Double-cavity drainage tube of intelligent double-mode wound drainage system

Abstract

The invention discloses a double-cavity drainage tube of an intelligent bimodal wound drainage system, and relates to the technical field of wound drainage flushing, the double-cavity drainage tube comprises an outer tube and a double-cavity drainage module, the double-cavity drainage module is arranged on the inner wall of the outer tube, and the double-cavity drainage module comprises a drainage tube, a drainage cavity, a flushing cavity, a polymer diaphragm, a pulse jet hole and a drainage hole. By installing the double-cavity drainage module, drainage and flushing dual-mode synchronous operation and intelligent switching are achieved, liquid cross contamination is avoided, the necrotic tissue removing efficiency is improved, retrograde diffusion of pathogens is blocked from the source, and the infection rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of trauma drainage and irrigation, and particularly to a dual-chamber drainage tube of an intelligent dual-modal trauma drainage system. Background Art

[0002] In the medical field, drainage tubes are widely used in scenarios such as postoperative fluid drainage, infection prevention, and treatment assistance. In traditional trauma drainage systems, drainage and irrigation cannot be carried out synchronously, the common cavity and physical isolation are not thorough enough, resulting in the reverse flow of pathogens and irrigation fluid, a high infection rate, and continuous irrigation can only remove surface contaminants, with a low clearance rate for stubborn attachments such as deep necrotic tissues and biofilms.

[0003] Increased risk of surgical wound infection: Taking abdominal surgery as an example, a drainage tube will be placed at the postoperative wound for irrigation and drainage. Due to incomplete physical isolation in the traditional drainage system, the pathogens carried by the irrigation fluid are likely to flow back to the deep part of the wound. For example, in gastrointestinal surgery, there are many bacteria in the intestine. If the irrigation fluid carries intestinal bacteria and flows back, it will directly contaminate the surgical wound, causing wound infection, resulting in increased redness, swelling, pain, and prolonged healing time. In severe cases, even secondary surgical debridement is required, bringing great pain and economic burden to the patient.

[0004] Increased risk of systemic infection: The reverse flow of pathogens is not limited to local wound infection. If the pathogens in the drainage tube break through the wound defense and enter the blood circulation, it will cause systemic infection. For example, in some major trauma surgeries, such as after open reduction and internal fixation of fractures, poor drainage combined with the reverse flow of irrigation fluid, and bacteria entering the blood may cause serious systemic infectious diseases such as bacteremia and septicemia, threatening the life and health of the patient. The patient will show symptoms such as high fever, chills, and shock, with great treatment difficulty and high mortality.

[0005] The clearance rate of continuous irrigation for deep necrotic tissues and biofilms is low.

[0006] Difficulty in healing chronic wounds: In the treatment of chronic wounds such as burns and diabetic foot ulcers, deep necrotic tissues and biofilms persist, hindering wound healing. Continuous irrigation can only act on the surface of the wound, and deep necrotic tissues cannot be effectively removed, continuously releasing harmful substances, stimulating the surrounding tissues of the wound, and resulting in the continuous existence of inflammatory reactions. Biofilms provide a protective barrier for bacteria, making them immune to antibiotics and immune cells, resulting in the wound remaining unhealed for a long time, increasing the pain of the patient and the medical cost.

[0007] Increasing the probability of complications: The remaining deep necrotic tissue and biofilms that are not removed can become a breeding ground for bacteria, leading to repeated infections. For example, after orthopedic surgery, if the deep necrotic tissue and biofilms remaining in the wound are not effectively cleaned, it can trigger complications such as osteomyelitis. The treatment cycle of osteomyelitis is long, requiring long-term use of antibiotics, and may even lead to serious consequences such as bone destruction and limb dysfunction, severely affecting the patient's quality of life and the recovery of limb function. Such as:

[0008] CN202021379488.9 A drainage device for trauma surgery. The drainage device for trauma surgery provided by this patent has the basic functions of drainage and irrigation. By setting up a drainage tube and an irrigation tube, it realizes the operations of liquid drainage and irrigation of the trauma site, and to a certain extent solves the problem of liquid treatment in trauma treatment.

[0009] Problem of sensor accuracy: This patent does not mention any content about sensors, and it is impossible to monitor key parameters such as the concentration and pressure of accumulated fluid at the trauma site in real time. During the actual treatment process, it is difficult for doctors to accurately grasp the situation inside the trauma. For example, if they cannot timely know the change in the amount of accumulated fluid, it may lead to untimely or excessive drainage, affecting the treatment effect.

[0010] Problem of pulsed irrigation effect: Although this device has an irrigation function, it does not adopt the pulsed irrigation technology, but only an ordinary irrigation method. Ordinary irrigation is difficult to effectively remove deep necrotic tissue and biofilms because its water flow lacks the impact force and intermittent scouring effect of pulses and cannot penetrate deep into the trauma for comprehensive cleaning. In contrast.

[0011] CN201820739846.8 A closed thoracic drainage device with an irrigation function. The closed thoracic drainage device with an irrigation function designed by this patent is mainly used for drainage and irrigation of the thoracic cavity. It includes a drainage tube, an irrigation tube and related connecting components, aiming to realize the operations of draining and irrigating the liquid in the thoracic cavity and promoting the recovery of thoracic trauma.

[0012] Problem of sensor accuracy: Similarly, this patent does not configure sensors to monitor key parameters during the drainage or irrigation process. In the treatment of thoracic trauma, parameters such as the pressure in the thoracic cavity and the nature of the accumulated fluid are crucial for judging the condition and adjusting the treatment plan. Due to the lack of accurate sensor monitoring, doctors can only rely on experience or other indirect methods to speculate on the situation inside the thoracic cavity, with a risk of misjudgment.

[0013] Problem of pulsed irrigation effect: The irrigation function of this device does not involve the principle of pulsed irrigation, and its irrigation method may not be able to effectively cope with the complex environment and stubborn attachments in the thoracic cavity. There may be substances such as blood clots and fibrin in the thoracic cavity, and ordinary irrigation is difficult to completely remove them, easily leaving residues, leading to an increased risk of infection or affecting the re-expansion of lung tissue.

[0014] To this end, the present application proposes a dual - cavity drainage tube of an intelligent dual - mode trauma drainage system capable of synchronously performing drainage and irrigation. Summary of the Invention

[0015] The object of the present invention is to provide a dual - cavity drainage tube of an intelligent dual - mode trauma drainage system to solve the technical problems in the above - mentioned background art, namely, the inability to synchronously perform drainage and irrigation, the sharing of cavities and incomplete physical isolation, resulting in the backflow of pathogens and irrigation fluid and a high infection rate.

[0016] To achieve the above object, the present invention provides the following technical solution: A dual - cavity drainage tube of an intelligent dual - mode trauma drainage system, including an outer tube and a dual - cavity drainage module, wherein the dual - cavity drainage module is arranged on the inner wall of the outer tube;

[0017] The dual - cavity drainage module includes: a drainage tube, a drainage cavity, an irrigation cavity, a polymer diaphragm, pulsed injection holes and drainage holes;

[0018] The interior of the outer tube is divided into a drainage cavity and an irrigation cavity. The drainage cavity and the irrigation cavity are arranged side by side, and the cavities are completely isolated by a polymer diaphragm. A drainage tube is installed inside the drainage cavity. The tube body of the drainage tube is divided into a connection end and a wound surface end. There are 3 groups of drainage holes on the inner wall of the wound surface end, with 4 drainage holes in each group. There are 2 groups of pulsed injection holes on the inner wall of the irrigation cavity, with 4 pulsed injection holes in each group. There are 2 groups of side holes on the tube wall of the drainage cavity, with 4 side holes in each group.

[0019] Preferably, the inner wall of the tube body of the drainage tube is covered with a nano - hydrophobic coating, and a conical head is installed at the top of the outer wall of the drainage tube. The surface of the conical head is smooth to reduce tissue damage.

[0020] Preferably, an intelligent monitoring module is arranged inside the outer tube;

[0021] The intelligent monitoring module includes: an intelligent host, a flow sensor, a bio - impedance sensor and an optical - fiber pressure sensor;

[0022] The bio - impedance sensor and the optical - fiber pressure sensor are installed on the inner wall of the tube body of the drainage tube. The data lines of the bio - impedance sensor and the optical - fiber pressure sensor are embedded in the tube wall of the drainage tube and connected to the first data line. The flow sensor is embedded on the pulsed injection holes on the inner wall of the irrigation cavity. The data line of the flow sensor is embedded in the tube wall of the outer tube and connected to the second data line. The first data line and the second data line are respectively connected to the first communication interface and the second communication interface on the intelligent host.

[0023] Preferably, the intelligent host is provided with a first communication interface and a second communication interface;

[0024] The intelligent host includes: an intelligent monitor, a mechanical rod and a display screen;

[0025] A mechanical rod is installed at the top of the outer wall of the intelligent monitor. A first communication interface and a second communication interface are provided on the mechanical rod, and a display screen is connected to the outer wall of the mechanical rod.

[0026] Preferably, the connection end of the flushing chamber is connected to the second short pipe, the other end of the second short pipe is connected to the second anti-backflow check valve, and the side surface of the outer wall of the second anti-backflow check valve is connected to the second long pipe.

[0027] Preferably, the second long pipe is connected to the pulse flushing module;

[0028] The pulse flushing module includes: a pressure pump, a flushing liquid storage tank and a communication module;

[0029] A base is installed at the top of the outer wall of the pressure pump. The communication module is connected to the top of the outer wall of the base. The communication module is connected to the intelligent monitor through the WiFi communication protocol. Water outlet pipes and water inlet pipes are provided on both sides of the outer wall of the pressure pump. The water outlet pipe is connected to the second long pipe.

[0030] Preferably, the water inlet pipe is connected to a connecting pipe, and the connecting pipe is arranged on the side surface of the outer wall of the flushing liquid storage tank.

[0031] Preferably, the connection end of the drainage chamber is connected to the first short pipe, the other end of the first short pipe is connected to the first anti-backflow check valve, and the side surface of the outer wall of the first anti-backflow check valve is connected to the first long pipe. The first long pipe is arranged on the side surface of the outer wall of the intelligent monitor.

[0032] Preferably, the first long pipe is connected to a drainage storage tank inside the intelligent monitor to drain the drained liquid into the drainage storage tank.

[0033] Preferably, a length adjustment module is provided on the outer wall of the outer pipe;

[0034] The length adjustment module includes: an adjustment ring and a thread groove;

[0035] The adjustment ring is sleeved on the outer wall of the outer pipe. The inner wall of the adjustment ring is provided with an internal thread that matches the thread groove on the outer wall of the outer pipe. When the adjustment ring rotates clockwise, it drives the outer pipe to extend axially. When the adjustment ring rotates counterclockwise, it drives the outer pipe to contract axially.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] 1. By installing a dual-chamber drainage module, the present invention realizes the intelligent switching and synchronous operation of drainage and flushing in dual modes, avoids liquid cross-contamination, improves the efficiency of removing necrotic tissue, blocks the retrograde diffusion of pathogens from the source, and reduces the infection rate;

[0038] 2. The present invention is equipped with an intelligent monitoring module, which realizes the real-time evaluation of the wound state and the adaptive regulation of data. Through multi-sensor monitoring, it can accurately identify the effusion concentration, cavity pressure and flushing efficiency, solving the problem that traditional products cannot monitor the change of the composition of the drainage fluid in real time and are prone to delay the condition.

[0039] 3. The present invention is equipped with a pulsed flushing module, which realizes the efficient cleaning of wound tissue and blockages. The pulsed intermittent flushing maintains the steady state of tissue microcirculation, solving the problems of continuous flushing, tissue damage and incomplete debridement in traditional flushing, and significantly improving the safety and efficiency of wound management.

[0040] 4. The present invention is equipped with a length adjustment module, which realizes the dynamic adaptation of the cavity depth, adapting to superficial wounds to deep cavities. The length can be adjusted by rotating the adjustment ring, avoiding secondary tissue damage caused by traditional repeated intubation or catheter replacement, and solving the problem that the drainage tube cannot adjust its length and the fixed length design is difficult to adapt to complex wound shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0042] Figure 2 is a side structural schematic diagram of the present invention;

[0043] Figure 3 is an outer tube structural schematic diagram of the present invention;

[0044] Figure 4 is a drainage tube structural schematic diagram of the present invention;

[0045] Figure 5 is a cross-sectional schematic diagram of the drainage tube of the present invention;

[0046] Figure 6 is a structural schematic diagram of the anti-reflux check valve of the present invention;

[0047] Figure 7 is a structural schematic diagram of the intelligent mainframe of the present invention;

[0048] Figure 8 is a structural schematic diagram of the pressure pump of the present invention.

[0049] In the figure: 1. Drainage tube; 2. Outer tube; 3. Adjusting ring; 4. First data line; 5. Second data line; 6. First anti-backflow one-way valve; 7. Second anti-backflow one-way valve; 8. First short tube; 9. Second short tube; 10. First long tube; 11. Second long tube; 12. Intelligent host; 13. Mechanical rod; 14. Display screen; 15. Pressure pump; 16. Base; 17. Communication module; 18. Water inlet pipe; 19. Connecting pipe; 20. Flushing liquid storage tank; 21. Pulse injection hole; 22. Drainage hole; 23. Conical head; 24. Flow sensor; 25. Polymer diaphragm; 26. Bio-impedance sensor; 27. Fiber optic pressure sensor; 28. First communication interface; 29. Second communication interface; 30. Drainage cavity; 31. Flushing cavity; 32. Threaded groove; 33. Water outlet pipe; 34. Nano-hydrophobic coating; 35. Intelligent monitor. Detailed implementation manners

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5, an embodiment provided by the present invention: an intelligent dual-modal trauma drainage system double-chamber drainage tube, wherein a double-chamber drainage module is provided on the inner wall of the outer tube 2; the double-chamber drainage module includes: a drainage tube 1, a drainage cavity 30, a flushing cavity 31, a polymer diaphragm 25, pulsed injection holes 21, and drainage holes 22;

[0054] The inner part of the outer tube 2 is divided into a drainage cavity 30 and a flushing cavity 31. The drainage cavity 30 and the flushing cavity 31 are arranged side by side, and the cavities are completely separated by a polymer diaphragm 25. A drainage tube 1 is installed inside the drainage cavity 30. The tube body of the drainage tube 1 is divided into a connection end and a wound end. There are 3 groups of drainage holes 22 on the inner wall of the wound end, and each group has four drainage holes 22. There are 4 groups of pulsed injection holes 21 on the inner wall of the flushing cavity 31, and each group has four pulsed injection holes 21; A nano-hydrophobic coating 34 covers the inner wall of the tube body of the drainage tube 1. A conical head 23 is installed at the top of the outer wall of the drainage tube 1. The surface of the conical head 23 is smooth, reducing tissue damage;

[0055] A length adjustment module is provided on the outer wall of the outer tube 2; the length adjustment module includes: an adjustment ring 3 and a thread groove 32; the adjustment ring 3 is sleeved on the outer wall of the outer tube 2, and its inner wall is provided with an internal thread that matches the thread groove 32 on the outer wall of the outer tube 2. When the adjustment ring 3 rotates clockwise, it drives the outer tube 2 to axially extend. When the adjustment ring 3 rotates counterclockwise, it drives the outer tube 2 to axially contract;

[0056] Furthermore, the tube body of the outer tube 2 is made of medical silicone material, specifically a silicone bellows. A thread groove 32 is provided on the outer wall of the outer tube 2. A sealing layer is provided at the wound end of the outer tube 2. The inner part of the outer tube 2 is divided into an independent double-chamber structure, namely a drainage cavity 30 and a flushing cavity 31. The drainage cavity 30 and the flushing cavity 31 are arranged side by side, and the two cavities are completely separated by a polymer diaphragm 25. A drainage tube 1 is provided in the drainage cavity 30. A nano-hydrophobic coating 34 covers the inner wall of the drainage tube 1. The nano-hydrophobic coating 34 has super hydrophobicity. The hydrophobicity of the nano-hydrophobic coating 34 is determined by the micro-nano rough structure and the low surface energy chemical modification. The micro-nano rough structure is formed by the accumulation of SiO2 nanoparticles to form a rough structure. The low surface energy chemical modification is that silane molecules cover the rough surface through a chemical bond Si-O-Si, reducing the surface energy to below 20 mN / m. The surface energy of water is 72 mN / m, making the water contact angle > 150 0 , a conical head 23 is installed at the front end of the outer wall of the drainage tube 1. The conical head 23 penetrates through the sealing layer of the outer tube 2 and extends deep into the wound. The surface of the conical head 23 is smooth, and it can reduce tissue damage when contacting the wound surface;

[0057] The wound end of the drainage tube 1 is provided with 3 groups of drainage holes 22, each group having four drainage holes 22 with a pore diameter of 1 mm and arranged in a spiral pattern, which can expand the drainage coverage area. The wall of the flushing cavity 31 is provided with 4 groups of pulse jet holes 21, each group having four pulse jet holes 21, which can flush and clean the wound surface. When installing the double-lumen tube for the patient, first compare the wound openings. For patients with a larger wound surface, select a double-lumen tube with a larger diameter; for patients with a smaller wound surface, select a double-lumen tube with a smaller diameter. Then place the double-lumen tube deep in the wound surface to ensure that the drainage cavity 30 covers the target area;

[0058] The outer tube 2 adopts a corrugated tube structure and has axial extensibility. The adjusting ring 3 is sleeved on the outer wall of the outer tube 2. The inner wall of the adjusting ring 3 is provided with internal threads that mesh with the thread grooves 32 on the outer wall of the outer tube 2. The connecting end of the outer tube 2 is fixedly connected to the short tube, and the other end can freely expand and contract. When the adjusting ring 3 rotates clockwise, its internal threads move along the thread grooves 32 of the outer tube 2 towards the wound end. Since the outer tube 2 adopts a corrugated tube structure that can expand and contract, the axial displacement of the adjusting ring 3 pulls the outer tube 2, causing the folds to gradually unfold and the overall length of the outer tube 2 to extend; when rotating counterclockwise, the adjusting ring 3 moves towards the connecting end, pushing the outer tube 2 to compress the folds and the length of the outer tube 2 to shorten; the corrugated tube structure of the outer tube 2 can flexibly deform during adjustment, ensuring the unchangeability of the lumen patency and maintaining the sealing performance at the same time.

[0059] Please refer to Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As an embodiment provided by the present invention: a double-lumen drainage tube of an intelligent dual-modal wound drainage system, the intelligent mainframe 12 is provided with a first communication interface 28 and a second communication interface 29; the intelligent mainframe 12 includes: an intelligent monitor 35, a mechanical rod 13, and a display screen 14; the top end of the outer wall of the intelligent monitor 35 is installed with a mechanical rod 13, the mechanical rod 13 is provided with a first communication interface 28 and a second communication interface 29, and the outer wall of the mechanical rod 13 is connected with a display screen 14;

[0060] The connecting end of the drainage cavity 30 is connected to the first short tube 8, the other end of the first short tube 8 is connected to the first anti-backflow check valve 6, the side surface of the outer wall of the first anti-backflow check valve 6 is connected to the first long tube 10, and the first long tube 10 is arranged on the side surface of the outer wall of the intelligent monitor 35; the first long tube 10 is connected to the drainage storage tank inside the intelligent monitor 35 to drain the drained liquid into the drainage storage tank;

[0061] The inner wall of the outer tube 2 is provided with a double-chamber drainage module; the double-chamber drainage module includes: a drainage tube 1, a drainage chamber 30, a flushing chamber 31, a polymer diaphragm 25, pulsed injection holes 21, and drainage holes 22; the interior of the outer tube 2 is divided into a drainage chamber 30 and a flushing chamber 31, the drainage chamber 30 and the flushing chamber 31 are arranged side by side, and the cavities are completely isolated by a polymer diaphragm 25. A drainage tube 1 is installed inside the drainage chamber 30. The tube body of the drainage tube 1 is divided into a connection end and a wound end. There are 3 groups of drainage holes 22 on the inner wall of the wound end, with four drainage holes 22 in each group. There are 4 groups of pulsed injection holes 21 on the inner wall of the flushing chamber 31, with four pulsed injection holes 21 in each group; the inner wall of the tube body of the drainage tube 1 is covered with a nano-hydrophobic coating 34. A conical head 23 is installed at the top of the outer wall of the drainage tube 1, and the surface of the conical head 23 is smooth to reduce tissue damage;

[0062] Further, after the double-chamber tube is installed, the patient sets the initial parameters on the display screen 14 of the intelligent host 12, sets the negative pressure value to -50 mmHg, then sets the flushing interval to once an hour, with a flushing volume of 20 ml each time, and the pulsed frequency of the flushing liquid is 30 Hz. After the intelligent host 12 runs, the drainage tube 1 absorbs the effusion through the exposed end and the hidden end. The exposed end is the drainage tube 1 with drainage holes 22 that extends beyond the outer tube 2, and the hidden end is the drainage tube 1 with drainage holes 22 inside the outer tube 2. Through the absorption at both ends, the traumatic residual liquid is cleaned comprehensively. When in the hidden end, a negative pressure is generated inside the drainage tube 1, and the effusion in the patient's wound is attracted to the vicinity of the outer tube 2 by the negative pressure inside the drainage tube 1, and then is sucked into the drainage chamber 30 through the side holes on the wall of the drainage chamber 30. Then, under the action of the negative pressure, the effusion is sucked into the drainage tube 1 through the drainage holes 22. When in the exposed end, the negative pressure inside the drainage tube 1 generates an attraction force to directly attract the effusion, which flows into the drainage tube 1 through the drainage holes 22;

[0063] The connection end of the drainage tube 1 is connected to the first short tube 8, and the effusion is transported to the first short tube 8 through the negative pressure. The first short tube 8 is connected to the first anti-backflow one-way valve 6. The outer wall side of the first anti-backflow one-way valve 6 is connected to the first long tube 10. The first anti-backflow one-way valve 6 transmits the effusion from the first short tube 8 to the first long tube 10. A valve core and a spring are arranged inside the anti-backflow one-way valve. The valve core is arranged at the interface with the first short tube 8, and a spring is connected to the outer wall of the valve core. When the negative pressure is started, the negative pressure state causes the spring to contract and pull the valve core to move backward, opening the opening to suck in the effusion. If the pressure of the sucked effusion is too high, the spring will return to its original position, the valve core will return to its original position to close the opening, preventing the backflow of the effusion. The first long tube 10 is arranged on the outer wall of the intelligent host 12, and the intelligent host 12 transports the collected effusion to the drainage storage tank through a negative pressure pump.

[0064] Please refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 6, an embodiment provided by the present invention: a double - lumen drainage tube of an intelligent dual - mode trauma drainage system, wherein an intelligent monitoring module is arranged inside the outer tube 2; the intelligent monitoring module includes: an intelligent host 12, a flow sensor 24, a bio - impedance sensor 26, and an optical - fiber pressure sensor 27;

[0065] The inner wall of the tube body of the drainage tube 1 is provided with a bio - impedance sensor 26 and an optical - fiber pressure sensor 27. The data lines of the bio - impedance sensor 26 and the optical - fiber pressure sensor 27 are embedded in the wall of the drainage tube 1 and are connected to the first data line 4. The flow sensor 24 is embedded on the pulse injection hole 21 on the inner wall of the flushing cavity 31. The data line of the flow sensor 24 is embedded in the wall of the outer tube 2 and is connected to the second data line 5. The first data line 4 and the second data line 5 are respectively connected to the first communication interface 28 and the second communication interface 29 on the intelligent host 12;

[0066] The intelligent host 12 is provided with a first communication interface 28 and a second communication interface 29; the intelligent host 12 includes: an intelligent monitor 35, a mechanical rod 13, and a display screen 14; at the top of the outer wall of the intelligent monitor 35, a mechanical rod 13 is installed. The first communication interface 28 and the second communication interface 29 are arranged on the mechanical rod 13, and the display screen 14 is connected to the outer wall of the mechanical rod 13;

[0067] Further, a bio - impedance sensor 26 and an optical - fiber pressure sensor 27 are installed in the wall of the drainage tube 1. Four electrodes are arranged on the outer wall of the bio - impedance sensor 26. The electrodes are made of Ag conductive material to ensure biocompatibility and low polarization effect. The four electrodes are in full contact with the accumulated fluid in the drainage tube 1. An excitation current I is applied to the two electrodes close to the wound surface among the four electrodes, and then the other two electrodes detect the voltage V response. The impedance is calculated according to Ohm's law: Z = V / I; the changes in the composition and physiological state of the tissue are reflected through different impedances. The condition of the accumulated fluid in the patient's wound is judged through the changes in the physiological state. If the impedance increases, it may be that the amount of accumulated fluid increases and timely drainage is required. If the impedance decreases, it may be that the amount of accumulated fluid decreases and pulse flushing is required;

[0068] The optical - fiber pressure sensor 27 senses the pressure change by using the characteristics of optical fiber, specifically an FBG sensor. FBG is a fiber Bragg grating, and a reflection grating is formed through a periodic refractive index modulation structure;

[0069] The reflection wavelength formula of FBG: λ B = 2nA;

[0070] n: the effective refractive index of the optical - fiber core;

[0071] Λ: grating period;

[0072] λ B : reflection wavelength;

[0073] When the fluid accumulation pressure acts on the optical fiber, the length and refractive index of the optical fiber change, resulting in a shift in the reflection wavelength. After calculating the wavelength, the wavelength change amount is calculated;

[0074] Formula:

[0075] △λ B : Wavelength change amount;

[0076] P e : Photoelastic coefficient of the optical fiber, reflecting the change of refractive index with strain;

[0077] ε: Axial strain, ε = △L / L, where L is the length of the optical fiber;

[0078] α: Coefficient of thermal expansion;

[0079] ξ: Thermo-optic coefficient, the change of refractive index with temperature;

[0080] △T: Temperature change;

[0081] Then the wavelength change amount is converted into a pressure value: Δλ = S P ·P + S T ·ΔT;

[0082] S P : Pressure sensitivity;

[0083] S T : Temperature sensitivity;

[0084] After calculating the pressure, the intelligent host 12 detects whether the pressure changes. If it does not change, it means normal. If the pressure increases, it may be that the negative pressure in the drainage tube 1 is too large. At this time, the intelligent host 12 will reduce the negative pressure value to avoid tissue damage. The bio-impedance sensor 26 and the optical fiber pressure sensor 27 are connected through the data line and the first data line 4 embedded in the wall of the drainage tube 1, and are connected to the first communication interface 28 through the first data line 4 to transmit the monitored data to the intelligent host 12 and display it on the display screen 14.

[0085] Please refer to Figure 1 、 Figure 4 、 Figure 6 and Figure 8, an embodiment provided by the present invention: a double - cavity drainage tube of an intelligent dual - mode trauma drainage system. A bio - impedance sensor 26 and an optical - fiber pressure sensor 27 are installed on the inner wall of the tube body of the drainage tube 1. The data lines of the bio - impedance sensor 26 and the optical - fiber pressure sensor 27 are embedded in the wall of the drainage tube 1 and connected to the first data line 4. The flow sensor 24 is embedded on the pulse injection holes 21 on the inner wall of the flushing cavity 31. The data line of the flow sensor 24 is embedded in the wall of the outer tube 2 and connected to the second data line 5. The connection end of the flushing cavity 31 is connected to the second short tube 9. The other end of the second short tube 9 is connected to the second anti - reflux check valve 7. The outer wall side of the second anti - reflux check valve 7 is connected to the second long tube 11;

[0086] The second long tube 11 is connected to a pulse flushing module; the pulse flushing module includes: a pressure pump 15, a flushing liquid storage tank 20, and a communication module 17; a base 16 is installed at the top of the outer wall of the pressure pump 15. The top of the outer wall of the base 16 is connected to the communication module 17. The communication module 17 is connected to the intelligent monitor 35 through the WiFi communication protocol. Water outlet pipes 33 and water inlet pipes 18 are arranged on both sides of the outer wall of the pressure pump 15. The water outlet pipe 33 is connected to the second long tube 11; the water inlet pipe 18 is connected to a connecting pipe 19. The connecting pipe 19 is arranged on the outer wall side of the flushing liquid storage tank 20;

[0087] Furthermore, when the intelligent host 12 monitors that the amount of accumulated fluid in the patient's body decreases or the flushing interval reaches three hours, the intelligent host 12 is connected to the communication module 17 through the WiFi communication protocol in the intelligent monitor 35 and sends a start command. After the pressure pump 15 is started, the water inlet pipe 18 and the connecting pipe 19 are connected. The connecting pipe 19 is arranged on the outer wall side of the flushing liquid storage tank 20. Under the action of the pressure pump 15, the flushing liquid in the flushing liquid storage tank 20 is pumped out, and the flushing liquid is transmitted to the second long tube 11 through the water outlet pipe 33. The flushing liquid is physiological saline. Then the second long tube 11 transmits the flushing liquid to the second short tube 9 through the second anti - reflux check valve 7. The second short tube 9 is connected to the connection end of the flushing cavity 31, and the flushing liquid is transported to the flushing cavity 31. Under the pressure of the pressure pump 15, the flushing liquid flows from the pulse injection holes 21 on the wall of the flushing cavity 31 to the patient's trauma surface in the form of high - frequency pulses, forming a cycle mode of injection - pause - injection, and efficiently flushing the trauma surface.

[0088] Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 7 , an embodiment provided by the present invention: a double - cavity drainage tube of an intelligent dual - mode trauma drainage system. An intelligent monitoring module is arranged inside the outer tube 2; the intelligent monitoring module includes: an intelligent host 12, a flow sensor 24, a bio - impedance sensor 26, and an optical - fiber pressure sensor 27;

[0089] A biological impedance sensor 26 and an optical fiber pressure sensor 27 are installed on the inner wall of the tube body of the drainage tube 1. The data lines of the biological impedance sensor 26 and the optical fiber pressure sensor 27 are embedded in the wall of the drainage tube 1 and connected to the first data line 4. The flow sensor 24 is embedded on the pulse injection hole 21 on the inner wall of the flushing cavity 31. The data line of the flow sensor 24 is embedded in the wall of the outer tube 2 and connected to the second data line 5. The first data line 4 and the second data line 5 are respectively connected to the first communication interface 28 and the second communication interface 29 on the intelligent host 12;

[0090] The intelligent host 12 is provided with a first communication interface 28 and a second communication interface 29; the intelligent host 12 includes: an intelligent monitor 35, a mechanical rod 13 and a display screen 14; a mechanical rod 13 is installed at the top of the outer wall of the intelligent monitor 35. The first communication interface 28 and the second communication interface 29 are provided on the mechanical rod 13, and the outer wall of the mechanical rod 13 is connected to the display screen 14;

[0091] Furthermore, a flow sensor 24 is embedded on the pulse injection hole 21 of the wall of the flushing cavity 31. A turbine, a bearing, a magnet and a Hall element are arranged in the flow sensor 24. Four turbines are arranged on the bearing, the magnet is embedded in the turbine, and the Hall element is installed in the flow sensor 24. When the flushing liquid flows through the sensor, it impacts the turbine blades and pushes the turbine to rotate around the axis;

[0092] Formula: n = k·v;

[0093] n is the rotational speed;

[0094] v is the flow velocity;

[0095] k is a proportionality coefficient related to the geometric parameters of the turbine;

[0096] After calculating the rotational speed, the magnet on the turbine periodically cuts the magnetic induction line through the sensor as it rotates, and then the Hall element detects the magnetic field change and outputs a pulse signal. The pulse frequency is proportional to the rotational speed of the turbine;

[0097] Pulse frequency: f = n·m;

[0098] m is the number of turbine blades;

[0099] Flow formula: Q = f / K;

[0100] Q is the flow rate;

[0101] K is the instrument coefficient;

[0102] After the sensor calculates the flow rate, the flow sensor 24 is connected to the second data line 5 through a data line embedded in the wall of the outer tube 2. The second data line 5 is connected to the second communication interface 29 on the intelligent host 12 to transmit the flow data to the intelligent host 12. The intelligent monitor 35 in the intelligent host 12 compares the flow data before and after. If the flow rate drops suddenly, it may indicate that the pulse injection holes 21 are blocked. At this time, the intelligent monitor 35 sends an instruction to the communication module 17 to start high-pressure pulse flushing, increase the pumping power of the pressure pump 15, flush out the blocked object, and then suck it into the drainage storage tank through the drainage tube 1 under negative pressure.

[0103] Working principle: First, select the model of the drainage tube 1 according to the size of the wound surface, place the double lumen tube deep in the wound surface to ensure that the side holes of the drainage cavity 30 cover the target area. Then, adjust the double lumen tube to a suitable length through the length adjustment module, and set the initial parameters of the negative pressure value, flushing interval, and pulse frequency. After the system starts, drainage and flushing are carried out.

[0104] Then, the 3 groups of drainage holes 22 at the wound surface end of the drainage tube 1 continuously absorb the wound exudate, necrotic tissue, and foreign bodies. The drainage fluid enters the storage tank of the intelligent monitor 35 through the first anti-backflow one-way valve 6 to avoid backflow pollution. Then, flushing is carried out. The pressure pump 15 extracts liquid from the flushing liquid storage tank 20 and sprays the flushing liquid through the pulse injection holes 21 in a high-frequency pulse mode to clean the wound surface.

[0105] Real-time condition monitoring and precise treatment: The present invention adopts a bioimpedance sensor and a fiber optic pressure sensor, which can accurately monitor the internal condition of the wound in real time. The bioimpedance sensor reflects the changes in tissue composition and physiological state by detecting the impedance of the accumulated fluid. For example, during the wound treatment process, if the impedance increases, it indicates that the amount of accumulated fluid increases, and the doctor can adjust the drainage strategy in time and increase the drainage intensity to prevent the accumulation of fluid from causing infection. If the impedance decreases, it may indicate that the amount of accumulated fluid decreases, and at this time, pulse flushing can be considered to maintain the wound surface clean. The fiber optic pressure sensor can accurately measure the pressure in the wound cavity, and the intelligent host automatically adjusts the negative pressure value according to the pressure change. When the pressure is too high, it indicates that the negative pressure in the drainage tube may be too high, which will cause damage to the tissue. The intelligent host reduces the negative pressure in time to avoid tissue damage, realizes precise treatment, and improves the safety and effectiveness of treatment.

[0106] Prevention of complications: Accurate sensor monitoring helps prevent the occurrence of complications. By mastering key information such as the concentration of accumulated fluid and the pressure in the wound cavity in real time, doctors can timely discover potential problems and take measures. In infectious wounds, the sensor can monitor the change in the concentration of pathogens in the accumulated fluid. If the concentration increases, it indicates that the infection is aggravated, and the doctor can intervene in advance, adjust the use of antibiotics or increase the flushing frequency, effectively contain the spread of infection, and reduce the risk of serious complications such as sepsis, ensuring the life and health of patients.

[0107] Practical Application Value of Optimizing the Effect of Pulsed Irrigation

[0108] Efficient debridement and promotion of healing: The pulsed irrigation module adopts a high-frequency pulsed mode. Compared with traditional continuous irrigation, it can more effectively remove stubborn attachments such as necrotic tissue and biofilm on the wound surface. In the treatment of deep wounds, the powerful impact force of the pulse can penetrate deep into the wound, break up and wash away the deep necrotic tissue, creating good conditions for wound healing. For example, in the treatment of burn wounds, pulsed irrigation can quickly remove the eschar and necrotic tissue formed after burns, reduce bacterial growth, promote the growth of new tissue, accelerate wound healing, and shorten the hospital stay of patients.

[0109] Maintaining the stability of tissue microcirculation: The intermittent flushing method of the pulse avoids the damage to tissues caused by traditional continuous irrigation and maintains the stability of tissue microcirculation. Continuous irrigation may disrupt the normal blood circulation of the tissues around the wound surface, affecting the nutrient supply and metabolic waste excretion of the tissues, which is not conducive to wound healing. However, the pulsed irrigation of the present invention can effectively clean the wound surface when spraying the irrigation fluid, and allow the tissues to restore normal blood flow when paused, ensuring the normal physiological functions of tissue cells, improving the wound repair ability, reducing tissue damage and inflammatory reactions caused by irrigation, and enhancing the overall effect of wound management.

[0110] Finally, the intelligent monitoring module real-time monitors the impedance, hydraulic pressure and flow data in the lumen through multiple sensors, analyzes and processes these data, and automatically regulates abnormal data conditions, significantly improving the treatment effect and reducing the risk of complications.

[0111] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An intelligent dual-mode wound drainage system dual-lumen drainage tube, comprising an outer tube (2) and a dual-lumen drainage module, characterized in that: The inner wall of the outer tube (2) is provided with a double-lumen drainage module; The double-cavity drainage module comprises: a drainage tube (1), a drainage cavity (30), a flushing cavity (31), a polymer membrane (25), a pulse injection hole (21) and a drainage hole (22); The outer tube (2) is internally divided into a drainage chamber (30) and a flushing chamber (31). The drainage chamber (30) and the flushing chamber (31) are arranged in parallel, and the chambers are completely isolated by a polymer diaphragm (25). A drainage tube (1) is installed inside the drainage chamber (30). The tube body of the drainage tube (1) is divided into a connecting end and a wound surface end. The inner wall of the wound surface end is provided with three groups of drainage holes (22), each group having four drainage holes (22). The inner wall of the flushing chamber (31) is provided with two groups of pulse injection holes (21), each group having four pulse injection holes (21). The tube wall of the drainage chamber (30) is provided with two groups of side holes, each group having four side holes.

2. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 1, characterized in that: The inner wall of the drainage tube (1) is covered with a nano-hydrophobic coating (34), and a conical head (23) is installed at the top of the outer wall of the drainage tube (1). The surface of the conical head (23) is smooth, thereby reducing tissue damage.

3. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 1, characterized in that: An intelligent monitoring module is arranged inside the outer tube (2); The intelligent monitoring module comprises: an intelligent host (12), a flow sensor (24), a bioimpedance sensor (26) and an optical fiber pressure sensor (27); The inner wall of the drainage tube (1) is provided with a bioimpedance sensor (26) and an optical fiber pressure sensor (27); data lines of the bioimpedance sensor (26) and the optical fiber pressure sensor (27) are embedded in the wall of the drainage tube (1) and are connected to the first data line (4); a flow sensor (24) is embedded in a pulse injection hole (21) on the inner wall of the flushing cavity (31); the data line of the flow sensor (24) is embedded in the wall of the outer tube (2) and is connected to the second data line (5); the first data line (4) and the second data line (5) are respectively connected to a first communication interface (28) and a second communication interface (29) on the intelligent host (12).

4. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 3, characterized in that: The intelligent host (12) is provided with a first communication interface (28) and a second communication interface (29); The intelligent host (12) includes: an intelligent monitor (35), a mechanical lever (13) and a display screen (14); A mechanical rod (13) is installed at the top of the outer wall of the intelligent monitor (35), a first communication interface (28) and a second communication interface (29) are arranged on the mechanical rod (13), and a display screen (14) is connected to the outer wall of the mechanical rod (13).

5. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 1, characterized in that: The connecting end of the flushing cavity (31) is connected to the second short tube (9), the other end of the second short tube (9) is connected to the second anti-backflow check valve (7), and the outer wall side of the second anti-backflow check valve (7) is connected to the second long tube (11).

6. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 5, characterized in that: The second long tube (11) is connected to the pulse flushing module; The pulse flushing module comprises: a pressure pump (15), a flushing liquid storage tank (20) and a communication module (17); A base (16) is installed at the top of the outer wall of the pressure pump (15), and a communication module (17) is connected to the top of the outer wall of the base (16). The communication module (17) is connected to the intelligent monitor (35) through a WiFi communication protocol. A water outlet pipe (33) and a water inlet pipe (18) are arranged on both sides of the outer wall of the pressure pump (15), and the water outlet pipe (33) is connected to the second long pipe (11).

7. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 6, characterized in that: The water inlet pipe (18) is connected to a connecting pipe (19), and the connecting pipe (19) is arranged on the side of the outer wall of the flushing liquid storage tank (20).

8. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 1, characterized in that: The connection end of the drainage chamber (30) is connected to the first short tube (8), the other end of the first short tube (8) is connected to the first anti-backflow check valve (6), the outer wall side of the first anti-backflow check valve (6) is connected to the first long tube (10), and the first long tube (10) is arranged on the outer wall side of the intelligent monitor (35).

9. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 8, characterized in that: The first long tube (10) is connected to the drainage storage tank inside the intelligent monitor (35) to discharge the drained liquid into the drainage storage tank.

10. The intelligent dual-mode wound drainage system double-lumen drainage tube according to claim 1, characterized in that: The outer wall of the outer tube (2) is provided with a length adjustment module; The length adjustment module comprises: an adjustment ring (3) and a thread groove (32); The adjusting ring (3) is sleeved on the outer wall of the outer tube (2), and its inner wall is provided with an internal thread that matches with the thread groove (32) on the outer wall of the outer tube (2). When the adjusting ring (3) rotates clockwise, the outer tube (2) is driven to extend axially, and when the adjusting ring (3) rotates counterclockwise, the outer tube (2) is driven to contract axially.

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