Focus flushing and drainage device under foramen intervertebrale endoscope
By designing a drainage device adapted to the working sleeve of the perforoscopic cannula, the problems of insufficient rigidity and positioning of the ordinary drainage tube are solved, efficient and safe drainage and flushing of intervertebral foramen lesions are achieved, and the risk and time of surgery are reduced.
Patent Information
- Application Number
- CN202510920776.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2025-08-12
AI Technical Summary
There is a lack of special drainage devices for adapting to the working casing of the orifice lens in clinical practice. The ordinary drainage tube is difficult to match the inner diameter of the working casing, is prone to bend and broken, lacks rigid support, and cannot quickly separate the working casing of the orifice lens after the casing is placed. There is insufficient development marking, which increases the risk of puncture tract damage and prolongs the operation time.
A drainage device foramen lesions under intervertebral foramen is designed, including drainage tube body, flushing guide tube body, protective tube body and lead wire. The development of lead wire improves positioning accuracy, the liquid discharge pipe can be designed in a detachable manner, and the multi-channel liquid parameter monitoring system is used to warn of lesions in real time. The hard material of the drainage tube body does not require guide wire support, and the dual-channel physical isolation prevents cross-contamination.
It improves the accuracy and safety of puncture catheterization, reduces the operation time, reduces the risk of neurovascular damage, ensures sufficient drainage and quickly separates the orifice working cannula, monitors and warns of lesions in real time, and prevents misunderstandings.
Smart Images
Figure CN120459434A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of perforaminal endoscopic surgery flushing and drainage, and in particular to a perforaminal endoscopic lesion flushing and drainage device. Background Art
[0002] Perforaminal endoscopic lesion debridement and drainage is a minimally invasive core technology for the treatment of spinal lesions such as lumbar disc infection. A working channel is established through percutaneous puncture, and the infection focus is removed and pus is continuously drained under direct vision of the perforaminal endoscope. This procedure relies on special instruments to achieve precise flushing and drainage, and its operational efficiency and safety directly affect the patient's prognosis.
[0003] In current clinical practice, there is a lack of dedicated drainage devices that are compatible with the endoscopic working cannula, and ordinary drainage tubes are often forced to be temporarily modified. Ordinary soft drainage tubes are difficult to match the inner diameter of the working cannula, are prone to bending and breaking during surgery, and lack rigid support, resulting in the need to rely on guidewire guidance during insertion, increasing the risk of nerve and blood vessel damage in the puncture tract. There is no dedicated adapter designed for the end of the drainage tube, and the endoscopic working cannula cannot be quickly separated after insertion. Forced removal of the tube can easily cause displacement or tissue traction, significantly prolonging the operation time. The modified tube lacks a visual marker, and the position of the tube end cannot be confirmed in real time by fluoroscopy during surgery, which can easily lead to insufficient drainage or accidental injury.
[0004] Therefore, in order to improve the accuracy, operational efficiency and surgical safety of puncture and catheterization, a percutaneous endoscopic lesion irrigation and drainage device was proposed. Summary of the Invention
[0005] The purpose of the present invention is to provide a lesion flushing and drainage device under a percutaneous endoscopic approach to solve the problems of insufficient rigidity, positioning blind spots and operational connection obstacles of ordinary modified tubes.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a percutaneous endoscopic lesion flushing and drainage device, comprising a drainage tube body, a liquid inlet groove is provided on the outer side of the top of the drainage tube body, and a flushing guide tube body is provided in the inner center of the drainage tube body, a flushing hole is provided on the top curved surface of the drainage tube body, a protective capillary is provided on the outer surface of the drainage tube body, and a lead wire is installed inside the protective capillary, a connecting rod is fixedly installed at the bottom end of the lead wire, and a through hole is provided on the connecting rod, a liquid discharge pipe is installed below the drainage tube body, and a positioning ring is provided on the outer side of the top of the liquid discharge pipe, and a rubber barrier plug is sealed and clamped at the bottom end of the liquid discharge pipe.
[0007] Preferably, the internal space of the liquid inlet groove is interconnected with the space formed by the inner wall of the drainage tube body and the outer wall of the flushing guide tube body, the flushing hole is interconnected with the internal space of the flushing guide tube body, the flushing holes are distributed at equal angles at the top of the drainage tube body, and the liquid inlet grooves are symmetrically distributed on the drainage tube body.
[0008] Preferably, the lead wire is connected to the connecting rod by being embedded and fixed, and the lead wire is connected to the protective capillary by being slidingly connected. The connecting rod is connected to the protective capillary by being snap-fitted, and the diameter of the connecting rod is larger than the diameter of the lead wire, and the top end of the lead wire is located above the top end point of the drainage tube body.
[0009] Preferably, a flushing connecting pipe is installed in the inner center of the liquid discharge pipe, and the arc-shaped corner of the bottom end of the flushing connecting pipe passes through the outer surface of the liquid discharge pipe. The end of the flushing connecting pipe is sealed and clamped with a removable blocking plug. A reinforcing straight rod is installed through the top of the flushing connecting pipe, and the end of the reinforcing straight rod is connected to the liquid discharge pipe in a sealed manner.
[0010] Preferably, the reinforcing straight rod is connected to the flushing connecting pipe by hot melt fixation, and the flushing connecting pipe is connected to the liquid discharge pipe by hot melt fixation. The length of the reinforcing straight rod is equal to the top outer edge of the liquid discharge pipe, and the liquid discharge pipe is connected to the drainage tube body by sealed engagement. The outer diameter of the drainage tube body is equal to the outer diameter of the positioning ring body, and the end face of the reinforcing straight rod is connected to the inner wall of the drainage tube body by extrusion fit.
[0011] Preferably, the top end face of the flushing connecting tube is higher than the top end face of the liquid discharge tube, the top end of the flushing connecting tube and the bottom end of the flushing guide tube body are connected in a sealed manner, and the internal space of the flushing connecting tube and the internal space of the liquid discharge tube are not connected to each other.
[0012] Preferably, three groups of liquid sensors are embedded and fixedly installed inside the reinforcement straight rod, and the three groups of liquid sensors include a first liquid sensor, a second liquid sensor and a third liquid sensor; The first liquid sensor and the second liquid sensor are located at both ends of the reinforced straight rod, on both sides of the internal inlet of the liquid discharge pipe, and detect the flow rate, flow velocity and dynamic change rate of the drainage liquid in real time; The third liquid sensor is located at the middle end of the reinforced straight rod and is set in the inner center of the liquid discharge pipe to detect the pressure fluctuation and instantaneous flow of the flushing liquid in real time; The three groups of liquid sensors are connected to the wireless transmission module at the positioning ring body through micro wires in the reinforced straight rod to form a multi-channel liquid parameter monitoring system.
[0013] Preferably, the first liquid sensor and the second liquid sensor are ultrasonic Doppler flow sensors, and the third liquid sensor is a differential pressure-flow composite sensor, and the three sensors synchronously generate a dynamic correlation curve of drainage fluid flow rate-flushing fluid pressure.
[0014] Preferably, the multi-channel liquid parameter monitoring system is configured as follows: When the drainage fluid flow rate change rate is lower than the threshold value X or the flushing fluid pressure fluctuation value exceeds the threshold value Y, the wireless transmission module is triggered to send a lesion blockage warning signal to the external terminal; The threshold value X is dynamically set according to the lesion volume of the preoperative intervertebral foramen CT three-dimensional reconstruction, and the threshold value Y is calculated and determined according to the ratio of the diameter of the irrigation guide tube body to the total cross-sectional area of the irrigation connection tube.
[0015] Preferably, the outer surfaces of the first liquid sensor and the second liquid sensor are covered with a nano-hydrophobic coating, and the liquid sensor probes extend 0.8-1.2 mm from the outer surface of the reinforced straight rod; the detection ends of the first liquid sensor and the second liquid sensor are arranged at an angle of 30° to the outer surface of the reinforced straight rod, forming a drainage liquid vortex enhanced detection structure.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Built-in lead wire development improves positioning accuracy. The lead wire inside the protective capillary is developed throughout the operation. X-ray fluoroscopy directly confirms the position of the top of the drainage tube, eliminating the risk of insufficient drainage or accidental injury caused by positioning blind spots. The protective capillary and protective capillary are located above the top end point of the drainage tube, improving the accuracy of the overall development position.
[0017] 2. The detachable drainage tube optimizes surgical connection. The liquid drainage tube is sealed and engaged with the drainage tube body through the positioning ring. It can be detached during surgery, allowing the endoscopic working cannula to be quickly and without resistance, avoiding tissue traction caused by operational complexity.
[0018] 3. The multi-channel liquid parameter monitoring system warns of lesion blockage. The first and second liquid sensors detect the drainage fluid flow rate change rate in real time, and the third liquid sensor synchronously monitors the flushing fluid pressure fluctuation. The three groups of sensors transmit data to the wireless transmission module through micro-wires inside the reinforced straight rod, and dynamic correlation curve analysis triggers lesion blockage warning.
[0019] 4. Double-channel physical isolation prevents cross contamination. The inner wall of the drainage tube and the outer wall of the flushing guide tube form the drainage channel. The flushing guide tube body is independently connected to the flushing connecting tube; the two channels are hot-melt fixed and sealed, and are not connected to each other to prevent the flushing fluid from mixing with the drainage fluid.
[0020] 5. The drainage tube is made of a one-piece hard material with a diameter of ≤7mm. It can be inserted into the borescope working sleeve without the support of a guide wire. The reinforced straight rod is hot-melt fixed inside the irrigation connection tube, and the end is squeezed to fit the inner wall of the drainage tube to prevent the tube from breaking or deforming.
[0021] 6. The surface of the third liquid sensor is covered with a nano-hydrophobic coating, and the probe extends out of the surface of the reinforced straight rod to avoid adhesion and clogging. The detection ends of the first and second liquid sensors are tilted at a 30° angle to enhance the sensitivity of eddy current signal capture. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the overall combined three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall split three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the split three-dimensional structure of the lead wire of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the internal structure of the drainage tube body of the present invention; Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the liquid discharge pipe and the flushing connection pipe of the present invention.
[0023] In the figure: 1. Drainage tube body; 2. Liquid inlet trough; 3. Flushing guide tube body; 4. Flushing hole; 5. Protective capillary tube; 6. Lead wire; 7. Connecting rod; 8. Liquid discharge pipe; 9. Positioning ring; 10. Rubber barrier plug; 11. Flushing connecting tube; 12. Removable barrier plug; 13. Reinforcement straight rod. DETAILED DESCRIPTION
[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] See also Figures 1 to 5 The present invention provides a technical solution: a percutaneous endoscopic lesion flushing and drainage device, comprising a drainage tube body 1, a liquid inlet groove 2 is provided on the top outer side of the drainage tube body 1, and a flushing guide tube body 3 is provided in the inner center of the drainage tube body 1, a flushing hole 4 is provided on the top curved surface of the drainage tube body 1, a protective capillary 5 is provided on the outer surface of the drainage tube body 1, and a lead wire 6 is installed inside the protective capillary 5, a connecting rod 7 is fixedly installed at the bottom end of the lead wire 6, and a through hole is provided on the connecting rod 7, a liquid discharge pipe 8 is installed below the drainage tube body 1, and a positioning ring body 9 is provided on the top outer side of the liquid discharge pipe 8, and a rubber barrier plug 10 is sealed and clamped at the bottom end of the liquid discharge pipe 8.
[0026] The internal space of the liquid inlet groove 2 is interconnected with the space formed by the inner wall of the drainage tube body 1 and the outer wall of the flushing guide tube body 3. The flushing hole 4 is interconnected with the internal space of the flushing guide tube body 3. The flushing holes 4 are distributed at equal angles at the top of the drainage tube body 1. The liquid inlet grooves 2 are symmetrically distributed on the drainage tube body 1. The liquid inlet grooves 2 are symmetrically distributed, which doubles the adsorption area of the inner wall of the drainage tube body 1 and reduces the probability of blockage.
[0027] The connection between the lead wire 6 and the connecting rod 7 is an inlaid fixation, and the connection between the lead wire 6 and the protective capillary 5 is a sliding connection. The connection between the connecting rod 7 and the protective capillary 5 is a snap-fit connection, and the diameter of the connecting rod 7 is larger than the diameter of the lead wire 6. The top end of the lead wire 6 is located above the top end point of the drainage tube body 1. The lead wire 6 is slidably connected to the protective capillary 5. The diameter of the connecting rod 7 is larger than the lead wire 6. The snap-fitting protective capillary 5 prevents the lead wire 6 from falling off. At the same time, the top end of the lead wire 6 is located above the drainage tube body 1, thereby improving the accuracy of the development position.
[0028] A flushing connecting pipe 11 is installed in the inner center of the liquid discharge pipe 8, and the arc-shaped corner of the bottom end of the flushing connecting pipe 11 passes through the outer surface of the liquid discharge pipe 8. The end of the flushing connecting pipe 11 is sealed and clamped with a removable blocking plug 12. A reinforcing straight rod 13 is installed through the top of the flushing connecting pipe 11, and the end of the reinforcing straight rod 13 is connected to the liquid discharge pipe 8 in a sealed manner. The removable blocking plug 12 facilitates the sealing of the flushing connecting pipe 11 and can provide protection when flushing is not in progress.
[0029] The connection method of the reinforcing straight rod 13 and the flushing connecting pipe 11 is hot-melt fixing, and the connection method of the flushing connecting pipe 11 and the liquid discharge pipe 8 is hot-melt fixing. The length of the reinforcing straight rod 13 is equal to the top outer part of the liquid discharge pipe 8, and the connection method of the liquid discharge pipe 8 and the drainage tube body 1 is sealed and clamped. The outer diameter of the drainage tube body 1 is equal to the outer diameter of the positioning ring body 9. The end end face of the reinforcing straight rod 13 is connected to the inner wall of the drainage tube body 1 by extrusion fitting. The hot-melt fixing of the reinforcing straight rod 13 can enhance the structural strength of the liquid discharge pipe 8 and the flushing connecting pipe 11, facilitate the installation of the flushing connecting pipe 11, and reduce the occurrence of center dislocation. The end of the reinforcing straight rod 13 is squeezed and fitted to the inner wall of the drainage tube body 1 to prevent deformation of the tube body. At the same time, the clamping reinforcement work is performed. The outer diameter of the positioning ring body 9 matches the drainage tube body 1 to ensure a sealed clamping without leakage.
[0030] The top end face of the flushing connecting tube 11 is higher than the top end face of the liquid discharge tube 8. The top end of the flushing connecting tube 11 is connected to the bottom end of the flushing guide tube body 3 in a sealed engagement. The internal space of the flushing connecting tube 11 and the internal space of the liquid discharge tube 8 are not connected to each other. The top end of the flushing connecting tube 11 is higher than the liquid discharge tube 8, which facilitates the sealed engagement between the flushing connecting tube 11 and the flushing guide tube body 3, maintains the pressure stability of the flushing passage, and prevents the flushing liquid from entering the internal channel of the drainage tube body 1.
[0031] Three groups of liquid sensors are embedded and fixed inside the reinforcement straight rod 13, and the three groups of liquid sensors include a first liquid sensor, a second liquid sensor and a third liquid sensor; The first liquid sensor and the second liquid sensor are located at both ends of the reinforcement straight rod 13, located on both sides of the internal inlet of the liquid discharge pipe 8, and detect the flow rate, flow velocity and dynamic change rate of the drainage liquid in real time; The third liquid sensor is located at the middle end of the reinforcement rod 13 and is set in the inner center of the liquid discharge pipe 8 to detect the pressure fluctuation and instantaneous flow of the flushing liquid in real time; The three groups of liquid sensors are connected to the wireless transmission module at the positioning ring body 9 through micro wires in the reinforced straight rod 13, forming a multi-channel liquid parameter monitoring system; The first liquid sensor and the second liquid sensor in the reinforced straight rod 13 monitor the flow rate change rate of the drainage liquid at the inlet of the liquid discharge pipe 8 in real time. The third liquid sensor is located in the middle section of the reinforced straight rod 13 and synchronously detects the pressure fluctuation in the flushing connection pipe 11. The multi-sensor data dynamically generates a flow rate-pressure correlation curve.
[0032] The first liquid sensor and the second liquid sensor are ultrasonic Doppler flow sensors, and the third liquid sensor is a differential pressure-flow composite sensor. The three simultaneously generate a dynamic correlation curve between drainage fluid flow rate and flushing fluid pressure. The ultrasonic Doppler flow sensor accurately captures low-flow rate drainage fluid signals, and the differential pressure-flow composite sensor compositely detects flushing fluid pressure and flow parameters.
[0033] The multi-channel liquid parameter monitoring system is configured as: When the drainage fluid flow rate change rate is lower than the threshold value X or the flushing fluid pressure fluctuation value exceeds the threshold value Y, the wireless transmission module is triggered to send a lesion blockage warning signal to the external terminal; The threshold value X is dynamically set based on the lesion volume of the preoperative intervertebral foramen CT three-dimensional reconstruction, and the threshold value Y is calculated and determined based on the ratio of the diameter of the irrigation guide tube 3 to the total cross-sectional area of the irrigation connection tube 11; The threshold value X is set based on the preoperative CT three-dimensional reconstruction of the lesion volume, and the drainage fluid attenuation risk is individually determined. The threshold value Y is calculated based on the cross-sectional area ratio of the irrigation guide tube 3 and the irrigation connection tube 11, and the irrigation pressure safety range is dynamically adapted.
[0034] The outer surfaces of the first liquid sensor and the second liquid sensor are covered with a nano-hydrophobic coating, and the liquid sensor probes extend outward from the outer surface of the reinforced straight rod 13 by 0.8-1.2 mm; the detection ends of the first liquid sensor and the second liquid sensor are arranged at an angle of 30° to the outer surface of the reinforced straight rod 13, forming a drainage liquid vortex enhanced detection structure, and the first liquid sensor and the second liquid sensor probes protrude outward by 0.8-1.2 mm + nano-hydrophobic coating to prevent pus adhesion and cause detection distortion. The 30° inclination arrangement enhances the sensitivity of eddy current signal capture and improves the accuracy of small flow recognition.
[0035] The working principle of the present invention: According to Figure 1-Figure 5First, preoperative assembly and tube positioning are performed. The lead wire 6 is inserted into the protective thin tube 5 so that the top of the lead wire 6 is 1.5 mm above the top curved surface of the drainage tube body 1. It is fixed with the protective thin tube 5 through the connecting rod 7. The liquid discharge tube 8 is sealed and fitted with the bottom surface of the drainage tube body 1 through the positioning ring 9. At the same time, the liquid discharge tube 8 is sealed and fitted with the drainage tube body 1. At the same time, the liquid discharge tube 8 drives the top of the flushing connecting tube 11 to be sealed and fitted with the flushing guide tube body 3 to maintain the isolation of the two channels. The flushing connecting tube 11 is kept stable in the center by the reinforcing straight rod 13, which is convenient for docking and assembly. The rubber blocking plug 10 closes the outlet of the end of the liquid discharge tube 8, and the detachable blocking plug 12 closes the inlet of the flushing connecting tube 11. During the operation, the drainage tube body is integrally formed of a hard material with a diameter of ≤7mm. The assembled device is pushed along the endoscopic working cannula to the lesion area. The position of the tip of the lead wire 6 is confirmed by X-ray fluoroscopy and adjusted to the center of the lesion. Pus is sucked into the inner cavity of the drainage tube body 1 through the liquid inlet groove 2 and flows into the liquid discharge pipe 8. The detachable rubber barrier plug 10 is combined with the collection sealing bag to collect the liquid. The flushing liquid is injected through the inlet of the flushing connecting tube 11 and sprayed in a circular manner toward the lesion area through the flushing guide tube body 3 from the flushing holes 4 distributed at equal angles at the top; The sensors detect in real time. The first and second liquid sensors monitor the flow rate change rate of the pus on both sides of the inlet of the liquid discharge pipe 8. The nano-hydrophobic coating prevents pus from adhering to the probe. The 30° inclination design enhances the capture of low-flow rate signals. The third liquid sensor detects the pressure fluctuation in the flushing connection pipe 11. The sensor data is transmitted to the wireless transmission module at the positioning ring body 9 via the wire inside the reinforced straight rod 13. If the drainage fluid flow rate change rate is lower than the threshold value X or the flushing fluid pressure exceeds the threshold value Y, a blockage warning is immediately sent to the external terminal. Remove the rubber barrier plug 10 at the end of the liquid discharge tube 8, temporarily open the drainage channel to release the negative pressure, separate the liquid discharge tube 8 and the drainage tube body 1 along the positioning ring body 9, expose the bottom port of the drainage tube body 1, and directly pull out the endoscopic working sleeve. At this time, only the drainage tube body 1 remains in the lesion area. After the operation, re-engage the liquid discharge tube 8 to the drainage tube body 1 through the positioning ring body 9, close the rubber barrier plug 10, resume continuous drainage, connect the negative pressure suction device through the liquid discharge tube 8, and the sensor continuously monitors the drainage status.
[0036] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.
[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A device for irrigating and draining lesions under a transforaminal endoscopic approach, comprising a drainage tube (1), characterized in that: The top outer side of the drainage tube body (1) is provided with a liquid inlet groove (2), and the inner center of the drainage tube body (1) is provided with a flushing guide tube body (3), the top curved surface of the drainage tube body (1) is provided with a flushing hole (4), the outer surface of the drainage tube body (1) is provided with a protective capillary (5), and a lead wire (6) is installed inside the protective capillary (5), the bottom end of the lead wire (6) is fixedly installed with a connecting rod (7), and a through hole is provided on the connecting rod (7), a liquid discharge pipe (8) is installed below the drainage tube body (1), and a positioning ring body (9) is provided on the top outer side of the liquid discharge pipe (8), and the bottom end of the liquid discharge pipe (8) is sealed and clamped with a rubber barrier plug (10).
2. The transforaminal endoscopic lesion irrigation and drainage device according to claim 1, characterized in that: The internal space of the liquid inlet groove (2) is interconnected with the space formed by the inner wall of the drainage tube body (1) and the outer wall of the flushing guide tube body (3), and the flushing holes (4) are interconnected with the internal space of the flushing guide tube body (3). The flushing holes (4) are distributed at equal angles on the top of the drainage tube body (1), and the liquid inlet grooves (2) are symmetrically distributed on the drainage tube body (1).
3. The transforaminal endoscopic lesion irrigation and drainage device according to claim 1, characterized in that: The lead wire (6) and the connecting rod (7) are connected by embedding and fixing, and the lead wire (6) and the protective capillary (5) are connected by sliding. The connecting rod (7) and the protective capillary (5) are connected by snap-fit connection, and the diameter of the connecting rod (7) is larger than the diameter of the lead wire (6). The top end of the lead wire (6) is located above the top end point of the drainage tube body (1).
4. The transforaminal endoscopic lesion irrigation and drainage device according to claim 1, characterized in that: A flushing connection pipe (11) is installed at the inner center of the liquid discharge pipe (8), and the arc-shaped corner of the bottom end of the flushing connection pipe (11) passes through the outer surface of the liquid discharge pipe (8). A removable blocking plug (12) is installed at the end of the flushing connection pipe (11) in a sealing engagement. A reinforcing straight rod (13) is installed through the top end of the flushing connection pipe (11), and the end of the reinforcing straight rod (13) is connected to the liquid discharge pipe (8) in a sealing engagement.
5. The transforaminal endoscopic lesion irrigation and drainage device according to claim 4, characterized in that: The reinforcing straight rod (13) is connected to the flushing connection pipe (11) by hot-melt fixing, and the flushing connection pipe (11) is connected to the liquid discharge pipe (8) by hot-melt fixing. The length of the reinforcing straight rod (13) is equal to the outer edge of the top of the liquid discharge pipe (8), and the liquid discharge pipe (8) is connected to the drainage tube body (1) by sealed engagement. The outer diameter of the drainage tube body (1) is equal to the outer diameter of the positioning ring body (9), and the end face of the reinforcing straight rod (13) is connected to the inner wall of the drainage tube body (1) by extrusion fitting.
6. The transforaminal endoscopic lesion irrigation and drainage device according to claim 4, characterized in that: The top end surface of the flushing connection pipe (11) is higher than the top end surface of the liquid discharge pipe (8), the top end of the flushing connection pipe (11) and the bottom end of the flushing guide pipe body (3) are connected in a sealed manner, and the internal space of the flushing connection pipe (11) and the internal space of the liquid discharge pipe (8) are not connected to each other.
7. The transforaminal endoscopic lesion irrigation and drainage device according to claim 4, characterized in that: Three groups of liquid sensors are embedded and fixedly installed inside the reinforcement straight rod (13), and the three groups of liquid sensors include a first liquid sensor, a second liquid sensor and a third liquid sensor; The first liquid sensor and the second liquid sensor are located at both ends of the reinforcement straight rod (13), on both sides of the internal inlet of the liquid discharge pipe (8), and detect the flow rate, flow velocity and dynamic change rate of the drainage liquid in real time; The third liquid sensor is located at the middle end of the reinforced straight rod (13) and is arranged at the inner center of the liquid discharge pipe (8) to detect the pressure fluctuation and instantaneous flow of the flushing liquid in real time; The three groups of liquid sensors are connected to the wireless transmission module at the positioning ring body (9) via micro-wires in the reinforced straight rod (13), forming a multi-channel liquid parameter monitoring system.
8. The transforaminal endoscopic lesion irrigation and drainage device according to claim 7, characterized in that: The first liquid sensor and the second liquid sensor are ultrasonic Doppler flow sensors, and the third liquid sensor is a differential pressure-flow composite sensor. The three sensors synchronously generate a dynamic correlation curve of drainage fluid flow rate-flushing fluid pressure.
9. The transforaminal endoscopic lesion irrigation and drainage device according to claim 7, characterized in that: The multi-channel liquid parameter monitoring system is configured as follows: When the drainage fluid flow rate change rate is lower than the threshold value X or the flushing fluid pressure fluctuation value exceeds the threshold value Y, the wireless transmission module is triggered to send a lesion blockage warning signal to the external terminal; The threshold value X is dynamically set based on the lesion volume of the preoperative intervertebral foramen CT three-dimensional reconstruction, and the threshold value Y is determined by calculating the ratio of the diameter of the flushing guide tube (3) to the total cross-sectional area of the flushing connection tube (11).
10. The transforaminal endoscopic lesion irrigation and drainage device according to claim 7, characterized in that: The outer surfaces of the first liquid sensor and the second liquid sensor are coated with a nano-hydrophobic coating, and the liquid sensor probe extends 0.8-1.2 mm from the outer surface of the reinforcement straight rod (13); the detection ends of the first liquid sensor and the second liquid sensor are arranged at an angle of 30° to the outer surface of the reinforcement straight rod (13), forming a drainage liquid vortex enhanced detection structure.