Pulmonary tuberculosis sputum taking device

Abstract

The invention discloses a pulmonary tuberculosis sputum taking device, which relates to the technical field of pulmonary tuberculosis sputum taking, specifically comprises a portable box, an adjustable sputum aspirator, a sputum storage tank, a sheath tube and a sputum taking tube, and is characterized in that a cavity for placing the adjustable sputum aspirator, a micro liquid pump, a control box, a liquid storage box and a storage drawer is formed in the portable box; the upper end and the lower end of the portable box are each fixedly provided with a fixing ring for installation of a bandage. The sputum taking tube is sleeved with the sheath tube for spraying normal saline or sodium bicarbonate solution, so that only one-time tube placement is needed in the sputum taking process, repeated tube placement is not needed, the comfort of a patient is improved, the end, making contact with the breathing inner wall of the patient, of the sputum taking tube is improved, a plurality of flexible contacts are designed, and the sputum taking tube is convenient to use. Therefore, when the sputum taking tube is in contact with the respiratory inner wall mucous membrane of a patient, the sputum taking tube is separated by the soft flexible contact, so that the end of the sputum taking tube cannot scratch the respiratory inner wall mucous membrane.

Description

Technical Field

[0001] The present invention relates to the technical field of sputum collection for pulmonary tuberculosis, and specifically to a sputum collection device for pulmonary tuberculosis. Background Art

[0002] For patients with pulmonary tuberculosis to obtain an accurate diagnosis, sputum needs to be collected to determine whether there are Mycobacterium tuberculosis in the sputum. Most of the existing sputum collection methods require patients to leave sputum in a container by themselves and then send it to the hospital for examination. Some bedridden patients are unable to collect sputum in a container by themselves and need the assistance of medical staff or family members to collect sputum.

[0003] When collecting sputum, if the sputum is too viscous to be sucked out, the suction catheter needs to be pulled out and then physiological saline or sodium bicarbonate solution is injected into the patient's throat to dilute the sputum, and then the suction catheter is inserted for suction. This increases the number of times the suction catheter is inserted into the human body, increases the patient's pain, and after the suction catheter is inserted to the suction position, the suction holes on the suction catheter are likely to adsorb to the inner wall of the patient's respiratory tract, easily causing damage to the inner wall of the respiratory tract. Summary of the Invention

[0004] The purpose of the present invention is to provide a sputum collection device for pulmonary tuberculosis to solve the problems raised in the above background art.

[0005] To achieve the above invention purpose, the present invention adopts the following technical solutions:

[0006] A sputum collection device for pulmonary tuberculosis provided by the present invention includes a portable box, an adjustable suction device, a sputum storage tank, a sheath tube, and a sputum collection tube. A cavity for placing the adjustable suction device, a micro liquid pump, a control box, a liquid storage tank, and a storage drawer is provided inside the portable box. Fixing rings for installing straps are fixed at both the upper and lower ends of the portable box:

[0007] A sputum storage tank for placing sputum is provided on one side of the adjustable suction device. The sputum storage tank is connected to the adjustable suction device through a negative pressure tube above it. A medical one-way valve is provided in the middle of the negative pressure tube. On the other side above the sputum storage tank, a telescopic tube is installed. The upper end of the telescopic tube penetrates through the upper end of the portable box and is connected to the sputum collection tube;

[0008] The sputum collection tube is connected through the inside of the sheath tube. A wing end for medical staff to hold is fixed outside the sheath tube. A holding convex block for medical staff to hold is provided outside the sputum collection tube. Flexible contacts that contact the inner wall of the patient's respiratory tract are equally spaced and fixed outside the end of the sputum collection tube. Sputum collection holes communicating with the internal drainage channel of the sputum collection tube are equally spaced and opened on the surface of the end of the sputum collection tube.

[0009] Preferably, the sputum storage tank is fixed by an elastic clip, and the elastic clip is fixedly installed inside the cavity. A rubber anti-slip pad is fixed on the contact surface between the elastic clip and the sputum storage tank.

[0010] Preferably, a cover is installed on the upper end of the sputum storage tank, a first sealing ring is provided on the outer edge of the bottom of the cover, which contacts the inner wall of the sputum storage tube, and a second sealing ring is sleeved on the bottom of the cover, and the second sealing ring contacts between the cover and the sputum storage tank.

[0011] Preferably, buckle blocks fixed to the outer edge of the upper end of the sputum storage tube are hinged on both sides of the cover plate, and the upper end of the cover plate is provided with two extension ends for installing the negative pressure tube and the telescopic tube.

[0012] Preferably, a block for the partition to be clamped is fixedly installed on the inner wall of the sputum storage tank, a hole for the lower end of the telescopic tube to pass through is opened in the middle of the partition, and mesh holes are also opened in the middle of the partition at equal intervals.

[0013] Preferably, a spray channel for circulating physiological saline or sodium bicarbonate solution is opened inside the wall of the sheath tube, and the spray channel passes through the portable box through the liquid injection tube and is connected to the liquid outlet end of the micro liquid pump. The negative pressure end of the micro liquid pump passes through the liquid collection tube to the docking end at the upper end of the liquid storage tank and extends to the interior of the liquid storage tank. A liquid infusion end is also provided at the upper end of the liquid storage tank, and the outside of the liquid infusion end and the liquid collection end are both threadedly connected to a sealing cover, and a reserved hole for the liquid collection tube to pass through is provided in the middle of the sealing cover for installing the liquid collection end.

[0014] Preferably, one side of the micro liquid pump passes through a conduit to the interior of the control box and is connected to the battery holder circuit. A battery is provided inside the battery holder, and a control panel is provided at the front end of the control box.

[0015] Preferably, the middle part of one side of the sputum collection tube is designed to be curved, and an air cavity for stretching the curve is provided inside the wall of the curve, and one side of the air cavity is connected to the air injection channel inside the wall of the sputum collection tube, and the air injection port of the air injection channel is installed with an air guide tube, and the other end of the air guide tube is connected to the injection balloon.

[0016] Preferably, a handle is fixed on the outside of the storage drawer for the user to pull out the storage drawer, and a magnetic block is fixed on the contact surface between the stored object and the cavity.

[0017] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0018] 1. In the present invention, a sheath tube for spraying physiological saline or sodium bicarbonate solution is sleeved outside the sputum collection tube, so that only one catheter insertion is required during the sputum collection process, without the need for multiple catheter insertions, improving the patient's comfort. Considering that during sputum collection, due to negative pressure sampling, after the sputum collection tube is inserted into the sputum suction position, the sputum suction holes on the sputum suction tube are likely to adsorb to the inner wall of the patient's respiratory tract, which is likely to cause damage to the inner wall of the respiratory tract. Therefore, the present invention has made improvements at the end of the sputum collection tube that contacts the inner wall of the patient's respiration, and designed multiple flexible contacts. This makes it possible that when the sputum collection tube contacts the mucous membrane of the inner wall of the patient's respiration, it will be separated by the soft flexible contacts, so that the end of the sputum collection tube will not scratch the mucous membrane of the inner wall of the respiratory tract, avoiding the phenomenon of injury to the inner wall of the respiratory tract. Inflammation may occur due to the damage to the inner wall of the respiratory tract, and since the sputum suction holes are also distributed at the end of the sputum collection tube, this makes it possible to suck out the sputum near the side wall of the end of the sputum collection tube in a timely manner;

[0019] 2. Considering that when the sputum collection tube is inserted into the patient's respiration for sputum collection, the sputum is distributed on the inner wall of the respiratory tract rather than in the middle of the respiratory tract. Therefore, when the sputum collection tube is located in the middle of the respiratory tract, the sputum suction effect is generally average, that is, the sputum suction tube is not close to the inner wall of the respiratory tract. Therefore, in the present invention, by releasing the injection balloon, the gas in the injection channel will be withdrawn into the interior of the injection balloon. At this time, the air cavity used to flatten the bent part of the sputum collection tube will contract, so that the bent part will no longer be forced to flatten. At this time, the middle part of the sputum collection tube will bend, making the end of the sputum collection tube contact the inner wall of the respiratory tract, which is beneficial for negative pressure sputum collection. When inserting the sheath tube, it should be ensured that the sputum collection tube is in a vertical state, that is, by pressing the injection balloon, the gas enters the air cavity through the injection channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The schematic diagrams in the specification forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0021] Figure 1 is the schematic diagram of the main cross-sectional part structure of the present invention;

[0022] Figure 2 is the schematic diagram of the combined part structure of the sheath tube in the present invention;

[0023] Figure 3 is the schematic diagram of the combined part structure of the sputum collection tube in the present invention;

[0024] Figure 4 is Figure 1 the enlarged schematic diagram of the part structure of part A in

[0025] Figure 5 is Figure 1 the enlarged schematic diagram of the part structure of part B in

[0026] Figure 6 isFigure 1 Schematic enlarged view of the structure of part C in

[0027] Figure 7 is Figure 1 Schematic enlarged view of the structure of part D in

[0028] Figure 8 is Figure 2 Schematic enlarged view of the structure of part E in

[0029] Figure 9 is Figure 3 Schematic enlarged view of the structure of part F in

[0030] In the figure:

[0031] 1. Portable box; 2. Micro liquid pump; 3. Control box; 4. Liquid storage tank; 5. Storage drawer; 6. Straps; 7. Fixed rings; 8. Sputum storage tank; 9. Negative pressure tube; 10. Adjustable sputum aspirator; 11. Medical one-way valve; 12. Telescopic tube; 13. Sputum collection tube; 14. Sheath tube; 15. Butterfly wing end; 16. Gripping bump; 17. Flexible contact; 18. Drainage channel; 19. Sputum collection hole; 20. Elastic clip; 21. Rubber anti-slip pad; 22. Cover plate; 23. First sealing ring; 24. Second sealing ring; 25. Buckle; 26. Extension end; 27. Block; 28. Partition; 29. Mesh hole; 30. Spraying channel; 31. Liquid injection tube; 32. Magnet; 33. Rehydration end; 34. Sealing cover; 35. Battery holder; 36. Control panel; 37. Air cavity; 38. Air injection channel; 39. Air duct; 40. Air injection balloon. Specific embodiments

[0032] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0033] Please refer to Figure 1 - Figure 9 , a sputum collection device for tuberculosis, including a portable box 1, an adjustable sputum aspirator 10, a sputum storage tank 8, a sheath tube 14 and a sputum collection tube 13. A cavity for placing the adjustable sputum aspirator 10, the micro liquid pump 2, the control box 3, the liquid storage tank 4 and the storage drawer 5 is provided inside the portable box 1, and fixed rings 7 for installing the straps 6 are fixed at both the upper and lower ends of the portable box 1:

[0034] On one side of the adjustable sputum aspirator 10, there is a sputum storage tank 8 for placing sputum. Above one side of the sputum storage tank 8, it is connected to the adjustable sputum aspirator 10 through a negative pressure tube 9. In the middle of the negative pressure tube 9, there is a medical one-way valve 11. On the other side above the sputum storage tank 8, a telescopic tube 12 is installed. The upper end of the telescopic tube 12 penetrates through the upper end of the portable box 1 and is communicated with the sputum extraction tube 13;

[0035] The sputum extraction tube 13 is connected through the inside of the sheath tube 14. On the outside of the sheath tube 14, there is a wing end 15 for medical staff to hold. On the outside of the sputum extraction tube 13, there is a holding bump 16 for medical staff to hold. At equal intervals on the outer end of the sputum extraction tube 13, there are flexible contact heads 17 that contact the inner wall of the patient's respiratory tract. At equal intervals on the surface of the end of the sputum extraction tube 13, there are sputum extraction holes 19 that communicate with the internal drainage channel 18 of the sputum extraction tube 13. Considering that when taking sputum, if the sputum is too viscous to be sucked out, it is necessary to pull out the sputum suction tube and inject normal saline or sodium bicarbonate solution into the patient's throat to dilute the sputum, and then insert the sputum suction tube for suction. This increases the number of times the sputum suction tube is inserted into the human body, increases the pain of the patient, and after the sputum suction tube is inserted into the sputum suction position, the sputum suction holes on the sputum suction tube are likely to adsorb to the inner wall of the patient's respiratory tract, which is likely to cause damage to the inner wall of the respiratory tract. In the present invention, a sheath tube 14 with a spray of normal saline or sodium bicarbonate solution is sleeved outside the sputum extraction tube 13, so that only one catheterization is required during the sputum extraction process, without the need to insert the tube multiple times, improving the comfort of the patient. And considering that during sputum extraction, due to negative pressure sampling, after the sputum extraction tube 13 is inserted into the sputum suction position, the sputum suction holes on the sputum suction tube are likely to adsorb to the inner wall of the patient's respiratory tract, which is likely to cause damage to the inner wall of the respiratory tract. Therefore, the present invention has made improvements to the contact end of the sputum extraction tube 13 with the patient's respiratory inner wall, and designed a plurality of flexible contact heads 17. This makes it possible that when the sputum extraction tube 13 contacts the mucous membrane of the patient's respiratory inner wall, it will be separated by the soft flexible contact heads 17. In this way, the end of the sputum extraction tube 13 will not cause scratches to the mucous membrane of the inner wall of the respiratory tract, avoiding the phenomenon of damage to the inner wall of the respiratory tract. Due to the inflammation caused by the damage to the inner wall of the respiratory tract, and because the sputum extraction holes 19 are also distributed at the end of the sputum extraction tube 13, this makes it possible to suck out the sputum near the side wall of the end of the sputum extraction tube 13 in a timely manner.

[0036] Please refer specifically to Figure 1 and Figure 7As shown, the sputum storage tank 8 is fixed by an elastic clip 20, and the elastic clip 20 is fixedly installed inside the cavity. A rubber anti-skid pad 21 is fixed on the contact surface between the elastic clip 20 and the sputum storage tank 8. Considering that medical staff may carry equipment to take sputum samples from elderly people with limited mobility in the community, there will be a certain amount of shaking when carrying the portable box 1. Therefore, the sputum storage tank 8 needs to be fixed to ensure that the sputum storage tank 8 will not fall due to shaking. In addition, when the elastic clip 20 fixes the sputum storage tank 8, the rubber anti-skid pad 21 on its inner wall can increase the friction between the elastic clip 20 and the surface of the sputum storage tube, thereby improving the fixing effect.

[0037] Please refer to Figure 1 and Figure 6 As shown, a cover plate 22 is installed at the upper end of the sputum storage tank 8, and a first sealing ring 23 is provided on the outer edge of the bottom of the cover plate 22, which contacts the inner wall of the sputum storage tube, and a second sealing ring 24 is sleeved on the bottom of the cover plate 22. The second sealing ring 24 contacts between the cover plate 22 and the sputum storage tank 8. Considering that the sputum storage tank 8 needs to store sputum samples obtained by medical staff, and after the sputum samples are tested, it is necessary to ensure that they will not leak to avoid infection. Therefore, when designing the sputum storage tank 8, the first sealing ring 23 and the second sealing ring 24 can be used to ensure the sealing between the cover plate 22 and the sputum storage tank 8.

[0038] Please refer to Figure 1 and Figure 6 As shown, both sides of the cover 22 are hinged with buckle blocks 25 fixed to the outer edge of the upper end of the sputum storage tube, and the upper end of the cover 22 is provided with two extension ends 26 for installing the negative pressure tube 9 and the telescopic tube 12. The provision of the buckle blocks 25 facilitates the removal or installation of the cover 22. It is only necessary to rotate the buckle blocks 25 to hook and contact the outer edge of the upper end of the sputum storage tank 8 to complete the fixation, and the cover 22 can be removed by placing it away.

[0039] Please refer to the figure in particular. A block 27 for the partition 28 to be engaged is fixedly mounted on the inner wall of the sputum storage tank 8. A clearance hole for the lower end of the telescopic tube 12 to pass through is provided in the middle of the partition 28. Mesh holes 29 are also provided at equal intervals in the middle of the partition 28. The partition 28 prevents the sputum sample in the sputum storage tank 8 from shaking due to the movement of medical staff. The presence of the partition 28 can block sputum with higher viscosity and prevent it from moving around in the sputum storage tank 8 due to the bumps. The multiple mesh holes 29 provided on the partition 28 ensure that the presence of the partition 28 does not affect the generation of negative pressure by the negative pressure tube 9.

[0040] Please refer to Figure 1 、 Figure 2 and Figure 4As shown, a spray channel 30 for the circulation of physiological saline or sodium bicarbonate solution is provided inside the wall of the sheath tube 14. The spray channel 30 passes through the portable box 1 through the liquid injection tube 31 and is communicated with the liquid outlet end of the micro liquid pump 2. The negative pressure end of the micro liquid pump 2 passes through the liquid extraction tube to the docking end at the upper end of the liquid storage tank 4 and extends into the interior of the liquid storage tank 4. A liquid replenishment end 33 is also provided at the upper end of the liquid storage tank 4. Sealing caps 34 are threadedly connected to the outside of both the liquid replenishment end 33 and the liquid extraction end. A reserved hole for the liquid extraction tube to pass through is provided in the middle of the sealing cap 34 for installing the liquid extraction end. Considering the situation that in the existing method of sputum aspiration for patients, it is necessary to first insert a tube to dilute the sputum, this step simplifies the subsequent ease of sputum aspiration. In order to improve the comfort of the patient, the present invention enables the patient to not need multiple catheter insertions, but only need to insert the sheath tube 14 once. The function of diluting sputum can be completed by using the spray channel 30 inside the sheath tube 14 in cooperation with the micro liquid pump 2. And the sputum aspiration tube 13 is inserted from inside the sheath tube 14, so there will be no discomfort caused by repeated catheter insertion.

[0041] Please refer particularly to Figure 1 As shown, one side of the micro liquid pump 2 passes through the control box 3 through a catheter and is electrically connected to the battery holder 35. A storage battery is provided inside the battery holder 35. And a control panel 36 is provided at the front end of the control box 3. By setting the control panel 36, it is convenient for medical staff to control the micro liquid pump 2. When designing the front cover of the portable box 1 in the later stage, an embedding groove can be reserved at the position of the control panel 36.

[0042] Please refer particularly to Figure 1 、 Figure 3 、 Figure 5 Figure and Figure 9 As shown, the middle part on one side of the sputum aspiration tube 13 is designed to be curved. An air cavity 37 for straightening the curve is provided inside the wall at the curved part. One side of the air cavity 37 is communicated with the air injection channel 38 inside the wall of the sputum aspiration tube 13. An air guide tube 39 is installed at the air injection port of the air injection channel 38, and the other end of the air guide tube 39 is communicated with the air injection balloon 40. Considering that when the sputum aspiration tube 13 is inserted into the patient's respiratory tract for sputum aspiration, the sputum is distributed on the inner wall of the respiratory tract rather than in the middle of the respiratory tract. Therefore, when the sputum aspiration tube 13 is located in the middle of the respiratory tract, the sputum aspiration effect is generally average, that is, the sputum aspiration tube is not close to the inner wall of the respiratory tract. Therefore, in the present invention, by loosening the air injection balloon 40, the gas in the air injection channel 38 will be withdrawn into the air injection balloon 40. At this time, the air cavity 37 for straightening the curved part of the sputum aspiration tube 13 will contract, so that the curved part will no longer be straightened by force. At this time, the middle part of the sputum aspiration tube 13 is curved, making the end of the sputum aspiration tube 13 contact the inner wall of the respiratory tract, which is conducive to negative pressure sputum aspiration. When inserting the sheath tube 14, it should be ensured that the sputum aspiration tube 13 is in a vertical state, that is, by pressing the air injection balloon 40, the gas enters the air cavity 37 through the air injection channel 38.

[0043] Please refer particularly to Figure 1As shown in the figure, a handle for the user to pull out the storage drawer 5 is fixed on the outer side of the storage drawer 5, and a magnetic block 32 is fixed on the contact surface between the storage object and the cavity. By arranging the magnetic block 32, a magnetic adsorption effect is achieved on the storage object.

[0044] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A sputum collection device for pulmonary tuberculosis, comprising a portable case (1), an adjustable sputum aspirator (10), a sputum storage tank (8), a sheath tube (14) and a sputum collection tube (13), characterized in that, The interior of the portable box (1) is provided with a cavity for placing an adjustable sputum suction device (10), a micro liquid pump (2), a control box (3), a liquid storage box (4), and a storage drawer (5). Fixed rings (7) for mounting a strap (6) are fixed at both the upper and lower ends of the portable box (1). A sputum storage tank (8) for storing sputum is provided on one side of the adjustable sputum suction device (10), and the upper side of the sputum storage tank (8) is connected to the adjustable sputum suction device (10) via a negative pressure tube (9), and a medical one-way valve (11) is provided in the middle of the negative pressure tube (9). A telescopic tube (12) is installed on the other side of the upper side of the sputum storage tank (8), and the upper end of the telescopic tube (12) passes through the upper end of the portable box (1) and is connected to the sputum collection tube (13); The sputum collecting tube (13) is connected to the inside of the sheath tube (14), and a butterfly wing end (15) for medical staff to grasp is fixed on the outside of the sheath tube (14). A gripping protrusion (16) for medical staff to grasp is provided on the outside of the sputum collecting tube (13). Flexible contacts (17) that contact the inner wall of the patient's respiratory tract are fixed at equal intervals on the outside of the end of the sputum collecting tube (13). Sputum collecting holes (19) that are connected to the internal drainage channel (18) of the sputum collecting tube (13) are opened at equal intervals on the surface of the end of the sputum collecting tube (13).

2. The sputum collection device for pulmonary tuberculosis according to claim 1, wherein: The sputum storage tank (8) is fixed by an elastic clip (20), and the elastic clip (20) is fixedly installed inside the cavity. A rubber anti-slip pad (21) is fixed on the contact surface between the elastic clip (20) and the sputum storage tank (8).

3. The sputum collection device for pulmonary tuberculosis according to claim 1, characterized in that: A cover plate (22) is installed at the upper end of the sputum storage tank (8), and a first sealing ring (23) is provided on the outer edge of the bottom of the cover plate (22) to contact the inner wall of the sputum storage tube, and a second sealing ring (24) is sleeved on the bottom of the cover plate (22), and the second sealing ring (24) is in contact between the cover plate (22) and the sputum storage tank (8).

4. The sputum collection device for pulmonary tuberculosis according to claim 3, characterized in that: Both sides of the cover plate (22) are hinged with buckle blocks (25) fixed to the outer edge of the upper end of the sputum storage tube, and the upper end of the cover plate (22) is provided with two extension ends (26) for installing the negative pressure tube (9) and the telescopic tube (12).

5. The sputum collection device for pulmonary tuberculosis according to claim 1, wherein: A block (27) for the partition (28) to be engaged is fixedly mounted on the inner wall of the sputum storage tank (8), a hole for the lower end of the telescopic tube (12) to pass through is provided in the middle of the partition (28), and mesh holes (29) are also provided at equal intervals in the middle of the partition (28).

6. The sputum collection device for tuberculosis according to claim 1, characterized in that: A spray channel (30) for circulating physiological saline or sodium bicarbonate solution is provided inside the wall of the sheath tube (14), and the spray channel (30) penetrates the portable box (1) through a liquid injection tube (31) and is connected to the liquid outlet end of the micro liquid pump (2). The negative pressure end of the micro liquid pump (2) penetrates the docking end at the upper end of the liquid storage tank (4) through a liquid collection tube and extends into the interior of the liquid storage tank (4). A liquid infusion end (33) is also provided at the upper end of the liquid storage tank (4), and the exteriors of the liquid infusion end (33) and the liquid collection end are both threadedly connected to a sealing cover (34). A reserved hole for the liquid collection tube to penetrate is provided in the middle of the sealing cover (34) for installing the liquid collection end.

7. The sputum collection device for pulmonary tuberculosis according to claim 1, characterized in that: One side of the micro liquid pump (2) penetrates through the control box (3) through a conduit and is electrically connected to the battery holder (35). An accumulator battery is provided inside the battery holder (35), and a control panel (36) is provided at the front end of the control box (3).

8. The sputum collection device for pulmonary tuberculosis according to claim 1, characterized in that: The middle part on one side of the sputum aspirating tube (13) is designed to be curved. An air cavity (37) for straightening the curve is provided inside the wall body at the curved part. One side of the air cavity (37) is communicated with an air injection channel (38) inside the wall body of the sputum aspirating tube (13). An air duct (39) is installed at the air injection port of the air injection channel (38), and the other end of the air duct (39) is communicated with an air injection balloon (40).

9. The sputum collection device for pulmonary tuberculosis according to claim 1, characterized in that: A handle for the user to pull out the storage drawer (5) is fixed on the outside of the storage drawer (5), and a magnet (32) is fixed on the contact surface between the storage object and the cavity body.

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