainage tube free of organic solvent residue, comprising a solid tube (1), characterized in that: The front sides of the solid tube (1) are respectively connected to the first drainage tube (2) and the second drainage tube (3). The first drainage tube (2) and the second drainage tube (3) are both equipped with traction components (4), and the first drainage tube (2) and the second drainage tube (3) are both equipped with flow guiding structures (5). The traction assembly (4) includes through holes (401) respectively opened on the outside of the first drainage tube (2) and the second drainage tube (3). A traction needle (402) is slidably connected inside the through hole (401). A fixing sleeve (403) is fixedly connected to the rear side of the traction needle (402). A hand handle (404) is fixedly connected to the outside of the fixing sleeve (403).

2. The medical silicone lacrimal duct drainage tube without organic solvent residue according to claim 1, characterized in that: The flow guiding structure (5) includes outflow holes (501) respectively opened on the outside of the first flow pipe (2) and the second flow pipe (3), and the outflow holes (501) are elliptical in shape.

3. The medical silicone lacrimal duct drainage tube without organic solvent residue according to claim 2, characterized in that: The first drainage tube (2) and the second drainage tube (3) have an inner flow hole (502) on their inner sides, and the inner flow hole (502) is located inside the outer flow hole (501).

4. The medical silicone lacrimal duct drainage tube without organic solvent residue according to claim 1, characterized in that: The front side of the first drainage tube (2) and the second drainage tube (3) are provided with a sliding sleeve (503), and the outer side of the sliding sleeve (503) is arc-shaped.

5. The medical silicone lacrimal duct drainage tube without organic solvent residue according to claim 1, characterized in that: The outer side of the handheld lever (404) is provided with an anti-slip groove (6), which is concave in shape.

6. The medical silicone lacrimal duct drainage tube without organic solvent residue according to claim 1, characterized in that: A pin (7) is fixedly connected to the front side of the traction pin (402), and the front side of the pin (7) is circular.

7. The medical silicone lacrimal duct drainage tube without organic solvent residue according to claim 1, characterized in that: The inner sides of the first drainage tube (2) and the second drainage tube (3) are provided with antibacterial particles (8), which are made of silver nanoparticles.

8. The medical silicone lacrimal duct drainage tube without organic solvent residue according to claim 1, characterized in that: The first drainage tube (2) and the second drainage tube (3) are both provided with a lubricating layer (9) on their outer sides, and the lubricating layer (9) is made of hyaluronic acid material.

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