A set of devices for lacrimal passage stent

Abstract

The utility model discloses a kind of matched devices of injection type tear duct support, it is related to medical instrument technical field, and its technical scheme main point is: including air cylinder, gas port and extruding disc, extruding disc is slidably connected with air cylinder inner wall, extruding disc top is fixedly connected with push rod, push rod top is fixedly connected with push disc, air cylinder bottom is communicated with gas port, air cylinder is close to the outer wall ring of bottom and is provided with fixed disc, fixed disc top two sides are symmetrically provided with fixed rod, another end of fixed rod is connected with clamping disc, fixed rod is sleeved with balance disc, balance disc two sides are symmetrically provided with balance rod, another end of balance rod is fixedly connected with push disc bottom, air cylinder outer wall is equipped with moving thread, moving thread is sleeved with moving disc, the top of moving disc is provided with limit disc two, the bottom of moving disc is provided with limit disc one. The device can solve the problem that after being placed into tear duct support, patient self-injection gas at home is not accurate in controlling the amount of injected gas, effectively improve the scientific effectiveness of patient self-care.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, it relates to a matching device for an inflatable lacrimal duct stent. Background Technology

[0002] The lacrimal duct stent is suitable for situations requiring irrigation and unblocking of the lacrimal duct, and is especially convenient for home use. The procedure involves injecting air using a syringe, adjusting the stent's diameter to flush out inflammatory substances from the lacrimal duct, and exercising the lacrimal duct sphincter muscles. It is simple and convenient to use, improves epiphora, and has a low recurrence rate.

[0003] However, when patients use an inflatable needle at home to inject air, it is difficult to accurately control the amount of gas injected. Excessive air injection may lead to high pressure in the lacrimal duct, causing damage and rupture of the lacrimal duct tissue. Utility Model Content

[0004] The purpose of this invention is to provide a matching device for an inflatable lacrimal duct stent, which can solve the problem of patients not being able to accurately control the amount of gas injected when inflating the stent at home, thus effectively improving the scientific effectiveness of patient self-care.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a matching device for an inflatable lacrimal duct stent, comprising an air cylinder, an air inlet, and a compression plate. The compression plate is slidably connected to the inner wall of the air cylinder. A push rod is fixedly connected to the top of the compression plate, and a push plate is fixedly connected to the top of the push rod. The bottom of the air cylinder communicates with the air inlet. A fixing plate is arranged around the outer wall of the air cylinder near the bottom. Fixing rods are symmetrically arranged on both sides of the top of the fixing plate. A locking plate is connected to the other end of the fixing rod. A balance plate is sleeved on the fixing rod. Balance rods are symmetrically arranged on both sides of the balance plate. The other end of the balance rod is fixedly connected to the bottom of the push plate. A movable thread is provided on the outer wall of the air cylinder. A movable plate is sleeved on the movable thread. A second limiting plate is provided on the top of the movable plate, and a first limiting plate is provided on the bottom of the movable plate.

[0006] By adopting the above technical solution, the moving push plate drives the push rod and balance rod fixedly connected to it. The push rod then drives the compression plate connected to it, and the balance rod then drives the balance plate connected to it. Due to the presence of a moving thread, the movement range of the limiting plates one and two is restricted, thus fixing the moving plate and limiting its movement range. The position of the moving plate determines the range of motion of the balance plate and the compression plate, thereby limiting the amount of air the cylinder can inject. After the surgery, medical staff can pre-set the position of the moving plate in the hospital and then fix it using the limiting plates one and two. When patients use this device for self-care at home, they do not need to adjust the position of the moving plate, avoiding the process of patients determining the injection volume themselves. This effectively avoids the problem of patients not accurately controlling the injected gas volume when self-injecting at home, improving the scientific effectiveness of patient self-care.

[0007] The present invention is further configured such that the limiting disc is threadedly connected to the movable thread of the outer wall of the air cylinder.

[0008] The present invention is further configured such that the limiting disc two is threadedly connected to the movable thread of the outer wall of the air cylinder.

[0009] By adopting the above technical solution, the positions of limit plate one and limit plate two are fixed by threaded connection, thereby achieving the purpose of fixing the moving plate by the limit plate.

[0010] The present invention is further configured such that: the balance bar passes through the movable disk, and the movable disk can move up and down relative to the balance bar.

[0011] The present invention is further configured such that: the fixed rod passes through the movable disk, and the movable disk can move up and down relative to the fixed rod.

[0012] By adopting the above technical solution, the movable disk can move between the balance bar and the fixed bar, making the distance between the movable disk and the fixed disk adjustable.

[0013] The present invention is further configured such that the extrusion disc is made of elastic rubber material.

[0014] By adopting the above technical solution, the extrusion disc has a certain elastic deformation, which ensures that the device will not leak air when injecting air.

[0015] The present invention is further configured such that: the first limiting plate and the second limiting plate are used to fix the position of the moving plate.

[0016] By adopting the above technical solution, after adjusting the moving plate to a suitable position, the first limiting plate and the second limiting plate are screwed onto the upper and lower sides of the moving plate respectively, and the moving plate can be fixed in that position.

[0017] The present invention is further configured such that the limiting disc reaches the lowest point of the moving thread.

[0018] The present invention is further configured such that the second limiting disc reaches the highest point of the moving thread.

[0019] By adopting the above technical solution, the movement range of the first and second limiting discs is limited by the moving thread, thereby limiting the position of the moving disc, and thus limiting the movement range of the balance disc. The movement range of the balance disc is the movement range of the pushing disc and the squeezing disc. Therefore, the design of this structure essentially limits the range of air injection.

[0020] The present invention is further configured such that when the bottom of the extrusion disc is in contact with the inner bottom of the air cylinder, the bottom of the balance disc is in contact with the top of the fixed disc.

[0021] By adopting the above technical solution, it can be effectively ensured that when the extrusion disc completely pushes out the gas inside the cylinder, the balance disc is just in contact with the top of the fixed disc, and the extrusion disc will not be unable to completely push out the gas inside the cylinder due to the fixed disc restricting the movement range of the balance disc.

[0022] In summary, this utility model has the following beneficial effects:

[0023] This device is used for postoperative self-care. Medical staff can pre-set the position of the movable tray in the hospital based on the size of the implanted lacrimal duct stent, and then fix it using limiting trays one and two to determine the maximum air volume. When patients use this device at home for self-care, there is no need to adjust the position of the movable tray, avoiding the process of determining the air volume themselves. This effectively prevents patients from inaccurately controlling the gas volume when self-infusing at home, improving the scientific effectiveness of self-care. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiment of this utility model. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the overall structure of the device in the embodiment of this utility model. Figure 2 ;

[0026] Figure 3 This is a schematic diagram showing the connection between the extrusion disc, the push rod, and the push disc in an embodiment of this utility model.

[0027] In the diagram: 1. Push plate; 2. Air cylinder; 3. Moving plate; 4. Limiting plate one; 5. Moving thread; 6. Fixed plate; 7. Air port; 8. Balance plate; 9. Balance bar; 10. Push bar; 11. Extrusion plate; 12. Limiting plate two; 13. Fixed bar; 14. Locking plate. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0029] Example: A device for an inflatable lacrimal duct stent, such as... Figure 1-3 As shown, the device includes an air cylinder 2, an air inlet 7, and a compression plate 11. The compression plate 11 is slidably connected to the inner wall of the air cylinder 2. A push rod 10 is fixedly connected to the center of the top of the compression plate 11, and a push disk 1 is fixedly connected to the top of the push rod 10. The compression plate 11 is made of elastic rubber. Pushing the push disk 1 can drive the push rod 10, which in turn drives the compression plate 11, thus realizing the air intake and injection of the air cylinder 2.

[0030] The bottom of the air cylinder 2 is connected to the air inlet 7. A fixed plate 6 is arranged around the outer wall of the air cylinder 2 near the bottom. Fixed rods 13 are symmetrically arranged on both sides of the top of the fixed plate 6. The other end of the fixed rod 13 is connected to a locking plate 14. A movable plate 3 is located between the locking plate 14 and the fixed plate 6. A balance plate 8 is sleeved on the fixed rod 13. The balance plate 8 is located between the movable plate 3 and the fixed plate 6.

[0031] Balance rods 9 are symmetrically arranged on both sides of the balance disc 8. The other end of the balance rod 9 is fixedly connected to the bottom of the push disc 1. Therefore, when the push disc 1 moves, the balance rods 9 and the balance disc 8 fixedly connected to the balance rods 9 also move. When the bottom of the push extrusion disc 11 is in contact with the inner bottom of the air cylinder 2, the bottom of the balance disc 8 is in contact with the top of the fixed disc 6.

[0032] The outer wall of the air cylinder 2 is provided with a movable thread 5, and a movable disc 3 is sleeved on the movable thread 5. The balance rod 9 passes through the movable disc 3, and the movable disc 3 can move up and down relative to the balance rod 9. The fixed rod 13 passes through the movable disc 3, and the movable disc 3 can move up and down relative to the fixed rod 13.

[0033] The top of the movable disk 3 is provided with a second limiting disk 12, and the bottom of the movable disk 3 is provided with a first limiting disk 4. The first limiting disk 4 is threadedly connected to the moving thread 5 on the outer wall of the air cylinder 2. The second limiting disk 12 is also threadedly connected to the moving thread 5 on the outer wall of the air cylinder 2. The first limiting disk 4 reaches as low as the lowest point of the moving thread 5, and the second limiting disk 12 reaches as high as the highest point of the moving thread 5. The first limiting disk 4 and the second limiting disk 12 are used to fix the position of the movable disk 3.

[0034] Working Principle: Due to individual differences, the size of the lacrimal duct stent implanted during surgery will vary. Existing inflatable devices cannot control the amount of air injected. During self-care, excessive air injection can lead to high pressure within the lacrimal duct, causing damage and rupture of the lacrimal duct tissue. This device, however, allows medical staff to pre-set the air injection volume based on the implanted lacrimal duct stent, eliminating the need for patients to determine the injection volume themselves. This effectively avoids the problem of inaccurate air volume control during home inflatable device use, improving the scientific effectiveness of patient self-care.

[0035] The inflation volume of this device is set by adjusting the position of the movable disc 3. Once the position of the movable disc 3 is determined, the position of the movable disc 3 can be fixed by screwing the limiting disc 4 and the limiting disc 12 to the top and bottom of the movable disc 3 respectively and making them fit together. At this time, the movement range of the balance disc 8 is limited between the movable disc 3 and the fixed disc 6, which in turn limits the movement range of the balance rod 9 and the push disc 1 fixedly connected to it. Therefore, the movement range of the push rod 10 and the compression disc 11 fixedly connected to the push disc 1 is also limited. Thus, the maximum inflation value of this device is determined, preventing the situation where excessive inflation volume during patient self-inflation leads to excessive pressure in the lacrimal duct, causing damage or rupture of the lacrimal duct tissue.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A matching device for an inflatable lacrimal duct stent, characterized in that: The device includes an air cylinder (2), an air inlet (7), and a pressing disc (11). The pressing disc (11) is slidably connected to the inner wall of the air cylinder (2). A push rod (10) is fixedly connected to the top of the pressing disc (11), and a push disc (1) is fixedly connected to the top of the push rod (10). The bottom of the air cylinder (2) is connected to the air inlet (7). A fixing disc (6) is arranged around the outer wall of the air cylinder (2) near the bottom. Fixing rods (13) are symmetrically arranged on both sides of the top of the fixing disc (6). 3) The other end is connected to a positioning plate (14), the fixing rod (13) is sleeved with a balance plate (8), the balance plate (8) is symmetrically arranged with balance rods (9) on both sides, the other end of the balance rod (9) is fixedly connected to the bottom of the push plate (1), the outer wall of the air cylinder (2) is provided with a moving thread (5), the moving thread (5) is sleeved with a moving plate (3), the top of the moving plate (3) is provided with a second limiting plate (12), and the bottom of the moving plate (3) is provided with a first limiting plate (4).

2. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The limiting disc (4) is threadedly connected to the moving thread (5) on the outer wall of the air cylinder (2).

3. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The limiting disc 2 (12) is threadedly connected to the moving thread (5) on the outer wall of the air cylinder (2).

4. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The balance bar (9) passes through the movable disk (3), which can move up and down relative to the balance bar (9).

5. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The fixed rod (13) passes through the movable disk (3), which can move up and down relative to the fixed rod (13).

6. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The extrusion disc (11) is made of elastic rubber.

7. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The first limiting plate (4) and the second limiting plate (12) are used to fix the position of the moving plate (3).

8. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The limiting disc (4) reaches the lowest point of the moving thread (5).

9. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: The second limiting disc (12) reaches the highest point of the moving thread (5).

10. The accessory device for an inflatable lacrimal duct stent according to claim 1, characterized in that: When the bottom of the extrusion disc (11) is in contact with the inner bottom of the air cylinder (2), the bottom of the balance disc (8) is in contact with the top of the fixed disc (6).

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