Automatic sputum suction device and sputum suction tube driving mechanism

Abstract

The application discloses an automatic sputum suction device, which comprises a sputum suction tube, one end of the sputum suction tube entering into a respiratory tract of a patient, and the other end of the sputum suction tube being connected with a suction device; and a sputum suction tube driving mechanism, the sputum suction tube penetrating through the sputum suction tube driving mechanism, and the sputum suction tube driving mechanism being used for driving the sputum suction tube to move axially and rotate. The automatic sputum suction device of the application can realize automatic sputum suction by operating the sputum suction tube by the sputum suction tube driving mechanism, can replace medical staff to perform sputum suction on the patient, can save time of the medical staff, and can more timely remove sputum in the respiratory tract of the patient, and improve a treatment effect of pneumonia of the patient who is long-term bedridden. In addition, the application further discloses a sputum suction tube driving mechanism, which is helpful to realize automatic sputum suction on the patient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to an automatic sputum suction device and a sputum suction tube driving mechanism. BACKGROUND

[0002] In the existing medical operation, sputum suction is mainly based on the principle of negative pressure suction, and the sputum in the respiratory tract of the patient is sucked out through the sputum suction tube to avoid the situation that the sputum of the patient with sputum excretion dysfunction is retained in the respiratory tract in large quantities, resulting in difficulty in breathing and respiratory system infection. However, sputum suction must be manually operated by the sputum suction tube, and the sputum suction tube must be repeatedly pulled and rotated by the medical staff to achieve the effect of sputum suction. Therefore, it has great medical value to realize efficient and feasible automatic sputum suction. SUMMARY

[0003] In order to solve one of the technical problems in the prior art, the present application provides an automatic sputum suction device which can automatically drive the sputum suction tube to perform pulling and rotating actions, and can induce the patient to cough in a controlled manner. The cough can promote the sputum in the deep part of the respiratory tract of the patient to be discharged to the shallow part, thereby improving the sputum suction effect and efficiency.

[0004] In addition, the present application also provides a sputum suction tube driving mechanism which is applied to the automatic sputum suction device.

[0005] According to the automatic sputum suction device of the first aspect of the present application, the sputum suction tube is inserted into the respiratory tract of the patient, and the other end of the sputum suction tube is connected with a suction device. The sputum suction tube driving mechanism is used to drive the sputum suction tube to move axially and rotate.

[0006] The automatic sputum suction device of the first aspect of the present application has at least the following beneficial effects: the automatic sputum suction device of the present application drives the sputum suction tube to perform pulling, rotating and inserting actions after the sputum suction tube is inserted into the respiratory tract or artificial airway, thereby realizing automatic, repeated and controlled sputum suction operation. The automatic sputum suction device of the present application is operated by the sputum suction tube driving mechanism to realize automatic sputum suction, which can replace the medical staff to perform sputum suction on the patient, increase the sputum suction operation frequency, and improve the treatment effect of the sputum retention pneumonia of the patient with sputum excretion dysfunction.

[0007] The automatic sputum suction device according to the first aspect of the present application, the outer tube wall of the sputum suction tube is provided with a stimulator, the stimulator has a stimulating part, the stimulating part protrudes outward relative to the outer tube wall of the sputum suction tube, and the stimulating part can stimulate the inner wall of the respiratory tract. In the process of sputum suction by using the sputum suction tube, when the sputum suction tube moves and rotates, the stimulator provided on the outer tube wall of the sputum suction tube can stimulate the inner wall of the respiratory tract of the patient, so as to induce the patient to cough, the cough can promote the patient to discharge the sputum in the deep part of the respiratory tract to the shallow part of the respiratory tract, and the sputum suction effect and efficiency are improved. The traditional sputum suction operation is difficult to suck the sputum in the deep part of the respiratory tract, and the automatic sputum suction device of the present application can cooperate with the sputum suction tube driving mechanism to induce the patient to cough in a controlled manner, promote the patient to discharge the sputum in the deep part of the respiratory tract to the shallow part of the respiratory tract, and facilitate the removal of the sputum in the deep part of the respiratory tract, thereby improving the sputum suction effect and efficiency.

[0008] The automatic sputum suction device according to the first aspect of the present application, the stimulating part is at least one of a hair-like object, a protruding point, a sheet-shaped protruding block, a cylindrical protruding block and a conical protruding block, the stimulating part in the above-mentioned shapes can effectively stimulate the inner wall of the respiratory tract of the human body and is not easy to cause damage to the inner wall of the respiratory tract.

[0009] The automatic sputum suction device according to the first aspect of the present application, the side wall of the sputum suction tube is provided with a side hole. The side hole is arranged close to the end of the end part of the sputum suction tube inserted into the respiratory tract. In the process of sputum suction, the sputum in the side wall of the respiratory tract can be more conveniently sucked into the sputum suction tube and the overflow tube through the side hole, so as to improve the sputum suction effect and efficiency. In addition, the sputum suction tube driving mechanism can drive the sputum suction tube to perform a rotating action, so that the side hole rotates synchronously and the sputum suction operation is performed on the inner wall of the respiratory tract, thereby improving the sputum suction effect.

[0010] The automatic sputum suction device according to the first aspect of the present application, the sputum suction tube is provided with a flushing tube, the flushing function and the smooth sputum suction tube function can be realized, the sputum suction tube is prevented from being blocked by thick sputum and sticky sputum, and the smooth sputum suction is ensured. The traditional sputum suction mostly uses a single-cavity sputum suction tube, and when the sputum suction tube is used for sputum suction, the sputum suction tube is easily blocked, the sputum suction tube needs to be pulled out for multiple times, the sputum suction tube is flushed with liquid to unblock the sputum suction tube and the suction pipeline, and then the sputum suction tube is inserted into the respiratory tract again, which makes the sputum suction operation need to be inserted into the respiratory tract for multiple times, and the respiratory tract mucosa is easily damaged. The automatic sputum suction device of the present application preferably uses a sputum suction tube with a flushing tube, the sputum suction tube is effectively prevented from being blocked, the sputum suction operation does not need to pull out and insert the sputum suction tube for multiple times, and the automatic sputum suction operation can be performed for multiple times without human operation intervention, so that the automatic sputum suction becomes feasible.

[0011] According to the automatic sputum suction device, the end of the sputum suction tube is provided with an anti-overflow tube, an anti-overflow cavity is arranged in the anti-overflow tube, and the tube cavity of the sputum suction tube and the tube cavity of the flushing tube are communicated with the anti-overflow cavity. The sputum suction tube is provided with the anti-overflow tube and the anti-overflow cavity, the tube cavity of the flushing tube is communicated with the anti-overflow cavity, and the flushing liquid first reaches the anti-overflow cavity; in the process of sputum suction, when the negative pressure of suction is large enough, the sputum in the respiratory tract is sucked into the anti-overflow cavity and the tube cavity of the sputum suction tube by the negative pressure, and the flushing liquid is limited in the anti-overflow cavity and the tube cavity of the sputum suction tube to achieve the effects of diluting the sputum and flushing the tube cavity, the flushing liquid plays a role of internal flushing, effectively prevents the flushing liquid from overflowing into the respiratory tract, avoids excessive coughing and respiratory tract spasm caused by excessive overflow of the flushing liquid, makes the flushing and sputum suction tube have definite effects, improves the sputum suction effect and efficiency, improves the comfort of the patient, reduces the stimulation to the patient, and reduces the risk of aggravating the hypoxia of the patient.

[0012] According to the sputum suction tube driving mechanism, the support assembly is provided with the connecting portion, the mounting bracket is movably connected to the connecting portion, the sputum suction tube passes through the mounting bracket, the axial driving unit is installed on the mounting bracket, the axial driving unit includes at least one transmission wheel and a first driving machine for driving the transmission wheel to rotate, the transmission wheel clamps the sputum suction tube, and the transmission wheel drives the sputum suction tube to move along the axial direction of the sputum suction tube when the transmission wheel rotates, and the rotary driving unit is installed on one of the support assembly and the mounting bracket, and the rotary driving unit includes a second driving machine for driving the mounting bracket to rotate around the axial direction of the mounting bracket.

[0013] According to the sputum suction tube driving mechanism, the support assembly is provided with the connecting portion, the mounting bracket is movably connected to the connecting portion, the sputum suction tube passes through the mounting bracket, the axial driving unit is installed on the mounting bracket, the axial driving unit includes at least one transmission wheel and a first driving machine for driving the transmission wheel to rotate, the transmission wheel clamps the sputum suction tube, and the transmission wheel drives the sputum suction tube to move along the axial direction of the sputum suction tube when the transmission wheel rotates, and the rotary driving unit is installed on one of the support assembly and the mounting bracket, and the rotary driving unit includes a second driving machine for driving the mounting bracket to rotate around the axial direction of the mounting bracket.

[0014] The first driving machine and the second driving machine can be electric motors, pneumatic motors or hydraulic driving motors, etc. The first driving machine and the second driving machine can be configured with speed reduction devices to reduce the rotating speed of the output shafts to adapt to the corresponding movement driving. Further, the first driving machine and the second driving machine use micro motors with speed reduction devices, preferably micro speed reduction hollow cup motors. Such motors have small volume and slow rotating speed of the output shaft, which can miniaturize the sputum suction tube driving mechanism, reduce the overall weight, facilitate wearing on the human body, and improve the comfort. After using the speed reduction device, the sputum suction tube can be driven to rotate and move at a moderate speed, so that the movement of the sputum suction tube driven by the sputum suction tube driving device is close to the manual sputum suction operation.

[0015] The support assembly is provided with a guide tube for guiding the sputum suction tube to enter the respiratory tract of the patient or the artificial airway. The connecting part is arranged at the end of the guide tube, and the mounting bracket is rotatably connected to the end of the guide tube. Further, the diameters of the guide tube and the sputum suction tube are matched. After the sputum suction tube passes through the guide tube, the sputum suction tube enters the respiratory tract of the patient from the nostrils or the oral cavity or the entrance of the artificial airway. The guide tube can guide the sputum suction tube to enter the respiratory tract of the patient or the artificial airway more smoothly. Meanwhile, the mounting bracket is rotatably connected to the end of the guide tube, and the mounting bracket is installed by using the guide tube, so that the mounting bracket can easily realize the axial rotation around the mounting bracket.

[0016] The support assembly includes at least one of a base and a fixed bracket. The base is installed on the human body, and the fixed bracket is fixed on the bed, the ground, the wall or the ceiling. The base is installed at least one of the head, the neck and the upper chest of the human body. The support assembly is installed and fixed on the human body through the base. On the one hand, the support assembly can bear the weight of the automatic sputum suction device. On the other hand, the automatic sputum suction device becomes an integral part of the human body. When the human body moves, the sputum suction tube in the respiratory tract will not be displaced or pulled out of the respiratory tract, which ensures the stability of the automatic sputum suction process and makes the automatic sputum suction feasible. The sputum suction tube driving mechanism of the present application has a simple structure and a small volume, and is suitable for wearing on the human body. In addition, the support assembly can also be fixed on the bed, the ground, the wall or the ceiling through the fixed bracket. When the motor and other accessories used are relatively large, the fixed bracket can effectively distribute the weight of the automatic sputum suction device, thereby avoiding causing great pressure on the patient's body. Further, the base and the fixed bracket can be used together.

[0017] According to the sputum suction tube driving mechanism of the second aspect of the present application, the mounting bracket and the guide tube are connected through a clamping structure, the clamping structure comprises a clamping groove and a clamping block, the clamping groove is arranged on one of the mounting bracket and the guide tube, and the clamping block is arranged on the other one of the mounting bracket and the guide tube. The mounting bracket and the guide tube are connected through the clamping structure, and are not easy to be separated, meanwhile, the rotation of the mounting bracket is not hindered, and the mounting and dismounting are convenient.

[0018] According to the sputum suction tube driving mechanism of the second aspect of the present application, in some embodiments, the second driving machine is mounted on the support assembly, a first rotating gear is arranged on the output shaft of the second driving machine, and a second rotating ring gear is arranged on the mounting bracket and matched with the first rotating gear.

[0019] According to the sputum suction tube driving mechanism of the second aspect of the present application, in some other embodiments, the second driving machine is mounted on the mounting bracket, a third rotating gear is arranged on the output shaft of the second driving machine, and a fourth rotating ring gear is arranged on the support assembly and matched with the third rotating gear.

[0020] Further, the second rotating ring gear and the fourth rotating ring gear can be independent gear structures, which are detachably mounted on or fixedly mounted on the support assembly or the mounting bracket, or are integrally formed with the support assembly or the mounting bracket.

[0021] According to the sputum suction tube driving mechanism of the second aspect of the present application, two transmission wheels are arranged on the axial driving unit, and the sputum suction tube is clamped by the two transmission wheels. The two symmetrically arranged transmission wheels can better clamp the sputum suction tube, so as to drive the sputum suction tube to move. Further, the axis of the clamped sputum suction tube coincides with the rotation axis of the mounting bracket.

[0022] According to the sputum suction tube driving mechanism of the second aspect of the present application, the axial driving unit further comprises two transmission gears, each of the transmission gears is connected with one of the transmission wheels, and the transmission gear and the corresponding transmission wheel are coaxially arranged; a transmission worm is arranged on the output shaft of the first driving machine, the transmission worm is located between the two transmission gears, and the transmission worm drives the two transmission gears to rotate at the same time. The first driving machine drives the two transmission gears to rotate in opposite directions by using one transmission worm, so that the transmission structure is greatly simplified.

[0023] According to the second aspect of the present application, the transmission wheel can be made of soft material, or an outer layer wheel made of soft material is arranged on the circumferential surface of the transmission wheel; the soft material is rubber or silicone. The transmission wheel made of soft material or the outer layer wheel made of soft material arranged on the circumferential surface of the transmission wheel can increase the friction between the transmission wheel and the sputum suction tube, so that the transmission wheel can better drive the sputum suction tube to move.

[0024] According to the second aspect of the present application, the sputum suction tube driving mechanism further comprises a sensing module, which is arranged on at least one of the support assembly, the mounting bracket, the axial driving unit and the rotary driving unit, and is used for monitoring the movement of the sputum suction tube and the operation of the automatic sputum suction device.

[0025] According to the second aspect of the present application, the mounting bracket comprises an inner bracket through which the sputum suction tube passes, and an outer bracket connected to the inner bracket through a detachable structure, which is used for mounting all or part of the structures of the axial driving unit and the rotary driving unit, and does not contact the sputum suction tube. In the present application, the mounting bracket is designed as a detachable inner bracket and an outer bracket. The inner bracket and the transmission wheel mounted on the inner bracket contact the sputum suction tube. Since the sputum suction tube is repeatedly inserted and extracted during the sputum suction process, the sputum suction tube is contaminated by the respiratory tract secretions. The contaminated inner bracket can be used as a disposable component, or can be cleaned and disinfected for repeated use. The outer bracket and the driving assembly mounted on the outer bracket do not contact the sputum suction tube, and the outer bracket remains clean. When the driving device arranged on the outer bracket is not suitable for immersion and high-temperature disinfection, the detachable design of the inner bracket and the outer bracket can facilitate the cleaning and disinfection of the two by different methods. Since the outer bracket does not contact the sputum suction tube, as long as the sterile inner bracket is replaced, the outer bracket that has not been cleaned and disinfected can be used directly without waiting for the outer bracket to be disinfected before use again, thereby improving the use efficiency of the outer bracket, reducing the cost of the medical institution, and reducing the cost of purchasing too many outer bracket accessories.

[0026] According to the second aspect of the present application, the sputum suction tube driving mechanism further comprises an outer cover connected to any one of the support assembly and the mounting bracket, which can cover the mounting bracket and the support assembly. The outer cover is used to avoid external objects from being entangled or clamped into the sputum suction tube driving mechanism, and plays a protective and aesthetic role.

[0027] According to the second aspect of the present application, the installation support is provided with an auxiliary ring in front of the installation support, the auxiliary ring is sleeved on the sputum suction tube, and the auxiliary ring is connected with the installation support or the cover through a flexible belt. The auxiliary ring is arranged to limit the maximum movement distance of the sputum suction tube when the sputum suction tube is passively pulled, so that the sputum suction tube has the effect of preventing the sputum suction tube from being accidentally pulled out of the respiratory tract. The sputum suction tube can prevent the sputum suction tube from being accidentally pulled out of the respiratory tract when the patient is excessively active or accidentally pulls the sputum suction tube.

[0028] According to the second aspect of the present application, the automatic sputum suction device further comprises an automatic sputum suction device controller, the automatic sputum suction device controller controls the change of the internal pressure of the suction device and the operation of the sputum suction tube driving mechanism, and the automatic sputum suction device controller receives the signal obtained by the sensing module. When the sputum suction operation is completed, the automatic sputum suction device controller closes the communication between the sputum suction tube and the suction device, and stops the operation of the sputum suction tube driving mechanism.

[0029] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the structure particularly pointed out in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the technical scheme of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical scheme of the present application, and do not constitute a limitation on the technical scheme of the present application.

[0031] Figure 1 is a structural schematic diagram of an automatic sputum suction device provided by the first embodiment of the present application;

[0032] Figure 2 is a structural schematic diagram of a sputum suction tube provided by the first embodiment of the present application;

[0033] Figure 3 is one of schematic diagrams of a sputum suction tube driving mechanism provided by the first embodiment of the present application;

[0034] Figure 4 is the second schematic diagram of the sputum suction tube driving mechanism provided by the first embodiment of the present application;

[0035] Figure 5 is a cross-sectional view of a sputum suction tube driving mechanism provided by the second embodiment of the present application;

[0036] Figure 6 is Figure 5 is an enlarged schematic diagram of A in FIG. 8;

[0037] Figure 7is a schematic view of an automatic sputum suction device provided by a third embodiment of the present application;

[0038] Figure 8 is Figure 7 is a structural schematic view of a sputum suction tube driving mechanism in

[0039] Figure 9 is a schematic view of an automatic sputum suction device provided by a fourth embodiment of the present application;

[0040] Figure 10 is a schematic view of an automatic sputum suction device provided by a fifth embodiment of the present application;

[0041] Figure 11 is a structural schematic view of a sputum suction tube driving mechanism provided by a sixth embodiment of the present application.

[0042] Reference signs:

[0043] sputum suction tube 100; first stimulator 101; second stimulator 102; flushing tube 110; Y-shaped joint 120; sputum suction tube driving mechanism 200; support assembly 210; guide tube 211; clamping groove 2111; mounting bracket 220; guide ring 221; sleeve 222; clamping block 2221; inner bracket 223; outer bracket 224; axial driving unit 230; first driving machine 231; transmission worm 232; transmission gear 233; transmission wheel 234; rotary driving unit 240; second driving machine 241; first rotary gear 242; second rotary ring gear 243; auxiliary ring 250; flexible belt 251; outer cover 260; upper cover 261; lower cover 262. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0045] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection or movable connection, or detachable connection or non-detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, intermediate structure, or the internal communication of two elements, indirect communication or the interaction relationship between two elements.

[0046] In the description of the present application, it is necessary to explain that several meanings are one or more, the meaning of multiple (or multiple) is two or more, greater than, less than, more than, etc. Understand as not including the number, above, below, etc. Understand as including the number. If there is a description of "first", "second", etc. Is used only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features or implying the sequence of indicated technical features.

[0047] The embodiments of the present application are further described below with reference to the drawings.

[0048] Referring to Figure 1 The present application provides an automatic sputum suction device, comprising a sputum suction tube 100 and a sputum suction tube driving mechanism 200. One end of the sputum suction tube 100 passes through the sputum suction tube driving mechanism 200 and enters the patient's respiratory tract from the nostril or oral cavity or artificial airway, and the other end of the sputum suction tube 100 is used to connect the suction device; the suction device generates negative pressure, and the sputum in the patient's respiratory tract is sucked out through the sputum suction tube 100, thereby avoiding the accumulation of sputum in the patient's body. The sputum suction tube driving mechanism 200 is used to drive the sputum suction tube 100 to move, so that the sputum suction tube 100 can complete the withdrawal, insertion movement along the sputum suction tube axis, and also can complete the reciprocating rotation movement, and also can complete the combination of the two movements; the withdrawal, insertion movement can make the sputum suction tube 100 deeply into different positions of the respiratory tract, and the sputum at the position is sucked out; the reciprocating rotation movement can make the sputum suction tube 100 better cooperate to complete the sputum suction operation, which will be described in detail below.

[0049] In some embodiments of the present application, a flushing pipe 110 is arranged on the sputum suction tube 100, one end of the flushing pipe 110 is connected to a flushing device, and the opening, closing, flow, flow rate, etc. Of the flushing liquid is controlled by the flushing device. The flushing pipe 110 is used to inject an appropriate amount of flushing liquid into the sputum suction tube 100 or the patient's respiratory tract to dilute the thick sputum, and can achieve the functions of flushing and unobstructed sputum suction pipe, avoiding the thick sputum from blocking the sputum suction tube 100, and ensuring the smooth progress of sputum suction.

[0050] Further, referring to Figure 2 In some embodiments of the present application, most of the pipe body of the flushing pipe 110 is located inside the sputum suction tube 100, and the flushing pipe 110 is integrally arranged close to the inner side wall of the sputum suction tube 100. By arranging the sputum suction tube 100 and the flushing pipe 110 together, the number of pipes can be reduced, and the difficulty of the pipe into the human body can be reduced. In addition, it should be noted that in some other embodiments of the present application, the flushing pipe 110 can also be partially embedded in the sputum suction tube 100; or the flushing pipe 110 is arranged side by side outside the sputum suction tube 100, and the flushing pipe 110 is arranged close to the sputum suction tube 100.

[0051] In some embodiments of the present application, the end of the sputum suction tube 100 is also provided with an anti-overflow tube, and an anti-overflow cavity is arranged in the anti-overflow tube. The lumen of the sputum suction tube 100 and the lumen of the flushing tube 110 are respectively communicated with the anti-overflow cavity. The sputum suction tube 100 is provided with the anti-overflow tube and the anti-overflow cavity, and the lumen of the flushing tube 110 is communicated with the anti-overflow cavity. The flushing liquid first reaches the anti-overflow cavity. In the process of sputum suction, when the negative pressure of suction is large enough, the sputum in the respiratory tract is sucked into the anti-overflow cavity and the lumen of the sputum suction tube 100 by the negative pressure, and the flushing liquid is limited in the anti-overflow cavity and the lumen of the sputum suction tube 100 to achieve the effect of diluting sputum and flushing the lumen. The flushing liquid plays the role of internal flushing, effectively prevents the flushing liquid from overflowing into the respiratory tract, avoids excessive coughing and respiratory tract spasm caused by excessive overflow of the flushing liquid, and makes the effect of the flushing sputum suction tube 100 accurate, improves the effect and efficiency of sputum suction, improves the comfort of the patient, reduces the stimulation to the patient, and reduces the risk of aggravating the hypoxia of the patient.

[0052] Further, in some embodiments of the present application, a side hole is arranged in the side wall of at least one of the sputum suction tube 100 and the anti-overflow tube, and the side hole is arranged close to the end of the end of the sputum suction tube 100 extending into the respiratory tract. In the process of sputum suction, the sputum on the side wall of the respiratory tract can be more conveniently sucked into the sputum suction tube 100 and the anti-overflow tube through the side hole to improve the effect and efficiency of sputum suction. In the present embodiment, the sputum suction tube driving mechanism 200 can drive the sputum suction tube 100 to rotate, so that the side hole rotates synchronously, and the sputum on the inner wall of the respiratory tract is sucked and removed, thereby improving the effect of sputum suction.

[0053] Referring to Figure 2 In some embodiments of the present application, a plurality of stimulators are arranged on the outer tube wall of the sputum suction tube 100 to induce coughing of the patient during sputum suction, so that the sputum located in the deep part of the respiratory tract and unable to be reached by the sputum suction tube 100 is discharged to the shallow part and then sucked and removed by the sputum suction tube 100. Figure 2 As shown in the drawings, the first stimulator 101 and the second stimulator 102 are arranged on the outer tube wall of the sputum suction tube 100. The two stimulators are arranged separately to physically stimulate different positions of the respiratory tract and strengthen the stimulation effect to more easily induce coughing of the patient. In the present embodiment, the sputum suction tube driving mechanism 200 can drive the sputum suction tube 100 to reciprocatingly rotate or move axially along the sputum suction tube. During the rotation or movement of the sputum suction tube 100 with the stimulators, the stimulators can fully stimulate the respiratory tract of the patient to induce coughing of the patient. The coughing induction is controllable, and the rotation or movement of the sputum suction tube 100 can be stopped after the operation of sucking and removing the sputum is completed, thereby avoiding excessive coughing of the patient. By monitoring the electro-physiological signal of the chest of the patient, the coughing condition of the patient is recognized and monitored. If the patient has excessive coughing or long-time coughing, the reciprocating rotation or axial movement of the sputum suction tube is slowed down or stopped.

[0054] Further, the first stimulator 101 is arranged on the outer tube wall of the suction catheter 100 at a distance of 0-5 cm from the distal end of the suction catheter 100. When the suction catheter 100 is inserted into the lower respiratory tract through the glottis, the first stimulator 101 can stimulate the inner wall of the lower respiratory tract, thereby inducing the patient to cough. Since the suction catheter is usually inserted blindly, the suction catheter sometimes fails to pass through the glottis and reach the lower respiratory tract. When the suction catheter 100 fails to be inserted into the lower respiratory tract and is retained in the throat, the first stimulator 101 can stimulate the shallow part of the respiratory tract, i.e., the throat, and still induce the patient to cough. The cough can cause the sputum to be discharged from the lower respiratory tract to the upper respiratory tract, which is conducive to the suction of the sputum in the respiratory tract. The second stimulator 102 is arranged on the outer tube wall of the suction catheter 100 at a distance of 8-20 cm from the distal end. When the suction catheter 100 is inserted into the lower respiratory tract through the glottis, the second stimulator 102 can still stimulate the shallow part of the respiratory tract, i.e., the throat. Since the shallow part of the respiratory tract, i.e., the throat, is sensitive to physical stimulation, the patient is likely to cough after being stimulated.

[0055] In some embodiments of the present application, with reference to Figure 2 , the stimulator can be integrally formed on the outer tube wall of the suction catheter 100. By integrally forming, the fixation of the stimulator is more reliable, and the number of accessories and the assembly process can be reduced. In addition, in other embodiments, the stimulator can also be assembled on the suction catheter 100 as an accessory. The stimulator includes a sleeve, which can be a complete ring structure, or the sleeve can also be part of a ring structure. The stimulator is fixedly connected or movably sleeved on the outside of the suction catheter 100 through the sleeve. The stimulator and the suction catheter 100 are independently produced and then assembled, which can simplify the structure of each accessory and make it easier to achieve industrialized production. Further, when the stimulator is fixedly connected to the suction catheter 100 through the sleeve, the sleeve and the outer tube wall of the suction catheter 100 can be in interference fit, or the sleeve can be fixed to the outer tube wall of the suction catheter 100 by an adhesive. When the stimulator is movably sleeved on the outside of the suction catheter 100 through the sleeve, the outer tube wall of the suction catheter 100 can be provided with a limiting structure to limit the sliding position of the sleeve.

[0056] In some embodiments of the present application, the stimulating part is one or more of a hair, a bump, a sheet-shaped external protrusion, a cylindrical external protrusion, and a conical external protrusion. The movement and rotating motion of the stimulating part can physically stimulate the respiratory tract and induce the patient to cough. The stimulating part is preferably made of a flexible material, such as a soft hair or a sheet-shaped external protrusion made of a flexible material, which can deform in the respiratory tract, facilitate the insertion of the sputum suction tube into the respiratory tract, facilitate the passage of the stimulator through the glottis and other narrow parts of the respiratory tract, minimize the damage of the stimulator to the respiratory tract, and improve the safety of the sputum suction tube. The stimulating part can also be a low-height hard protrusion, such as a bump. The stimulator can still smoothly pass through the glottis and still mechanically stimulate the respiratory tract wall to induce coughing. Further, the stimulating part of the hair can form a structure similar to a brush, and the stimulating part of the sheet-shaped external protrusion can form a structure similar to a scraper. During the suction process of the sputum suction tube, the sputum with high viscosity on the respiratory tract wall can also be removed, further enhancing the cleaning effect of the sputum suction tube.

[0057] Further, in some embodiments of the present application, the distal end of the sputum suction tube 100 can also be provided with two or more connection ends through a Y-shaped joint 120, as shown in Figure 7 At least one of the connection ends is used to connect the suction device. The other connection ends can be used for other medical purposes, such as connecting a breathing device, an oxygen supply tube, an air humidification and warming device, etc. When the sputum suction operation is not performed, the sputum suction tube 100 deeply inserted into the respiratory tract of the patient can provide the patient with oxygen or air with different oxygen concentrations that have been warmed and humidified, which directly reaches the respiratory tract and lungs of the patient through the sputum suction tube 100.

[0058] Referring to Figure 1 In some embodiments of the present application, the sputum suction tube driving mechanism 200 includes a support assembly 210, a mounting bracket 220, an axial driving unit 230, and a rotating driving unit 240.

[0059] The support assembly 210 is used to mount other components and bear the weight of the entire sputum suction tube driving mechanism 200.

[0060] Preferably, the support assembly 210 includes a base for mounting to the body of the patient. The structure and shape of the base are based on the body shape of the mounting site, so that it can be better fixed to the patient and not cause excessive discomfort. Preferably, the base is mounted at least one of the head, neck, and upper chest of the human body. For example, Figure 1 and Figure 7As shown, in some embodiments of the present application, the base can be a half-coverage mask, which can be conveniently fixed on the patient's face, and because the mask fits the patient's face and can correspond to the patient's facial features for corresponding hole design, it will not give the patient too much discomfort; and the side in contact with the face can also be provided with a soft pad, which can enhance the fixing effect and also improve the comfort of wearing.

[0061] Referring to Figure 9 In some embodiments of the present application, for patients who need to use artificial airway due to illness, the artificial airway inserted into the respiratory tract can be used as a component of the support assembly 210. At this time, the guide tube 211 provided on the support assembly 210 is connected with the artificial airway, and the human body carries the weight of the sputum suction tube driving mechanism 200 through the artificial airway, and in this way the sputum suction tube driving mechanism 200 and the human body become a whole. Because the sputum suction tube 100 is clamped in the sputum suction tube driving mechanism 200, when the body position of the human body changes, the sputum suction tube 100 can be effectively prevented from moving in the respiratory tract or falling out of the respiratory tract.

[0062] Referring to Figure 10 In some embodiments of the present application, when the guide tube 211 is connected with the artificial airway, a support assembly 210 can also be provided on the neck of the human body to carry the weight of the sputum suction tube driving mechanism 200.

[0063] In addition, in some embodiments of the present application, the base can also be a full-coverage mask, a ring-shaped or semi-ring-shaped neck ring, an ear-based support, etc.

[0064] Further, the support assembly 210 can also be provided with an auxiliary fixing support, which is provided on the ground, a hospital bed, a wall or a ceiling, and is used to support the weight of the entire sputum suction tube driving mechanism 200, reducing or even avoiding the pressure on the patient due to the configuration of the sputum suction tube driving mechanism 200.

[0065] Further, the support assembly 210 is provided with a connecting portion, and the mounting bracket 220 is movably connected to the connecting portion. Figure 3 、 Figure 4 As shown, in some embodiments of the present application, the support assembly 210 is provided with a guide tube 211 for guiding the sputum suction tube 100 into the respiratory tract of the patient, and the connecting portion is provided at the end of the guide tube 211. The mounting bracket 220 is rotatably connected to the end of the guide tube 211.

[0066] The guide tube 211 and the support assembly 210 can be integrally formed, or the guide tube 211 can be detachably assembled to the support assembly 210 as an independent accessory.

[0067] It is conceived that the guide tube 211 can be directly connected to the inlet of the artificial airway, and the artificial airway can bear part or all of the weight of the automatic sputum suction device, and the automatic sputum suction device is installed on the human body through the artificial airway, at this time, the artificial airway can be regarded as a part of the support assembly 210.

[0068] The guide tube 211 is matched with the diameter of the sputum suction tube 100, and the sputum suction tube 100 enters the respiratory tract of the patient from the nostril or oral cavity of the patient or the artificial airway after passing through the guide tube 211. The guide tube 211 can guide the sputum suction tube 100 to enter the respiratory tract of the patient more smoothly, and the mounting bracket 220 can be rotatably connected to the end of the guide tube 211, and the mounting bracket 220 is installed by using the guide tube 211, so that the mounting bracket 220 can more easily realize the reciprocating rotation around the axis of the mounting bracket 220.

[0069] Further, as shown in Figure 9 , in some embodiments of the present application, the side wall of the guide tube 211 can also be provided with a hollow hole. This structure is mainly to reduce the ventilation resistance of the patient, especially when the guide tube is connected with the artificial airway. When the patient needs to establish an artificial airway, the guide tube 211 is connected to the artificial airway, and the gas can enter and exit the artificial airway through the hollow hole of the guide tube 211, which can obviously reduce the respiratory resistance. In addition, the guide tube 211 can also be connected to the artificial airway through an intermediate connecting tube, at this time, at least one of the intermediate connecting tube and the artificial airway is provided with a hollow hole.

[0070] Further, as shown in Figure 5 and Figure 6 , in some embodiments of the present application, the mounting bracket 220 is provided with a sleeve 222, the mounting bracket 220 is sleeved on the guide tube 211 through the sleeve 222, and a clamping structure is arranged between the mounting bracket 220 and the guide tube 211. The clamping structure includes an annular clamping groove 2111 and a clamping block 2221 matched with the clamping groove 2111, the clamping groove 2111 is arranged on one of the mounting bracket 220 and the guide tube 211, and the clamping block 2221 is arranged on the other one of the mounting bracket 220 and the guide tube 211. In this embodiment, the clamping groove 2111 is arranged on the guide tube 211, and the clamping block 2221 is arranged on the sleeve 222. The mounting bracket 220 and the guide tube 211 are connected through the above-mentioned clamping structure, and cannot be separated from each other, and at the same time will not hinder the rotary motion of the mounting bracket 220, and the two can be arranged in a detachable form.

[0071] Further, a notch is arranged on one side of the clamping groove 2111 of the guide tube 211, and the notch can make one side of the clamping block 2221 of the guide tube 211 deform more easily, so that the mounting and dismounting between the clamping groove 2111 and the clamping block 2221 is more convenient.

[0072] AsFigure 1 , Figure 3 and Figure 4 As shown, the axial drive unit 230 is mounted on the mounting bracket 220. The axial drive unit 230 includes at least one transmission wheel 234 and a first drive motor 231 that drives the transmission wheel 234 to rotate. The transmission wheel 234 clamps the suction tube 100 passing through the mounting bracket 220. When the transmission wheel 234 rotates, it drives the suction tube 100 to move along the axial direction of the suction tube 100, thereby enabling the suction tube 100 to complete the withdrawal and insertion movements.

[0073] like Figure 3 and Figure 4 As shown in some embodiments of this application, the axial drive unit 230 is provided with two transmission wheels 234. The two transmission wheels 234 cooperate to clamp the suction tube 100. The axis of the clamped part of the suction tube 100 coincides with the rotation axis of the mounting bracket 220. When the mounting bracket 220 rotates and drives the suction tube to rotate, the suction tube clamped by the two transmission wheels does not swing. By using the cooperation of the two transmission wheels 234, the suction tube 100 can be clamped better, thereby driving the suction tube 100 to move.

[0074] Furthermore, the axial drive unit 230 also includes a transmission worm 232 and two transmission gears 233. The transmission worm 232 is mounted on the output shaft of the first drive unit 231, located between the two transmission gears 233, and simultaneously drives both transmission gears 233 to rotate. Each transmission gear 233 is connected to a corresponding transmission wheel 234, and the transmission gear 233 and the corresponding transmission wheel 234 are coaxially arranged. The first drive unit 231 can drive the two transmission gears 233 to rotate in opposite directions using only one transmission worm 232, thus driving the suction tube 100 to move axially, achieving a highly simplified transmission structure.

[0075] In addition, in other embodiments of this application, the axial drive unit 230 may also be provided with two first drive motors 231, each of which independently drives the corresponding transmission wheel 234.

[0076] Of course, a number of first drive motors, transmission worm gears, transmission gears, and transmission wheels can be set as needed. It is conceivable that the axial drive unit can use other transmission structures to achieve power transmission between the first drive motor and the transmission wheels.

[0077] Furthermore, in other embodiments of this application, the axial drive unit 230 may have only one transmission wheel, or it may have two or more transmission wheels. For example... Figure 11As shown in the drawings, in the present embodiment, only one conveying wheel 234 is arranged on the axial driving unit 230, and the conveying wheel 234 is clamped with the inner wall of the mounting bracket 220 to clamp the sputum suction tube 100. When the conveying wheel 234 rotates, the sputum suction tube 100 is driven to move along the axial direction of the sputum suction tube 100.

[0078] It is easily conceivable that, in the plurality of embodiments provided in the present application, an arc-shaped groove is preferably arranged on the circumferential surface of the conveying wheel 234 in contact with the sputum suction tube 100, so as to better clamp the sputum suction tube 100 by the conveying wheel.

[0079] It is easily conceivable that the conveying wheel can be made of soft material, or an outer layer wheel made of elastic material such as rubber or silica gel can be arranged on the circumferential surface of the conveying wheel 234, so as to increase the friction between the conveying wheel 234 and the sputum suction tube 100, thereby enabling the conveying wheel 234 to better drive the sputum suction tube 100.

[0080] The rotating driving unit 240 is mounted on one of the support assembly 210 and the mounting bracket 220. The rotating driving unit 240 comprises a second driving machine 241, which drives the mounting bracket 220 to rotate around the axial direction of the mounting bracket 220. The sputum suction tube 100 is clamped by the axial driving unit 230 and rotates with the mounting bracket 220.

[0081] As shown in the drawings, Figure 1 , Figure 4 and Figure 5 in some embodiments of the present application, the rotating driving unit 240 is mounted on the mounting bracket 220. Specifically, the second driving machine 241 is mounted on the mounting bracket 220, and a first rotating gear 242 is arranged on the output shaft of the second driving machine 241. A second rotating ring gear 243 is arranged on the connecting portion at the end of the guide tube 211 and cooperates with the first rotating gear 242. Since the guide tube 211 is fixedly arranged on the support assembly 210, and the mounting bracket 220 is rotatably connected to the end of the guide tube 211, when the second driving machine 241 drives the first rotating gear 242 to rotate, the first rotating gear 242 rotates around the second rotating ring gear 243, thereby driving the mounting bracket 220 to rotate.

[0082] Further, it is easily conceivable that in other embodiments of the present application, the rotating driving unit 240 can also be mounted on the support assembly 210, and a third rotating gear is arranged on the output shaft of the second driving machine, and a fourth rotating ring gear is arranged on the mounting bracket to cooperate with the third rotating gear. When the second driving machine is in operation, the third rotating gear rotates around the fourth rotating ring gear, and the mounting bracket 220 is also driven to rotate. It is conceivable that the rotating driving unit is provided with at least one set of second driving machine and the rotating gear matched therewith, and when two sets of second driving machine and the rotating gear matched therewith are provided, the two sets of structures are symmetrically arranged with the rotating axis of the mounting bracket as the center line, so that the force is symmetrical and the resistance to rotation is small.

[0083] It is conceivable that in other embodiments, two sets of rotating driving units 240 can also be provided, which are symmetrically arranged to drive the mounting bracket 220 to rotate around the axial direction of the mounting bracket 220. The symmetric arrangement of the rotating driving units 240 can make the rotating force symmetrical and reduce the resistance to rotation. Of course, a plurality of sets of rotating driving units 240 can also be provided as needed.

[0084] It is conceivable that the rotating driving unit can use other transmission structures to drive the mounting bracket to rotate around the axial direction of the mounting bracket.

[0085] It is easily conceivable that in some embodiments of the present application, the first driving machine 231 and the second driving machine 241 can be electric motors, pneumatic motors or hydraulic drive motors, etc. The first driving machine 231 and the second driving machine 241 can also be configured with a speed reduction device to appropriately reduce the rotation speed of the output shaft to adapt to the motion driving. Further, the first driving machine 231 and the second driving machine 241 use a micro motor with a speed reduction device, preferably a micro speed reduction hollow cup motor. Such motor has small volume and slow output shaft rotation speed, which can miniaturize the sputum suction tube driving mechanism, reduce the overall weight, facilitate wearing on the human body, and improve comfort. After using the speed reduction device, the sputum suction tube can be driven to rotate and move at a moderate speed, and the sputum suction tube driven by the sputum suction tube driving device can move close to the artificial sputum suction operation.

[0086] It is easily conceivable that in some embodiments of the present application, the first driving machine 231 and the second driving machine 241 are connected to an external power supply control device through a power supply line. In order to reduce the winding of the power supply line caused by the rotation of the mounting bracket 220, the first driving machine 231 and the second driving machine 241 are preferably provided with a current collecting ring, and the power supply line and signal line are connected to the first driving machine 231 and the second driving machine 241 through the current collecting ring to provide power supply and complete signal transmission, which can reduce the winding problem of the power supply line caused by rotation.

[0087] Further, in some embodiments of the present application, the mounting bracket 220 is preferably assembled by two parts, the inner bracket 223 and the outer bracket 224, and the inner bracket 223 and the outer bracket 224 are connected together by buckling or screwing, and the inner bracket 223 and the outer bracket 224 can be separated. The sputum suction tube 100 passes through the inner bracket 223, and the inner bracket 223 is used to isolate the sputum suction tube 100 and limit the components in contact with the sputum suction tube 100 on the inner bracket 223 and the conveying wheel 234. The outer bracket 224 can be used to mount the first driving machine 231, the second driving machine 241 and other driving components, and the outer bracket 224 is not in contact with the sputum suction tube 100 through the isolation of the inner bracket 223.

[0088] Further, in some embodiments of the present application, the conveying wheel 234 can be mounted on any one of the inner bracket 223 or the outer bracket 224. When the conveying wheel 234 is mounted on the outer bracket 224, the conveying wheel 234 is mounted in a convenient dismounting manner. When the conveying wheel 234 is contaminated, the conveying wheel 234 can be removed from the outer bracket 224. After the conveying wheel 234 is removed from the outer bracket 224, the outer bracket 224 can be conveniently dismounted from the inner bracket 223, and the outer bracket 224 is separated from the inner bracket 223 and the conveying wheel 234 for cleaning and disinfection. Since the outer bracket 224 is not in contact with the sputum suction tube 100, as long as the sterile inner bracket 223 and the conveying wheel 234 are replaced, the outer bracket 224 that has not been cleaned and disinfected can be directly used. When the conveying wheel is mounted on the inner bracket, the conveying wheel can be mounted on the inner bracket in a detachable and mountable manner through a detachable structure, or the conveying wheel can be mounted on the inner bracket in a non-detachable manner.

[0089] It is easy to think that, in general, most medical devices will have direct contact with patients during use, in order to avoid cross infection, many medical devices in contact with patients are disposable, increasing the cost; some medical devices are reused after high temperature and high pressure steam sterilization, but the medical devices with electric components cannot be sterilized by high temperature and high pressure steam. In the embodiments of the present application, because the sputum suction tube 100 is repeatedly inserted and extracted during sputum suction, the respiratory tract secretions adhere to part of the tube wall of the sputum suction tube 100, which is a disposable component. The sputum suction tube driving mechanism 200 is used to drive the sputum suction tube 100, and part of the sputum suction tube driving mechanism 200 will contact the sputum suction tube 100. In view of the problem of high cost of the sputum suction tube driving mechanism 200, the mounting bracket 220 is set as a detachable inner bracket 223 and an outer bracket 224 in the present application, so as to reduce the cost and facilitate cleaning and disinfection of the two by different methods. The sputum suction tube 100 adhering to the patient's secretions will repeatedly enter and exit the inner bracket 223, therefore, the inner bracket 223 and the components mounted thereon can be used as disposable components; the outer bracket 224 and the driving components mounted thereon are electrical components and do not contact the sputum suction tube 100, the outer bracket 224 remains clean, after replacing the sterile inner bracket 223, the outer bracket 224 which has not been cleaned and disinfected can be used directly, without the need to wait for the outer bracket 224 to be disinfected before use again, which is convenient and flexible in use, improves the use efficiency of the outer bracket 224, and reduces the cost of the medical institutions without the need to purchase too many outer bracket 224 accessories. In addition, since no electric components are arranged on the inner bracket 223, the inner bracket 223 can also be repeatedly used after being cleaned by immersion and sterilized by high temperature and high pressure steam, further reducing the cost.

[0090] Further, with reference to Figure 3 to Figure 5 In some embodiments of the present application, a guide ring 221 is further arranged on the mounting bracket 220, the guide ring 221 is arranged at the front end of the mounting bracket 220, and the guide ring 221 guides the sputum suction tube 100 to enter the mounting bracket 220. The arrangement of the guide ring 221 facilitates the medical staff to put the sputum suction tube 100 into the mounting bracket 220, and can also have the auxiliary limiting effect on the sputum suction tube 100.

[0091] Further, with reference to Figure 3 to Figure 5 In some embodiments of the present application, an auxiliary ring 250 is arranged in front of the mounting bracket 220, the auxiliary ring 250 is sleeved on the sputum suction tube 100, and the auxiliary ring 250 is connected to the mounting bracket 220 through a flexible belt 251. The arrangement of the auxiliary ring 250 and the flexible belt 251 limits the maximum movement distance of the sputum suction tube 100 when it is passively pulled, so that the sputum suction tube 100 has the effect of preventing accidental falling out of the respiratory tract or artificial airway.

[0092] Further, with reference to Figure 7 and Figure 8In some embodiments of the present application, the sputum suction tube driving mechanism 200 further comprises a cover 260 connected with any one of the support assembly 210 or the mounting bracket 220, the cover 260 covers the mounting bracket 220, and the cover 260 can also cover part of the support assembly 210, so as to avoid the problem of entanglement or clamping of external objects with the components and wires on the mounting bracket 220 and the support assembly 210. In addition, the cover 260 can also have the effects of protecting the covered components, dustproof and aesthetic.

[0093] In the present embodiment, preferably, the cover 260 is assembled by an upper cover 261 and a lower cover 262, which can be conveniently mounted and dismounted.

[0094] In addition, in some embodiments of the present application, the sputum suction tube driving mechanism 200 can further comprise a sensing module arranged on at least one of the support assembly 210, the mounting bracket 220, the axial driving unit 230 and the rotary driving unit 240, the sensing module is used for monitoring the movement of the sputum suction tube and the operation of the automatic sputum suction device, so that the operator can know the operation of the automatic sputum suction device in real time, so as to monitor and intervene in the control of the automatic sputum suction operation at any time.

[0095] Further, in some embodiments of the present application, the automatic sputum suction device further comprises an automatic sputum suction device controller, which controls the change of the pressure in the suction device and the operation of the sputum suction tube driving mechanism, and the automatic sputum suction device controller receives the signals obtained by the sensing module. When the sputum suction operation is completed, the automatic sputum suction device controller closes the communication between the sputum suction tube and the suction device, and stops the operation of the sputum suction tube driving mechanism.

[0096] The automatic sputum suction device of the present application can drive the sputum suction tube 100 to perform the movement of extraction, insertion and rotation by the sputum suction tube driving mechanism 200, so as to realize the automatic insertion of the sputum suction tube 100 into the respiratory tract of the patient or the automatic extraction of the sputum suction tube 100 from the respiratory tract of the patient. In addition, in the process of sputum suction by the sputum suction tube 100, the sputum suction tube 100 is automatically subjected to reciprocating rotary motion by the sputum suction tube driving mechanism 200, which can replace part of the operation of medical staff, help to realize the automatic sputum suction of the patient, improve the sputum suction frequency, effectively avoid the accumulation of a large amount of sputum in the patient's body, and improve the treatment effect of the pneumonia. In addition, the automatic sputum suction device of the present application can cooperate with the stimulator on the sputum suction tube 100 to induce the patient to cough, so as to promote the sputum in the deep part of the respiratory tract of the patient to be discharged to the shallow part and then be sucked out, thereby improving the efficiency of sputum suction.

[0097] It should be understood that the various embodiments provided by the present application can be combined arbitrarily to achieve different technical effects.

[0098] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. An automatic sputum suction device, characterized by, The sputum suction tube is provided with a stimulator on the outer tube wall, the stimulator has a stimulating part which protrudes outward relative to the outer tube wall of the sputum suction tube and can stimulate the inner wall of the respiratory tract; a flushing tube is arranged in the sputum suction tube, and a anti-overflow tube is arranged at the end of the sputum suction tube, the anti-overflow tube is provided with an anti-overflow cavity, and the tube cavity of the sputum suction tube and the tube cavity of the flushing tube are communicated with the anti-overflow cavity respectively; In the process of sputum suction, the sputum in the respiratory tract is sucked into the anti-overflow cavity and the tube cavity of the sputum suction tube by negative pressure, and the flushing liquid is limited in the anti-overflow cavity and the tube cavity of the sputum suction tube; The sputum suction tube driving mechanism is used for driving the sputum suction tube to move axially and rotate; The stimulator comprises a first stimulator and a second stimulator, the first stimulator is arranged on the outer tube wall within the range of 0-5 cm from the end of the sputum suction tube, and the second stimulator is arranged on the outer tube wall within the range of 8-20 cm from the end of the sputum suction tube; when the sputum suction tube cannot be inserted into the lower respiratory tract and is retained in the throat, the first stimulator can stimulate the shallow part of the respiratory tract and the throat; when the sputum suction tube is inserted into the lower respiratory tract through the glottis, the second stimulator can stimulate the shallow part of the respiratory tract and the throat. The stimulating part is at least one of a hair-like object, a protruding point, a flaky protruding block, a cylindrical protruding block and a conical protruding block.

2. The automatic sputum suction device according to claim 1, characterized in that, The side wall of the sputum suction tube is provided with a side hole.

3. The automatic sputum suction device according to claim 1, characterized in that, The sputum suction tube driving mechanism comprises:

4. The automatic sputum suction device according to claim 1, characterized in that, A support assembly is provided with a connecting part; An installation support is movably connected to the connecting part, the sputum suction tube passes through the installation support, the installation support comprises an inner support and an outer support, the sputum suction tube passes through the inner support, the inner support is used for isolating the sputum suction tube, and the outer support is connected to the inner support through a detachable structure; An axial driving unit is installed on the installation support, the axial driving unit comprises at least one transmission wheel and a first driving machine which drives the transmission wheel to rotate, the transmission wheel clamps the sputum suction tube, and the transmission wheel drives the sputum suction tube to move along the axial direction of the sputum suction tube when rotating; A rotary driving unit is installed on one of the support assembly and the installation support, the rotary driving unit comprises a second driving machine, and the second driving machine drives the installation support to rotate around the axial direction of the installation support; The outer support is used for mounting all or part of the structures of the axial driving unit and the rotary driving unit, the outer support does not contact the sputum suction tube, the first driving machine is installed on the outer support, the second driving machine is installed on the outer support when the rotary driving unit is installed on the installation support, and the transmission wheel is installed on the outer support through a detachable structure or is installed on the inner support. ​ 5. The automatic sputum suction device according to claim 4, characterized in that, The support assembly is provided with a guide tube for guiding the sputum suction tube into the respiratory tract of the patient or the artificial airway, and the connecting part is arranged at the end of the guide tube, and the mounting bracket is rotatably connected to the end of the guide tube.

6. The automatic sputum suction device according to claim 4, characterized in that, The support assembly comprises at least one of a base and a fixed bracket, the base is mounted on the patient, and the fixed bracket is fixed on the bed, the ground, the wall or the ceiling.

7. The automatic sputum suction device according to claim 5, characterized in that, The mounting bracket and the guide tube are connected through a clamping structure, the clamping structure comprises a ring-shaped clamping groove and a clamping block matched with the clamping groove, the clamping groove is arranged on one of the mounting bracket and the guide tube, and the clamping block is arranged on the other one of the mounting bracket and the guide tube.

8. The automatic sputum suction device according to claim 7, characterized in that, The second driving machine is mounted on the support assembly, a first rotating gear is arranged on the output shaft of the second driving machine, and a second rotating ring gear matched with the first rotating gear is arranged on the mounting bracket.

9. The automatic sputum suction device according to claim 7, characterized in that, The second driving machine is mounted on the outer bracket of the mounting bracket, a third rotating gear is arranged on the output shaft of the second driving machine, and a fourth rotating ring gear matched with the third rotating gear is arranged on the support assembly.

10. The automatic sputum suction device according to claim 4, characterized in that, The axial driving unit is provided with two conveying wheels, and the two conveying wheels clamp the sputum suction tube.

11. The automatic sputum suction device according to claim 10, characterized in that, The axial driving unit further comprises: Two transmission gears, each of the transmission gears is connected to one of the conveying wheels, and the transmission gear and the corresponding conveying wheel are coaxially arranged; A transmission worm is arranged on the output shaft of the first driving machine, the transmission worm is located between the two transmission gears, and the transmission worm drives the two transmission gears to rotate at the same time.

12. The automatic sputum suction device according to claim 4 or 10, characterized in that, The conveying wheel is made of soft material, or an outer layer of the conveying wheel is made of soft material. The soft material is rubber or silicone.

13. The automatic sputum suction device according to claim 4, characterized in that, A sensing module is further included, the sensing module is arranged on at least one of the support assembly, the mounting bracket, the axial driving unit and the rotating driving unit, and the sensing module is used for monitoring the movement of the sputum suction tube and the operation of the automatic sputum suction device.

14. The automatic sputum suction device according to claim 4, characterized in that, The mounting bracket comprises: An auxiliary ring is sleeved on the sputum suction tube, and the auxiliary ring is connected to the mounting bracket through a flexible belt.

15. The automatic sputum suction device according to claim 4, characterized in that, The sputum suction tube driving mechanism further comprises an outer cover, the outer cover is connected to any one of the support assembly and the mounting bracket, and the outer cover covers the mounting bracket.

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