Device capable of quickly, simply and conveniently detecting amylase in tracheal secretion

Abstract

The invention relates to the technical field of medical equipment, in particular to a device capable of quickly, simply and conveniently detecting amylase in tracheal secretions, which comprises a sputum collection bottle, a negative pressure tube, a connecting tube, a three-way tube, a sputum suction tube and a detection piece, a bottle cap is arranged at an opening of the top of the sputum collection bottle, and a negative pressure opening and a sputum suction opening are formed in two sides of the top of the bottle cap; the negative pressure opening is connected with a negative pressure aspirator through a negative pressure pipe; the left end of the connecting pipe is communicated with the sputum suction opening, the right end of the connecting pipe is communicated with a top opening of the three-way pipe, and a side opening of the three-way pipe is communicated with the left end of the sputum suction pipe. And a bottom opening of the three-way pipe is communicated with the detection piece through a quick connecting mechanism. The bottom end of the connecting pipe is connected with the detection piece through the three-way pipe, when sputum negative pressure suction is carried out, part of sputum can enter the detection piece to detect the amylase concentration, if the amylase concentration is too high, aspiration of oropharyngeal secretions is caused by mistake, and complications such as aspiration pneumonia possibly occur, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a device capable of quickly and conveniently detecting amylase in tracheal secretions. Background Art

[0002] Endotracheal intubation is an important technology used in modern medicine to treat critically ill patients, especially in critical care, emergency, rehabilitation and other settings. By inserting a special endotracheal tube into the trachea, it can effectively relieve airway obstruction, maintain airway patency and clear respiratory secretions, thereby providing patients with good respiratory support. However, the incidence of aspiration in patients after endotracheal intubation is as high as over 90%, especially when sputum is not discharged smoothly or the patient fails to effectively clear oropharyngeal secretions. Aspirated secretions may cause serious complications such as aspiration pneumonia, especially for some patients with hidden aspiration. Traditional detection methods may not be able to detect their aspiration in time. Such patients often aspirate without obvious clinical symptoms, further increasing the risk of complications such as aspiration pneumonia, posing a great threat to the treatment and rehabilitation of patients.

[0003] In order to promptly identify and prevent complications caused by aspiration, the concentration of amylase in sputum is often used as a criterion in clinical practice. Amylase is an important biomarker, and its increased concentration in tracheal secretions usually indicates aspiration of oropharyngeal secretions. Therefore, timely and accurate detection of amylase levels in tracheal secretions is crucial for clinical assessment of aspiration risk and taking effective intervention measures.

[0004] Currently, the detection of amylase levels in tracheal secretions usually relies on sending samples to the laboratory for analysis, which is often cumbersome and time-consuming, and cannot meet the needs of rapid diagnosis in clinical settings such as emergency and ICU. In addition, most existing detection methods require the use of complex equipment and chemical reagents, which not only increases the difficulty of operation, but may also lead to detection delays and miss the best time for treatment.

[0005] Therefore, there is an urgent need for a device that can quickly and easily detect the level of amylase in tracheal secretions during sputum suction. The device should have the characteristics of real-time detection, convenient operation, and accurate results, so that when sputum is suctioned, it can quickly determine whether there is a risk of aspiration, and take appropriate treatment measures in time, so as to effectively prevent the occurrence of complications such as aspiration pneumonia and improve the treatment effect and prognosis of patients. Summary of the invention

[0006] The object of the present invention is to overcome the deficiencies of the prior art and provide a device that can quickly and simply detect amylase in tracheal secretions. By connecting a detection member to the bottom end of a connecting tube through a three-way tube, when performing sputum negative pressure suction, part of the sputum can enter the detection member to detect the concentration of its amylase. If the concentration of amylase is too high, it means aspiration of oropharyngeal secretions and may cause complications such as aspiration pneumonia, greatly improving the efficiency of the test.

[0007] To achieve the object of the present invention, the technical solution adopted by the present invention is as follows: The present invention discloses a device that can quickly and simply detect amylase in tracheal secretions, including a sputum collection bottle, a negative pressure tube, a connecting tube, a three-way tube, a sputum suction tube, and a detection member. The sputum collection bottle has a hollow cylindrical structure with an open top, and a bottle cap is provided at the open top thereof. Negative pressure ports and sputum suction ports are provided on both sides of the top of the bottle cap. The negative pressure port is connected to a negative pressure aspirator through a negative pressure tube; the connecting tube has an inverted "U" shape, its left end is communicated with the sputum suction port, the right end of the connecting tube is communicated with the top port of the three-way tube, and the side port of the three-way tube is communicated with the left end of the sputum suction tube; the bottom port of the three-way tube is communicated with the detection member through a quick connection mechanism.

[0008] The detection member includes a housing, a connecting tube, a sample addition part, a marker retention part, a medium part, and an absorption part. The housing has a hollow square structure, and a circular hole communicated with the bottom end of the connecting tube is provided on one side of the top thereof. The sample addition part is arranged in the housing, and the upper surface of the sample addition part contacts the bottom of the circular hole. The marker retention part is arranged below the sample addition part, and the left top of the marker retention part is connected to the right bottom of the sample addition part. The left top and right top of the medium part are respectively connected to the right bottom of the marker retention part and the left bottom of the absorption part; an anti-amylase antibody part is provided at the left top of the medium part; sputum can sequentially pass through the sample addition part, the marker retention part, the medium part, and the absorption part through capillary action.

[0009] A control part is provided at the right top of the medium part, and the bottom of the medium part is connected to the bottom of the inner cavity of the housing through an adhesive sheet.

[0010] The sample addition part is made of free glass fiber, cellulose, or polyethylene terephthalate.

[0011] The three-way pipe includes a top pipe, a bottom pipe, and a side pipe. The top of the top pipe is connected to the bottom of the right end of the connecting pipe. The left end of the side pipe is communicated with the outer wall of the top pipe, and the right end of the side pipe is communicated with the left end of the sputum suction pipe. The top of the bottom pipe is communicated with the bottom of the top pipe. The inner diameter of the bottom pipe is equal to the outer diameter of the top pipe, the outer diameter of the bottom pipe is smaller than the outer diameter of the top pipe, the inner and outer diameters of the bottom pipe are equal to the inner and outer diameters of the connecting pipe. A valve is provided on the bottom pipe, and the bottom end of the bottom pipe is communicated with the top end of the connecting pipe through the quick connection mechanism.

[0012] The quick connection mechanism includes an upper connection block, a lower connection block, a clamping member, and a clamping block. The upper connection block and the lower connection block are respectively communicated with the bottom end of the bottom pipe and the top end of the connecting pipe. The inner diameters of the upper connection block and the lower connection block are equal to the inner diameter of the bottom pipe. On both sides of the lower part of the outer wall of the upper connection block and on the front and back sides of the upper part of the outer wall of the lower connection block, the clamping members are respectively provided. The clamping member includes an inclined plate, a vertical plate, and a clamping plate. The inner ends of the inclined plates of the upper clamping member and the lower clamping member are respectively connected to both sides of the outer wall of the upper connection block and the front and back sides of the outer wall of the lower connection block. The outer end of the upper inclined plate is inclined downward and connected to the top end of the upper vertical plate. The bottom end of the upper vertical plate is vertically connected to the outer end of the upper clamping plate. The distance between the upper surface of the upper clamping plate and the lower surface of the upper connection block is equal to the thickness of the lower clamping block. The distance between the inner wall of the vertical plate and the outer walls of the upper and lower connection blocks is equal to the length of the clamping plate. The outer end of the lower inclined plate is inclined upward and connected to the bottom end of the lower vertical plate. The top end of the lower vertical plate is vertically connected to the outer end of the lower clamping plate. The distance between the lower surface of the lower clamping plate and the upper surface of the lower connection block is equal to the thickness of the upper clamping block. The clamping block has a circular arc structure with a square cross-section. The inner walls of the upper clamping block and the lower clamping block are respectively fixed to the lower part of the outer wall of the upper connection block and the upper part of the outer wall of the lower connection block. The upper clamping block is located on the left side of the upper clamping member, and the lower clamping block is located on the right side of the lower clamping member.

[0013] A limiting ring is provided on the lower surface of the inner ring of the upper connection block, and a limiting groove matching the shape of the limiting ring is provided on the upper surface of the inner ring of the lower connection block.

[0014] In the middle of the lower surface of the upper connection block, an upper semi-circular ring groove for connecting a sealing ring is provided. In the middle of the upper surface of the lower connection block, a lower semi-circular ring groove for placing the sealing ring is provided. The outer diameter of the sealing ring is larger than the outer diameter of the upper semi-circular ring groove.

[0015] An inverted right angle is formed above the left end of the upper clamping block; an inverted right angle is formed below the right end of the lower clamping block.

[0016] The beneficial effects of the present invention are as follows: (1) In the present invention, a detection member is connected to the bottom end of the connecting pipe through a three-way pipe. When performing negative pressure aspiration of sputum, part of the sputum can enter the detection member to detect the concentration of amylase in it. If the concentration of amylase is too high, it means aspiration of oropharyngeal secretions and may cause complications such as aspiration pneumonia, greatly improving the inspection efficiency.

[0017] (2) In the present invention, both the detection member and the sputum collection bottle are connected to the suction tube through a three-way pipe, which can avoid sputum leakage and reduce infection, especially for patients with diseases transmitted through the respiratory tract.

[0018] (3) The bottom port of the three-way pipe of the present invention is communicated with the detection member through a quick connection mechanism, which is convenient for the quick installation and disassembly of the detection member.

[0019] (4) The present invention has significant application potential in clinical environments such as emergency departments, intensive care rehabilitation, and ICUs, especially in aspects such as aspiration diagnosis, prognosis assessment of critically ill patients, and respiratory disease management; it can significantly shorten the process, improve clinical efficiency, and at the same time reduce the cost of single detection; the increasing global aging and the rising incidence of critical illnesses have promoted the demand for rapid detection tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 a partial enlarged view of Figure 3 is a schematic sectional view of the present invention; Figure 4 is Figure 3 a partial enlarged view of Figure 5 is a schematic structural diagram of the connection mechanism in the present invention.

[0021] In the figure: 1 sputum collection bottle, 2 negative pressure tube, 3 connecting pipe, 4 three-way pipe, 41 top pipe, 42 bottom pipe, 43 side pipe, 44 valve, 5 suction tube, 6 detection member, 61 housing, 62 connecting pipe, 63 sample addition part, 64 marker holding part, 65 medium part, 66 absorption part, 67 round hole, 68 anti-amylase antibody part, 69 control part, 70 adhesive sheet, 7 bottle cap, 71 negative pressure port, 72 suction port, 8 quick connection mechanism, 81 upper connection block, 82 lower connection block, 83 clamping member, 831 inclined plate, 832 vertical plate, 833 clamping plate, 84 clamping block, 85 limiting ring, 86 limiting groove, 87 sealing ring, 88 upper semi-circular groove, 89 lower semi-circular groove. DETAILED DESCRIPTION OF THE INVENTION

[0022] The present invention will be further described below: Please refer to Figures 1-5 , The present invention discloses a device for quickly and simply detecting amylase in tracheal secretions, which includes a sputum collection bottle 1, a negative pressure tube 2, a connecting tube 3, a three-way tube 4, a sputum suction tube 5 and a detection component 6. The sputum collection bottle 1 has a hollow cylindrical structure with an open top, and a bottle cap 7 is provided at the open top thereof. Negative pressure ports 71 and sputum suction ports 72 are provided on both sides of the top of the bottle cap 7. The negative pressure port 71 is connected to a negative pressure aspirator through the negative pressure tube 2; the connecting tube 3 has an inverted "U" shape, and its left end is communicated with the sputum suction port 72, and the right end of the connecting tube 3 is communicated with the top port of the three-way tube 4. The side port of the three-way tube 4 is communicated with the left end of the sputum suction tube 5; the bottom port of the three-way tube 4 is communicated with the detection component 6 through a quick connection mechanism 8. By connecting the detection component 6 through the three-way tube 4 at the bottom end of the connecting tube 3, when negative pressure suction of sputum is carried out, part of the sputum can enter the detection component 6 to detect the concentration of its amylase. If the concentration of amylase is too high, it means aspiration of oropharyngeal secretions and possible occurrence of complications such as aspiration pneumonia; the bottom port of the three-way tube 4 is communicated with the detection component 6 through a quick connection mechanism 8, which is convenient for the quick installation and disassembly of the detection component 6.

[0023] Further, the detection member 6 includes a housing 61, a connecting pipe 62, a sample adding portion 63, a marker holding portion 64, a medium portion 65 and an absorption portion 66. The housing 61 has a hollow square structure, and a round hole 67 communicating with the bottom end of the connecting pipe 62 is provided on one side of the top thereof. The sample adding portion 63 is arranged inside the housing 61, and the upper surface of the sample adding portion 63 is in contact with the bottom of the round hole 67. The marker holding portion 64 is arranged below the sample adding portion 63, and the top left end of the marker holding portion 64 is connected to the bottom right end of the sample adding portion 63. The top left end and the top right end of the medium portion 65 are respectively connected to the bottom right end of the marker holding portion 64 and the bottom left end of the absorption portion 66. An anti-amylase antibody portion 68 is provided at the top left end of the medium portion 65. The anti-amylase antibody is fixed on the medium portion 65 in a strip shape, and the colloidal gold labeled reagent is adsorbed on the marker holding portion 64. Sputum reaches the sample adding portion 63 through the suction tube 5 via the three-way pipe 4 and the connecting pipe 62 under negative pressure, moves forward by capillary action, reacts with each other after dissolving the colloidal gold labeled reagent on the marker holding portion 64, and then reaches the medium portion 65 and binds to the anti-amylase antibody in the anti-amylase antibody portion 68 and is intercepted, gathering in the anti-amylase antibody portion 68. If the concentration of amylase in the tracheal secretion is relatively high, such as exceeding 1,685 U / L, after the antibody binds to the amylase, the substrate will have a color reaction, and the color depth is proportional to the amylase concentration, so it can be judged that the sputum amylase level of the patient is relatively high, indicating aspiration of oropharyngeal secretions and possible complications such as aspiration pneumonia. A control portion 69 is provided at the top right end of the medium portion 65. The bottom of the medium portion 65 is connected to the bottom of the inner cavity of the housing 61 through an adhesive sheet 70. The anti-gold label antibody package is arranged at the control portion 69. Using the principle of specific binding immune reaction of antigen and antibody, an antibody-detected antigen-gold label antibody complex is formed at the detection line, and an anti-gold label antibody-gold label antibody complex is formed at the control line to ensure the effectiveness of the operation and avoid false negative results.

[0024] Result description Positive: Red reaction lines appear successively at the upper and lower ends of the test strip.

[0025] Under the traction of the water-absorbing material, the sputum antigen to be detected is added to the sample adding portion 63, moves forward by capillary action, reacts with each other after dissolving the colloidal gold labeled reagent on the marker holding portion 64, and then reaches the medium portion 65 and binds to the anti-amylase antibody in the anti-amylase antibody portion 68 and is intercepted. The sputum antigen to be detected binds to the anti-amylase antibody here, forming a gold label complex with two antibodies binding to one antigen (double antibody sandwich). Because gold particles are deposited here, the detection line shows red. When the gold label antibody that has not bound to the antigen reaches the control line, it binds to the "anti-gold label antibody", so the control line also shows red.

[0026] Negative: Only one red control line appears at the upper end of the test strip.

[0027] There is no antigen to be detected in the specimen to be tested. Only the gold-labeled antibody moves upward on the test strip and binds to the antibody at the control line, causing the gold particles to deposit here and show red.

[0028] Invalid: No red control line appears at both the upper and lower ends of the test strip, indicating that the test fails or the test strip is invalid.

[0029] Furthermore, the sample adding part 63 is made of free glass fiber, cellulose or polyethylene terephthalate, ensuring that sputum can pass through the sample adding part 63, the marker holding part 64, the medium part 65 and the absorption part 66 in sequence by capillary action to complete the detection of amylase in sputum.

[0030] Furthermore, the three-way pipe 4 includes a top pipe 41, a bottom pipe 42 and a side pipe 43. The top of the top pipe 41 is connected to the bottom of the right end of the connecting pipe 3. The left end of the side pipe 43 communicates with the outer wall of the top pipe 41, and the right end of the side pipe 43 communicates with the left end of the sputum suction pipe 5. The top of the bottom pipe 42 communicates with the bottom of the top pipe 41. The inner diameter of the bottom pipe 42 is equal to the outer diameter of the top pipe 41, and the outer diameter of the bottom pipe 42 is smaller than the outer diameter of the top pipe 41, capable of matching the inner diameter of the round hole 67. The inner and outer diameters of the bottom pipe 42 are equal to the inner and outer diameters of the connecting pipe 62. A valve 44 is provided on the bottom pipe 42. The bottom end of the bottom pipe 42 is connected to the top end of the connecting pipe 62 through the quick connection mechanism 8. By setting the valve 44 on the bottom pipe 42, when performing negative pressure suction of sputum, opening the valve 44 can divert part of the sputum into the detection part 6 for detection. When there are enough sputum samples for detection in the connecting pipe 62, closing the valve 44 can perform normal sputum suction. Preferably, the connecting pipe 62 can be set as a transparent pipe to facilitate medical staff to observe the amount of sputum in the connecting pipe 62.

[0031] Furthermore, the quick connection mechanism 8 includes an upper connection block 81, a lower connection block 82, a clamping member 83, and a clamping block 84. The upper connection block 81 and the lower connection block 82 are respectively communicated with the bottom end of the bottom pipe 42 and the top end of the connecting pipe 62. The inner diameters of the upper connection block 81 and the lower connection block 82 are equal to the inner diameter of the bottom pipe 42. On both sides of the lower part of the outer wall of the upper connection block 81 and on the front and back sides of the upper part of the outer wall of the lower connection block 82, the clamping members 83 are respectively provided. The clamping member 83 includes an inclined plate 831, a vertical plate 832, and a clamping plate 833. The inner ends of the inclined plates 831 of the upper clamping member 83 and the lower clamping member 83 are respectively connected to both sides of the outer wall of the upper connection block 81 and the front and back sides of the outer wall of the lower connection block 82. The outer end of the upper inclined plate 831 is inclined downward and connected to the top end of the upper vertical plate 832. The bottom end of the upper vertical plate 832 is perpendicularly connected to the outer end of the upper clamping plate 833. The distance between the upper surface of the upper clamping plate 833 and the lower surface of the upper connection block 81 is equal to the thickness of the lower clamping block 84. The distance between the inner wall of the vertical plate 832 and the outer walls of the upper and lower connection blocks is equal to the length of the clamping plate 833. The outer end of the lower inclined plate 831 is inclined upward and connected to the bottom end of the lower vertical plate 832. The top end of the lower vertical plate 832 is perpendicularly connected to the outer end of the lower clamping plate 833. The distance between the lower surface of the lower clamping plate 833 and the upper surface of the lower connection block 82 is equal to the thickness of the upper clamping block 84. The clamping block 84 has a circular arc structure with a square cross-section. The inner walls of the upper clamping block 84 and the lower clamping block 84 are respectively fixed to the lower part of the outer wall of the upper connection block 81 and the upper part of the outer wall of the lower connection block 82. The upper clamping block 84 is located on the left side of the upper clamping member 83, and the lower clamping block 84 is located on the right side of the lower clamping member 83. When the bottom pipe 42 needs to be quickly connected to the connecting pipe 62, first, the lower surface of the upper connection block 81 is brought into contact with the upper surface of the lower connection block 82. Then, the lower connection block 82 is rotated clockwise, and the lower clamping block 84 can be inserted between the upper surface of the upper clamping plate 833 and the lower surface of the upper clamping block 84. The upper clamping block 84 can be inserted between the lower surface of the lower clamping plate 833 and the upper surface of the lower clamping block 84 to complete the quick connection and clamping. When disassembly is required, rotate counterclockwise.

[0032] Furthermore, a limiting ring 85 is provided on the lower surface of the inner ring of the upper connection block 81, and a limiting groove 86 matching the shape of the limiting ring 85 is provided on the upper surface of the inner ring of the lower connection block 82, which plays a role of positioning and guiding. After the user inserts the limiting ring 85 into the limiting groove 86, only by rotating the lower connection block 82 clockwise can the clamping of the clamping member 83 and the clamping block 84 be completed.

[0033] Further, a upper semi-circular ring groove 88 for connecting a sealing ring 87 is provided in the middle of the lower surface of the upper connecting block 81, and a lower semi-circular ring groove 89 for placing the sealing ring 87 is provided in the middle of the upper surface of the lower connecting block 82. The outer diameter of the sealing ring 87 is slightly larger than the outer diameter of the upper semi-circular ring groove 88, so that the upper connecting block 81 and the lower connecting block 82 are in a tension state after connection, with better sealing performance, and the clamping between the clamping block 84 and the clamping member 83 is not easily disengaged.

[0034] Further, a chamfer is formed above the left end of the upper clamping block 84; a chamfer is formed below the right end of the lower clamping block 84. Since the outer diameter of the sealing ring 87 is slightly larger than the outer diameter of the annular groove formed by the upper and lower semi-circular ring grooves, the upper and lower connecting blocks cannot be completely fitted when they come into contact. By setting the chamfers, it is convenient for the clamping between the clamping block 84 and the clamping member 83.

[0035] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or any direct or indirect application in related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A device for quickly and easily detecting amylase in tracheal secretions, characterized in that: The invention comprises a sputum collecting bottle (1), a negative pressure tube (2), a connecting tube (3), a three-way tube (4), a sputum suction tube (5) and a detection element (6); the sputum collecting bottle (1) is a hollow cylindrical structure with an open top, a bottle cap (7) is provided at the top opening, negative pressure ports (71) and sputum suction ports (72) are provided on both sides of the top of the bottle cap (7), and the negative pressure port (71) is connected to a negative pressure suction device via a negative pressure tube (2); The connecting tube (3) is in an inverted "U"-shaped structure, the left end of which is connected to the sputum suction port (72), the right end of the connecting tube (3) is connected to the top port of the three-way tube (4), and the side port of the three-way tube (4) is connected to the left end of the sputum suction tube (5); the bottom port of the three-way tube (4) is connected to the detection member (6) via a quick connection mechanism (8).

2. A device for quickly and easily detecting amylase in tracheal secretions according to claim 1, characterized in that: The detection element (6) comprises a shell (61), a connecting tube (62), a sample adding portion (63), a marker holding portion (64), a medium portion (65) and an absorption portion (66); the shell (61) is a hollow square structure, and a circular hole (67) communicating with the bottom end of the connecting tube (62) is provided on one side of the top thereof; the sample adding portion (63) is arranged in the shell (61), and the upper surface of the sample adding portion (63) contacts the bottom of the circular hole (67); the marker holding portion (64) is arranged on the sample Below the adding portion (63), the left top of the marker holding portion (64) is connected to the right bottom of the sample adding portion (63), and the left top and right top of the medium portion (65) are respectively connected to the right bottom of the marker holding portion (64) and the left bottom of the absorption portion (66); an anti-amylase antibody portion (68) is provided at the left end of the top of the medium portion (65); sputum can pass through the sample adding portion (63), the marker holding portion (64), the medium portion (65) and the absorption portion (66) in sequence through capillary action.

3. A device for quickly and easily detecting amylase in tracheal secretions according to claim 2, characterized in that: A control portion (69) is provided at the top right end of the medium portion (65), and the bottom of the medium portion (65) is connected to the bottom of the inner cavity of the shell (61) via an adhesive sheet (70).

4. A device for quickly and easily detecting amylase in tracheal secretions according to claim 3, characterized in that: The sample adding part (63) is made of free glass fiber, cellulose or polyethylene terephthalate.

5. A device for quickly and easily detecting amylase in tracheal secretions according to claim 4, characterized in that: The three-way pipe (4) comprises a top pipe (41), a bottom pipe (42) and a side pipe (43); the top of the top pipe (41) is connected to the bottom of the right end of the connecting pipe (3); the left end of the side pipe (43) is connected to the outer wall of the top pipe (41); the right end of the side pipe (43) is connected to the left end of the suction pipe (5); the top of the bottom pipe (42) is connected to the bottom end of the top pipe (41); the inner diameter of the bottom pipe (42) is equal to the outer diameter of the top pipe (41); the outer diameter of the bottom pipe (42) is smaller than the outer diameter of the top pipe (41); the inner and outer diameters of the bottom pipe (42) are equal to the inner and outer diameters of the connecting pipe (62); a valve (44) is provided on the bottom pipe (42); the bottom end of the bottom pipe (42) is connected to the top end of the connecting pipe (62) via the quick connection mechanism (8).

6. A device for quickly and easily detecting amylase in tracheal secretions according to claim 5, characterized in that: The quick connection mechanism (8) comprises an upper connection block (81), a lower connection block (82), a clamping piece (83) and a clamping block (84); the upper connection block (81) and the lower connection block (82) are respectively connected to the bottom end of the bottom tube (42) and the top end of the connection tube (62); the inner diameters of the upper connection block (81) and the lower connection block (82) are equal to the inner diameter of the bottom tube (42); the clamping pieces (83) are respectively provided on both sides of the lower side of the outer wall of the upper connection block (81) and on the front and rear sides of the upper side of the outer wall of the lower connection block (82); the clamping pieces (83) are respectively provided on both sides of the lower ...4) are respectively provided on both sides of the lower side of the outer wall of the upper connection block (81) and on the front and rear sides of the upper side of the outer wall of the lower connection block (82); the clamping pieces (83) are respectively provided on both sides of the lower side of the outer wall of the lower connection block (82). The upper connecting block (81) and the lower connecting block (82) are connected to each other at the inner ends of the inclined plate (831) and the inclined plate (831) of the upper connecting block (83) and the lower connecting block (82), respectively. The outer end of the upper inclined plate (831) is arranged to be tilted downward and connected to the top of the upper vertical plate (832). The bottom end of the upper vertical plate (832) is vertically connected to the outer end of the upper connecting plate (833). The distance between the upper surface of the clamping plate (833) and the lower surface of the upper connecting block (81) is equal to the thickness of the clamping block (84) below, and the distance between the inner wall of the vertical plate (832) and the outer walls of the upper and lower connecting blocks is equal to the length of the clamping plate (833); the outer end of the lower inclined plate (831) is inclined upward and connected to the bottom end of the lower vertical plate (832), the top end of the lower vertical plate (832) is vertically connected to the outer end of the lower clamping plate (833), and the lower clamping plate (83 3) and the upper surface of the lower connecting block (82) are equal to the thickness of the upper clamping block (84); the clamping block (84) is an arc-shaped structure with a square cross-section, the inner wall of the upper clamping block (84) and the inner wall of the lower clamping block (84) are respectively fixed to the lower side of the outer wall of the upper connecting block (81) and the upper side of the outer wall of the lower connecting block (82), the upper clamping block (84) is located on the left side of the upper clamping piece (83), and the lower clamping block (84) is located on the right side of the lower clamping piece (83).

7. A device for quickly and easily detecting amylase in tracheal secretions according to claim 6, characterized in that: A limiting ring (85) is provided on the lower surface of the inner ring of the upper connecting block (81), and a limiting groove (86) matching the shape of the limiting ring (85) is provided on the upper surface of the inner ring of the lower connecting block (82).

8. A device for quickly and easily detecting amylase in tracheal secretions according to claim 7, characterized in that: An upper semicircular annular groove (88) for connecting a sealing ring (87) is provided in the middle of the lower surface of the upper connecting block (81), and a lower semicircular annular groove (89) for accommodating the sealing ring (87) is provided in the middle of the upper surface of the lower connecting block (82), wherein the outer diameter of the sealing ring (87) is greater than the outer diameter of the upper semicircular annular groove (88).

9. A device for quickly and easily detecting amylase in tracheal secretions according to claim 8, characterized in that: The upper left end of the upper clamping block (84) forms a chamfered right angle; the lower right end of the lower clamping block (84) forms a chamfered right angle.

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