Lacrimal passage dredging surgical treatment device capable of actively guiding

Abstract

The invention provides a lacrimal passage dredging surgical treatment device capable of actively guiding, which comprises an inner tube, an outer tube and a clamping mechanism, the outer tube is mounted outside the inner tube, the clamping mechanism comprises a fixing plate, a rotating plate, a fixing shell and a clamping plate, and the fixing plate is arranged on the outer tube; the rotating plate is arranged at the bottom of the fixed plate; the fixing shell is installed at the bottom of the fixing plate, and the clamping plate is arranged in the fixing shell. According to the lacrimal passage dredging operation treatment device with the active guiding function, stable rotation, stretching and retracting of the inner tube in the outer tube can be achieved through the snake bone structure of the inner tube and the traction assembly, the position and depth of the probe in the lacrimal passage can be accurately controlled, and the working efficiency is improved. Therefore, the head end of the lacrimal passage dredging device can be efficiently sent out of the nostril from the inferior nasal passage without damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lacrimal passage, and in particular to a lacrimal passage dredging surgical treatment device capable of active guidance. BACKGROUND

[0002] The drainage and discharge passage of tear fluid is composed of lacrimal punctum, lacrimal canaliculus, lacrimal common duct, lacrimal sac and nasolacrimal duct. Normal lacrimal passage drainage is that the upper and lower lacrimal puncta collect tear fluid, which is collected to the lacrimal sac through the upper and lower lacrimal canaliculi, and the lacrimal sac opens to the front end of the inferior meatus through the nasolacrimal duct. The diameter of the lacrimal punctum is about 0.2-0.3mm, which can be expanded to 5 times of the normal value. The diameter of the lacrimal canaliculus is about 0.3-0.5mm, which can be expanded to 3-5 times of the normal value. The nasolacrimal duct is about 17mm long and about 3-7mm in diameter. The lower end opening is located at the junction of the front 1 / 3 and the rear 2 / 3 of the inferior meatus, which is equivalent to 16mm behind the front end of the inferior turbinate, 17mm above the nasal floor, and about 30mm from the outer edge of the anterior naris. The bone nasolacrimal duct is slightly downward, slightly backward and slightly outward. The opening of the nasolacrimal duct in the inferior meatus has great variation, which can be forward or backward.

[0003] Each narrow part of the lacrimal passage is prone to obstruction. When it is obstructed, it can cause epiphora or inflammation of the lacrimal passage. Therefore, when the lacrimal passage is obstructed, it needs to be effectively dredged in time, and a lacrimal passage drainage stent such as a silicone drainage tube is placed in the lacrimal passage to expand and drain, so as to achieve lacrimal passage dredging and repair.

[0004] At present, there are two commonly used methods for lacrimal passage dredging and drainage tube placement in clinical practice: For upper lacrimal passage obstruction, i.e. obstruction of lacrimal punctum, lacrimal canaliculus and lacrimal common duct, because the tube diameter is small, a lacrimal passage probe is used to perform lacrimal passage probing, and then a silicone drainage tube is placed. The two ends of the silicone drainage tube are fixed on two thin guide probes respectively, and are inserted from the upper and lower lacrimal puncta respectively, and pass through the upper and lower lacrimal canaliculi, lacrimal common duct, lacrimal sac and nasolacrimal duct to reach the lower end of the nasolacrimal duct and the nasal cavity. However, due to the narrowness and large curvature of the lower end of the nasolacrimal duct, the head of the probe is difficult to pass through this place and enter the nasal cavity and slide out of the nostril. Therefore, a hook needle with a hook at the end is needed to extend into the lower end of the nasolacrimal duct from the nostril, hook the head of the probe, then pull out the hook needle from the nasal cavity, then pull out the probe and the end of the lacrimal passage drainage tube from the nostril, and finally separate the lacrimal passage drainage tube from the probe to complete the placement of the lacrimal passage drainage tube.

[0005] Because the diameter of the stents that can be inserted during antegrade intubation is too small to effectively support and dilate the nasolacrimal duct, a drainage tube with a diameter of approximately 3-4 mm is usually inserted through a retrograde intubation method after the nasolacrimal duct is cleared and dilated. A tear duct probe with a guide wire is inserted through the lacrimal punctum to the opening of the nasolacrimal duct in the inferior nasal meatus. The guide wire is then passed through the probe into the gap in the inferior nasal meatus and removed with a hook. After removal, the drainage tube is pulled back through the nostril and fixed in the nasolacrimal duct and lacrimal sac using the guide wire.

[0006] Existing guide wires are mostly made of memory metals such as titanium alloy. For example, a guide wire is folded in half and sent into a probe. After it is hooked out, the drainage tube wire is clamped with the head end, or it can be made into various shapes such as spirals and hooks. The above design is to make it easy for the hook needle to find the guide wire from the inferior nasal meatus and hook it out. However, due to the thin and soft nature of the guide wire, and the large variation in the direction of the opening of the nasolacrimal duct in the inferior nasal meatus, in clinical practice, in many cases, after the guide wire is sent out from the probe, it will encounter resistance and deviate backward to the throat area. It may also be twisted and folded, hiding in the gap of the inferior nasal meatus. After the above situation occurs, it will be more blind to hook the guide wire and rely on the feel of the hand. It often needs to be hooked multiple times, which has a high probability of damaging the nasal mucosa, prolonging the operation time, and increasing the risk of surgery. Summary of the Invention

[0007] The present invention aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0008] To this end, one purpose of the present invention is to propose an actively guided tear duct clearing surgical treatment device, which can achieve stable rotation and extension of the inner tube inside the outer tube through the snake-bone structure and traction assembly of the inner tube, and can accurately control the position and depth of the probe in the tear duct, so that the head end of the tear duct clearing device can be efficiently and non-damagedly delivered from the inferior nasal meatus to the outside of the nostril.

[0009] To achieve the above-mentioned purpose, the first aspect of the present invention proposes an actively guided tear duct clearing surgical treatment device, comprising: an inner tube, an outer tube and a clamping mechanism, wherein the outer tube is installed on the outside of the inner tube, and the clamping mechanism includes a fixed plate, a rotating plate, a fixed shell and a clamping plate, wherein the fixed plate is arranged on the outer tube; the rotating plate is arranged at the bottom of the fixed plate; the fixed shell is installed at the bottom of the fixed plate, and the clamping plate is arranged inside the fixed shell.

[0010] In addition, the active guide lacrimal duct dredging surgical treatment device proposed above may also have the following additional technical features: Specifically, a limiting groove is provided on the bottom wall of the clamping plate.

[0011] Specifically, the inside of the inner tube is provided with a traction assembly, the inner side surface of the inner tube is provided with a connecting block, the inner side wall of the connecting block is provided with a traction wire, the inner side wall of the connecting block is fixedly connected with a limiting column, and the inner side surface of the inner tube is provided with limiting rings at equal intervals.

[0012] Specifically, the other end of the snake bone is connected with the probe.

[0013] Specifically, the inside of the probe is provided with a monitoring mechanism, the monitoring mechanism comprises an extension block, a telescopic block and a monitoring head, the extension block is arranged in the inside of the probe, the telescopic block is slidably connected in the inside of the extension block, and the monitoring head is fixed to one end of the telescopic block.

[0014] Specifically, a camera is arranged on the outer wall of the extension block.

[0015] Specifically, a limiting block is fixed on the clamping plate.

[0016] Compared with the prior art, the present application has the following beneficial effects: the snake bone structure and the traction assembly of the inner tube realize the stable rotation and telescopic movement of the inner tube in the inner tube, so that the position and depth of the probe in the lacrimal duct can be accurately controlled. At the same time, the flexibility and plasticity of the snake bone ensure that the probe can be flexibly adjusted according to the curved direction of the lacrimal duct, greatly improving the accuracy and safety of the operation.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 Structure schematic view of a kind of actively guided lacrimal passage dredging surgical treatment device according to one embodiment of the present application; Figure 2 Structure schematic view of the clamping mechanism of a kind of actively guided lacrimal passage dredging surgical treatment device according to one embodiment of the present application; Figure 3 Structure schematic view of the clamping mechanism of a kind of actively guided lacrimal passage dredging surgical treatment device according to one embodiment of the present application; Figure 4 Structure schematic view of the traction assembly of a kind of actively guided lacrimal passage dredging surgical treatment device according to one embodiment of the present application; Figure 5Structure diagram of a snake bone and a probe cooperation structure of an actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application; Figure 6 Structure diagram of a monitoring mechanism of an actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application; Figure 7 Structure diagram of an actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application; Figure 4 Structure diagram of an actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application; Figure 8 Structure diagram of an actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application; Figure 4 Structure diagram of an actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application;

[0019] The figure mark: 1, inner tube; 2, outer tube; 3, clamping mechanism; 31, fixed plate; 32, rotating plate; 33, fixed shell; 34, clamping plate; 35, limiting block; 36, limiting groove; 4, traction assembly; 41, connecting block; 42, traction wire; 43, limiting column; 44, limiting ring; 5, outer tube extension; 6, snake bone; 7, probe; 8, monitoring mechanism; 81, extension block; 82, telescopic block; 83, camera; 84, monitoring head. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0021] An actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0022] As shown in Figure 1 - Figure 8 An actively guided lacrimal passage unblocking surgical treatment device according to an embodiment of the present application comprises an inner tube 1, an outer tube 2 and a clamping mechanism 3, the outer tube 2 is installed outside the inner tube 1, the clamping mechanism 3 comprises a fixed plate 31, a rotating plate 32, a fixed shell 33 and a clamping plate 34, the fixed plate 31 is arranged on the outer tube 2; the rotating plate 32 is arranged at the bottom of the fixed plate 31; the fixed shell 33 is installed at the bottom of the fixed plate 31, and the clamping plate 34 is arranged inside the fixed shell 33.

[0023] A limiting block 35 is fixed on the clamping plate 34.

[0024] A limiting groove 36 is formed on the bottom wall of the clamping plate 34.

[0025] Specifically, in use, first, the rotating plate 32 is pulled, the rotating plate 32 rotates to drive the fixed shell 33 at the bottom of the fixed plate 31 and the clamping plate 34 to rotate, so that the clamping plate 34 can be attached to the inner tube 1, then the position of the clamping plate 34 is limited through cooperation of the limiting block 35 and the limiting groove 36, so that the clamping plate 34 is prevented from loosening during use, the stability of the device is affected, and the inner tube 1 can stably rotate 360 degrees in the inner tube 2 without being separated.

[0026] It should be noted that the purpose of the outer tube 2 in the present application is to wrap the inner tube. Because the head of the inner tube 1 is soft and cannot maintain a straight state, the probe should not be soft and randomly bent during the probing of the lacrimal passage (otherwise the snake bone is easy to twist in the lacrimal passage and cannot descend), so the front part of the probing operation needs a straight outer tube to wrap, at the same time, the snake bone part of the inner tube 1 is hidden in the outer tube 2 during the probing, because it should not be soft and bent during the probing. After reaching the inferior meatus, the head end of the inner tube 1 is stretched out of the outer tube, actively controlling the bending to proceed to the nostril direction In an embodiment of the present application, as shown in Figure 4 、 Figure 7 and Figure 8 , a traction assembly 4 is arranged in the inner tube 1, a connecting block 41 is arranged on the inner side surface of the inner tube 1, a traction wire 42 is arranged on the inner side wall of the connecting block 41, a limiting column 43 is fixedly connected to the inner side wall of the connecting block 41, and limiting rings 44 are arranged at equal intervals on the inner side surface of the inner tube 1.

[0027] Specifically, when traction is needed, the operator pulls the traction wire 42 to pass through the bottom ring, drives the limiting column 43 between the connecting blocks 41, so that the inner tube 1 can be inclined to one direction, and the limiting rings 44 can ensure that the traction wire 42 does not cross in the inner tube 1.

[0028] In an embodiment of the present application, as shown in Figure 5 , the other end of the snake bone 6 is connected with the probe 7.

[0029] It can be understood that the probe 7 is a key component for lacrimal passage probing, which is designed to be exquisite and powerful. The front end of the probe 7 is round and blunt (not easy to scratch and damage the mucosa), so as to reduce friction and damage in the lacrimal passage and ensure smooth passage through the narrow area of the lacrimal passage. The high-precision sensor is embedded in the inner tube 7, which can monitor the key parameters such as pressure, temperature and humidity in the lacrimal passage in real time, provide detailed surgical feedback information for doctors, and help doctors more accurately judge the state of the lacrimal passage and the effect of the operation.

[0030] In an embodiment of the present application, as shown in Figure 6As shown, the inside of the probe 7 is provided with a monitoring mechanism 8, which comprises an extension block 81, a telescopic block 82 and a monitoring head 84, the extension block 81 is arranged in the inside of the probe 7, the telescopic block 82 is slidingly connected in the inside of the extension block 81, and the monitoring head 84 is fixed at one end of the telescopic block 82.

[0031] A camera 83 is arranged on the outer wall of the extension block 81.

[0032] Specifically, when it is necessary to dredge the lacrimal passage, the monitoring mechanism 8 is started, the telescopic block 82 in the inside of the extension block 81 will be extended or shortened according to the bending degree of the lacrimal passage, driving the monitoring head 84 to comprehensively scan and monitor the inner wall of the lacrimal passage. At the same time, the camera 83 will also capture the images inside the lacrimal passage in real time, providing the doctor with an intuitive surgical field of vision, helping the doctor to more accurately judge the obstruction condition and dredging effect of the lacrimal passage. This design not only improves the accuracy and safety of the operation, but also greatly reduces the operation difficulty and labor intensity of the doctor.

[0033] Working principle: in use, first, the device is fixed on the inner tube 1 through the clamping mechanism 3, and it is ensured that the inner tube 1 can freely rotate in the outer tube 2 and will not fall off. Then, the doctor inserts the device into the lacrimal passage through the patient's punctum, and adjusts the length of the inner tube 1 protruding out of the outer tube 2 according to the need, so as to adapt to the length and bending degree of the lacrimal passage of different patients. Then, the doctor uses the flexibility and plasticity of the snake bone 6 to conform to the bending trend of the lacrimal passage, and sends the probe 7 to the blocked part of the lacrimal passage. During the dredging process, the monitoring mechanism 8 starts to work, the telescopic block 82 is extended or shortened according to the bending degree of the lacrimal passage, driving the monitoring head 84 to comprehensively scan and monitor the inner wall of the lacrimal passage, and the camera 83 captures the images inside the lacrimal passage in real time, providing the doctor with an intuitive surgical field of vision. The doctor judges the obstruction condition and dredging effect of the lacrimal passage according to the information fed back by the monitoring mechanism 8 and the images captured by the camera 83, and performs corresponding operation. When the lacrimal passage is probed, the inner tube 1 is hidden in the outer tube 2, only the head end is exposed, and after the head end is probed to the outlet of the nasolacrimal duct and enters the inferior meatus, the inner tube 1 is sent out and actively controlled to run towards the anterior naris, and the direction can be adjusted when encountering resistance, and then the drainage tube guide wire is inserted into the first snake bone 6 reserved aperture, the inner tube 1 is retreated to the nasolacrimal duct opening, and then the wire is pulled out to the punctum, and then the lacrimal passage drainage tube is pulled into the nasolacrimal duct by pulling the wire. When the dredging is completed, the doctor pulls out the device from the lacrimal passage, and the whole operation process is completed.

[0034] In summary, the active guiding lacrimal passage dredging surgical treatment device in the embodiment of the present application can realize the stable rotation and expansion of the inner tube 1 in the outer tube 2 by the stable clamping of the inner tube 1 by the clamping mechanism 3, the combination of the snake bone structure of the inner tube and the traction assembly, so as to accurately control the position and depth of the probe 7 in the lacrimal passage. At the same time, the flexibility and plasticity of the snake bone 6 ensure that the probe 7 can be flexibly adjusted according to the curved direction of the lacrimal passage, greatly improving the accuracy and safety of the operation.

[0035] In the description of the present specification, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0036] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0037] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and deformations to the above embodiments within the scope of the present application.

Claims

1. An actively guided lacrimal duct dredging surgical treatment device, characterized in that: include: An inner tube (1), an outer tube (2) and a clamping mechanism (3), wherein the outer tube (2) is mounted on the outside of the inner tube (1), and the clamping mechanism (3) comprises a fixed plate (31), a rotating plate (32), a fixed shell (33) and a clamping plate (34), wherein the fixed plate (31) is arranged on the outer tube (2); the rotating plate (32) is arranged at the bottom of the fixed plate (31); the fixed shell (33) is mounted on the bottom of the fixed plate (31), and the clamping plate (34) is arranged inside the fixed shell (33).

2. The active guide lacrimal duct dredging surgical treatment device according to claim 1, characterized in that: A limiting groove (36) is provided on the bottom wall of the clamping plate (34).

3. The active-guided lacrimal duct dredging surgical treatment device according to claim 1, characterized in that: A traction assembly (4) is provided inside the inner tube (1), a connecting block (41) is installed on the inner surface of the inner tube (1), a traction wire (42) is provided on the inner wall of the connecting block (41), a limiting column (43) is fixedly connected to the inner wall of the connecting block (41), and limiting rings (44) are provided at equal intervals on the inner surface of the inner tube (1).

4. The active-guided lacrimal duct dredging surgical treatment device according to claim 5, characterized in that: The other end of the snake bone (6) is connected to the probe (7).

5. The active-guided lacrimal duct dredging surgical treatment device according to claim 6, characterized in that: A monitoring mechanism (8) is provided inside the probe (7), and the monitoring mechanism (8) comprises an extension block (81), a telescopic block (82), and a monitoring head (84). The extension block (81) is provided inside the probe (7), the telescopic block (82) is slidably connected inside the extension block (81), and the monitoring head (84) is fixed to one end of the telescopic block (82).

6. The active-guided lacrimal duct dredging surgical treatment device according to claim 7, characterized in that: A camera (83) is provided on the outer wall of the extension block (81).

7. The active-guided lacrimal duct dredging surgical treatment device according to claim 1, characterized in that: A limiting block (35) is fixed on the clamping plate (34).

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