Anti-overflow closed thoracic drainage device

Abstract

The invention provides an anti-overflow thoracic cavity closed drainage device, and relates to the field of medical instruments. The anti-overflow closed thoracic drainage device comprises a connecting mechanism, a containing mechanism and a pressure adjusting mechanism, the connecting mechanism comprises a bottom frame and a top frame, vertical plates are rotationally connected to the middles of the outer walls of the two sides of the bottom frame respectively, and arc-shaped grooves are formed in the middles of the outer walls of the two sides of the top frame respectively; mounting cavities are formed in the front end and the rear end of the upper portion of the outer wall of the side, away from the center of the top frame, of the vertical plate correspondingly, first reset springs are fixedly connected to the middles of the inner walls of the sides, close to the center of the vertical plate, of the mounting cavities correspondingly, and shifting blocks are fixedly connected to the sides, away from the center of the vertical plate, of the first reset springs correspondingly; according to the closed thoracic drainage device, the detachable connecting mechanism, the liquid storage tank and the pressure regulating tank are matched for use, when the closed thoracic drainage device is full of drainage liquid, the whole closed thoracic drainage device does not need to be replaced, only the liquid storage tank needs to be replaced, and therefore the medical cost of a patient is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to an anti-overflow closed chest drainage device. Background Art

[0002] A closed chest drainage device is a medical device used to treat air, blood or fluid accumulation in the chest cavity to restore normal chest negative pressure and lung function. The closed chest drainage device can effectively prevent outside air from entering the chest cavity, reduce the risk of infection, and promote lung re-expansion. It plays a vital role in thoracic surgery and respiratory medicine.

[0003] However, the existing closed chest drainage devices on the market may tilt when the patient is transferred or exercising, causing the drainage fluid to flow back into the patient's chest cavity along the drainage tube connected to the patient, thereby causing the patient's chest cavity to become infected. In addition, most existing three-chamber closed chest drainage devices are of an integrated structure, and when the drainage fluid in the fluid storage chamber is full, the entire closed chest drainage device needs to be replaced, thereby increasing the patient's medical costs. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the deficiencies in the prior art, the present invention provides an anti-overflow type closed chest drainage device, which solves the problem that in the existing closed chest drainage device, the drainage device tilts during patient transfer or exercise, causing the drainage fluid to flow back into the patient's chest cavity along the drainage tube connected to the patient, thereby causing the patient's chest cavity to become infected. It also solves the problem that most existing three-chamber closed chest drainage devices are of an integrated structure, and when the drainage fluid in the liquid storage chamber is full, the entire closed chest drainage device needs to be replaced, thereby increasing the patient's medical costs.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an anti-overflow type chest closed drainage device, comprising a connecting mechanism, a accommodating mechanism and a pressure regulating mechanism, the connecting mechanism comprising a bottom frame and a top frame, the middle portions of the outer walls on both sides of the bottom frame are respectively rotatably connected to vertical plates, the middle portions of the outer walls on both sides of the top frame are respectively provided with arc grooves, the front and rear ends of the upper portions of the outer walls of the vertical plates away from the center of the top frame are respectively provided with mounting cavities, the middle portions of the inner walls of the mounting cavities on the side close to the center of the vertical plates are respectively fixedly connected to a No. 1 return spring, and the side of the No. 1 return spring away from the center of the vertical plates is respectively fixedly connected to a shift block;

[0008] The accommodating mechanism includes a liquid storage tank, one side of the bottom surface of the liquid storage tank is fixedly connected to a No. 1 partition and a No. 2 partition respectively, the other side of the upper surface of the liquid storage tank is connected through the No. 1 feed port, a No. 1 rubber pad is tightly fitted between the No. 1 feed port and the No. 1 sealing cover, one side of the upper surface of the No. 1 rubber pad is connected through the exhaust pipe, the other side of the top surface of the liquid storage tank is fixedly connected to a liquid collecting hopper, the center of the lower surface of the liquid collecting hopper is connected through the connecting pipe, the upper end of the inner wall of the connecting pipe is fixedly connected to a No. 1 orifice plate, the center of the lower surface of the No. 1 orifice plate is fixedly connected to a vertical rod, the lower end of the vertical rod is fixedly connected to a No. 3 orifice plate, the middle part of the outer wall of the vertical rod body is slidably connected to the No. 2 orifice plate, a plurality of mounting holes are evenly opened at the edge of the lower surface of the No. 1 orifice plate, and a plurality of No. 2 return springs are evenly fixedly connected to the edge of the upper surface of the No. 2 orifice plate;

[0009] The pressure regulating mechanism includes a pressure regulating box, one side of the upper surface of the pressure regulating box is connected to the No. 3 feed port, and a No. 3 rubber pad is tightly fitted between the No. 3 feed port and the No. 3 sealing cover. The other side of the upper surface of the pressure regulating box is connected to the No. 2 feed port, and a No. 2 rubber pad is tightly fitted between the No. 2 feed port and the No. 2 sealing cover. The bottom surface of the bottom frame and the top surface of the top frame are respectively clamped with a liquid storage tank and a pressure regulating box;

[0010] Through the above technical solution, by setting up a detachable connecting mechanism, a liquid storage tank and a pressure regulating tank for coordinated use, when the drainage fluid is full, there is no need to replace the entire chest closed drainage device, only the liquid storage tank needs to be replaced, thereby reducing the patient's medical costs.

[0011] Preferably, a No. 4 scale is provided on one side of the front outer wall of the pressure regulating box, a No. 3 partition is fixedly connected to the middle of the inner bottom surface and the inner top surface of the pressure regulating box, an air hole is opened at the upper end of the middle part of the outer wall of one side of the No. 3 partition, and a liquid-sealed scale tube is connected to the other side of the upper surface of the No. 2 rubber pad, and the liquid-sealed scale tube is connected to the exhaust pipe through an external hose;

[0012] Through the above technical solution, the No. 4 scale can assist medical staff in observing the water level in the chamber on one side of the pressure regulating box, and the chambers on both sides of the pressure regulating box are connected through the air holes to maintain gas circulation, and the liquid-sealed scale tube is used to prevent external gas from entering the interior of the liquid storage tank, thereby preventing air from entering the patient's chest cavity.

[0013] Preferably, a water inlet pipe is connected through one side of the upper surface of the second rubber pad, and a dust cover is threadedly connected to the upper end of the outer wall of the water inlet pipe;

[0014] With the above technical solution, medical staff can conveniently inject the liquid sealing water into the chamber on the other side of the pressure regulating box through the water inlet pipe, and immerse the lower end of the liquid sealing graduation tube below the liquid level of the liquid sealing water.

[0015] Preferably, the upper end of the outer wall of the No. 3 feed port is threadedly connected to a No. 3 sealing cover, the upper end of the outer wall of the No. 2 feed port is threadedly connected to a No. 2 sealing cover, one side of the upper surface of the No. 3 rubber pad is connected through a negative pressure pipe, and the other side of the upper surface of the No. 3 rubber pad is connected through a pressure regulating pipe;

[0016] Through the above technical solution, the No. 3 rubber pad and the No. 2 rubber pad are used to maintain the sealing of the No. 3 feed port and the No. 2 feed port respectively through the No. 3 sealing cover and the No. 2 sealing cover, and the negative pressure suction device is connected to the negative pressure tube to form air pressure inside the pressure regulating box, and the lower end of the pressure regulating tube is inserted into the chamber on one side of the pressure regulating box under the water surface, and the upper end of the pressure regulating tube is exposed to the air, allowing air to enter and exit the pressure regulating box to maintain the pressure balance inside the pressure regulating box.

[0017] Preferably, the upper ends of the No. 2 return springs are respectively fixedly connected to the top surface inside the mounting hole, the upper surfaces of the No. 2 orifice plate and the No. 3 orifice plate are respectively provided with a plurality of through holes of the same number, shape and position, and the upper surface of the No. 1 orifice plate is provided with a plurality of through holes of a different number, shape and position from those of the No. 2 orifice plate;

[0018] Through the above technical solution, when the drainage fluid presses the No. 2 orifice plate through the No. 1 orifice plate, the multiple No. 2 return springs are stretched, causing the drainage fluid to pass through the No. 2 orifice plate and the No. 3 orifice plate, and finally flow into the chamber on the other side of the liquid storage tank through the connecting pipe. However, when the drainage fluid inside the liquid storage tank flows into the connecting pipe and presses the No. 2 orifice plate through the No. 3 orifice plate, and cooperates with the multiple No. 2 return springs to make the No. 2 orifice plate tightly fit the No. 1 orifice plate, the drainage fluid is prevented from passing through the No. 1 and No. 2 orifice plates, thereby preventing the drainage fluid from flowing back into the patient's chest cavity along the drainage tube connected to the patient.

[0019] Preferably, the upper end of the outer wall of the No. 1 feed port is threadedly connected to a No. 1 sealing cap, the other side of the upper surface of the No. 1 rubber pad is connected through a liquid inlet pipe, and the upper end of the liquid inlet pipe is connected through a drainage tube connected to the patient;

[0020] Through the above technical solution, the No. 1 rubber pad can maintain the sealing of the No. 1 feed port through the No. 1 sealing cover, and the drainage fluid inside the drainage tube connected to the patient is collected inside the liquid storage tank through the liquid inlet pipe.

[0021] Preferably, a first scale, a second scale and a third scale are respectively provided at the middle of the front end outer wall of the liquid storage tank, and the upper ends of the first and second partitions are respectively provided with grooves, and the length of the first partition is shorter than that of the second partition;

[0022] Through the above technical solution, the No. 1 scale, the No. 2 scale and the No. 3 scale can assist medical staff in observing the volume and color changes of the drainage fluid in the three chambers separated by the No. 1 partition and the No. 2 partition inside the liquid storage tank, and the No. 1 partition and the No. 2 partition can be used to fill the three chambers in the liquid storage tank in sequence with the drainage fluid.

[0023] Preferably, the upper ends of the risers are respectively connected to the arc-shaped grooves by clamping, the middle parts of the inner walls of the front and rear ends of the arc-shaped grooves are respectively provided with clamping holes, the middle parts of the outer walls of the shift blocks away from the center of the risers are respectively fixedly connected with pins, the shift blocks are respectively slid inside the installation cavity, and the sides of the pins away from the center of the risers respectively penetrate the installation cavity to the outside of the risers and are connected to the clamping holes by clamping;

[0024] Through the above technical solution, the pin can be clamped into the inside of the clamping hole through the action of the No. 1 return spring, so that the vertical plate can be fixed inside the arc groove opened in the top frame, and then the liquid storage tank and the pressure regulating box can be fixed inside the top frame and the bottom frame.

[0025] Preferably, the four corners of the lower surface of the bottom frame are rotatably connected to support legs, and both sides of the upper surface of the top frame are fixedly connected to rotating seats, and the interiors of the rotating seats are rotatably connected to lifting rods;

[0026] Through the above technical solution, the stability of the bottom frame can be improved by the support legs, and the lifting rod can facilitate users to transport the anti-overflow type closed chest drainage device.

[0027] (3) Beneficial effects

[0028] The present invention provides an anti-overflow closed chest drainage device, which has the following beneficial effects:

[0029] 1. The present invention provides an anti-overflow closed chest drainage device. By setting a detachable connecting mechanism, a liquid storage tank and a pressure regulating tank for coordinated use, when the drainage fluid is full, there is no need to replace the entire closed chest drainage device, only the liquid storage tank needs to be replaced, thereby reducing the patient's medical costs.

[0030] 2. The present invention provides an anti-overflow type chest closed drainage device, which is arranged inside the connecting tube and connected by a vertical rod. The No. 1 orifice plate and the No. 3 orifice plate are used together with a No. 2 orifice plate provided with multiple No. 2 return springs to prevent the drainage device from tilting during patient transfer or exercise, causing the drainage fluid to flow back into the patient's chest cavity along the drainage tube connected to the patient, thereby preventing the patient's chest cavity from being infected. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0032] Figure 2 It is a partial cross-sectional structural diagram of the connecting mechanism of the present invention;

[0033] Figure 3 An exploded view of the accommodation mechanism of the present invention;

[0034] Figure 4 An exploded view of the pressure regulating mechanism of the present invention;

[0035] Figure 5 This is a schematic diagram of the axial cross-section structure of the liquid collecting hopper and the connecting pipe of the present invention;

[0036] Figure 6 An exploded view of the first orifice plate, the mounting hole, the second orifice plate, the second return spring, the third orifice plate, and the vertical rod of the present invention;

[0037] Figure 7 for Figure 2 Enlarged view of point A in the middle;

[0038] Figure 8 for Figure 4 Enlarged view of point B in the middle;

[0039] Figure 9 for Figure 5 Enlarged view of point C in the middle.

[0040] in,

[0041] 1. Connecting mechanism; 11. Bottom frame; 12. Support legs; 13. Top frame; 14. Rotating seat; 15. Lifting rod; 16. Arc groove; 17. Clamping hole; 18. Vertical plate; 19. Mounting cavity; 110. Shift block; 111. Pin; 112. Return spring No. 1;

[0042] 2. Accommodation mechanism; 21. Liquid storage tank; 22. Partition plate No. 1; 23. Partition plate No. 2; 24. Scale plate No. 1; 25. Scale plate No. 2; 26. Scale plate No. 3; 27. Feed port No. 1; 28. Sealing cover No. 1; 29. Rubber pad No. 1; 210. Liquid inlet pipe; 211. Exhaust pipe; 212. Liquid collecting hopper; 213. Connecting pipe; 214. Orifice plate No. 1; 215. Mounting hole; 216. Orifice plate No. 2; 217. Return spring No. 2; 218. Orifice plate No. 3; 219. Vertical rod;

[0043] 3. Pressure regulating mechanism; 31. Pressure regulating box; 32. Partition No. 3; 33. Air hole; 34. Scale No. 4; 35. Feed port No. 2; 36. Sealing cover No. 2; 37. Rubber pad No. 2; 38. Liquid-sealed graduated tube; 39. Water inlet pipe; 310. Dust cover; 311. Feed port No. 3; 312. Sealing cover No. 3; 313. Rubber pad No. 3; 314. Pressure regulating tube; 315. Negative pressure tube. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] like Figure 1-9 As shown, an embodiment of the present invention provides an anti-overflow type closed chest drainage device, including a connecting mechanism 1, a accommodating mechanism 2 and a pressure regulating mechanism 3. The connecting mechanism 1 includes a bottom frame 11 and a top frame 13. The middle parts of the outer walls on both sides of the bottom frame 11 are respectively rotatably connected to vertical plates 18. The middle parts of the outer walls on both sides of the top frame 13 are respectively provided with arc-shaped grooves 16. The front end and the rear end of the upper part of the outer wall of the vertical plate 18 away from the center of the top frame 13 are respectively provided with mounting cavities 19. The middle part of the inner wall of the mounting cavity 19 near the center of the vertical plate 18 is respectively fixedly connected to a No. 1 return spring 112. The side of the No. 1 return spring 112 away from the center of the vertical plate 18 is respectively fixedly connected to a shift block 110.

[0046] The accommodating mechanism 2 includes a liquid storage tank 21, one side of the bottom surface of the liquid storage tank 21 is fixedly connected to a No. 1 partition 22 and a No. 2 partition 23, and the other side of the upper surface of the liquid storage tank 21 is connected to a No. 1 feed port 27. A No. 1 rubber pad 29 is tightly fitted between the No. 1 feed port 27 and the No. 1 sealing cover 28. One side of the upper surface of the No. 1 rubber pad 29 is connected to an exhaust pipe 211. The other side of the top surface of the liquid storage tank 21 is fixedly connected to a liquid collecting hopper 212. The center of the lower surface of the liquid collecting hopper 212 is connected to the No. 1 feed port 27. A connecting tube 213 is connected, the upper end of the inner wall of the connecting tube 213 is fixedly connected to a No. 1 orifice plate 214, a vertical rod 219 is fixedly connected to the center of the lower surface of the No. 1 orifice plate 214, the lower end of the vertical rod 219 is fixedly connected to a No. 3 orifice plate 218, and the middle part of the outer wall of the vertical rod 219 is slidably connected to the No. 2 orifice plate 216. A plurality of mounting holes 215 are evenly opened on the edge of the lower surface of the No. 1 orifice plate 214, and a plurality of No. 2 return springs 217 are evenly fixedly connected to the edge of the upper surface of the No. 2 orifice plate 216;

[0047] The pressure regulating mechanism 3 includes a pressure regulating box 31. One side of the upper surface of the pressure regulating box 31 is connected to the third feed port 311. A third rubber pad 313 is tightly fitted between the third feed port 311 and the third sealing cover 312. The other side of the upper surface of the pressure regulating box 31 is connected to the second feed port 35. A second rubber pad 37 is tightly fitted between the second feed port 35 and the second sealing cover 36. The bottom surface of the bottom frame 11 and the top surface of the top frame 13 are respectively connected to the liquid storage tank 21 and the pressure regulating box 31.

[0048] By using the No. 1 orifice plate 214 and the No. 3 orifice plate 218 connected by the vertical rod 219 arranged inside the connecting tube 213, and the No. 2 orifice plate 216 provided with multiple No. 2 return springs 217, the drainage device is prevented from tilting during patient transfer or exercise, causing the drainage fluid to flow back into the patient's chest cavity along the drainage tube connected to the patient, thereby preventing the patient's chest cavity from being infected.

[0049] A fourth scale gauge 34 is provided on one side of the front outer wall of the pressure regulating box 31. A third partition plate 32 is fixedly connected to the middle of the bottom and top surfaces of the pressure regulating box 31. An air hole 33 is provided at the upper end of the middle portion of the outer wall of one side of the third partition plate 32. A liquid-sealed scale tube 38 is connected to the other side of the upper surface of the second rubber pad 37. The liquid-sealed scale tube 38 is connected to the exhaust pipe 211 via an external hose.

[0050] The No. 4 scale 34 can assist medical staff in observing the water level in the chamber on one side of the pressure regulating box 31, and the air hole 33 connects the chambers on both sides of the pressure regulating box 31 to maintain gas circulation, and the liquid-sealed scale tube 38 prevents external gas from entering the interior of the liquid storage tank 21, thereby preventing air from entering the patient's chest cavity.

[0051] A water inlet pipe 39 is connected to one side of the upper surface of the second rubber pad 37, and a dust cover 310 is threadedly connected to the upper end of the outer wall of the water inlet pipe 39;

[0052] Medical personnel can conveniently inject the liquid sealing water into the chamber on the other side of the pressure regulating box 31 through the water inlet pipe 39, and make the lower end of the liquid sealing graduation tube 38 submerge below the liquid level of the liquid sealing water.

[0053] The upper end of the outer wall of the No. 3 feed port 311 is threadedly connected to a No. 3 sealing cap 312, the upper end of the outer wall of the No. 2 feed port 35 is threadedly connected to a No. 2 sealing cap 36, one side of the upper surface of the No. 3 rubber pad 313 is connected through a negative pressure pipe 315, and the other side of the upper surface of the No. 3 rubber pad 313 is connected through a pressure regulating pipe 314;

[0054] The No. 3 rubber pad 313 and the No. 2 rubber pad 37 are used to maintain the sealing of the No. 3 feed port 311 and the No. 2 feed port 35 respectively through the No. 3 sealing cover 312 and the No. 2 sealing cover 36, and the negative pressure suction device is connected to the negative pressure tube 315 to form air pressure inside the pressure regulating box 31, and the lower end of the pressure regulating tube 314 is inserted into the chamber on one side of the pressure regulating box 31 under the water surface, and the upper end of the pressure regulating tube 314 is exposed to the air, allowing air to enter and exit the pressure regulating box 31 to maintain the pressure balance inside the pressure regulating box 31.

[0055] The upper ends of the No. 2 return springs 217 are fixedly connected to the top surfaces of the mounting holes 215. The upper surfaces of the No. 2 orifice plates 216 and the No. 3 orifice plates 218 are respectively provided with a plurality of through holes of the same number, shape, and position. The upper surface of the No. 1 orifice plate 214 is provided with a plurality of through holes of a different number, shape, and position from those of the No. 2 orifice plate 216.

[0056] When the drainage fluid presses the No. 2 orifice plate 216 through the No. 1 orifice plate 214, the multiple No. 2 return springs 217 are stretched, causing the drainage fluid to pass through the No. 2 orifice plate 216 and the No. 3 orifice plate 218, and finally flow into the chamber on the other side of the fluid storage tank 21 through the connecting tube 213. However, when the drainage fluid inside the fluid storage tank 21 flows into the connecting tube 213 and presses the No. 2 orifice plate 216 through the No. 3 orifice plate 218, and cooperates with the multiple No. 2 return springs 217 to make the No. 2 orifice plate 216 fit tightly against the No. 1 orifice plate 214, the drainage fluid is prevented from passing through the No. 1 orifice plate 214 and the No. 2 orifice plate 216, thereby preventing the drainage fluid from flowing back into the patient's chest cavity along the drainage tube connected to the patient.

[0057] The upper end of the outer wall of the No. 1 feed port 27 is threadedly connected to the No. 1 sealing cap 28, and the other side of the upper surface of the No. 1 rubber pad 29 is connected to the liquid inlet pipe 210, and the upper end of the liquid inlet pipe 210 is connected to the drainage tube connected to the patient;

[0058] The No. 1 sealing cover 28 can enable the No. 1 rubber pad 29 to maintain the sealing of the No. 1 feed port 27, and the drainage fluid inside the drainage tube connected to the patient is collected into the inside of the liquid storage tank 21 through the liquid inlet pipe 210.

[0059] The middle of the front outer wall of the liquid storage tank 21 is provided with a first scale 24, a second scale 25 and a third scale 26. The upper ends of the first partition 22 and the second partition 23 are respectively provided with grooves. The length of the first partition 22 is shorter than that of the second partition 23.

[0060] The No. 1 scale 24, the No. 2 scale 25 and the No. 3 scale 26 can assist medical staff in observing the volume and color changes of the drainage fluid in the three chambers separated by the No. 1 partition 22 and the No. 2 partition 23 inside the fluid storage tank 21, and the drainage fluid can be filled in the three chambers of the fluid storage tank 21 in sequence through the No. 1 partition 22 and the No. 2 partition 23.

[0061] The upper ends of the risers 18 are respectively engaged with the arcuate grooves 16, and the middle portions of the inner walls of the front and rear ends of the arcuate grooves 16 are respectively provided with engaging holes 17. The middle portions of the outer walls of the shift blocks 110 on the side away from the center of the risers 18 are respectively fixedly connected with pins 111. The shift blocks 110 slide inside the mounting cavities 19, and the sides of the pins 111 on the side away from the center of the risers 18 respectively penetrate the mounting cavities 19 to the outside of the risers 18 and are engaged with the engaging holes 17.

[0062] Through the action of the No. 1 return spring 112, the pin 111 can be engaged with the inside of the clamping hole 17, so that the vertical plate 18 can be fixed inside the arc groove 16 opened in the top frame 13, and then the liquid storage tank 21 and the pressure regulating tank 31 can be fixed inside the top frame 13 and the bottom frame 11.

[0063] The four corners of the lower surface of the bottom frame 11 are rotatably connected to support legs 12, and both sides of the upper surface of the top frame 13 are fixedly connected to rotating seats 14, and the interior of the rotating seats 14 are rotatably connected to lifting rods 15;

[0064] The support legs 12 can improve the stability of the bottom frame 11, and the lifting rod 15 can facilitate users to transport the anti-overflow type closed chest drainage device.

[0065] Working principle: When using the anti-overflow closed chest drainage device, first, the medical staff injects the liquid sealing water into the chamber on the other side of the pressure regulating box 31 through the water inlet pipe 39, and immerses the lower end of the liquid sealing scale tube 38 below the liquid level of the liquid sealing water. Then, the dust cover 310 seals the water inlet pipe 39. Subsequently, the negative pressure tube 315 is connected to the negative pressure suction device, and the liquid sealing water is injected into the chamber on one side of the pressure regulating box 31 through the pressure regulating tube 314, so that the lower end of the pressure regulating tube 314 is immersed in the water. Secondly, the liquid-sealed graduated tube 38 is connected to the exhaust tube 211 through an external hose. Then, the liquid inlet tube 210 is connected to the drainage tube connected to the patient. Finally, the negative pressure suction device is started. When the drainage fluid passes through the No. 1 orifice plate 214 and presses the No. 2 orifice plate 216, the multiple No. 2 return springs 217 are stretched, causing the drainage fluid to pass through the No. 2 orifice plate 216 and the No. 3 orifice plate 218, and the drainage fluid inside the drainage tube flows into the chamber on the other side of the liquid storage tank 21 through the connecting tube 213.

[0066] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An anti-overflow closed chest drainage device, comprising a connecting mechanism (1), a receiving mechanism (2) and a pressure regulating mechanism (3), characterized in that: The connecting mechanism (1) comprises a bottom frame (11) and a top frame (13), wherein the middle portions of the outer walls on both sides of the bottom frame (11) are rotatably connected to vertical plates (18), and the middle portions of the outer walls on both sides of the top frame (13) are respectively provided with arc-shaped grooves (16), and the front end and the rear end of the upper portion of the outer wall of the vertical plate (18) away from the center of the top frame (13) are respectively provided with mounting cavities (19), and the middle portion of the inner wall of the mounting cavity (19) near the center of the vertical plate (18) is respectively fixedly connected to a No. 1 return spring (112), and the side of the No. 1 return spring (112) away from the center of the vertical plate (18) is respectively fixedly connected to a shift block (110); The accommodating mechanism (2) comprises a liquid storage tank (21), one side of the inner bottom surface of the liquid storage tank (21) is fixedly connected to a No. 1 partition plate (22) and a No. 2 partition plate (23), the other side of the upper surface of the liquid storage tank (21) is connected through a No. 1 feed port (27), a No. 1 rubber pad (29) is tightly fitted between the No. 1 feed port (27) and the No. 1 sealing cover (28), one side of the upper surface of the No. 1 rubber pad (29) is connected through a vent pipe (211), the other side of the inner top surface of the liquid storage tank (21) is fixedly connected to a liquid collecting hopper (212), the center of the lower surface of the liquid collecting hopper (212) is connected to the No. 1 feed port (27). A connecting pipe (213) is connected through the connecting pipe (213), the upper end of the inner wall of the connecting pipe (213) is fixedly connected to a No. 1 orifice plate (214), the center of the lower surface of the No. 1 orifice plate (214) is fixedly connected to a vertical rod (219), the lower end of the vertical rod (219) is fixedly connected to a No. 3 orifice plate (218), the middle part of the outer wall of the vertical rod (219) is slidably connected to a No. 2 orifice plate (216), a plurality of mounting holes (215) are evenly opened at the edge of the lower surface of the No. 1 orifice plate (214), and a plurality of No. 2 return springs (217) are evenly fixedly connected to the edge of the upper surface of the No. 2 orifice plate (216); The pressure regulating mechanism (3) comprises a pressure regulating box (31), one side of the upper surface of the pressure regulating box (31) is connected to a No. 3 feed port (311), a No. 3 rubber pad (313) is tightly fitted between the No. 3 feed port (311) and the No. 3 sealing cover (312), the other side of the upper surface of the pressure regulating box (31) is connected to a No. 2 feed port (35), a No. 2 rubber pad (37) is tightly fitted between the No. 2 feed port (35) and the No. 2 sealing cover (36), and the bottom surface of the bottom frame (11) and the top surface of the top frame (13) are respectively connected to the liquid storage tank (21) and the pressure regulating box (31).

2. The anti-overflow closed chest drainage device according to claim 1, characterized in that: A fourth scale gauge (34) is provided on one side of the front end outer wall of the pressure regulating box (31), a third partition (32) is fixedly connected to the middle of the inner bottom surface and the inner top surface of the pressure regulating box (31), an air hole (33) is provided at the upper end of the middle part of the outer wall of one side of the third partition (32), a liquid-sealed scale tube (38) is connected through the other side of the upper surface of the second rubber pad (37), and the liquid-sealed scale tube (38) is connected to the exhaust pipe (211) through an external hose.

3. The anti-overflow closed chest drainage device according to claim 1, characterized in that: A water inlet pipe (39) is connected through one side of the upper surface of the second rubber pad (37), and a dust cover (310) is threadedly connected to the upper end of the outer wall of the water inlet pipe (39).

4. The anti-overflow closed chest drainage device according to claim 1, characterized in that: The upper end of the outer wall of the No. 3 feed port (311) is threadedly connected to a No. 3 sealing cover (312), the upper end of the outer wall of the No. 2 feed port (35) is threadedly connected to a No. 2 sealing cover (36), one side of the upper surface of the No. 3 rubber pad (313) is connected through a negative pressure pipe (315), and the other side of the upper surface of the No. 3 rubber pad (313) is connected through a pressure regulating pipe (314).

5. The anti-overflow closed chest drainage device according to claim 1, characterized in that: The upper ends of the No. 2 return springs (217) are fixedly connected to the top surfaces inside the mounting holes (215), the upper surfaces of the No. 1 orifice plate (214) and the No. 3 orifice plate (218) are respectively provided with a plurality of through holes of the same number, shape and position, and the upper surface of the No. 2 orifice plate (216) is provided with a plurality of through holes of different number, shape and position from those of the No. 1 orifice plate (214).

6. The anti-overflow closed chest drainage device according to claim 1, characterized in that: The upper end of the outer wall of the No. 1 feed port (27) is threadedly connected to a No. 1 sealing cover (28), and the other side of the upper surface of the No. 1 rubber pad (29) is connected to a liquid inlet pipe (210), and the upper end of the liquid inlet pipe (210) is connected to a drainage pipe connected to the patient.

7. The anti-overflow closed chest drainage device according to claim 1, characterized in that: A first scale (24), a second scale (25) and a third scale (26) are respectively provided in the middle of the front end outer wall of the liquid storage tank (21), and grooves are respectively provided at the upper ends of the first partition (22) and the second partition (23), and the length of the first partition (22) is shorter than that of the second partition (23).

8. The anti-overflow closed chest drainage device according to claim 1, characterized in that: The upper ends of the vertical plates (18) are respectively connected to the arc grooves (16) by snapping, and the middle parts of the inner walls of the front and rear ends of the arc grooves (16) are respectively provided with snap holes (17). The middle parts of the outer walls of the shifting blocks (110) on one side away from the center of the vertical plates (18) are respectively fixedly connected with pins (111). The shifting blocks (110) slide inside the installation cavity (19), and the pins (111) on one side away from the center of the vertical plates (18) respectively penetrate the installation cavity (19) to the outside of the vertical plates (18) and are snap-connected with the snap holes (17).

9. The anti-overflow closed chest drainage device according to claim 1, characterized in that: The four corners of the lower surface of the bottom frame (11) are rotatably connected to support legs (12), and both sides of the upper surface of the top frame (13) are fixedly connected to rotating seats (14), and the interior of the rotating seats (14) is rotatably connected to lifting rods (15).

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