Infected lacuna medicine injection and flushing channel device

Abstract

The invention discloses an infected lacuna medicine injection and flushing channel device, which relates to the field of infected lacuna nursing and comprises a flushing gun, a medicine injection table and a tool table, compared with the prior art, the infection lacuna medicine injection and flushing channel device has the advantages that the replaceable brush head is integrated at the tail end of the flushing gun head, and soft and effective mechanical debridement can be carried out on the wall of the lacuna through the silica gel soft hair head on the brush head under direct vision or image guidance; the independent medicine injection channel and the independent waste liquid suction channel are arranged, through the L-shaped gun head, the second hose and the suction pump, and in combination with a key one-way valve structure, physical isolation of fluid is achieved, the one-way valve is automatically and tightly closed under suction negative pressure, it is ensured that polluted waste liquid cannot flow back into a clean medicine injection pipeline absolutely, and the medicine injection efficiency is improved. The risk of cross infection caused by pipeline sharing is fundamentally eradicated, and the safety of perfusion treatment is guaranteed.

Description

Technical Field

[0001] This invention relates to infection cavity care technology, specifically to an infection cavity injection and flushing channel device. Background Technology

[0002] For cavity wounds following trauma and deep organ surgery, it is necessary to leave irrigation and drainage tubes in place to flush out residual bacteria and inflammation, and to inject antibiotics or other drugs into the cavity to control infection and complete a series of treatment objectives.

[0003] The existing cavity injection and irrigation channels all use ordinary drainage tubes. Currently, a single drainage tube is often used to complete operations such as injecting irrigation fluid and draining waste fluid. This can easily lead to contamination of the drainage tube, affecting subsequent drug injection. In addition, the existing drainage tubes do not have the function of cleaning the wound, which affects the speed of debridement and the overall work. Their ease of operation needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide an injection and irrigation channel device for infected cavities, in order to solve the problems of existing technologies that use a single drainage tube to complete operations such as injecting irrigation fluid and draining waste fluid, which can easily lead to contamination of the drainage tube and affect subsequent drug injection. In addition, existing drainage tubes do not have the function of cleaning the wound, which affects the speed of debridement and the overall work, and their ease of operation needs to be improved.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an injection and flushing channel device for infected cavities, comprising a flushing gun, an injection station, and a tool table;

[0006] The flushing gun includes a handle. Several first connectors communicating with the inner cavity are fixedly installed on one side of the outer wall of the handle. A first hose is installed on the first connector. A one-way valve matching the first connector is installed in the inner cavity of the handle. A second connector communicating with the inner cavity is installed on the top surface of the handle. An L-shaped nozzle is installed on the second connector. A brush head is installed at the end of the L-shaped nozzle. A grip is fixedly installed on the other side of the outer wall of the handle. Several C-shaped locking blocks are fixedly installed on the outer wall of the grip.

[0007] Furthermore, the L-shaped gun head includes a gun barrel, the middle of which is symmetrically provided with flushing channels connecting the two ends, and a third connector is rotatably installed on the bottom surface of the gun barrel. One of the third connectors is threadedly connected to the second connector, and a second hose is installed on the other third connector. The second hose is snapped into the middle of the C-shaped locking block.

[0008] Furthermore, the brush head includes a conical head, and a first thread is provided on the outer wall surface of the rear end of the conical head. The conical head is threadedly connected to the rinsing channel through the first thread, and a plurality of silicone soft bristles are evenly distributed and installed on the outer wall surface of the conical head.

[0009] Furthermore, the one-way valve includes a cross-shaped base fixedly installed in the inner cavity of the gun handle, a first telescopic rod fixedly installed in the middle of the cross-shaped base, a second telescopic rod slidably installed in the middle of the first telescopic rod, a sealing head fixedly installed at the front end of the second telescopic rod, a spring sleeved on the outer wall surface of the second telescopic rod, and a sealing ring installed in the middle of the outer wall surface of the sealing head.

[0010] Furthermore, the injection station includes a first base, a rotating cavity is formed in the middle of the first base, an injection switching mechanism is installed in the rotating cavity, a plurality of cartridge mounting slots communicating with the rotating cavity are formed in the middle of the top surface of the first base, an injection barrel is installed in the cartridge mounting slot, and a threaded groove matching the injection barrel is formed on the inner side wall of the rotating cavity.

[0011] Furthermore, the injection switching mechanism includes a motor fixedly installed in the first base and a rotating seat rotatably installed at one end in the middle of the rotating cavity. A driven gear is fixedly installed on the bottom surface of the rotating end of the rotating seat, and a driving gear is fixedly installed on the rotating end of the motor. The driving gear and the driven gear are meshed together. An electric telescopic rod is fixedly installed on the top surface of the other end of the rotating seat.

[0012] Furthermore, the axis of the electric telescopic rod is collinear with the axis of the cartridge mounting groove, and the diameter of the driven gear is larger than the diameter of the driving gear.

[0013] Furthermore, the injection tank includes a tank body, a second thread for matching threaded grooves is provided on the lower outer wall surface of the tank body, a threaded top cover is threadedly installed in the middle of the top surface of the tank body, a fourth connector is fixedly installed in the middle of the top surface of the threaded top cover, the fourth connector is fixedly connected to the other end of the first hose, a rotating handle is fixedly installed in the middle of the top surface of the threaded top cover, an injection piston is slidably installed in the inner cavity of the tank body, and a push rod penetrating to the bottom surface of the tank body is fixedly installed in the middle of the bottom surface of the injection piston.

[0014] Furthermore, the tool table includes a second base fixedly installed on one side of the first base. A drawer slot is provided in the middle of the second base, and a waste liquid box is slidably installed in the drawer slot. A tool slot is provided on the top surface of the second base. A suction pump is also installed in the middle of the top surface of the second base. The water inlet of the suction pump is connected to the other end of the second hose, and the water outlet of the suction pump extends through to the middle of the top surface of the drawer slot.

[0015] Compared with existing technologies, the present invention provides an injection and irrigation channel device for infected cavities. By integrating a replaceable brush head at the end of the irrigation gun head, the soft silicone bristles on the brush head can perform gentle and effective mechanical debridement of the cavity walls under direct vision or image guidance. By setting up an independent injection channel via a first hose, a one-way valve, a gun handle, and an L-shaped gun head, and an independent waste fluid suction channel via an L-shaped gun head, a second hose, and a suction pump, combined with the key one-way valve structure, physical isolation of fluids is achieved. The one-way valve automatically and tightly closes under suction negative pressure, ensuring that contaminated waste fluid can never flow back into the clean injection pipeline, fundamentally eliminating the risk of cross-infection caused by shared pipelines and ensuring the safety of irrigation therapy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the flushing gun structure provided in an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the gun handle structure provided in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of a one-way valve structure provided in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the L-shaped gun head and brush head structure provided in an embodiment of the present invention;

[0022] Figure 6 This is a cross-sectional view of the second base structure provided in an embodiment of the present invention;

[0023] Figure 7 This is a cross-sectional view of the drug injection tank structure provided in an embodiment of the present invention;

[0024] Figure 8 A cross-sectional view of the first base structure provided for an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Washing gun; 11. Gun handle; 12. First connector; 13. Second connector;

[0027] 14. L-shaped nozzle; 141. Nozzle; 142. Flushing channel; 143. Third connector;

[0028] 15. Brush head; 151. Conical head; 152. First thread; 153. Silicone soft bristle head;

[0029] 16. Grip; 17. C-shaped locking block;

[0030] 18. One-way valve; 181. Cross-shaped base; 182. First telescopic rod; 183. Second telescopic rod; 184. Spring; 185. Sealing head; 186. Sealing ring;

[0031] 2. Injection station;

[0032] 21. First base; 211. Rotating cavity; 212. Cartridge mounting slot; 213. Threaded groove;

[0033] 22. Injection tank; 221. Tank body; 222. Second thread; 223. Threaded top cover; 224. Fourth connector; 225. Rotating handle; 226. Injection piston; 227. Push rod;

[0034] 23. Injection switching mechanism; 231. Motor; 232. Rotating seat; 233. Driven gear; 234. Driving gear; 235. Electric telescopic rod;

[0035] 3. Tool table; 301. Second base; 302. Tool slot; 303. Drawer slot; 304. Waste liquid box; 305. Suction pump;

[0036] 4. First flexible tube;

[0037] 5. Second hose. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figures 1 to 8 As shown:

[0040] Example 1:

[0041] This invention provides a drug injection and irrigation channel device for infected cavities. The device adopts a modular design and integrates four major functions: drug injection, irrigation, mechanical debridement and waste fluid recovery. It aims to provide an efficient, clean and easy-to-operate integrated solution for the care of deep infected cavities such as abdominal abscesses, deep surgical remnants, and osteomyelitis cavities.

[0042] like Figure 1 As shown in the overall structure, the device mainly includes three core modules: a flushing gun 1, a drug injection station 2, and a tool station 3. The flushing gun 1 is connected to the drug injection station 2 through a first hose 4 and is used to deliver the drug solution and perform the operation.

[0043] Meanwhile, it is connected to the tool table 3 through the second hose 5 for recycling waste liquid. The three modules can be integrated into a mobile trolley or a fixed workstation to form a complete nursing unit.

[0044] Detailed structure of flushing gun 1:

[0045] The flushing gun 1 is an operating terminal that directly acts on the infected cavity of the patient, and its design takes into account both ergonomics and functional requirements.

[0046] Gun handle 11: as Figure 2 and Figure 3 As shown, the gun handle 11 is a hollow cylindrical shell, usually made of medical-grade engineering plastics (such as polycarbonate) for easy sterilization, and its interior forms the main fluid channel;

[0047] First connector 12 and first hose 4: At least one (usually two to three) first connector 12 is fixedly installed on the outer wall of one side of the gun handle 11. The first connector 12 is a standard Luer connector or quick connector, and its inner end communicates with the inner cavity of the gun handle 11. The first hose 4 is a transparent medical silicone tube or PVC tube, one end of which is firmly connected to the first connector 12, and the other end is connected to the injection station 2. The design of multiple first connectors 12 allows for simultaneous or standby connection to different drug sources.

[0048] Second connector 13 and L-shaped gun head 14: A second connector 13 is installed on the top surface of the gun handle 11, which also communicates with the inner cavity of the gun handle. The second connector 13 is preferably a threaded interface. The gun barrel 141 is threadedly connected to the second connector 13 through a third connector 143 at its lower end. Figure 5 The L-shaped design, which forms a bend of approximately 90 to 120 degrees, allows the gun head to be operated at a more ergonomic angle and more easily into the cavity when the operator holds the handle 16, avoiding the blind spots that may be caused by a straight gun head.

[0049] Brush head 15: such as Figure 5 As shown, the brush head 15 is installed at the end of the L-shaped gun head 14. It includes a conical head 151. The conical design facilitates entry into narrow cavities. The outer wall of the rear end of the conical head 151 is provided with a first thread 152 for screwing into the internal thread at the end of the L-shaped gun head 14 [i.e., the outlet end of the irrigation channel 142] to achieve a detachable connection. Several silicone soft bristles 153 are evenly distributed on the outer wall surface of the conical head 151. These soft bristles are soft and elastic, and can gently brush away necrotic tissue, fibrin clots or biofilms attached to the cavity wall without damaging the newly formed granulation tissue, significantly improving the debridement effect.

[0050] Grip 16 and C-shaped locking block 17: The grip 16 is fixed to the other side of the gun handle 11. The surface can be designed with anti-slip texture. Several C-shaped locking blocks 17 are fixedly installed on the outer wall of the grip 16. The C-shaped locking blocks 17 are elastic and their opening size is slightly smaller than the outer diameter of the second hose 5. They are used to temporarily lock and fix the second hose 5 during non-suction periods to keep the work area clean and prevent the hose from being dragged.

[0051] Detailed structure and working principle of one-way valve 18:

[0052] like Figure 3 and Figure 4 As shown, the one-way valve 18 is a key component to ensure that the injection and flushing channels of this device are independent and prevent cross-contamination. A one-way valve 18 is installed in the inner cavity of the gun handle 11 corresponding to each first connector 12.

[0053] Structural Composition: The one-way valve 18 includes a cross-shaped base 181, which is fixedly installed on the valve seat mounting position inside the gun handle 11 via its outer edge. A guide hole is provided in the middle of the base. A first telescopic rod 182 is fixedly installed at the center of the cross-shaped base 181. A second telescopic rod 183 is slidably sleeved on the outside of the first telescopic rod 182. A sealing head 185 is fixedly installed at the front end of the second telescopic rod 183. The sealing head 185 is usually made of silicone or flexible rubber, and its shape matches the inlet conical surface of the valve seat. A spring 184 is sleeved on the outer wall of the second telescopic rod 183. One end of the spring 184 abuts against the cross-shaped base 181, and the other end abuts against the flange of the sealing head 185 or the second telescopic rod 183, providing a constant pre-tightening closing force for the sealing head 185. A sealing ring 186 is also embedded in the middle of the outer wall of the sealing head 185 to enhance the sealing effect.

[0054] Working principle:

[0055] Forward flow [medication / rinsing fluid inflow]: When pressure is applied to the injection station 2, the medicine or rinsing fluid flows into the first connector 12 through the first hose 4. The liquid pressure acts on the back of the plug head 185. When the pressure overcomes the preload of the spring 184, it pushes the second telescopic rod 183 to slide backward along the first telescopic rod 182. The spring 184 is compressed, and the plug head 185 leaves the valve seat, opening an annular flow channel. The liquid can then pass smoothly through the one-way valve 18, enter the main chamber of the gun handle 11, and then flow to the L-shaped gun head 14 and spray out.

[0056] Reverse cut-off [preventing waste liquid backflow]: When the injection stops, or when the suction pump 305 starts, negative pressure [suction force] is generated in the inner cavity of the L-shaped nozzle 14 and the nozzle handle 11. The direction of this negative pressure is opposite to that of the positive pressure. At this time, the preload of the spring 184 and the possible reverse hydrostatic pressure will push the plugging head 185 to press more tightly against the valve seat inlet cone surface. At the same time, under the action of negative pressure, the sealing ring 186 on the edge of the plugging head 185 fits more tightly with the valve seat cone surface, thereby completely blocking the backflow of fluid from the nozzle handle 11 to the first connector 12 [i.e. towards the injection platform]. This mechanism is crucial. It can effectively prevent the contaminated waste liquid containing a large number of bacteria and necrotic tissue drawn back from the infected cavity from flowing back into the relatively clean injection pipeline and cartridge, fundamentally avoiding cross-contamination of the pipeline and drug contamination.

[0057] 3. Detailed structure of injection station 2:

[0058] like Figure 1 , Figure 7 and Figure 8 As shown, the injection station 2 is responsible for storing drugs and providing controllable injection power;

[0059] First base 21: As the base of injection station 2, it has a rotating cavity 211 inside and multiple (e.g., 5 in the figure) cartridge mounting slots 212 on the top surface. These mounting slots are arranged in a ring array and the bottom is connected to the rotating cavity 211. The lower part of the inner side wall of the cartridge mounting slot 212 is provided with a threaded groove 213.

[0060] Injection tank 22: such as Figure 7 As shown, each cartridge mounting slot 212 can install one injection tank 22. The injection tank 22 includes a tank body 221. The lower outer wall of the tank body 221 is provided with a second thread 222 for screwing into the threaded groove 213 for fixing. The top of the tank body 221 is sealed by a threaded top cover 223. A fourth connector 224 is fixed in the center of the top of the threaded top cover 223 for connecting the first tubing 4. A rotating handle 225 is also provided in the center of the top cover for easy manual tightening or disassembly. A sliding injection piston 226 is provided inside the tank body 221. A push rod 227 is connected to the bottom surface of the piston. The push rod 227 passes downward through the bottom of the tank body 221.

[0061] Injection switching mechanism 23: such as Figure 8As shown, this mechanism is used to drive different injection barrels 22 for injection. It includes a motor 231 (such as a stepper motor) fixedly installed inside the first base 21. In the middle of the rotating cavity 211, a rotating seat 232 is vertically rotatably installed. A driven gear 233 is fixed at the lower end of the rotating seat 232. A driving gear 234 is fixed on the output shaft of the motor 231. The two mesh. Since the diameter of the driven gear 233 is larger than that of the driving gear 234, a reduction gear pair is formed, which can provide more accurate rotation positioning and greater torque. An electric telescopic rod 235 (or electric push rod) is fixedly installed at the upper end of the rotating seat 232. When the motor 231 is working, it drives the rotating seat 232 to rotate through the gear, thereby driving the electric telescopic rod 235 to align with the central axis of any one of the injection barrel mounting slots 212. Then, the push rod of the electric telescopic rod 235 extends and pushes down the push rod 227 of the injection barrel 22, thereby pushing the injection piston 226 upward and pressing the liquid medicine in the barrel out through the fourth connector 224 and the first hose 4.

[0062] 4. Detailed structure of tool table 3:

[0063] like Figure 1 and Figure 6 As shown, tool table 3 mainly serves the functions of waste liquid recycling and instrument storage;

[0064] Second base 301: It is fixedly connected to the first base 21 or integrally formed, and its top surface is provided with a tool slot 302 for storing spare brush heads, sealing rings and other sterile small instruments.

[0065] Waste liquid collection system: A drawer slot 303 is provided in the middle of the second base 301, and a waste liquid box 304 [such as a graduated transparent collection bottle] is slidably installed inside for easy removal, emptying, and disinfection. A suction pump 305 [such as a diaphragm-type medical negative pressure pump] is installed on the top surface of the second base 301. The water inlet of the suction pump 305 is connected to the other end of the second hose 5 through a pipeline. The second hose 5 is an independent pipeline for suction, and one end of it is connected to the third connector 143 on the side of the L-shaped nozzle 14 [see...]. Figure 5 During operation, it is fixed on the C-shaped locking block 17, and the water outlet [drainage end] pipe of the suction pump 305 extends to the top of the drawer slot 303, directly discharging the suction waste liquid into the waste liquid box 304;

[0066] Working principle and operation process of Example 1:

[0067] Preparation stage: Screw multiple injection tanks 22 containing different medications [antibiotic solution, saline solution] into the injection tank mounting slot 212 of the injection platform 2. Connect the two ends of the first hose 4 to the fourth connector 224 of the injection tank 22 and the first connector 12 of the flushing gun 1, respectively. Connect the two ends of the second hose 5 to the third connector 143 of the L-shaped nozzle 14 and the water inlet of the suction pump 305 of the tool table 3, respectively. Select a suitable sterile brush head 15 and install it on the L-shaped nozzle 14.

[0068] Injection stage: The program is set through the control panel [not shown in the figure, can be integrated into the table] or manually operated. The motor 231 of the injection switching mechanism 23 is started, driving the electric telescopic rod 235 to rotate to the bottom of the first injection tank. The electric telescopic rod 235 extends and pushes the piston of the injection tank, delivering the medicine through the first hose 4 to the flushing gun 1. The pressure of the medicine opens the one-way valve 18, flows through the flushing channel 142 of the L-shaped gun head 14, and sprays out from the front or side of the brush head 15, injecting into the target infected cavity.

[0069] Irrigation and debridement stage: Switch to the saline tank for irrigation. While or shortly after injecting the irrigation solution, the operator holds the irrigation gun 1 and inserts the brush head 15 into the cavity. The operator uses the soft silicone bristle head 153 to gently wipe the inner wall of the cavity, loosen and remove necrotic material. During this process, irrigation solution continues to flow out, working together to rinse the wound.

[0070] Waste liquid recovery stage: During or after rinsing, the suction pump 305 is started. At this time, the one-way valve 18 is tightly closed under the negative pressure generated in the inner cavity of the gun handle 11 and the action of the spring 184, which effectively prevents the waste liquid from flowing back into the injection tube. Under the action of negative pressure, the waste liquid is sucked in from the cavity through the rinsing channel 142 around the brush head 15 and the L-shaped gun head 14, flows through the second hose 5, and is finally discharged into the waste liquid box 304 by the suction pump 305.

[0071] Cycle and switching: Steps 2-4 can be repeated according to the doctor's orders, using different drugs for irrigation, flushing and aspiration in sequence until the treatment requirements are met.

[0072] Example 2:

[0073] Based on Example 1, this embodiment optimizes the function of the brush head 15 to make it suitable for more complex infected cavities or those requiring higher debridement efficiency.

[0074] like Figure 5As shown, the brush head 15 of this embodiment improves the structure of the conical head 151 while retaining the detachable silicone soft bristle head 153. The difference is that multiple micro-spray holes are added at the gap between the tip of the conical head 151 and the side silicone soft bristle head 153 [not marked with new numbers in the figure, which can be regarded as an improvement on the structure of the conical head 151]. These micro-spray holes are connected to the rinsing channel 142 at the rear end through the micro-channel opened inside the conical head 151. At the same time, the installation method of the silicone soft bristle head 153 is changed to a snap-fit ​​connection that can be quickly plugged in and unplugged, instead of relying entirely on the integral thread screw connection. For example, the conical head 151 is provided with an annular groove, and the base of the silicone soft bristle head 153 is provided with a corresponding elastic protrusion.

[0075] Detailed explanation of the new structure and functions:

[0076] Brush head with built-in micro-spray holes: This design enables a collaborative debridement mode of "brushing and rinsing at the same time". When rinsing is performed, the rinsing solution not only flows out from the main outlet at the end of the brush head 15, but also seeps out from the micro-spray holes throughout the brush head at a low flow rate and at multiple angles. In this way, while the silicone soft bristle head 153 performs physical brushing, the rinsing solution can directly act on the contact interface between the bristles and the cavity wall, instantly diluting and rinsing away the brushed-off necrotic tissue, pus and bacteria, preventing the sloughed-off material from re-attaching, which greatly improves the efficiency and thoroughness of a single debridement. This design is particularly suitable for cleaning biofilms or viscous purulent secretions.

[0077] Quick-change brush bristle assembly: The snap-on connection allows healthcare professionals to quickly replace the severely contaminated or worn silicone soft bristle head 153 assembly without disassembling the entire conical head 151. This ensures the brushing effect while reducing the cumbersome operation and cost of replacing the entire brush head.

[0078] Working principle and operation process of Example 2:

[0079] Its basic workflow is the same as in Example 1. In the "rinsing and debridement stage", when the operator holds the rinsing gun 1 to brush, the rinsing solution is injected. At this time, the rinsing solution is divided into two paths: one path flows out from the main channel at the front end of the brush head 15 for high-flow irrigation and rinsing; the other path seeps out evenly through the micro-spray holes to directly wet and rinse the local wound being brushed. The suction pump 305 works continuously to promptly remove the waste liquid mixed with sloughed necrotic tissue. When the bristles need to be replaced, simply pull off the old silicone soft bristle head 153 component and press the new component into the snap-fit ​​position. There is no need to use tools to twist the entire brush head.

[0080] Example 3:

[0081] Based on Embodiment 1 or 2, this embodiment upgrades the injection switching mechanism 23 of the injection station 2 with intelligent technology, making it suitable for complex infection cases that require long-term, multi-drug sequential, timed and quantitative perfusion treatment, such as continuous irrigation treatment for severe abdominal infection and complex osteomyelitis.

[0082] like Figure 8 As shown, the difference in this embodiment is that the injection switching mechanism 23 further integrates an intelligent control system, which includes a microprocessor controller [integrated in the first base 21, not shown in the figure], a position sensor [used to detect the rotation angle of the rotating seat 232 to ensure alignment accuracy], and a human-machine interface [such as a touch screen, which can be installed on the side of the tool table 3 or on an independent bracket];

[0083] Detailed Explanation of Intelligent Control Functions:

[0084] Preset programming function: Medical staff can preset the treatment program through the human-computer interaction interface. The program parameters include: selecting the number of the drug infusion tank 22 to participate in the sequential treatment [corresponding to different drugs], the amount of drug infused in each tank [precisely controlled by controlling the stroke of the electric telescopic rod 235], the drug infusion flow rate [controlled by controlling the extension speed of the electric telescopic rod 235], the residence time after drug infusion, the interval time between different drug infusions, and whether it is necessary to perform irrigation fluid infusion and aspiration synchronously or alternately, etc.

[0085] Automatic execution and monitoring: When treatment begins, the system runs automatically. The microprocessor controller drives the motor 231 to rotate according to the preset program, so that the electric telescopic rod 235 on the rotating seat 232 is precisely aligned with the first target drug cartridge. Then, the electric telescopic rod 235 is controlled to push at the set speed and stroke to complete the quantitative drug injection. After the drug injection is completed, the system can wait for the set dwell time and then automatically switch to the flushing mode [connected to the saline tank] for flushing, and simultaneously start the suction pump 305. After one cycle is completed, it automatically switches to the next drug cartridge and starts a new round of drug injection and flushing cycle. The whole process does not require manual intervention to switch tubing or operate the syringe.

[0086] Recording and Alarms: The system can automatically record detailed information for each treatment (time, medication, dosage, etc.) and generate a treatment log. If any abnormality occurs, such as running out of medication (judged by pressure sensor or end of stroke), tubing blockage, or abnormal suction negative pressure, the system will issue an audible and visual alarm and suspend operation.

[0087] Working principle and operation process of Example 3:

[0088] Initialization and programming: Install all the required medicine tanks and flushing solution tanks onto the infusion station 2 and connect all the pipelines. Input or select the preset treatment program on the control panel.

[0089] Treatment Start: After confirming that the patient is connected correctly, the intelligent treatment program is started, and the device begins to operate fully automatically;

[0090] Automatic sequential treatment: The device strictly follows the program to perform the cyclical operation of "A drug infusion → residence → saline flushing / aspiration → interval → B drug infusion →..." throughout the process. The one-way valve 18 always ensures the isolation between the drug infusion and aspiration channels, while the intelligent system ensures the accuracy of drug administration and the correctness of the timing.

[0091] Treatment completion and data management: After treatment is completed, the device stops and prompts a message. All treatment data can be uploaded to the hospital information system for archiving. This mode greatly frees up medical staff and reduces the chance of human error and contamination. It is especially suitable for standardized cavity irrigation treatment in ICU or infectious disease wards.

[0092] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for injecting and flushing drugs into infected cavities, characterized in that: Includes a flushing gun (1), a medicine dispensing station (2), and a tool table (3); The flushing gun (1) includes a handle (11). Several first connectors (12) communicating with the inner cavity are fixedly installed on one side of the outer wall of the handle (11). A first hose (4) is installed on the first connector (12). A one-way valve (18) matching the first connector (12) is installed in the inner cavity of the handle (11). A second connector (13) communicating with the inner cavity is installed on the top surface of the handle (11). An L-shaped gun head (14) is installed on the second connector (13). A brush head (15) is installed at the end of the L-shaped gun head (14). A handle (16) is fixedly installed on the other side of the outer wall of the handle (11). Several C-shaped locking blocks (17) are fixedly installed on the outer wall of the handle (16).

2. The device for injecting and flushing medication into infected cavities according to claim 1, characterized in that: The L-shaped gun head (14) includes a gun rod (141). The gun rod (141) has symmetrical flushing channels (142) connecting the two ends in the middle. A third connector (143) is rotatably installed on the bottom surface of the gun rod (141). One of the third connectors (143) is threadedly connected to the second connector (13). A second hose (5) is installed on the other third connector (143). The second hose (5) is snapped into the middle of the C-shaped locking block (17).

3. The device for injecting and flushing medication into infected cavities according to claim 2, characterized in that: The brush head (15) includes a conical head (151), and a first thread (152) is provided on the outer wall of the rear end of the conical head (151). The conical head (151) is threadedly connected to the rinsing channel (142) through the first thread (152). A plurality of silicone soft bristle heads (153) are evenly distributed on the outer wall of the conical head (151).

4. The device for injecting and flushing medication into infected cavities according to claim 1, characterized in that: The one-way valve (18) includes a cross-shaped base (181) fixedly installed in the inner cavity of the gun handle (11). A first telescopic rod (182) is fixedly installed in the middle of the cross-shaped base (181). A second telescopic rod (183) is slidably installed in the middle of the first telescopic rod (182). A sealing head (185) is fixedly installed at the front end of the second telescopic rod (183). A spring (184) is sleeved on the outer wall of the second telescopic rod (183). A sealing ring (186) is installed in the middle of the outer wall of the sealing head (185).

5. The device for injecting and flushing medication into infected cavities according to claim 1, characterized in that: The injection station (2) includes a first base (21), a rotating cavity (211) is provided in the middle of the first base (21), an injection switching mechanism (23) is installed in the rotating cavity (211), a plurality of cartridge mounting slots (212) communicating with the rotating cavity (211) are provided in the middle of the top surface of the first base (21), an injection barrel (22) is installed in the cartridge mounting slot (212), and a threaded groove (213) matching the injection barrel (22) is provided on the inner wall of the rotating cavity (211).

6. The device for injecting and flushing medication into infected cavities according to claim 5, characterized in that: The injection switching mechanism (23) includes a motor (231) fixedly installed in the first base (21) and a rotating seat (232) rotatably installed at one end in the middle of the rotating cavity (211). A driven gear (233) is fixedly installed on the bottom surface of the rotating end of the rotating seat (232), and a driving gear (234) is fixedly installed on the rotating end of the motor (231). The driving gear (234) meshes with the driven gear (233), and an electric telescopic rod (235) is fixedly installed on the top surface of the other end of the rotating seat (232).

7. The device for injecting and flushing medication into infected cavities according to claim 6, characterized in that: The axis of the electric telescopic rod (235) is collinear with the axis of the cartridge mounting groove (212), and the diameter of the driven gear (233) is greater than the diameter of the driving gear (234).

8. The device for injecting and flushing medication into infected cavities according to claim 6, characterized in that: The injection tank (22) includes a tank body (221). A second thread (222) for matching the threaded groove (213) is provided on the lower outer wall surface of the tank body (221). A threaded top cover (223) is threadedly installed in the middle of the top surface of the tank body (221). A fourth connector (224) is fixedly installed in the middle of the top surface of the threaded top cover (223). The fourth connector (224) is fixedly connected to the other end of the first hose (4). A rotating handle (225) is fixedly installed in the middle of the top surface of the threaded top cover (223). An injection piston (226) is slidably installed in the inner cavity of the tank body (221). A push rod (227) penetrating to the bottom surface of the tank body (221) is fixedly installed in the middle of the bottom surface of the injection piston (226).

9. The device for injecting and flushing medication into infected cavities according to claim 8, characterized in that: The tool table (3) includes a second base (301) fixedly installed on one side of the first base (21). A drawer slot (303) is provided in the middle of the second base (301). A waste liquid box (304) is slidably installed in the drawer slot (303). A tool slot (302) is provided on the top surface of the second base (301). A suction pump (305) is also installed in the middle of the top surface of the second base (301). The water inlet of the suction pump (305) is connected to the other end of the second hose (5). The water outlet of the suction pump (305) extends through to the middle of the top surface of the drawer slot (303).

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