A closed chest drainage device

Abstract

The present invention belongs to the technical field of medical devices, and specifically is a closed chest drainage device, including a drainage bottle, a drainage tube and a sealing cover are fixedly installed inside the first tube mouth cover, the end of the drainage tube is connected to an anti-backflow device, the first installation block and the second installation block are used to fasten the chest connecting tube and the drainage tube; a second installation block is fixedly installed on the inner wall of the reflux connecting tube close to one side of the drainage tube; a first spring is fixedly installed on the inner wall protrusion of the middle part of the reflux connecting tube, and the end of the first spring is fixedly installed with an anti-backflow block; the present invention uses the first spring inside the anti-backflow device to lift the anti-backflow block and drive the sealing block to fit with the sealing groove. When replacing the drainage tube, the two ends of the reflux connecting tube are disconnected to reduce the contact between air and the inside of the reflux connecting tube to prevent infection.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, in particular to a closed chest drainage device. Background Art

[0002] Closed chest drainage is to place one end of the drainage tube into the chest cavity and connect the other end to a water seal bottle at a lower position to discharge gas or collect fluid in the chest cavity, so that the lung tissue can reopen and restore function, thereby achieving the purpose of treatment.

[0003] A patent application with publication number CN215652887U discloses a closed chest drainage device, including a drainage bottle, a closed cap is threadedly connected to the outer surface of the drainage bottle, a guide tube is fixedly connected to the inner wall of the closed cap, and an adjusting cylinder and an adjusting rod are provided. When the negative pressure in the drainage bottle needs to be adjusted, the negative pressure in the drainage bottle can be adjusted to make the drainage smooth by pulling the adjusting rod. At the same time, the disadvantage of the traditional method of opening the closed cap easily causing many pathogens in the drainage bottle to contaminate the drainage fluid is solved, thereby reducing the infection rate of patients.

[0004] It can be seen that although the above-mentioned device can be used multiple times, when blood clots appear in the chest cavity and small pieces of organs flow into the drainage bottle through the pipe, the small pieces of organs and blood clots may adhere to the inner wall of the drainage bottle. If it is continuously flushed with saline, the inner wall of the drainage bottle is in contact with the outside air and many pathogens may be produced. If the drainage bottle is replaced directly, it is necessary to clamp the chest connection tube with pliers to prevent the chest connection tube from contacting the air when replacing it. The method of clamping with pliers cannot determine whether it is sealed, and it is easy to damage the tube, thereby causing the chest connection tube to rupture, which is more troublesome.

[0005] To this end, the present invention provides a closed chest drainage device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a closed chest drainage device described in the present invention comprises a drainage bottle, a sealing cover is fixedly installed on the top of the drainage bottle, a first pipe mouth cover and a second pipe mouth cover are arranged on the top of the sealing cover, a drainage tube and a sealing cover are fixedly installed inside the first pipe mouth cover, a second outlet and a third outlet are fixedly installed inside the second pipe mouth cover, an end of the drainage tube is connected with an anti-backflow device, an end of the anti-backflow device is connected with a chest cavity connecting tube, an end of the chest cavity connecting tube is installed with a pneumothorax needle, the anti-backflow device is used to disassemble and install the drainage tube, and the anti-backflow device comprises: a reflux connecting tube plugged into the chest cavity connecting tube and the end of the drainage tube; a reflux connecting tube fixedly installed on the inner wall of the end of the reflux connecting tube A first mounting block and a second mounting block, the first mounting block and the second mounting block are used to fasten the chest cavity connecting tube and the drainage tube; a second mounting block fixedly mounted on the inner wall of the reflux connecting tube near the drainage tube side; a first spring fixedly mounted on the inner wall protrusion of the middle part of the reflux connecting tube, and an anti-backflow block is fixedly mounted on the end of the first spring; a limit block fixedly mounted on the inner wall of the anti-backflow block, and a sliding column is fixedly mounted on the side wall of the limit block; a sealing block movably mounted on the outer wall of the sliding column; two sliding protrusions fixedly mounted on the inner wall of the reflux connecting tube, and sealing fixing blocks are fixedly mounted on the ends of the two sliding protrusions, and the anti-backflow block slides on the inner wall of the reflux connecting tube and the outer wall of the sealing fixing block; a sealing groove fixedly mounted on the inner wall of the sealing fixing block.

[0008] Preferably, a height detection tube is fixedly mounted on the inner wall of the chest cavity connecting tube, an air magnetic ball is arranged inside the height detection tube, and a detection bump is fixedly mounted on the end of the outer wall of the reflux connecting tube.

[0009] Preferably, the backflow prevention device also includes: a blade fixing block fixedly mounted on the inner wall of the backflow connecting pipe; a blade fixing column rollingly mounted inside the blade fixing block; and a blade knife fixedly mounted at the end of the blade fixing column.

[0010] Preferably, the drainage tube at the bottom end of the first pipe mouth cover is fixedly installed with a drainage low tube, the bottom end of the drainage low tube is fixedly installed with a drainage closing tube, the middle part of the drainage closing tube is fixedly installed with a rotating plate connecting block, the end of the rotating plate connecting block is rollingly installed with an anti-tilt rotating plate, and a rotating plate hole is arranged inside the anti-tilt rotating plate.

[0011] Preferably, an extrusion block is fixedly installed on the side wall of the drainage bottle, a first fixed block is fixedly installed on the top of the extrusion block, a second sliding block is slidably installed inside the top of the extrusion block, a reciprocating threaded rod is installed on the internal threads of the first fixed block and the second sliding block, and a motor is fixedly installed on the end of the reciprocating threaded rod.

[0012] Preferably, the backflow prevention device also includes: an electromagnetic fixing block fixedly mounted on the inner wall of the sealing fixing block; an electromagnet fixedly mounted inside the electromagnetic fixing block; a sealing block slidably mounted on the outer wall of the sliding column, a limiting protrusion fixedly mounted on the side wall of the sealing block, a second spring fixedly mounted on the inner wall of the sealing block, and an end of the second spring fixedly mounted on the outer wall of the sliding column.

[0013] Preferably, the inner diameter of the anti-backflow block is larger than the outer diameter of the sealing block, and the length of the sliding column is larger than the distance between the sealing block and the sealing groove.

[0014] Preferably, the height of the drainage low tube is higher than the inner wall of the bottom end of the drainage bottle, and the diameter of the anti-tilt rotating plate is larger than the diameter of the drainage closed tube.

[0015] Preferably, the diameter of the blade blade is smaller than the diameter of the first mounting block, and the first mounting block is concentric with the blade blade.

[0016] Preferably, the limiting protrusion is concentric with the sliding column and the electromagnet, and the outer diameter of the sealing block is the same as the inner diameter of the sealing groove.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A closed chest drainage device described in the present invention uses a first spring inside the anti-backflow device to lift up the anti-backflow block to drive the sealing block to fit with the sealing groove. When replacing the drainage tube, the two ends of the reflux connecting tube are disconnected to reduce the internal contact between air and the reflux connecting tube to prevent infection. The rotating plate hole is driven by gravity to move to the bottom to connect the drainage tube with the inside of the drainage bottle. When the drainage bottle tilts, the anti-tilt rotating plate rotates, thereby closing the connection between the drainage tube and the inside of the drainage bottle to prevent infection caused by the tilt of the drainage bottle.

[0019] 2. The closed chest drainage device described in the present invention detects the presence of the air magnetic ball through the detection protrusion inside the anti-backflow device, thereby detecting the height of the two ends of the chest connecting tube. If the height of the pneumothorax needle is lower than the height of the reflux connecting tube, the electromagnet can be started to close the channels at both ends of the reflux connecting tube to prevent the reflux of pleural effusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is the overall appearance diagram of the present invention;

[0022] Figure 2 is a cross-sectional view of the drainage bottle of the present invention;

[0023] Figure 3 is a side sectional view of the drainage bottle of the present invention;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0025] Figure 5 It is the internal structure diagram of the backflow prevention device of the present invention;

[0026] Figure 6 It is a side structural diagram of the backflow prevention device of the present invention;

[0027] Figure 7 is an internal cross-sectional view of the backflow prevention device of the present invention;

[0028] In the figure:

[0029] 1. Drainage bottle; 11. Sealing cover; 12. First tube opening cover; 13. First outlet; 14. Second tube opening cover; 15. Second outlet; 16. Third outlet; 17. Drainage tube; 171. Drainage low tube; 172. Drainage closed tube; 173. Anti-tilt rotating plate; 174. Rotating plate connecting block; 175. Rotating plate hole; 18. Chest connecting tube; 181. Connecting tube protrusion; 182. Height detection tube; 1821. Air magnetic ball; 19. Pneumothorax needle;

[0030] 2. Extrusion block; 21. First fixed block; 22. Second sliding block; 23. Reciprocating threaded rod; 24. Syringe extrusion rod; 25. Syringe liquid tube; 26. Motor;

[0031] 3. Anti-backflow device; 31. Backflow connecting pipe; 32. Detection protrusion; 33. First installation block; 332. Blade fixing column; 333. Blade knife; 334. Blade fixing block; 34. First spring; 35. Anti-backflow block; 351. Second installation block; 352. Sealing fixing block; 3521. Sliding protrusion; 353. Electromagnet; 354. Sealing block; 355. Electromagnetic fixing block; 356. Sealing groove; 357. Limiting protrusion; 358. Sliding column; 359. Second spring; 36. Limiting block. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figure 1-6As shown, a chest closed drainage device described in an embodiment of the present invention includes a drainage bottle 1, a sealing cover 11 is fixedly installed on the top of the drainage bottle 1, a first pipe mouth cover 12 and a second pipe mouth cover 14 are arranged on the top of the sealing cover 11, a drainage tube 17 and the sealing cover 11 are fixedly installed inside the first pipe mouth cover 12, a second outlet 15 and a third outlet 16 are fixedly installed inside the second pipe mouth cover 14, an end of the drainage tube 17 is connected with an anti-backflow device 3, an end of the anti-backflow device 3 is connected with a chest connecting tube 18, an end of the chest connecting tube 18 is installed with a pneumothorax needle 19, the anti-backflow device 3 is used to disassemble and install the drainage tube 17, and the anti-backflow device 3 includes: a reflux connecting tube 31 plugged into the ends of the chest connecting tube 18 and the drainage tube 17; a first installation block 33 and a second installation block 351 fixedly installed on the inner wall of the end of the reflux connecting tube 31, The first mounting block 33 and the second mounting block 351 are used to fasten the chest cavity connecting tube 18 and the drainage tube 17; the second mounting block 351 is fixedly mounted on the inner wall of the reflux connecting tube 31 near the drainage tube 17; the first spring 34 is fixedly mounted on the inner wall protrusion in the middle part of the reflux connecting tube 31, and the end of the first spring 34 is fixedly mounted with an anti-backflow block 35; the limit block 36 is fixedly mounted on the inner wall of the anti-backflow block 35, and the side wall of the limit block 36 is fixedly mounted with a sliding column 358; the sealing block 354 is movably mounted on the outer wall of the sliding column 358; the two sliding protrusions 3521 are fixedly mounted on the inner wall of the reflux connecting tube 31, and the ends of the two sliding protrusions 3521 are fixedly mounted with sealing fixing blocks 352, and the anti-backflow block 35 slides on the inner wall of the reflux connecting tube 31 and the outer wall of the sealing fixing block 352; the sealing groove 356 is fixedly mounted on the inner wall of the sealing fixing block 352.

[0034] Specifically, closed thoracic drainage is used to drain a large amount of effusion or gas in the thoracic cavity to the outside of the body through a drainage device, so as to achieve a therapeutic effect. When using the drainage device for drainage, a pneumothorax needle 19 is inserted into the patient's chest cavity, and the pleural effusion is drained into the drainage bottle 1 through the pneumothorax needle 19 connected to the drainage tube 17. The drainage bottle 1 and the drainage tube 17 and the chest connecting tube 18 need to be kept in a sterile environment. Therefore, during treatment, the contact between the inside of the drainage bottle 1 and the drainage tube 17 and the outside air should be reduced to prevent infection. Due to different causes of disease, the patient may have small organ ruptures. During the drainage process, small pieces of organs will enter the drainage bottle 1 through the pneumothorax needle 19 and the drainage tube 17. At this time, the drainage bottle 1 needs to be replaced. When replacing the existing drainage bottle 1, the drainage tube 17 is directly clamped with surgical forceps, and the drainage bottle 1 is replaced by disassembling the connection between the drainage tube 17 and the chest connection tube 18. In the process of replacing the drainage bottle 1, the drainage tube 17 may not be completely sealed, increasing the risk of infection. The material of the drainage tube 17 is rubber. In order to maintain the seal during operation, the nurse will clamp it tightly, which may cause the drainage tube 17 to be damaged. For this purpose, the following improvements have been made:

[0035] Pour physiological saline from the third outlet 16 into the interior of the drainage bottle 1 to isolate it from the outside air until the physiological saline in the drainage bottle 1 submerges the bottom end of the drainage tube 17, and tighten the third outlet 16 with the cap. At this time, the reflux connecting tube 31 and the drainage tube 17 are in a disconnected state, while the reflux connecting tube 31 and the chest connecting tube 18 are in a connected state. When the reflux connecting tube 31 and the drainage tube 17 are not connected, the two ends of the reflux connecting tube 31 are closed, and the first spring 34 inside the reflux connecting tube 31 lifts up the anti-reflux block 35. , thereby driving the limiting block 36 and the sealing block 354 to move toward the sealing fixing block 352, and the sliding protrusion 3521 on the outer wall of the sealing fixing block 352 limits the sealing fixing block 352, so that the sealing block 354 fits with the sealing groove 356 inside the sealing fixing block 352, and the sealing block 354 is in a completely closed state, and the sealing fixing block 352 is also in a completely closed state due to the fitting of the sealing block 354, and the fitting of the sealing block 354 and the sealing groove 356 realizes the sealing of the left and right ends of the reflux connecting pipe 31;

[0036] After the pneumothorax needle 19 is inserted into the chest cavity, the anti-backflow device 3 is connected to the drainage tube 17, and one end of the drainage tube 17 is aligned with the second installation block 351 and inserted into the inner wall of the reflux connecting tube 31. When the drainage tube 17 is continuously inserted, the drainage tube 17 will push up the anti-backflow block 35 and move toward one end of the chest connecting tube 18 until the drainage tube 17 pushes up the anti-backflow block 35 and moves to the direction of the chest connecting tube 18 to the maximum stroke, and the sealing block 354 is separated from the sealing groove 356, and the outer wall radius of the sealing block 354 is less than The inner diameter of the anti-reflux block 35 and the sealing groove 356 are open at both ends. Then, the pleural effusion enters the interior of the anti-reflux block 35 from the left end of the anti-reflux block 35, flows through the outer wall of the sealing block 354 through the limit block 36, and then flows through the inner wall of the sealing groove 356, and then enters the interior of the drainage tube 17. The two ends of the reflux connecting tube 31 are connected. At this time, the drainage tube 17 is fixed by the friction force and the extrusion of the end, and then it is fixed for the second time with tape, so that the end of the drainage tube 17 continues to lift the anti-reflux block 35. Figure 3-7 As shown, the drainage work can be completed. When the drainage tube 17 and the drainage bottle 1 need to be replaced, the tape fixing the drainage tube 17 is removed, and the drainage tube 17 is pulled backward while rotating, thereby reducing the friction between the drainage tube 17 and the outer wall of the anti-backflow block 35, and then the drainage tube 17 is pulled out. After being pulled out, the first spring 34 will lift the anti-backflow block 35 as described above, and the anti-backflow block 35 drives the sealing block 354 to fit with the sealing groove 356, thereby sealing both ends of the reflux connecting tube 31 and reducing the possibility of damage to the drainage tube 17. The cooperation of the sealing block 354 and the sealing groove 356 can achieve that the pneumothorax needle 19 is in a completely sealed state when replaced.

[0037] like Figure 3 and Figure 6 As shown, a height detection tube 182 is fixedly installed on the inner wall of the chest cavity connecting tube 18 , an air magnetic ball 1821 is arranged inside the height detection tube 182 , and a detection protrusion 32 is fixedly installed on the outer wall end of the return connection tube 31 .

[0038] Specifically, since the air pressure in the chest cavity is relatively equal to the air pressure outside, in order to allow the effusion in the chest cavity to flow out smoothly without backflow, it is necessary to make the end of the connecting tube protrusion 181 connected to the backflow connecting tube 31 lower than the end of the chest cavity connecting tube 18 connected to the pneumothorax needle 19. Therefore, a height detection tube 182 is provided on the inner wall of the chest cavity connecting tube 18, and water and air magnetic balls 1821 are placed inside the height detection tube 182. The air magnetic ball 1821 is hollow in the middle and floats upward under the buoyancy of water. A detection protrusion 32 is provided at the outer wall end where the first mounting block 33 is connected to the chest cavity connecting tube 18. The detection protrusion 32 sends a signal for detecting the air magnetic ball 1821. When the detection protrusion 32 detects that the air magnetic ball 1821 is on the inner wall of the reflux connecting tube 31, a warning sound can be issued. By detecting the position relationship of the air magnetic ball 1821 inside the height detection tube 182, according to the height conditions of the two ends of the chest cavity connecting tube 18, the patient is reminded to pay attention to the height of the drainage tube 17 to prevent reflux and reduce the possibility of infection.

[0039] like Figure 3-6 As shown, the anti-backflow device 3 also includes: a blade fixing block 334 fixedly mounted on the inner wall of the backflow connecting pipe 31; a blade fixing column 332 rollingly mounted inside the blade fixing block 334; and a blade knife 333 fixedly mounted at the end of the blade fixing column 332.

[0040] Specifically, considering that small organ fragments appear in the patient's chest cavity due to illness, when chest drainage is performed, before the organs pass through the chest connecting tube 18 and enter the return connecting tube 31, the organ fragments will block the inside of the return connecting tube 31. Therefore, a fan blade knife 333 is provided inside the return connecting tube 31. The fan blade knife 333 rotates according to the flow of fluid in the chest cavity, thereby cutting the organ fragments when they pass through the inside of the return connecting tube 31, crushing the organ fragments, and preventing the organ fragments from blocking the inside of the return connecting tube 31.

[0041] like Figure 1-4 As shown, the drainage tube 17 at the bottom end of the first pipe mouth cover 12 is fixedly installed with a drainage low tube 171, and the bottom end of the drainage low tube 171 is fixedly installed with a drainage closed tube 172, and the middle part of the drainage closed tube 172 is fixedly installed with a rotating plate connecting block 174, and the end of the rotating plate connecting block 174 is rollingly installed with an anti-tilt rotating plate 173, and the interior of the anti-tilt rotating plate 173 is provided with a rotating plate hole 175.

[0042] Specifically, in the process of using the drainage bottle 1, in order to prevent backflow and air from entering and causing pollution, the drainage bottle 1 should be prevented from tipping over when in use, and a gravity protrusion is set at the bottom end of the rotating plate hole 175. When the drainage bottle 1 is placed normally, the anti-tilting rotating plate 173 is driven by the gravity protrusion at the bottom end to drive the rotating plate hole 175 to always remain at the bottom position, and the drainage closing tube 172 is only opened at the bottom end. Therefore, when the drainage bottle 1 is placed normally on the ground, the liquid inside the drainage tube 17 The liquid flows out from the rotating plate hole 175 through the bottom end of the drainage closing tube 172. If the drainage bottle 1 is tilted, the raised block at the bottom end of the anti-tilting rotating plate 173 will rotate due to gravity, thereby driving the rotating plate hole 175 to rotate. When the rotating plate hole 175 rotates to the blocking position of the drainage closing tube 172, the interior of the drainage tube 17 is isolated from the interior of the drainage bottle 1, and the drainage tube 17 is in a sealed state, thereby preventing the air inside the drainage bottle 1 from entering the drainage tube 17 and causing pollution when the drainage bottle 1 is tilted.

[0043] like Figure 2 As shown, an extrusion block 2 is fixedly installed on the side wall of the drainage bottle 1, a first fixed block 21 is fixedly installed on the top of the extrusion block 2, a second sliding block 22 is slidably installed inside the top of the extrusion block 2, a reciprocating threaded rod 23 is installed on the internal threads of the first fixed block 21 and the second sliding block 22, and a motor 26 is fixedly installed on the end of the reciprocating threaded rod 23.

[0044] Specifically, the syringe squeezing rod 24 and the syringe liquid tube 25 are medical injection instruments. The syringe squeezing rod 24 is placed on the top of the first fixed block 21, and the syringe liquid tube 25 is placed on the top of the second sliding block 22. If it is necessary to flush the chest cavity with normal saline, the connecting tube is installed at the end of the syringe liquid tube 25, and the other end is installed at the top of the second outlet 15, and the second outlet 15 and the first outlet 13 are connected. Then, the first outlet 13 is connected to the pneumothorax needle 19, and normal saline and anesthesia can be injected into the chest cavity. During injection, the motor 26 is turned on, and the motor 26 drives the second sliding block 22 to move toward the first fixed block 21, thereby squeezing the syringe liquid tube 25 and pushing out the internal liquid of the syringe liquid tube 25. The motor 26 can push the medicine inside the syringe liquid tube 25 at a uniform speed, reducing the patient's discomfort when injecting the drug.

[0045] like Figure 1 and Figure 7 As shown, the backflow prevention device 3 further includes: an electromagnetic fixing block 355 fixedly mounted on the inner wall of the sealing fixing block 352; an electromagnet 353 fixedly mounted inside the electromagnetic fixing block 355;

[0046] A sealing block 354 is slidably mounted on the outer wall of the sliding column 358 , a limiting protrusion 357 is fixedly mounted on the side wall of the sealing block 354 , a second spring 359 is fixedly mounted on the inner wall of the sealing block 354 , and an end of the second spring 359 is fixedly mounted on the outer wall of the sliding column 358 .

[0047] Specifically, considering that the first mounting block 33 and the rotating plate hole 175 can start the electromagnet 353 when detecting that the inclination and the pneumothorax needle 19 are in a low position, the electromagnet 353 can generate suction on the limiting protrusion 357 after being energized, thereby pulling the sealing block 354 toward the limiting protrusion 357, so that the sealing block 354 fits the sealing groove 356, thereby achieving the closure of the two ends of the return connecting tube 31, so that the chest connecting tube 18 is disconnected from the outside world, when the first mounting block 33 and the rotating plate hole 175 do not detect that the inclination and the pneumothorax needle 19 are in a low position, the electromagnet 353 is disconnected, and the sealing block 354, under the action of the second spring 359, moves the sealing block 354 in a direction away from the drainage tube 17, thereby achieving the connection between the two ends of the return connecting tube 31.

[0048] like Figure 7 As shown, the inner diameter of the anti-backflow block 35 is greater than the outer diameter of the sealing block 354 , and the length of the sliding column 358 is greater than the distance between the sealing block 354 and the sealing groove 356 .

[0049] Specifically, the inner diameter of the anti-reflux block 35 is larger than the outer diameter of the sealing block 354. After the sealing block 354 is separated from the sealing groove 356, the liquid inside the reflux connecting tube 31 near the end of the chest connecting tube 18 can pass through the sealing block 354 and flow toward the direction near the end of the drainage tube 17. The length of the sliding column 358 is larger than the distance between the sealing block 354 and the sealing groove 356, so that when the sealing block 354 moves toward the sealing groove 356 along the sliding column 358, it can fit with the sealing groove 356.

[0050] like Figure 7 As shown, the height of the drainage lower tube 171 is higher than the inner wall of the bottom end of the drainage bottle 1 , and the diameter of the anti-tilt rotating plate 173 is larger than the diameter of the drainage closed tube 172 .

[0051] Specifically, the height of the drainage lower tube 171 is higher than the inner wall of the bottom end of the drainage bottle 1 to prevent the viscous matter flowing out of the pleural effusion from clogging the rotating plate hole 175, and the diameter of the anti-tilt rotating plate 173 is larger than the diameter of the drainage closed tube 172, so that the drainage closed tube 172 can be completely sealed when the anti-tilt rotating plate 173 deviates from the rotation.

[0052] like Figure 7 As shown, the diameter of the blade blade 333 is smaller than the diameter of the first mounting block 33 , and the first mounting block 33 is concentric with the blade blade 333 .

[0053] Specifically, the diameter of the blade blade 333 is smaller than the diameter of the first mounting block 33, so that the blade blade 333 will not touch the first mounting block 33 during operation, and the first mounting block 33 is concentric with the blade blade 333, which can ensure that the liquid inside the first mounting block 33 flows to the blade blade 333.

[0054] like Figure 7 As shown, the limiting protrusion 357 is concentric with the sliding column 358 and the electromagnet 353 , and the outer diameter of the sealing block 354 is the same as the inner diameter of the sealing groove 356 .

[0055] Specifically, the limiting protrusion 357, the sliding column 358 and the electromagnet 353 are concentric, and when the sealing block 354 moves toward the electromagnet 353, the limiting protrusion 357 can be adsorbed on the electromagnet 353, and the inner diameter of the sealing groove 356 is the same as the outer diameter of the sealing block 354, so that the sealing block 354 and the sealing groove 356 can be completely fitted.

[0056] Working principle: Pour physiological saline into the drainage bottle 1 from the third outlet 16 until the physiological saline in the drainage bottle 1 submerges the bottom end of the drainage tube 17, and tighten the third outlet 16 with a cap. At this time, the reflux connecting tube 31 and the drainage tube 17 are in a disconnected state, while the reflux connecting tube 31 and the chest connecting tube 18 are in a connected state. When the reflux connecting tube 31 and the drainage tube 17 are not connected, the two ends of the reflux connecting tube 31 are in a closed state, and the first spring 34 inside the reflux connecting tube 31 lifts up the anti-reflux block 35. , thereby driving the limiting block 36 and the sealing block 354 to move toward the sealing fixing block 352, and the sliding protrusion 3521 on the outer wall of the sealing fixing block 352 limits the sealing fixing block 352, so that the sealing block 354 fits with the sealing groove 356 inside the sealing fixing block 352, and the sealing block 354 is in a completely closed state, and the sealing fixing block 352 is also in a completely closed state due to the fitting of the sealing block 354, and the fitting of the sealing block 354 and the sealing groove 356 realizes the sealing of the left and right ends of the reflux connecting pipe 31;

[0057] After the pneumothorax needle 19 is surgically inserted into the chest cavity, the anti-backflow device 3 is connected to the drainage tube 17, and one end of the drainage tube 17 is aligned with the second installation block 351 and inserted into the inner wall of the reflux connecting tube 31. When the drainage tube 17 is continuously inserted, the drainage tube 17 will push up the anti-backflow block 35 and move toward one end of the chest connecting tube 18 until the drainage tube 17 pushes up the anti-backflow block 35 and moves toward the direction of the chest connecting tube 18 to the maximum stroke, and the sealing block 354 is separated from the sealing groove 356, and the outer wall radius of the sealing block 354 is smaller than the radius of the anti-backflow block 351. The inner diameter of the block 35 is 1.5 mm, and the sealing groove 356 is open at both ends. The pleural effusion enters the interior of the anti-reflux block 35 from the left end of the anti-reflux block 35, flows through the outer wall of the sealing block 354 through the limit block 36, and then flows through the inner wall of the sealing groove 356, and then enters the interior of the drainage tube 17, so that the two ends of the reflux connecting tube 31 are in a connected state. At this time, the drainage tube 17 is fixed by the friction force and the extrusion of the end, and then fixed again with tape, so that the end of the drainage tube 17 continues to push up the anti-reflux block 35, as shown in FIG. Figure 6-7 As shown, the drainage work can be completed. When the drainage tube 17 and the drainage bottle 1 need to be replaced, the tape fixing the drainage tube 17 is removed, and the drainage tube 17 is pulled backward when rotating, thereby reducing the friction between the drainage tube 17 and the outer wall of the anti-backflow block 35, and then the drainage tube 17 is pulled out. After being pulled out, the first spring 34 will lift the anti-backflow block 35 as described above, and the anti-backflow block 35 drives the sealing block 354 to fit with the sealing groove 356, so as to achieve sealing of both ends of the reflux connecting tube 31, reduce the possibility of damage to the drainage tube 17, and the cooperation of the sealing block 354 and the sealing groove 356 can achieve that the pneumothorax needle 19 is in a completely sealed state when replaced;

[0058] Since the air pressure in the chest cavity is relatively equal to the air pressure outside, in order to make the effusion in the chest cavity flow out smoothly without backflow, it is necessary to make the end of the connecting tube protrusion 181 connected to the backflow connecting tube 31 lower than the end of the chest cavity connecting tube 18 connected to the pneumothorax needle 19. Therefore, a height detection tube 182 is arranged on the inner wall of the chest cavity connecting tube 18, and water and air magnetic balls 1821 are placed inside the height detection tube 182. The air magnetic ball 1821 is hollow in the middle and floats upward under the buoyancy of water. The outer wall end where the first mounting block 33 is connected to the chest cavity connecting tube 18 is provided with a detection protrusion 32. The detection protrusion 32 The signal is used to detect the air magnetic ball 1821. When the detection protrusion 32 detects that the air magnetic ball 1821 is on the inner wall of the return connection tube 31, a warning sound can be issued. By detecting the position relationship of the air magnetic ball 1821 inside the height detection tube 182, according to the height conditions of the two ends of the chest connection tube 18, the patient is reminded to pay attention to the height of the drainage tube 17 to prevent reflux and reduce the possibility of infection. The blade blade 333 is driven to rotate according to the flow of liquid in the chest cavity, so that the organ fragments are cut when passing through the inside of the return connection tube 31, and the organ fragments are crushed to prevent the organ fragments from blocking the inside of the return connection tube 31;

[0059] When the drainage bottle 1 is placed normally, the anti-tilt rotating plate 173 is driven by the gravity protrusion at the bottom to keep the rotating plate hole 175 at the bottom position, and the drainage closed tube 172 is only provided with an opening at the bottom. Therefore, when the drainage bottle 1 is placed normally on the ground, the liquid in the drainage tube 17 flows out from the rotating plate hole 175 through the bottom end of the drainage closed tube 172. If the drainage bottle 1 is tilted, the protrusion at the bottom end of the anti-tilt rotating plate 173 will rotate due to gravity, thereby driving the rotating plate hole 175 to rotate. When the rotating plate hole 175 rotates to the position blocked by the drainage closed tube 172, the interior of the drainage tube 17 is isolated from the interior of the drainage bottle 1, and the drainage tube 17 is in a sealed state, thereby preventing the air inside the drainage bottle 1 from entering the drainage tube 17 and causing pollution when the drainage bottle 1 is tilted.

[0060] The syringe squeezing rod 24 and the syringe liquid tube 25 are medical injection instruments. The syringe squeezing rod 24 is placed on the top of the first fixed block 21, and the syringe liquid tube 25 is placed on the top of the second sliding block 22. If it is necessary to flush the chest cavity with normal saline, the connecting tube is installed at the end of the syringe liquid tube 25, and the other end is installed at the top of the second outlet 15, and the second outlet 15 and the first outlet 13 are connected. Then the first outlet 13 is connected to the pneumothorax needle 19, and normal saline and anesthesia can be injected into the chest cavity. During injection, the motor 26 is turned on, and the motor 26 drives the second sliding block 22 to move toward the first fixed block 21, thereby squeezing the syringe liquid tube 25 and pushing out the internal liquid of the syringe liquid tube 25. The motor 26 can push the medicine inside the syringe liquid tube 25 at a uniform speed, reducing the patient's discomfort when injecting the drug.

[0061] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A closed chest drainage device, comprising a drainage bottle (1), characterized in that: The top of the drainage bottle (1) is fixedly mounted with a sealing cover (11), the top of the sealing cover (11) is provided with a first tube opening cover (12) and a second tube opening cover (14), the interior of the first tube opening cover (12) is fixedly mounted with a drainage tube (17) and the sealing cover (11), the interior of the second tube opening cover (14) is fixedly mounted with a second outlet (15) and a third outlet (16), the end of the drainage tube (17) is connected with a backflow prevention device (3), the end of the backflow prevention device (3) is connected with a chest cavity connecting tube (18), the end of the chest cavity connecting tube (18) is mounted with a pneumothorax needle (19), the backflow prevention device (3) is used for disassembling and mounting the drainage tube (17), and the backflow prevention device (3) comprises: A return connection tube (31) plugged into the ends of the chest connection tube (18) and the drainage tube (17); A first mounting block (33) and a second mounting block (351) fixedly mounted on the inner wall of the end of the return connection tube (31), wherein the first mounting block (33) and the second mounting block (351) are used to fasten the chest connection tube (18) and the drainage tube (17); A second mounting block (351) fixedly mounted on the inner wall of the return connection pipe (31) close to the drainage pipe (17); A first spring (34) fixedly mounted on a protruding inner wall of a middle portion of the reflux connecting pipe (31), wherein an anti-reflux block (35) is fixedly mounted on an end of the first spring (34); A limit block (36) fixedly mounted on the inner wall of the anti-backflow block (35), wherein a sliding column (358) is fixedly mounted on the side wall of the limit block (36); A sealing block (354) movably mounted on the outer wall of the sliding column (358); Two sliding protrusions (3521) are fixedly mounted on the inner wall of the return connection pipe (31), and sealing fixing blocks (352) are fixedly mounted on the ends of the two sliding protrusions (3521). The anti-backflow block (35) slides on the inner wall of the return connection pipe (31) and the outer wall of the sealing fixing block (352); A sealing groove (356) fixedly mounted on the inner wall of the sealing fixing block (352); An electromagnetic fixing block (355) fixedly mounted on the inner wall of the sealing fixing block (352); An electromagnet (353) fixedly mounted inside an electromagnetic fixing block (355); A sealing block (354) is slidably mounted on the outer wall of the sliding column (358), a limiting protrusion (357) is fixedly mounted on the side wall of the sealing block (354), a second spring (359) is fixedly mounted on the inner wall of the sealing block (354), and an end of the second spring (359) is fixedly mounted on the outer wall of the sliding column (358).

2. A closed chest drainage device according to claim 1, characterized in that: A height detection tube (182) is fixedly mounted on the inner wall of the chest cavity connection tube (18), an air magnetic ball (1821) is arranged inside the height detection tube (182), and a detection protrusion (32) is fixedly mounted on the end of the outer wall of the return flow connection tube (31).

3. A closed chest drainage device according to claim 2, characterized in that: The backflow prevention device (3) further comprises: A fan blade fixing block (334) fixedly mounted on the inner wall of the return connection pipe (31); A fan blade fixing column (332) rollingly mounted inside the fan blade fixing block (334); A fan blade knife (333) is fixedly mounted on the end of the fan blade fixing column (332).

4. A closed chest drainage device according to claim 3, characterized in that: A drainage lower tube (171) is fixedly mounted on the drainage tube (17) at the bottom end of the first tube opening cover (12); a drainage closing tube (172) is fixedly mounted on the bottom end of the drainage lower tube (171); a rotating plate connecting block (174) is fixedly mounted in the middle of the drainage closing tube (172); an anti-tilting rotating plate (173) is rollingly mounted on the end of the rotating plate connecting block (174); a rotating plate hole (175) is provided inside the anti-tilting rotating plate (173).

5. A closed chest drainage device according to claim 4, characterized in that: An extrusion block (2) is fixedly mounted on the side wall of the drainage bottle (1); a first fixed block (21) is fixedly mounted on the top of the extrusion block (2); a second sliding block (22) is slidably mounted inside the top of the extrusion block (2); a reciprocating threaded rod (23) is threadedly mounted on the inner sides of the first fixed block (21) and the second sliding block (22); and a motor (26) is fixedly mounted on the end of the reciprocating threaded rod (23).

6. A closed chest drainage device according to claim 5, characterized in that: The inner diameter of the anti-backflow block (35) is greater than the outer diameter of the sealing block (354), and the length of the sliding column (358) is greater than the distance between the sealing block (354) and the sealing groove (356).

7. A closed chest drainage device according to claim 6, characterized in that: The height of the drainage lower tube (171) is higher than the inner wall of the bottom end of the drainage bottle (1), and the diameter of the anti-tilt rotating plate (173) is greater than the diameter of the drainage closed tube (172).

8. A closed chest drainage device according to claim 7, characterized in that: The diameter of the blade blade (333) is smaller than the diameter of the first mounting block (33), and the first mounting block (33) is concentric with the blade blade (333).

9. A closed chest drainage device according to claim 8, characterized in that: The limiting protrusion (357), the sliding column (358) and the electromagnet (353) are concentric, and the outer diameter of the sealing block (354) is the same as the inner diameter of the sealing groove (356).

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