Disposable respiratory tract secretion suction joint for sputum suction pump

Abstract

The invention discloses a disposable respiratory tract secretion suction connector for a sputum suction pump, relates to the field of sputum suction equipment, and aims to solve the problems that the operation risk of medical staff is increased and the treatment efficiency is affected due to the fact that an existing suction connector lacks a negative pressure adjusting function and is unstable in pipeline connection. One end of the connector is fixedly connected with a clamping head, the clamping head is sleeved with a negative pressure pipe, the periphery of the negative pressure pipe is matched with a reinforcing sleeve, the middle of the connector is fixedly connected with an exhaust pipe, an exhaust hole communicated with the connector is formed in the exhaust pipe, a flow deflector is arranged on one side of the exhaust hole, a cover cap is matched outside the exhaust pipe, and a through hole is formed in the side edge of the exhaust pipe. The sputum suction tube has the advantages that the flow guide plate is matched with the through hole, the airflow direction is optimized, secretion is prevented from splashing outwards, and meanwhile negative pressure in the sputum suction tube is flexibly adjusted through the adjusting ball.

Description

Technical Field

[0001] The present invention relates to the technical field of sputum suction devices, and in particular to a disposable respiratory secretion suction adapter for a sputum suction pump. Background Art

[0002] In the field of clinical medical care, the nursing work for critically ill patients is of crucial importance. Among them, respiratory secretion suction is a key and common operation. This operation plays an irreplaceable role in maintaining the patency of the patient's respiratory tract, ensuring the normal respiratory function of the patient, and preventing complications such as respiratory tract infections.

[0003] As the core device for respiratory secretion suction, a sputum suction pump needs to use a suction adapter during operation to connect with the sputum suction tube and the negative pressure pipeline, so as to build a complete suction system to ensure that the secretions in the patient's respiratory tract can be effectively pumped out.

[0004] However, there are some relatively prominent problems in the design of the existing suction adapters on the market. On the one hand, most of the existing suction adapters adopt a design method with a fixed pipe diameter. In actual clinical operations, the viscosity of sputum in different patients varies greatly, and the airway pressure of the patient itself also varies due to factors such as the condition and individual differences. However, this suction adapter with a fixed pipe diameter cannot flexibly adjust the negative pressure intensity according to the real-time changes in sputum viscosity or the patient's airway pressure. When medical staff find that they need to adjust the negative pressure during actual operation, they have to interrupt the ongoing suction operation to replace the adapters of different specifications. This process not only wastes precious treatment time and reduces the treatment efficiency, but also may cause the remaining of secretions in the patient's respiratory tract during the interruption of operation and the replacement of the adapter, increasing the risk of airway blockage, and may also cause damage to the patient's respiratory mucosa, leading to a series of adverse consequences.

[0005] On the other hand, the exhaust pipe and the connector of the existing suction adapter mostly adopt a vertical straight-through structure. During the exhaust process, due to the design characteristics of this structure, high-speed air flow is likely to carry respiratory secretions and splash out. This not only pollutes the surrounding environment, but more importantly, greatly increases the risk of cross-infection, posing a potential threat to the health of medical staff and other patients. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a disposable respiratory secretion suction adapter for a sputum suction pump, which effectively solves the problems that the existing suction adapter lacks negative pressure adjustment function and the pipeline connection is unstable, thus increasing the operation risk of medical staff and affecting the treatment efficiency.

[0007] To achieve the above object, the present invention provides the following technical solutions: The present invention includes a connector, one end of the connector is fixedly connected with a chuck, a negative pressure tube is sleeved on the chuck, a reinforcing sleeve is fitted around the negative pressure tube, a exhaust pipe is fixedly connected to the middle of the connector, an exhaust hole communicating with the connector is provided in the exhaust pipe, a flow guiding piece is provided on one side of the exhaust hole, the flow guiding piece is fixedly connected to the inner cavity of the connector, a cap is fitted outside the exhaust pipe, a through hole is formed on the side of the exhaust pipe, a lumen adjusting assembly is fitted in the through hole, the lumen adjusting assembly is hermetically connected to the connector, and a sputum suction tube is fixedly connected to the other end of the connector.

[0008] Preferably, the lumen adjusting assembly includes an elastic sealing sleeve, the elastic sealing sleeve is fixedly connected to the outer wall of the connector, the elastic sealing sleeve is fixedly connected to the connector, an adjusting ball is fixedly connected to the elastic sealing sleeve, and the diameter of the adjusting ball is adapted to the diameter of the through hole.

[0009] Preferably, anti-slip lines are provided on the periphery of the elastic sealing sleeve, and the depth of the anti-slip lines is 0.5-1 mm.

[0010] Preferably, the central axis of the exhaust pipe forms an angle of 15-30° with the central axis of the connector, the inclination angle of the flow guiding piece is the same as the inclination angle of the exhaust pipe, and a baffle is fixedly connected to the upper end of the exhaust pipe.

[0011] Preferably, a first connecting band is fixedly connected between the baffle and the cap, the baffle is horizontally placed, the horizontal projection area of the baffle is larger than the cross-sectional area of the exhaust pipe, and the through hole is of an L-shaped structure.

[0012] Preferably, the reinforcing sleeve includes a collar, a second connecting band is fixedly connected to the collar, the other end of the second connecting band is fixedly connected to a fixing ring, and adjusting lock catches are provided at both ends of the fixing ring.

[0013] Preferably, the adjusting lock catch includes a fixing block, the fixing block is fixedly connected to one end of the fixing ring, an adjusting worm is rotatably connected to the fixing block, and a helical tooth groove cooperating with the adjusting worm is provided at the other end of the fixing ring.

[0014] Preferably, the adjusting lock catch further includes a limiting block, the limiting block is fixedly connected to one end of the fixing ring, a ratchet hole is provided in the limiting block, and a ratchet bar cooperating with the ratchet hole is fixedly connected to the other end of the fixing ring.

[0015] Preferably, a push plate is provided on the side of the ratchet bar, the push plate is fixedly connected to the fixing ring, and an anti-slip protrusion is provided at the end of the push plate.

[0016] The outstanding advantages of the present invention compared with the prior art: The present invention is provided with a flow guide vane on the side of the exhaust hole. The flow guide vane is installed obliquely to optimize the air flow direction through the inclination angle of the flow guide vane, reduce turbulence, and at the same time prevent the secretion from splashing out at the position of the exhaust hole when moving with the air flow, thus avoiding cross-infection.

[0017] The present invention realizes dynamic and stepless adjustment of negative pressure by adjusting the opening degree of the inner lumen of the elastic sealing sleeve and the adjusting ball adjusting hole connector, can flexibly adjust the negative pressure during use, reduce the complex process of disassembling and replacing the connector, and improve the applicability and suction efficiency of the device. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0020] Figure 3 It is a schematic diagram of the cap connection structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the axial sectional structure of the connector of the present invention.

[0022] Figure 5 It is a schematic diagram of the front sectional structure of the connector of the present invention.

[0023] Figure 6 It is a schematic diagram of the lumen adjustment assembly of the present invention.

[0024] Figure 7 It is a schematic diagram of the adjustment lock connection structure in Embodiment 1 of the present invention.

[0025] Figure 8 It is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0026] Figure 9 It is a schematic diagram of the adjustment lock connection structure in Embodiment 2 of the present invention.

[0027] Reference numerals in the figures: 1. Connector; 2. Chuck; 3. Negative pressure tube; 4. Reinforcing sleeve; 401. Collar; 402. Second connecting band; 403. Fixed ring; 404. Adjustment lock; 4041. Fixed block; 4042. Adjusting worm; 4043. Helical tooth groove; 4044. Limiting block; 4045. Ratchet hole; 4046. Ratchet rack; 4047. Push plate; 5. Exhaust pipe; 6. Exhaust hole; 7. Flow guide vane; 8. Cap; 9. Through hole; 10. Lumen adjustment assembly; 1001. Elastic sealing sleeve; 1002. Adjusting ball; 1003. Anti-slip pattern; 11. Suction tube; 12. Baffle; 13. First connecting band. Detailed Description of the Invention

[0028] The following clearly and completely describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] Please refer to the attached Figures 1-7 , a disposable respiratory secretion aspiration adapter for a sputum suction pump in this embodiment: including a connector 1, one end of the connector 1 is fixedly connected with a chuck 2, a negative pressure tube 3 is sleeved on the chuck 2, a reinforcing sleeve 4 is fitted around the negative pressure tube 3, an exhaust pipe 5 is fixedly connected to the middle of the connector 1, an exhaust hole 6 communicating with the connector 1 is provided in the exhaust pipe 5, a flow guide piece 7 is provided on one side of the exhaust hole 6, the flow guide piece 7 is fixedly connected to the inner cavity of the connector 1, a cap 8 is fitted outside the exhaust pipe 5, a through hole 9 is opened on the side of the exhaust pipe 5, a lumen adjusting assembly 10 is fitted in the through hole 9, the lumen adjusting assembly 10 is hermetically connected to the connector 1, and a sputum suction tube 11 is fixedly connected to the other end of the connector 1.

[0031] The connector 1 and the chuck 2 are integrally injection-molded from medical-grade polypropylene material. There is an interference fit between the connector 1 and the suction tube 11. The suction tube 11 is sleeved on the connector 1, and the two are prevented from falling off by friction. Similarly, there is also an interference fit between the chuck 2 and the negative pressure tube 3, so that the chuck 2 can provide more friction for the negative pressure tube 3 and reduce the risk of falling off. The length of the connector 1 is 50 mm, the inner diameter is 8 mm, and the outer diameter is 12 mm. The front end of the chuck 2 is a stepped groove composed of multiple frustum structures. The diameter of the right end of the chuck 2 is smaller than that of the left end. The minimum diameter of the chuck 2 is the same as the inner diameter of the negative pressure tube 3, which facilitates the insertion of the chuck 2 into the negative pressure tube 3. The other end of the negative pressure tube 3 is connected to a negative pressure pump. The negative pressure generated by the negative pressure pump acts on the inside of the connector 1 through the negative pressure tube 3, so as to perform suction work on the patient's respiratory tract through the connector 1 and the suction tube 11. The exhaust pipe 5 of the connector 1 is located above the connector 1. In the existing design, the exhaust pipe 5 is vertically distributed with respect to the connector 1, and the exhaust holes 6 of the exhaust pipe 5 are at a 90-degree intersection in the inner cavity of the connector 1. Different from the installation method of the existing exhaust pipe 5, in this application, the exhaust pipe 5 is inclined with respect to the connector 1. The exhaust pipe 5 is made of ABS material, and its outer diameter is smaller than the outer diameter of the connector 1, preferably 10 mm. The deflector 7 is located on the side of the intersection of the exhaust hole 6 and the inner cavity of the connector 1. The inclination of the deflector 7 is the same as the inclination of the exhaust pipe 5. At the same time, the deflector 7 is fixed above the inner cavity of the connector 1. The vertical height of the deflector 7 is less than half of the inner diameter of the connector 1, which can prevent the deflector 7 from being too large and causing sputum to block at the deflector 7. The deflector 7 is located on the side close to the suction tube 11, and the left side of the deflector 7 is a cylindrical structure to ensure that the sputum can pass smoothly after contacting it.

[0032] The central axis of the exhaust pipe 5 forms an angle of 15-30° with the central axis of the connector 1. The inclination angle of the deflector 7 is the same as the inclination angle of the exhaust pipe 5. A baffle 12 is fixedly connected to the upper end of the exhaust pipe 5.

[0033] As Figure 4 and Figure 5As shown, the flow guide vane 7 is an arc-shaped thin sheet, whose radius of curvature is the same as that of the exhaust pipe 5. The flow guide vane 7 is injection-molded from transparent ABS and is welded and fixed at the intersection of the inner cavity of the connector 1 and the exhaust hole 6. Its inclination angle is the same as that of the exhaust pipe 5. The included angle between the central axis of the exhaust pipe 5 and the central axis of the connector 1 is 20°. The arc surface of the flow guide vane 7 guides the high-speed air flow to the lower part of the exhaust hole 6. When the air flow carries sputum particles, the inclined surface of the flow guide vane 7 forces the particles to impact the flow guide vane 7 and then fall back to the sputum suction tube 11, blocking the cross-infection path; Further, a baffle 12 is horizontally placed at the upper end of the exhaust pipe 5. The cross-sections of the baffle 12 and the cap 8 are both elliptical. The horizontal projection area of the baffle 12 is larger than the cross-sectional area of the exhaust pipe 5, ensuring that the baffle 12 completely covers the cross-section of the exhaust pipe 5 at the upper end of the exhaust pipe 5. The exhaust hole 6 is an L-shaped structure, and the included angle at the bent part of the exhaust hole 6 is equal to the included angle between the baffle 12 and the exhaust pipe 5. Through the bent structure of the exhaust hole 6, sputum splashing outwards is avoided, and at the same time, the exhaust hole 6 can be used normally.

[0034] The cap 8 is made of silicone material, and there is a spherical protrusion on the cap 8. When the cap 8 cooperates with the baffle 12, the spherical protrusion can enter the orifice of the exhaust hole 6 to seal the exhaust hole 6, avoiding air leakage of the exhaust hole 6 from affecting the negative pressure situation in the sputum suction tube 11. The right ends of the cap 8 and the baffle 12 are connected by a first connecting band 13. The first connecting band 13 is made of a flexible material, which does not affect the flipping of the cap 8. At the same time, under the action of the first connecting band 13, the cap 8 is connected to the connector 1 after being removed, avoiding the loss of the cap 8.

[0035] The lumen adjustment assembly 10 includes an elastic sealing sleeve 1001. The elastic sealing sleeve 1001 is fixedly connected to the outer wall of the connector 1. The elastic sealing sleeve 1001 is fixedly connected to the connector 1. An adjustment ball 1002 is fixedly connected to the elastic sealing sleeve 1001, and the diameter of the adjustment ball 1002 is adapted to the diameter of the through hole 9.

[0036] The lumen adjustment assembly 10 is used to adjust the lumen at the air inlet end of the sputum suction tube 11, control the amount of air suctioned by the negative pressure tube 3 on the sputum suction tube 11, and adjust the negative pressure in the sputum suction tube 11 under the condition that the negative pressure of the sputum suction pump remains unchanged, so as to improve the applicability of the sputum suction tube 11 in use, omit the cumbersome steps of replacing the connector, speed up the sputum suction work on the patient, and ensure the safety of the patient. Such as Figure 5 and Figure 6As shown in the figure, the elastic sealing sleeve 1001 inside the lumen adjusting assembly 10 is made of medical silicone material, bonded to the outer wall of the connector 1 by medical epoxy glue, and completely covers the through hole 9. It corresponds to the two through holes 9 on the connector 1. Two adjusting balls 1002 are also fixedly connected to the elastic sealing sleeve 1001. The adjusting balls 1002 are made of polyurethane elastomer. A part of the adjusting ball 1002 protrudes into the elastic sealing sleeve 1001, and the other part of the adjusting ball 1002 protrudes outside the elastic sealing sleeve 1001. And the part protruding inward just corresponds to the through hole 9. During the sputum suction operation, the medical staff presses the adjusting ball 1002, and the elastic sealing sleeve 1001 elastically deforms, so that the two adjusting balls 1002 move relatively. After the adjusting ball 1002 moves along the through hole 9 into the inner cavity of the connector 1, the spherical body of the adjusting ball 1002 itself occupies a part of the space in the inner cavity of the connector 1, and the occupied space is positively correlated with the pressing force. By adjusting the distance between the two adjusting balls 1002, the negative pressure intensity of the connector 1 on the sputum suction tube 11 is controlled in real time.

[0037] Anti-slip lines 1003 are provided on the periphery of the elastic sealing sleeve 1001, and the depth of the anti-slip lines 1003 is 0.5 - 1 mm.

[0038] The anti-slip lines 1003 are provided on the outer surface of the elastic sealing sleeve 1001, with a line depth of 0.8 mm, distributed in a diamond grid pattern to enhance the operating friction.

[0039] The reinforcement sleeve 4 includes a collar 401. A second connecting band 402 is fixedly connected to the collar 401. The other end of the second connecting band 402 is fixedly connected to a fixing ring 403. Adjusting locks 404 are provided at both ends of the fixing ring 403.

[0040] The inner diameter of the collar 401 is 12 mm, which matches the outer diameter of the connector 1. The collar 401 is connected to the fixing ring 403 through the second connecting band 402. Similar to the function of the first connecting band 13, the second connecting band 402 can prevent the loss of the fixing ring 403. At the same time, under the limitation of the second connecting band 402, the fixing ring 403 limits the fixing position of the negative pressure tube 3 on the chuck 2. When the negative pressure tube 3 is disengaged from the chuck 2, the second connecting band 402 can provide a reverse pulling force. The fixing ring 403 is an open ring structure, and the head and tail ends of the fixing ring 403 need to be connected by adjusting locks 404.

[0041] The adjusting lock 404 includes a fixing block 4041. The fixing block 4041 is fixedly connected to one end of the fixing ring 403. An adjusting worm 4042 is rotatably connected to the fixing block 4041. A helical tooth groove 4043 cooperating with the adjusting worm 4042 is provided at the other end of the fixing ring 403.

[0042] On the one hand, the adjustment buckle 404 can be composed of a fixed block 4041, an adjustment worm 4042 and a helical tooth groove 4043. The thread of the adjustment worm 4042 meshes with the helical tooth groove 4043. By rotating the adjustment worm 4042, one end of the fixed ring 403 will move along the fixed block 4041 towards the other end of the fixed ring 403, so that the perimeter of the ring structure formed by the fixed ring 403 gradually decreases, thereby achieving the purpose of tightening the negative pressure tube 3, strengthening the negative pressure tube 3 and preventing it from falling off.

[0043] Embodiment 2:

[0044] The structure is the same as that of the above embodiment. As Figure 8 and Figure 9 shown, the specific difference of this embodiment lies in that: the adjustment buckle 404 further includes a limit block 4044, the limit block 4044 is fixedly connected to one end of the fixed ring 403, a ratchet hole 4045 is provided in the limit block 4044, and a ratchet rack 4046 cooperating with the ratchet hole 4045 is fixedly connected to the other end of the fixed ring 403; a push plate 4047 is provided on the side of the ratchet rack 4046, the push plate 4047 is fixedly connected to the fixed ring 403, and an anti-slip protrusion is provided at the end of the push plate 4047.

[0045] On the other hand, the adjustment buckle 404 can also be composed of a limit block 4044 and a ratchet rack 4046. The end with the ratchet rack 4046 extends into the ratchet hole 4045 of the limit block 4044. The ratchet rack 4046 can only pass unidirectionally in the ratchet hole 4045, similar to the structure of a cable tie in life, so as to complete the buckling and locking of the two ends of the fixed ring 403. At the same time, as the length of the ratchet rack 4046 extending into the ratchet hole 4045 increases, the perimeter length of the fixed ring 403 becomes smaller, and thus the fixing work of the negative pressure tube 3 can also be completed. The push plate 4047 and the anti-slip protrusion on one side of the ratchet rack 4046 facilitate the user to apply force and improve the fixing firmness of the negative pressure tube 3.

[0046] The overall working process of the present invention: One end of the negative pressure tube 3 is connected to a negative pressure pump, and the other end of the negative pressure tube 3 is connected to the chuck 2. The fixing ring 403 on the reinforcement sleeve 4 surrounds the negative pressure tube 3, and the fixing ring 403 is tightened by adjusting the lock catch 404 to ensure the tight connection between the negative pressure tube 3 and the chuck 2. Then, the cap 8 and the bent sputum suction tube 11 are covered, and the negative pressure of the negative pressure pump is adjusted. After the negative pressure adjustment is completed, the operator holds the connector 1 with one hand and the sputum suction tube 11 with the other hand, and inserts the end of the sputum suction tube 11 into the patient's respiratory tract. The two thumbs and index fingers holding the connector 1 are respectively placed at the positions of the two adjustment balls 1002. When negative pressure air flow is required for suction, the force applied to the adjustment balls 1002 is released. Under the elastic rebound of the elastic sealing sleeve 1001, the inner sides of the adjustment balls 1002 move outward to the outside of the connector 1, and the lumen of the connector 1 forms a passage. When suction air flow is not required, the adjustment balls 1002 are pinched to completely close the through hole 9, and the connection between the negative pressure tube 3 and the sputum suction pump is disconnected. Repeat this process until the respiratory tract is cleaned. After use, turn off the negative pressure pump, and discard the connector 1 and the sputum suction tube 11 as a whole to avoid the risk of cross-infection caused by repeated use.

[0047] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A disposable respiratory secretion aspiration adapter for a sputum aspirator pump, characterized in that: It includes a connector (1), one end of the connector (1) is fixedly connected with a chuck (2), a negative pressure tube (3) is sleeved on the chuck (2), a reinforcement sleeve (4) is fitted around the negative pressure tube (3), the middle of the connector (1) is fixedly connected with an exhaust pipe (5), an exhaust hole (6) communicating with the connector (1) is arranged in the exhaust pipe (5), a guide vane (7) is arranged on one side of the exhaust hole (6), the guide vane (7) is fixedly connected with the inner cavity of the connector (1), a cap (8) is fitted outside the exhaust pipe (5), a through hole (9) is opened on the side of the exhaust pipe (5), a lumen adjusting component (10) is fitted in the through hole (9), the lumen adjusting component (10) is hermetically connected with the connector (1), and the other end of the connector (1) is fixedly connected with a sputum suction tube (11).

2. The disposable respiratory secretion aspiration adapter for a sputum suction pump according to claim 1, characterized in that: The lumen adjusting component (10) includes an elastic sealing sleeve (1001), the elastic sealing sleeve (1001) is fixedly connected to the outer wall of the connector (1), the elastic sealing sleeve (1001) is fixedly connected with the connector (1), an adjusting ball (1002) is fixedly connected to the elastic sealing sleeve (1001), and the diameter of the adjusting ball (1002) is adapted to the diameter of the through hole (9).

3. The disposable respiratory secretion aspiration adapter for a sputum aspirator according to claim 2, characterized in that: Anti-slip lines (1003) are arranged on the periphery of the elastic sealing sleeve (1001), and the depth of the anti-slip lines (1003) is 0.5-1 mm.

4. The disposable respiratory secretion aspiration adapter for a sputum suction pump according to claim 1 or 2, characterized in that: The central axis of the exhaust pipe (5) forms an angle of 15-30° with the central axis of the connector (1), the inclination angle of the guide vane (7) is the same as the inclination angle of the exhaust pipe (5), and a baffle (12) is fixedly connected to the upper end of the exhaust pipe (5).

5. The disposable respiratory secretion aspiration adapter for a sputum suction pump according to claim 4, characterized in that: A first connecting band (13) is fixedly connected between the baffle (12) and the cap (8), the baffle (12) is horizontally placed, the horizontal projection area of the baffle (12) is larger than the cross-sectional area of the exhaust pipe (5), and the through hole (9) is of an L-shaped structure.

6. The disposable respiratory secretion aspiration adapter for a sputum aspirator according to claim 1, wherein: The reinforcement sleeve (4) includes a sleeve ring (401), a second connecting band (402) is fixedly connected to the sleeve ring (401), the other end of the second connecting band (402) is fixedly connected with a fixing ring (403), and adjusting locks (404) are arranged at both ends of the fixing ring (403).

7. The disposable respiratory secretion aspiration adapter for a sputum aspirator according to claim 6, characterized in that: The adjusting lock (404) includes a fixing block (4041), the fixing block (4041) is fixedly connected to one end of the fixing ring (403), an adjusting worm (4042) is rotatably connected to the fixing block (4041), and a helical tooth groove (4043) cooperating with the adjusting worm (4042) is arranged at the other end of the fixing ring (403).

8. A disposable respiratory secretion aspiration adapter for a sputum suction pump, characterized in that: The adjusting lock (404) further includes a limiting block (4044), the limiting block (4044) is fixedly connected to one end of the fixing ring (403), a ratchet hole (4045) is arranged in the limiting block (4044), and a ratchet bar (4046) cooperating with the ratchet hole (4045) is fixedly connected to the other end of the fixing ring (403).

9. A disposable respiratory secretion aspiration adapter for a sputum aspirator pump, characterized in that: A push plate (4047) is provided on the side of the ratchet rack (4046), the push plate (4047) is fixedly connected to the fixed ring (403), and anti-slip protrusions are provided at the end of the push plate (4047).

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