Dual lumen counterdamped subcutaneous emphysema evacuation and drainage combination device

Abstract

The application belongs to the technical field of medical devices, and particularly relates to a double-cavity collision type subcutaneous emphysema removing and draining combined device; the device comprises a supply assembly, a removing assembly and a draining assembly; the supply assembly comprises a first column body, a second cavity is arranged in the first column body, and a second block is arranged in the second cavity; the removing assembly comprises a second pipe body which is communicated with the first column body; through cooperation of the supply assembly, the removing assembly and the draining assembly, a backflow channel is formed between the second pipe body and a third pipe body, and a jet induction area is formed at a first cone body at an end of the third pipe body; the device can not only continuously remove subcutaneous air, but also double-limit the drainage negative pressure and the supply pressure, thereby reducing the problems of suction port blockage and discontinuous drainage in a traditional simple suction mode.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically a dual-cavity countercurrent subcutaneous emphysema clearance and drainage combination device. Background Technology

[0002] Medical thoracoscopic surgery and related thoracic interventional procedures are widely used, but postoperative complications still require careful management. Current data indicates that subcutaneous emphysema is a complication of medical thoracoscopic surgery, with an incidence rate of 0.6% to 4.9%. Its main causes include poor drainage, excessively large gaps between the drainage tube and the chest wall, and loose surgical incision sutures, allowing gas to enter the subcutaneous tissue along the sidewall of the drainage tube. Regarding postoperative infection control, clinical management emphasizes maintaining adequate drainage while administering anti-infection treatment to minimize the adverse impact of complications on patient recovery.

[0003] Chinese Patent Announcement CN222585121U discloses a subcutaneous drainage device, including a reservoir bag and a drain port. Through the reservoir bag, suction collector, guide tube, and drainage tube, the drainage tube can be inserted into the subcutaneous lesion site of the patient via a puncture needle. The suction collector creates negative pressure. The components of this device are all made from existing medical infusion components, which can save production costs. The components are also small and can effectively avoid incision pain during subcutaneous drainage, making it easy to carry.

[0004] In the application of the above-mentioned technologies, for postoperative subcutaneous emphysema, subcutaneous puncture aspiration and conventional negative pressure drainage can achieve basic air removal. However, since the drainage channel often uses a single aspiration path, after the loose subcutaneous tissue is inserted, the soft tissue around the drainage port is compressed and brought together, causing it to adhere to the drainage site. This reduces the local ventilation cross-section, increases drainage resistance, and makes it difficult to maintain continuous air removal. Furthermore, operators usually maintain air removal by increasing the external aspiration intensity, which further concentrates local tissue towards the drainage port, leading to increased negative pressure fluctuations and decreased stability of continuous drainage. For contaminated subcutaneous emphysema that requires simultaneous irrigation, the existing single-channel structure also has the problem of interference between the irrigation path and the air removal path. When the irrigation fluid and gas share the same path, local stagnation is more likely to occur, affecting drainage efficiency. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies and solve the problem of difficulty in maintaining continuous venting in drainage devices, this invention proposes a dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device.

[0006] The preferred technical solution adopted by the present invention to solve its technical problem is: the dual-cavity counter-current subcutaneous emphysema removal and drainage combination device of the present invention, comprising: A supply component includes a first column, a second cavity being provided inside the first column, and a second block being provided inside the second cavity; The cleaning component includes a second tube body communicating with the first column body, a third tube body being provided inside the second tube body, the end of the third tube body being connected to a first cone body, and the first cone body being provided with a first hole body; The drainage component includes a fourth hole and a fifth hole disposed on the first column; Let the flow direction of the medium in the third tube toward the first cone be the first direction, and let the return direction of the medium along the second tube and the third tube be the second direction. The patient's subcutaneous gas returns along the second direction, the fifth orifice replenishes gas in the second direction, and the second block moves to open the second cavity.

[0007] Preferably, the supply component further includes a first tube communicating with the first column, the first tube being connected to a first block, a second column being rotatably disposed within the first block, a first cavity being formed between the second column and the first block, and the first cavity communicating with different medium inlets when the second column rotates.

[0008] Preferably, the first block body is provided with a first piece, which is located at the entrance of the first cavity. When the medium flows into the first cavity, the first piece opens, and when the medium flows in the opposite direction, the first piece blocks the entrance.

[0009] Preferably, the supply component further includes a first elastic element disposed in the second cavity, the first elastic element abutting against the second block, and the second block moving against the elastic force of the first elastic element when pushed by the medium pressure.

[0010] Preferably, the cleaning assembly further includes a first ring body disposed on the outside of the second tube body, a disc body slidingly disposed on the outside of the second tube body, the disc body being connected to a second elastic element, the first column body being connected to a first sleeve body, the first sleeve body abutting against the disc body, and the first sleeve body moving pushes the disc body to move along the second tube body.

[0011] Preferably, the third tube is coaxially arranged with the second tube, and a reflux channel is formed between the outer wall of the third tube and the inner wall of the second tube. The first holes are distributed circumferentially along the first cone and are inclined toward the inner wall of the second tube.

[0012] Preferably, the cleaning assembly further includes a second ring and a third ring disposed within the second tube, the second ring being located on the outer periphery of the first cone, an annular gap being formed between the second ring and the first cone, and the third ring being connected between the second ring and the second tube.

[0013] Preferably, the first cone is further provided with a second hole, and the cleaning component further includes a second piece disposed in the third ring, the second piece being located in the outflow path of the second hole, and the second piece being driven to bounce when the medium flows out through the second hole.

[0014] Preferably, the cleaning assembly further includes a cover connected to the outside of the second tube insertion end, the cover having a third hole, and the outer wall of the second tube having a groove within the coverage area of ​​the cover, the third hole and the groove together forming an inlet path leading to the insertion end.

[0015] Preferably, the drainage assembly further includes a fourth tube, a cylinder is provided inside the first column, a third column is slidably provided inside the cylinder, a third elastic element is provided on one side of the third column, the cylinder is connected to a fourth hole and a fifth hole, the third column can move under negative pressure, a third cavity is provided between the fourth hole and the fourth tube, a third plate is provided inside the third cavity, the third plate opens when the medium flows in the second direction, and blocks the third cavity when the medium flows in the reverse direction.

[0016] The beneficial effects of this invention are as follows: 1. The dual-chamber countercurrent subcutaneous emphysema removal and drainage combination device of the present invention, through the cooperation of the supply component, the removal component and the drainage component, forms a return channel between the second tube and the third tube, and forms a jet induction zone at the first cone at the end of the third tube. By utilizing the gas replenishment and pressure regulation relationship formed by the fourth and fifth orifices, when the medium is transported along the first direction, it can continuously guide the patient's subcutaneous gas to return along the second direction at the insertion end. At the same time, when the negative pressure is too large, gas is replenished to the second direction by the fifth orifice. When the supply pressure is too large, the second block moves to open the second chamber to release pressure. It can not only continuously remove subcutaneous gas, but also dually limit the drainage negative pressure and supply pressure, reducing the problems of suction port blockage and discontinuous drainage in the traditional simple suction method. 2. The dual-cavity countercurrent subcutaneous emphysema removal and drainage combination device of the present invention forms a medium switching and unidirectional introduction relationship through the first block, the second column, the first cavity and the first sheet, so that the gas medium and the liquid medium can be switched as needed and enter the insertion end in stages. With the multi-path introduction formed by the second ring, the third ring, the second hole, the second sheet, the cover, the third hole and the groove, the insertion end still maintains smooth backflow during the flushing process. And with the help of the cylinder, the third column, the third elastic element, the cavity and the third sheet, an automatic gas replenishment and pressure regulation and unidirectional check relationship are formed, so that the recovered gas and liquid are stably discharged, reducing backflow contamination and liquid retention, which can improve the safety of the device in the treatment of contaminated subcutaneous emphysema. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional schematic diagram of the first block structure of the present invention; Figure 3 This is a cross-sectional view of the first block structure of the present invention; Figure 4 This is a cross-sectional view of the first cavity structure of the present invention; Figure 5 This is a cross-sectional view of the second cavity structure of the present invention; Figure 6 This is a three-dimensional schematic diagram of the first body structure of the present invention; Figure 7 This is a three-dimensional schematic diagram of the disk structure of the present invention; Figure 8 This is a three-dimensional schematic diagram of the first cone structure of the present invention; Figure 9 This is a cross-sectional view of the second sheet structure of the present invention; Figure 10 This is a cross-sectional view of the cylindrical structure of the present invention; Figure 11 This is a cross-sectional view of the third column structure of the present invention; Figure 12 This is a cross-sectional view of the third sheet structure of the present invention.

[0019] In the diagram: 1. Supply assembly; 11. First column; 111. First tube; 12. First block; 13. Second column; 131. First cavity; 14. First sheet; 15. Second cavity; 16. Second block; 17. First elastic element; 2. Clearing assembly; 21. Second tube; 211. First ring; 22. Disc; 221. Second elastic element; 23. First sleeve; 24. Third tube; 25. First cone; 251. First hole; 26. Second ring; 261. Third ring; 27. Second hole; 271. Second plate; 28. Cover; 281. Third hole; 29. ​​Groove; 3. Drainage assembly; 31. Fourth tube; 32. Cylinder; 33. Fourth hole; 34. Fifth hole; 35. Third column; 36. Third elastic element; 37. Third cavity; 38. Third plate. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figure 1As shown, this embodiment discloses a dual-chamber countercurrent subcutaneous emphysema clearance and drainage combination device. The device includes a supply component 1, a clearance component 2, and a drainage component 3. The supply component 1 is used to deliver a gaseous medium or a liquid drug medium to one end and to limit the pressure of the medium entering the device. The clearance component 2 is located on the side of the supply component 1 and is used to insert into the subcutaneous emphysema site of the patient, and to form a spray induction effect on the liquid drug at the insertion end. The drainage component 3 is located on the side of the supply component 1 and is used to regulate the negative pressure formed by the device and to discharge the gas and liquid for collection by an external structure.

[0022] like Figure 2 As shown, the first column 11 in the supply component 1 preferably adopts a thick-walled columnar structure. A central channel is formed inside the first column 11 along the central axis. A pressure relief channel and a drainage channel parallel to the central channel are also formed inside the first column 11. The first tube 111 is fixedly connected to one side of the first column 11. The first tube 111 preferably adopts a short tube structure. The inner hole of the first tube 111 is connected to the central channel inside the first column 11. The external gas source pipeline and the liquid supply pipeline are both connected to the first tube 111. The connection between the first column 11 and the second tube 21, the connection between the first column 11 and the fourth tube 31, and the connection between the first column 11 and the first tube 111 are all sealed to separate the central channel, the pressure relief channel and the drainage channel from each other. The pressure relief channel is used to discharge part of the medium when the medium supply pressure exceeds the preset value. The drainage channel is used to receive the gas and liquid returning from the cleaning component 2 in the second direction.

[0023] like Figure 2 and Figure 3As shown, the first block 12 is located at the end of the first tube 111 away from the first column 11. The first block 12 is preferably block-shaped and has a three-way structure. The first block 12 has two liquid inlets and one liquid outlet. One liquid inlet is used to connect to an external gas source, and the other liquid inlet is used to connect to an external medicine supply structure. The liquid outlet of the first block 12 is connected to the first tube 111. The second column 13 is rotatably disposed inside the first block 12. The second column 13 is preferably a short column structure, with one end extending out of the first block 12. This extended end is used for manual rotation by the user, thereby driving the second column 13... 3. When rotated, the outer wall of the second column 13 fits against the inner wall of the first block 12, and a first cavity 131 is formed between the second column 13 and the first block 12. The first cavity 131 rotates with the second column 13 and can be connected to different liquid inlets of the first block 12 in sequence. Through this switching action, the first block 12 and the second column 13 form two connection states, namely the gas supply state and the flushing state. After the second column 13 rotates, the unconnected liquid inlets are in a closed state, thereby preventing gas and medicine from entering the first tube 111 at the same time, so that the gas supply state and the flushing state can be clearly separated, making it convenient for medical staff to switch according to the treatment needs.

[0024] like Figure 3As shown, the first piece 14 is disposed inside the liquid inlet of the first block 12. The first piece 14 preferably adopts an elastic sheet structure. One end of the first piece 14 is fixed to the inner wall of the first block 12, and the other end faces the first cavity 131 and is suspended within the first cavity 131. When the liquid enters the first block 12, the first piece 14 opens into the first cavity 131. When the liquid flows back, the first piece 14 blocks the inlet of the first cavity 131, thereby blocking the backflow path of the liquid and preventing it from flowing back. The free end of the first piece 14 covers the inner area of ​​the liquid inlet facing the first cavity 131. When the liquid flows from the outside to the inside, it pushes the first piece 14 to deflect, causing the first piece 14 to move away from the inlet edge, allowing the liquid to enter the first cavity 131. When the liquid in the first cavity 131 exhibits a reverse flow tendency, the first piece 14... Under the elastic action, it re-adheres to the edge of the inlet, thus forming a one-way fluid replenishment relationship. After the medicine enters the insertion end in stages, the inner area of ​​the cover 28 is less likely to form an instantaneous excessive accumulation of fluid. This cooperation relationship is conducive to maintaining the smooth flow path along the second direction during the flushing process. When the second column 13 rotates to the air supply position, the external air source enters the central channel of the first column 11 through the first block 12 and the first tube 111. When the second column 13 rotates to the flushing position, the medicine first enters the first cavity 131, and then the medicine enters the central channel of the first column 11 through the first tube 111. The volume of the first cavity 131 is smaller than the total internal volume of the first block 12. Each time the first cavity 131 rotates to the outlet, the first cavity 131 only discharges a portion of the medicine, which allows the medicine to enter one end in stages, avoiding the local accumulation of medicine under the patient's skin.

[0025] like Figure 5As shown, the second cavity 15 is disposed inside the first column 11, and is located between the first tube 111 and the cleaning assembly 2. The second cavity 15 preferably has a short cavity structure. The second block 16 is slidably disposed within the second cavity 15. The second block 16 preferably has a valve core structure that is thicker at the front and thinner at the back. One end of the second block 16 abuts against the valve port area of ​​the second cavity 15. The first elastic element 17 is disposed within the second cavity 15 and located on one side of the second block 16. The first elastic element 17 preferably has a compression spring structure. One end of the first elastic element 17 abuts against the second block 16, and the other end abuts against the inner wall of the first column 11. When the pressure of the gas or liquid supplied by the device is within the normal range, the first elastic element 17 can push the second block 16 to seal the pressure relief port of the second cavity 15. When the pressure of the gas or liquid supplied by the device increases, the second block 16 overcomes the pressure of the first elastic element. The elastic movement of 17 causes the first elastic element 17 to contract. At this time, the second block 16 no longer blocks the pressure relief port of the second cavity 15, allowing the pressure relief port of the second cavity 15 to open. Part of the medium supplied by the device is discharged through the pressure relief port of the second cavity 15, thereby avoiding excessive injection pressure of the device. The second block 16 preferably adopts an axial sliding structure. The pressure relief port of the second cavity 15 is connected to the outside of the first column 11 and the independent recovery structure. The medium discharged through the pressure relief port no longer enters the third tube 24. The front thick part of the second block 16 is used to fit with the valve port area, and the rear thin part of the second block 16 is used to provide installation space for the first elastic element 17. The second block 16 moves linearly along the medium flow direction, which can reduce the influence of device posture changes on the pressure relief action. It can automatically reduce the amount of medium entering the insertion end along the first direction when the supply pressure increases, thereby reducing the pressure on the patient tissue and the impact of liquid.

[0026] like Figure 6 and Figure 7As shown, the second tube 21 in the cleaning component 2 is fixedly connected to one side of the first column 11. The second tube 21 preferably has a slender straight tube structure. One end of the second tube 21 is inserted into the first column 11, and the connection is sealed and fixed. A first ring 211 is disposed on the outer wall of the second tube 21. The first ring 211 preferably has a ring structure and is located close to the first column 11. A disc 22 is sleeved on the outside of the second tube 21. The disc 22 preferably has a disc structure and is located on the side of the first ring 211 away from the first column 11. The inner hole of the disc 22 slides in conjunction with the outer wall of the second tube 21. A second elastic element 221 is disposed on the side of the disc 22 away from the first ring 211. The second elastic element 221 preferably has a skirt structure, and its edge... When the second elastic element 221 is extended outwards and pressed against the incision site on the patient's skin, it can disperse the pressure at the point of contact with the patient's skin through its elasticity. The first sleeve 23 is fitted outside the second tube 21 and is located on one side of the disc 22. The first sleeve 23 preferably adopts a hollow screw sleeve structure. One end of the first sleeve 23 is threaded to the side of the first column 11, and the other end of the first sleeve 23 abuts against the side wall of the disc 22. When the user tightens the first sleeve 23 by hand, the first sleeve 23 pushes the disc 22 to move under the action of the thread. The disc 22 drives the second elastic element 221 to press against the patient's skin surface. The first ring 211 restricts the stroke of the disc 22, preventing it from getting closer to the first column 11, thereby stabilizing the second tube 21 and reducing the gap between the incision and the second tube 21.

[0027] like Figure 6 and Figure 7As shown, the third tube 24 is disposed inside the second tube 21. The third tube 24 preferably adopts a thin-walled straight tube structure. The third tube 24 and the second tube 21 are coaxially arranged. One end of the third tube 24 is fixedly connected to the central channel inside the first column 11. One end of the third tube 24 extends to the vicinity of the end of the second tube 21 inserted under the patient's skin. The inner hole of the third tube 24 forms a gas supply channel and a flushing channel. An annular reflux channel is formed between the outer wall of the third tube 24 and the inner wall of the second tube 21. The medium supplied by the supply component 1 flows in the third tube 24 along the first direction. The gas and liquid medicine recovered at the other end flow back in the annular reflux channel along the second direction. The end of the third tube 24 closest to the first column 11 is the input end, the end of the third tube 24 closest to the first cone 25 is the output end, and the end of the second tube 21 closest to the cover 28 is the insertion end. The outer wall of the third tube 24 and the inner wall of the second tube 21 maintain an annular gap, which is continuously distributed along most of the length direction, thereby forming a through annular return channel. After the input end of the third tube 24 is sealed and fixed to the central channel of the first column 11, the supplied medium can only be transported to the insertion end along the first direction, and the gas and liquid recovered at the insertion end can only flow back to the connection end along the second direction through the annular return channel, thereby forming a stable dual-cavity flow split relationship.

[0028] like Figure 8 As shown, the first cone 25 is fixedly connected to one end of the third tube 24. The first cone 25 preferably adopts a short cone structure with one end closed. The maximum outer diameter of the first cone 25 is greater than the outer diameter of the third tube 24, and the maximum outer diameter of the first cone 25 is smaller than the inner diameter of the second tube 21. The first hole 251 is opened on the outer periphery of the first cone 25. The first holes 251 are distributed at an angle, and each first hole 251 is inclined towards the inner wall of the second tube 21. After the medium enters the first cone 25 through the third tube 24 in the first direction, it is ejected at high speed from each first hole 251. The high-speed jet forms a low-pressure zone on the outer periphery of the first cone 25. This low-pressure zone drives the subcutaneous gas and flushing fluid to the annular return channel in the second direction. This jet direction can continuously form a negative pressure induction relationship between the first cone 25 and the second annular body 26, so that the gas and liquid around the insertion end actively approach the annular gap.

[0029] like Figure 8As shown, the second ring 26 is disposed on the inner side of one end of the second tube 21. The second ring 26 preferably adopts a short ring cylinder structure. The second ring 26 is fixed on the inner wall of the second tube 21 and is located on the outer periphery of the first cone 25. An annular gap is formed between the inner wall of the second ring 26 and the outer wall of the first cone 25. This gap serves as an induction suction port. The third ring 261 is disposed on one side of the second ring 26. The third ring 261 preferably adopts an annular transition structure with a smaller front and a larger rear. The third ring 261 is connected to the second ring 26 and the inner wall of the second tube 21. The third ring 261 can gradually guide the high-speed mixed flow behind the annular gap into the annular return channel, thereby reducing the flow resistance of the medium. The width of the annular gap is smaller than the axial length of the second ring 26, so that the gas and liquid entering the annular gap first gather in the narrow gap and then diffuse along the second direction to the annular return channel through the third ring 261. The inner wall of the third annulus 261 is a gradually expanding guide surface, which can reduce the local impact and turbulent accumulation of the return medium. This structure is beneficial for maintaining continuous suction at the insertion end and stable discharge at the rear end.

[0030] like Figure 9 As shown, a second orifice 27 is formed on the surface of the first cone 25. The diameter of the second orifice 27 is smaller than that of the first orifice 251. The second orifice 27 faces the second ring 26. A second plate 271 is disposed on the inner wall of the third ring 261. The second plate 271 preferably adopts a tongue-shaped spring structure. One end of the second plate 271 is fixed to the inner wall of the third ring 261, and the other end of the second plate 271 extends into the second orifice 27, thereby suspending in the airflow path ejected from the second orifice 27. When the medium is ejected from the second orifice 27, the second plate 271 is impacted by the medium and generates a small bounce. The movement causes a change in the local flow field on one side of the second annulus 26, resulting in slight fluctuations in the negative pressure at the inlet. This continuous fluctuation reduces the adhesion of soft tissue, bloody exudate, and viscous liquid to the inlet. The second orifice 27 is used to separate a small flow of medium. The medium ejected from the second orifice 27 is not used as the main injection medium. The medium ejected from the second orifice 27 is mainly used to drive the second plate 271 to bounce. The free end of the second plate 271 maintains a distance from the second orifice 27. The second plate 271 will not block the second orifice 27 during the bouncing process, which can weaken the continuous adsorption effect at the inlet and thus reduce the blockage at the insertion end.

[0031] like Figure 8As shown, the cover 28 is fixedly connected to the outer side of the end of the second tube 21 inserted under the patient's skin. The cover 28 preferably adopts a cover-shaped structure, and the outer diameter of the cover 28 is slightly larger than the outer diameter of the second tube 21. One end of the cover 28 is a smooth transition surface. The third holes 281 are equidistantly opened on the cover 28. The third holes 281 preferably adopt an elongated oval structure. Subcutaneous gas and irrigation fluid can enter the inner side of the cover 28 through the third holes 281. The groove 29 is opened on the outer wall of one end of the second tube 21. The groove 29 is located within the coverage area of ​​the cover 28. Multiple grooves 29 are equidistantly distributed along the outer surface of the second tube 21. Between the cover 28 and the second tube 21, multiple introduction paths are formed by the third holes 281 and the grooves 29. When local soft tissue adheres to the outer wall of the cover 28, causing the third holes 281 to become blocked, the introduction paths formed by the third holes 281 and the grooves 29 can remain unobstructed.

[0032] like Figure 10 As shown, the drainage component 3 includes a fourth tube 31, which is fixedly connected to the side of the first column 11. The fourth tube 31 preferably adopts a short tube structure. The inner hole of the fourth tube 31 is connected to the drainage channel inside the first column 11. One end of the fourth tube 31 is connected to the negative pressure collection device outside the device. The cylinder 32 is disposed inside the first column 11 and is located between the fourth tube 31 and the third tube 24. The cylinder 32 preferably adopts a short cylindrical structure. A stepped hole is formed inside the cylinder 32. The fourth hole 33 is opened inside the first column 11. One end of the fourth hole 33 is connected to the annular return channel between the second tube 21 and the third tube 24. The other end of the fourth hole 33 is connected to the inside of the cylinder 32. The fifth hole 34 is opened inside the first column 11. One end of the fifth hole 34 is connected to the inner hole of the third tube 24. The other end of the fifth hole 34 is connected to the inside of the cylinder 32.

[0033] like Figure 11As shown, the third column 35 is slidably disposed inside the cylinder 32. The third column 35 preferably adopts a plunger structure. The third elastic element 36 is disposed on one side of the third column 35. The third elastic element 36 preferably adopts a compression spring structure. One end of the third elastic element 36 abuts against the third column 35, and the other end abuts against the inner wall of the cylinder 32. The negative pressure in the annular reflux channel is transmitted to one side of the third column 35 through the fourth hole 33. When the negative pressure is small, the third column 35 maintains its initial position. At this time, the fifth hole 34 is not connected to the annular reflux channel. The suction force at the end of the device inserted under the patient's skin is mainly provided by the external drainage end. When the suction force at the end of the device inserted under the patient's skin increases to a set value, the third column 35 moves backward, and the clearance portion of the third column 35 moves between the fourth hole 33 and the fifth hole 34. The air supply is thus replenished into the annular reflux channel in the second direction, which can reduce the excessive adsorption of tissue at one end. When the third column 35 is in the initial position, the annular clearance part is offset from the fifth hole 34, and the medium in the third tube 24 will not enter the cylinder 32. After the third column 35 moves backward, the annular clearance part corresponds to both the fourth hole 33 and the fifth hole 34. The fifth hole 34 and the fourth hole 33 are thus connected through the annular clearance part, and part of the medium in the third tube 24 enters the annular reflux channel in the second direction, thereby reducing the negative pressure at the insertion end. After the fourth tube 31 is connected to the external negative pressure collection device, the medium flowing back in the annular reflux channel in the second direction can be continuously carried away. The automatic pressure regulating structure formed by the third column 35 and the third elastic element 36 can keep the suction force at the insertion end within a relatively stable range.

[0034] like Figure 10 and Figure 12As shown, the third cavity 37 is located inside the first column 11 and between the drainage channel and the fourth tube 31. The third cavity 37 preferably adopts a conical drainage cavity structure, with its bottom inclined towards the fourth tube 31. A third sheet 38 is located at one end of the third cavity 37, preferably with an umbrella-shaped thin sheet structure. The center of the third sheet 38 is fixed at one end of the third cavity 37, and its outer edge is suspended towards the fourth tube 31. When the device is inserted under the patient's skin, the gas and liquid recovered at the subcutaneous end enter the third cavity 37 along the second direction. The mixing medium pushes the third sheet 38 to open and discharge through the fourth tube 31. When back pressure occurs at the external drainage end, the third sheet 38 adheres to the inner wall of the third cavity 37. This prevents backflow. The inclined surface at the bottom of the third chamber 37 guides the liquid to the fourth tube 31, making it difficult for liquid to remain in the third chamber 37. The third piece 38 is located at the end of the third chamber 37 near the fourth tube 31. The central fixed part of the third piece 38 is located at the center of the valve port of the third chamber 37. The outer edge of the third piece 38 covers the area around the valve port. When the mixed medium flows from the third chamber 37 to the fourth tube 31, the outer edge of the third piece 38 leaves the area around the valve port, and the fourth tube 31 forms a discharge passage. When the pressure at the external drainage end is reversed, the outer edge of the third piece 38 re-adheres to the area around the valve port, thereby preventing the backflow of external gas and liquid to the third chamber 37 and reducing the reverse impact of fluctuations at the collection end on the insertion end.

[0035] In this embodiment, medical personnel insert one end of the second tube 21 into the subcutaneous gas accumulation area of ​​the patient and manually rotate the first set 23 to push the disc 22 and the second elastic element 221 against the surface of the affected area, thus stabilizing the second tube 21. When the external gas source is connected to the first block 12, the second column 13 rotates to the gas supply position. The airflow passes through the first tube 111, the first column 11, and the third tube 24 and enters the first cone 25 along the first direction. After the airflow is ejected from the first hole 251, it forms an induced suction force at the second ring 26. The subcutaneous gas passes through the third hole 281 and the groove 29 and enters the narrow annular gap between the second ring 26 and the first cone 25 along the second direction. The mixed airflow is then introduced into the annular return channel through the third ring 261 and discharged through the fourth hole 33, the third cavity 37, and the fourth tube 31. The localized airflow ejected from the second orifice 27 continuously impacts the second plate 271. The second plate 271 causes the flow field at the insertion end to fluctuate, making it less likely for the insertion suction port to be blocked by soft tissue for a long time. When flushing is required, the second column 13 rotates to the flushing position. The liquid medicine enters the third tube 24 in stages through the first cavity 131, and then is sprayed towards the working area of ​​the insertion end along the first direction from the first orifice 251. After the liquid medicine and the polluted gas are mixed at the insertion end, they are discharged backward along the second direction through the annular return channel. When the negative pressure at the insertion end is too high, the fourth orifice 33 transmits the negative pressure to the cylinder 32, causing the third column 35 to move backward. The fifth orifice 34 replenishes some gas along the second direction, and the suction at the insertion end decreases accordingly. When the gas supply pressure is too high, the second block 16 retracts, and the second cavity 15 opens the pressure relief port, thus limiting the pressure on the gas supply side.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device, characterized in that, include, The supply component (1) includes a first column (11), a second cavity (15) is provided inside the first column (11), and a second block (16) is provided inside the second cavity (15). The cleaning component (2) includes a second tube (21) which is connected to the first column (11). The second tube (21) is provided with a third tube (24). The end of the third tube (24) is connected to a first cone (25). The first cone (25) is provided with a first hole (251). The drainage component (3) includes a fourth hole (33) and a fifth hole (34) disposed on the first column (11). Let the flow direction of the medium in the third tube (24) toward the first cone (25) be the first direction, and let the return direction of the medium along the second tube (21) and the third tube (24) be the second direction. The patient's subcutaneous gas returns along the second direction, the fifth hole (34) replenishes gas in the second direction, and the second block (16) moves to open the second cavity (15).

2. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 1, characterized in that, The supply component (1) further includes a first tube (111) connected to the first column (11), the first tube (111) is connected to a first block (12), a second column (13) is rotatably disposed inside the first block (12), a first cavity (131) is formed between the second column (13) and the first block (12), and when the second column (13) rotates, the first cavity (131) is connected to different medium inlets.

3. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 2, characterized in that, The first block (12) is provided with a first piece (14), which is located at the entrance of the first cavity (131). When the medium flows to the first cavity (131), the first piece (14) opens, and when the medium flows in the opposite direction, the first piece (14) blocks the entrance.

4. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 1, characterized in that, The supply component (1) further includes a first elastic element (17) disposed in the second cavity (15), the first elastic element (17) abuts against the second block (16), and the second block (16) moves against the elastic force of the first elastic element (17) when pushed by the medium pressure.

5. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 1, characterized in that, The cleaning component (2) further includes a first ring (211) disposed outside the second tube (21), a disc (22) sliding outside the second tube (21), the disc (22) being connected to a second elastic element (221), the first column (11) being connected to a first sleeve (23), the first sleeve (23) abutting against the disc (22), and the first sleeve (23) pushing the disc (22) to move along the second tube (21) when it moves.

6. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 1, characterized in that, The third tube (24) is coaxially arranged with the second tube (21), and a reflux channel is formed between the outer wall of the third tube (24) and the inner wall of the second tube (21). The first hole (251) is distributed circumferentially along the first cone (25) and is inclined toward the inner wall of the second tube (21).

7. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 6, characterized in that, The cleaning component (2) further includes a second ring (26) and a third ring (261) disposed within the second tube (21). The second ring (26) is located on the outer periphery of the first cone (25), and an annular gap is formed between the second ring (26) and the first cone (25). The third ring (261) is connected between the second ring (26) and the second tube (21).

8. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 7, characterized in that, The first cone (25) is also provided with a second hole (27), and the cleaning component (2) also includes a second piece (271) provided in the third ring (261). The second piece (271) is located in the outflow path of the second hole (27), and the second piece (271) is driven to bounce when the medium flows out through the second hole (27).

9. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 1, characterized in that, The cleaning component (2) further includes a cover (28) connected to the outside of the insertion end of the second tube (21). The cover (28) is provided with a third hole (281). The outer wall of the second tube (21) is provided with a groove (29) located within the coverage area of ​​the cover (28). The third hole (281) and the groove (29) together form an inlet path leading to the insertion end.

10. The dual-chamber counter-current subcutaneous emphysema clearance and drainage combination device according to claim 1, characterized in that, The drainage assembly (3) also includes a fourth tube (31), a cylinder (32) is provided inside the first column (11), a third column (35) is slidably provided inside the cylinder (32), a third elastic element (36) is provided on one side of the third column (35), the cylinder (32) is connected to a fourth hole (33) and a fifth hole (34), the third column (35) can move under negative pressure, a third cavity (37) is provided between the fourth hole (33) and the fourth tube (31), a third piece (38) is provided inside the third cavity (37), the third piece (38) opens when the medium flows in the second direction, and blocks the third cavity (37) when the medium flows in the reverse direction.

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