Anti-reflux device for closed thoracic drainage

Abstract

The utility model discloses an anti-reflux device for closed drainage of thoracic cavity in the technical field of drainage of pleural effusion, which comprises a drainage bottle and a mounting cover mounted at the top of the drainage bottle, a sealing ring used for sealing penetrates through the inner side of the mounting cover, a first drainage piece used for drainage penetrates through the inner side of the sealing ring, and a second drainage piece used for drainage penetrates through the inner side of the first drainage piece. The bottom of the first drainage piece is connected with a slow flow frame, the bottom of the slow flow frame is connected with a second drainage piece, an anti-backflow assembly is installed in the slow flow frame, accumulated liquid in the slow flow frame flows into the drainage bottle through the second drainage piece, and the accumulated liquid in the drainage bottle is prevented from flowing back through the first drainage piece through the anti-backflow assembly. The problems that when existing equipment is used for draining pleural effusion, the negative pressure of the pleural cavity is increased, effusion is prone to backflow, soiling liquid backflow is prone to causing infection to a patient, a liquid storage structure is complex to disassemble and assemble, a bottle body is inconvenient to clean, soiling liquid in the bottle body is left to cause pollution, and the drainage effect is poor are solved. The safety and the practicability of the drainage operation of the equipment are influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of pleural effusion drainage, in particular to a backflow prevention device for closed pleural drainage. Background Art

[0002] Pleural effusion is a common disease in respiratory medicine. The treatment of pleural effusion mostly requires puncture sampling and chemotherapy to assist diagnosis and treatment. Currently, disposable drainage devices are mostly used in clinical practice to extract pleural effusion. The existing closed chest drainage devices can effectively solve the problems of gas and fluid accumulation in patients, help maintain negative pressure in the patient's chest cavity, and ensure the normal vital characteristics of the patient's lungs. However, the existing drainage devices will experience backflow when the patient's chest cavity negative pressure is high.

[0003] When the existing equipment drains pleural effusion, the negative pressure in the pleural cavity increases, and the effusion is prone to backflow, which can easily cause the reflux of dirty fluid and cause infection to the patient. The disassembly and assembly of the liquid storage structure is cumbersome, and it is not convenient to clean the bottle body, resulting in residual dirty fluid in the bottle body and contamination, affecting the safety and practicality of the equipment for drainage operations. Therefore, technical personnel in this field provide a backflow prevention device for closed chest drainage to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a backflow prevention device for closed chest drainage to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backflow prevention device for closed chest drainage, comprising a drainage bottle and a mounting cover installed on the top of the drainage bottle, a sealing ring for sealing is passed through the inner side of the mounting cover, a first drainage piece for drainage is passed through the inner side of the sealing ring, a slow flow frame is connected to the bottom of the first drainage piece, a second drainage piece is connected to the bottom of the slow flow frame, and a backflow prevention component is installed in the slow flow frame;

[0006] The bottom of the drainage bottle is connected with a drainage pipe, a valve for control is installed in the drainage pipe, locking components for fixing the installation cover are installed around the installation cover and on the top of the drainage bottle, and the first drainage piece is screwed and installed with the slow flow frame.

[0007] Preferably: the locking assembly includes movable grooves respectively opened around the outer side of the mounting cover, a pad is slidably connected to the inner side of the movable groove, a pull rod for driving is connected to one side of the pad, a first spring for squeezing is sleeved on the inner side of the movable groove and located on the outer side of the pull rod, the pull rod is fixedly connected to the pad, and both ends of the first spring are respectively fixedly connected to the pad and the movable groove.

[0008] Preferably: the locking assembly also includes a connecting plate sleeved on the outside of the pull rod for connection, one side of the connecting plate is connected to a locking rod for fixing, four circumferentially arranged locking grooves are opened on the outside of the drainage bottle, and the connecting plate is fixedly connected to the locking rod.

[0009] Preferably: the anti-backflow component includes a guide pipe installed on the top of the inner side of the slow-flow rack for connection, two support members on the bottom of the inner side of the slow-flow rack, the top of the support member is connected with a fixed plate for support, the top of the fixed plate is connected with a floating ball for sealing, the two ends of the support member are respectively fixedly connected to the bottom of the slow-flow rack and the fixed plate, the fixed plate is fixedly connected to the floating ball, and both ends of the guide pipe are trumpet-shaped openings.

[0010] Preferably, a sealing ring is provided on the inner bottom of the installation cover.

[0011] Preferably, a guide plate for guiding flow is provided on the inner side of the guide pipe, and the guide plate is spiral-shaped.

[0012] Preferably, a guide rod is installed at the bottom of the inner side of the support member, and a second spring for supporting is sleeved on the outer side of the guide rod, and the second spring is fixedly connected to the support member.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by arranging a first drainage piece, a slow-flow rack and a second drainage piece, the first drainage piece can be connected to the access tube of the patient's chest cavity, and the pleural effusion flows into the slow-flow rack through the first drainage piece, and the effusion in the slow-flow rack flows into the drainage bottle through the second drainage piece. The anti-backflow component prevents the effusion in the drainage bottle from backflowing through the first drainage piece, thereby preventing the dirty liquid in the drainage bottle from entering the patient's chest cavity and causing infection. The locking component can be used to install and disassemble the mounting cover and the drainage bottle lock, so as to remove the drainage bottle for cleaning. The slow-flow rack can be disassembled through the first drainage piece, so as to take out the slow-flow rack for cleaning.

[0015] 2. In the utility model, by setting a pull rod, a first spring and a connecting plate, the pull rod can be used to drive the pad to slide in the movable groove, and the first spring in the movable groove can squeeze the pad, so that the pad drives the locking rod to enter or disengage from the locking groove, and the installation cover is separated from or installed and fixed to the drainage bottle, so as to facilitate the removal of the drainage bottle for cleaning and prevent contamination caused by residual dirty liquid in the drainage bottle.

[0016] 3. In the utility model, by arranging a guide tube, a support member and a float, one-third of the volume of the drainage bottle is injected into the drainage bottle with physiological saline solution, the support member supports the float through the fixed plate, the guide tube can guide the accumulated fluid discharged from the bottom of the first drainage member, the accumulated fluid can impact the float downward, so that the float presses the support member downward through the fixed plate, so that the float is separated from the bottom of the guide tube, so that the accumulated fluid enters the slow-flow rack, the accumulated fluid and the physiological saline solution can support the float upward, so that the float blocks the bottom of the guide tube, prevents the accumulated fluid and the physiological saline solution from backflowing through the first drainage member, avoids the infection of the patient by the dirty fluid, and improves the safety and practicality of the drainage operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0019] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 The overall structure of the utility model Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 The overall structure of the utility model Figure 2 Enlarged view of point C in the middle.

[0022] In the figure: 1. drainage bottle; 2. mounting cover; 3. sealing ring; 4. first drainage member; 5. slow-flow rack; 6. second drainage member; 7. sewage pipe; 8. movable groove; 9. pad; 10. pull rod; 11. first spring; 12. connecting plate; 13. locking rod; 14. locking groove; 15. guide tube; 16. support member; 17. fixing plate; 18. float; 19. sealing ring; 20. guide plate; 21. guide rod; 22. second spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 to Figure 5In an embodiment of the utility model, a backflow prevention device for closed chest drainage includes a drainage bottle 1 and a mounting cover 2 installed on the top of the drainage bottle 1, a sealing ring 3 for sealing is penetrated on the inner side of the mounting cover 2, a first drainage piece 4 for drainage is penetrated on the inner side of the sealing ring 3, a slow flow frame 5 is connected to the bottom of the first drainage piece 4, a second drainage piece 6 is connected to the bottom of the slow flow frame 5, an anti-backflow component is installed in the slow flow frame 5, a drain pipe 7 is connected to the bottom of the drainage bottle 1, a valve for control is installed in the drain pipe 7, a locking component for fixing the mounting cover 2 is installed around the mounting cover 2 and on the top of the drainage bottle 1, and the first drainage piece 4 is screwed and installed with the slow flow frame 5.

[0025] When in use, the first drainage piece 4 can be connected to the discharge tube of the patient's chest cavity, and the pleural effusion flows into the slow-flow rack 5 through the first drainage piece 4, and the effusion in the slow-flow rack 5 flows into the drainage bottle 1 through the second drainage piece 6. The anti-backflow component prevents the effusion in the drainage bottle 1 from backflowing through the first drainage piece 4, so as to avoid the dirty liquid in the drainage bottle 1 entering the patient's chest cavity and causing infection. The locking component can be used to lock and install and disassemble the mounting cover 2 and the drainage bottle 1, so as to remove the drainage bottle 1 for cleaning. The slow-flow rack 5 can be disassembled through the first drainage piece 4, so as to take out the slow-flow rack 5 for cleaning.

[0026] In one embodiment, specifically, the locking assembly includes movable grooves 8 respectively opened around the outer side of the mounting cover 2, a pad 9 is slidably connected to the inner side of the movable groove 8, a pull rod 10 for driving is connected to one side of the pad 9, a first spring 11 for squeezing is sleeved on the inner side of the movable groove 8 and located on the outer side of the pull rod 10, the locking assembly also includes a connecting plate 12 sleeved on the outer side of the pull rod 10 for connection, a locking rod 13 for fixing is connected to one side of the connecting plate 12, four circumferentially arranged locking grooves 14 are opened on the outer side of the drainage bottle 1, the connecting plate 12 is fixedly connected to the locking rod 13, the pull rod 10 is fixedly connected to the pad 9, and both ends of the first spring 11 are fixedly connected to the pad 9 and the movable groove 8 respectively.

[0027] Among them, the pull rod 10 can be used to drive the pad 9 to slide in the movable groove 8, and the first spring 11 in the movable groove 8 can squeeze the pad 9, so that the pad 9 drives the locking rod 13 to enter or disengage from the locking groove 14, and the mounting cover 2 is disengaged from or installed and fixed with the drainage bottle 1, so as to facilitate the removal of the drainage bottle 1 for cleaning, and prevent the drainage bottle 1 from being polluted by residual dirty liquid.

[0028] Furthermore, the backflow prevention component includes a guide tube 15 installed on the top of the inner side of the slow-flow rack 5 for connection, two support members 16 on the bottom of the inner side of the slow-flow rack 5, the top of the support member 16 is connected to a fixed plate 17 for support, the top of the fixed plate 17 is connected to a float 18 for sealing, the two ends of the support member 16 are respectively fixedly connected to the bottom of the slow-flow rack 5 and the fixed plate 17, the fixed plate 17 is fixedly connected to the float 18, and both ends of the guide tube 15 are trumpet-shaped openings.

[0029] In one embodiment, specifically, one-third of the volume of the drainage bottle 1 is injected into the drainage bottle 1, the support member 16 supports the float 18 through the fixed plate 17, and the guide tube 15 can guide the accumulated fluid discharged from the bottom of the first drainage member 4. The accumulated fluid can impact the float 18 downward, so that the float 18 can squeeze the support member 16 downward through the fixed plate 17, so that the float 18 can break away from the bottom of the guide tube 15, so that the accumulated fluid can enter the slow-flow rack 5. The accumulated fluid and the physiological saline solution can support the float 18 upward, so that the float 18 blocks the bottom of the guide tube 15, preventing the accumulated fluid and the physiological saline solution from backflowing through the first drainage member 4, avoiding the infection of the patient by the dirty fluid, and improving the safety and practicality of the equipment drainage operation.

[0030] Among them, a sealing ring 19 is laid on the inner bottom of the installation cover 2 for sealing. The sealing ring 19 can seal the installation cover 2 and the top of the drainage bottle 1 to prevent the dirty liquid from overflowing or leaking, thereby improving the sealing between the installation cover 2 and the drainage bottle 1.

[0031] In one embodiment, specifically, a guide plate 20 for guiding flow is provided on the inner side of the guide pipe 15. The guide plate 20 is spiral-shaped. The guide plate 20 in the guide pipe 15 can guide the accumulated liquid downward to avoid blockage of the accumulated liquid and increase the flow rate of the accumulated liquid flowing downward.

[0032] Among them, a guide rod 21 is installed at the bottom of the inner side of the support member 16, and a second spring 22 for support is sleeved on the outer side of the guide rod 21. The second spring 22 is fixedly connected to the support member 16. The guide rod 21 guides the second spring 22 to prevent the second spring 22 from twisting. The second spring 22 can support the support member 16 upward, improve the stability of the support member 16 supporting the fixed plate 17 upward, and at the same time, the support member 16 can protect the second spring 22 and prevent the second spring 22 from sticking and accumulating fluid that is difficult to clean.

[0033] The working principle of this utility model:

[0034] First, inject one-third of the volume of physiological saline into the drainage bottle 1, then connect the first drainage piece 4 to the outlet tube of the patient's chest cavity, and the pleural effusion flows into the slow-flow rack 5 through the first drainage piece 4. At the same time, the guide tube 15 guides the effusion discharged from the bottom of the first drainage piece 4. At this time, the guide plate 20 guides the effusion downward, and then the effusion impacts the float 18 downward. At the same time, the float 18 squeezes the support 16 downward through the fixed plate 17, and the support 16 squeezes the second spring 22. Then the effusion in the slow-flow rack 5 flows into the drainage bottle 1 through the second drainage piece 6. When negative pressure is generated in the abdominal cavity, the effusion The float 18 is supported upward by the physiological saline solution, so that the float 18 blocks the bottom of the guide tube 15. At the same time, the float 18 drives the support member 16 to extend through the fixed plate 17. At the same time, the second spring 22 supports the support member 16 to prevent the effusion water solution from flowing back to the first guide member 4 through the guide tube 15. When cleaning is required, the pull rod 10 drives the pad 9 to slide in the movable groove 8. At the same time, the pad 9 squeezes the first spring 11 in the movable groove 8, and then the pad 9 drives the locking rod 13 to disengage from the locking groove 14, and then the mounting cover 2 is taken out and disengaged from the drainage bottle 1, so that the drainage bottle 1 can be cleaned.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A backflow prevention device for closed chest drainage, comprising a drainage bottle (1) and a mounting cover (2) mounted on the top of the drainage bottle (1), characterized in that: A sealing ring (3) for sealing is passed through the inner side of the installation cover (2), a first flow guide member (4) for guiding flow is passed through the inner side of the sealing ring (3), a slow flow frame (5) is connected to the bottom of the first flow guide member (4), a second flow guide member (6) is connected to the bottom of the slow flow frame (5), and a backflow prevention component is installed in the slow flow frame (5); The bottom of the drainage bottle (1) is connected to a drainage pipe (7), a valve for control is installed in the drainage pipe (7), locking components for fixing the mounting cover (2) are installed around the mounting cover (2) and on the top of the drainage bottle (1), and the first drainage member (4) is screwed to the slow flow frame (5).

2. The anti-backflow device for closed chest drainage according to claim 1, characterized in that: The locking assembly comprises movable grooves (8) respectively arranged around the outer side of the mounting cover (2); a pad (9) is slidably connected to the inner side of the movable groove (8); a pull rod (10) for driving is connected to one side of the pad (9); a first spring (11) for squeezing is provided inside the movable groove (8) and outside the pull rod (10); the pull rod (10) is fixedly connected to the pad (9); and two ends of the first spring (11) are respectively fixedly connected to the pad (9) and the movable groove (8).

3. The anti-backflow device for closed chest drainage according to claim 2, characterized in that: The locking assembly also includes a connecting plate (12) which is sleeved on the outside of the pull rod (10) for connection, and a locking rod (13) for fixing is connected to one side of the connecting plate (12). Four locking grooves (14) arranged in a circumference are provided on the outside of the drainage bottle (1), and the connecting plate (12) is fixedly connected to the locking rod (13).

4. The anti-backflow device for closed chest drainage according to claim 1, characterized in that: The anti-backflow component comprises a flow guide tube (15) installed at the top of the inner side of the slow flow rack (5) for connection, two support members (16) at the bottom of the inner side of the slow flow rack (5), the top of the support member (16) is connected to a fixed plate (17) for support, the top of the fixed plate (17) is connected to a floating ball (18) for sealing, the two ends of the support member (16) are respectively fixedly connected to the bottom of the slow flow rack (5) and the fixed plate (17), the fixed plate (17) is fixedly connected to the floating ball (18), and the two ends of the flow guide tube (15) are both trumpet-shaped openings.

5. The anti-backflow device for closed chest drainage according to claim 1, characterized in that: A sealing ring (19) for sealing is provided on the inner bottom of the installation cover (2).

6. The anti-backflow device for closed chest drainage according to claim 4, characterized in that: A guide plate (20) for guiding flow is provided inside the guide tube (15), and the guide plate (20) is spiral-shaped.

7. The anti-backflow device for closed chest drainage according to claim 4, characterized in that: A guide rod (21) is installed at the bottom of the inner side of the support member (16), and a second spring (22) for supporting is sleeved on the outer side of the guide rod (21), and the second spring (22) is fixedly connected to the support member (16).

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